This repository has been archived on 2024-12-16. You can view files and clone it, but cannot push or open issues or pull requests.
CodeBlocksPortable/wxWidgets-3.0.5/interface/wx/txtstrm.h

313 lines
8.4 KiB
Objective-C

/////////////////////////////////////////////////////////////////////////////
// Name: txtstrm.h
// Purpose: interface of wxTextInputStream
// Author: wxWidgets team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
/**
@class wxTextInputStream
This class provides functions that reads text data using an input stream,
allowing you to read text, floats, and integers.
The wxTextInputStream correctly reads text files (or streams) in DOS,
Macintosh and Unix formats and reports a single newline char as a line
ending.
wxTextInputStream::operator>>() is overloaded and you can use this class
like a standard C++ iostream. Note, however, that the arguments are the
fixed size types wxUint32, wxInt32 etc and on a typical 32-bit computer,
none of these match to the "long" type (wxInt32 is defined as int on 32-bit
architectures) so that you cannot use long. To avoid problems (here and
elsewhere), make use of wxInt32, wxUint32 and similar types.
If you're scanning through a file using wxTextInputStream, you should check
for @c EOF @b before reading the next item (word / number), because
otherwise the last item may get lost. You should however be prepared to
receive an empty item (empty string / zero number) at the end of file,
especially on Windows systems. This is unavoidable because most (but not
all) files end with whitespace (i.e. usually a newline).
For example:
@code
wxFileInputStream input( "mytext.txt" );
wxTextInputStream text( input );
wxUint8 i1;
float f2;
wxString line;
text >> i1; // read a 8 bit integer.
text >> i1 >> f2; // read a 8 bit integer followed by float.
text >> line; // read a text line
@endcode
@library{wxbase}
@category{streams}
@see wxTextOutputStream
*/
class wxTextInputStream
{
public:
/**
Constructs a text stream associated to the given input stream.
@param stream
The underlying input stream.
@param sep
The initial string separator characters.
@param conv
<b>In Unicode build only:</b> The encoding converter used to
convert the bytes in the underlying input stream to characters.
*/
wxTextInputStream(wxInputStream& stream, const wxString& sep = " \t",
const wxMBConv& conv = wxConvAuto());
/**
Destructor.
*/
~wxTextInputStream();
/**
Returns a pointer to the underlying input stream object.
@since 2.9.2
*/
const wxInputStream& GetInputStream() const;
/**
Reads a character, returns 0 if there are no more characters in the
stream.
*/
wxChar GetChar();
/**
Reads a unsigned 16 bit integer from the stream.
See Read8() for the description of the @a base parameter.
*/
wxUint16 Read16(int base = 10);
/**
Reads a signed 16 bit integer from the stream.
See Read8() for the description of the @a base parameter.
*/
wxInt16 Read16S(int base = 10);
/**
Reads a 32 bit unsigned integer from the stream.
See Read8() for the description of the @a base parameter.
*/
wxUint32 Read32(int base = 10);
/**
Reads a 32 bit signed integer from the stream.
See Read8() for the description of the @a base parameter.
*/
wxInt32 Read32S(int base = 10);
/**
Reads a single unsigned byte from the stream, given in base @a base.
The value of @a base must be comprised between 2 and 36, inclusive, or
be a special value 0 which means that the usual rules of C numbers are
applied: if the number starts with @c 0x it is considered to be in base
16, if it starts with 0 - in base 8 and in base 10 otherwise. Note that
you may not want to specify the base 0 if you are parsing the numbers
which may have leading zeroes as they can yield unexpected (to the user
not familiar with C) results.
*/
wxUint8 Read8(int base = 10);
/**
Reads a single signed byte from the stream.
See Read8() for the description of the @a base parameter.
*/
wxInt8 Read8S(int base = 10);
/**
Reads a double (IEEE encoded) from the stream.
*/
double ReadDouble();
/**
Reads a line from the input stream and returns it (without the end of
line character).
*/
wxString ReadLine();
/**
@deprecated Use ReadLine() or ReadWord() instead.
Same as ReadLine().
*/
wxString ReadString();
/**
Reads a word (a sequence of characters until the next separator) from
the input stream.
@see SetStringSeparators()
*/
wxString ReadWord();
/**
Sets the characters which are used to define the word boundaries in
ReadWord().
The default separators are the @c space and @c TAB characters.
*/
void SetStringSeparators(const wxString& sep);
};
/**
Specifies the end-of-line characters to use with wxTextOutputStream.
*/
typedef enum
{
/**
Specifies wxTextOutputStream to use the native end-of-line characters.
*/
wxEOL_NATIVE,
/**
Specifies wxTextOutputStream to use Unix end-of-line characters.
*/
wxEOL_UNIX,
/**
Specifies wxTextOutputStream to use Mac end-of-line characters.
*/
wxEOL_MAC,
/**
Specifies wxTextOutputStream to use DOS end-of-line characters.
*/
wxEOL_DOS
} wxEOL;
/**
@class wxTextOutputStream
This class provides functions that write text data using an output stream,
allowing you to write text, floats, and integers.
You can also simulate the C++ @c std::cout class:
@code
wxFFileOutputStream output( stderr );
wxTextOutputStream cout( output );
cout << "This is a text line" << endl;
cout << 1234;
cout << 1.23456;
@endcode
The wxTextOutputStream writes text files (or streams) on DOS, Macintosh and
Unix in their native formats (concerning the line ending).
@library{wxbase}
@category{streams}
@see wxTextInputStream
*/
class wxTextOutputStream
{
public:
/**
Constructs a text stream object associated to the given output stream.
@param stream
The output stream.
@param mode
The end-of-line mode. One of ::wxEOL_NATIVE, ::wxEOL_DOS,
::wxEOL_MAC and ::wxEOL_UNIX.
@param conv
<b>In Unicode build only:</b> The object used to convert
Unicode text into ASCII characters written to the output stream.
*/
wxTextOutputStream(wxOutputStream& stream,
wxEOL mode = wxEOL_NATIVE,
const wxMBConv& conv = wxConvAuto());
/**
Destroys the wxTextOutputStream object.
Also calls Flush().
*/
virtual ~wxTextOutputStream();
/**
Flushes the stream.
This method should be called when using stateful encodings (currently
the only example of such encoding in wxWidgets is wxMBConvUTF7) to
write the end of the encoded data to the stream.
@since 2.9.0
*/
void Flush();
/**
Returns a pointer to the underlying output stream object.
@since 2.9.2
*/
const wxOutputStream& GetOutputStream() const;
/**
Returns the end-of-line mode. One of ::wxEOL_DOS, ::wxEOL_MAC and
::wxEOL_UNIX.
*/
wxEOL GetMode();
/**
Writes a character to the stream.
*/
wxTextOutputStream& PutChar(wxChar c);
/**
Set the end-of-line mode. One of ::wxEOL_NATIVE, ::wxEOL_DOS,
::wxEOL_MAC and ::wxEOL_UNIX.
*/
void SetMode(wxEOL mode = wxEOL_NATIVE);
/**
Writes the 16 bit integer @a i16 to the stream.
*/
void Write16(wxUint16 i16);
/**
Writes the 32 bit integer @a i32 to the stream.
*/
void Write32(wxUint32 i32);
/**
Writes the single byte @a i8 to the stream.
*/
void Write8(wxUint8 i8);
/**
Writes the double @a f to the stream using the IEEE format.
*/
virtual void WriteDouble(double f);
/**
Writes @a string as a line. Depending on the end-of-line mode the end of
line ('\\n') characters in the string are converted to the correct line
ending terminator.
*/
virtual void WriteString(const wxString& string);
};