1 /*
2 * The authors of this software are Rob Pike and Ken Thompson.
3 *
4 * Copyright (c) 2002-2006 by Lucent Technologies.
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose without fee is hereby granted, provided that this entire notice
8 * is included in all copies of any software which is or includes a copy
9 * or modification of this software and in all copies of the supporting
10 * documentation for such software.
11 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
12 * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES
13 * NOR GOOGLE INC MAKE ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING
14 * THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
15 */
16
17 /*
18 * dofmt -- format to a buffer
19 * the number of characters formatted is returned,
20 * or -1 if there was an error.
21 * if the buffer is ever filled, flush is called.
22 * it should reset the buffer and return whether formatting should continue.
23 */
24
25 typedef int (*Fmts)(Fmt*);
26
27 typedef struct Quoteinfo Quoteinfo;
28 struct Quoteinfo
29 {
30 int quoted; /* if set, string must be quoted */
31 int nrunesin; /* number of input runes that can be accepted */
32 int nbytesin; /* number of input bytes that can be accepted */
33 int nrunesout; /* number of runes that will be generated */
34 int nbytesout; /* number of bytes that will be generated */
35 };
36
37 /* Edit .+1,/^$/ |cfn |grep -v static | grep __ */
38 double __Inf(int sign);
39 double __NaN(void);
40 int __badfmt(Fmt *f);
41 int __charfmt(Fmt *f);
42 int __countfmt(Fmt *f);
43 int __efgfmt(Fmt *fmt);
44 int __errfmt(Fmt *f);
45 int __flagfmt(Fmt *f);
46 int __fmtFdFlush(Fmt *f);
47 int __fmtcpy(Fmt *f, const void *vm, int n, int sz);
48 void* __fmtdispatch(Fmt *f, void *fmt, int isrunes);
49 void * __fmtflush(Fmt *f, void *t, int len);
50 void __fmtlock(void);
51 int __fmtpad(Fmt *f, int n);
52 double __fmtpow10(int n);
53 int __fmtrcpy(Fmt *f, const void *vm, int n);
54 void __fmtunlock(void);
55 int __ifmt(Fmt *f);
56 int __isInf(double d, int sign);
57 int __isNaN(double d);
58 int __needsep(int*, char**);
59 int __needsquotes(char *s, int *quotelenp);
60 int __percentfmt(Fmt *f);
61 void __quotesetup(char *s, Rune *r, int nin, int nout, Quoteinfo *q, int sharp, int runesout);
62 int __quotestrfmt(int runesin, Fmt *f);
63 int __rfmtpad(Fmt *f, int n);
64 int __runefmt(Fmt *f);
65 int __runeneedsquotes(Rune *r, int *quotelenp);
66 int __runesfmt(Fmt *f);
67 int __strfmt(Fmt *f);
68
69 #define FMTCHAR(f, t, s, c)\
70 do{\
71 if(t + 1 > (char*)s){\
72 t = (char*)__fmtflush(f, t, 1);\
73 if(t != nil)\
74 s = (char*)f->stop;\
75 else\
76 return -1;\
77 }\
78 *t++ = c;\
79 }while(0)
80
81 #define FMTRCHAR(f, t, s, c)\
82 do{\
83 if(t + 1 > (Rune*)s){\
84 t = (Rune*)__fmtflush(f, t, sizeof(Rune));\
85 if(t != nil)\
86 s = (Rune*)f->stop;\
87 else\
88 return -1;\
89 }\
90 *t++ = c;\
91 }while(0)
92
93 #define FMTRUNE(f, t, s, r)\
94 do{\
95 Rune _rune;\
96 int _runelen;\
97 if(t + UTFmax > (char*)s && t + (_runelen = runelen(r)) > (char*)s){\
98 t = (char*)__fmtflush(f, t, _runelen);\
99 if(t != nil)\
100 s = (char*)f->stop;\
101 else\
102 return -1;\
103 }\
104 if(r < Runeself)\
105 *t++ = r;\
106 else{\
107 _rune = r;\
108 t += runetochar(t, &_rune);\
109 }\
110 }while(0)
111
112 #ifdef va_copy
113 # define VA_COPY(a,b) va_copy(a,b)
114 # define VA_END(a) va_end(a)
115 #else
116 # define VA_COPY(a,b) (a) = (b)
117 # define VA_END(a)
118 #endif
119