Text parsing functions

MiniGUI uses logical font to output text, also uses logical font to parsing the multi-byte characters and words in the text. More...

Data Structures
struct	_WORDINFO

Macros
#define	MB2WC(log_font, dest, mstr, n)   MB2WCEx (log_font, dest, sizeof(wchar_t) == 4, mstr, n)
	The backward compatibility version of MB2WCEx. More...
#define	WC2MB(log_font, s, wc)   WC2MBEx (log_font, s, (Uchar32)wc)
	The backward compatibility version of WC2MBEx. More...
#define	MBS2WCS(log_font, dest, mstr, mstr_len, n)
	The backward compatibility version of MBS2WCSEx. More...
#define	WCS2MBS(log_font, dest, wcs, wcs_len, n)
	The backward compatibility version of WCS2MBSEx. More...

Functions
MG_EXPORT int GUIAPI	GetTextMCharInfo (PLOGFONT log_font, const char *mstr, int len, int *pos_chars)
	Retrieve positions of multi-byte characters in a string. More...
MG_EXPORT int GUIAPI	GetTextWordInfo (PLOGFONT log_font, const char *mstr, int len, int *pos_words, WORDINFO *info_words)
	Retrieve information of multi-byte words in a string. More...
MG_EXPORT int GUIAPI	GetFirstMCharLen (PLOGFONT log_font, const char *mstr, int len)
	Retrieve the length of the first multi-byte character in a string. More...
MG_EXPORT int GUIAPI	GetFirstWord (PLOGFONT log_font, const char *mstr, int len, WORDINFO *word_info)
	Retrieve the length and info of the first multi-byte word in a string. More...
MG_EXPORT int GUIAPI	GetTextExtentPoint (HDC hdc, const char *text, int len, int max_extent, int *fit_chars, int *pos_chars, int *dx_chars, SIZE *size)
	Computes the extent of a string when output the string in a limited space. More...
MG_EXPORT int GUIAPI	GetTabbedTextExtentPoint (HDC hdc, const char *text, int len, int max_extent, int *fit_chars, int *pos_chars, int *dx_chars, SIZE *size)
	Computes the extent of a string when output the formatted string in a limited space. More...
MG_EXPORT int GUIAPI	MB2WCEx (PLOGFONT log_font, void *dest, BOOL wc32, const unsigned char *mstr, int n)
	Converts a multibyte character to a wide character in UCS according to the charset/encoding of the logical font. More...
MG_EXPORT int GUIAPI	WC2MBEx (PLOGFONT log_font, unsigned char *s, Uchar32 wc)
	Converts a wide character in UCS to a multibyte character according to the charset/encoding of the logical font. More...
MG_EXPORT int GUIAPI	MBS2WCSEx (PLOGFONT log_font, void *dest, BOOL wc32, const unsigned char *mstr, int mstr_len, int n, int *conved_mstr_len)
	Converts a multibyte string to a wide character string in UC16 according to the charset/encoding of the logical font. More...

Detailed Description

MiniGUI uses logical font to output text, also uses logical font to parsing the multi-byte characters and words in the text.

Macro Definition Documentation

MB2WC

#define MB2WC	(		log_font,
			dest,
			mstr,
			n
	)		MB2WCEx (log_font, dest, sizeof(wchar_t) == 4, mstr, n)

The backward compatibility version of MB2WCEx.

See also

MB2WCEx

Definition at line 8625 of file gdi.h.

MBS2WCS

#define MBS2WCS	(		log_font,
			dest,
			mstr,
			mstr_len,
			n
	)

Value:

            MBS2WCSEx(log_font, dest, sizeof (wchar_t) == 4, mstr, \
            mstr_len, n, NULL)

The backward compatibility version of MBS2WCSEx.

See also

MBS2WCSEx

Definition at line 8698 of file gdi.h.

WC2MB

#define WC2MB	(		log_font,
			s,
			wc
	)		WC2MBEx (log_font, s, (Uchar32)wc)

The backward compatibility version of WC2MBEx.

See also

WC2MBEx

Definition at line 8653 of file gdi.h.

WCS2MBS

#define WCS2MBS	(		log_font,
			dest,
			wcs,
			wcs_len,
			n
	)

Value:

            WCS2MBSEx (log_font, dest, wcs, wcs_len, sizeof (wchar_t) == 4, \
            n, NULL)

The backward compatibility version of WCS2MBSEx.

See also

WCS2MBSEx

Definition at line 8744 of file gdi.h.

Function Documentation

GetFirstMCharLen()

int GUIAPI GetFirstMCharLen	(	PLOGFONT	log_font,
		const char *	mstr,
		int	len
	)

Retrieve the length of the first multi-byte character in a string.

This function retrieves and returns the length of the first multi-byte character in the string mstr which is len bytes long.

Parameters

log_font	The logical font used to parse the multi-byte string.
mstr	The multi-byte string.
len	The length of the string.

Returns

The length of the first multi-byte character.

See also

GetFirstWord

GetFirstWord()

int GUIAPI GetFirstWord	(	PLOGFONT	log_font,
		const char *	mstr,
		int	len,
		WORDINFO *	word_info
	)

Retrieve the length and info of the first multi-byte word in a string.

This function retrieves the information of the first multi-byte character in the string mstr which is len bytes long, and returns it through word_info. It also returns the full length of the word including the delimiters after the word.

Parameters

log_font	The logical font used to parse the multi-byte string.
mstr	The multi-byte string.
len	The length of the string.
word_info	The pointer to a WORDINFO structure used to return the word information.

Returns

The length of the first multi-byte word.

See also

GetFirstMCharLen, WORDINFO

GetTabbedTextExtentPoint()

int GUIAPI GetTabbedTextExtentPoint	(	HDC	hdc,
		const char *	text,
		int	len,
		int	max_extent,
		int *	fit_chars,
		int *	pos_chars,
		int *	dx_chars,
		SIZE *	size
	)

Computes the extent of a string when output the formatted string in a limited space.

GetTextExtentPoint()

int GUIAPI GetTextExtentPoint	(	HDC	hdc,
		const char *	text,
		int	len,
		int	max_extent,
		int *	fit_chars,
		int *	pos_chars,
		int *	dx_chars,
		SIZE *	size
	)

Computes the extent of a string when output the string in a limited space.

This function computes the extent of the specified string of text text which is len bytes long when output the text in a limited space (max_extent wide). If pos_chars and dx_chars are not NULL, this function will return the positions of each character in the text, and the output position of each character. This function returns the text extent in a SIZE struct pointed to by size, and the width of text as return value.

Parameters

hdc	The device context.
text	The multi-byte string.
len	The length of the string.
max_extent	The width of the limited space.
fit_chars	The number of the characters actually outputed.
pos_chars	The positions of each character in the text will be returned through this pointer.
dx_chars	The output positions of each character in the text will be returned through this pointer.
size	The output extent of the text in the limited space will be returned through this pointer.

Returns

The number of the characters which can be fit to the limited space.

See also

GetFirstMCharLen, GetFirstWord

GetTextMCharInfo()

int GUIAPI GetTextMCharInfo	(	PLOGFONT	log_font,
		const char *	mstr,
		int	len,
		int *	pos_chars
	)

Retrieve positions of multi-byte characters in a string.

This function retrieves position of multi-byte characters in the string mstr which is len bytes long. It returns the positions of characters in the string in an integer array pointed to by pos_chars.

Parameters

log_font	The logical font used to parse the multi-byte string.
mstr	The multi-byte string.
len	The length of the string.
pos_chars	The position of characters will be returned through this array if it is not NULL.

Returns

The number of characters in the multi-byte string.

See also

GetTextWordInfo

GetTextWordInfo()

int GUIAPI GetTextWordInfo	(	PLOGFONT	log_font,
		const char *	mstr,
		int	len,
		int *	pos_words,
		WORDINFO *	info_words
	)

Retrieve information of multi-byte words in a string.

This function retrieves information of multi-byte words in the string mstr which is len bytes long. It returns the positions of words in the string in an integer array pointed to by pos_words if the pointer is not NULL. This function also returns the information of words in a WORDINFO struct array pointed to by info_words when the pointer is not NULL.

Parameters

log_font	The logical font used to parse the multi-byte string.
mstr	The multi-byte string.
len	The length of the string.
pos_words	The position of words will be returned through this array if it is not NULL.
info_words	The words' information will be returned through this array if it is not NULL.

Returns

The number of words in the multi-byte string.

See also

GetTextMCharInfo, WORDINFO

MB2WCEx()

int GUIAPI MB2WCEx	(	PLOGFONT	log_font,
		void *	dest,
		BOOL	wc32,
		const unsigned char *	mstr,
		int	n
	)

Converts a multibyte character to a wide character in UCS according to the charset/encoding of the logical font.

Parameters

log_font	The logical font.
dest	The buffer used to store the wide character; can be NULL.
wc32	Whether the wide char is 32-bit long. TRUE for yes, FALSE for 16-bit long.
mstr	The pointer to the multi-byte character.
n	The length of the multi-byte character.

Returns

If mchar is not NULL, the function returns the number of consumed bytes starting at mchar, or 0 if s points to a null byte, or -1 upon failure.

See also

WC2MBEx, mbtowc

MBS2WCSEx()

int GUIAPI MBS2WCSEx	(	PLOGFONT	log_font,
		void *	dest,
		BOOL	wc32,
		const unsigned char *	mstr,
		int	mstr_len,
		int	n,
		int *	conved_mstr_len
	)

Converts a multibyte string to a wide character string in UC16 according to the charset/encoding of the logical font.

This function is a MiniGUI version of ISO/ANSI mbstowcs function. It converts a multibyte string to a wide character string in UC16. The behaviour of mbstowcs depends on the LC_CTYPE category of the current locale, while MBS2WCS depends on the charset/encoding of MiniGUI logical font.

Parameters

log_font	The logical font.
dest	The buffer used to store the converted wide character string.
wc32	Whether the unicode char is 32-bit long. TRUE for yes, FALSE for 16-bit long.
mstr	The pointer to multibyte string.
mstr_len	The length of the multibyte string in bytes.
n	The length of the buffer in wide characters.
conved_mstr_len	The length of the multibyte string which are converted correctly in bytes will be returned through this pointer, can be NULL.

Returns

The function returns the number of wide characters that make up the converted part of the wide character string, not including the terminating null wide character. If an invalid multibyte sequence was encountered, -1 is returned.

See also

WCS2MBSEx, mbstowcs, mbsrtowcs

WC2MBEx()

int GUIAPI WC2MBEx	(	PLOGFONT	log_font,
		unsigned char *	s,
		Uchar32	wc
	)

Converts a wide character in UCS to a multibyte character according to the charset/encoding of the logical font.

Parameters

log_font	The logical font.
s	The buffer used to store the converted multibyte characters.
wc	The wide character.

Returns

If s is not NULL, the function returns the number of bytes that have been written to the byte array at s. If wc can not be represented as a multibyte sequence (according to the current logfont), -1 is returned.

See also

WC2MB, mbtowc