maxchar.h File Reference

#include <stdlib.h>
#include <stdio.h>
#include "maxheap.h"
#include "strbasic.h"

Classes
class	Char
	Represents a single Unicode character. More...
class	CharIterator< ChType >
	Iterate intelligently inside a string. More...
class	CharAccumulator
	Character accumulator. More...

Namespaces
namespace	MaxSDK
namespace	MaxSDK::Util

Functions
UtilExport size_t	UTF32ToWideChar (const unsigned int *lpUTF32CharStr, size_t ccUTF32Char, wchar_t *lpWideCharStr, size_t cchWideChar)
	Convert a UTF32 character string to UTF16 characters.
UtilExport size_t	WideCharToUTF32 (const wchar_t *lpWideCharStr, size_t cchWideChar, unsigned int *lpUTF32CharStr, size_t ccUTF32Char)
	Convert UTF16 character string to UTF32 characters.

Function Documentation

UTF32ToWideChar()

UtilExport size_t UTF32ToWideChar	(	const unsigned int *	lpUTF32CharStr,
		size_t	ccUTF32Char,
		wchar_t *	lpWideCharStr,
		size_t	cchWideChar
	)

Convert a UTF32 character string to UTF16 characters.

Parameters

lpUTF32CharStr	Pointer to the character string to convert.
ccUTF32Char	Size, in WWCHAR, of the string indicated by the lpUTF32CharStr parameter. Alternatively, this parameter can be set to -1 if the string is null-terminated. Note that, if ccUTF32Char is 0, the function fails.

If this parameter is -1, the function processes the entire input string, including the terminating null character. Therefore, the resulting Unicode string has a terminating null character, and the length returned by the function includes this character.

If this parameter is set to a positive integer, the function processes exactly the specified number of bytes. If the provided size does not include a terminating null character, the resulting Unicode string is not null-terminated, and the returned length does not include this character.

Parameters

lpWideCharStr	Optional. Pointer to a buffer that receives the converted string.
cchWideChar	Size, in WCHAR, of the buffer indicated by lpWideCharStr. If this value is 0, the function returns the required buffer size, in characters, including any terminating null character, and makes no use of the lpWideCharStr buffer.

Returns

Returns the number of characters written to the buffer indicated by lpWideCharStr if successful. If the function succeeds and cchWideChar is 0, the return value is the required size, in WCHAR, for the buffer indicated by lpWideCharStr.

The function returns 0 if it does not succeed. To get extended error information, the application can call GetLastError, which can return one of the following error codes:

• ERROR_INSUFFICIENT_BUFFER. A supplied buffer size was not large enough, or it was incorrectly set to NULL.
• ERROR_INVALID_PARAMETER. Any of the parameter values was invalid.

WideCharToUTF32()

UtilExport size_t WideCharToUTF32	(	const wchar_t *	lpWideCharStr,
		size_t	cchWideChar,
		unsigned int *	lpUTF32CharStr,
		size_t	ccUTF32Char
	)

Convert UTF16 character string to UTF32 characters.

Parameters

lpWideCharStr	Pointer to the character string to convert.
cchWideChar	Size, in WCHAR, of the string indicated by the lpWideCharStr parameter. Alternatively, this parameter can be set to -1 if the string is null-terminated. Note that, if cchWideChar is 0, the function fails.

If this parameter is -1, the function processes the entire input string, including the terminating null character. Therefore, the resulting Unicode string has a terminating null character, and the length returned by the function includes this character.

If this parameter is set to a positive integer, the function processes exactly the specified number of bytes. If the provided size does not include a terminating null character, the resulting Unicode string is not null-terminated, and the returned length does not include this character.

Parameters

lpUTF32CharStr	Optional. Pointer to a buffer that receives the converted string.
ccUTF32Char	Size, in WWCHAR, of the buffer indicated by lpUTF32CharStr. If this value is 0, the function returns the required buffer size, in characters, including any terminating null character, and makes no use of the lpUTF32CharStr buffer.

Returns

Returns the number of character written to the buffer indicated by lpUTF32CharStr if successful. If the function succeeds and ccUTF32Char is 0, the return value is the required size, in WWCHAR, for the buffer indicated by lpUTF32CharStr.

The function returns 0 if it does not succeed. To get extended error information, the application can call GetLastError, which can return one of the following error codes:

• ERROR_INSUFFICIENT_BUFFER. A supplied buffer size was not large enough, or it was incorrectly set to NULL.
• ERROR_INVALID_PARAMETER. Any of the parameter values was invalid.