ref: 1018d7a7091fd5e0433f501a3474cdc3fec322cc
dir: /lib9/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