/* * The authors of this software are Rob Pike and Ken Thompson. *              Copyright (c) 2002 by Lucent Technologies. * Permission to use, copy, modify, and distribute this software for any * purpose without fee is hereby granted, provided that this entire notice * is included in all copies of any software which is or includes a copy * or modification of this software and in all copies of the supporting * documentation for such software. * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. *//* * dofmt -- format to a buffer * the number of characters formatted is returned, * or -1 if there was an error. * if the buffer is ever filled, flush is called. * it should reset the buffer and return whether formatting should continue. */ typedef int (*Fmts)(Fmt*); typedef struct Quoteinfo Quoteinfo;struct Quoteinfo{	int	quoted;		/* if set, string must be quoted */	int	nrunesin;	/* number of input runes that can be accepted */	int	nbytesin;	/* number of input bytes that can be accepted */	int	nrunesout;	/* number of runes that will be generated */	int	nbytesout;	/* number of bytes that will be generated */}; void	*_fmtflush(Fmt*, void*, int);void	*_fmtdispatch(Fmt*, void*, int);int	_floatfmt(Fmt*, double);int	_fmtpad(Fmt*, int);int	_rfmtpad(Fmt*, int);int	_fmtFdFlush(Fmt*); int	_efgfmt(Fmt*);int	_charfmt(Fmt*);int	_countfmt(Fmt*);int	_flagfmt(Fmt*);int	_percentfmt(Fmt*);int	_ifmt(Fmt*);int	_runefmt(Fmt*);int	_runesfmt(Fmt*);int	_strfmt(Fmt*);int	_badfmt(Fmt*);int	_fmtcpy(Fmt*, void*, int, int);int	_fmtrcpy(Fmt*, void*, int n); void	_fmtlock(void);void	_fmtunlock(void); #define FMTCHAR(f, t, s, c)\	do{\	if(t + 1 > (char*)s){\		t = _fmtflush(f, t, 1);\		if(t != nil)\			s = f->stop;\		else\			return -1;\	}\	*t++ = c;\	}while(0) #define FMTRCHAR(f, t, s, c)\	do{\	if(t + 1 > (Rune*)s){\		t = _fmtflush(f, t, sizeof(Rune));\		if(t != nil)\			s = f->stop;\		else\			return -1;\	}\	*t++ = c;\	}while(0) #define FMTRUNE(f, t, s, r)\	do{\	Rune _rune;\	int _runelen;\	if(t + UTFmax > (char*)s && t + (_runelen = runelen(r)) > (char*)s){\		t = _fmtflush(f, t, _runelen);\		if(t != nil)\			s = f->stop;\		else\			return -1;\	}\	if(r < Runeself)\		*t++ = r;\	else{\		_rune = r;\		t += runetochar(t, &_rune);\	}\	}while(0) #ifndef va_copy#define	va_copy(a, b) ((a) = (b))#endif