1 /* Copyright (c) 2002-2006 Lucent Technologies; see LICENSE */
2 #include <stdarg.h>
3 #include <string.h>
4 #include "plan9.h"
5 #include "fmt.h"
6 #include "fmtdef.h"
7 
8 /* format the output into f->to and return the number of characters fmted  */
9 
10 /* BUG: THIS FILE IS NOT UPDATED TO THE  NEW SPEC */
11 int
12 dorfmt(Fmt *f, const Rune *fmt)
13 {
14 	Rune *rt, *rs;
15 	int r;
16 	char *t, *s;
17 	int nfmt;
18 
19 	nfmt = f->nfmt;
20 	for(;;){
21 		if(f->runes){
22 			rt = (Rune*)f->to;
23 			rs = (Rune*)f->stop;
24 			while((r = *fmt++) && r != '%'){
25 				FMTRCHAR(f, rt, rs, r);
26 			}
27 			f->nfmt += rt - (Rune *)f->to;
28 			f->to = rt;
29 			if(!r)
30 				return f->nfmt - nfmt;
31 			f->stop = rs;
32 		}else{
33 			t = (char*)f->to;
34 			s = (char*)f->stop;
35 			while((r = *fmt++) && r != '%'){
36 				FMTRUNE(f, t, f->stop, r);
37 			}
38 			f->nfmt += t - (char *)f->to;
39 			f->to = t;
40 			if(!r)
41 				return f->nfmt - nfmt;
42 			f->stop = s;
43 		}
44 
45 		fmt = (Rune*)__fmtdispatch(f, (Rune*)fmt, 1);
46 		if(fmt == nil)
47 			return -1;
48 	}
49 	return 0;		/* not reached */
50 }