ref: 6042bb8adffe111049edfcb8b2eb1ad84814ed69
dir: /libkern/fmtdef.h/
/*
* 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