1 /* 2 * dofmt -- format to a buffer 3 * the number of characters formatted is returned, 4 * or -1 if there was an error. 5 * if the buffer is ever filled, flush is called. 6 * it should reset the buffer and return whether formatting should continue. 7 */ 8 9 typedef int (*Fmts)(Fmt*); 10 11 typedef struct Quoteinfo Quoteinfo; 12 struct Quoteinfo 13 { 14 int quoted; /* if set, string must be quoted */ 15 int nrunesin; /* number of input runes that can be accepted */ 16 int nbytesin; /* number of input bytes that can be accepted */ 17 int nrunesout; /* number of runes that will be generated */ 18 int nbytesout; /* number of bytes that will be generated */ 19 }; 20 21 /* Edit .+1,/^$/ |cfn |grep -v static | grep __ */ 22 double __Inf(int sign); 23 double __NaN(void); 24 int __badfmt(Fmt *f); 25 int __charfmt(Fmt *f); 26 int __countfmt(Fmt *f); 27 int __efgfmt(Fmt *fmt); 28 int __errfmt(Fmt *f); 29 int __flagfmt(Fmt *f); 30 int __fmtFdFlush(Fmt *f); 31 int __fmtcpy(Fmt *f, const void *vm, int n, int sz); 32 void* __fmtdispatch(Fmt *f, void *fmt, int isrunes); 33 void * __fmtflush(Fmt *f, void *t, int len); 34 void __fmtlock(void); 35 int __fmtpad(Fmt *f, int n); 36 double __fmtpow10(int n); 37 int __fmtrcpy(Fmt *f, const void *vm, int n); 38 void __fmtunlock(void); 39 int __ifmt(Fmt *f); 40 int __isInf(double d, int sign); 41 int __isNaN(double d); 42 int __needsquotes(char *s, int *quotelenp); 43 int __percentfmt(Fmt *f); 44 void __quotesetup(char *s, Rune *r, int nin, int nout, Quoteinfo *q, int sharp, int runesout); 45 int __quotestrfmt(int runesin, Fmt *f); 46 int __rfmtpad(Fmt *f, int n); 47 int __runefmt(Fmt *f); 48 int __runeneedsquotes(Rune *r, int *quotelenp); 49 int __runesfmt(Fmt *f); 50 int __strfmt(Fmt *f); 51 52 #define FMTCHAR(f, t, s, c)\ 53 do{\ 54 if(t + 1 > (char*)s){\ 55 t = __fmtflush(f, t, 1);\ 56 if(t != nil)\ 57 s = f->stop;\ 58 else\ 59 return -1;\ 60 }\ 61 *t++ = c;\ 62 }while(0) 63 64 #define FMTRCHAR(f, t, s, c)\ 65 do{\ 66 if(t + 1 > (Rune*)s){\ 67 t = __fmtflush(f, t, sizeof(Rune));\ 68 if(t != nil)\ 69 s = f->stop;\ 70 else\ 71 return -1;\ 72 }\ 73 *t++ = c;\ 74 }while(0) 75 76 #define FMTRUNE(f, t, s, r)\ 77 do{\ 78 Rune _rune;\ 79 int _runelen;\ 80 if(t + UTFmax > (char*)s && t + (_runelen = runelen(r)) > (char*)s){\ 81 t = __fmtflush(f, t, _runelen);\ 82 if(t != nil)\ 83 s = f->stop;\ 84 else\ 85 return -1;\ 86 }\ 87 if(r < Runeself)\ 88 *t++ = r;\ 89 else{\ 90 _rune = r;\ 91 t += runetochar(t, &_rune);\ 92 }\ 93 }while(0) 94 95 #ifdef va_copy 96 # define VA_COPY(a,b) va_copy(a,b) 97 # define VA_END(a) va_end(a) 98 #else 99 # define VA_COPY(a,b) (a) = (b) 100 # define VA_END(a) 101 #endif 102 103 #define PLAN9PORT 104