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Rewrite markdown rendering to blackfriday v2 and rewrite orgmode rendering to go-org (#8560)

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* Rewrite markdown rendering to blackfriday v2.0

* Fix style

* Fix go mod with golang 1.13

* Fix blackfriday v2 import

* Inital orgmode renderer migration to go-org

* Vendor go-org dependency

* Ignore errors :/

* Update go-org to latest version

* Update test

* Fix go-org test

* Remove unneeded code

* Fix comments

* Fix markdown test

* Fix blackfriday regression rendering HTML block
This commit is contained in:
Lauris BH 2019-10-31 03:06:25 +02:00 committed by zeripath
parent 690a8ec502
commit 086a46994a
55 changed files with 5769 additions and 3732 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
go.mod
View file

@ -22,7 +22,6 @@ require (
github.com/blevesearch/go-porterstemmer v0.0.0-20141230013033-23a2c8e5cf1f // indirect
github.com/blevesearch/segment v0.0.0-20160105220820-db70c57796cc // indirect
github.com/boombuler/barcode v0.0.0-20161226211916-fe0f26ff6d26 // indirect
github.com/chaseadamsio/goorgeous v0.0.0-20170901132237-098da33fde5f
github.com/couchbase/vellum v0.0.0-20190111184608-e91b68ff3efe // indirect
github.com/cznic/b v0.0.0-20181122101859-a26611c4d92d // indirect
github.com/cznic/mathutil v0.0.0-20181122101859-297441e03548 // indirect
@ -73,6 +72,7 @@ require (
github.com/mschoch/smat v0.0.0-20160514031455-90eadee771ae // indirect
github.com/msteinert/pam v0.0.0-20151204160544-02ccfbfaf0cc
github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5
github.com/niklasfasching/go-org v0.1.7
github.com/oliamb/cutter v0.2.2
github.com/philhofer/fwd v1.0.0 // indirect
github.com/pkg/errors v0.8.1
@ -80,12 +80,13 @@ require (
github.com/prometheus/client_golang v1.1.0
github.com/prometheus/procfs v0.0.4 // indirect
github.com/remyoudompheng/bigfft v0.0.0-20190321074620-2f0d2b0e0001 // indirect
github.com/russross/blackfriday v0.0.0-20180428102519-11635eb403ff
github.com/russross/blackfriday v2.0.0+incompatible // indirect
github.com/russross/blackfriday/v2 v2.0.1
github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca // indirect
github.com/satori/go.uuid v1.2.0
github.com/sergi/go-diff v1.0.0
github.com/shurcooL/httpfs v0.0.0-20190527155220-6a4d4a70508b // indirect
github.com/shurcooL/sanitized_anchor_name v0.0.0-20160918041101-1dba4b3954bc // indirect
github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
github.com/shurcooL/vfsgen v0.0.0-20181202132449-6a9ea43bcacd
github.com/steveyen/gtreap v0.0.0-20150807155958-0abe01ef9be2 // indirect
github.com/stretchr/testify v1.4.0
@ -100,7 +101,7 @@ require (
github.com/willf/bitset v0.0.0-20180426185212-8ce1146b8621 // indirect
github.com/yohcop/openid-go v0.0.0-20160914080427-2c050d2dae53
golang.org/x/crypto v0.0.0-20190927123631-a832865fa7ad
golang.org/x/net v0.0.0-20190909003024-a7b16738d86b
golang.org/x/net v0.0.0-20191028085509-fe3aa8a45271
golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
golang.org/x/sys v0.0.0-20190910064555-bbd175535a8b
golang.org/x/text v0.3.2

16
go.sum
View file

@ -86,8 +86,6 @@ github.com/boombuler/barcode v0.0.0-20161226211916-fe0f26ff6d26/go.mod h1:paBWMc
github.com/bradfitz/gomemcache v0.0.0-20190329173943-551aad21a668 h1:U/lr3Dgy4WK+hNk4tyD+nuGjpVLPEHuJSFXMw11/HPA=
github.com/bradfitz/gomemcache v0.0.0-20190329173943-551aad21a668/go.mod h1:H0wQNHz2YrLsuXOZozoeDmnHXkNCRmMW0gwFWDfEZDA=
github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
github.com/chaseadamsio/goorgeous v0.0.0-20170901132237-098da33fde5f h1:REH9VH5ubNR0skLaOxK7TRJeRbE2dDfvaouQo8FsRcA=
github.com/chaseadamsio/goorgeous v0.0.0-20170901132237-098da33fde5f/go.mod h1:6QaC0vFoKWYDth94dHFNgRT2YkT5FHdQp/Yx15aAAi0=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/corbym/gocrest v1.0.3 h1:gwEdq6RkTmq+09CTuM29DfKOCtZ7G7bcyxs3IZ6EVdU=
github.com/corbym/gocrest v1.0.3/go.mod h1:maVFL5lbdS2PgfOQgGRWDYTeunSWQeiEgoNdTABShCs=
@ -425,6 +423,10 @@ github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRW
github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5 h1:BvoENQQU+fZ9uukda/RzCAL/191HHwJA5b13R6diVlY=
github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
github.com/niklasfasching/go-org v0.1.6 h1:F521WcqRNl8OJumlgAnekZgERaTA2HpfOYYfVEKOeI8=
github.com/niklasfasching/go-org v0.1.6/go.mod h1:AsLD6X7djzRIz4/RFZu8vwRL0VGjUvGZCCH1Nz0VdrU=
github.com/niklasfasching/go-org v0.1.7 h1:t3V+3XnS/7BhKv/7SlMUa8FvAiq577/a1T3D7mLIRXE=
github.com/niklasfasching/go-org v0.1.7/go.mod h1:AsLD6X7djzRIz4/RFZu8vwRL0VGjUvGZCCH1Nz0VdrU=
github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
github.com/oliamb/cutter v0.2.2 h1:Lfwkya0HHNU1YLnGv2hTkzHfasrSMkgv4Dn+5rmlk3k=
github.com/oliamb/cutter v0.2.2/go.mod h1:4BenG2/4GuRBDbVm/OPahDVqbrOemzpPiG5mi1iryBU=
@ -487,8 +489,10 @@ github.com/remyoudompheng/bigfft v0.0.0-20190321074620-2f0d2b0e0001/go.mod h1:qq
github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
github.com/russross/blackfriday v0.0.0-20180428102519-11635eb403ff h1:g9ZlAHmkc/h5So+OjNCkZWh+FjuKEOOOoyRkqlGA8+c=
github.com/russross/blackfriday v0.0.0-20180428102519-11635eb403ff/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
github.com/russross/blackfriday v2.0.0+incompatible h1:cBXrhZNUf9C+La9/YpS+UHpUT8YD6Td9ZMSU9APFcsk=
github.com/russross/blackfriday v2.0.0+incompatible/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca h1:NugYot0LIVPxTvN8n+Kvkn6TrbMyxQiuvKdEwFdR9vI=
github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca/go.mod h1:uugorj2VCxiV1x+LzaIdVa9b4S4qGAcH6cbhh4qVxOU=
github.com/satori/go.uuid v1.2.0 h1:0uYX9dsZ2yD7q2RtLRtPSdGDWzjeM3TbMJP9utgA0ww=
@ -499,6 +503,8 @@ github.com/shurcooL/httpfs v0.0.0-20190527155220-6a4d4a70508b h1:4kg1wyftSKxLtnP
github.com/shurcooL/httpfs v0.0.0-20190527155220-6a4d4a70508b/go.mod h1:ZY1cvUeJuFPAdZ/B6v7RHavJWZn2YPVFQ1OSXhCGOkg=
github.com/shurcooL/sanitized_anchor_name v0.0.0-20160918041101-1dba4b3954bc h1:3wIrJvFb3Pf6B/2mDBnN1G5IfUVev4X5apadQlWOczE=
github.com/shurcooL/sanitized_anchor_name v0.0.0-20160918041101-1dba4b3954bc/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
github.com/shurcooL/vfsgen v0.0.0-20181202132449-6a9ea43bcacd h1:ug7PpSOB5RBPK1Kg6qskGBoP3Vnj/aNYFTznWvlkGo0=
github.com/shurcooL/vfsgen v0.0.0-20181202132449-6a9ea43bcacd/go.mod h1:TrYk7fJVaAttu97ZZKrO9UbRa8izdowaMIZcxYMbVaw=
github.com/siddontang/go v0.0.0-20180604090527-bdc77568d726/go.mod h1:3yhqj7WBBfRhbBlzyOC3gUxftwsU0u8gqevxwIHQpMw=
@ -650,6 +656,8 @@ golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297 h1:k7pJ2yAPLPgbskkFdhRCsA77k
golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20190909003024-a7b16738d86b h1:XfVGCX+0T4WOStkaOsJRllbsiImhB2jgVBGc9L0lPGc=
golang.org/x/net v0.0.0-20190909003024-a7b16738d86b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20191028085509-fe3aa8a45271 h1:N66aaryRB3Ax92gH0v3hp1QYZ3zWWCCUR/j8Ifh45Ss=
golang.org/x/net v0.0.0-20191028085509-fe3aa8a45271/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/oauth2 v0.0.0-20180620175406-ef147856a6dd/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421 h1:Wo7BWFiOk0QRFMLYMqJGFMd9CgUAcGx7V+qEg/h5IBI=

4
modules/markup/html_test.go
View file

@ -323,6 +323,6 @@ func TestRender_ShortLinks(t *testing.T) {
`<p><a href="`+notencodedImgurlWiki+`" rel="nofollow"><img src="`+notencodedImgurlWiki+`"/></a></p>`)
test(
"<p><a href=\"https://example.org\">[[foobar]]</a></p>",
`<p><a href="https://example.org" rel="nofollow">[[foobar]]</a></p>`,
`<p><a href="https://example.org" rel="nofollow">[[foobar]]</a></p>`)
`<p></p><p><a href="https://example.org" rel="nofollow">[[foobar]]</a></p><p></p>`,
`<p></p><p><a href="https://example.org" rel="nofollow">[[foobar]]</a></p><p></p>`)
}

217
modules/markup/markdown/markdown.go
View file

@ -7,13 +7,14 @@ package markdown
import (
"bytes"
"io"
"strings"
"code.gitea.io/gitea/modules/markup"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/util"
"github.com/russross/blackfriday"
"github.com/russross/blackfriday/v2"
)
// Renderer is a extended version of underlying render object.
@ -25,134 +26,138 @@ type Renderer struct {
var byteMailto = []byte("mailto:")
// Link defines how formal links should be processed to produce corresponding HTML elements.
func (r *Renderer) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
// special case: this is not a link, a hash link or a mailto:, so it's a
// relative URL
if len(link) > 0 && !markup.IsLink(link) &&
link[0] != '#' && !bytes.HasPrefix(link, byteMailto) {
lnk := string(link)
var htmlEscaper = [256][]byte{
'&': []byte("&amp;"),
'<': []byte("&lt;"),
'>': []byte("&gt;"),
'"': []byte("&quot;"),
}
func escapeHTML(w io.Writer, s []byte) {
var start, end int
for end < len(s) {
escSeq := htmlEscaper[s[end]]
if escSeq != nil {
_, _ = w.Write(s[start:end])
_, _ = w.Write(escSeq)
start = end + 1
}
end++
}
if start < len(s) && end <= len(s) {
_, _ = w.Write(s[start:end])
}
}
// RenderNode is a default renderer of a single node of a syntax tree. For
// block nodes it will be called twice: first time with entering=true, second
// time with entering=false, so that it could know when it's working on an open
// tag and when on close. It writes the result to w.
//
// The return value is a way to tell the calling walker to adjust its walk
// pattern: e.g. it can terminate the traversal by returning Terminate. Or it
// can ask the walker to skip a subtree of this node by returning SkipChildren.
// The typical behavior is to return GoToNext, which asks for the usual
// traversal to the next node.
func (r *Renderer) RenderNode(w io.Writer, node *blackfriday.Node, entering bool) blackfriday.WalkStatus {
switch node.Type {
case blackfriday.Image:
prefix := r.URLPrefix
if r.IsWiki {
lnk = util.URLJoin("wiki", lnk)
prefix = util.URLJoin(prefix, "wiki", "raw")
}
mLink := util.URLJoin(r.URLPrefix, lnk)
link = []byte(mLink)
}
if len(content) > 10 && string(content[0:9]) == "<a href=\"" && bytes.Contains(content[9:], []byte("<img")) {
// Image with link case: markdown `[![]()]()`
// If the content is an image, then we change the original href around it
// which points to itself to a new address "link"
rightQuote := bytes.Index(content[9:], []byte("\""))
content = bytes.Replace(content, content[9:9+rightQuote], link, 1)
out.Write(content)
} else {
r.Renderer.Link(out, link, title, content)
}
}
// List renders markdown bullet or digit lists to HTML
func (r *Renderer) List(out *bytes.Buffer, text func() bool, flags int) {
marker := out.Len()
if out.Len() > 0 {
out.WriteByte('\n')
}
if flags&blackfriday.LIST_TYPE_DEFINITION != 0 {
out.WriteString("<dl>")
} else if flags&blackfriday.LIST_TYPE_ORDERED != 0 {
out.WriteString("<ol class='ui list'>")
} else {
out.WriteString("<ul class='ui list'>")
}
if !text() {
out.Truncate(marker)
return
}
if flags&blackfriday.LIST_TYPE_DEFINITION != 0 {
out.WriteString("</dl>\n")
} else if flags&blackfriday.LIST_TYPE_ORDERED != 0 {
out.WriteString("</ol>\n")
} else {
out.WriteString("</ul>\n")
}
}
// ListItem defines how list items should be processed to produce corresponding HTML elements.
func (r *Renderer) ListItem(out *bytes.Buffer, text []byte, flags int) {
// Detect procedures to draw checkboxes.
prefix := ""
if bytes.HasPrefix(text, []byte("<p>")) {
prefix = "<p>"
}
switch {
case bytes.HasPrefix(text, []byte(prefix+"[ ] ")):
text = append([]byte(`<span class="ui fitted disabled checkbox"><input type="checkbox" disabled="disabled" /><label /></span>`), text[3+len(prefix):]...)
if prefix != "" {
text = bytes.Replace(text, []byte(prefix), []byte{}, 1)
prefix = strings.Replace(prefix, "/src/", "/media/", 1)
link := node.LinkData.Destination
if len(link) > 0 && !markup.IsLink(link) {
lnk := string(link)
lnk = util.URLJoin(prefix, lnk)
lnk = strings.Replace(lnk, " ", "+", -1)
link = []byte(lnk)
}
case bytes.HasPrefix(text, []byte(prefix+"[x] ")):
text = append([]byte(`<span class="ui checked fitted disabled checkbox"><input type="checkbox" checked="" disabled="disabled" /><label /></span>`), text[3+len(prefix):]...)
if prefix != "" {
text = bytes.Replace(text, []byte(prefix), []byte{}, 1)
node.LinkData.Destination = link
// Render link around image only if parent is not link already
if node.Parent != nil && node.Parent.Type != blackfriday.Link {
if entering {
_, _ = w.Write([]byte(`<a href="`))
escapeHTML(w, link)
_, _ = w.Write([]byte(`">`))
return r.Renderer.RenderNode(w, node, entering)
}
s := r.Renderer.RenderNode(w, node, entering)
_, _ = w.Write([]byte(`</a>`))
return s
}
return r.Renderer.RenderNode(w, node, entering)
case blackfriday.Link:
// special case: this is not a link, a hash link or a mailto:, so it's a
// relative URL
link := node.LinkData.Destination
if len(link) > 0 && !markup.IsLink(link) &&
link[0] != '#' && !bytes.HasPrefix(link, byteMailto) &&
node.LinkData.Footnote == nil {
lnk := string(link)
if r.IsWiki {
lnk = util.URLJoin("wiki", lnk)
}
link = []byte(util.URLJoin(r.URLPrefix, lnk))
}
node.LinkData.Destination = link
return r.Renderer.RenderNode(w, node, entering)
case blackfriday.Text:
isListItem := false
for n := node.Parent; n != nil; n = n.Parent {
if n.Type == blackfriday.Item {
isListItem = true
break
}
}
if isListItem {
text := node.Literal
switch {
case bytes.HasPrefix(text, []byte("[ ] ")):
_, _ = w.Write([]byte(`<span class="ui fitted disabled checkbox"><input type="checkbox" disabled="disabled" /><label /></span>`))
text = text[3:]
case bytes.HasPrefix(text, []byte("[x] ")):
_, _ = w.Write([]byte(`<span class="ui checked fitted disabled checkbox"><input type="checkbox" checked="" disabled="disabled" /><label /></span>`))
text = text[3:]
}
node.Literal = text
}
}
r.Renderer.ListItem(out, text, flags)
}
// Image defines how images should be processed to produce corresponding HTML elements.
func (r *Renderer) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
prefix := r.URLPrefix
if r.IsWiki {
prefix = util.URLJoin(prefix, "wiki", "raw")
}
prefix = strings.Replace(prefix, "/src/", "/media/", 1)
if len(link) > 0 && !markup.IsLink(link) {
lnk := string(link)
lnk = util.URLJoin(prefix, lnk)
lnk = strings.Replace(lnk, " ", "+", -1)
link = []byte(lnk)
}
// Put a link around it pointing to itself by default
out.WriteString(`<a href="`)
out.Write(link)
out.WriteString(`">`)
r.Renderer.Image(out, link, title, alt)
out.WriteString("</a>")
return r.Renderer.RenderNode(w, node, entering)
}
const (
blackfridayExtensions = 0 |
blackfriday.EXTENSION_NO_INTRA_EMPHASIS |
blackfriday.EXTENSION_TABLES |
blackfriday.EXTENSION_FENCED_CODE |
blackfriday.EXTENSION_STRIKETHROUGH |
blackfriday.EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK |
blackfriday.EXTENSION_DEFINITION_LISTS |
blackfriday.EXTENSION_FOOTNOTES |
blackfriday.EXTENSION_HEADER_IDS |
blackfriday.EXTENSION_AUTO_HEADER_IDS
blackfriday.NoIntraEmphasis |
blackfriday.Tables |
blackfriday.FencedCode |
blackfriday.Strikethrough |
blackfriday.NoEmptyLineBeforeBlock |
blackfriday.DefinitionLists |
blackfriday.Footnotes |
blackfriday.HeadingIDs |
blackfriday.AutoHeadingIDs
blackfridayHTMLFlags = 0 |
blackfriday.HTML_SKIP_STYLE |
blackfriday.HTML_OMIT_CONTENTS |
blackfriday.HTML_USE_SMARTYPANTS
blackfriday.Smartypants
)
// RenderRaw renders Markdown to HTML without handling special links.
func RenderRaw(body []byte, urlPrefix string, wikiMarkdown bool) []byte {
renderer := &Renderer{
Renderer: blackfriday.HtmlRenderer(blackfridayHTMLFlags, "", ""),
Renderer: blackfriday.NewHTMLRenderer(blackfriday.HTMLRendererParameters{
Flags: blackfridayHTMLFlags,
}),
URLPrefix: urlPrefix,
IsWiki: wikiMarkdown,
}
exts := blackfridayExtensions
if setting.Markdown.EnableHardLineBreak {
exts |= blackfriday.EXTENSION_HARD_LINE_BREAK
exts |= blackfriday.HardLineBreak
}
body = blackfriday.Markdown(body, renderer, exts)
body = blackfriday.Run(body, blackfriday.WithRenderer(renderer), blackfriday.WithExtensions(exts))
return markup.SanitizeBytes(body)
}

8
modules/markup/markdown/markdown_test.go
View file

@ -166,13 +166,13 @@ func testAnswers(baseURLContent, baseURLImages string) []string {
<h3 id="footnotes">Footnotes</h3>
<p>Here is a simple footnote,<sup id="fnref:1"><a href="#fn:1" rel="nofollow">1</a></sup> and here is a longer one.<sup id="fnref:bignote"><a href="#fn:bignote" rel="nofollow">2</a></sup></p>
<div>
<hr/>
<ol>
<li id="fn:1">This is the first footnote.
</li>
<li id="fn:1">This is the first footnote.</li>
<li id="fn:bignote"><p>Here is one with multiple paragraphs and code.</p>
@ -180,9 +180,9 @@ func testAnswers(baseURLContent, baseURLImages string) []string {
<p><code>{ my code }</code></p>
<p>Add as many paragraphs as you like.</p>
</li>
<p>Add as many paragraphs as you like.</p></li>
</ol>
</div>
`,
}

258
modules/markup/mdstripper/mdstripper.go
View file

@ -6,43 +6,39 @@ package mdstripper
import (
"bytes"
"io"
"github.com/russross/blackfriday"
"github.com/russross/blackfriday/v2"
)
// MarkdownStripper extends blackfriday.Renderer
type MarkdownStripper struct {
blackfriday.Renderer
links []string
coallesce bool
empty bool
}
const (
blackfridayExtensions = 0 |
blackfriday.EXTENSION_NO_INTRA_EMPHASIS |
blackfriday.EXTENSION_TABLES |
blackfriday.EXTENSION_FENCED_CODE |
blackfriday.EXTENSION_STRIKETHROUGH |
blackfriday.EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK |
blackfriday.EXTENSION_DEFINITION_LISTS |
blackfriday.EXTENSION_FOOTNOTES |
blackfriday.EXTENSION_HEADER_IDS |
blackfriday.EXTENSION_AUTO_HEADER_IDS |
blackfriday.NoIntraEmphasis |
blackfriday.Tables |
blackfriday.FencedCode |
blackfriday.Strikethrough |
blackfriday.NoEmptyLineBeforeBlock |
blackfriday.DefinitionLists |
blackfriday.Footnotes |
blackfriday.HeadingIDs |
blackfriday.AutoHeadingIDs |
// Not included in modules/markup/markdown/markdown.go;
// required here to process inline links
blackfriday.EXTENSION_AUTOLINK
blackfriday.Autolink
)
//revive:disable:var-naming Implementing the Rendering interface requires breaking some linting rules
// StripMarkdown parses markdown content by removing all markup and code blocks
// in order to extract links and other references
func StripMarkdown(rawBytes []byte) (string, []string) {
stripper := &MarkdownStripper{
links: make([]string, 0, 10),
}
body := blackfriday.Markdown(rawBytes, stripper, blackfridayExtensions)
return string(body), stripper.GetLinks()
buf, links := StripMarkdownBytes(rawBytes)
return string(buf), links
}
// StripMarkdownBytes parses markdown content by removing all markup and code blocks
@ -50,205 +46,67 @@ func StripMarkdown(rawBytes []byte) (string, []string) {
func StripMarkdownBytes(rawBytes []byte) ([]byte, []string) {
stripper := &MarkdownStripper{
links: make([]string, 0, 10),
empty: true,
}
body := blackfriday.Markdown(rawBytes, stripper, blackfridayExtensions)
return body, stripper.GetLinks()
parser := blackfriday.New(blackfriday.WithRenderer(stripper), blackfriday.WithExtensions(blackfridayExtensions))
ast := parser.Parse(rawBytes)
var buf bytes.Buffer
stripper.RenderHeader(&buf, ast)
ast.Walk(func(node *blackfriday.Node, entering bool) blackfriday.WalkStatus {
return stripper.RenderNode(&buf, node, entering)
})
stripper.RenderFooter(&buf, ast)
return buf.Bytes(), stripper.GetLinks()
}
// block-level callbacks
// BlockCode dummy function to proceed with rendering
func (r *MarkdownStripper) BlockCode(out *bytes.Buffer, text []byte, infoString string) {
// Not rendered
// RenderNode is the main rendering method. It will be called once for
// every leaf node and twice for every non-leaf node (first with
// entering=true, then with entering=false). The method should write its
// rendition of the node to the supplied writer w.
func (r *MarkdownStripper) RenderNode(w io.Writer, node *blackfriday.Node, entering bool) blackfriday.WalkStatus {
if !entering {
return blackfriday.GoToNext
}
switch node.Type {
case blackfriday.Text:
r.processString(w, node.Literal, node.Parent == nil)
return blackfriday.GoToNext
case blackfriday.Link:
r.processLink(w, node.LinkData.Destination)
r.coallesce = false
return blackfriday.SkipChildren
}
r.coallesce = false
return blackfriday.GoToNext
}
// BlockQuote dummy function to proceed with rendering
func (r *MarkdownStripper) BlockQuote(out *bytes.Buffer, text []byte) {
// FIXME: perhaps it's better to leave out block quote for this?
r.processString(out, text, false)
// RenderHeader is a method that allows the renderer to produce some
// content preceding the main body of the output document.
func (r *MarkdownStripper) RenderHeader(w io.Writer, ast *blackfriday.Node) {
}
// BlockHtml dummy function to proceed with rendering
func (r *MarkdownStripper) BlockHtml(out *bytes.Buffer, text []byte) { //nolint
// Not rendered
r.coallesce = false
// RenderFooter is a symmetric counterpart of RenderHeader.
func (r *MarkdownStripper) RenderFooter(w io.Writer, ast *blackfriday.Node) {
}
// Header dummy function to proceed with rendering
func (r *MarkdownStripper) Header(out *bytes.Buffer, text func() bool, level int, id string) {
text()
r.coallesce = false
}
// HRule dummy function to proceed with rendering
func (r *MarkdownStripper) HRule(out *bytes.Buffer) {
// Not rendered
r.coallesce = false
}
// List dummy function to proceed with rendering
func (r *MarkdownStripper) List(out *bytes.Buffer, text func() bool, flags int) {
text()
r.coallesce = false
}
// ListItem dummy function to proceed with rendering
func (r *MarkdownStripper) ListItem(out *bytes.Buffer, text []byte, flags int) {
r.processString(out, text, false)
}
// Paragraph dummy function to proceed with rendering
func (r *MarkdownStripper) Paragraph(out *bytes.Buffer, text func() bool) {
text()
r.coallesce = false
}
// Table dummy function to proceed with rendering
func (r *MarkdownStripper) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
r.processString(out, header, false)
r.processString(out, body, false)
}
// TableRow dummy function to proceed with rendering
func (r *MarkdownStripper) TableRow(out *bytes.Buffer, text []byte) {
r.processString(out, text, false)
}
// TableHeaderCell dummy function to proceed with rendering
func (r *MarkdownStripper) TableHeaderCell(out *bytes.Buffer, text []byte, flags int) {
r.processString(out, text, false)
}
// TableCell dummy function to proceed with rendering
func (r *MarkdownStripper) TableCell(out *bytes.Buffer, text []byte, flags int) {
r.processString(out, text, false)
}
// Footnotes dummy function to proceed with rendering
func (r *MarkdownStripper) Footnotes(out *bytes.Buffer, text func() bool) {
text()
}
// FootnoteItem dummy function to proceed with rendering
func (r *MarkdownStripper) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
r.processString(out, text, false)
}
// TitleBlock dummy function to proceed with rendering
func (r *MarkdownStripper) TitleBlock(out *bytes.Buffer, text []byte) {
r.processString(out, text, false)
}
// Span-level callbacks
// AutoLink dummy function to proceed with rendering
func (r *MarkdownStripper) AutoLink(out *bytes.Buffer, link []byte, kind int) {
r.processLink(out, link, []byte{})
}
// CodeSpan dummy function to proceed with rendering
func (r *MarkdownStripper) CodeSpan(out *bytes.Buffer, text []byte) {
// Not rendered
r.coallesce = false
}
// DoubleEmphasis dummy function to proceed with rendering
func (r *MarkdownStripper) DoubleEmphasis(out *bytes.Buffer, text []byte) {
r.processString(out, text, false)
}
// Emphasis dummy function to proceed with rendering
func (r *MarkdownStripper) Emphasis(out *bytes.Buffer, text []byte) {
r.processString(out, text, false)
}
// Image dummy function to proceed with rendering
func (r *MarkdownStripper) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
// Not rendered
r.coallesce = false
}
// LineBreak dummy function to proceed with rendering
func (r *MarkdownStripper) LineBreak(out *bytes.Buffer) {
// Not rendered
r.coallesce = false
}
// Link dummy function to proceed with rendering
func (r *MarkdownStripper) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
r.processLink(out, link, content)
}
// RawHtmlTag dummy function to proceed with rendering
func (r *MarkdownStripper) RawHtmlTag(out *bytes.Buffer, tag []byte) { //nolint
// Not rendered
r.coallesce = false
}
// TripleEmphasis dummy function to proceed with rendering
func (r *MarkdownStripper) TripleEmphasis(out *bytes.Buffer, text []byte) {
r.processString(out, text, false)
}
// StrikeThrough dummy function to proceed with rendering
func (r *MarkdownStripper) StrikeThrough(out *bytes.Buffer, text []byte) {
r.processString(out, text, false)
}
// FootnoteRef dummy function to proceed with rendering
func (r *MarkdownStripper) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
// Not rendered
r.coallesce = false
}
// Low-level callbacks
// Entity dummy function to proceed with rendering
func (r *MarkdownStripper) Entity(out *bytes.Buffer, entity []byte) {
// FIXME: literal entities are not parsed; perhaps they should
r.coallesce = false
}
// NormalText dummy function to proceed with rendering
func (r *MarkdownStripper) NormalText(out *bytes.Buffer, text []byte) {
r.processString(out, text, true)
}
// Header and footer
// DocumentHeader dummy function to proceed with rendering
func (r *MarkdownStripper) DocumentHeader(out *bytes.Buffer) {
r.coallesce = false
}
// DocumentFooter dummy function to proceed with rendering
func (r *MarkdownStripper) DocumentFooter(out *bytes.Buffer) {
r.coallesce = false
}
// GetFlags returns rendering flags
func (r *MarkdownStripper) GetFlags() int {
return 0
}
//revive:enable:var-naming
func doubleSpace(out *bytes.Buffer) {
if out.Len() > 0 {
out.WriteByte('\n')
func (r *MarkdownStripper) doubleSpace(w io.Writer) {
if !r.empty {
_, _ = w.Write([]byte{'\n'})
}
}
func (r *MarkdownStripper) processString(out *bytes.Buffer, text []byte, coallesce bool) {
func (r *MarkdownStripper) processString(w io.Writer, text []byte, coallesce bool) {
// Always break-up words
if !coallesce || !r.coallesce {
doubleSpace(out)
r.doubleSpace(w)
}
out.Write(text)
_, _ = w.Write(text)
r.coallesce = coallesce
r.empty = false
}
func (r *MarkdownStripper) processLink(out *bytes.Buffer, link []byte, content []byte) {
func (r *MarkdownStripper) processLink(w io.Writer, link []byte) {
// Links are processed out of band
r.links = append(r.links, string(link))
r.coallesce = false

100
modules/markup/orgmode/orgmode.go
View file

@ -5,12 +5,16 @@
package markup
import (
"bytes"
"fmt"
"html"
"strings"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/markup"
"code.gitea.io/gitea/modules/markup/markdown"
"code.gitea.io/gitea/modules/util"
"github.com/chaseadamsio/goorgeous"
"github.com/russross/blackfriday"
"github.com/niklasfasching/go-org/org"
)
func init() {
@ -32,23 +36,23 @@ func (Parser) Extensions() []string {
}
// Render renders orgmode rawbytes to HTML
func Render(rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) (result []byte) {
defer func() {
if err := recover(); err != nil {
log.Error("Panic in orgmode.Render: %v Just returning the rawBytes", err)
result = rawBytes
}
}()
htmlFlags := blackfriday.HTML_USE_XHTML
htmlFlags |= blackfriday.HTML_SKIP_STYLE
htmlFlags |= blackfriday.HTML_OMIT_CONTENTS
renderer := &markdown.Renderer{
Renderer: blackfriday.HtmlRenderer(htmlFlags, "", ""),
URLPrefix: urlPrefix,
IsWiki: isWiki,
func Render(rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) []byte {
htmlWriter := org.NewHTMLWriter()
renderer := &Renderer{
HTMLWriter: htmlWriter,
URLPrefix: urlPrefix,
IsWiki: isWiki,
}
result = goorgeous.Org(rawBytes, renderer)
return
htmlWriter.ExtendingWriter = renderer
res, err := org.New().Silent().Parse(bytes.NewReader(rawBytes), "").Write(renderer)
if err != nil {
log.Error("Panic in orgmode.Render: %v Just returning the rawBytes", err)
return rawBytes
}
return []byte(res)
}
// RenderString reners orgmode string to HTML string
@ -56,7 +60,63 @@ func RenderString(rawContent string, urlPrefix string, metas map[string]string,
return string(Render([]byte(rawContent), urlPrefix, metas, isWiki))
}
// Render implements markup.Parser
// Render reners orgmode string to HTML string
func (Parser) Render(rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) []byte {
return Render(rawBytes, urlPrefix, metas, isWiki)
}
// Renderer implements org.Writer
type Renderer struct {
*org.HTMLWriter
URLPrefix string
IsWiki bool
}
var byteMailto = []byte("mailto:")
// WriteRegularLink renders images, links or videos
func (r *Renderer) WriteRegularLink(l org.RegularLink) {
link := []byte(html.EscapeString(l.URL))
if l.Protocol == "file" {
link = link[len("file:"):]
}
if len(link) > 0 && !markup.IsLink(link) &&
link[0] != '#' && !bytes.HasPrefix(link, byteMailto) {
lnk := string(link)
if r.IsWiki {
lnk = util.URLJoin("wiki", lnk)
}
link = []byte(util.URLJoin(r.URLPrefix, lnk))
}
description := string(link)
if l.Description != nil {
description = r.nodesAsString(l.Description...)
}
switch l.Kind() {
case "image":
r.WriteString(fmt.Sprintf(`<img src="%s" alt="%s" title="%s" />`, link, description, description))
case "video":
r.WriteString(fmt.Sprintf(`<video src="%s" title="%s">%s</video>`, link, description, description))
default:
r.WriteString(fmt.Sprintf(`<a href="%s" title="%s">%s</a>`, link, description, description))
}
}
func (r *Renderer) emptyClone() *Renderer {
wcopy := *(r.HTMLWriter)
wcopy.Builder = strings.Builder{}
rcopy := *r
rcopy.HTMLWriter = &wcopy
wcopy.ExtendingWriter = &rcopy
return &rcopy
}
func (r *Renderer) nodesAsString(nodes ...org.Node) string {
tmp := r.emptyClone()
org.WriteNodes(tmp, nodes...)
return tmp.String()
}

10
modules/markup/orgmode/orgmode_test.go
View file

@ -27,12 +27,12 @@ func TestRender_StandardLinks(t *testing.T) {
assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(buffer))
}
googleRendered := `<p><a href="https://google.com/" title="https://google.com/">https://google.com/</a></p>`
googleRendered := "<p>\n<a href=\"https://google.com/\" title=\"https://google.com/\">https://google.com/</a>\n</p>"
test("[[https://google.com/]]", googleRendered)
lnk := util.URLJoin(AppSubURL, "WikiPage")
test("[[WikiPage][WikiPage]]",
`<p><a href="`+lnk+`" title="WikiPage">WikiPage</a></p>`)
"<p>\n<a href=\""+lnk+"\" title=\"WikiPage\">WikiPage</a>\n</p>")
}
func TestRender_Images(t *testing.T) {
@ -45,10 +45,8 @@ func TestRender_Images(t *testing.T) {
}
url := "../../.images/src/02/train.jpg"
title := "Train"
result := util.URLJoin(AppSubURL, url)
test(
"[[file:"+url+"]["+title+"]]",
`<p><a href="`+result+`"><img src="`+result+`" alt="`+title+`" title="`+title+`" /></a></p>`)
test("[[file:"+url+"]]",
"<p>\n<img src=\""+result+"\" alt=\""+result+"\" title=\""+result+"\" />\n</p>")
}

1
vendor/github.com/chaseadamsio/goorgeous/.gitignore generated vendored
View file

@ -1 +0,0 @@
.DS_Store

12
vendor/github.com/chaseadamsio/goorgeous/.travis.yml generated vendored
View file

@ -1,12 +0,0 @@
language: go
go:
- 1.7
before_install:
- go get golang.org/x/tools/cmd/cover
- go get github.com/mattn/goveralls
script:
- go test -v -covermode=count -coverprofile=coverage.out
- $HOME/gopath/bin/goveralls -coverprofile=coverage.out -service=travis-ci

66
vendor/github.com/chaseadamsio/goorgeous/README.org generated vendored
View file

@ -1,66 +0,0 @@
#+TITLE: chaseadamsio/goorgeous
[[https://travis-ci.org/chaseadamsio/goorgeous.svg?branch=master]]
[[https://coveralls.io/repos/github/chaseadamsio/goorgeous/badge.svg?branch=master]]
/goorgeous is a Go Org to HTML Parser./
[[file:gopher_small.gif]]
*Pronounced: Go? Org? Yes!*
#+BEGIN_QUOTE
"Org mode is for keeping notes, maintaining TODO lists, planning projects, and authoring documents with a fast and effective plain-text system."
- [[orgmode.org]]
#+END_QUOTE
The purpose of this package is to come as close as possible as parsing an =*.org= document into HTML, the same way one might publish [[http://orgmode.org/worg/org-tutorials/org-publish-html-tutorial.html][with org-publish-html from Emacs]].
* Installation
#+BEGIN_SRC sh
go get -u github.com/chaseadamsio/goorgeous
#+END_SRC
* Usage
** Org Headers
To retrieve the headers from a =[]byte=, call =OrgHeaders= and it will return a =map[string]interface{}=:
#+BEGIN_SRC go
input := "#+title: goorgeous\n* Some Headline\n"
out := goorgeous.OrgHeaders(input)
#+END_SRC
#+BEGIN_SRC go
map[string]interface{}{
"title": "goorgeous"
}
#+END_SRC
** Org Content
After importing =github.com/chaseadamsio/goorgeous=, you can call =Org= with a =[]byte= and it will return an =html= version of the content as a =[]byte=
#+BEGIN_SRC go
input := "#+TITLE: goorgeous\n* Some Headline\n"
out := goorgeous.Org(input)
#+END_SRC
=out= will be:
#+BEGIN_SRC html
<h1>Some Headline</h1>/n
#+END_SRC
* Why?
First off, I've become an unapologetic user of Emacs & ever since finding =org-mode= I use it for anything having to do with writing content, organizing my life and keeping documentation of my days/weeks/months.
Although I like Emacs & =emacs-lisp=, I publish all of my html sites with [[https://gohugo.io][Hugo Static Site Generator]] and wanted to be able to write my content in =org-mode= in Emacs rather than markdown.
Hugo's implementation of templating and speed are unmatched, so the only way I knew for sure I could continue to use Hugo and write in =org-mode= seamlessly was to write a golang parser for org content and submit a PR for Hugo to use it.
* Acknowledgements
I leaned heavily on russross' [[https://github.com/russross/blackfriday][blackfriday markdown renderer]] as both an example of how to write a parser (with some updates to leverage the go we know today) and reusing the blackfriday HTML Renderer so I didn't have to write my own!

803
vendor/github.com/chaseadamsio/goorgeous/goorgeous.go generated vendored
View file

@ -1,803 +0,0 @@
package goorgeous
import (
"bufio"
"bytes"
"regexp"
"github.com/russross/blackfriday"
"github.com/shurcooL/sanitized_anchor_name"
)
type inlineParser func(p *parser, out *bytes.Buffer, data []byte, offset int) int
type footnotes struct {
id string
def string
}
type parser struct {
r blackfriday.Renderer
inlineCallback [256]inlineParser
notes []footnotes
}
// NewParser returns a new parser with the inlineCallbacks required for org content
func NewParser(renderer blackfriday.Renderer) *parser {
p := new(parser)
p.r = renderer
p.inlineCallback['='] = generateVerbatim
p.inlineCallback['~'] = generateCode
p.inlineCallback['/'] = generateEmphasis
p.inlineCallback['_'] = generateUnderline
p.inlineCallback['*'] = generateBold
p.inlineCallback['+'] = generateStrikethrough
p.inlineCallback['['] = generateLinkOrImg
return p
}
// OrgCommon is the easiest way to parse a byte slice of org content and makes assumptions
// that the caller wants to use blackfriday's HTMLRenderer with XHTML
func OrgCommon(input []byte) []byte {
renderer := blackfriday.HtmlRenderer(blackfriday.HTML_USE_XHTML, "", "")
return OrgOptions(input, renderer)
}
// Org is a convenience name for OrgOptions
func Org(input []byte, renderer blackfriday.Renderer) []byte {
return OrgOptions(input, renderer)
}
// OrgOptions takes an org content byte slice and a renderer to use
func OrgOptions(input []byte, renderer blackfriday.Renderer) []byte {
// in the case that we need to render something in isEmpty but there isn't a new line char
input = append(input, '\n')
var output bytes.Buffer
p := NewParser(renderer)
scanner := bufio.NewScanner(bytes.NewReader(input))
// used to capture code blocks
marker := ""
syntax := ""
listType := ""
inParagraph := false
inList := false
inTable := false
inFixedWidthArea := false
var tmpBlock bytes.Buffer
for scanner.Scan() {
data := scanner.Bytes()
if !isEmpty(data) && isComment(data) || IsKeyword(data) {
switch {
case inList:
if tmpBlock.Len() > 0 {
p.generateList(&output, tmpBlock.Bytes(), listType)
}
inList = false
listType = ""
tmpBlock.Reset()
case inTable:
if tmpBlock.Len() > 0 {
p.generateTable(&output, tmpBlock.Bytes())
}
inTable = false
tmpBlock.Reset()
case inParagraph:
if tmpBlock.Len() > 0 {
p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
}
inParagraph = false
tmpBlock.Reset()
case inFixedWidthArea:
if tmpBlock.Len() > 0 {
tmpBlock.WriteString("</pre>\n")
output.Write(tmpBlock.Bytes())
}
inFixedWidthArea = false
tmpBlock.Reset()
}
}
switch {
case isEmpty(data):
switch {
case inList:
if tmpBlock.Len() > 0 {
p.generateList(&output, tmpBlock.Bytes(), listType)
}
inList = false
listType = ""
tmpBlock.Reset()
case inTable:
if tmpBlock.Len() > 0 {
p.generateTable(&output, tmpBlock.Bytes())
}
inTable = false
tmpBlock.Reset()
case inParagraph:
if tmpBlock.Len() > 0 {
p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
}
inParagraph = false
tmpBlock.Reset()
case inFixedWidthArea:
if tmpBlock.Len() > 0 {
tmpBlock.WriteString("</pre>\n")
output.Write(tmpBlock.Bytes())
}
inFixedWidthArea = false
tmpBlock.Reset()
case marker != "":
tmpBlock.WriteByte('\n')
default:
continue
}
case isPropertyDrawer(data) || marker == "PROPERTIES":
if marker == "" {
marker = "PROPERTIES"
}
if bytes.Equal(data, []byte(":END:")) {
marker = ""
}
continue
case isBlock(data) || marker != "":
matches := reBlock.FindSubmatch(data)
if len(matches) > 0 {
if string(matches[1]) == "END" {
switch marker {
case "QUOTE":
var tmpBuf bytes.Buffer
p.inline(&tmpBuf, tmpBlock.Bytes())
p.r.BlockQuote(&output, tmpBuf.Bytes())
case "CENTER":
var tmpBuf bytes.Buffer
output.WriteString("<center>\n")
p.inline(&tmpBuf, tmpBlock.Bytes())
output.Write(tmpBuf.Bytes())
output.WriteString("</center>\n")
default:
tmpBlock.WriteByte('\n')
p.r.BlockCode(&output, tmpBlock.Bytes(), syntax)
}
marker = ""
tmpBlock.Reset()
continue
}
}
if marker != "" {
if marker != "SRC" && marker != "EXAMPLE" {
var tmpBuf bytes.Buffer
tmpBuf.Write([]byte("<p>\n"))
p.inline(&tmpBuf, data)
tmpBuf.WriteByte('\n')
tmpBuf.Write([]byte("</p>\n"))
tmpBlock.Write(tmpBuf.Bytes())
} else {
tmpBlock.WriteByte('\n')
tmpBlock.Write(data)
}
} else {
marker = string(matches[2])
syntax = string(matches[3])
}
case isFootnoteDef(data):
matches := reFootnoteDef.FindSubmatch(data)
for i := range p.notes {
if p.notes[i].id == string(matches[1]) {
p.notes[i].def = string(matches[2])
}
}
case isTable(data):
if inTable != true {
inTable = true
}
tmpBlock.Write(data)
tmpBlock.WriteByte('\n')
case IsKeyword(data):
continue
case isComment(data):
p.generateComment(&output, data)
case isHeadline(data):
p.generateHeadline(&output, data)
case isDefinitionList(data):
if inList != true {
listType = "dl"
inList = true
}
var work bytes.Buffer
flags := blackfriday.LIST_TYPE_DEFINITION
matches := reDefinitionList.FindSubmatch(data)
flags |= blackfriday.LIST_TYPE_TERM
p.inline(&work, matches[1])
p.r.ListItem(&tmpBlock, work.Bytes(), flags)
work.Reset()
flags &= ^blackfriday.LIST_TYPE_TERM
p.inline(&work, matches[2])
p.r.ListItem(&tmpBlock, work.Bytes(), flags)
case isUnorderedList(data):
if inList != true {
listType = "ul"
inList = true
}
matches := reUnorderedList.FindSubmatch(data)
var work bytes.Buffer
p.inline(&work, matches[2])
p.r.ListItem(&tmpBlock, work.Bytes(), 0)
case isOrderedList(data):
if inList != true {
listType = "ol"
inList = true
}
matches := reOrderedList.FindSubmatch(data)
var work bytes.Buffer
tmpBlock.WriteString("<li")
if len(matches[2]) > 0 {
tmpBlock.WriteString(" value=\"")
tmpBlock.Write(matches[2])
tmpBlock.WriteString("\"")
matches[3] = matches[3][1:]
}
p.inline(&work, matches[3])
tmpBlock.WriteString(">")
tmpBlock.Write(work.Bytes())
tmpBlock.WriteString("</li>\n")
case isHorizontalRule(data):
p.r.HRule(&output)
case isExampleLine(data):
if inParagraph == true {
if len(tmpBlock.Bytes()) > 0 {
p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
inParagraph = false
}
tmpBlock.Reset()
}
if inFixedWidthArea != true {
tmpBlock.WriteString("<pre class=\"example\">\n")
inFixedWidthArea = true
}
matches := reExampleLine.FindSubmatch(data)
tmpBlock.Write(matches[1])
tmpBlock.WriteString("\n")
break
default:
if inParagraph == false {
inParagraph = true
if inFixedWidthArea == true {
if tmpBlock.Len() > 0 {
tmpBlock.WriteString("</pre>")
output.Write(tmpBlock.Bytes())
}
inFixedWidthArea = false
tmpBlock.Reset()
}
}
tmpBlock.Write(data)
tmpBlock.WriteByte('\n')
}
}
if len(tmpBlock.Bytes()) > 0 {
if inParagraph == true {
p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
} else if inFixedWidthArea == true {
tmpBlock.WriteString("</pre>\n")
output.Write(tmpBlock.Bytes())
}
}
// Writing footnote def. list
if len(p.notes) > 0 {
flags := blackfriday.LIST_ITEM_BEGINNING_OF_LIST
p.r.Footnotes(&output, func() bool {
for i := range p.notes {
p.r.FootnoteItem(&output, []byte(p.notes[i].id), []byte(p.notes[i].def), flags)
}
return true
})
}
return output.Bytes()
}
// Org Syntax has been broken up into 4 distinct sections based on
// the org-syntax draft (http://orgmode.org/worg/dev/org-syntax.html):
// - Headlines
// - Greater Elements
// - Elements
// - Objects
// Headlines
func isHeadline(data []byte) bool {
if !charMatches(data[0], '*') {
return false
}
level := 0
for level < 6 && charMatches(data[level], '*') {
level++
}
return charMatches(data[level], ' ')
}
func (p *parser) generateHeadline(out *bytes.Buffer, data []byte) {
level := 1
status := ""
priority := ""
for level < 6 && data[level] == '*' {
level++
}
start := skipChar(data, level, ' ')
data = data[start:]
i := 0
// Check if has a status so it can be rendered as a separate span that can be hidden or
// modified with CSS classes
if hasStatus(data[i:4]) {
status = string(data[i:4])
i += 5 // one extra character for the next whitespace
}
// Check if the next byte is a priority marker
if data[i] == '[' && hasPriority(data[i+1]) {
priority = string(data[i+1])
i += 4 // for "[c]" + ' '
}
tags, tagsFound := findTags(data, i)
headlineID := sanitized_anchor_name.Create(string(data[i:]))
generate := func() bool {
dataEnd := len(data)
if tagsFound > 0 {
dataEnd = tagsFound
}
headline := bytes.TrimRight(data[i:dataEnd], " \t")
if status != "" {
out.WriteString("<span class=\"todo " + status + "\">" + status + "</span>")
out.WriteByte(' ')
}
if priority != "" {
out.WriteString("<span class=\"priority " + priority + "\">[" + priority + "]</span>")
out.WriteByte(' ')
}
p.inline(out, headline)
if tagsFound > 0 {
for _, tag := range tags {
out.WriteByte(' ')
out.WriteString("<span class=\"tags " + tag + "\">" + tag + "</span>")
out.WriteByte(' ')
}
}
return true
}
p.r.Header(out, generate, level, headlineID)
}
func hasStatus(data []byte) bool {
return bytes.Contains(data, []byte("TODO")) || bytes.Contains(data, []byte("DONE"))
}
func hasPriority(char byte) bool {
return (charMatches(char, 'A') || charMatches(char, 'B') || charMatches(char, 'C'))
}
func findTags(data []byte, start int) ([]string, int) {
tags := []string{}
tagOpener := 0
tagMarker := tagOpener
for tIdx := start; tIdx < len(data); tIdx++ {
if tagMarker > 0 && data[tIdx] == ':' {
tags = append(tags, string(data[tagMarker+1:tIdx]))
tagMarker = tIdx
}
if data[tIdx] == ':' && tagOpener == 0 && data[tIdx-1] == ' ' {
tagMarker = tIdx
tagOpener = tIdx
}
}
return tags, tagOpener
}
// Greater Elements
// ~~ Definition Lists
var reDefinitionList = regexp.MustCompile(`^\s*-\s+(.+?)\s+::\s+(.*)`)
func isDefinitionList(data []byte) bool {
return reDefinitionList.Match(data)
}
// ~~ Example lines
var reExampleLine = regexp.MustCompile(`^\s*:\s(\s*.*)|^\s*:$`)
func isExampleLine(data []byte) bool {
return reExampleLine.Match(data)
}
// ~~ Ordered Lists
var reOrderedList = regexp.MustCompile(`^(\s*)\d+\.\s+\[?@?(\d*)\]?(.+)`)
func isOrderedList(data []byte) bool {
return reOrderedList.Match(data)
}
// ~~ Unordered Lists
var reUnorderedList = regexp.MustCompile(`^(\s*)[-\+]\s+(.+)`)
func isUnorderedList(data []byte) bool {
return reUnorderedList.Match(data)
}
// ~~ Tables
var reTableHeaders = regexp.MustCompile(`^[|+-]*$`)
func isTable(data []byte) bool {
return charMatches(data[0], '|')
}
func (p *parser) generateTable(output *bytes.Buffer, data []byte) {
var table bytes.Buffer
rows := bytes.Split(bytes.Trim(data, "\n"), []byte("\n"))
hasTableHeaders := len(rows) > 1
if len(rows) > 1 {
hasTableHeaders = reTableHeaders.Match(rows[1])
}
tbodySet := false
for idx, row := range rows {
var rowBuff bytes.Buffer
if hasTableHeaders && idx == 0 {
table.WriteString("<thead>")
for _, cell := range bytes.Split(row[1:len(row)-1], []byte("|")) {
p.r.TableHeaderCell(&rowBuff, bytes.Trim(cell, " \t"), 0)
}
p.r.TableRow(&table, rowBuff.Bytes())
table.WriteString("</thead>\n")
} else if hasTableHeaders && idx == 1 {
continue
} else {
if !tbodySet {
table.WriteString("<tbody>")
tbodySet = true
}
if !reTableHeaders.Match(row) {
for _, cell := range bytes.Split(row[1:len(row)-1], []byte("|")) {
var cellBuff bytes.Buffer
p.inline(&cellBuff, bytes.Trim(cell, " \t"))
p.r.TableCell(&rowBuff, cellBuff.Bytes(), 0)
}
p.r.TableRow(&table, rowBuff.Bytes())
}
if tbodySet && idx == len(rows)-1 {
table.WriteString("</tbody>\n")
tbodySet = false
}
}
}
output.WriteString("\n<table>\n")
output.Write(table.Bytes())
output.WriteString("</table>\n")
}
// ~~ Property Drawers
func isPropertyDrawer(data []byte) bool {
return bytes.Equal(data, []byte(":PROPERTIES:"))
}
// ~~ Dynamic Blocks
var reBlock = regexp.MustCompile(`^#\+(BEGIN|END)_(\w+)\s*([0-9A-Za-z_\-]*)?`)
func isBlock(data []byte) bool {
return reBlock.Match(data)
}
// ~~ Footnotes
var reFootnoteDef = regexp.MustCompile(`^\[fn:([\w]+)\] +(.+)`)
func isFootnoteDef(data []byte) bool {
return reFootnoteDef.Match(data)
}
// Elements
// ~~ Keywords
func IsKeyword(data []byte) bool {
return len(data) > 2 && charMatches(data[0], '#') && charMatches(data[1], '+') && !charMatches(data[2], ' ')
}
// ~~ Comments
func isComment(data []byte) bool {
return charMatches(data[0], '#') && charMatches(data[1], ' ')
}
func (p *parser) generateComment(out *bytes.Buffer, data []byte) {
var work bytes.Buffer
work.WriteString("<!-- ")
work.Write(data[2:])
work.WriteString(" -->")
work.WriteByte('\n')
out.Write(work.Bytes())
}
// ~~ Horizontal Rules
var reHorizontalRule = regexp.MustCompile(`^\s*?-----\s?$`)
func isHorizontalRule(data []byte) bool {
return reHorizontalRule.Match(data)
}
// ~~ Paragraphs
func (p *parser) generateParagraph(out *bytes.Buffer, data []byte) {
generate := func() bool {
p.inline(out, bytes.Trim(data, " "))
return true
}
p.r.Paragraph(out, generate)
}
func (p *parser) generateList(output *bytes.Buffer, data []byte, listType string) {
generateList := func() bool {
output.WriteByte('\n')
p.inline(output, bytes.Trim(data, " "))
return true
}
switch listType {
case "ul":
p.r.List(output, generateList, 0)
case "ol":
p.r.List(output, generateList, blackfriday.LIST_TYPE_ORDERED)
case "dl":
p.r.List(output, generateList, blackfriday.LIST_TYPE_DEFINITION)
}
}
// Objects
func (p *parser) inline(out *bytes.Buffer, data []byte) {
i, end := 0, 0
for i < len(data) {
for end < len(data) && p.inlineCallback[data[end]] == nil {
end++
}
p.r.Entity(out, data[i:end])
if end >= len(data) {
break
}
i = end
handler := p.inlineCallback[data[i]]
if consumed := handler(p, out, data, i); consumed > 0 {
i += consumed
end = i
continue
}
end = i + 1
}
}
func isAcceptablePreOpeningChar(dataIn, data []byte, offset int) bool {
if len(dataIn) == len(data) {
return true
}
char := dataIn[offset-1]
return charMatches(char, ' ') || isPreChar(char)
}
func isPreChar(char byte) bool {
return charMatches(char, '>') || charMatches(char, '(') || charMatches(char, '{') || charMatches(char, '[')
}
func isAcceptablePostClosingChar(char byte) bool {
return charMatches(char, ' ') || isTerminatingChar(char)
}
func isTerminatingChar(char byte) bool {
return charMatches(char, '.') || charMatches(char, ',') || charMatches(char, '?') || charMatches(char, '!') || charMatches(char, ')') || charMatches(char, '}') || charMatches(char, ']')
}
func findLastCharInInline(data []byte, char byte) int {
timesFound := 0
last := 0
// Start from character after the inline indicator
for i := 1; i < len(data); i++ {
if timesFound == 1 {
break
}
if data[i] == char {
if len(data) == i+1 || (len(data) > i+1 && isAcceptablePostClosingChar(data[i+1])) {
last = i
timesFound += 1
}
}
}
return last
}
func generator(p *parser, out *bytes.Buffer, dataIn []byte, offset int, char byte, doInline bool, renderer func(*bytes.Buffer, []byte)) int {
data := dataIn[offset:]
c := byte(char)
start := 1
i := start
if len(data) <= 1 {
return 0
}
lastCharInside := findLastCharInInline(data, c)
// Org mode spec says a non-whitespace character must immediately follow.
// if the current char is the marker, then there's no text between, not a candidate
if isSpace(data[i]) || lastCharInside == i || !isAcceptablePreOpeningChar(dataIn, data, offset) {
return 0
}
if lastCharInside > 0 {
var work bytes.Buffer
if doInline {
p.inline(&work, data[start:lastCharInside])
renderer(out, work.Bytes())
} else {
renderer(out, data[start:lastCharInside])
}
next := lastCharInside + 1
return next
}
return 0
}
// ~~ Text Markup
func generateVerbatim(p *parser, out *bytes.Buffer, data []byte, offset int) int {
return generator(p, out, data, offset, '=', false, p.r.CodeSpan)
}
func generateCode(p *parser, out *bytes.Buffer, data []byte, offset int) int {
return generator(p, out, data, offset, '~', false, p.r.CodeSpan)
}
func generateEmphasis(p *parser, out *bytes.Buffer, data []byte, offset int) int {
return generator(p, out, data, offset, '/', true, p.r.Emphasis)
}
func generateUnderline(p *parser, out *bytes.Buffer, data []byte, offset int) int {
underline := func(out *bytes.Buffer, text []byte) {
out.WriteString("<span style=\"text-decoration: underline;\">")
out.Write(text)
out.WriteString("</span>")
}
return generator(p, out, data, offset, '_', true, underline)
}
func generateBold(p *parser, out *bytes.Buffer, data []byte, offset int) int {
return generator(p, out, data, offset, '*', true, p.r.DoubleEmphasis)
}
func generateStrikethrough(p *parser, out *bytes.Buffer, data []byte, offset int) int {
return generator(p, out, data, offset, '+', true, p.r.StrikeThrough)
}
// ~~ Images and Links (inc. Footnote)
var reLinkOrImg = regexp.MustCompile(`\[\[(.+?)\]\[?(.*?)\]?\]`)
func generateLinkOrImg(p *parser, out *bytes.Buffer, data []byte, offset int) int {
data = data[offset+1:]
start := 1
i := start
var hyperlink []byte
isImage := false
isFootnote := false
closedLink := false
hasContent := false
if bytes.Equal(data[0:3], []byte("fn:")) {
isFootnote = true
} else if data[0] != '[' {
return 0
}
if bytes.Equal(data[1:6], []byte("file:")) {
isImage = true
}
for i < len(data) {
currChar := data[i]
switch {
case charMatches(currChar, ']') && closedLink == false:
if isImage {
hyperlink = data[start+5 : i]
} else if isFootnote {
refid := data[start+2 : i]
if bytes.Equal(refid, bytes.Trim(refid, " ")) {
p.notes = append(p.notes, footnotes{string(refid), "DEFINITION NOT FOUND"})
p.r.FootnoteRef(out, refid, len(p.notes))
return i + 2
} else {
return 0
}
} else if bytes.Equal(data[i-4:i], []byte(".org")) {
orgStart := start
if bytes.Equal(data[orgStart:orgStart+2], []byte("./")) {
orgStart = orgStart + 1
}
hyperlink = data[orgStart : i-4]
} else {
hyperlink = data[start:i]
}
closedLink = true
case charMatches(currChar, '['):
start = i + 1
hasContent = true
case charMatches(currChar, ']') && closedLink == true && hasContent == true && isImage == true:
p.r.Image(out, hyperlink, data[start:i], data[start:i])
return i + 3
case charMatches(currChar, ']') && closedLink == true && hasContent == true:
var tmpBuf bytes.Buffer
p.inline(&tmpBuf, data[start:i])
p.r.Link(out, hyperlink, tmpBuf.Bytes(), tmpBuf.Bytes())
return i + 3
case charMatches(currChar, ']') && closedLink == true && hasContent == false && isImage == true:
p.r.Image(out, hyperlink, hyperlink, hyperlink)
return i + 2
case charMatches(currChar, ']') && closedLink == true && hasContent == false:
p.r.Link(out, hyperlink, hyperlink, hyperlink)
return i + 2
}
i++
}
return 0
}
// Helpers
func skipChar(data []byte, start int, char byte) int {
i := start
for i < len(data) && charMatches(data[i], char) {
i++
}
return i
}
func isSpace(char byte) bool {
return charMatches(char, ' ')
}
func isEmpty(data []byte) bool {
if len(data) == 0 {
return true
}
for i := 0; i < len(data) && !charMatches(data[i], '\n'); i++ {
if !charMatches(data[i], ' ') && !charMatches(data[i], '\t') {
return false
}
}
return true
}
func charMatches(a byte, b byte) bool {
return a == b
}

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vendor/github.com/chaseadamsio/goorgeous/gopher.gif generated vendored
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vendor/github.com/chaseadamsio/goorgeous/gopher_small.gif generated vendored
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70
vendor/github.com/chaseadamsio/goorgeous/header.go generated vendored
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@ -1,70 +0,0 @@
package goorgeous
import (
"bufio"
"bytes"
"regexp"
"strings"
)
// ExtractOrgHeaders finds and returns all of the headers
// from a bufio.Reader and returns them as their own byte slice
func ExtractOrgHeaders(r *bufio.Reader) (fm []byte, err error) {
var out bytes.Buffer
endOfHeaders := true
for endOfHeaders {
p, err := r.Peek(2)
if err != nil {
return nil, err
}
if !charMatches(p[0], '#') && !charMatches(p[1], '+') {
endOfHeaders = false
break
}
line, _, err := r.ReadLine()
if err != nil {
return nil, err
}
out.Write(line)
out.WriteByte('\n')
}
return out.Bytes(), nil
}
var reHeader = regexp.MustCompile(`^#\+(\w+?): (.*)`)
// OrgHeaders find all of the headers from a byte slice and returns
// them as a map of string interface
func OrgHeaders(input []byte) (map[string]interface{}, error) {
out := make(map[string]interface{})
scanner := bufio.NewScanner(bytes.NewReader(input))
for scanner.Scan() {
data := scanner.Bytes()
if !charMatches(data[0], '#') && !charMatches(data[1], '+') {
return out, nil
}
matches := reHeader.FindSubmatch(data)
if len(matches) < 3 {
continue
}
key := string(matches[1])
val := matches[2]
switch {
case strings.ToLower(key) == "tags" || strings.ToLower(key) == "categories" || strings.ToLower(key) == "aliases":
bTags := bytes.Split(val, []byte(" "))
tags := make([]string, len(bTags))
for idx, tag := range bTags {
tags[idx] = string(tag)
}
out[key] = tags
default:
out[key] = string(val)
}
}
return out, nil
}

2
vendor/github.com/chaseadamsio/goorgeous/LICENSE → vendor/github.com/niklasfasching/go-org/LICENSE generated vendored
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@ -1,6 +1,6 @@
MIT License
Copyright (c) 2017 Chase Adams <realchaseadams@gmail.com>
Copyright (c) 2018 Niklas Fasching
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal

84
vendor/github.com/niklasfasching/go-org/org/block.go generated vendored Normal file
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package org
import (
"regexp"
"strings"
"unicode"
)
type Block struct {
Name string
Parameters []string
Children []Node
}
type Example struct {
Children []Node
}
var exampleLineRegexp = regexp.MustCompile(`^(\s*):(\s(.*)|\s*$)`)
var beginBlockRegexp = regexp.MustCompile(`(?i)^(\s*)#\+BEGIN_(\w+)(.*)`)
var endBlockRegexp = regexp.MustCompile(`(?i)^(\s*)#\+END_(\w+)`)
func lexBlock(line string) (token, bool) {
if m := beginBlockRegexp.FindStringSubmatch(line); m != nil {
return token{"beginBlock", len(m[1]), strings.ToUpper(m[2]), m}, true
} else if m := endBlockRegexp.FindStringSubmatch(line); m != nil {
return token{"endBlock", len(m[1]), strings.ToUpper(m[2]), m}, true
}
return nilToken, false
}
func lexExample(line string) (token, bool) {
if m := exampleLineRegexp.FindStringSubmatch(line); m != nil {
return token{"example", len(m[1]), m[3], m}, true
}
return nilToken, false
}
func isRawTextBlock(name string) bool { return name == "SRC" || name == "EXAMPLE" || name == "EXPORT" }
func (d *Document) parseBlock(i int, parentStop stopFn) (int, Node) {
t, start := d.tokens[i], i
name, parameters := t.content, strings.Fields(t.matches[3])
trim := trimIndentUpTo(d.tokens[i].lvl)
stop := func(d *Document, i int) bool {
return i >= len(d.tokens) || (d.tokens[i].kind == "endBlock" && d.tokens[i].content == name)
}
block, i := Block{name, parameters, nil}, i+1
if isRawTextBlock(name) {
rawText := ""
for ; !stop(d, i); i++ {
rawText += trim(d.tokens[i].matches[0]) + "\n"
}
block.Children = d.parseRawInline(rawText)
} else {
consumed, nodes := d.parseMany(i, stop)
block.Children = nodes
i += consumed
}
if i < len(d.tokens) && d.tokens[i].kind == "endBlock" && d.tokens[i].content == name {
return i + 1 - start, block
}
return 0, nil
}
func (d *Document) parseExample(i int, parentStop stopFn) (int, Node) {
example, start := Example{}, i
for ; !parentStop(d, i) && d.tokens[i].kind == "example"; i++ {
example.Children = append(example.Children, Text{d.tokens[i].content, true})
}
return i - start, example
}
func trimIndentUpTo(max int) func(string) string {
return func(line string) string {
i := 0
for ; i < len(line) && i < max && unicode.IsSpace(rune(line[i])); i++ {
}
return line[i:]
}
}
func (n Example) String() string { return orgWriter.nodesAsString(n) }
func (n Block) String() string { return orgWriter.nodesAsString(n) }

260
vendor/github.com/niklasfasching/go-org/org/document.go generated vendored Normal file
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@ -0,0 +1,260 @@
// Package org is an Org mode syntax processor.
//
// It parses plain text into an AST and can export it as HTML or pretty printed Org mode syntax.
// Further export formats can be defined using the Writer interface.
//
// You probably want to start with something like this:
// input := strings.NewReader("Your Org mode input")
// html, err := org.New().Parse(input, "./").Write(org.NewHTMLWriter())
// if err != nil {
// log.Fatalf("Something went wrong: %s", err)
// }
// log.Print(html)
package org
import (
"bufio"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"strings"
)
type Configuration struct {
MaxEmphasisNewLines int // Maximum number of newlines inside an emphasis. See org-emphasis-regexp-components newline.
AutoLink bool // Try to convert text passages that look like hyperlinks into hyperlinks.
DefaultSettings map[string]string // Default values for settings that are overriden by setting the same key in BufferSettings.
Log *log.Logger // Log is used to print warnings during parsing.
ReadFile func(filename string) ([]byte, error) // ReadFile is used to read e.g. #+INCLUDE files.
}
// Document contains the parsing results and a pointer to the Configuration.
type Document struct {
*Configuration
Path string // Path of the file containing the parse input - used to resolve relative paths during parsing (e.g. INCLUDE).
tokens []token
Nodes []Node
NamedNodes map[string]Node
Outline Outline // Outline is a Table Of Contents for the document and contains all sections (headline + content).
BufferSettings map[string]string // Settings contains all settings that were parsed from keywords.
Error error
}
// Node represents a parsed node of the document.
type Node interface {
String() string // String returns the pretty printed Org mode string for the node (see OrgWriter).
}
type lexFn = func(line string) (t token, ok bool)
type parseFn = func(*Document, int, stopFn) (int, Node)
type stopFn = func(*Document, int) bool
type token struct {
kind string
lvl int
content string
matches []string
}
var lexFns = []lexFn{
lexHeadline,
lexDrawer,
lexBlock,
lexList,
lexTable,
lexHorizontalRule,
lexKeywordOrComment,
lexFootnoteDefinition,
lexExample,
lexText,
}
var nilToken = token{"nil", -1, "", nil}
var orgWriter = NewOrgWriter()
// New returns a new Configuration with (hopefully) sane defaults.
func New() *Configuration {
return &Configuration{
AutoLink: true,
MaxEmphasisNewLines: 1,
DefaultSettings: map[string]string{
"TODO": "TODO | DONE",
"EXCLUDE_TAGS": "noexport",
"OPTIONS": "toc:t <:t e:t f:t pri:t todo:t tags:t",
},
Log: log.New(os.Stderr, "go-org: ", 0),
ReadFile: ioutil.ReadFile,
}
}
// String returns the pretty printed Org mode string for the given nodes (see OrgWriter).
func String(nodes []Node) string { return orgWriter.nodesAsString(nodes...) }
// Write is called after with an instance of the Writer interface to export a parsed Document into another format.
func (d *Document) Write(w Writer) (out string, err error) {
defer func() {
if recovered := recover(); recovered != nil {
err = fmt.Errorf("could not write output: %s", recovered)
}
}()
if d.Error != nil {
return "", d.Error
} else if d.Nodes == nil {
return "", fmt.Errorf("could not write output: parse was not called")
}
w.Before(d)
WriteNodes(w, d.Nodes...)
w.After(d)
return w.String(), err
}
// Parse parses the input into an AST (and some other helpful fields like Outline).
// To allow method chaining, errors are stored in document.Error rather than being returned.
func (c *Configuration) Parse(input io.Reader, path string) (d *Document) {
outlineSection := &Section{}
d = &Document{
Configuration: c,
Outline: Outline{outlineSection, outlineSection, 0},
BufferSettings: map[string]string{},
NamedNodes: map[string]Node{},
Path: path,
}
defer func() {
if recovered := recover(); recovered != nil {
d.Error = fmt.Errorf("could not parse input: %v", recovered)
}
}()
if d.tokens != nil {
d.Error = fmt.Errorf("parse was called multiple times")
}
d.tokenize(input)
_, nodes := d.parseMany(0, func(d *Document, i int) bool { return i >= len(d.tokens) })
d.Nodes = nodes
return d
}
// Silent disables all logging of warnings during parsing.
func (c *Configuration) Silent() *Configuration {
c.Log = log.New(ioutil.Discard, "", 0)
return c
}
func (d *Document) tokenize(input io.Reader) {
d.tokens = []token{}
scanner := bufio.NewScanner(input)
for scanner.Scan() {
d.tokens = append(d.tokens, tokenize(scanner.Text()))
}
if err := scanner.Err(); err != nil {
d.Error = fmt.Errorf("could not tokenize input: %s", err)
}
}
// Get returns the value for key in BufferSettings or DefaultSettings if key does not exist in the former
func (d *Document) Get(key string) string {
if v, ok := d.BufferSettings[key]; ok {
return v
}
if v, ok := d.DefaultSettings[key]; ok {
return v
}
return ""
}
// GetOption returns the value associated to the export option key
// Currently supported options:
// - < (export timestamps)
// - e (export org entities)
// - f (export footnotes)
// - toc (export table of content)
// - todo (export headline todo status)
// - pri (export headline priority)
// - tags (export headline tags)
// see https://orgmode.org/manual/Export-settings.html for more information
func (d *Document) GetOption(key string) bool {
get := func(settings map[string]string) string {
for _, field := range strings.Fields(settings["OPTIONS"]) {
if strings.HasPrefix(field, key+":") {
return field[len(key)+1:]
}
}
return ""
}
value := get(d.BufferSettings)
if value == "" {
value = get(d.DefaultSettings)
}
switch value {
case "t":
return true
case "nil":
return false
default:
d.Log.Printf("Bad value for export option %s (%s)", key, value)
return false
}
}
func (d *Document) parseOne(i int, stop stopFn) (consumed int, node Node) {
switch d.tokens[i].kind {
case "unorderedList", "orderedList":
consumed, node = d.parseList(i, stop)
case "tableRow", "tableSeparator":
consumed, node = d.parseTable(i, stop)
case "beginBlock":
consumed, node = d.parseBlock(i, stop)
case "beginDrawer":
consumed, node = d.parseDrawer(i, stop)
case "text":
consumed, node = d.parseParagraph(i, stop)
case "example":
consumed, node = d.parseExample(i, stop)
case "horizontalRule":
consumed, node = d.parseHorizontalRule(i, stop)
case "comment":
consumed, node = d.parseComment(i, stop)
case "keyword":
consumed, node = d.parseKeyword(i, stop)
case "headline":
consumed, node = d.parseHeadline(i, stop)
case "footnoteDefinition":
consumed, node = d.parseFootnoteDefinition(i, stop)
}
if consumed != 0 {
return consumed, node
}
d.Log.Printf("Could not parse token %#v: Falling back to treating it as plain text.", d.tokens[i])
m := plainTextRegexp.FindStringSubmatch(d.tokens[i].matches[0])
d.tokens[i] = token{"text", len(m[1]), m[2], m}
return d.parseOne(i, stop)
}
func (d *Document) parseMany(i int, stop stopFn) (int, []Node) {
start, nodes := i, []Node{}
for i < len(d.tokens) && !stop(d, i) {
consumed, node := d.parseOne(i, stop)
i += consumed
nodes = append(nodes, node)
}
return i - start, nodes
}
func (d *Document) addHeadline(headline *Headline) int {
current := &Section{Headline: headline}
d.Outline.last.add(current)
d.Outline.count++
d.Outline.last = current
return d.Outline.count
}
func tokenize(line string) token {
for _, lexFn := range lexFns {
if token, ok := lexFn(line); ok {
return token
}
}
panic(fmt.Sprintf("could not lex line: %s", line))
}

97
vendor/github.com/niklasfasching/go-org/org/drawer.go generated vendored Normal file
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@ -0,0 +1,97 @@
package org
import (
"regexp"
"strings"
)
type Drawer struct {
Name string
Children []Node
}
type PropertyDrawer struct {
Properties [][]string
}
var beginDrawerRegexp = regexp.MustCompile(`^(\s*):(\S+):\s*$`)
var endDrawerRegexp = regexp.MustCompile(`^(\s*):END:\s*$`)
var propertyRegexp = regexp.MustCompile(`^(\s*):(\S+):(\s+(.*)$|$)`)
func lexDrawer(line string) (token, bool) {
if m := endDrawerRegexp.FindStringSubmatch(line); m != nil {
return token{"endDrawer", len(m[1]), "", m}, true
} else if m := beginDrawerRegexp.FindStringSubmatch(line); m != nil {
return token{"beginDrawer", len(m[1]), strings.ToUpper(m[2]), m}, true
}
return nilToken, false
}
func (d *Document) parseDrawer(i int, parentStop stopFn) (int, Node) {
name := strings.ToUpper(d.tokens[i].content)
if name == "PROPERTIES" {
return d.parsePropertyDrawer(i, parentStop)
}
drawer, start := Drawer{Name: name}, i
i++
stop := func(d *Document, i int) bool {
if parentStop(d, i) {
return true
}
kind := d.tokens[i].kind
return kind == "beginDrawer" || kind == "endDrawer" || kind == "headline"
}
for {
consumed, nodes := d.parseMany(i, stop)
i += consumed
drawer.Children = append(drawer.Children, nodes...)
if i < len(d.tokens) && d.tokens[i].kind == "beginDrawer" {
p := Paragraph{[]Node{Text{":" + d.tokens[i].content + ":", false}}}
drawer.Children = append(drawer.Children, p)
i++
} else {
break
}
}
if i < len(d.tokens) && d.tokens[i].kind == "endDrawer" {
i++
}
return i - start, drawer
}
func (d *Document) parsePropertyDrawer(i int, parentStop stopFn) (int, Node) {
drawer, start := PropertyDrawer{}, i
i++
stop := func(d *Document, i int) bool {
return parentStop(d, i) || (d.tokens[i].kind != "text" && d.tokens[i].kind != "beginDrawer")
}
for ; !stop(d, i); i++ {
m := propertyRegexp.FindStringSubmatch(d.tokens[i].matches[0])
if m == nil {
return 0, nil
}
k, v := strings.ToUpper(m[2]), strings.TrimSpace(m[4])
drawer.Properties = append(drawer.Properties, []string{k, v})
}
if i < len(d.tokens) && d.tokens[i].kind == "endDrawer" {
i++
} else {
return 0, nil
}
return i - start, drawer
}
func (d *PropertyDrawer) Get(key string) (string, bool) {
if d == nil {
return "", false
}
for _, kvPair := range d.Properties {
if kvPair[0] == key {
return kvPair[1], true
}
}
return "", false
}
func (n Drawer) String() string { return orgWriter.nodesAsString(n) }
func (n PropertyDrawer) String() string { return orgWriter.nodesAsString(n) }

35
vendor/github.com/niklasfasching/go-org/org/footnote.go generated vendored Normal file
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@ -0,0 +1,35 @@
package org
import (
"regexp"
)
type FootnoteDefinition struct {
Name string
Children []Node
Inline bool
}
var footnoteDefinitionRegexp = regexp.MustCompile(`^\[fn:([\w-]+)\](\s+(.+)|\s*$)`)
func lexFootnoteDefinition(line string) (token, bool) {
if m := footnoteDefinitionRegexp.FindStringSubmatch(line); m != nil {
return token{"footnoteDefinition", 0, m[1], m}, true
}
return nilToken, false
}
func (d *Document) parseFootnoteDefinition(i int, parentStop stopFn) (int, Node) {
start, name := i, d.tokens[i].content
d.tokens[i] = tokenize(d.tokens[i].matches[2])
stop := func(d *Document, i int) bool {
return parentStop(d, i) ||
(isSecondBlankLine(d, i) && i > start+1) ||
d.tokens[i].kind == "headline" || d.tokens[i].kind == "footnoteDefinition"
}
consumed, nodes := d.parseMany(i, stop)
definition := FootnoteDefinition{name, nodes, false}
return consumed, definition
}
func (n FootnoteDefinition) String() string { return orgWriter.nodesAsString(n) }

27
vendor/github.com/niklasfasching/go-org/org/fuzz.go generated vendored Normal file
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@ -0,0 +1,27 @@
// +build gofuzz
package org
import (
"bytes"
"strings"
)
// Fuzz function to be used by https://github.com/dvyukov/go-fuzz
func Fuzz(input []byte) int {
conf := New().Silent()
d := conf.Parse(bytes.NewReader(input), "")
orgOutput, err := d.Write(NewOrgWriter())
if err != nil {
panic(err)
}
htmlOutputA, err := d.Write(NewHTMLWriter())
if err != nil {
panic(err)
}
htmlOutputB, err := conf.Parse(strings.NewReader(orgOutput), "").Write(NewHTMLWriter())
if htmlOutputA != htmlOutputB {
panic("rendered org results in different html than original input")
}
return 0
}

101
vendor/github.com/niklasfasching/go-org/org/headline.go generated vendored Normal file
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@ -0,0 +1,101 @@
package org
import (
"fmt"
"regexp"
"strings"
"unicode"
)
type Outline struct {
*Section
last *Section
count int
}
type Section struct {
Headline *Headline
Parent *Section
Children []*Section
}
type Headline struct {
Index int
Lvl int
Status string
Priority string
Properties *PropertyDrawer
Title []Node
Tags []string
Children []Node
}
var headlineRegexp = regexp.MustCompile(`^([*]+)\s+(.*)`)
var tagRegexp = regexp.MustCompile(`(.*?)\s+(:[A-Za-z0-9_@#%:]+:\s*$)`)
func lexHeadline(line string) (token, bool) {
if m := headlineRegexp.FindStringSubmatch(line); m != nil {
return token{"headline", len(m[1]), m[2], m}, true
}
return nilToken, false
}
func (d *Document) parseHeadline(i int, parentStop stopFn) (int, Node) {
t, headline := d.tokens[i], Headline{}
headline.Lvl = t.lvl
headline.Index = d.addHeadline(&headline)
text := t.content
todoKeywords := strings.FieldsFunc(d.Get("TODO"), func(r rune) bool { return unicode.IsSpace(r) || r == '|' })
for _, k := range todoKeywords {
if strings.HasPrefix(text, k) && len(text) > len(k) && unicode.IsSpace(rune(text[len(k)])) {
headline.Status = k
text = text[len(k)+1:]
break
}
}
if len(text) >= 4 && text[0:2] == "[#" && strings.Contains("ABC", text[2:3]) && text[3] == ']' {
headline.Priority = text[2:3]
text = strings.TrimSpace(text[4:])
}
if m := tagRegexp.FindStringSubmatch(text); m != nil {
text = m[1]
headline.Tags = strings.FieldsFunc(m[2], func(r rune) bool { return r == ':' })
}
headline.Title = d.parseInline(text)
stop := func(d *Document, i int) bool {
return parentStop(d, i) || d.tokens[i].kind == "headline" && d.tokens[i].lvl <= headline.Lvl
}
consumed, nodes := d.parseMany(i+1, stop)
if len(nodes) > 0 {
if d, ok := nodes[0].(PropertyDrawer); ok {
headline.Properties = &d
nodes = nodes[1:]
}
}
headline.Children = nodes
return consumed + 1, headline
}
func (h Headline) ID() string {
if customID, ok := h.Properties.Get("CUSTOM_ID"); ok {
return customID
}
return fmt.Sprintf("headline-%d", h.Index)
}
func (parent *Section) add(current *Section) {
if parent.Headline == nil || parent.Headline.Lvl < current.Headline.Lvl {
parent.Children = append(parent.Children, current)
current.Parent = parent
} else {
parent.Parent.add(current)
}
}
func (n Headline) String() string { return orgWriter.nodesAsString(n) }

437
vendor/github.com/niklasfasching/go-org/org/html_entity.go generated vendored Normal file
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@ -0,0 +1,437 @@
package org
import "strings"
var htmlEntityReplacer *strings.Replacer
func init() {
htmlEntities = append(htmlEntities,
"---", "—",
"--", "–",
"...", "…",
)
htmlEntityReplacer = strings.NewReplacer(htmlEntities...)
}
/*
Generated & copied over using the following elisp
(Setting up go generate seems like a waste for now - I call YAGNI on that one)
(insert (mapconcat
(lambda (entity) (concat "`\\" (car entity) "`, `" (nth 6 entity) "`")) ; entity -> utf8
(remove-if-not 'listp org-entities)
",\n"))
*/
var htmlEntities = []string{
`\Agrave`, `À`,
`\agrave`, `à`,
`\Aacute`, `Á`,
`\aacute`, `á`,
`\Acirc`, `Â`,
`\acirc`, `â`,
`\Amacr`, `Ã`,
`\amacr`, `ã`,
`\Atilde`, `Ã`,
`\atilde`, `ã`,
`\Auml`, `Ä`,
`\auml`, `ä`,
`\Aring`, `Å`,
`\AA`, `Å`,
`\aring`, `å`,
`\AElig`, `Æ`,
`\aelig`, `æ`,
`\Ccedil`, `Ç`,
`\ccedil`, `ç`,
`\Egrave`, `È`,
`\egrave`, `è`,
`\Eacute`, `É`,
`\eacute`, `é`,
`\Ecirc`, `Ê`,
`\ecirc`, `ê`,
`\Euml`, `Ë`,
`\euml`, `ë`,
`\Igrave`, `Ì`,
`\igrave`, `ì`,
`\Iacute`, `Í`,
`\iacute`, `í`,
`\Icirc`, `Î`,
`\icirc`, `î`,
`\Iuml`, `Ï`,
`\iuml`, `ï`,
`\Ntilde`, `Ñ`,
`\ntilde`, `ñ`,
`\Ograve`, `Ò`,
`\ograve`, `ò`,
`\Oacute`, `Ó`,
`\oacute`, `ó`,
`\Ocirc`, `Ô`,
`\ocirc`, `ô`,
`\Otilde`, `Õ`,
`\otilde`, `õ`,
`\Ouml`, `Ö`,
`\ouml`, `ö`,
`\Oslash`, `Ø`,
`\oslash`, `ø`,
`\OElig`, `Œ`,
`\oelig`, `œ`,
`\Scaron`, `Š`,
`\scaron`, `š`,
`\szlig`, `ß`,
`\Ugrave`, `Ù`,
`\ugrave`, `ù`,
`\Uacute`, `Ú`,
`\uacute`, `ú`,
`\Ucirc`, `Û`,
`\ucirc`, `û`,
`\Uuml`, `Ü`,
`\uuml`, `ü`,
`\Yacute`, `Ý`,
`\yacute`, `ý`,
`\Yuml`, `Ÿ`,
`\yuml`, `ÿ`,
`\fnof`, `ƒ`,
`\real`, `ℜ`,
`\image`, `ℑ`,
`\weierp`, `℘`,
`\ell`, `ℓ`,
`\imath`, `ı`,
`\jmath`, `ȷ`,
`\Alpha`, `Α`,
`\alpha`, `α`,
`\Beta`, `Β`,
`\beta`, `β`,
`\Gamma`, `Γ`,
`\gamma`, `γ`,
`\Delta`, `Δ`,
`\delta`, `δ`,
`\Epsilon`, `Ε`,
`\epsilon`, `ε`,
`\varepsilon`, `ε`,
`\Zeta`, `Ζ`,
`\zeta`, `ζ`,
`\Eta`, `Η`,
`\eta`, `η`,
`\Theta`, `Θ`,
`\theta`, `θ`,
`\thetasym`, `ϑ`,
`\vartheta`, `ϑ`,
`\Iota`, `Ι`,
`\iota`, `ι`,
`\Kappa`, `Κ`,
`\kappa`, `κ`,
`\Lambda`, `Λ`,
`\lambda`, `λ`,
`\Mu`, `Μ`,
`\mu`, `μ`,
`\nu`, `ν`,
`\Nu`, `Ν`,
`\Xi`, `Ξ`,
`\xi`, `ξ`,
`\Omicron`, `Ο`,
`\omicron`, `ο`,
`\Pi`, `Π`,
`\pi`, `π`,
`\Rho`, `Ρ`,
`\rho`, `ρ`,
`\Sigma`, `Σ`,
`\sigma`, `σ`,
`\sigmaf`, `ς`,
`\varsigma`, `ς`,
`\Tau`, `Τ`,
`\Upsilon`, `Υ`,
`\upsih`, `ϒ`,
`\upsilon`, `υ`,
`\Phi`, `Φ`,
`\phi`, `ɸ`,
`\varphi`, `φ`,
`\Chi`, `Χ`,
`\chi`, `χ`,
`\acutex`, `𝑥́`,
`\Psi`, `Ψ`,
`\psi`, `ψ`,
`\tau`, `τ`,
`\Omega`, `Ω`,
`\omega`, `ω`,
`\piv`, `ϖ`,
`\varpi`, `ϖ`,
`\partial`, `∂`,
`\alefsym`, `ℵ`,
`\aleph`, `ℵ`,
`\gimel`, `ℷ`,
`\beth`, `ב`,
`\dalet`, `ד`,
`\ETH`, `Ð`,
`\eth`, `ð`,
`\THORN`, `Þ`,
`\thorn`, `þ`,
`\dots`, `…`,
`\cdots`, `⋯`,
`\hellip`, `…`,
`\middot`, `·`,
`\iexcl`, `¡`,
`\iquest`, `¿`,
`\shy`, ``,
`\ndash`, `–`,
`\mdash`, `—`,
`\quot`, `"`,
`\acute`, `´`,
`\ldquo`, `“`,
`\rdquo`, `”`,
`\bdquo`, `„`,
`\lsquo`, `‘`,
`\rsquo`, `’`,
`\sbquo`, `‚`,
`\laquo`, `«`,
`\raquo`, `»`,
`\lsaquo`, `‹`,
`\rsaquo`, `›`,
`\circ`, `∘`,
`\vert`, `|`,
`\vbar`, `|`,
`\brvbar`, `¦`,
`\S`, `§`,
`\sect`, `§`,
`\amp`, `&`,
`\lt`, `<`,
`\gt`, `>`,
`\tilde`, `~`,
`\slash`, `/`,
`\plus`, `+`,
`\under`, `_`,
`\equal`, `=`,
`\asciicirc`, `^`,
`\dagger`, `†`,
`\dag`, `†`,
`\Dagger`, `‡`,
`\ddag`, `‡`,
`\nbsp`, ` `,
`\ensp`, ` `,
`\emsp`, ` `,
`\thinsp`, ` `,
`\curren`, `¤`,
`\cent`, `¢`,
`\pound`, `£`,
`\yen`, `¥`,
`\euro`, `€`,
`\EUR`, `€`,
`\dollar`, `$`,
`\USD`, `$`,
`\copy`, `©`,
`\reg`, `®`,
`\trade`, `™`,
`\minus`, `−`,
`\pm`, `±`,
`\plusmn`, `±`,
`\times`, `×`,
`\frasl`, `⁄`,
`\colon`, `:`,
`\div`, `÷`,
`\frac12`, `½`,
`\frac14`, `¼`,
`\frac34`, `¾`,
`\permil`, `‰`,
`\sup1`, `¹`,
`\sup2`, `²`,
`\sup3`, `³`,
`\radic`, `√`,
`\sum`, `∑`,
`\prod`, `∏`,
`\micro`, `µ`,
`\macr`, `¯`,
`\deg`, `°`,
`\prime`, `′`,
`\Prime`, `″`,
`\infin`, `∞`,
`\infty`, `∞`,
`\prop`, `∝`,
`\propto`, `∝`,
`\not`, `¬`,
`\neg`, `¬`,
`\land`, `∧`,
`\wedge`, `∧`,
`\lor`, `∨`,
`\vee`, `∨`,
`\cap`, `∩`,
`\cup`, `∪`,
`\smile`, `⌣`,
`\frown`, `⌢`,
`\int`, `∫`,
`\therefore`, `∴`,
`\there4`, `∴`,
`\because`, `∵`,
`\sim`, `∼`,
`\cong`, `≅`,
`\simeq`, `≅`,
`\asymp`, `≈`,
`\approx`, `≈`,
`\ne`, `≠`,
`\neq`, `≠`,
`\equiv`, `≡`,
`\triangleq`, `≜`,
`\le`, `≤`,
`\leq`, `≤`,
`\ge`, `≥`,
`\geq`, `≥`,
`\lessgtr`, `≶`,
`\lesseqgtr`, `⋚`,
`\ll`, `≪`,
`\Ll`, `⋘`,
`\lll`, `⋘`,
`\gg`, `≫`,
`\Gg`, `⋙`,
`\ggg`, `⋙`,
`\prec`, `≺`,
`\preceq`, `≼`,
`\preccurlyeq`, `≼`,
`\succ`, `≻`,
`\succeq`, `≽`,
`\succcurlyeq`, `≽`,
`\sub`, `⊂`,
`\subset`, `⊂`,
`\sup`, `⊃`,
`\supset`, `⊃`,
`\nsub`, `⊄`,
`\sube`, `⊆`,
`\nsup`, `⊅`,
`\supe`, `⊇`,
`\setminus`, `⧵`,
`\forall`, `∀`,
`\exist`, `∃`,
`\exists`, `∃`,
`\nexist`, `∄`,
`\nexists`, `∄`,
`\empty`, `∅`,
`\emptyset`, `∅`,
`\isin`, `∈`,
`\in`, `∈`,
`\notin`, `∉`,
`\ni`, `∋`,
`\nabla`, `∇`,
`\ang`, `∠`,
`\angle`, `∠`,
`\perp`, `⊥`,
`\parallel`, `∥`,
`\sdot`, `⋅`,
`\cdot`, `⋅`,
`\lceil`, `⌈`,
`\rceil`, `⌉`,
`\lfloor`, `⌊`,
`\rfloor`, `⌋`,
`\lang`, `⟨`,
`\rang`, `⟩`,
`\langle`, `⟨`,
`\rangle`, `⟩`,
`\hbar`, `ℏ`,
`\mho`, `℧`,
`\larr`, `←`,
`\leftarrow`, `←`,
`\gets`, `←`,
`\lArr`, `⇐`,
`\Leftarrow`, `⇐`,
`\uarr`, `↑`,
`\uparrow`, `↑`,
`\uArr`, `⇑`,
`\Uparrow`, `⇑`,
`\rarr`, `→`,
`\to`, `→`,
`\rightarrow`, `→`,
`\rArr`, `⇒`,
`\Rightarrow`, `⇒`,
`\darr`, `↓`,
`\downarrow`, `↓`,
`\dArr`, `⇓`,
`\Downarrow`, `⇓`,
`\harr`, `↔`,
`\leftrightarrow`, `↔`,
`\hArr`, `⇔`,
`\Leftrightarrow`, `⇔`,
`\crarr`, `↵`,
`\hookleftarrow`, `↵`,
`\arccos`, `arccos`,
`\arcsin`, `arcsin`,
`\arctan`, `arctan`,
`\arg`, `arg`,
`\cos`, `cos`,
`\cosh`, `cosh`,
`\cot`, `cot`,
`\coth`, `coth`,
`\csc`, `csc`,
`\deg`, `deg`,
`\det`, `det`,
`\dim`, `dim`,
`\exp`, `exp`,
`\gcd`, `gcd`,
`\hom`, `hom`,
`\inf`, `inf`,
`\ker`, `ker`,
`\lg`, `lg`,
`\lim`, `lim`,
`\liminf`, `liminf`,
`\limsup`, `limsup`,
`\ln`, `ln`,
`\log`, `log`,
`\max`, `max`,
`\min`, `min`,
`\Pr`, `Pr`,
`\sec`, `sec`,
`\sin`, `sin`,
`\sinh`, `sinh`,
`\sup`, `sup`,
`\tan`, `tan`,
`\tanh`, `tanh`,
`\bull`, `•`,
`\bullet`, `•`,
`\star`, `⋆`,
`\lowast`, `∗`,
`\ast`, `*`,
`\odot`, `ʘ`,
`\oplus`, `⊕`,
`\otimes`, `⊗`,
`\check`, `✓`,
`\checkmark`, `✓`,
`\para`, ``,
`\ordf`, `ª`,
`\ordm`, `º`,
`\cedil`, `¸`,
`\oline`, `‾`,
`\uml`, `¨`,
`\zwnj`, `‌`,
`\zwj`, `‍`,
`\lrm`, `‎`,
`\rlm`, `‏`,
`\smiley`, `☺`,
`\blacksmile`, `☻`,
`\sad`, `☹`,
`\frowny`, `☹`,
`\clubs`, `♣`,
`\clubsuit`, `♣`,
`\spades`, `♠`,
`\spadesuit`, `♠`,
`\hearts`, `♥`,
`\heartsuit`, `♥`,
`\diams`, `◆`,
`\diamondsuit`, `◆`,
`\diamond`, `◆`,
`\Diamond`, `◆`,
`\loz`, `⧫`,
`\_ `, ` `,
`\_ `, `  `,
`\_ `, `   `,
`\_ `, `    `,
`\_ `, `     `,
`\_ `, `      `,
`\_ `, `       `,
`\_ `, `        `,
`\_ `, `         `,
`\_ `, `          `,
`\_ `, `           `,
`\_ `, `            `,
`\_ `, `             `,
`\_ `, `              `,
`\_ `, `               `,
`\_ `, `                `,
`\_ `, `                 `,
`\_ `, `                  `,
`\_ `, `                   `,
`\_ `, `                    `,
}

504
vendor/github.com/niklasfasching/go-org/org/html_writer.go generated vendored Normal file
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@ -0,0 +1,504 @@
package org
import (
"fmt"
"html"
"log"
"regexp"
"strings"
"unicode"
h "golang.org/x/net/html"
"golang.org/x/net/html/atom"
)
// HTMLWriter exports an org document into a html document.
type HTMLWriter struct {
ExtendingWriter Writer
HighlightCodeBlock func(source, lang string) string
strings.Builder
document *Document
htmlEscape bool
log *log.Logger
footnotes *footnotes
}
type footnotes struct {
mapping map[string]int
list []*FootnoteDefinition
}
var emphasisTags = map[string][]string{
"/": []string{"<em>", "</em>"},
"*": []string{"<strong>", "</strong>"},
"+": []string{"<del>", "</del>"},
"~": []string{"<code>", "</code>"},
"=": []string{`<code class="verbatim">`, "</code>"},
"_": []string{`<span style="text-decoration: underline;">`, "</span>"},
"_{}": []string{"<sub>", "</sub>"},
"^{}": []string{"<sup>", "</sup>"},
}
var listTags = map[string][]string{
"unordered": []string{"<ul>", "</ul>"},
"ordered": []string{"<ol>", "</ol>"},
"descriptive": []string{"<dl>", "</dl>"},
}
var listItemStatuses = map[string]string{
" ": "unchecked",
"-": "indeterminate",
"X": "checked",
}
var cleanHeadlineTitleForHTMLAnchorRegexp = regexp.MustCompile(`</?a[^>]*>`) // nested a tags are not valid HTML
func NewHTMLWriter() *HTMLWriter {
defaultConfig := New()
return &HTMLWriter{
document: &Document{Configuration: defaultConfig},
log: defaultConfig.Log,
htmlEscape: true,
HighlightCodeBlock: func(source, lang string) string {
return fmt.Sprintf("<div class=\"highlight\">\n<pre>\n%s\n</pre>\n</div>", html.EscapeString(source))
},
footnotes: &footnotes{
mapping: map[string]int{},
},
}
}
func (w *HTMLWriter) emptyClone() *HTMLWriter {
wcopy := *w
wcopy.Builder = strings.Builder{}
return &wcopy
}
func (w *HTMLWriter) nodesAsString(nodes ...Node) string {
tmp := w.emptyClone()
WriteNodes(tmp, nodes...)
return tmp.String()
}
func (w *HTMLWriter) WriterWithExtensions() Writer {
if w.ExtendingWriter != nil {
return w.ExtendingWriter
}
return w
}
func (w *HTMLWriter) Before(d *Document) {
w.document = d
w.log = d.Log
w.WriteOutline(d)
}
func (w *HTMLWriter) After(d *Document) {
w.WriteFootnotes(d)
}
func (w *HTMLWriter) WriteComment(Comment) {}
func (w *HTMLWriter) WritePropertyDrawer(PropertyDrawer) {}
func (w *HTMLWriter) WriteBlock(b Block) {
content := ""
if isRawTextBlock(b.Name) {
exportWriter := w.emptyClone()
exportWriter.htmlEscape = false
WriteNodes(exportWriter, b.Children...)
content = strings.TrimRightFunc(exportWriter.String(), unicode.IsSpace)
} else {
content = w.nodesAsString(b.Children...)
}
switch name := b.Name; {
case name == "SRC":
lang := "text"
if len(b.Parameters) >= 1 {
lang = strings.ToLower(b.Parameters[0])
}
content = w.HighlightCodeBlock(content, lang)
w.WriteString(fmt.Sprintf("<div class=\"src src-%s\">\n%s\n</div>\n", lang, content))
case name == "EXAMPLE":
w.WriteString(`<pre class="example">` + "\n" + content + "\n</pre>\n")
case name == "EXPORT" && len(b.Parameters) >= 1 && strings.ToLower(b.Parameters[0]) == "html":
w.WriteString(content + "\n")
case name == "QUOTE":
w.WriteString("<blockquote>\n" + content + "</blockquote>\n")
case name == "CENTER":
w.WriteString(`<div class="center-block" style="text-align: center; margin-left: auto; margin-right: auto;">` + "\n")
w.WriteString(content + "</div>\n")
default:
w.WriteString(fmt.Sprintf(`<div class="%s-block">`, strings.ToLower(b.Name)) + "\n")
w.WriteString(content + "</div>\n")
}
}
func (w *HTMLWriter) WriteDrawer(d Drawer) {
WriteNodes(w, d.Children...)
}
func (w *HTMLWriter) WriteKeyword(k Keyword) {
if k.Key == "HTML" {
w.WriteString(k.Value + "\n")
}
}
func (w *HTMLWriter) WriteInclude(i Include) {
WriteNodes(w, i.Resolve())
}
func (w *HTMLWriter) WriteFootnoteDefinition(f FootnoteDefinition) {
w.footnotes.updateDefinition(f)
}
func (w *HTMLWriter) WriteFootnotes(d *Document) {
if !w.document.GetOption("f") || len(w.footnotes.list) == 0 {
return
}
w.WriteString(`<div class="footnotes">` + "\n")
w.WriteString(`<hr class="footnotes-separatator">` + "\n")
w.WriteString(`<div class="footnote-definitions">` + "\n")
for i, definition := range w.footnotes.list {
id := i + 1
if definition == nil {
name := ""
for k, v := range w.footnotes.mapping {
if v == i {
name = k
}
}
w.log.Printf("Missing footnote definition for [fn:%s] (#%d)", name, id)
continue
}
w.WriteString(`<div class="footnote-definition">` + "\n")
w.WriteString(fmt.Sprintf(`<sup id="footnote-%d"><a href="#footnote-reference-%d">%d</a></sup>`, id, id, id) + "\n")
w.WriteString(`<div class="footnote-body">` + "\n")
WriteNodes(w, definition.Children...)
w.WriteString("</div>\n</div>\n")
}
w.WriteString("</div>\n</div>\n")
}
func (w *HTMLWriter) WriteOutline(d *Document) {
if w.document.GetOption("toc") && len(d.Outline.Children) != 0 {
w.WriteString("<nav>\n<ul>\n")
for _, section := range d.Outline.Children {
w.writeSection(section)
}
w.WriteString("</ul>\n</nav>\n")
}
}
func (w *HTMLWriter) writeSection(section *Section) {
// NOTE: To satisfy hugo ExtractTOC() check we cannot use `<li>\n` here. Doesn't really matter, just a note.
w.WriteString("<li>")
h := section.Headline
title := cleanHeadlineTitleForHTMLAnchorRegexp.ReplaceAllString(w.nodesAsString(h.Title...), "")
w.WriteString(fmt.Sprintf("<a href=\"#%s\">%s</a>\n", h.ID(), title))
if len(section.Children) != 0 {
w.WriteString("<ul>\n")
for _, section := range section.Children {
w.writeSection(section)
}
w.WriteString("</ul>\n")
}
w.WriteString("</li>\n")
}
func (w *HTMLWriter) WriteHeadline(h Headline) {
for _, excludeTag := range strings.Fields(w.document.Get("EXCLUDE_TAGS")) {
for _, tag := range h.Tags {
if excludeTag == tag {
return
}
}
}
w.WriteString(fmt.Sprintf(`<h%d id="%s">`, h.Lvl, h.ID()) + "\n")
if w.document.GetOption("todo") && h.Status != "" {
w.WriteString(fmt.Sprintf(`<span class="todo">%s</span>`, h.Status) + "\n")
}
if w.document.GetOption("pri") && h.Priority != "" {
w.WriteString(fmt.Sprintf(`<span class="priority">[%s]</span>`, h.Priority) + "\n")
}
WriteNodes(w, h.Title...)
if w.document.GetOption("tags") && len(h.Tags) != 0 {
tags := make([]string, len(h.Tags))
for i, tag := range h.Tags {
tags[i] = fmt.Sprintf(`<span>%s</span>`, tag)
}
w.WriteString("&#xa0;&#xa0;&#xa0;")
w.WriteString(fmt.Sprintf(`<span class="tags">%s</span>`, strings.Join(tags, "&#xa0;")))
}
w.WriteString(fmt.Sprintf("\n</h%d>\n", h.Lvl))
WriteNodes(w, h.Children...)
}
func (w *HTMLWriter) WriteText(t Text) {
if !w.htmlEscape {
w.WriteString(t.Content)
} else if !w.document.GetOption("e") || t.IsRaw {
w.WriteString(html.EscapeString(t.Content))
} else {
w.WriteString(html.EscapeString(htmlEntityReplacer.Replace(t.Content)))
}
}
func (w *HTMLWriter) WriteEmphasis(e Emphasis) {
tags, ok := emphasisTags[e.Kind]
if !ok {
panic(fmt.Sprintf("bad emphasis %#v", e))
}
w.WriteString(tags[0])
WriteNodes(w, e.Content...)
w.WriteString(tags[1])
}
func (w *HTMLWriter) WriteLatexFragment(l LatexFragment) {
w.WriteString(l.OpeningPair)
WriteNodes(w, l.Content...)
w.WriteString(l.ClosingPair)
}
func (w *HTMLWriter) WriteStatisticToken(s StatisticToken) {
w.WriteString(fmt.Sprintf(`<code class="statistic">[%s]</code>`, s.Content))
}
func (w *HTMLWriter) WriteLineBreak(l LineBreak) {
w.WriteString(strings.Repeat("\n", l.Count))
}
func (w *HTMLWriter) WriteExplicitLineBreak(l ExplicitLineBreak) {
w.WriteString("<br>\n")
}
func (w *HTMLWriter) WriteFootnoteLink(l FootnoteLink) {
if !w.document.GetOption("f") {
return
}
i := w.footnotes.add(l)
id := i + 1
w.WriteString(fmt.Sprintf(`<sup class="footnote-reference"><a id="footnote-reference-%d" href="#footnote-%d">%d</a></sup>`, id, id, id))
}
func (w *HTMLWriter) WriteTimestamp(t Timestamp) {
if !w.document.GetOption("<") {
return
}
w.WriteString(`<span class="timestamp">&lt;`)
if t.IsDate {
w.WriteString(t.Time.Format(datestampFormat))
} else {
w.WriteString(t.Time.Format(timestampFormat))
}
if t.Interval != "" {
w.WriteString(" " + t.Interval)
}
w.WriteString(`&gt;</span>`)
}
func (w *HTMLWriter) WriteRegularLink(l RegularLink) {
url := html.EscapeString(l.URL)
if l.Protocol == "file" {
url = url[len("file:"):]
}
description := url
if l.Description != nil {
description = w.nodesAsString(l.Description...)
}
switch l.Kind() {
case "image":
w.WriteString(fmt.Sprintf(`<img src="%s" alt="%s" title="%s" />`, url, description, description))
case "video":
w.WriteString(fmt.Sprintf(`<video src="%s" title="%s">%s</video>`, url, description, description))
default:
w.WriteString(fmt.Sprintf(`<a href="%s">%s</a>`, url, description))
}
}
func (w *HTMLWriter) WriteList(l List) {
tags, ok := listTags[l.Kind]
if !ok {
panic(fmt.Sprintf("bad list kind %#v", l))
}
w.WriteString(tags[0] + "\n")
WriteNodes(w, l.Items...)
w.WriteString(tags[1] + "\n")
}
func (w *HTMLWriter) WriteListItem(li ListItem) {
if li.Status != "" {
w.WriteString(fmt.Sprintf("<li class=\"%s\">\n", listItemStatuses[li.Status]))
} else {
w.WriteString("<li>\n")
}
WriteNodes(w, li.Children...)
w.WriteString("</li>\n")
}
func (w *HTMLWriter) WriteDescriptiveListItem(di DescriptiveListItem) {
if di.Status != "" {
w.WriteString(fmt.Sprintf("<dt class=\"%s\">\n", listItemStatuses[di.Status]))
} else {
w.WriteString("<dt>\n")
}
if len(di.Term) != 0 {
WriteNodes(w, di.Term...)
} else {
w.WriteString("?")
}
w.WriteString("\n</dt>\n")
w.WriteString("<dd>\n")
WriteNodes(w, di.Details...)
w.WriteString("</dd>\n")
}
func (w *HTMLWriter) WriteParagraph(p Paragraph) {
if len(p.Children) == 0 {
return
}
w.WriteString("<p>")
if _, ok := p.Children[0].(LineBreak); !ok {
w.WriteString("\n")
}
WriteNodes(w, p.Children...)
w.WriteString("\n</p>\n")
}
func (w *HTMLWriter) WriteExample(e Example) {
w.WriteString(`<pre class="example">` + "\n")
if len(e.Children) != 0 {
for _, n := range e.Children {
WriteNodes(w, n)
w.WriteString("\n")
}
}
w.WriteString("</pre>\n")
}
func (w *HTMLWriter) WriteHorizontalRule(h HorizontalRule) {
w.WriteString("<hr>\n")
}
func (w *HTMLWriter) WriteNodeWithMeta(n NodeWithMeta) {
out := w.nodesAsString(n.Node)
if p, ok := n.Node.(Paragraph); ok {
if len(p.Children) == 1 && isImageOrVideoLink(p.Children[0]) {
out = w.nodesAsString(p.Children[0])
}
}
for _, attributes := range n.Meta.HTMLAttributes {
out = w.withHTMLAttributes(out, attributes...) + "\n"
}
if len(n.Meta.Caption) != 0 {
caption := ""
for i, ns := range n.Meta.Caption {
if i != 0 {
caption += " "
}
caption += w.nodesAsString(ns...)
}
out = fmt.Sprintf("<figure>\n%s<figcaption>\n%s\n</figcaption>\n</figure>\n", out, caption)
}
w.WriteString(out)
}
func (w *HTMLWriter) WriteNodeWithName(n NodeWithName) {
WriteNodes(w, n.Node)
}
func (w *HTMLWriter) WriteTable(t Table) {
w.WriteString("<table>\n")
beforeFirstContentRow := true
for i, row := range t.Rows {
if row.IsSpecial || len(row.Columns) == 0 {
continue
}
if beforeFirstContentRow {
beforeFirstContentRow = false
if i+1 < len(t.Rows) && len(t.Rows[i+1].Columns) == 0 {
w.WriteString("<thead>\n")
w.writeTableColumns(row.Columns, "th")
w.WriteString("</thead>\n<tbody>\n")
continue
} else {
w.WriteString("<tbody>\n")
}
}
w.writeTableColumns(row.Columns, "td")
}
w.WriteString("</tbody>\n</table>\n")
}
func (w *HTMLWriter) writeTableColumns(columns []Column, tag string) {
w.WriteString("<tr>\n")
for _, column := range columns {
if column.Align == "" {
w.WriteString(fmt.Sprintf("<%s>", tag))
} else {
w.WriteString(fmt.Sprintf(`<%s class="align-%s">`, tag, column.Align))
}
WriteNodes(w, column.Children...)
w.WriteString(fmt.Sprintf("</%s>\n", tag))
}
w.WriteString("</tr>\n")
}
func (w *HTMLWriter) withHTMLAttributes(input string, kvs ...string) string {
if len(kvs)%2 != 0 {
w.log.Printf("withHTMLAttributes: Len of kvs must be even: %#v", kvs)
return input
}
context := &h.Node{Type: h.ElementNode, Data: "body", DataAtom: atom.Body}
nodes, err := h.ParseFragment(strings.NewReader(strings.TrimSpace(input)), context)
if err != nil || len(nodes) != 1 {
w.log.Printf("withHTMLAttributes: Could not extend attributes of %s: %v (%s)", input, nodes, err)
return input
}
out, node := strings.Builder{}, nodes[0]
for i := 0; i < len(kvs)-1; i += 2 {
node.Attr = setHTMLAttribute(node.Attr, strings.TrimPrefix(kvs[i], ":"), kvs[i+1])
}
err = h.Render(&out, nodes[0])
if err != nil {
w.log.Printf("withHTMLAttributes: Could not extend attributes of %s: %v (%s)", input, node, err)
return input
}
return out.String()
}
func setHTMLAttribute(attributes []h.Attribute, k, v string) []h.Attribute {
for i, a := range attributes {
if strings.ToLower(a.Key) == strings.ToLower(k) {
switch strings.ToLower(k) {
case "class", "style":
attributes[i].Val += " " + v
default:
attributes[i].Val = v
}
return attributes
}
}
return append(attributes, h.Attribute{Namespace: "", Key: k, Val: v})
}
func (fs *footnotes) add(f FootnoteLink) int {
if i, ok := fs.mapping[f.Name]; ok && f.Name != "" {
return i
}
fs.list = append(fs.list, f.Definition)
i := len(fs.list) - 1
if f.Name != "" {
fs.mapping[f.Name] = i
}
return i
}
func (fs *footnotes) updateDefinition(f FootnoteDefinition) {
if i, ok := fs.mapping[f.Name]; ok {
fs.list[i] = &f
}
}

357
vendor/github.com/niklasfasching/go-org/org/inline.go generated vendored Normal file
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@ -0,0 +1,357 @@
package org
import (
"fmt"
"path"
"regexp"
"strings"
"time"
"unicode"
)
type Text struct {
Content string
IsRaw bool
}
type LineBreak struct{ Count int }
type ExplicitLineBreak struct{}
type StatisticToken struct{ Content string }
type Timestamp struct {
Time time.Time
IsDate bool
Interval string
}
type Emphasis struct {
Kind string
Content []Node
}
type LatexFragment struct {
OpeningPair string
ClosingPair string
Content []Node
}
type FootnoteLink struct {
Name string
Definition *FootnoteDefinition
}
type RegularLink struct {
Protocol string
Description []Node
URL string
AutoLink bool
}
var validURLCharacters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~:/?#[]@!$&'()*+,;="
var autolinkProtocols = regexp.MustCompile(`^(https?|ftp|file)$`)
var imageExtensionRegexp = regexp.MustCompile(`^[.](png|gif|jpe?g|svg|tiff?)$`)
var videoExtensionRegexp = regexp.MustCompile(`^[.](webm|mp4)$`)
var subScriptSuperScriptRegexp = regexp.MustCompile(`^([_^]){([^{}]+?)}`)
var timestampRegexp = regexp.MustCompile(`^<(\d{4}-\d{2}-\d{2})( [A-Za-z]+)?( \d{2}:\d{2})?( \+\d+[dwmy])?>`)
var footnoteRegexp = regexp.MustCompile(`^\[fn:([\w-]*?)(:(.*?))?\]`)
var statisticsTokenRegexp = regexp.MustCompile(`^\[(\d+/\d+|\d+%)\]`)
var latexFragmentRegexp = regexp.MustCompile(`(?s)^\\begin{(\w+)}(.*)\\end{(\w+)}`)
var timestampFormat = "2006-01-02 Mon 15:04"
var datestampFormat = "2006-01-02 Mon"
var latexFragmentPairs = map[string]string{
`\(`: `\)`,
`\[`: `\]`,
`$$`: `$$`,
}
func (d *Document) parseInline(input string) (nodes []Node) {
previous, current := 0, 0
for current < len(input) {
rewind, consumed, node := 0, 0, (Node)(nil)
switch input[current] {
case '^':
consumed, node = d.parseSubOrSuperScript(input, current)
case '_':
consumed, node = d.parseSubScriptOrEmphasis(input, current)
case '*', '/', '+':
consumed, node = d.parseEmphasis(input, current, false)
case '=', '~':
consumed, node = d.parseEmphasis(input, current, true)
case '[':
consumed, node = d.parseOpeningBracket(input, current)
case '<':
consumed, node = d.parseTimestamp(input, current)
case '\\':
consumed, node = d.parseExplicitLineBreakOrLatexFragment(input, current)
case '$':
consumed, node = d.parseLatexFragment(input, current)
case '\n':
consumed, node = d.parseLineBreak(input, current)
case ':':
rewind, consumed, node = d.parseAutoLink(input, current)
current -= rewind
}
if consumed != 0 {
if current > previous {
nodes = append(nodes, Text{input[previous:current], false})
}
if node != nil {
nodes = append(nodes, node)
}
current += consumed
previous = current
} else {
current++
}
}
if previous < len(input) {
nodes = append(nodes, Text{input[previous:], false})
}
return nodes
}
func (d *Document) parseRawInline(input string) (nodes []Node) {
previous, current := 0, 0
for current < len(input) {
if input[current] == '\n' {
consumed, node := d.parseLineBreak(input, current)
if current > previous {
nodes = append(nodes, Text{input[previous:current], true})
}
nodes = append(nodes, node)
current += consumed
previous = current
} else {
current++
}
}
if previous < len(input) {
nodes = append(nodes, Text{input[previous:], true})
}
return nodes
}
func (d *Document) parseLineBreak(input string, start int) (int, Node) {
i := start
for ; i < len(input) && input[i] == '\n'; i++ {
}
return i - start, LineBreak{i - start}
}
func (d *Document) parseExplicitLineBreakOrLatexFragment(input string, start int) (int, Node) {
switch {
case start+2 >= len(input):
case input[start+1] == '\\' && start != 0 && input[start-1] != '\n':
for i := start + 2; unicode.IsSpace(rune(input[i])); i++ {
if i >= len(input) || input[i] == '\n' {
return i + 1 - start, ExplicitLineBreak{}
}
}
case input[start+1] == '(' || input[start+1] == '[':
return d.parseLatexFragment(input, start)
case strings.Index(input[start:], `\begin{`) == 0:
if m := latexFragmentRegexp.FindStringSubmatch(input[start:]); m != nil {
if open, content, close := m[1], m[2], m[3]; open == close {
openingPair, closingPair := `\begin{`+open+`}`, `\end{`+close+`}`
i := strings.Index(input[start:], closingPair)
return i + len(closingPair), LatexFragment{openingPair, closingPair, d.parseRawInline(content)}
}
}
}
return 0, nil
}
func (d *Document) parseLatexFragment(input string, start int) (int, Node) {
if start+2 >= len(input) {
return 0, nil
}
openingPair := input[start : start+2]
closingPair := latexFragmentPairs[openingPair]
if i := strings.Index(input[start+2:], closingPair); i != -1 {
content := d.parseRawInline(input[start+2 : start+2+i])
return i + 2 + 2, LatexFragment{openingPair, closingPair, content}
}
return 0, nil
}
func (d *Document) parseSubOrSuperScript(input string, start int) (int, Node) {
if m := subScriptSuperScriptRegexp.FindStringSubmatch(input[start:]); m != nil {
return len(m[2]) + 3, Emphasis{m[1] + "{}", []Node{Text{m[2], false}}}
}
return 0, nil
}
func (d *Document) parseSubScriptOrEmphasis(input string, start int) (int, Node) {
if consumed, node := d.parseSubOrSuperScript(input, start); consumed != 0 {
return consumed, node
}
return d.parseEmphasis(input, start, false)
}
func (d *Document) parseOpeningBracket(input string, start int) (int, Node) {
if len(input[start:]) >= 2 && input[start] == '[' && input[start+1] == '[' {
return d.parseRegularLink(input, start)
} else if footnoteRegexp.MatchString(input[start:]) {
return d.parseFootnoteReference(input, start)
} else if statisticsTokenRegexp.MatchString(input[start:]) {
return d.parseStatisticToken(input, start)
}
return 0, nil
}
func (d *Document) parseFootnoteReference(input string, start int) (int, Node) {
if m := footnoteRegexp.FindStringSubmatch(input[start:]); m != nil {
name, definition := m[1], m[3]
if name == "" && definition == "" {
return 0, nil
}
link := FootnoteLink{name, nil}
if definition != "" {
link.Definition = &FootnoteDefinition{name, []Node{Paragraph{d.parseInline(definition)}}, true}
}
return len(m[0]), link
}
return 0, nil
}
func (d *Document) parseStatisticToken(input string, start int) (int, Node) {
if m := statisticsTokenRegexp.FindStringSubmatch(input[start:]); m != nil {
return len(m[1]) + 2, StatisticToken{m[1]}
}
return 0, nil
}
func (d *Document) parseAutoLink(input string, start int) (int, int, Node) {
if !d.AutoLink || start == 0 || len(input[start:]) < 3 || input[start:start+3] != "://" {
return 0, 0, nil
}
protocolStart, protocol := start-1, ""
for ; protocolStart > 0; protocolStart-- {
if !unicode.IsLetter(rune(input[protocolStart])) {
protocolStart++
break
}
}
if m := autolinkProtocols.FindStringSubmatch(input[protocolStart:start]); m != nil {
protocol = m[1]
} else {
return 0, 0, nil
}
end := start
for ; end < len(input) && strings.ContainsRune(validURLCharacters, rune(input[end])); end++ {
}
path := input[start:end]
if path == "://" {
return 0, 0, nil
}
return len(protocol), len(path + protocol), RegularLink{protocol, nil, protocol + path, true}
}
func (d *Document) parseRegularLink(input string, start int) (int, Node) {
input = input[start:]
if len(input) < 3 || input[:2] != "[[" || input[2] == '[' {
return 0, nil
}
end := strings.Index(input, "]]")
if end == -1 {
return 0, nil
}
rawLinkParts := strings.Split(input[2:end], "][")
description, link := ([]Node)(nil), rawLinkParts[0]
if len(rawLinkParts) == 2 {
link, description = rawLinkParts[0], d.parseInline(rawLinkParts[1])
}
if strings.ContainsRune(link, '\n') {
return 0, nil
}
consumed := end + 2
protocol, linkParts := "", strings.SplitN(link, ":", 2)
if len(linkParts) == 2 {
protocol = linkParts[0]
}
return consumed, RegularLink{protocol, description, link, false}
}
func (d *Document) parseTimestamp(input string, start int) (int, Node) {
if m := timestampRegexp.FindStringSubmatch(input[start:]); m != nil {
ddmmyy, hhmm, interval, isDate := m[1], m[3], strings.TrimSpace(m[4]), false
if hhmm == "" {
hhmm, isDate = "00:00", true
}
t, err := time.Parse(timestampFormat, fmt.Sprintf("%s Mon %s", ddmmyy, hhmm))
if err != nil {
return 0, nil
}
timestamp := Timestamp{t, isDate, interval}
return len(m[0]), timestamp
}
return 0, nil
}
func (d *Document) parseEmphasis(input string, start int, isRaw bool) (int, Node) {
marker, i := input[start], start
if !hasValidPreAndBorderChars(input, i) {
return 0, nil
}
for i, consumedNewLines := i+1, 0; i < len(input) && consumedNewLines <= d.MaxEmphasisNewLines; i++ {
if input[i] == '\n' {
consumedNewLines++
}
if input[i] == marker && i != start+1 && hasValidPostAndBorderChars(input, i) {
if isRaw {
return i + 1 - start, Emphasis{input[start : start+1], d.parseRawInline(input[start+1 : i])}
}
return i + 1 - start, Emphasis{input[start : start+1], d.parseInline(input[start+1 : i])}
}
}
return 0, nil
}
// see org-emphasis-regexp-components (emacs elisp variable)
func hasValidPreAndBorderChars(input string, i int) bool {
return (i+1 >= len(input) || isValidBorderChar(rune(input[i+1]))) && (i == 0 || isValidPreChar(rune(input[i-1])))
}
func hasValidPostAndBorderChars(input string, i int) bool {
return (i == 0 || isValidBorderChar(rune(input[i-1]))) && (i+1 >= len(input) || isValidPostChar(rune(input[i+1])))
}
func isValidPreChar(r rune) bool {
return unicode.IsSpace(r) || strings.ContainsRune(`-({'"`, r)
}
func isValidPostChar(r rune) bool {
return unicode.IsSpace(r) || strings.ContainsRune(`-.,:!?;'")}[`, r)
}
func isValidBorderChar(r rune) bool { return !unicode.IsSpace(r) }
func (l RegularLink) Kind() string {
if p := l.Protocol; l.Description != nil || (p != "" && p != "file" && p != "http" && p != "https") {
return "regular"
}
if imageExtensionRegexp.MatchString(path.Ext(l.URL)) {
return "image"
}
if videoExtensionRegexp.MatchString(path.Ext(l.URL)) {
return "video"
}
return "regular"
}
func (n Text) String() string { return orgWriter.nodesAsString(n) }
func (n LineBreak) String() string { return orgWriter.nodesAsString(n) }
func (n ExplicitLineBreak) String() string { return orgWriter.nodesAsString(n) }
func (n StatisticToken) String() string { return orgWriter.nodesAsString(n) }
func (n Emphasis) String() string { return orgWriter.nodesAsString(n) }
func (n LatexFragment) String() string { return orgWriter.nodesAsString(n) }
func (n FootnoteLink) String() string { return orgWriter.nodesAsString(n) }
func (n RegularLink) String() string { return orgWriter.nodesAsString(n) }
func (n Timestamp) String() string { return orgWriter.nodesAsString(n) }

184
vendor/github.com/niklasfasching/go-org/org/keyword.go generated vendored Normal file
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package org
import (
"bytes"
"path/filepath"
"regexp"
"strings"
)
type Comment struct{ Content string }
type Keyword struct {
Key string
Value string
}
type NodeWithName struct {
Name string
Node Node
}
type NodeWithMeta struct {
Node Node
Meta Metadata
}
type Metadata struct {
Caption [][]Node
HTMLAttributes [][]string
}
type Include struct {
Keyword
Resolve func() Node
}
var keywordRegexp = regexp.MustCompile(`^(\s*)#\+([^:]+):(\s+(.*)|$)`)
var commentRegexp = regexp.MustCompile(`^(\s*)#(.*)`)
var includeFileRegexp = regexp.MustCompile(`(?i)^"([^"]+)" (src|example|export) (\w+)$`)
var attributeRegexp = regexp.MustCompile(`(?:^|\s+)(:[-\w]+)\s+(.*)$`)
func lexKeywordOrComment(line string) (token, bool) {
if m := keywordRegexp.FindStringSubmatch(line); m != nil {
return token{"keyword", len(m[1]), m[2], m}, true
} else if m := commentRegexp.FindStringSubmatch(line); m != nil {
return token{"comment", len(m[1]), m[2], m}, true
}
return nilToken, false
}
func (d *Document) parseComment(i int, stop stopFn) (int, Node) {
return 1, Comment{d.tokens[i].content}
}
func (d *Document) parseKeyword(i int, stop stopFn) (int, Node) {
k := parseKeyword(d.tokens[i])
switch k.Key {
case "NAME":
return d.parseNodeWithName(k, i, stop)
case "SETUPFILE":
return d.loadSetupFile(k)
case "INCLUDE":
return d.parseInclude(k)
case "CAPTION", "ATTR_HTML":
consumed, node := d.parseAffiliated(i, stop)
if consumed != 0 {
return consumed, node
}
fallthrough
default:
if _, ok := d.BufferSettings[k.Key]; ok {
d.BufferSettings[k.Key] = strings.Join([]string{d.BufferSettings[k.Key], k.Value}, "\n")
} else {
d.BufferSettings[k.Key] = k.Value
}
return 1, k
}
}
func (d *Document) parseNodeWithName(k Keyword, i int, stop stopFn) (int, Node) {
if stop(d, i+1) {
return 0, nil
}
consumed, node := d.parseOne(i+1, stop)
if consumed == 0 || node == nil {
return 0, nil
}
d.NamedNodes[k.Value] = node
return consumed + 1, NodeWithName{k.Value, node}
}
func (d *Document) parseAffiliated(i int, stop stopFn) (int, Node) {
start, meta := i, Metadata{}
for ; !stop(d, i) && d.tokens[i].kind == "keyword"; i++ {
switch k := parseKeyword(d.tokens[i]); k.Key {
case "CAPTION":
meta.Caption = append(meta.Caption, d.parseInline(k.Value))
case "ATTR_HTML":
attributes, rest := []string{}, k.Value
for {
if k, m := "", attributeRegexp.FindStringSubmatch(rest); m != nil {
k, rest = m[1], m[2]
attributes = append(attributes, k)
if v, m := "", attributeRegexp.FindStringSubmatchIndex(rest); m != nil {
v, rest = rest[:m[0]], rest[m[0]:]
attributes = append(attributes, v)
} else {
attributes = append(attributes, strings.TrimSpace(rest))
break
}
} else {
break
}
}
meta.HTMLAttributes = append(meta.HTMLAttributes, attributes)
default:
return 0, nil
}
}
if stop(d, i) {
return 0, nil
}
consumed, node := d.parseOne(i, stop)
if consumed == 0 || node == nil {
return 0, nil
}
i += consumed
return i - start, NodeWithMeta{node, meta}
}
func parseKeyword(t token) Keyword {
k, v := t.matches[2], t.matches[4]
return Keyword{strings.ToUpper(k), strings.TrimSpace(v)}
}
func (d *Document) parseInclude(k Keyword) (int, Node) {
resolve := func() Node {
d.Log.Printf("Bad include %#v", k)
return k
}
if m := includeFileRegexp.FindStringSubmatch(k.Value); m != nil {
path, kind, lang := m[1], m[2], m[3]
if !filepath.IsAbs(path) {
path = filepath.Join(filepath.Dir(d.Path), path)
}
resolve = func() Node {
bs, err := d.ReadFile(path)
if err != nil {
d.Log.Printf("Bad include %#v: %s", k, err)
return k
}
return Block{strings.ToUpper(kind), []string{lang}, d.parseRawInline(string(bs))}
}
}
return 1, Include{k, resolve}
}
func (d *Document) loadSetupFile(k Keyword) (int, Node) {
path := k.Value
if !filepath.IsAbs(path) {
path = filepath.Join(filepath.Dir(d.Path), path)
}
bs, err := d.ReadFile(path)
if err != nil {
d.Log.Printf("Bad setup file: %#v: %s", k, err)
return 1, k
}
setupDocument := d.Configuration.Parse(bytes.NewReader(bs), path)
if err := setupDocument.Error; err != nil {
d.Log.Printf("Bad setup file: %#v: %s", k, err)
return 1, k
}
for k, v := range setupDocument.BufferSettings {
d.BufferSettings[k] = v
}
return 1, k
}
func (n Comment) String() string { return orgWriter.nodesAsString(n) }
func (n Keyword) String() string { return orgWriter.nodesAsString(n) }
func (n NodeWithMeta) String() string { return orgWriter.nodesAsString(n) }
func (n NodeWithName) String() string { return orgWriter.nodesAsString(n) }
func (n Include) String() string { return orgWriter.nodesAsString(n) }

114
vendor/github.com/niklasfasching/go-org/org/list.go generated vendored Normal file
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package org
import (
"fmt"
"regexp"
"strings"
"unicode"
)
type List struct {
Kind string
Items []Node
}
type ListItem struct {
Bullet string
Status string
Children []Node
}
type DescriptiveListItem struct {
Bullet string
Status string
Term []Node
Details []Node
}
var unorderedListRegexp = regexp.MustCompile(`^(\s*)([+*-])(\s+(.*)|$)`)
var orderedListRegexp = regexp.MustCompile(`^(\s*)(([0-9]+|[a-zA-Z])[.)])(\s+(.*)|$)`)
var descriptiveListItemRegexp = regexp.MustCompile(`\s::(\s|$)`)
var listItemStatusRegexp = regexp.MustCompile(`\[( |X|-)\]\s`)
func lexList(line string) (token, bool) {
if m := unorderedListRegexp.FindStringSubmatch(line); m != nil {
return token{"unorderedList", len(m[1]), m[4], m}, true
} else if m := orderedListRegexp.FindStringSubmatch(line); m != nil {
return token{"orderedList", len(m[1]), m[5], m}, true
}
return nilToken, false
}
func isListToken(t token) bool {
return t.kind == "unorderedList" || t.kind == "orderedList"
}
func listKind(t token) (string, string) {
kind := ""
switch bullet := t.matches[2]; {
case bullet == "*" || bullet == "+" || bullet == "-":
kind = "unordered"
case unicode.IsLetter(rune(bullet[0])), unicode.IsDigit(rune(bullet[0])):
kind = "ordered"
default:
panic(fmt.Sprintf("bad list bullet '%s': %#v", bullet, t))
}
if descriptiveListItemRegexp.MatchString(t.content) {
return kind, "descriptive"
}
return kind, kind
}
func (d *Document) parseList(i int, parentStop stopFn) (int, Node) {
start, lvl := i, d.tokens[i].lvl
listMainKind, kind := listKind(d.tokens[i])
list := List{Kind: kind}
stop := func(*Document, int) bool {
if parentStop(d, i) || d.tokens[i].lvl != lvl || !isListToken(d.tokens[i]) {
return true
}
itemMainKind, _ := listKind(d.tokens[i])
return itemMainKind != listMainKind
}
for !stop(d, i) {
consumed, node := d.parseListItem(list, i, parentStop)
i += consumed
list.Items = append(list.Items, node)
}
return i - start, list
}
func (d *Document) parseListItem(l List, i int, parentStop stopFn) (int, Node) {
start, nodes, bullet := i, []Node{}, d.tokens[i].matches[2]
minIndent, dterm, content, status := d.tokens[i].lvl+len(bullet), "", d.tokens[i].content, ""
if m := listItemStatusRegexp.FindStringSubmatch(content); m != nil {
status, content = m[1], content[len("[ ] "):]
}
if l.Kind == "descriptive" {
if m := descriptiveListItemRegexp.FindStringIndex(content); m != nil {
dterm, content = content[:m[0]], content[m[1]:]
}
}
d.tokens[i] = tokenize(strings.Repeat(" ", minIndent) + content)
stop := func(d *Document, i int) bool {
if parentStop(d, i) {
return true
}
t := d.tokens[i]
return t.lvl < minIndent && !(t.kind == "text" && t.content == "")
}
for !stop(d, i) && (i <= start+1 || !isSecondBlankLine(d, i)) {
consumed, node := d.parseOne(i, stop)
i += consumed
nodes = append(nodes, node)
}
if l.Kind == "descriptive" {
return i - start, DescriptiveListItem{bullet, status, d.parseInline(dterm), nodes}
}
return i - start, ListItem{bullet, status, nodes}
}
func (n List) String() string { return orgWriter.nodesAsString(n) }
func (n ListItem) String() string { return orgWriter.nodesAsString(n) }
func (n DescriptiveListItem) String() string { return orgWriter.nodesAsString(n) }

334
vendor/github.com/niklasfasching/go-org/org/org_writer.go generated vendored Normal file
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package org
import (
"fmt"
"strings"
"unicode"
"unicode/utf8"
)
// OrgWriter export an org document into pretty printed org document.
type OrgWriter struct {
ExtendingWriter Writer
TagsColumn int
strings.Builder
indent string
}
var emphasisOrgBorders = map[string][]string{
"_": []string{"_", "_"},
"*": []string{"*", "*"},
"/": []string{"/", "/"},
"+": []string{"+", "+"},
"~": []string{"~", "~"},
"=": []string{"=", "="},
"_{}": []string{"_{", "}"},
"^{}": []string{"^{", "}"},
}
func NewOrgWriter() *OrgWriter {
return &OrgWriter{
TagsColumn: 77,
}
}
func (w *OrgWriter) WriterWithExtensions() Writer {
if w.ExtendingWriter != nil {
return w.ExtendingWriter
}
return w
}
func (w *OrgWriter) Before(d *Document) {}
func (w *OrgWriter) After(d *Document) {}
func (w *OrgWriter) emptyClone() *OrgWriter {
wcopy := *w
wcopy.Builder = strings.Builder{}
return &wcopy
}
func (w *OrgWriter) nodesAsString(nodes ...Node) string {
tmp := w.emptyClone()
WriteNodes(tmp, nodes...)
return tmp.String()
}
func (w *OrgWriter) WriteHeadline(h Headline) {
tmp := w.emptyClone()
tmp.WriteString(strings.Repeat("*", h.Lvl))
if h.Status != "" {
tmp.WriteString(" " + h.Status)
}
if h.Priority != "" {
tmp.WriteString(" [#" + h.Priority + "]")
}
tmp.WriteString(" ")
WriteNodes(tmp, h.Title...)
hString := tmp.String()
if len(h.Tags) != 0 {
tString := ":" + strings.Join(h.Tags, ":") + ":"
if n := w.TagsColumn - len(tString) - len(hString); n > 0 {
w.WriteString(hString + strings.Repeat(" ", n) + tString)
} else {
w.WriteString(hString + " " + tString)
}
} else {
w.WriteString(hString)
}
w.WriteString("\n")
if len(h.Children) != 0 {
w.WriteString(w.indent)
}
if h.Properties != nil {
WriteNodes(w, *h.Properties)
}
WriteNodes(w, h.Children...)
}
func (w *OrgWriter) WriteBlock(b Block) {
w.WriteString(w.indent + "#+BEGIN_" + b.Name)
if len(b.Parameters) != 0 {
w.WriteString(" " + strings.Join(b.Parameters, " "))
}
w.WriteString("\n")
if isRawTextBlock(b.Name) {
w.WriteString(w.indent)
}
WriteNodes(w, b.Children...)
if !isRawTextBlock(b.Name) {
w.WriteString(w.indent)
}
w.WriteString("#+END_" + b.Name + "\n")
}
func (w *OrgWriter) WriteDrawer(d Drawer) {
w.WriteString(w.indent + ":" + d.Name + ":\n")
WriteNodes(w, d.Children...)
w.WriteString(w.indent + ":END:\n")
}
func (w *OrgWriter) WritePropertyDrawer(d PropertyDrawer) {
w.WriteString(":PROPERTIES:\n")
for _, kvPair := range d.Properties {
k, v := kvPair[0], kvPair[1]
if v != "" {
v = " " + v
}
w.WriteString(fmt.Sprintf(":%s:%s\n", k, v))
}
w.WriteString(":END:\n")
}
func (w *OrgWriter) WriteFootnoteDefinition(f FootnoteDefinition) {
w.WriteString(fmt.Sprintf("[fn:%s]", f.Name))
content := w.nodesAsString(f.Children...)
if content != "" && !unicode.IsSpace(rune(content[0])) {
w.WriteString(" ")
}
w.WriteString(content)
}
func (w *OrgWriter) WriteParagraph(p Paragraph) {
content := w.nodesAsString(p.Children...)
if len(content) > 0 && content[0] != '\n' {
w.WriteString(w.indent)
}
w.WriteString(content + "\n")
}
func (w *OrgWriter) WriteExample(e Example) {
for _, n := range e.Children {
w.WriteString(w.indent + ":")
if content := w.nodesAsString(n); content != "" {
w.WriteString(" " + content)
}
w.WriteString("\n")
}
}
func (w *OrgWriter) WriteKeyword(k Keyword) {
w.WriteString(w.indent + "#+" + k.Key + ":")
if k.Value != "" {
w.WriteString(" " + k.Value)
}
w.WriteString("\n")
}
func (w *OrgWriter) WriteInclude(i Include) {
w.WriteKeyword(i.Keyword)
}
func (w *OrgWriter) WriteNodeWithMeta(n NodeWithMeta) {
for _, ns := range n.Meta.Caption {
w.WriteString("#+CAPTION: ")
WriteNodes(w, ns...)
w.WriteString("\n")
}
for _, attributes := range n.Meta.HTMLAttributes {
w.WriteString("#+ATTR_HTML: ")
w.WriteString(strings.Join(attributes, " ") + "\n")
}
WriteNodes(w, n.Node)
}
func (w *OrgWriter) WriteNodeWithName(n NodeWithName) {
w.WriteString(fmt.Sprintf("#+NAME: %s\n", n.Name))
WriteNodes(w, n.Node)
}
func (w *OrgWriter) WriteComment(c Comment) {
w.WriteString(w.indent + "#" + c.Content + "\n")
}
func (w *OrgWriter) WriteList(l List) { WriteNodes(w, l.Items...) }
func (w *OrgWriter) WriteListItem(li ListItem) {
liWriter := w.emptyClone()
liWriter.indent = w.indent + strings.Repeat(" ", len(li.Bullet)+1)
WriteNodes(liWriter, li.Children...)
content := strings.TrimPrefix(liWriter.String(), liWriter.indent)
w.WriteString(w.indent + li.Bullet)
if li.Status != "" {
w.WriteString(fmt.Sprintf(" [%s]", li.Status))
}
if len(content) > 0 && content[0] == '\n' {
w.WriteString(content)
} else {
w.WriteString(" " + content)
}
}
func (w *OrgWriter) WriteDescriptiveListItem(di DescriptiveListItem) {
w.WriteString(w.indent + di.Bullet)
if di.Status != "" {
w.WriteString(fmt.Sprintf(" [%s]", di.Status))
}
indent := w.indent + strings.Repeat(" ", len(di.Bullet)+1)
if len(di.Term) != 0 {
term := w.nodesAsString(di.Term...)
w.WriteString(" " + term + " ::")
indent = indent + strings.Repeat(" ", len(term)+4)
}
diWriter := w.emptyClone()
diWriter.indent = indent
WriteNodes(diWriter, di.Details...)
details := strings.TrimPrefix(diWriter.String(), diWriter.indent)
if len(details) > 0 && details[0] == '\n' {
w.WriteString(details)
} else {
w.WriteString(" " + details)
}
}
func (w *OrgWriter) WriteTable(t Table) {
for _, row := range t.Rows {
w.WriteString(w.indent)
if len(row.Columns) == 0 {
w.WriteString(`|`)
for i := 0; i < len(t.ColumnInfos); i++ {
w.WriteString(strings.Repeat("-", t.ColumnInfos[i].Len+2))
if i < len(t.ColumnInfos)-1 {
w.WriteString("+")
}
}
w.WriteString(`|`)
} else {
w.WriteString(`|`)
for _, column := range row.Columns {
w.WriteString(` `)
content := w.nodesAsString(column.Children...)
if content == "" {
content = " "
}
n := column.Len - utf8.RuneCountInString(content)
if n < 0 {
n = 0
}
if column.Align == "center" {
if n%2 != 0 {
w.WriteString(" ")
}
w.WriteString(strings.Repeat(" ", n/2) + content + strings.Repeat(" ", n/2))
} else if column.Align == "right" {
w.WriteString(strings.Repeat(" ", n) + content)
} else {
w.WriteString(content + strings.Repeat(" ", n))
}
w.WriteString(` |`)
}
}
w.WriteString("\n")
}
}
func (w *OrgWriter) WriteHorizontalRule(hr HorizontalRule) {
w.WriteString(w.indent + "-----\n")
}
func (w *OrgWriter) WriteText(t Text) { w.WriteString(t.Content) }
func (w *OrgWriter) WriteEmphasis(e Emphasis) {
borders, ok := emphasisOrgBorders[e.Kind]
if !ok {
panic(fmt.Sprintf("bad emphasis %#v", e))
}
w.WriteString(borders[0])
WriteNodes(w, e.Content...)
w.WriteString(borders[1])
}
func (w *OrgWriter) WriteLatexFragment(l LatexFragment) {
w.WriteString(l.OpeningPair)
WriteNodes(w, l.Content...)
w.WriteString(l.ClosingPair)
}
func (w *OrgWriter) WriteStatisticToken(s StatisticToken) {
w.WriteString(fmt.Sprintf("[%s]", s.Content))
}
func (w *OrgWriter) WriteLineBreak(l LineBreak) {
w.WriteString(strings.Repeat("\n"+w.indent, l.Count))
}
func (w *OrgWriter) WriteExplicitLineBreak(l ExplicitLineBreak) {
w.WriteString(`\\` + "\n" + w.indent)
}
func (w *OrgWriter) WriteTimestamp(t Timestamp) {
w.WriteString("<")
if t.IsDate {
w.WriteString(t.Time.Format(datestampFormat))
} else {
w.WriteString(t.Time.Format(timestampFormat))
}
if t.Interval != "" {
w.WriteString(" " + t.Interval)
}
w.WriteString(">")
}
func (w *OrgWriter) WriteFootnoteLink(l FootnoteLink) {
w.WriteString("[fn:" + l.Name)
if l.Definition != nil {
w.WriteString(":")
WriteNodes(w, l.Definition.Children[0].(Paragraph).Children...)
}
w.WriteString("]")
}
func (w *OrgWriter) WriteRegularLink(l RegularLink) {
if l.AutoLink {
w.WriteString(l.URL)
} else if l.Description == nil {
w.WriteString(fmt.Sprintf("[[%s]]", l.URL))
} else {
descriptionWriter := w.emptyClone()
WriteNodes(descriptionWriter, l.Description...)
description := descriptionWriter.String()
w.WriteString(fmt.Sprintf("[[%s][%s]]", l.URL, description))
}
}

46
vendor/github.com/niklasfasching/go-org/org/paragraph.go generated vendored Normal file
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package org
import (
"regexp"
"strings"
)
type Paragraph struct{ Children []Node }
type HorizontalRule struct{}
var horizontalRuleRegexp = regexp.MustCompile(`^(\s*)-{5,}\s*$`)
var plainTextRegexp = regexp.MustCompile(`^(\s*)(.*)`)
func lexText(line string) (token, bool) {
if m := plainTextRegexp.FindStringSubmatch(line); m != nil {
return token{"text", len(m[1]), m[2], m}, true
}
return nilToken, false
}
func lexHorizontalRule(line string) (token, bool) {
if m := horizontalRuleRegexp.FindStringSubmatch(line); m != nil {
return token{"horizontalRule", len(m[1]), "", m}, true
}
return nilToken, false
}
func (d *Document) parseParagraph(i int, parentStop stopFn) (int, Node) {
lines, start := []string{d.tokens[i].content}, i
i++
stop := func(d *Document, i int) bool {
return parentStop(d, i) || d.tokens[i].kind != "text" || d.tokens[i].content == ""
}
for ; !stop(d, i); i++ {
lines = append(lines, d.tokens[i].content)
}
consumed := i - start
return consumed, Paragraph{d.parseInline(strings.Join(lines, "\n"))}
}
func (d *Document) parseHorizontalRule(i int, parentStop stopFn) (int, Node) {
return 1, HorizontalRule{}
}
func (n Paragraph) String() string { return orgWriter.nodesAsString(n) }
func (n HorizontalRule) String() string { return orgWriter.nodesAsString(n) }

130
vendor/github.com/niklasfasching/go-org/org/table.go generated vendored Normal file
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package org
import (
"regexp"
"strconv"
"strings"
"unicode/utf8"
)
type Table struct {
Rows []Row
ColumnInfos []ColumnInfo
}
type Row struct {
Columns []Column
IsSpecial bool
}
type Column struct {
Children []Node
*ColumnInfo
}
type ColumnInfo struct {
Align string
Len int
}
var tableSeparatorRegexp = regexp.MustCompile(`^(\s*)(\|[+-|]*)\s*$`)
var tableRowRegexp = regexp.MustCompile(`^(\s*)(\|.*)`)
var columnAlignRegexp = regexp.MustCompile(`^<(l|c|r)>$`)
func lexTable(line string) (token, bool) {
if m := tableSeparatorRegexp.FindStringSubmatch(line); m != nil {
return token{"tableSeparator", len(m[1]), m[2], m}, true
} else if m := tableRowRegexp.FindStringSubmatch(line); m != nil {
return token{"tableRow", len(m[1]), m[2], m}, true
}
return nilToken, false
}
func (d *Document) parseTable(i int, parentStop stopFn) (int, Node) {
rawRows, start := [][]string{}, i
for ; !parentStop(d, i); i++ {
if t := d.tokens[i]; t.kind == "tableRow" {
rawRow := strings.FieldsFunc(d.tokens[i].content, func(r rune) bool { return r == '|' })
for i := range rawRow {
rawRow[i] = strings.TrimSpace(rawRow[i])
}
rawRows = append(rawRows, rawRow)
} else if t.kind == "tableSeparator" {
rawRows = append(rawRows, nil)
} else {
break
}
}
table := Table{nil, getColumnInfos(rawRows)}
for _, rawColumns := range rawRows {
row := Row{nil, isSpecialRow(rawColumns)}
if len(rawColumns) != 0 {
for i := range table.ColumnInfos {
column := Column{nil, &table.ColumnInfos[i]}
if i < len(rawColumns) {
column.Children = d.parseInline(rawColumns[i])
}
row.Columns = append(row.Columns, column)
}
}
table.Rows = append(table.Rows, row)
}
return i - start, table
}
func getColumnInfos(rows [][]string) []ColumnInfo {
columnCount := 0
for _, columns := range rows {
if n := len(columns); n > columnCount {
columnCount = n
}
}
columnInfos := make([]ColumnInfo, columnCount)
for i := 0; i < columnCount; i++ {
countNumeric, countNonNumeric := 0, 0
for _, columns := range rows {
if i >= len(columns) {
continue
}
if n := utf8.RuneCountInString(columns[i]); n > columnInfos[i].Len {
columnInfos[i].Len = n
}
if m := columnAlignRegexp.FindStringSubmatch(columns[i]); m != nil && isSpecialRow(columns) {
switch m[1] {
case "l":
columnInfos[i].Align = "left"
case "c":
columnInfos[i].Align = "center"
case "r":
columnInfos[i].Align = "right"
}
} else if _, err := strconv.ParseFloat(columns[i], 32); err == nil {
countNumeric++
} else if strings.TrimSpace(columns[i]) != "" {
countNonNumeric++
}
}
if columnInfos[i].Align == "" && countNumeric >= countNonNumeric {
columnInfos[i].Align = "right"
}
}
return columnInfos
}
func isSpecialRow(rawColumns []string) bool {
isAlignRow := true
for _, rawColumn := range rawColumns {
if !columnAlignRegexp.MatchString(rawColumn) && rawColumn != "" {
isAlignRow = false
}
}
return isAlignRow
}
func (n Table) String() string { return orgWriter.nodesAsString(n) }

19
vendor/github.com/niklasfasching/go-org/org/util.go generated vendored Normal file
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package org
func isSecondBlankLine(d *Document, i int) bool {
if i-1 <= 0 {
return false
}
t1, t2 := d.tokens[i-1], d.tokens[i]
if t1.kind == "text" && t2.kind == "text" && t1.content == "" && t2.content == "" {
return true
}
return false
}
func isImageOrVideoLink(n Node) bool {
if l, ok := n.(RegularLink); ok && l.Kind() == "video" || l.Kind() == "image" {
return true
}
return false
}

103
vendor/github.com/niklasfasching/go-org/org/writer.go generated vendored Normal file
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package org
import "fmt"
// Writer is the interface that is used to export a parsed document into a new format. See Document.Write().
type Writer interface {
Before(*Document) // Before is called before any nodes are passed to the writer.
After(*Document) // After is called after all nodes have been passed to the writer.
String() string // String is called at the very end to retrieve the final output.
WriterWithExtensions() Writer
WriteKeyword(Keyword)
WriteInclude(Include)
WriteComment(Comment)
WriteNodeWithMeta(NodeWithMeta)
WriteNodeWithName(NodeWithName)
WriteHeadline(Headline)
WriteBlock(Block)
WriteExample(Example)
WriteDrawer(Drawer)
WritePropertyDrawer(PropertyDrawer)
WriteList(List)
WriteListItem(ListItem)
WriteDescriptiveListItem(DescriptiveListItem)
WriteTable(Table)
WriteHorizontalRule(HorizontalRule)
WriteParagraph(Paragraph)
WriteText(Text)
WriteEmphasis(Emphasis)
WriteLatexFragment(LatexFragment)
WriteStatisticToken(StatisticToken)
WriteExplicitLineBreak(ExplicitLineBreak)
WriteLineBreak(LineBreak)
WriteRegularLink(RegularLink)
WriteTimestamp(Timestamp)
WriteFootnoteLink(FootnoteLink)
WriteFootnoteDefinition(FootnoteDefinition)
}
func WriteNodes(w Writer, nodes ...Node) {
w = w.WriterWithExtensions()
for _, n := range nodes {
switch n := n.(type) {
case Keyword:
w.WriteKeyword(n)
case Include:
w.WriteInclude(n)
case Comment:
w.WriteComment(n)
case NodeWithMeta:
w.WriteNodeWithMeta(n)
case NodeWithName:
w.WriteNodeWithName(n)
case Headline:
w.WriteHeadline(n)
case Block:
w.WriteBlock(n)
case Example:
w.WriteExample(n)
case Drawer:
w.WriteDrawer(n)
case PropertyDrawer:
w.WritePropertyDrawer(n)
case List:
w.WriteList(n)
case ListItem:
w.WriteListItem(n)
case DescriptiveListItem:
w.WriteDescriptiveListItem(n)
case Table:
w.WriteTable(n)
case HorizontalRule:
w.WriteHorizontalRule(n)
case Paragraph:
w.WriteParagraph(n)
case Text:
w.WriteText(n)
case Emphasis:
w.WriteEmphasis(n)
case LatexFragment:
w.WriteLatexFragment(n)
case StatisticToken:
w.WriteStatisticToken(n)
case ExplicitLineBreak:
w.WriteExplicitLineBreak(n)
case LineBreak:
w.WriteLineBreak(n)
case RegularLink:
w.WriteRegularLink(n)
case Timestamp:
w.WriteTimestamp(n)
case FootnoteLink:
w.WriteFootnoteLink(n)
case FootnoteDefinition:
w.WriteFootnoteDefinition(n)
default:
if n != nil {
panic(fmt.Sprintf("bad node %T %#v", n, n))
}
}
}
}

32
vendor/github.com/russross/blackfriday/doc.go generated vendored
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@ -1,32 +0,0 @@
// Package blackfriday is a Markdown processor.
//
// It translates plain text with simple formatting rules into HTML or LaTeX.
//
// Sanitized Anchor Names
//
// Blackfriday includes an algorithm for creating sanitized anchor names
// corresponding to a given input text. This algorithm is used to create
// anchors for headings when EXTENSION_AUTO_HEADER_IDS is enabled. The
// algorithm is specified below, so that other packages can create
// compatible anchor names and links to those anchors.
//
// The algorithm iterates over the input text, interpreted as UTF-8,
// one Unicode code point (rune) at a time. All runes that are letters (category L)
// or numbers (category N) are considered valid characters. They are mapped to
// lower case, and included in the output. All other runes are considered
// invalid characters. Invalid characters that preceed the first valid character,
// as well as invalid character that follow the last valid character
// are dropped completely. All other sequences of invalid characters
// between two valid characters are replaced with a single dash character '-'.
//
// SanitizedAnchorName exposes this functionality, and can be used to
// create compatible links to the anchor names generated by blackfriday.
// This algorithm is also implemented in a small standalone package at
// github.com/shurcooL/sanitized_anchor_name. It can be useful for clients
// that want a small package and don't need full functionality of blackfriday.
package blackfriday
// NOTE: Keep Sanitized Anchor Name algorithm in sync with package
// github.com/shurcooL/sanitized_anchor_name.
// Otherwise, users of sanitized_anchor_name will get anchor names
// that are incompatible with those generated by blackfriday.

938
vendor/github.com/russross/blackfriday/html.go generated vendored
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@ -1,938 +0,0 @@
//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// HTML rendering backend
//
//
package blackfriday
import (
"bytes"
"fmt"
"regexp"
"strconv"
"strings"
)
// Html renderer configuration options.
const (
HTML_SKIP_HTML = 1 << iota // skip preformatted HTML blocks
HTML_SKIP_STYLE // skip embedded <style> elements
HTML_SKIP_IMAGES // skip embedded images
HTML_SKIP_LINKS // skip all links
HTML_SAFELINK // only link to trusted protocols
HTML_NOFOLLOW_LINKS // only link with rel="nofollow"
HTML_NOREFERRER_LINKS // only link with rel="noreferrer"
HTML_HREF_TARGET_BLANK // add a blank target
HTML_TOC // generate a table of contents
HTML_OMIT_CONTENTS // skip the main contents (for a standalone table of contents)
HTML_COMPLETE_PAGE // generate a complete HTML page
HTML_USE_XHTML // generate XHTML output instead of HTML
HTML_USE_SMARTYPANTS // enable smart punctuation substitutions
HTML_SMARTYPANTS_FRACTIONS // enable smart fractions (with HTML_USE_SMARTYPANTS)
HTML_SMARTYPANTS_DASHES // enable smart dashes (with HTML_USE_SMARTYPANTS)
HTML_SMARTYPANTS_LATEX_DASHES // enable LaTeX-style dashes (with HTML_USE_SMARTYPANTS and HTML_SMARTYPANTS_DASHES)
HTML_SMARTYPANTS_ANGLED_QUOTES // enable angled double quotes (with HTML_USE_SMARTYPANTS) for double quotes rendering
HTML_SMARTYPANTS_QUOTES_NBSP // enable "French guillemets" (with HTML_USE_SMARTYPANTS)
HTML_FOOTNOTE_RETURN_LINKS // generate a link at the end of a footnote to return to the source
)
var (
alignments = []string{
"left",
"right",
"center",
}
// TODO: improve this regexp to catch all possible entities:
htmlEntity = regexp.MustCompile(`&[a-z]{2,5};`)
)
type HtmlRendererParameters struct {
// Prepend this text to each relative URL.
AbsolutePrefix string
// Add this text to each footnote anchor, to ensure uniqueness.
FootnoteAnchorPrefix string
// Show this text inside the <a> tag for a footnote return link, if the
// HTML_FOOTNOTE_RETURN_LINKS flag is enabled. If blank, the string
// <sup>[return]</sup> is used.
FootnoteReturnLinkContents string
// If set, add this text to the front of each Header ID, to ensure
// uniqueness.
HeaderIDPrefix string
// If set, add this text to the back of each Header ID, to ensure uniqueness.
HeaderIDSuffix string
}
// Html is a type that implements the Renderer interface for HTML output.
//
// Do not create this directly, instead use the HtmlRenderer function.
type Html struct {
flags int // HTML_* options
closeTag string // how to end singleton tags: either " />" or ">"
title string // document title
css string // optional css file url (used with HTML_COMPLETE_PAGE)
parameters HtmlRendererParameters
// table of contents data
tocMarker int
headerCount int
currentLevel int
toc *bytes.Buffer
// Track header IDs to prevent ID collision in a single generation.
headerIDs map[string]int
smartypants *smartypantsRenderer
}
const (
xhtmlClose = " />"
htmlClose = ">"
)
// HtmlRenderer creates and configures an Html object, which
// satisfies the Renderer interface.
//
// flags is a set of HTML_* options ORed together.
// title is the title of the document, and css is a URL for the document's
// stylesheet.
// title and css are only used when HTML_COMPLETE_PAGE is selected.
func HtmlRenderer(flags int, title string, css string) Renderer {
return HtmlRendererWithParameters(flags, title, css, HtmlRendererParameters{})
}
func HtmlRendererWithParameters(flags int, title string,
css string, renderParameters HtmlRendererParameters) Renderer {
// configure the rendering engine
closeTag := htmlClose
if flags&HTML_USE_XHTML != 0 {
closeTag = xhtmlClose
}
if renderParameters.FootnoteReturnLinkContents == "" {
renderParameters.FootnoteReturnLinkContents = `<sup>[return]</sup>`
}
return &Html{
flags: flags,
closeTag: closeTag,
title: title,
css: css,
parameters: renderParameters,
headerCount: 0,
currentLevel: 0,
toc: new(bytes.Buffer),
headerIDs: make(map[string]int),
smartypants: smartypants(flags),
}
}
// Using if statements is a bit faster than a switch statement. As the compiler
// improves, this should be unnecessary this is only worthwhile because
// attrEscape is the single largest CPU user in normal use.
// Also tried using map, but that gave a ~3x slowdown.
func escapeSingleChar(char byte) (string, bool) {
if char == '"' {
return "&quot;", true
}
if char == '&' {
return "&amp;", true
}
if char == '<' {
return "&lt;", true
}
if char == '>' {
return "&gt;", true
}
return "", false
}
func attrEscape(out *bytes.Buffer, src []byte) {
org := 0
for i, ch := range src {
if entity, ok := escapeSingleChar(ch); ok {
if i > org {
// copy all the normal characters since the last escape
out.Write(src[org:i])
}
org = i + 1
out.WriteString(entity)
}
}
if org < len(src) {
out.Write(src[org:])
}
}
func entityEscapeWithSkip(out *bytes.Buffer, src []byte, skipRanges [][]int) {
end := 0
for _, rang := range skipRanges {
attrEscape(out, src[end:rang[0]])
out.Write(src[rang[0]:rang[1]])
end = rang[1]
}
attrEscape(out, src[end:])
}
func (options *Html) GetFlags() int {
return options.flags
}
func (options *Html) TitleBlock(out *bytes.Buffer, text []byte) {
text = bytes.TrimPrefix(text, []byte("% "))
text = bytes.Replace(text, []byte("\n% "), []byte("\n"), -1)
out.WriteString("<h1 class=\"title\">")
out.Write(text)
out.WriteString("\n</h1>")
}
func (options *Html) Header(out *bytes.Buffer, text func() bool, level int, id string) {
marker := out.Len()
doubleSpace(out)
if id == "" && options.flags&HTML_TOC != 0 {
id = fmt.Sprintf("toc_%d", options.headerCount)
}
if id != "" {
id = options.ensureUniqueHeaderID(id)
if options.parameters.HeaderIDPrefix != "" {
id = options.parameters.HeaderIDPrefix + id
}
if options.parameters.HeaderIDSuffix != "" {
id = id + options.parameters.HeaderIDSuffix
}
out.WriteString(fmt.Sprintf("<h%d id=\"%s\">", level, id))
} else {
out.WriteString(fmt.Sprintf("<h%d>", level))
}
tocMarker := out.Len()
if !text() {
out.Truncate(marker)
return
}
// are we building a table of contents?
if options.flags&HTML_TOC != 0 {
options.TocHeaderWithAnchor(out.Bytes()[tocMarker:], level, id)
}
out.WriteString(fmt.Sprintf("</h%d>\n", level))
}
func (options *Html) BlockHtml(out *bytes.Buffer, text []byte) {
if options.flags&HTML_SKIP_HTML != 0 {
return
}
doubleSpace(out)
out.Write(text)
out.WriteByte('\n')
}
func (options *Html) HRule(out *bytes.Buffer) {
doubleSpace(out)
out.WriteString("<hr")
out.WriteString(options.closeTag)
out.WriteByte('\n')
}
func (options *Html) BlockCode(out *bytes.Buffer, text []byte, info string) {
doubleSpace(out)
endOfLang := strings.IndexAny(info, "\t ")
if endOfLang < 0 {
endOfLang = len(info)
}
lang := info[:endOfLang]
if len(lang) == 0 || lang == "." {
out.WriteString("<pre><code>")
} else {
out.WriteString("<pre><code class=\"language-")
attrEscape(out, []byte(lang))
out.WriteString("\">")
}
attrEscape(out, text)
out.WriteString("</code></pre>\n")
}
func (options *Html) BlockQuote(out *bytes.Buffer, text []byte) {
doubleSpace(out)
out.WriteString("<blockquote>\n")
out.Write(text)
out.WriteString("</blockquote>\n")
}
func (options *Html) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
doubleSpace(out)
out.WriteString("<table>\n<thead>\n")
out.Write(header)
out.WriteString("</thead>\n\n<tbody>\n")
out.Write(body)
out.WriteString("</tbody>\n</table>\n")
}
func (options *Html) TableRow(out *bytes.Buffer, text []byte) {
doubleSpace(out)
out.WriteString("<tr>\n")
out.Write(text)
out.WriteString("\n</tr>\n")
}
func (options *Html) TableHeaderCell(out *bytes.Buffer, text []byte, align int) {
doubleSpace(out)
switch align {
case TABLE_ALIGNMENT_LEFT:
out.WriteString("<th align=\"left\">")
case TABLE_ALIGNMENT_RIGHT:
out.WriteString("<th align=\"right\">")
case TABLE_ALIGNMENT_CENTER:
out.WriteString("<th align=\"center\">")
default:
out.WriteString("<th>")
}
out.Write(text)
out.WriteString("</th>")
}
func (options *Html) TableCell(out *bytes.Buffer, text []byte, align int) {
doubleSpace(out)
switch align {
case TABLE_ALIGNMENT_LEFT:
out.WriteString("<td align=\"left\">")
case TABLE_ALIGNMENT_RIGHT:
out.WriteString("<td align=\"right\">")
case TABLE_ALIGNMENT_CENTER:
out.WriteString("<td align=\"center\">")
default:
out.WriteString("<td>")
}
out.Write(text)
out.WriteString("</td>")
}
func (options *Html) Footnotes(out *bytes.Buffer, text func() bool) {
out.WriteString("<div class=\"footnotes\">\n")
options.HRule(out)
options.List(out, text, LIST_TYPE_ORDERED)
out.WriteString("</div>\n")
}
func (options *Html) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
if flags&LIST_ITEM_CONTAINS_BLOCK != 0 || flags&LIST_ITEM_BEGINNING_OF_LIST != 0 {
doubleSpace(out)
}
slug := slugify(name)
out.WriteString(`<li id="`)
out.WriteString(`fn:`)
out.WriteString(options.parameters.FootnoteAnchorPrefix)
out.Write(slug)
out.WriteString(`">`)
out.Write(text)
if options.flags&HTML_FOOTNOTE_RETURN_LINKS != 0 {
out.WriteString(` <a class="footnote-return" href="#`)
out.WriteString(`fnref:`)
out.WriteString(options.parameters.FootnoteAnchorPrefix)
out.Write(slug)
out.WriteString(`">`)
out.WriteString(options.parameters.FootnoteReturnLinkContents)
out.WriteString(`</a>`)
}
out.WriteString("</li>\n")
}
func (options *Html) List(out *bytes.Buffer, text func() bool, flags int) {
marker := out.Len()
doubleSpace(out)
if flags&LIST_TYPE_DEFINITION != 0 {
out.WriteString("<dl>")
} else if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("<ol>")
} else {
out.WriteString("<ul>")
}
if !text() {
out.Truncate(marker)
return
}
if flags&LIST_TYPE_DEFINITION != 0 {
out.WriteString("</dl>\n")
} else if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("</ol>\n")
} else {
out.WriteString("</ul>\n")
}
}
func (options *Html) ListItem(out *bytes.Buffer, text []byte, flags int) {
if (flags&LIST_ITEM_CONTAINS_BLOCK != 0 && flags&LIST_TYPE_DEFINITION == 0) ||
flags&LIST_ITEM_BEGINNING_OF_LIST != 0 {
doubleSpace(out)
}
if flags&LIST_TYPE_TERM != 0 {
out.WriteString("<dt>")
} else if flags&LIST_TYPE_DEFINITION != 0 {
out.WriteString("<dd>")
} else {
out.WriteString("<li>")
}
out.Write(text)
if flags&LIST_TYPE_TERM != 0 {
out.WriteString("</dt>\n")
} else if flags&LIST_TYPE_DEFINITION != 0 {
out.WriteString("</dd>\n")
} else {
out.WriteString("</li>\n")
}
}
func (options *Html) Paragraph(out *bytes.Buffer, text func() bool) {
marker := out.Len()
doubleSpace(out)
out.WriteString("<p>")
if !text() {
out.Truncate(marker)
return
}
out.WriteString("</p>\n")
}
func (options *Html) AutoLink(out *bytes.Buffer, link []byte, kind int) {
skipRanges := htmlEntity.FindAllIndex(link, -1)
if options.flags&HTML_SAFELINK != 0 && !isSafeLink(link) && kind != LINK_TYPE_EMAIL {
// mark it but don't link it if it is not a safe link: no smartypants
out.WriteString("<tt>")
entityEscapeWithSkip(out, link, skipRanges)
out.WriteString("</tt>")
return
}
out.WriteString("<a href=\"")
if kind == LINK_TYPE_EMAIL {
out.WriteString("mailto:")
} else {
options.maybeWriteAbsolutePrefix(out, link)
}
entityEscapeWithSkip(out, link, skipRanges)
var relAttrs []string
if options.flags&HTML_NOFOLLOW_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "nofollow")
}
if options.flags&HTML_NOREFERRER_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "noreferrer")
}
if len(relAttrs) > 0 {
out.WriteString(fmt.Sprintf("\" rel=\"%s", strings.Join(relAttrs, " ")))
}
// blank target only add to external link
if options.flags&HTML_HREF_TARGET_BLANK != 0 && !isRelativeLink(link) {
out.WriteString("\" target=\"_blank")
}
out.WriteString("\">")
// Pretty print: if we get an email address as
// an actual URI, e.g. `mailto:foo@bar.com`, we don't
// want to print the `mailto:` prefix
switch {
case bytes.HasPrefix(link, []byte("mailto://")):
attrEscape(out, link[len("mailto://"):])
case bytes.HasPrefix(link, []byte("mailto:")):
attrEscape(out, link[len("mailto:"):])
default:
entityEscapeWithSkip(out, link, skipRanges)
}
out.WriteString("</a>")
}
func (options *Html) CodeSpan(out *bytes.Buffer, text []byte) {
out.WriteString("<code>")
attrEscape(out, text)
out.WriteString("</code>")
}
func (options *Html) DoubleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("<strong>")
out.Write(text)
out.WriteString("</strong>")
}
func (options *Html) Emphasis(out *bytes.Buffer, text []byte) {
if len(text) == 0 {
return
}
out.WriteString("<em>")
out.Write(text)
out.WriteString("</em>")
}
func (options *Html) maybeWriteAbsolutePrefix(out *bytes.Buffer, link []byte) {
if options.parameters.AbsolutePrefix != "" && isRelativeLink(link) && link[0] != '.' {
out.WriteString(options.parameters.AbsolutePrefix)
if link[0] != '/' {
out.WriteByte('/')
}
}
}
func (options *Html) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
if options.flags&HTML_SKIP_IMAGES != 0 {
return
}
out.WriteString("<img src=\"")
options.maybeWriteAbsolutePrefix(out, link)
attrEscape(out, link)
out.WriteString("\" alt=\"")
if len(alt) > 0 {
attrEscape(out, alt)
}
if len(title) > 0 {
out.WriteString("\" title=\"")
attrEscape(out, title)
}
out.WriteByte('"')
out.WriteString(options.closeTag)
}
func (options *Html) LineBreak(out *bytes.Buffer) {
out.WriteString("<br")
out.WriteString(options.closeTag)
out.WriteByte('\n')
}
func (options *Html) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
if options.flags&HTML_SKIP_LINKS != 0 {
// write the link text out but don't link it, just mark it with typewriter font
out.WriteString("<tt>")
attrEscape(out, content)
out.WriteString("</tt>")
return
}
if options.flags&HTML_SAFELINK != 0 && !isSafeLink(link) {
// write the link text out but don't link it, just mark it with typewriter font
out.WriteString("<tt>")
attrEscape(out, content)
out.WriteString("</tt>")
return
}
out.WriteString("<a href=\"")
options.maybeWriteAbsolutePrefix(out, link)
attrEscape(out, link)
if len(title) > 0 {
out.WriteString("\" title=\"")
attrEscape(out, title)
}
var relAttrs []string
if options.flags&HTML_NOFOLLOW_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "nofollow")
}
if options.flags&HTML_NOREFERRER_LINKS != 0 && !isRelativeLink(link) {
relAttrs = append(relAttrs, "noreferrer")
}
if len(relAttrs) > 0 {
out.WriteString(fmt.Sprintf("\" rel=\"%s", strings.Join(relAttrs, " ")))
}
// blank target only add to external link
if options.flags&HTML_HREF_TARGET_BLANK != 0 && !isRelativeLink(link) {
out.WriteString("\" target=\"_blank")
}
out.WriteString("\">")
out.Write(content)
out.WriteString("</a>")
return
}
func (options *Html) RawHtmlTag(out *bytes.Buffer, text []byte) {
if options.flags&HTML_SKIP_HTML != 0 {
return
}
if options.flags&HTML_SKIP_STYLE != 0 && isHtmlTag(text, "style") {
return
}
if options.flags&HTML_SKIP_LINKS != 0 && isHtmlTag(text, "a") {
return
}
if options.flags&HTML_SKIP_IMAGES != 0 && isHtmlTag(text, "img") {
return
}
out.Write(text)
}
func (options *Html) TripleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("<strong><em>")
out.Write(text)
out.WriteString("</em></strong>")
}
func (options *Html) StrikeThrough(out *bytes.Buffer, text []byte) {
out.WriteString("<del>")
out.Write(text)
out.WriteString("</del>")
}
func (options *Html) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
slug := slugify(ref)
out.WriteString(`<sup class="footnote-ref" id="`)
out.WriteString(`fnref:`)
out.WriteString(options.parameters.FootnoteAnchorPrefix)
out.Write(slug)
out.WriteString(`"><a href="#`)
out.WriteString(`fn:`)
out.WriteString(options.parameters.FootnoteAnchorPrefix)
out.Write(slug)
out.WriteString(`">`)
out.WriteString(strconv.Itoa(id))
out.WriteString(`</a></sup>`)
}
func (options *Html) Entity(out *bytes.Buffer, entity []byte) {
out.Write(entity)
}
func (options *Html) NormalText(out *bytes.Buffer, text []byte) {
if options.flags&HTML_USE_SMARTYPANTS != 0 {
options.Smartypants(out, text)
} else {
attrEscape(out, text)
}
}
func (options *Html) Smartypants(out *bytes.Buffer, text []byte) {
smrt := smartypantsData{false, false}
// first do normal entity escaping
var escaped bytes.Buffer
attrEscape(&escaped, text)
text = escaped.Bytes()
mark := 0
for i := 0; i < len(text); i++ {
if action := options.smartypants[text[i]]; action != nil {
if i > mark {
out.Write(text[mark:i])
}
previousChar := byte(0)
if i > 0 {
previousChar = text[i-1]
}
i += action(out, &smrt, previousChar, text[i:])
mark = i + 1
}
}
if mark < len(text) {
out.Write(text[mark:])
}
}
func (options *Html) DocumentHeader(out *bytes.Buffer) {
if options.flags&HTML_COMPLETE_PAGE == 0 {
return
}
ending := ""
if options.flags&HTML_USE_XHTML != 0 {
out.WriteString("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" ")
out.WriteString("\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n")
out.WriteString("<html xmlns=\"http://www.w3.org/1999/xhtml\">\n")
ending = " /"
} else {
out.WriteString("<!DOCTYPE html>\n")
out.WriteString("<html>\n")
}
out.WriteString("<head>\n")
out.WriteString(" <title>")
options.NormalText(out, []byte(options.title))
out.WriteString("</title>\n")
out.WriteString(" <meta name=\"GENERATOR\" content=\"Blackfriday Markdown Processor v")
out.WriteString(VERSION)
out.WriteString("\"")
out.WriteString(ending)
out.WriteString(">\n")
out.WriteString(" <meta charset=\"utf-8\"")
out.WriteString(ending)
out.WriteString(">\n")
if options.css != "" {
out.WriteString(" <link rel=\"stylesheet\" type=\"text/css\" href=\"")
attrEscape(out, []byte(options.css))
out.WriteString("\"")
out.WriteString(ending)
out.WriteString(">\n")
}
out.WriteString("</head>\n")
out.WriteString("<body>\n")
options.tocMarker = out.Len()
}
func (options *Html) DocumentFooter(out *bytes.Buffer) {
// finalize and insert the table of contents
if options.flags&HTML_TOC != 0 {
options.TocFinalize()
// now we have to insert the table of contents into the document
var temp bytes.Buffer
// start by making a copy of everything after the document header
temp.Write(out.Bytes()[options.tocMarker:])
// now clear the copied material from the main output buffer
out.Truncate(options.tocMarker)
// corner case spacing issue
if options.flags&HTML_COMPLETE_PAGE != 0 {
out.WriteByte('\n')
}
// insert the table of contents
out.WriteString("<nav>\n")
out.Write(options.toc.Bytes())
out.WriteString("</nav>\n")
// corner case spacing issue
if options.flags&HTML_COMPLETE_PAGE == 0 && options.flags&HTML_OMIT_CONTENTS == 0 {
out.WriteByte('\n')
}
// write out everything that came after it
if options.flags&HTML_OMIT_CONTENTS == 0 {
out.Write(temp.Bytes())
}
}
if options.flags&HTML_COMPLETE_PAGE != 0 {
out.WriteString("\n</body>\n")
out.WriteString("</html>\n")
}
}
func (options *Html) TocHeaderWithAnchor(text []byte, level int, anchor string) {
for level > options.currentLevel {
switch {
case bytes.HasSuffix(options.toc.Bytes(), []byte("</li>\n")):
// this sublist can nest underneath a header
size := options.toc.Len()
options.toc.Truncate(size - len("</li>\n"))
case options.currentLevel > 0:
options.toc.WriteString("<li>")
}
if options.toc.Len() > 0 {
options.toc.WriteByte('\n')
}
options.toc.WriteString("<ul>\n")
options.currentLevel++
}
for level < options.currentLevel {
options.toc.WriteString("</ul>")
if options.currentLevel > 1 {
options.toc.WriteString("</li>\n")
}
options.currentLevel--
}
options.toc.WriteString("<li><a href=\"#")
if anchor != "" {
options.toc.WriteString(anchor)
} else {
options.toc.WriteString("toc_")
options.toc.WriteString(strconv.Itoa(options.headerCount))
}
options.toc.WriteString("\">")
options.headerCount++
options.toc.Write(text)
options.toc.WriteString("</a></li>\n")
}
func (options *Html) TocHeader(text []byte, level int) {
options.TocHeaderWithAnchor(text, level, "")
}
func (options *Html) TocFinalize() {
for options.currentLevel > 1 {
options.toc.WriteString("</ul></li>\n")
options.currentLevel--
}
if options.currentLevel > 0 {
options.toc.WriteString("</ul>\n")
}
}
func isHtmlTag(tag []byte, tagname string) bool {
found, _ := findHtmlTagPos(tag, tagname)
return found
}
// Look for a character, but ignore it when it's in any kind of quotes, it
// might be JavaScript
func skipUntilCharIgnoreQuotes(html []byte, start int, char byte) int {
inSingleQuote := false
inDoubleQuote := false
inGraveQuote := false
i := start
for i < len(html) {
switch {
case html[i] == char && !inSingleQuote && !inDoubleQuote && !inGraveQuote:
return i
case html[i] == '\'':
inSingleQuote = !inSingleQuote
case html[i] == '"':
inDoubleQuote = !inDoubleQuote
case html[i] == '`':
inGraveQuote = !inGraveQuote
}
i++
}
return start
}
func findHtmlTagPos(tag []byte, tagname string) (bool, int) {
i := 0
if i < len(tag) && tag[0] != '<' {
return false, -1
}
i++
i = skipSpace(tag, i)
if i < len(tag) && tag[i] == '/' {
i++
}
i = skipSpace(tag, i)
j := 0
for ; i < len(tag); i, j = i+1, j+1 {
if j >= len(tagname) {
break
}
if strings.ToLower(string(tag[i]))[0] != tagname[j] {
return false, -1
}
}
if i == len(tag) {
return false, -1
}
rightAngle := skipUntilCharIgnoreQuotes(tag, i, '>')
if rightAngle > i {
return true, rightAngle
}
return false, -1
}
func skipUntilChar(text []byte, start int, char byte) int {
i := start
for i < len(text) && text[i] != char {
i++
}
return i
}
func skipSpace(tag []byte, i int) int {
for i < len(tag) && isspace(tag[i]) {
i++
}
return i
}
func skipChar(data []byte, start int, char byte) int {
i := start
for i < len(data) && data[i] == char {
i++
}
return i
}
func doubleSpace(out *bytes.Buffer) {
if out.Len() > 0 {
out.WriteByte('\n')
}
}
func isRelativeLink(link []byte) (yes bool) {
// a tag begin with '#'
if link[0] == '#' {
return true
}
// link begin with '/' but not '//', the second maybe a protocol relative link
if len(link) >= 2 && link[0] == '/' && link[1] != '/' {
return true
}
// only the root '/'
if len(link) == 1 && link[0] == '/' {
return true
}
// current directory : begin with "./"
if bytes.HasPrefix(link, []byte("./")) {
return true
}
// parent directory : begin with "../"
if bytes.HasPrefix(link, []byte("../")) {
return true
}
return false
}
func (options *Html) ensureUniqueHeaderID(id string) string {
for count, found := options.headerIDs[id]; found; count, found = options.headerIDs[id] {
tmp := fmt.Sprintf("%s-%d", id, count+1)
if _, tmpFound := options.headerIDs[tmp]; !tmpFound {
options.headerIDs[id] = count + 1
id = tmp
} else {
id = id + "-1"
}
}
if _, found := options.headerIDs[id]; !found {
options.headerIDs[id] = 0
}
return id
}

334
vendor/github.com/russross/blackfriday/latex.go generated vendored
View file

@ -1,334 +0,0 @@
//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// LaTeX rendering backend
//
//
package blackfriday
import (
"bytes"
"strings"
)
// Latex is a type that implements the Renderer interface for LaTeX output.
//
// Do not create this directly, instead use the LatexRenderer function.
type Latex struct {
}
// LatexRenderer creates and configures a Latex object, which
// satisfies the Renderer interface.
//
// flags is a set of LATEX_* options ORed together (currently no such options
// are defined).
func LatexRenderer(flags int) Renderer {
return &Latex{}
}
func (options *Latex) GetFlags() int {
return 0
}
// render code chunks using verbatim, or listings if we have a language
func (options *Latex) BlockCode(out *bytes.Buffer, text []byte, info string) {
if info == "" {
out.WriteString("\n\\begin{verbatim}\n")
} else {
lang := strings.Fields(info)[0]
out.WriteString("\n\\begin{lstlisting}[language=")
out.WriteString(lang)
out.WriteString("]\n")
}
out.Write(text)
if info == "" {
out.WriteString("\n\\end{verbatim}\n")
} else {
out.WriteString("\n\\end{lstlisting}\n")
}
}
func (options *Latex) TitleBlock(out *bytes.Buffer, text []byte) {
}
func (options *Latex) BlockQuote(out *bytes.Buffer, text []byte) {
out.WriteString("\n\\begin{quotation}\n")
out.Write(text)
out.WriteString("\n\\end{quotation}\n")
}
func (options *Latex) BlockHtml(out *bytes.Buffer, text []byte) {
// a pretty lame thing to do...
out.WriteString("\n\\begin{verbatim}\n")
out.Write(text)
out.WriteString("\n\\end{verbatim}\n")
}
func (options *Latex) Header(out *bytes.Buffer, text func() bool, level int, id string) {
marker := out.Len()
switch level {
case 1:
out.WriteString("\n\\section{")
case 2:
out.WriteString("\n\\subsection{")
case 3:
out.WriteString("\n\\subsubsection{")
case 4:
out.WriteString("\n\\paragraph{")
case 5:
out.WriteString("\n\\subparagraph{")
case 6:
out.WriteString("\n\\textbf{")
}
if !text() {
out.Truncate(marker)
return
}
out.WriteString("}\n")
}
func (options *Latex) HRule(out *bytes.Buffer) {
out.WriteString("\n\\HRule\n")
}
func (options *Latex) List(out *bytes.Buffer, text func() bool, flags int) {
marker := out.Len()
if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("\n\\begin{enumerate}\n")
} else {
out.WriteString("\n\\begin{itemize}\n")
}
if !text() {
out.Truncate(marker)
return
}
if flags&LIST_TYPE_ORDERED != 0 {
out.WriteString("\n\\end{enumerate}\n")
} else {
out.WriteString("\n\\end{itemize}\n")
}
}
func (options *Latex) ListItem(out *bytes.Buffer, text []byte, flags int) {
out.WriteString("\n\\item ")
out.Write(text)
}
func (options *Latex) Paragraph(out *bytes.Buffer, text func() bool) {
marker := out.Len()
out.WriteString("\n")
if !text() {
out.Truncate(marker)
return
}
out.WriteString("\n")
}
func (options *Latex) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
out.WriteString("\n\\begin{tabular}{")
for _, elt := range columnData {
switch elt {
case TABLE_ALIGNMENT_LEFT:
out.WriteByte('l')
case TABLE_ALIGNMENT_RIGHT:
out.WriteByte('r')
default:
out.WriteByte('c')
}
}
out.WriteString("}\n")
out.Write(header)
out.WriteString(" \\\\\n\\hline\n")
out.Write(body)
out.WriteString("\n\\end{tabular}\n")
}
func (options *Latex) TableRow(out *bytes.Buffer, text []byte) {
if out.Len() > 0 {
out.WriteString(" \\\\\n")
}
out.Write(text)
}
func (options *Latex) TableHeaderCell(out *bytes.Buffer, text []byte, align int) {
if out.Len() > 0 {
out.WriteString(" & ")
}
out.Write(text)
}
func (options *Latex) TableCell(out *bytes.Buffer, text []byte, align int) {
if out.Len() > 0 {
out.WriteString(" & ")
}
out.Write(text)
}
// TODO: this
func (options *Latex) Footnotes(out *bytes.Buffer, text func() bool) {
}
func (options *Latex) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
}
func (options *Latex) AutoLink(out *bytes.Buffer, link []byte, kind int) {
out.WriteString("\\href{")
if kind == LINK_TYPE_EMAIL {
out.WriteString("mailto:")
}
out.Write(link)
out.WriteString("}{")
out.Write(link)
out.WriteString("}")
}
func (options *Latex) CodeSpan(out *bytes.Buffer, text []byte) {
out.WriteString("\\texttt{")
escapeSpecialChars(out, text)
out.WriteString("}")
}
func (options *Latex) DoubleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\textbf{")
out.Write(text)
out.WriteString("}")
}
func (options *Latex) Emphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\textit{")
out.Write(text)
out.WriteString("}")
}
func (options *Latex) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
if bytes.HasPrefix(link, []byte("http://")) || bytes.HasPrefix(link, []byte("https://")) {
// treat it like a link
out.WriteString("\\href{")
out.Write(link)
out.WriteString("}{")
out.Write(alt)
out.WriteString("}")
} else {
out.WriteString("\\includegraphics{")
out.Write(link)
out.WriteString("}")
}
}
func (options *Latex) LineBreak(out *bytes.Buffer) {
out.WriteString(" \\\\\n")
}
func (options *Latex) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
out.WriteString("\\href{")
out.Write(link)
out.WriteString("}{")
out.Write(content)
out.WriteString("}")
}
func (options *Latex) RawHtmlTag(out *bytes.Buffer, tag []byte) {
}
func (options *Latex) TripleEmphasis(out *bytes.Buffer, text []byte) {
out.WriteString("\\textbf{\\textit{")
out.Write(text)
out.WriteString("}}")
}
func (options *Latex) StrikeThrough(out *bytes.Buffer, text []byte) {
out.WriteString("\\sout{")
out.Write(text)
out.WriteString("}")
}
// TODO: this
func (options *Latex) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
}
func needsBackslash(c byte) bool {
for _, r := range []byte("_{}%$&\\~#") {
if c == r {
return true
}
}
return false
}
func escapeSpecialChars(out *bytes.Buffer, text []byte) {
for i := 0; i < len(text); i++ {
// directly copy normal characters
org := i
for i < len(text) && !needsBackslash(text[i]) {
i++
}
if i > org {
out.Write(text[org:i])
}
// escape a character
if i >= len(text) {
break
}
out.WriteByte('\\')
out.WriteByte(text[i])
}
}
func (options *Latex) Entity(out *bytes.Buffer, entity []byte) {
// TODO: convert this into a unicode character or something
out.Write(entity)
}
func (options *Latex) NormalText(out *bytes.Buffer, text []byte) {
escapeSpecialChars(out, text)
}
// header and footer
func (options *Latex) DocumentHeader(out *bytes.Buffer) {
out.WriteString("\\documentclass{article}\n")
out.WriteString("\n")
out.WriteString("\\usepackage{graphicx}\n")
out.WriteString("\\usepackage{listings}\n")
out.WriteString("\\usepackage[margin=1in]{geometry}\n")
out.WriteString("\\usepackage[utf8]{inputenc}\n")
out.WriteString("\\usepackage{verbatim}\n")
out.WriteString("\\usepackage[normalem]{ulem}\n")
out.WriteString("\\usepackage{hyperref}\n")
out.WriteString("\n")
out.WriteString("\\hypersetup{colorlinks,%\n")
out.WriteString(" citecolor=black,%\n")
out.WriteString(" filecolor=black,%\n")
out.WriteString(" linkcolor=black,%\n")
out.WriteString(" urlcolor=black,%\n")
out.WriteString(" pdfstartview=FitH,%\n")
out.WriteString(" breaklinks=true,%\n")
out.WriteString(" pdfauthor={Blackfriday Markdown Processor v")
out.WriteString(VERSION)
out.WriteString("}}\n")
out.WriteString("\n")
out.WriteString("\\newcommand{\\HRule}{\\rule{\\linewidth}{0.5mm}}\n")
out.WriteString("\\addtolength{\\parskip}{0.5\\baselineskip}\n")
out.WriteString("\\parindent=0pt\n")
out.WriteString("\n")
out.WriteString("\\begin{document}\n")
}
func (options *Latex) DocumentFooter(out *bytes.Buffer) {
out.WriteString("\n\\end{document}\n")
}

0
vendor/github.com/russross/blackfriday/.gitignore → vendor/github.com/russross/blackfriday/v2/.gitignore generated vendored
View file

21
vendor/github.com/russross/blackfriday/.travis.yml → vendor/github.com/russross/blackfriday/v2/.travis.yml generated vendored
View file

@ -1,30 +1,17 @@
sudo: false
language: go
go:
- 1.5.4
- 1.6.2
- "1.10.x"
- "1.11.x"
- tip
matrix:
include:
- go: 1.2.2
script:
- go get -t -v ./...
- go test -v -race ./...
- go: 1.3.3
script:
- go get -t -v ./...
- go test -v -race ./...
- go: 1.4.3
script:
- go get -t -v ./...
- go test -v -race ./...
fast_finish: true
allow_failures:
- go: tip
fast_finish: true
install:
- # Do nothing. This is needed to prevent default install action "go get -t -v ./..." from happening here (we want it to happen inside script step).
script:
- go get -t -v ./...
- diff -u <(echo -n) <(gofmt -d -s .)
- go tool vet .
- go test -v -race ./...
- go test -v ./...

0
vendor/github.com/russross/blackfriday/LICENSE.txt → vendor/github.com/russross/blackfriday/v2/LICENSE.txt generated vendored
View file

122
vendor/github.com/russross/blackfriday/README.md → vendor/github.com/russross/blackfriday/v2/README.md generated vendored
View file

@ -1,6 +1,4 @@
Blackfriday
[![Build Status][BuildSVG]][BuildURL]
[![Godoc][GodocV2SVG]][GodocV2URL]
Blackfriday [![Build Status](https://travis-ci.org/russross/blackfriday.svg?branch=master)](https://travis-ci.org/russross/blackfriday)
===========
Blackfriday is a [Markdown][1] processor implemented in [Go][2]. It
@ -18,12 +16,18 @@ It started as a translation from C of [Sundown][3].
Installation
------------
Blackfriday is compatible with any modern Go release. With Go and git installed:
Blackfriday is compatible with any modern Go release. With Go 1.7 and git
installed:
go get -u gopkg.in/russross/blackfriday.v2
go get gopkg.in/russross/blackfriday.v2
will download, compile, and install the package into your `$GOPATH` directory
hierarchy.
will download, compile, and install the package into your `$GOPATH`
directory hierarchy. Alternatively, you can achieve the same if you
import it into a project:
import "gopkg.in/russross/blackfriday.v2"
and `go get` without parameters.
Versions
@ -34,7 +38,7 @@ developed on its own branch: https://github.com/russross/blackfriday/tree/v2 and
documentation is available at
https://godoc.org/gopkg.in/russross/blackfriday.v2.
It is `go get`-able via [gopkg.in][6] at `gopkg.in/russross/blackfriday.v2`,
It is `go get`-able via via [gopkg.in][6] at `gopkg.in/russross/blackfriday.v2`,
but we highly recommend using package management tool like [dep][7] or
[Glide][8] and make use of semantic versioning. With package management you
should import `github.com/russross/blackfriday` and specify that you're using
@ -58,43 +62,9 @@ Potential drawbacks:
v2. See issue [#348](https://github.com/russross/blackfriday/issues/348) for
tracking.
If you are still interested in the legacy `v1`, you can import it from
`github.com/russross/blackfriday`. Documentation for the legacy v1 can be found
here: https://godoc.org/github.com/russross/blackfriday
### Known issue with `dep`
There is a known problem with using Blackfriday v1 _transitively_ and `dep`.
Currently `dep` prioritizes semver versions over anything else, and picks the
latest one, plus it does not apply a `[[constraint]]` specifier to transitively
pulled in packages. So if you're using something that uses Blackfriday v1, but
that something does not use `dep` yet, you will get Blackfriday v2 pulled in and
your first dependency will fail to build.
There are couple of fixes for it, documented here:
https://github.com/golang/dep/blob/master/docs/FAQ.md#how-do-i-constrain-a-transitive-dependencys-version
Meanwhile, `dep` team is working on a more general solution to the constraints
on transitive dependencies problem: https://github.com/golang/dep/issues/1124.
Usage
-----
### v1
For basic usage, it is as simple as getting your input into a byte
slice and calling:
output := blackfriday.MarkdownBasic(input)
This renders it with no extensions enabled. To get a more useful
feature set, use this instead:
output := blackfriday.MarkdownCommon(input)
### v2
For the most sensible markdown processing, it is as simple as getting your input
into a byte slice and calling:
@ -121,7 +91,7 @@ Here's an example of simple usage of Blackfriday together with Bluemonday:
```go
import (
"github.com/microcosm-cc/bluemonday"
"gopkg.in/russross/blackfriday.v2"
"github.com/russross/blackfriday"
)
// ...
@ -129,21 +99,11 @@ unsafe := blackfriday.Run(input)
html := bluemonday.UGCPolicy().SanitizeBytes(unsafe)
```
### Custom options, v1
If you want to customize the set of options, first get a renderer
(currently only the HTML output engine), then use it to
call the more general `Markdown` function. For examples, see the
implementations of `MarkdownBasic` and `MarkdownCommon` in
`markdown.go`.
### Custom options, v2
### Custom options
If you want to customize the set of options, use `blackfriday.WithExtensions`,
`blackfriday.WithRenderer` and `blackfriday.WithRefOverride`.
### `blackfriday-tool`
You can also check out `blackfriday-tool` for a more complete example
of how to use it. Download and install it using:
@ -163,22 +123,6 @@ installed in `$GOPATH/bin`. This is a statically-linked binary that
can be copied to wherever you need it without worrying about
dependencies and library versions.
### Sanitized anchor names
Blackfriday includes an algorithm for creating sanitized anchor names
corresponding to a given input text. This algorithm is used to create
anchors for headings when `EXTENSION_AUTO_HEADER_IDS` is enabled. The
algorithm has a specification, so that other packages can create
compatible anchor names and links to those anchors.
The specification is located at https://godoc.org/github.com/russross/blackfriday#hdr-Sanitized_Anchor_Names.
[`SanitizedAnchorName`](https://godoc.org/github.com/russross/blackfriday#SanitizedAnchorName) exposes this functionality, and can be used to
create compatible links to the anchor names generated by blackfriday.
This algorithm is also implemented in a small standalone package at
[`github.com/shurcooL/sanitized_anchor_name`](https://godoc.org/github.com/shurcooL/sanitized_anchor_name). It can be useful for clients
that want a small package and don't need full functionality of blackfriday.
Features
--------
@ -246,7 +190,7 @@ implements the following extensions:
and supply a language (to make syntax highlighting simple). Just
mark it like this:
``` go
```go
func getTrue() bool {
return true
}
@ -255,21 +199,12 @@ implements the following extensions:
You can use 3 or more backticks to mark the beginning of the
block, and the same number to mark the end of the block.
To preserve classes of fenced code blocks while using the bluemonday
HTML sanitizer, use the following policy:
``` go
p := bluemonday.UGCPolicy()
p.AllowAttrs("class").Matching(regexp.MustCompile("^language-[a-zA-Z0-9]+$")).OnElements("code")
html := p.SanitizeBytes(unsafe)
```
* **Definition lists**. A simple definition list is made of a single-line
term followed by a colon and the definition for that term.
Cat
: Fluffy animal everyone likes
Internet
: Vector of transmission for pictures of cats
@ -280,7 +215,7 @@ implements the following extensions:
end of the document. A footnote looks like this:
This is a footnote.[^1]
[^1]: the footnote text.
* **Autolinking**. Blackfriday can find URLs that have not been
@ -289,10 +224,8 @@ implements the following extensions:
* **Strikethrough**. Use two tildes (`~~`) to mark text that
should be crossed out.
* **Hard line breaks**. With this extension enabled (it is off by
default in the `MarkdownBasic` and `MarkdownCommon` convenience
functions), newlines in the input translate into line breaks in
the output.
* **Hard line breaks**. With this extension enabled newlines in the input
translate into line breaks in the output. This extension is off by default.
* **Smart quotes**. Smartypants-style punctuation substitution is
supported, turning normal double- and single-quote marks into
@ -328,18 +261,20 @@ are a few of note:
* [markdownfmt](https://github.com/shurcooL/markdownfmt): like gofmt,
but for markdown.
* [LaTeX output](https://bitbucket.org/ambrevar/blackfriday-latex):
* [LaTeX output](https://github.com/Ambrevar/Blackfriday-LaTeX):
renders output as LaTeX.
* [Blackfriday-Confluence](https://github.com/kentaro-m/blackfriday-confluence): provides a [Confluence Wiki Markup](https://confluence.atlassian.com/doc/confluence-wiki-markup-251003035.html) renderer.
TODO
Todo
----
* More unit testing
* Improve Unicode support. It does not understand all Unicode
* Improve unicode support. It does not understand all unicode
rules (about what constitutes a letter, a punctuation symbol,
etc.), so it may fail to detect word boundaries correctly in
some instances. It is safe on all UTF-8 input.
some instances. It is safe on all utf-8 input.
License
@ -354,10 +289,3 @@ License
[4]: https://godoc.org/gopkg.in/russross/blackfriday.v2#Parse "Parse func"
[5]: https://github.com/microcosm-cc/bluemonday "Bluemonday"
[6]: https://labix.org/gopkg.in "gopkg.in"
[7]: https://github.com/golang/dep/ "dep"
[8]: https://github.com/Masterminds/glide "Glide"
[BuildSVG]: https://travis-ci.org/russross/blackfriday.svg?branch=master
[BuildURL]: https://travis-ci.org/russross/blackfriday
[GodocV2SVG]: https://godoc.org/gopkg.in/russross/blackfriday.v2?status.svg
[GodocV2URL]: https://godoc.org/gopkg.in/russross/blackfriday.v2

853
vendor/github.com/russross/blackfriday/block.go → vendor/github.com/russross/blackfriday/v2/block.go generated vendored
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18
vendor/github.com/russross/blackfriday/v2/doc.go generated vendored Normal file
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@ -0,0 +1,18 @@
// Package blackfriday is a markdown processor.
//
// It translates plain text with simple formatting rules into an AST, which can
// then be further processed to HTML (provided by Blackfriday itself) or other
// formats (provided by the community).
//
// The simplest way to invoke Blackfriday is to call the Run function. It will
// take a text input and produce a text output in HTML (or other format).
//
// A slightly more sophisticated way to use Blackfriday is to create a Markdown
// processor and to call Parse, which returns a syntax tree for the input
// document. You can leverage Blackfriday's parsing for content extraction from
// markdown documents. You can assign a custom renderer and set various options
// to the Markdown processor.
//
// If you're interested in calling Blackfriday from command line, see
// https://github.com/russross/blackfriday-tool.
package blackfriday

34
vendor/github.com/russross/blackfriday/v2/esc.go generated vendored Normal file
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@ -0,0 +1,34 @@
package blackfriday
import (
"html"
"io"
)
var htmlEscaper = [256][]byte{
'&': []byte("&amp;"),
'<': []byte("&lt;"),
'>': []byte("&gt;"),
'"': []byte("&quot;"),
}
func escapeHTML(w io.Writer, s []byte) {
var start, end int
for end < len(s) {
escSeq := htmlEscaper[s[end]]
if escSeq != nil {
w.Write(s[start:end])
w.Write(escSeq)
start = end + 1
}
end++
}
if start < len(s) && end <= len(s) {
w.Write(s[start:end])
}
}
func escLink(w io.Writer, text []byte) {
unesc := html.UnescapeString(string(text))
escapeHTML(w, []byte(unesc))
}

1
vendor/github.com/russross/blackfriday/v2/go.mod generated vendored Normal file
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@ -0,0 +1 @@
module github.com/russross/blackfriday/v2

949
vendor/github.com/russross/blackfriday/v2/html.go generated vendored Normal file
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@ -0,0 +1,949 @@
//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// HTML rendering backend
//
//
package blackfriday
import (
"bytes"
"fmt"
"io"
"regexp"
"strings"
)
// HTMLFlags control optional behavior of HTML renderer.
type HTMLFlags int
// HTML renderer configuration options.
const (
HTMLFlagsNone HTMLFlags = 0
SkipHTML HTMLFlags = 1 << iota // Skip preformatted HTML blocks
SkipImages // Skip embedded images
SkipLinks // Skip all links
Safelink // Only link to trusted protocols
NofollowLinks // Only link with rel="nofollow"
NoreferrerLinks // Only link with rel="noreferrer"
NoopenerLinks // Only link with rel="noopener"
HrefTargetBlank // Add a blank target
CompletePage // Generate a complete HTML page
UseXHTML // Generate XHTML output instead of HTML
FootnoteReturnLinks // Generate a link at the end of a footnote to return to the source
Smartypants // Enable smart punctuation substitutions
SmartypantsFractions // Enable smart fractions (with Smartypants)
SmartypantsDashes // Enable smart dashes (with Smartypants)
SmartypantsLatexDashes // Enable LaTeX-style dashes (with Smartypants)
SmartypantsAngledQuotes // Enable angled double quotes (with Smartypants) for double quotes rendering
SmartypantsQuotesNBSP // Enable « French guillemets » (with Smartypants)
TOC // Generate a table of contents
)
var (
htmlTagRe = regexp.MustCompile("(?i)^" + htmlTag)
)
const (
htmlTag = "(?:" + openTag + "|" + closeTag + "|" + htmlComment + "|" +
processingInstruction + "|" + declaration + "|" + cdata + ")"
closeTag = "</" + tagName + "\\s*[>]"
openTag = "<" + tagName + attribute + "*" + "\\s*/?>"
attribute = "(?:" + "\\s+" + attributeName + attributeValueSpec + "?)"
attributeValue = "(?:" + unquotedValue + "|" + singleQuotedValue + "|" + doubleQuotedValue + ")"
attributeValueSpec = "(?:" + "\\s*=" + "\\s*" + attributeValue + ")"
attributeName = "[a-zA-Z_:][a-zA-Z0-9:._-]*"
cdata = "<!\\[CDATA\\[[\\s\\S]*?\\]\\]>"
declaration = "<![A-Z]+" + "\\s+[^>]*>"
doubleQuotedValue = "\"[^\"]*\""
htmlComment = "<!---->|<!--(?:-?[^>-])(?:-?[^-])*-->"
processingInstruction = "[<][?].*?[?][>]"
singleQuotedValue = "'[^']*'"
tagName = "[A-Za-z][A-Za-z0-9-]*"
unquotedValue = "[^\"'=<>`\\x00-\\x20]+"
)
// HTMLRendererParameters is a collection of supplementary parameters tweaking
// the behavior of various parts of HTML renderer.
type HTMLRendererParameters struct {
// Prepend this text to each relative URL.
AbsolutePrefix string
// Add this text to each footnote anchor, to ensure uniqueness.
FootnoteAnchorPrefix string
// Show this text inside the <a> tag for a footnote return link, if the
// HTML_FOOTNOTE_RETURN_LINKS flag is enabled. If blank, the string
// <sup>[return]</sup> is used.
FootnoteReturnLinkContents string
// If set, add this text to the front of each Heading ID, to ensure
// uniqueness.
HeadingIDPrefix string
// If set, add this text to the back of each Heading ID, to ensure uniqueness.
HeadingIDSuffix string
// Increase heading levels: if the offset is 1, <h1> becomes <h2> etc.
// Negative offset is also valid.
// Resulting levels are clipped between 1 and 6.
HeadingLevelOffset int
Title string // Document title (used if CompletePage is set)
CSS string // Optional CSS file URL (used if CompletePage is set)
Icon string // Optional icon file URL (used if CompletePage is set)
Flags HTMLFlags // Flags allow customizing this renderer's behavior
}
// HTMLRenderer is a type that implements the Renderer interface for HTML output.
//
// Do not create this directly, instead use the NewHTMLRenderer function.
type HTMLRenderer struct {
HTMLRendererParameters
closeTag string // how to end singleton tags: either " />" or ">"
// Track heading IDs to prevent ID collision in a single generation.
headingIDs map[string]int
lastOutputLen int
disableTags int
sr *SPRenderer
}
const (
xhtmlClose = " />"
htmlClose = ">"
)
// NewHTMLRenderer creates and configures an HTMLRenderer object, which
// satisfies the Renderer interface.
func NewHTMLRenderer(params HTMLRendererParameters) *HTMLRenderer {
// configure the rendering engine
closeTag := htmlClose
if params.Flags&UseXHTML != 0 {
closeTag = xhtmlClose
}
if params.FootnoteReturnLinkContents == "" {
params.FootnoteReturnLinkContents = `<sup>[return]</sup>`
}
return &HTMLRenderer{
HTMLRendererParameters: params,
closeTag: closeTag,
headingIDs: make(map[string]int),
sr: NewSmartypantsRenderer(params.Flags),
}
}
func isHTMLTag(tag []byte, tagname string) bool {
found, _ := findHTMLTagPos(tag, tagname)
return found
}
// Look for a character, but ignore it when it's in any kind of quotes, it
// might be JavaScript
func skipUntilCharIgnoreQuotes(html []byte, start int, char byte) int {
inSingleQuote := false
inDoubleQuote := false
inGraveQuote := false
i := start
for i < len(html) {
switch {
case html[i] == char && !inSingleQuote && !inDoubleQuote && !inGraveQuote:
return i
case html[i] == '\'':
inSingleQuote = !inSingleQuote
case html[i] == '"':
inDoubleQuote = !inDoubleQuote
case html[i] == '`':
inGraveQuote = !inGraveQuote
}
i++
}
return start
}
func findHTMLTagPos(tag []byte, tagname string) (bool, int) {
i := 0
if i < len(tag) && tag[0] != '<' {
return false, -1
}
i++
i = skipSpace(tag, i)
if i < len(tag) && tag[i] == '/' {
i++
}
i = skipSpace(tag, i)
j := 0
for ; i < len(tag); i, j = i+1, j+1 {
if j >= len(tagname) {
break
}
if strings.ToLower(string(tag[i]))[0] != tagname[j] {
return false, -1
}
}
if i == len(tag) {
return false, -1
}
rightAngle := skipUntilCharIgnoreQuotes(tag, i, '>')
if rightAngle >= i {
return true, rightAngle
}
return false, -1
}
func skipSpace(tag []byte, i int) int {
for i < len(tag) && isspace(tag[i]) {
i++
}
return i
}
func isRelativeLink(link []byte) (yes bool) {
// a tag begin with '#'
if link[0] == '#' {
return true
}
// link begin with '/' but not '//', the second maybe a protocol relative link
if len(link) >= 2 && link[0] == '/' && link[1] != '/' {
return true
}
// only the root '/'
if len(link) == 1 && link[0] == '/' {
return true
}
// current directory : begin with "./"
if bytes.HasPrefix(link, []byte("./")) {
return true
}
// parent directory : begin with "../"
if bytes.HasPrefix(link, []byte("../")) {
return true
}
return false
}
func (r *HTMLRenderer) ensureUniqueHeadingID(id string) string {
for count, found := r.headingIDs[id]; found; count, found = r.headingIDs[id] {
tmp := fmt.Sprintf("%s-%d", id, count+1)
if _, tmpFound := r.headingIDs[tmp]; !tmpFound {
r.headingIDs[id] = count + 1
id = tmp
} else {
id = id + "-1"
}
}
if _, found := r.headingIDs[id]; !found {
r.headingIDs[id] = 0
}
return id
}
func (r *HTMLRenderer) addAbsPrefix(link []byte) []byte {
if r.AbsolutePrefix != "" && isRelativeLink(link) && link[0] != '.' {
newDest := r.AbsolutePrefix
if link[0] != '/' {
newDest += "/"
}
newDest += string(link)
return []byte(newDest)
}
return link
}
func appendLinkAttrs(attrs []string, flags HTMLFlags, link []byte) []string {
if isRelativeLink(link) {
return attrs
}
val := []string{}
if flags&NofollowLinks != 0 {
val = append(val, "nofollow")
}
if flags&NoreferrerLinks != 0 {
val = append(val, "noreferrer")
}
if flags&NoopenerLinks != 0 {
val = append(val, "noopener")
}
if flags&HrefTargetBlank != 0 {
attrs = append(attrs, "target=\"_blank\"")
}
if len(val) == 0 {
return attrs
}
attr := fmt.Sprintf("rel=%q", strings.Join(val, " "))
return append(attrs, attr)
}
func isMailto(link []byte) bool {
return bytes.HasPrefix(link, []byte("mailto:"))
}
func needSkipLink(flags HTMLFlags, dest []byte) bool {
if flags&SkipLinks != 0 {
return true
}
return flags&Safelink != 0 && !isSafeLink(dest) && !isMailto(dest)
}
func isSmartypantable(node *Node) bool {
pt := node.Parent.Type
return pt != Link && pt != CodeBlock && pt != Code
}
func appendLanguageAttr(attrs []string, info []byte) []string {
if len(info) == 0 {
return attrs
}
endOfLang := bytes.IndexAny(info, "\t ")
if endOfLang < 0 {
endOfLang = len(info)
}
return append(attrs, fmt.Sprintf("class=\"language-%s\"", info[:endOfLang]))
}
func (r *HTMLRenderer) tag(w io.Writer, name []byte, attrs []string) {
w.Write(name)
if len(attrs) > 0 {
w.Write(spaceBytes)
w.Write([]byte(strings.Join(attrs, " ")))
}
w.Write(gtBytes)
r.lastOutputLen = 1
}
func footnoteRef(prefix string, node *Node) []byte {
urlFrag := prefix + string(slugify(node.Destination))
anchor := fmt.Sprintf(`<a href="#fn:%s">%d</a>`, urlFrag, node.NoteID)
return []byte(fmt.Sprintf(`<sup class="footnote-ref" id="fnref:%s">%s</sup>`, urlFrag, anchor))
}
func footnoteItem(prefix string, slug []byte) []byte {
return []byte(fmt.Sprintf(`<li id="fn:%s%s">`, prefix, slug))
}
func footnoteReturnLink(prefix, returnLink string, slug []byte) []byte {
const format = ` <a class="footnote-return" href="#fnref:%s%s">%s</a>`
return []byte(fmt.Sprintf(format, prefix, slug, returnLink))
}
func itemOpenCR(node *Node) bool {
if node.Prev == nil {
return false
}
ld := node.Parent.ListData
return !ld.Tight && ld.ListFlags&ListTypeDefinition == 0
}
func skipParagraphTags(node *Node) bool {
grandparent := node.Parent.Parent
if grandparent == nil || grandparent.Type != List {
return false
}
tightOrTerm := grandparent.Tight || node.Parent.ListFlags&ListTypeTerm != 0
return grandparent.Type == List && tightOrTerm
}
func cellAlignment(align CellAlignFlags) string {
switch align {
case TableAlignmentLeft:
return "left"
case TableAlignmentRight:
return "right"
case TableAlignmentCenter:
return "center"
default:
return ""
}
}
func (r *HTMLRenderer) out(w io.Writer, text []byte) {
if r.disableTags > 0 {
w.Write(htmlTagRe.ReplaceAll(text, []byte{}))
} else {
w.Write(text)
}
r.lastOutputLen = len(text)
}
func (r *HTMLRenderer) cr(w io.Writer) {
if r.lastOutputLen > 0 {
r.out(w, nlBytes)
}
}
var (
nlBytes = []byte{'\n'}
gtBytes = []byte{'>'}
spaceBytes = []byte{' '}
)
var (
brTag = []byte("<br>")
brXHTMLTag = []byte("<br />")
emTag = []byte("<em>")
emCloseTag = []byte("</em>")
strongTag = []byte("<strong>")
strongCloseTag = []byte("</strong>")
delTag = []byte("<del>")
delCloseTag = []byte("</del>")
ttTag = []byte("<tt>")
ttCloseTag = []byte("</tt>")
aTag = []byte("<a")
aCloseTag = []byte("</a>")
preTag = []byte("<pre>")
preCloseTag = []byte("</pre>")
codeTag = []byte("<code>")
codeCloseTag = []byte("</code>")
pTag = []byte("<p>")
pCloseTag = []byte("</p>")
blockquoteTag = []byte("<blockquote>")
blockquoteCloseTag = []byte("</blockquote>")
hrTag = []byte("<hr>")
hrXHTMLTag = []byte("<hr />")
ulTag = []byte("<ul>")
ulCloseTag = []byte("</ul>")
olTag = []byte("<ol>")
olCloseTag = []byte("</ol>")
dlTag = []byte("<dl>")
dlCloseTag = []byte("</dl>")
liTag = []byte("<li>")
liCloseTag = []byte("</li>")
ddTag = []byte("<dd>")
ddCloseTag = []byte("</dd>")
dtTag = []byte("<dt>")
dtCloseTag = []byte("</dt>")
tableTag = []byte("<table>")
tableCloseTag = []byte("</table>")
tdTag = []byte("<td")
tdCloseTag = []byte("</td>")
thTag = []byte("<th")
thCloseTag = []byte("</th>")
theadTag = []byte("<thead>")
theadCloseTag = []byte("</thead>")
tbodyTag = []byte("<tbody>")
tbodyCloseTag = []byte("</tbody>")
trTag = []byte("<tr>")
trCloseTag = []byte("</tr>")
h1Tag = []byte("<h1")
h1CloseTag = []byte("</h1>")
h2Tag = []byte("<h2")
h2CloseTag = []byte("</h2>")
h3Tag = []byte("<h3")
h3CloseTag = []byte("</h3>")
h4Tag = []byte("<h4")
h4CloseTag = []byte("</h4>")
h5Tag = []byte("<h5")
h5CloseTag = []byte("</h5>")
h6Tag = []byte("<h6")
h6CloseTag = []byte("</h6>")
footnotesDivBytes = []byte("\n<div class=\"footnotes\">\n\n")
footnotesCloseDivBytes = []byte("\n</div>\n")
)
func headingTagsFromLevel(level int) ([]byte, []byte) {
if level <= 1 {
return h1Tag, h1CloseTag
}
switch level {
case 2:
return h2Tag, h2CloseTag
case 3:
return h3Tag, h3CloseTag
case 4:
return h4Tag, h4CloseTag
case 5:
return h5Tag, h5CloseTag
}
return h6Tag, h6CloseTag
}
func (r *HTMLRenderer) outHRTag(w io.Writer) {
if r.Flags&UseXHTML == 0 {
r.out(w, hrTag)
} else {
r.out(w, hrXHTMLTag)
}
}
// RenderNode is a default renderer of a single node of a syntax tree. For
// block nodes it will be called twice: first time with entering=true, second
// time with entering=false, so that it could know when it's working on an open
// tag and when on close. It writes the result to w.
//
// The return value is a way to tell the calling walker to adjust its walk
// pattern: e.g. it can terminate the traversal by returning Terminate. Or it
// can ask the walker to skip a subtree of this node by returning SkipChildren.
// The typical behavior is to return GoToNext, which asks for the usual
// traversal to the next node.
func (r *HTMLRenderer) RenderNode(w io.Writer, node *Node, entering bool) WalkStatus {
attrs := []string{}
switch node.Type {
case Text:
if r.Flags&Smartypants != 0 {
var tmp bytes.Buffer
escapeHTML(&tmp, node.Literal)
r.sr.Process(w, tmp.Bytes())
} else {
if node.Parent.Type == Link {
escLink(w, node.Literal)
} else {
escapeHTML(w, node.Literal)
}
}
case Softbreak:
r.cr(w)
// TODO: make it configurable via out(renderer.softbreak)
case Hardbreak:
if r.Flags&UseXHTML == 0 {
r.out(w, brTag)
} else {
r.out(w, brXHTMLTag)
}
r.cr(w)
case Emph:
if entering {
r.out(w, emTag)
} else {
r.out(w, emCloseTag)
}
case Strong:
if entering {
r.out(w, strongTag)
} else {
r.out(w, strongCloseTag)
}
case Del:
if entering {
r.out(w, delTag)
} else {
r.out(w, delCloseTag)
}
case HTMLSpan:
if r.Flags&SkipHTML != 0 {
break
}
r.out(w, node.Literal)
case Link:
// mark it but don't link it if it is not a safe link: no smartypants
dest := node.LinkData.Destination
if needSkipLink(r.Flags, dest) {
if entering {
r.out(w, ttTag)
} else {
r.out(w, ttCloseTag)
}
} else {
if entering {
dest = r.addAbsPrefix(dest)
var hrefBuf bytes.Buffer
hrefBuf.WriteString("href=\"")
escLink(&hrefBuf, dest)
hrefBuf.WriteByte('"')
attrs = append(attrs, hrefBuf.String())
if node.NoteID != 0 {
r.out(w, footnoteRef(r.FootnoteAnchorPrefix, node))
break
}
attrs = appendLinkAttrs(attrs, r.Flags, dest)
if len(node.LinkData.Title) > 0 {
var titleBuff bytes.Buffer
titleBuff.WriteString("title=\"")
escapeHTML(&titleBuff, node.LinkData.Title)
titleBuff.WriteByte('"')
attrs = append(attrs, titleBuff.String())
}
r.tag(w, aTag, attrs)
} else {
if node.NoteID != 0 {
break
}
r.out(w, aCloseTag)
}
}
case Image:
if r.Flags&SkipImages != 0 {
return SkipChildren
}
if entering {
dest := node.LinkData.Destination
dest = r.addAbsPrefix(dest)
if r.disableTags == 0 {
//if options.safe && potentiallyUnsafe(dest) {
//out(w, `<img src="" alt="`)
//} else {
r.out(w, []byte(`<img src="`))
escLink(w, dest)
r.out(w, []byte(`" alt="`))
//}
}
r.disableTags++
} else {
r.disableTags--
if r.disableTags == 0 {
if node.LinkData.Title != nil {
r.out(w, []byte(`" title="`))
escapeHTML(w, node.LinkData.Title)
}
r.out(w, []byte(`" />`))
}
}
case Code:
r.out(w, codeTag)
escapeHTML(w, node.Literal)
r.out(w, codeCloseTag)
case Document:
break
case Paragraph:
if skipParagraphTags(node) {
break
}
if entering {
// TODO: untangle this clusterfuck about when the newlines need
// to be added and when not.
if node.Prev != nil {
switch node.Prev.Type {
case HTMLBlock, List, Paragraph, Heading, CodeBlock, BlockQuote, HorizontalRule:
r.cr(w)
}
}
if node.Parent.Type == BlockQuote && node.Prev == nil {
r.cr(w)
}
r.out(w, pTag)
} else {
r.out(w, pCloseTag)
if !(node.Parent.Type == Item && node.Next == nil) {
r.cr(w)
}
}
case BlockQuote:
if entering {
r.cr(w)
r.out(w, blockquoteTag)
} else {
r.out(w, blockquoteCloseTag)
r.cr(w)
}
case HTMLBlock:
if r.Flags&SkipHTML != 0 {
break
}
r.cr(w)
r.out(w, node.Literal)
r.cr(w)
case Heading:
headingLevel := r.HTMLRendererParameters.HeadingLevelOffset + node.Level
openTag, closeTag := headingTagsFromLevel(headingLevel)
if entering {
if node.IsTitleblock {
attrs = append(attrs, `class="title"`)
}
if node.HeadingID != "" {
id := r.ensureUniqueHeadingID(node.HeadingID)
if r.HeadingIDPrefix != "" {
id = r.HeadingIDPrefix + id
}
if r.HeadingIDSuffix != "" {
id = id + r.HeadingIDSuffix
}
attrs = append(attrs, fmt.Sprintf(`id="%s"`, id))
}
r.cr(w)
r.tag(w, openTag, attrs)
} else {
r.out(w, closeTag)
if !(node.Parent.Type == Item && node.Next == nil) {
r.cr(w)
}
}
case HorizontalRule:
r.cr(w)
r.outHRTag(w)
r.cr(w)
case List:
openTag := ulTag
closeTag := ulCloseTag
if node.ListFlags&ListTypeOrdered != 0 {
openTag = olTag
closeTag = olCloseTag
}
if node.ListFlags&ListTypeDefinition != 0 {
openTag = dlTag
closeTag = dlCloseTag
}
if entering {
if node.IsFootnotesList {
r.out(w, footnotesDivBytes)
r.outHRTag(w)
r.cr(w)
}
r.cr(w)
if node.Parent.Type == Item && node.Parent.Parent.Tight {
r.cr(w)
}
r.tag(w, openTag[:len(openTag)-1], attrs)
r.cr(w)
} else {
r.out(w, closeTag)
//cr(w)
//if node.parent.Type != Item {
// cr(w)
//}
if node.Parent.Type == Item && node.Next != nil {
r.cr(w)
}
if node.Parent.Type == Document || node.Parent.Type == BlockQuote {
r.cr(w)
}
if node.IsFootnotesList {
r.out(w, footnotesCloseDivBytes)
}
}
case Item:
openTag := liTag
closeTag := liCloseTag
if node.ListFlags&ListTypeDefinition != 0 {
openTag = ddTag
closeTag = ddCloseTag
}
if node.ListFlags&ListTypeTerm != 0 {
openTag = dtTag
closeTag = dtCloseTag
}
if entering {
if itemOpenCR(node) {
r.cr(w)
}
if node.ListData.RefLink != nil {
slug := slugify(node.ListData.RefLink)
r.out(w, footnoteItem(r.FootnoteAnchorPrefix, slug))
break
}
r.out(w, openTag)
} else {
if node.ListData.RefLink != nil {
slug := slugify(node.ListData.RefLink)
if r.Flags&FootnoteReturnLinks != 0 {
r.out(w, footnoteReturnLink(r.FootnoteAnchorPrefix, r.FootnoteReturnLinkContents, slug))
}
}
r.out(w, closeTag)
r.cr(w)
}
case CodeBlock:
attrs = appendLanguageAttr(attrs, node.Info)
r.cr(w)
r.out(w, preTag)
r.tag(w, codeTag[:len(codeTag)-1], attrs)
escapeHTML(w, node.Literal)
r.out(w, codeCloseTag)
r.out(w, preCloseTag)
if node.Parent.Type != Item {
r.cr(w)
}
case Table:
if entering {
r.cr(w)
r.out(w, tableTag)
} else {
r.out(w, tableCloseTag)
r.cr(w)
}
case TableCell:
openTag := tdTag
closeTag := tdCloseTag
if node.IsHeader {
openTag = thTag
closeTag = thCloseTag
}
if entering {
align := cellAlignment(node.Align)
if align != "" {
attrs = append(attrs, fmt.Sprintf(`align="%s"`, align))
}
if node.Prev == nil {
r.cr(w)
}
r.tag(w, openTag, attrs)
} else {
r.out(w, closeTag)
r.cr(w)
}
case TableHead:
if entering {
r.cr(w)
r.out(w, theadTag)
} else {
r.out(w, theadCloseTag)
r.cr(w)
}
case TableBody:
if entering {
r.cr(w)
r.out(w, tbodyTag)
// XXX: this is to adhere to a rather silly test. Should fix test.
if node.FirstChild == nil {
r.cr(w)
}
} else {
r.out(w, tbodyCloseTag)
r.cr(w)
}
case TableRow:
if entering {
r.cr(w)
r.out(w, trTag)
} else {
r.out(w, trCloseTag)
r.cr(w)
}
default:
panic("Unknown node type " + node.Type.String())
}
return GoToNext
}
// RenderHeader writes HTML document preamble and TOC if requested.
func (r *HTMLRenderer) RenderHeader(w io.Writer, ast *Node) {
r.writeDocumentHeader(w)
if r.Flags&TOC != 0 {
r.writeTOC(w, ast)
}
}
// RenderFooter writes HTML document footer.
func (r *HTMLRenderer) RenderFooter(w io.Writer, ast *Node) {
if r.Flags&CompletePage == 0 {
return
}
io.WriteString(w, "\n</body>\n</html>\n")
}
func (r *HTMLRenderer) writeDocumentHeader(w io.Writer) {
if r.Flags&CompletePage == 0 {
return
}
ending := ""
if r.Flags&UseXHTML != 0 {
io.WriteString(w, "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" ")
io.WriteString(w, "\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n")
io.WriteString(w, "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n")
ending = " /"
} else {
io.WriteString(w, "<!DOCTYPE html>\n")
io.WriteString(w, "<html>\n")
}
io.WriteString(w, "<head>\n")
io.WriteString(w, " <title>")
if r.Flags&Smartypants != 0 {
r.sr.Process(w, []byte(r.Title))
} else {
escapeHTML(w, []byte(r.Title))
}
io.WriteString(w, "</title>\n")
io.WriteString(w, " <meta name=\"GENERATOR\" content=\"Blackfriday Markdown Processor v")
io.WriteString(w, Version)
io.WriteString(w, "\"")
io.WriteString(w, ending)
io.WriteString(w, ">\n")
io.WriteString(w, " <meta charset=\"utf-8\"")
io.WriteString(w, ending)
io.WriteString(w, ">\n")
if r.CSS != "" {
io.WriteString(w, " <link rel=\"stylesheet\" type=\"text/css\" href=\"")
escapeHTML(w, []byte(r.CSS))
io.WriteString(w, "\"")
io.WriteString(w, ending)
io.WriteString(w, ">\n")
}
if r.Icon != "" {
io.WriteString(w, " <link rel=\"icon\" type=\"image/x-icon\" href=\"")
escapeHTML(w, []byte(r.Icon))
io.WriteString(w, "\"")
io.WriteString(w, ending)
io.WriteString(w, ">\n")
}
io.WriteString(w, "</head>\n")
io.WriteString(w, "<body>\n\n")
}
func (r *HTMLRenderer) writeTOC(w io.Writer, ast *Node) {
buf := bytes.Buffer{}
inHeading := false
tocLevel := 0
headingCount := 0
ast.Walk(func(node *Node, entering bool) WalkStatus {
if node.Type == Heading && !node.HeadingData.IsTitleblock {
inHeading = entering
if entering {
node.HeadingID = fmt.Sprintf("toc_%d", headingCount)
if node.Level == tocLevel {
buf.WriteString("</li>\n\n<li>")
} else if node.Level < tocLevel {
for node.Level < tocLevel {
tocLevel--
buf.WriteString("</li>\n</ul>")
}
buf.WriteString("</li>\n\n<li>")
} else {
for node.Level > tocLevel {
tocLevel++
buf.WriteString("\n<ul>\n<li>")
}
}
fmt.Fprintf(&buf, `<a href="#toc_%d">`, headingCount)
headingCount++
} else {
buf.WriteString("</a>")
}
return GoToNext
}
if inHeading {
return r.RenderNode(&buf, node, entering)
}
return GoToNext
})
for ; tocLevel > 0; tocLevel-- {
buf.WriteString("</li>\n</ul>")
}
if buf.Len() > 0 {
io.WriteString(w, "<nav>\n")
w.Write(buf.Bytes())
io.WriteString(w, "\n\n</nav>\n")
}
r.lastOutputLen = buf.Len()
}

570
vendor/github.com/russross/blackfriday/inline.go → vendor/github.com/russross/blackfriday/v2/inline.go generated vendored
View file

File diff suppressed because it is too large Load diff

685
vendor/github.com/russross/blackfriday/markdown.go → vendor/github.com/russross/blackfriday/v2/markdown.go generated vendored
View file

@ -1,103 +1,93 @@
//
// Blackfriday Markdown Processor
// Available at http://github.com/russross/blackfriday
//
// Copyright © 2011 Russ Ross <russ@russross.com>.
// Distributed under the Simplified BSD License.
// See README.md for details.
//
//
//
// Markdown parsing and processing
//
//
package blackfriday
import (
"bytes"
"fmt"
"io"
"strings"
"unicode/utf8"
)
const VERSION = "1.5"
//
// Markdown parsing and processing
//
// Version string of the package. Appears in the rendered document when
// CompletePage flag is on.
const Version = "2.0"
// Extensions is a bitwise or'ed collection of enabled Blackfriday's
// extensions.
type Extensions int
// These are the supported markdown parsing extensions.
// OR these values together to select multiple extensions.
const (
EXTENSION_NO_INTRA_EMPHASIS = 1 << iota // ignore emphasis markers inside words
EXTENSION_TABLES // render tables
EXTENSION_FENCED_CODE // render fenced code blocks
EXTENSION_AUTOLINK // detect embedded URLs that are not explicitly marked
EXTENSION_STRIKETHROUGH // strikethrough text using ~~test~~
EXTENSION_LAX_HTML_BLOCKS // loosen up HTML block parsing rules
EXTENSION_SPACE_HEADERS // be strict about prefix header rules
EXTENSION_HARD_LINE_BREAK // translate newlines into line breaks
EXTENSION_TAB_SIZE_EIGHT // expand tabs to eight spaces instead of four
EXTENSION_FOOTNOTES // Pandoc-style footnotes
EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK // No need to insert an empty line to start a (code, quote, ordered list, unordered list) block
EXTENSION_HEADER_IDS // specify header IDs with {#id}
EXTENSION_TITLEBLOCK // Titleblock ala pandoc
EXTENSION_AUTO_HEADER_IDS // Create the header ID from the text
EXTENSION_BACKSLASH_LINE_BREAK // translate trailing backslashes into line breaks
EXTENSION_DEFINITION_LISTS // render definition lists
EXTENSION_JOIN_LINES // delete newline and join lines
NoExtensions Extensions = 0
NoIntraEmphasis Extensions = 1 << iota // Ignore emphasis markers inside words
Tables // Render tables
FencedCode // Render fenced code blocks
Autolink // Detect embedded URLs that are not explicitly marked
Strikethrough // Strikethrough text using ~~test~~
LaxHTMLBlocks // Loosen up HTML block parsing rules
SpaceHeadings // Be strict about prefix heading rules
HardLineBreak // Translate newlines into line breaks
TabSizeEight // Expand tabs to eight spaces instead of four
Footnotes // Pandoc-style footnotes
NoEmptyLineBeforeBlock // No need to insert an empty line to start a (code, quote, ordered list, unordered list) block
HeadingIDs // specify heading IDs with {#id}
Titleblock // Titleblock ala pandoc
AutoHeadingIDs // Create the heading ID from the text
BackslashLineBreak // Translate trailing backslashes into line breaks
DefinitionLists // Render definition lists
commonHtmlFlags = 0 |
HTML_USE_XHTML |
HTML_USE_SMARTYPANTS |
HTML_SMARTYPANTS_FRACTIONS |
HTML_SMARTYPANTS_DASHES |
HTML_SMARTYPANTS_LATEX_DASHES
CommonHTMLFlags HTMLFlags = UseXHTML | Smartypants |
SmartypantsFractions | SmartypantsDashes | SmartypantsLatexDashes
commonExtensions = 0 |
EXTENSION_NO_INTRA_EMPHASIS |
EXTENSION_TABLES |
EXTENSION_FENCED_CODE |
EXTENSION_AUTOLINK |
EXTENSION_STRIKETHROUGH |
EXTENSION_SPACE_HEADERS |
EXTENSION_HEADER_IDS |
EXTENSION_BACKSLASH_LINE_BREAK |
EXTENSION_DEFINITION_LISTS
CommonExtensions Extensions = NoIntraEmphasis | Tables | FencedCode |
Autolink | Strikethrough | SpaceHeadings | HeadingIDs |
BackslashLineBreak | DefinitionLists
)
// These are the possible flag values for the link renderer.
// Only a single one of these values will be used; they are not ORed together.
// These are mostly of interest if you are writing a new output format.
const (
LINK_TYPE_NOT_AUTOLINK = iota
LINK_TYPE_NORMAL
LINK_TYPE_EMAIL
)
// ListType contains bitwise or'ed flags for list and list item objects.
type ListType int
// These are the possible flag values for the ListItem renderer.
// Multiple flag values may be ORed together.
// These are mostly of interest if you are writing a new output format.
const (
LIST_TYPE_ORDERED = 1 << iota
LIST_TYPE_DEFINITION
LIST_TYPE_TERM
LIST_ITEM_CONTAINS_BLOCK
LIST_ITEM_BEGINNING_OF_LIST
LIST_ITEM_END_OF_LIST
ListTypeOrdered ListType = 1 << iota
ListTypeDefinition
ListTypeTerm
ListItemContainsBlock
ListItemBeginningOfList // TODO: figure out if this is of any use now
ListItemEndOfList
)
// CellAlignFlags holds a type of alignment in a table cell.
type CellAlignFlags int
// These are the possible flag values for the table cell renderer.
// Only a single one of these values will be used; they are not ORed together.
// These are mostly of interest if you are writing a new output format.
const (
TABLE_ALIGNMENT_LEFT = 1 << iota
TABLE_ALIGNMENT_RIGHT
TABLE_ALIGNMENT_CENTER = (TABLE_ALIGNMENT_LEFT | TABLE_ALIGNMENT_RIGHT)
TableAlignmentLeft CellAlignFlags = 1 << iota
TableAlignmentRight
TableAlignmentCenter = (TableAlignmentLeft | TableAlignmentRight)
)
// The size of a tab stop.
const (
TAB_SIZE_DEFAULT = 4
TAB_SIZE_EIGHT = 8
TabSizeDefault = 4
TabSizeDouble = 8
)
// blockTags is a set of tags that are recognized as HTML block tags.
@ -145,86 +135,66 @@ var blockTags = map[string]struct{}{
"video": {},
}
// Renderer is the rendering interface.
// This is mostly of interest if you are implementing a new rendering format.
// Renderer is the rendering interface. This is mostly of interest if you are
// implementing a new rendering format.
//
// When a byte slice is provided, it contains the (rendered) contents of the
// element.
//
// When a callback is provided instead, it will write the contents of the
// respective element directly to the output buffer and return true on success.
// If the callback returns false, the rendering function should reset the
// output buffer as though it had never been called.
//
// Currently Html and Latex implementations are provided
// Only an HTML implementation is provided in this repository, see the README
// for external implementations.
type Renderer interface {
// block-level callbacks
BlockCode(out *bytes.Buffer, text []byte, infoString string)
BlockQuote(out *bytes.Buffer, text []byte)
BlockHtml(out *bytes.Buffer, text []byte)
Header(out *bytes.Buffer, text func() bool, level int, id string)
HRule(out *bytes.Buffer)
List(out *bytes.Buffer, text func() bool, flags int)
ListItem(out *bytes.Buffer, text []byte, flags int)
Paragraph(out *bytes.Buffer, text func() bool)
Table(out *bytes.Buffer, header []byte, body []byte, columnData []int)
TableRow(out *bytes.Buffer, text []byte)
TableHeaderCell(out *bytes.Buffer, text []byte, flags int)
TableCell(out *bytes.Buffer, text []byte, flags int)
Footnotes(out *bytes.Buffer, text func() bool)
FootnoteItem(out *bytes.Buffer, name, text []byte, flags int)
TitleBlock(out *bytes.Buffer, text []byte)
// RenderNode is the main rendering method. It will be called once for
// every leaf node and twice for every non-leaf node (first with
// entering=true, then with entering=false). The method should write its
// rendition of the node to the supplied writer w.
RenderNode(w io.Writer, node *Node, entering bool) WalkStatus
// Span-level callbacks
AutoLink(out *bytes.Buffer, link []byte, kind int)
CodeSpan(out *bytes.Buffer, text []byte)
DoubleEmphasis(out *bytes.Buffer, text []byte)
Emphasis(out *bytes.Buffer, text []byte)
Image(out *bytes.Buffer, link []byte, title []byte, alt []byte)
LineBreak(out *bytes.Buffer)
Link(out *bytes.Buffer, link []byte, title []byte, content []byte)
RawHtmlTag(out *bytes.Buffer, tag []byte)
TripleEmphasis(out *bytes.Buffer, text []byte)
StrikeThrough(out *bytes.Buffer, text []byte)
FootnoteRef(out *bytes.Buffer, ref []byte, id int)
// RenderHeader is a method that allows the renderer to produce some
// content preceding the main body of the output document. The header is
// understood in the broad sense here. For example, the default HTML
// renderer will write not only the HTML document preamble, but also the
// table of contents if it was requested.
//
// The method will be passed an entire document tree, in case a particular
// implementation needs to inspect it to produce output.
//
// The output should be written to the supplied writer w. If your
// implementation has no header to write, supply an empty implementation.
RenderHeader(w io.Writer, ast *Node)
// Low-level callbacks
Entity(out *bytes.Buffer, entity []byte)
NormalText(out *bytes.Buffer, text []byte)
// Header and footer
DocumentHeader(out *bytes.Buffer)
DocumentFooter(out *bytes.Buffer)
GetFlags() int
// RenderFooter is a symmetric counterpart of RenderHeader.
RenderFooter(w io.Writer, ast *Node)
}
// Callback functions for inline parsing. One such function is defined
// for each character that triggers a response when parsing inline data.
type inlineParser func(p *parser, out *bytes.Buffer, data []byte, offset int) int
type inlineParser func(p *Markdown, data []byte, offset int) (int, *Node)
// Parser holds runtime state used by the parser.
// This is constructed by the Markdown function.
type parser struct {
r Renderer
refOverride ReferenceOverrideFunc
refs map[string]*reference
inlineCallback [256]inlineParser
flags int
nesting int
maxNesting int
insideLink bool
// Markdown is a type that holds extensions and the runtime state used by
// Parse, and the renderer. You can not use it directly, construct it with New.
type Markdown struct {
renderer Renderer
referenceOverride ReferenceOverrideFunc
refs map[string]*reference
inlineCallback [256]inlineParser
extensions Extensions
nesting int
maxNesting int
insideLink bool
// Footnotes need to be ordered as well as available to quickly check for
// presence. If a ref is also a footnote, it's stored both in refs and here
// in notes. Slice is nil if footnotes not enabled.
notes []*reference
notesRecord map[string]struct{}
notes []*reference
doc *Node
tip *Node // = doc
oldTip *Node
lastMatchedContainer *Node // = doc
allClosed bool
}
func (p *parser) getRef(refid string) (ref *reference, found bool) {
if p.refOverride != nil {
r, overridden := p.refOverride(refid)
func (p *Markdown) getRef(refid string) (ref *reference, found bool) {
if p.referenceOverride != nil {
r, overridden := p.referenceOverride(refid)
if overridden {
if r == nil {
return nil, false
@ -232,7 +202,7 @@ func (p *parser) getRef(refid string) (ref *reference, found bool) {
return &reference{
link: []byte(r.Link),
title: []byte(r.Title),
noteId: 0,
noteID: 0,
hasBlock: false,
text: []byte(r.Text)}, true
}
@ -242,9 +212,34 @@ func (p *parser) getRef(refid string) (ref *reference, found bool) {
return ref, found
}
func (p *parser) isFootnote(ref *reference) bool {
_, ok := p.notesRecord[string(ref.link)]
return ok
func (p *Markdown) finalize(block *Node) {
above := block.Parent
block.open = false
p.tip = above
}
func (p *Markdown) addChild(node NodeType, offset uint32) *Node {
return p.addExistingChild(NewNode(node), offset)
}
func (p *Markdown) addExistingChild(node *Node, offset uint32) *Node {
for !p.tip.canContain(node.Type) {
p.finalize(p.tip)
}
p.tip.AppendChild(node)
p.tip = node
return node
}
func (p *Markdown) closeUnmatchedBlocks() {
if !p.allClosed {
for p.oldTip != p.lastMatchedContainer {
parent := p.oldTip.Parent
p.finalize(p.oldTip)
p.oldTip = parent
}
p.allClosed = true
}
}
//
@ -271,102 +266,27 @@ type Reference struct {
// See the documentation in Options for more details on use-case.
type ReferenceOverrideFunc func(reference string) (ref *Reference, overridden bool)
// Options represents configurable overrides and callbacks (in addition to the
// extension flag set) for configuring a Markdown parse.
type Options struct {
// Extensions is a flag set of bit-wise ORed extension bits. See the
// EXTENSION_* flags defined in this package.
Extensions int
// ReferenceOverride is an optional function callback that is called every
// time a reference is resolved.
//
// In Markdown, the link reference syntax can be made to resolve a link to
// a reference instead of an inline URL, in one of the following ways:
//
// * [link text][refid]
// * [refid][]
//
// Usually, the refid is defined at the bottom of the Markdown document. If
// this override function is provided, the refid is passed to the override
// function first, before consulting the defined refids at the bottom. If
// the override function indicates an override did not occur, the refids at
// the bottom will be used to fill in the link details.
ReferenceOverride ReferenceOverrideFunc
}
// MarkdownBasic is a convenience function for simple rendering.
// It processes markdown input with no extensions enabled.
func MarkdownBasic(input []byte) []byte {
// set up the HTML renderer
htmlFlags := HTML_USE_XHTML
renderer := HtmlRenderer(htmlFlags, "", "")
// set up the parser
return MarkdownOptions(input, renderer, Options{Extensions: 0})
}
// Call Markdown with most useful extensions enabled
// MarkdownCommon is a convenience function for simple rendering.
// It processes markdown input with common extensions enabled, including:
//
// * Smartypants processing with smart fractions and LaTeX dashes
//
// * Intra-word emphasis suppression
//
// * Tables
//
// * Fenced code blocks
//
// * Autolinking
//
// * Strikethrough support
//
// * Strict header parsing
//
// * Custom Header IDs
func MarkdownCommon(input []byte) []byte {
// set up the HTML renderer
renderer := HtmlRenderer(commonHtmlFlags, "", "")
return MarkdownOptions(input, renderer, Options{
Extensions: commonExtensions})
}
// Markdown is the main rendering function.
// It parses and renders a block of markdown-encoded text.
// The supplied Renderer is used to format the output, and extensions dictates
// which non-standard extensions are enabled.
//
// To use the supplied Html or LaTeX renderers, see HtmlRenderer and
// LatexRenderer, respectively.
func Markdown(input []byte, renderer Renderer, extensions int) []byte {
return MarkdownOptions(input, renderer, Options{
Extensions: extensions})
}
// MarkdownOptions is just like Markdown but takes additional options through
// the Options struct.
func MarkdownOptions(input []byte, renderer Renderer, opts Options) []byte {
// no point in parsing if we can't render
if renderer == nil {
return nil
// New constructs a Markdown processor. You can use the same With* functions as
// for Run() to customize parser's behavior and the renderer.
func New(opts ...Option) *Markdown {
var p Markdown
for _, opt := range opts {
opt(&p)
}
extensions := opts.Extensions
// fill in the render structure
p := new(parser)
p.r = renderer
p.flags = extensions
p.refOverride = opts.ReferenceOverride
p.refs = make(map[string]*reference)
p.maxNesting = 16
p.insideLink = false
docNode := NewNode(Document)
p.doc = docNode
p.tip = docNode
p.oldTip = docNode
p.lastMatchedContainer = docNode
p.allClosed = true
// register inline parsers
p.inlineCallback[' '] = maybeLineBreak
p.inlineCallback['*'] = emphasis
p.inlineCallback['_'] = emphasis
if extensions&EXTENSION_STRIKETHROUGH != 0 {
if p.extensions&Strikethrough != 0 {
p.inlineCallback['~'] = emphasis
}
p.inlineCallback['`'] = codeSpan
@ -375,116 +295,166 @@ func MarkdownOptions(input []byte, renderer Renderer, opts Options) []byte {
p.inlineCallback['<'] = leftAngle
p.inlineCallback['\\'] = escape
p.inlineCallback['&'] = entity
if extensions&EXTENSION_AUTOLINK != 0 {
p.inlineCallback[':'] = autoLink
p.inlineCallback['!'] = maybeImage
p.inlineCallback['^'] = maybeInlineFootnote
if p.extensions&Autolink != 0 {
p.inlineCallback['h'] = maybeAutoLink
p.inlineCallback['m'] = maybeAutoLink
p.inlineCallback['f'] = maybeAutoLink
p.inlineCallback['H'] = maybeAutoLink
p.inlineCallback['M'] = maybeAutoLink
p.inlineCallback['F'] = maybeAutoLink
}
if extensions&EXTENSION_FOOTNOTES != 0 {
if p.extensions&Footnotes != 0 {
p.notes = make([]*reference, 0)
p.notesRecord = make(map[string]struct{})
}
first := firstPass(p, input)
second := secondPass(p, first)
return second
return &p
}
// first pass:
// - normalize newlines
// - extract references (outside of fenced code blocks)
// - expand tabs (outside of fenced code blocks)
// - copy everything else
func firstPass(p *parser, input []byte) []byte {
var out bytes.Buffer
tabSize := TAB_SIZE_DEFAULT
if p.flags&EXTENSION_TAB_SIZE_EIGHT != 0 {
tabSize = TAB_SIZE_EIGHT
// Option customizes the Markdown processor's default behavior.
type Option func(*Markdown)
// WithRenderer allows you to override the default renderer.
func WithRenderer(r Renderer) Option {
return func(p *Markdown) {
p.renderer = r
}
beg := 0
lastFencedCodeBlockEnd := 0
for beg < len(input) {
// Find end of this line, then process the line.
end := beg
for end < len(input) && input[end] != '\n' && input[end] != '\r' {
end++
}
if p.flags&EXTENSION_FENCED_CODE != 0 {
// track fenced code block boundaries to suppress tab expansion
// and reference extraction inside them:
if beg >= lastFencedCodeBlockEnd {
if i := p.fencedCodeBlock(&out, input[beg:], false); i > 0 {
lastFencedCodeBlockEnd = beg + i
}
}
}
// add the line body if present
if end > beg {
if end < lastFencedCodeBlockEnd { // Do not expand tabs while inside fenced code blocks.
out.Write(input[beg:end])
} else if refEnd := isReference(p, input[beg:], tabSize); refEnd > 0 {
beg += refEnd
continue
} else {
expandTabs(&out, input[beg:end], tabSize)
}
}
if end < len(input) && input[end] == '\r' {
end++
}
if end < len(input) && input[end] == '\n' {
end++
}
out.WriteByte('\n')
beg = end
}
// empty input?
if out.Len() == 0 {
out.WriteByte('\n')
}
return out.Bytes()
}
// second pass: actual rendering
func secondPass(p *parser, input []byte) []byte {
var output bytes.Buffer
// WithExtensions allows you to pick some of the many extensions provided by
// Blackfriday. You can bitwise OR them.
func WithExtensions(e Extensions) Option {
return func(p *Markdown) {
p.extensions = e
}
}
p.r.DocumentHeader(&output)
p.block(&output, input)
if p.flags&EXTENSION_FOOTNOTES != 0 && len(p.notes) > 0 {
p.r.Footnotes(&output, func() bool {
flags := LIST_ITEM_BEGINNING_OF_LIST
for i := 0; i < len(p.notes); i += 1 {
ref := p.notes[i]
var buf bytes.Buffer
if ref.hasBlock {
flags |= LIST_ITEM_CONTAINS_BLOCK
p.block(&buf, ref.title)
} else {
p.inline(&buf, ref.title)
}
p.r.FootnoteItem(&output, ref.link, buf.Bytes(), flags)
flags &^= LIST_ITEM_BEGINNING_OF_LIST | LIST_ITEM_CONTAINS_BLOCK
}
return true
// WithNoExtensions turns off all extensions and custom behavior.
func WithNoExtensions() Option {
return func(p *Markdown) {
p.extensions = NoExtensions
p.renderer = NewHTMLRenderer(HTMLRendererParameters{
Flags: HTMLFlagsNone,
})
}
}
p.r.DocumentFooter(&output)
if p.nesting != 0 {
panic("Nesting level did not end at zero")
// WithRefOverride sets an optional function callback that is called every
// time a reference is resolved.
//
// In Markdown, the link reference syntax can be made to resolve a link to
// a reference instead of an inline URL, in one of the following ways:
//
// * [link text][refid]
// * [refid][]
//
// Usually, the refid is defined at the bottom of the Markdown document. If
// this override function is provided, the refid is passed to the override
// function first, before consulting the defined refids at the bottom. If
// the override function indicates an override did not occur, the refids at
// the bottom will be used to fill in the link details.
func WithRefOverride(o ReferenceOverrideFunc) Option {
return func(p *Markdown) {
p.referenceOverride = o
}
}
return output.Bytes()
// Run is the main entry point to Blackfriday. It parses and renders a
// block of markdown-encoded text.
//
// The simplest invocation of Run takes one argument, input:
// output := Run(input)
// This will parse the input with CommonExtensions enabled and render it with
// the default HTMLRenderer (with CommonHTMLFlags).
//
// Variadic arguments opts can customize the default behavior. Since Markdown
// type does not contain exported fields, you can not use it directly. Instead,
// use the With* functions. For example, this will call the most basic
// functionality, with no extensions:
// output := Run(input, WithNoExtensions())
//
// You can use any number of With* arguments, even contradicting ones. They
// will be applied in order of appearance and the latter will override the
// former:
// output := Run(input, WithNoExtensions(), WithExtensions(exts),
// WithRenderer(yourRenderer))
func Run(input []byte, opts ...Option) []byte {
r := NewHTMLRenderer(HTMLRendererParameters{
Flags: CommonHTMLFlags,
})
optList := []Option{WithRenderer(r), WithExtensions(CommonExtensions)}
optList = append(optList, opts...)
parser := New(optList...)
ast := parser.Parse(input)
var buf bytes.Buffer
parser.renderer.RenderHeader(&buf, ast)
ast.Walk(func(node *Node, entering bool) WalkStatus {
return parser.renderer.RenderNode(&buf, node, entering)
})
parser.renderer.RenderFooter(&buf, ast)
return buf.Bytes()
}
// Parse is an entry point to the parsing part of Blackfriday. It takes an
// input markdown document and produces a syntax tree for its contents. This
// tree can then be rendered with a default or custom renderer, or
// analyzed/transformed by the caller to whatever non-standard needs they have.
// The return value is the root node of the syntax tree.
func (p *Markdown) Parse(input []byte) *Node {
p.block(input)
// Walk the tree and finish up some of unfinished blocks
for p.tip != nil {
p.finalize(p.tip)
}
// Walk the tree again and process inline markdown in each block
p.doc.Walk(func(node *Node, entering bool) WalkStatus {
if node.Type == Paragraph || node.Type == Heading || node.Type == TableCell {
p.inline(node, node.content)
node.content = nil
}
return GoToNext
})
p.parseRefsToAST()
return p.doc
}
func (p *Markdown) parseRefsToAST() {
if p.extensions&Footnotes == 0 || len(p.notes) == 0 {
return
}
p.tip = p.doc
block := p.addBlock(List, nil)
block.IsFootnotesList = true
block.ListFlags = ListTypeOrdered
flags := ListItemBeginningOfList
// Note: this loop is intentionally explicit, not range-form. This is
// because the body of the loop will append nested footnotes to p.notes and
// we need to process those late additions. Range form would only walk over
// the fixed initial set.
for i := 0; i < len(p.notes); i++ {
ref := p.notes[i]
p.addExistingChild(ref.footnote, 0)
block := ref.footnote
block.ListFlags = flags | ListTypeOrdered
block.RefLink = ref.link
if ref.hasBlock {
flags |= ListItemContainsBlock
p.block(ref.title)
} else {
p.inline(block, ref.title)
}
flags &^= ListItemBeginningOfList | ListItemContainsBlock
}
above := block.Parent
finalizeList(block)
p.tip = above
block.Walk(func(node *Node, entering bool) WalkStatus {
if node.Type == Paragraph || node.Type == Heading {
p.inline(node, node.content)
node.content = nil
}
return GoToNext
})
}
//
@ -510,24 +480,62 @@ func secondPass(p *parser, input []byte) []byte {
// [^note]: This is the explanation.
//
// Footnotes should be placed at the end of the document in an ordered list.
// Inline footnotes such as:
// Finally, there are inline footnotes such as:
//
// Inline footnotes^[Not supported.] also exist.
// Inline footnotes^[Also supported.] provide a quick inline explanation,
// but are rendered at the bottom of the document.
//
// are not yet supported.
// References are parsed and stored in this struct.
// reference holds all information necessary for a reference-style links or
// footnotes.
//
// Consider this markdown with reference-style links:
//
// [link][ref]
//
// [ref]: /url/ "tooltip title"
//
// It will be ultimately converted to this HTML:
//
// <p><a href=\"/url/\" title=\"title\">link</a></p>
//
// And a reference structure will be populated as follows:
//
// p.refs["ref"] = &reference{
// link: "/url/",
// title: "tooltip title",
// }
//
// Alternatively, reference can contain information about a footnote. Consider
// this markdown:
//
// Text needing a footnote.[^a]
//
// [^a]: This is the note
//
// A reference structure will be populated as follows:
//
// p.refs["a"] = &reference{
// link: "a",
// title: "This is the note",
// noteID: <some positive int>,
// }
//
// TODO: As you can see, it begs for splitting into two dedicated structures
// for refs and for footnotes.
type reference struct {
link []byte
title []byte
noteId int // 0 if not a footnote ref
noteID int // 0 if not a footnote ref
hasBlock bool
text []byte
footnote *Node // a link to the Item node within a list of footnotes
text []byte // only gets populated by refOverride feature with Reference.Text
}
func (r *reference) String() string {
return fmt.Sprintf("{link: %q, title: %q, text: %q, noteId: %d, hasBlock: %v}",
r.link, r.title, r.text, r.noteId, r.hasBlock)
return fmt.Sprintf("{link: %q, title: %q, text: %q, noteID: %d, hasBlock: %v}",
r.link, r.title, r.text, r.noteID, r.hasBlock)
}
// Check whether or not data starts with a reference link.
@ -535,7 +543,7 @@ func (r *reference) String() string {
// (in the render struct).
// Returns the number of bytes to skip to move past it,
// or zero if the first line is not a reference.
func isReference(p *parser, data []byte, tabSize int) int {
func isReference(p *Markdown, data []byte, tabSize int) int {
// up to 3 optional leading spaces
if len(data) < 4 {
return 0
@ -545,18 +553,18 @@ func isReference(p *parser, data []byte, tabSize int) int {
i++
}
noteId := 0
noteID := 0
// id part: anything but a newline between brackets
if data[i] != '[' {
return 0
}
i++
if p.flags&EXTENSION_FOOTNOTES != 0 {
if p.extensions&Footnotes != 0 {
if i < len(data) && data[i] == '^' {
// we can set it to anything here because the proper noteIds will
// be assigned later during the second pass. It just has to be != 0
noteId = 1
noteID = 1
i++
}
}
@ -568,7 +576,11 @@ func isReference(p *parser, data []byte, tabSize int) int {
return 0
}
idEnd := i
// footnotes can have empty ID, like this: [^], but a reference can not be
// empty like this: []. Break early if it's not a footnote and there's no ID
if noteID == 0 && idOffset == idEnd {
return 0
}
// spacer: colon (space | tab)* newline? (space | tab)*
i++
if i >= len(data) || data[i] != ':' {
@ -599,7 +611,7 @@ func isReference(p *parser, data []byte, tabSize int) int {
hasBlock bool
)
if p.flags&EXTENSION_FOOTNOTES != 0 && noteId != 0 {
if p.extensions&Footnotes != 0 && noteID != 0 {
linkOffset, linkEnd, raw, hasBlock = scanFootnote(p, data, i, tabSize)
lineEnd = linkEnd
} else {
@ -612,11 +624,11 @@ func isReference(p *parser, data []byte, tabSize int) int {
// a valid ref has been found
ref := &reference{
noteId: noteId,
noteID: noteID,
hasBlock: hasBlock,
}
if noteId > 0 {
if noteID > 0 {
// reusing the link field for the id since footnotes don't have links
ref.link = data[idOffset:idEnd]
// if footnote, it's not really a title, it's the contained text
@ -634,15 +646,12 @@ func isReference(p *parser, data []byte, tabSize int) int {
return lineEnd
}
func scanLinkRef(p *parser, data []byte, i int) (linkOffset, linkEnd, titleOffset, titleEnd, lineEnd int) {
func scanLinkRef(p *Markdown, data []byte, i int) (linkOffset, linkEnd, titleOffset, titleEnd, lineEnd int) {
// link: whitespace-free sequence, optionally between angle brackets
if data[i] == '<' {
i++
}
linkOffset = i
if i == len(data) {
return
}
for i < len(data) && data[i] != ' ' && data[i] != '\t' && data[i] != '\n' && data[i] != '\r' {
i++
}
@ -705,13 +714,13 @@ func scanLinkRef(p *parser, data []byte, i int) (linkOffset, linkEnd, titleOffse
return
}
// The first bit of this logic is the same as (*parser).listItem, but the rest
// The first bit of this logic is the same as Parser.listItem, but the rest
// is much simpler. This function simply finds the entire block and shifts it
// over by one tab if it is indeed a block (just returns the line if it's not).
// blockEnd is the end of the section in the input buffer, and contents is the
// extracted text that was shifted over one tab. It will need to be rendered at
// the end of the document.
func scanFootnote(p *parser, data []byte, i, indentSize int) (blockStart, blockEnd int, contents []byte, hasBlock bool) {
func scanFootnote(p *Markdown, data []byte, i, indentSize int) (blockStart, blockEnd int, contents []byte, hasBlock bool) {
if i == 0 || len(data) == 0 {
return
}
@ -812,7 +821,7 @@ func ishorizontalspace(c byte) bool {
return c == ' ' || c == '\t'
}
// Test if a character is a vertical whitespace character.
// Test if a character is a vertical character.
func isverticalspace(c byte) bool {
return c == '\n' || c == '\r' || c == '\f' || c == '\v'
}

354
vendor/github.com/russross/blackfriday/v2/node.go generated vendored Normal file
View file

@ -0,0 +1,354 @@
package blackfriday
import (
"bytes"
"fmt"
)
// NodeType specifies a type of a single node of a syntax tree. Usually one
// node (and its type) corresponds to a single markdown feature, e.g. emphasis
// or code block.
type NodeType int
// Constants for identifying different types of nodes. See NodeType.
const (
Document NodeType = iota
BlockQuote
List
Item
Paragraph
Heading
HorizontalRule
Emph
Strong
Del
Link
Image
Text
HTMLBlock
CodeBlock
Softbreak
Hardbreak
Code
HTMLSpan
Table
TableCell
TableHead
TableBody
TableRow
)
var nodeTypeNames = []string{
Document: "Document",
BlockQuote: "BlockQuote",
List: "List",
Item: "Item",
Paragraph: "Paragraph",
Heading: "Heading",
HorizontalRule: "HorizontalRule",
Emph: "Emph",
Strong: "Strong",
Del: "Del",
Link: "Link",
Image: "Image",
Text: "Text",
HTMLBlock: "HTMLBlock",
CodeBlock: "CodeBlock",
Softbreak: "Softbreak",
Hardbreak: "Hardbreak",
Code: "Code",
HTMLSpan: "HTMLSpan",
Table: "Table",
TableCell: "TableCell",
TableHead: "TableHead",
TableBody: "TableBody",
TableRow: "TableRow",
}
func (t NodeType) String() string {
return nodeTypeNames[t]
}
// ListData contains fields relevant to a List and Item node type.
type ListData struct {
ListFlags ListType
Tight bool // Skip <p>s around list item data if true
BulletChar byte // '*', '+' or '-' in bullet lists
Delimiter byte // '.' or ')' after the number in ordered lists
RefLink []byte // If not nil, turns this list item into a footnote item and triggers different rendering
IsFootnotesList bool // This is a list of footnotes
}
// LinkData contains fields relevant to a Link node type.
type LinkData struct {
Destination []byte // Destination is what goes into a href
Title []byte // Title is the tooltip thing that goes in a title attribute
NoteID int // NoteID contains a serial number of a footnote, zero if it's not a footnote
Footnote *Node // If it's a footnote, this is a direct link to the footnote Node. Otherwise nil.
}
// CodeBlockData contains fields relevant to a CodeBlock node type.
type CodeBlockData struct {
IsFenced bool // Specifies whether it's a fenced code block or an indented one
Info []byte // This holds the info string
FenceChar byte
FenceLength int
FenceOffset int
}
// TableCellData contains fields relevant to a TableCell node type.
type TableCellData struct {
IsHeader bool // This tells if it's under the header row
Align CellAlignFlags // This holds the value for align attribute
}
// HeadingData contains fields relevant to a Heading node type.
type HeadingData struct {
Level int // This holds the heading level number
HeadingID string // This might hold heading ID, if present
IsTitleblock bool // Specifies whether it's a title block
}
// Node is a single element in the abstract syntax tree of the parsed document.
// It holds connections to the structurally neighboring nodes and, for certain
// types of nodes, additional information that might be needed when rendering.
type Node struct {
Type NodeType // Determines the type of the node
Parent *Node // Points to the parent
FirstChild *Node // Points to the first child, if any
LastChild *Node // Points to the last child, if any
Prev *Node // Previous sibling; nil if it's the first child
Next *Node // Next sibling; nil if it's the last child
Literal []byte // Text contents of the leaf nodes
HeadingData // Populated if Type is Heading
ListData // Populated if Type is List
CodeBlockData // Populated if Type is CodeBlock
LinkData // Populated if Type is Link
TableCellData // Populated if Type is TableCell
content []byte // Markdown content of the block nodes
open bool // Specifies an open block node that has not been finished to process yet
}
// NewNode allocates a node of a specified type.
func NewNode(typ NodeType) *Node {
return &Node{
Type: typ,
open: true,
}
}
func (n *Node) String() string {
ellipsis := ""
snippet := n.Literal
if len(snippet) > 16 {
snippet = snippet[:16]
ellipsis = "..."
}
return fmt.Sprintf("%s: '%s%s'", n.Type, snippet, ellipsis)
}
// Unlink removes node 'n' from the tree.
// It panics if the node is nil.
func (n *Node) Unlink() {
if n.Prev != nil {
n.Prev.Next = n.Next
} else if n.Parent != nil {
n.Parent.FirstChild = n.Next
}
if n.Next != nil {
n.Next.Prev = n.Prev
} else if n.Parent != nil {
n.Parent.LastChild = n.Prev
}
n.Parent = nil
n.Next = nil
n.Prev = nil
}
// AppendChild adds a node 'child' as a child of 'n'.
// It panics if either node is nil.
func (n *Node) AppendChild(child *Node) {
child.Unlink()
child.Parent = n
if n.LastChild != nil {
n.LastChild.Next = child
child.Prev = n.LastChild
n.LastChild = child
} else {
n.FirstChild = child
n.LastChild = child
}
}
// InsertBefore inserts 'sibling' immediately before 'n'.
// It panics if either node is nil.
func (n *Node) InsertBefore(sibling *Node) {
sibling.Unlink()
sibling.Prev = n.Prev
if sibling.Prev != nil {
sibling.Prev.Next = sibling
}
sibling.Next = n
n.Prev = sibling
sibling.Parent = n.Parent
if sibling.Prev == nil {
sibling.Parent.FirstChild = sibling
}
}
func (n *Node) isContainer() bool {
switch n.Type {
case Document:
fallthrough
case BlockQuote:
fallthrough
case List:
fallthrough
case Item:
fallthrough
case Paragraph:
fallthrough
case Heading:
fallthrough
case Emph:
fallthrough
case Strong:
fallthrough
case Del:
fallthrough
case Link:
fallthrough
case Image:
fallthrough
case Table:
fallthrough
case TableHead:
fallthrough
case TableBody:
fallthrough
case TableRow:
fallthrough
case TableCell:
return true
default:
return false
}
}
func (n *Node) canContain(t NodeType) bool {
if n.Type == List {
return t == Item
}
if n.Type == Document || n.Type == BlockQuote || n.Type == Item {
return t != Item
}
if n.Type == Table {
return t == TableHead || t == TableBody
}
if n.Type == TableHead || n.Type == TableBody {
return t == TableRow
}
if n.Type == TableRow {
return t == TableCell
}
return false
}
// WalkStatus allows NodeVisitor to have some control over the tree traversal.
// It is returned from NodeVisitor and different values allow Node.Walk to
// decide which node to go to next.
type WalkStatus int
const (
// GoToNext is the default traversal of every node.
GoToNext WalkStatus = iota
// SkipChildren tells walker to skip all children of current node.
SkipChildren
// Terminate tells walker to terminate the traversal.
Terminate
)
// NodeVisitor is a callback to be called when traversing the syntax tree.
// Called twice for every node: once with entering=true when the branch is
// first visited, then with entering=false after all the children are done.
type NodeVisitor func(node *Node, entering bool) WalkStatus
// Walk is a convenience method that instantiates a walker and starts a
// traversal of subtree rooted at n.
func (n *Node) Walk(visitor NodeVisitor) {
w := newNodeWalker(n)
for w.current != nil {
status := visitor(w.current, w.entering)
switch status {
case GoToNext:
w.next()
case SkipChildren:
w.entering = false
w.next()
case Terminate:
return
}
}
}
type nodeWalker struct {
current *Node
root *Node
entering bool
}
func newNodeWalker(root *Node) *nodeWalker {
return &nodeWalker{
current: root,
root: root,
entering: true,
}
}
func (nw *nodeWalker) next() {
if (!nw.current.isContainer() || !nw.entering) && nw.current == nw.root {
nw.current = nil
return
}
if nw.entering && nw.current.isContainer() {
if nw.current.FirstChild != nil {
nw.current = nw.current.FirstChild
nw.entering = true
} else {
nw.entering = false
}
} else if nw.current.Next == nil {
nw.current = nw.current.Parent
nw.entering = false
} else {
nw.current = nw.current.Next
nw.entering = true
}
}
func dump(ast *Node) {
fmt.Println(dumpString(ast))
}
func dumpR(ast *Node, depth int) string {
if ast == nil {
return ""
}
indent := bytes.Repeat([]byte("\t"), depth)
content := ast.Literal
if content == nil {
content = ast.content
}
result := fmt.Sprintf("%s%s(%q)\n", indent, ast.Type, content)
for n := ast.FirstChild; n != nil; n = n.Next {
result += dumpR(n, depth+1)
}
return result
}
func dumpString(ast *Node) string {
return dumpR(ast, 0)
}

139
vendor/github.com/russross/blackfriday/smartypants.go → vendor/github.com/russross/blackfriday/v2/smartypants.go generated vendored
View file

@ -17,11 +17,14 @@ package blackfriday
import (
"bytes"
"io"
)
type smartypantsData struct {
// SPRenderer is a struct containing state of a Smartypants renderer.
type SPRenderer struct {
inSingleQuote bool
inDoubleQuote bool
callbacks [256]smartCallback
}
func wordBoundary(c byte) bool {
@ -118,7 +121,7 @@ func smartQuoteHelper(out *bytes.Buffer, previousChar byte, nextChar byte, quote
return true
}
func smartSingleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
func (r *SPRenderer) smartSingleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
if len(text) >= 2 {
t1 := tolower(text[1])
@ -127,7 +130,7 @@ func smartSingleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byt
if len(text) >= 3 {
nextChar = text[2]
}
if smartQuoteHelper(out, previousChar, nextChar, 'd', &smrt.inDoubleQuote, false) {
if smartQuoteHelper(out, previousChar, nextChar, 'd', &r.inDoubleQuote, false) {
return 1
}
}
@ -152,7 +155,7 @@ func smartSingleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byt
if len(text) > 1 {
nextChar = text[1]
}
if smartQuoteHelper(out, previousChar, nextChar, 's', &smrt.inSingleQuote, false) {
if smartQuoteHelper(out, previousChar, nextChar, 's', &r.inSingleQuote, false) {
return 0
}
@ -160,7 +163,7 @@ func smartSingleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byt
return 0
}
func smartParens(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
func (r *SPRenderer) smartParens(out *bytes.Buffer, previousChar byte, text []byte) int {
if len(text) >= 3 {
t1 := tolower(text[1])
t2 := tolower(text[2])
@ -185,7 +188,7 @@ func smartParens(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, te
return 0
}
func smartDash(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
func (r *SPRenderer) smartDash(out *bytes.Buffer, previousChar byte, text []byte) int {
if len(text) >= 2 {
if text[1] == '-' {
out.WriteString("&mdash;")
@ -202,7 +205,7 @@ func smartDash(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text
return 0
}
func smartDashLatex(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
func (r *SPRenderer) smartDashLatex(out *bytes.Buffer, previousChar byte, text []byte) int {
if len(text) >= 3 && text[1] == '-' && text[2] == '-' {
out.WriteString("&mdash;")
return 2
@ -216,13 +219,13 @@ func smartDashLatex(out *bytes.Buffer, smrt *smartypantsData, previousChar byte,
return 0
}
func smartAmpVariant(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte, quote byte, addNBSP bool) int {
func (r *SPRenderer) smartAmpVariant(out *bytes.Buffer, previousChar byte, text []byte, quote byte, addNBSP bool) int {
if bytes.HasPrefix(text, []byte("&quot;")) {
nextChar := byte(0)
if len(text) >= 7 {
nextChar = text[6]
}
if smartQuoteHelper(out, previousChar, nextChar, quote, &smrt.inDoubleQuote, addNBSP) {
if smartQuoteHelper(out, previousChar, nextChar, quote, &r.inDoubleQuote, addNBSP) {
return 5
}
}
@ -235,18 +238,18 @@ func smartAmpVariant(out *bytes.Buffer, smrt *smartypantsData, previousChar byte
return 0
}
func smartAmp(angledQuotes, addNBSP bool) func(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
func (r *SPRenderer) smartAmp(angledQuotes, addNBSP bool) func(*bytes.Buffer, byte, []byte) int {
var quote byte = 'd'
if angledQuotes {
quote = 'a'
}
return func(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartAmpVariant(out, smrt, previousChar, text, quote, addNBSP)
return func(out *bytes.Buffer, previousChar byte, text []byte) int {
return r.smartAmpVariant(out, previousChar, text, quote, addNBSP)
}
}
func smartPeriod(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
func (r *SPRenderer) smartPeriod(out *bytes.Buffer, previousChar byte, text []byte) int {
if len(text) >= 3 && text[1] == '.' && text[2] == '.' {
out.WriteString("&hellip;")
return 2
@ -261,13 +264,13 @@ func smartPeriod(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, te
return 0
}
func smartBacktick(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
func (r *SPRenderer) smartBacktick(out *bytes.Buffer, previousChar byte, text []byte) int {
if len(text) >= 2 && text[1] == '`' {
nextChar := byte(0)
if len(text) >= 3 {
nextChar = text[2]
}
if smartQuoteHelper(out, previousChar, nextChar, 'd', &smrt.inDoubleQuote, false) {
if smartQuoteHelper(out, previousChar, nextChar, 'd', &r.inDoubleQuote, false) {
return 1
}
}
@ -276,7 +279,7 @@ func smartBacktick(out *bytes.Buffer, smrt *smartypantsData, previousChar byte,
return 0
}
func smartNumberGeneric(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
func (r *SPRenderer) smartNumberGeneric(out *bytes.Buffer, previousChar byte, text []byte) int {
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
// is it of the form digits/digits(word boundary)?, i.e., \d+/\d+\b
// note: check for regular slash (/) or fraction slash (⁄, 0x2044, or 0xe2 81 84 in utf-8)
@ -318,7 +321,7 @@ func smartNumberGeneric(out *bytes.Buffer, smrt *smartypantsData, previousChar b
return 0
}
func smartNumber(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
func (r *SPRenderer) smartNumber(out *bytes.Buffer, previousChar byte, text []byte) int {
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
if text[0] == '1' && text[1] == '/' && text[2] == '2' {
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' {
@ -346,27 +349,27 @@ func smartNumber(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, te
return 0
}
func smartDoubleQuoteVariant(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte, quote byte) int {
func (r *SPRenderer) smartDoubleQuoteVariant(out *bytes.Buffer, previousChar byte, text []byte, quote byte) int {
nextChar := byte(0)
if len(text) > 1 {
nextChar = text[1]
}
if !smartQuoteHelper(out, previousChar, nextChar, quote, &smrt.inDoubleQuote, false) {
if !smartQuoteHelper(out, previousChar, nextChar, quote, &r.inDoubleQuote, false) {
out.WriteString("&quot;")
}
return 0
}
func smartDoubleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartDoubleQuoteVariant(out, smrt, previousChar, text, 'd')
func (r *SPRenderer) smartDoubleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
return r.smartDoubleQuoteVariant(out, previousChar, text, 'd')
}
func smartAngledDoubleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
return smartDoubleQuoteVariant(out, smrt, previousChar, text, 'a')
func (r *SPRenderer) smartAngledDoubleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
return r.smartDoubleQuoteVariant(out, previousChar, text, 'a')
}
func smartLeftAngle(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
func (r *SPRenderer) smartLeftAngle(out *bytes.Buffer, previousChar byte, text []byte) int {
i := 0
for i < len(text) && text[i] != '>' {
@ -377,54 +380,78 @@ func smartLeftAngle(out *bytes.Buffer, smrt *smartypantsData, previousChar byte,
return i
}
type smartCallback func(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int
type smartCallback func(out *bytes.Buffer, previousChar byte, text []byte) int
type smartypantsRenderer [256]smartCallback
// NewSmartypantsRenderer constructs a Smartypants renderer object.
func NewSmartypantsRenderer(flags HTMLFlags) *SPRenderer {
var (
r SPRenderer
var (
smartAmpAngled = smartAmp(true, false)
smartAmpAngledNBSP = smartAmp(true, true)
smartAmpRegular = smartAmp(false, false)
smartAmpRegularNBSP = smartAmp(false, true)
)
smartAmpAngled = r.smartAmp(true, false)
smartAmpAngledNBSP = r.smartAmp(true, true)
smartAmpRegular = r.smartAmp(false, false)
smartAmpRegularNBSP = r.smartAmp(false, true)
func smartypants(flags int) *smartypantsRenderer {
r := new(smartypantsRenderer)
addNBSP := flags&HTML_SMARTYPANTS_QUOTES_NBSP != 0
if flags&HTML_SMARTYPANTS_ANGLED_QUOTES == 0 {
r['"'] = smartDoubleQuote
addNBSP = flags&SmartypantsQuotesNBSP != 0
)
if flags&SmartypantsAngledQuotes == 0 {
r.callbacks['"'] = r.smartDoubleQuote
if !addNBSP {
r['&'] = smartAmpRegular
r.callbacks['&'] = smartAmpRegular
} else {
r['&'] = smartAmpRegularNBSP
r.callbacks['&'] = smartAmpRegularNBSP
}
} else {
r['"'] = smartAngledDoubleQuote
r.callbacks['"'] = r.smartAngledDoubleQuote
if !addNBSP {
r['&'] = smartAmpAngled
r.callbacks['&'] = smartAmpAngled
} else {
r['&'] = smartAmpAngledNBSP
r.callbacks['&'] = smartAmpAngledNBSP
}
}
r['\''] = smartSingleQuote
r['('] = smartParens
if flags&HTML_SMARTYPANTS_DASHES != 0 {
if flags&HTML_SMARTYPANTS_LATEX_DASHES == 0 {
r['-'] = smartDash
r.callbacks['\''] = r.smartSingleQuote
r.callbacks['('] = r.smartParens
if flags&SmartypantsDashes != 0 {
if flags&SmartypantsLatexDashes == 0 {
r.callbacks['-'] = r.smartDash
} else {
r['-'] = smartDashLatex
r.callbacks['-'] = r.smartDashLatex
}
}
r['.'] = smartPeriod
if flags&HTML_SMARTYPANTS_FRACTIONS == 0 {
r['1'] = smartNumber
r['3'] = smartNumber
r.callbacks['.'] = r.smartPeriod
if flags&SmartypantsFractions == 0 {
r.callbacks['1'] = r.smartNumber
r.callbacks['3'] = r.smartNumber
} else {
for ch := '1'; ch <= '9'; ch++ {
r[ch] = smartNumberGeneric
r.callbacks[ch] = r.smartNumberGeneric
}
}
r['<'] = smartLeftAngle
r['`'] = smartBacktick
return r
r.callbacks['<'] = r.smartLeftAngle
r.callbacks['`'] = r.smartBacktick
return &r
}
// Process is the entry point of the Smartypants renderer.
func (r *SPRenderer) Process(w io.Writer, text []byte) {
mark := 0
for i := 0; i < len(text); i++ {
if action := r.callbacks[text[i]]; action != nil {
if i > mark {
w.Write(text[mark:i])
}
previousChar := byte(0)
if i > 0 {
previousChar = text[i-1]
}
var tmp bytes.Buffer
i += action(&tmp, previousChar, text[i:])
w.Write(tmp.Bytes())
mark = i + 1
}
}
if mark < len(text) {
w.Write(text[mark:])
}
}

6
vendor/github.com/shurcooL/sanitized_anchor_name/.travis.yml generated vendored
View file

@ -1,11 +1,11 @@
sudo: false
language: go
go:
- 1.7
- tip
- 1.x
- master
matrix:
allow_failures:
- go: tip
- go: master
fast_finish: true
install:
- # Do nothing. This is needed to prevent default install action "go get -t -v ./..." from happening here (we want it to happen inside script step).

10
vendor/github.com/shurcooL/sanitized_anchor_name/LICENSE generated vendored
View file

@ -1,3 +1,5 @@
MIT License
Copyright (c) 2015 Dmitri Shuralyov
Permission is hereby granted, free of charge, to any person obtaining a copy
@ -7,13 +9,13 @@ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

6
vendor/github.com/shurcooL/sanitized_anchor_name/README.md generated vendored
View file

@ -5,9 +5,11 @@ sanitized_anchor_name
Package sanitized_anchor_name provides a func to create sanitized anchor names.
Its logic can be reused by multiple packages to create interoperable anchor names and links to those anchors.
Its logic can be reused by multiple packages to create interoperable anchor names
and links to those anchors.
At this time, it does not try to ensure that generated anchor names are unique, that responsibility falls on the caller.
At this time, it does not try to ensure that generated anchor names
are unique, that responsibility falls on the caller.
Installation
------------

1
vendor/github.com/shurcooL/sanitized_anchor_name/go.mod generated vendored Normal file
View file

@ -0,0 +1 @@
module github.com/shurcooL/sanitized_anchor_name

2
vendor/github.com/shurcooL/sanitized_anchor_name/main.go generated vendored
View file

@ -13,7 +13,7 @@ import "unicode"
func Create(text string) string {
var anchorName []rune
var futureDash = false
for _, r := range []rune(text) {
for _, r := range text {
switch {
case unicode.IsLetter(r) || unicode.IsNumber(r):
if futureDash && len(anchorName) > 0 {

6
vendor/golang.org/x/net/html/token.go generated vendored
View file

@ -347,6 +347,7 @@ loop:
break loop
}
if c != '/' {
z.raw.end--
continue loop
}
if z.readRawEndTag() || z.err != nil {
@ -1067,6 +1068,11 @@ loop:
// Raw returns the unmodified text of the current token. Calling Next, Token,
// Text, TagName or TagAttr may change the contents of the returned slice.
//
// The token stream's raw bytes partition the byte stream (up until an
// ErrorToken). There are no overlaps or gaps between two consecutive token's
// raw bytes. One implication is that the byte offset of the current token is
// the sum of the lengths of all previous tokens' raw bytes.
func (z *Tokenizer) Raw() []byte {
return z.buf[z.raw.start:z.raw.end]
}

12
vendor/modules.txt vendored
View file

@ -95,8 +95,6 @@ github.com/boombuler/barcode/qr
github.com/boombuler/barcode/utils
# github.com/bradfitz/gomemcache v0.0.0-20190329173943-551aad21a668
github.com/bradfitz/gomemcache/memcache
# github.com/chaseadamsio/goorgeous v0.0.0-20170901132237-098da33fde5f
github.com/chaseadamsio/goorgeous
# github.com/couchbase/gomemcached v0.0.0-20190515232915-c4b4ca0eb21d
github.com/couchbase/gomemcached
github.com/couchbase/gomemcached/client
@ -332,6 +330,8 @@ github.com/mschoch/smat
github.com/msteinert/pam
# github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5
github.com/nfnt/resize
# github.com/niklasfasching/go-org v0.1.7
github.com/niklasfasching/go-org/org
# github.com/oliamb/cutter v0.2.2
github.com/oliamb/cutter
# github.com/pelletier/go-toml v1.4.0
@ -360,15 +360,15 @@ github.com/prometheus/common/model
github.com/prometheus/procfs
github.com/prometheus/procfs/internal/fs
github.com/prometheus/procfs/internal/util
# github.com/russross/blackfriday v0.0.0-20180428102519-11635eb403ff
github.com/russross/blackfriday
# github.com/russross/blackfriday/v2 v2.0.1
github.com/russross/blackfriday/v2
# github.com/satori/go.uuid v1.2.0
github.com/satori/go.uuid
# github.com/sergi/go-diff v1.0.0
github.com/sergi/go-diff/diffmatchpatch
# github.com/shurcooL/httpfs v0.0.0-20190527155220-6a4d4a70508b
github.com/shurcooL/httpfs/vfsutil
# github.com/shurcooL/sanitized_anchor_name v0.0.0-20160918041101-1dba4b3954bc
# github.com/shurcooL/sanitized_anchor_name v1.0.0
github.com/shurcooL/sanitized_anchor_name
# github.com/shurcooL/vfsgen v0.0.0-20181202132449-6a9ea43bcacd
github.com/shurcooL/vfsgen
@ -464,7 +464,7 @@ golang.org/x/crypto/scrypt
golang.org/x/crypto/ssh
golang.org/x/crypto/ssh/agent
golang.org/x/crypto/ssh/knownhosts
# golang.org/x/net v0.0.0-20190909003024-a7b16738d86b
# golang.org/x/net v0.0.0-20191028085509-fe3aa8a45271
golang.org/x/net/context
golang.org/x/net/context/ctxhttp
golang.org/x/net/html