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	dorfmt.c - 9base - revived minimalist port of Plan 9 userland to Unix
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	dorfmt.c (985B)
	---
	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 fmte…
	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 }