66 lines
3.1 KiB
Ada
66 lines
3.1 KiB
Ada
------------------------------------------------------------------------------
|
|
-- --
|
|
-- GNAT RUN-TIME COMPONENTS --
|
|
-- --
|
|
-- ADA.STRINGS.UTF_ENCODING.STRINGS --
|
|
-- --
|
|
-- S p e c --
|
|
-- --
|
|
-- This specification is derived from the Ada Reference Manual for use with --
|
|
-- GNAT. In accordance with the copyright of that document, you can freely --
|
|
-- copy and modify this specification, provided that if you redistribute a --
|
|
-- modified version, any changes that you have made are clearly indicated. --
|
|
-- --
|
|
------------------------------------------------------------------------------
|
|
|
|
-- This is an Ada 2012 package defined in AI05-0137-1. It is used for encoding
|
|
-- and decoding String values using UTF encodings. Note: this package is
|
|
-- consistent with Ada 95, and may be included in Ada 95 implementations.
|
|
|
|
package Ada.Strings.UTF_Encoding.Strings is
|
|
pragma Pure (Strings);
|
|
|
|
-- The encoding routines take a String as input and encode the result
|
|
-- using the specified UTF encoding method. The result includes a BOM if
|
|
-- the Output_BOM argument is set to True. All 256 values of type Character
|
|
-- are valid, so Encoding_Error cannot be raised for string input data.
|
|
|
|
function Encode
|
|
(Item : String;
|
|
Output_Scheme : Encoding_Scheme;
|
|
Output_BOM : Boolean := False) return UTF_String;
|
|
-- Encode String using UTF-8, UTF-16LE or UTF-16BE encoding as specified by
|
|
-- the Output_Scheme parameter.
|
|
|
|
function Encode
|
|
(Item : String;
|
|
Output_BOM : Boolean := False) return UTF_8_String;
|
|
-- Encode String using UTF-8 encoding
|
|
|
|
function Encode
|
|
(Item : String;
|
|
Output_BOM : Boolean := False) return UTF_16_Wide_String;
|
|
-- Encode String using UTF_16 encoding
|
|
|
|
-- The decoding routines take a UTF String as input, and return a decoded
|
|
-- Wide_String. If the UTF String starts with a BOM that matches the
|
|
-- encoding method, it is ignored. An incorrect BOM raises Encoding_Error,
|
|
-- as does a code out of range of type Character.
|
|
|
|
function Decode
|
|
(Item : UTF_String;
|
|
Input_Scheme : Encoding_Scheme) return String;
|
|
-- The input is encoded in UTF_8, UTF_16LE or UTF_16BE as specified by the
|
|
-- Input_Scheme parameter. It is decoded and returned as a String value.
|
|
-- Note: a convenient form for scheme may be Encoding (UTF_String).
|
|
|
|
function Decode
|
|
(Item : UTF_8_String) return String;
|
|
-- The input is encoded in UTF-8 and returned as a String value
|
|
|
|
function Decode
|
|
(Item : UTF_16_Wide_String) return String;
|
|
-- The input is encoded in UTF-16 and returned as a String value
|
|
|
|
end Ada.Strings.UTF_Encoding.Strings;
|