122 lines
3 KiB
C
122 lines
3 KiB
C
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/*
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* The authors of this software are Rob Pike and Ken Thompson.
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* Copyright (c) 2002 by Lucent Technologies.
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* Permission to use, copy, modify, and distribute this software for any
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* purpose without fee is hereby granted, provided that this entire notice
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* is included in all copies of any software which is or includes a copy
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* or modification of this software and in all copies of the supporting
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* documentation for such software.
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* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY
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* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
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* OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
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*/
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/*
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* dofmt -- format to a buffer
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* the number of characters formatted is returned,
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* or -1 if there was an error.
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* if the buffer is ever filled, flush is called.
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* it should reset the buffer and return whether formatting should continue.
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*/
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#define uchar _fmtuchar
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#define ushort _fmtushort
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#define uint _fmtuint
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#define ulong _fmtulong
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#define vlong _fmtvlong
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#define uvlong _fmtuvlong
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#define USED(x) if(x);else
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typedef unsigned char uchar;
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typedef unsigned short ushort;
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typedef unsigned int uint;
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typedef unsigned long ulong;
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#ifndef NOVLONGS
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typedef unsigned long long uvlong;
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typedef long long vlong;
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#endif
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/* #define nil 0 /* cannot be ((void*)0) because used for function pointers */
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typedef int (*Fmts)(Fmt*);
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typedef struct Quoteinfo Quoteinfo;
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struct Quoteinfo
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{
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int quoted; /* if set, string must be quoted */
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int nrunesin; /* number of input runes that can be accepted */
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int nbytesin; /* number of input bytes that can be accepted */
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int nrunesout; /* number of runes that will be generated */
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int nbytesout; /* number of bytes that will be generated */
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};
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void *__fmtflush(Fmt*, void*, int);
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void *__fmtdispatch(Fmt*, void*, int);
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int __floatfmt(Fmt*, double);
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int __fmtpad(Fmt*, int);
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int __rfmtpad(Fmt*, int);
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int __fmtFdFlush(Fmt*);
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int __efgfmt(Fmt*);
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int __charfmt(Fmt*);
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int __runefmt(Fmt*);
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int __runesfmt(Fmt*);
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int __countfmt(Fmt*);
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int __flagfmt(Fmt*);
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int __percentfmt(Fmt*);
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int __ifmt(Fmt*);
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int __strfmt(Fmt*);
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int __badfmt(Fmt*);
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int __fmtcpy(Fmt*, const void*, int, int);
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int __fmtrcpy(Fmt*, const void*, int n);
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int __errfmt(Fmt *f);
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double __fmtpow10(int);
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void __fmtlock(void);
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void __fmtunlock(void);
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#define FMTCHAR(f, t, s, c)\
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do{\
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if(t + 1 > (char*)s){\
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t = __fmtflush(f, t, 1);\
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if(t != nil)\
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s = f->stop;\
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else\
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return -1;\
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}\
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*t++ = c;\
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}while(0)
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#define FMTRCHAR(f, t, s, c)\
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do{\
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if(t + 1 > (Rune*)s){\
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t = __fmtflush(f, t, sizeof(Rune));\
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if(t != nil)\
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s = f->stop;\
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else\
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return -1;\
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}\
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*t++ = c;\
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}while(0)
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#define FMTRUNE(f, t, s, r)\
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do{\
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Rune _rune;\
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int _runelen;\
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if(t + UTFmax > (char*)s && t + (_runelen = runelen(r)) > (char*)s){\
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t = __fmtflush(f, t, _runelen);\
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if(t != nil)\
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s = f->stop;\
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else\
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return -1;\
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}\
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if(r < Runeself)\
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*t++ = r;\
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else{\
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_rune = r;\
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t += runetochar(t, &_rune);\
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}\
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}while(0)
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