fiss

Friedel's Initialization and Service Supervision
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vsnprint.c (520B)

      1 /* Copyright (c) 2002-2006 Lucent Technologies; see LICENSE */
      2 #include "fmt.h"
      3 #include "fmtdef.h"
      4 #include "plan9.h"
      5 
      6 #include <stdarg.h>
      7 #include <stdlib.h>
      8 
      9 int vsnprint(char* buf, int len, char* fmt, va_list args) {
     10 	Fmt f;
     11 
     12 	if (len <= 0)
     13 		return -1;
     14 	f.runes = 0;
     15 	f.start = buf;
     16 	f.to    = buf;
     17 	f.stop  = buf + len - 1;
     18 	f.flush = 0;
     19 	f.farg  = nil;
     20 	f.nfmt  = 0;
     21 	VA_COPY(f.args, args);
     22 	fmtlocaleinit(&f, nil, nil, nil);
     23 	dofmt(&f, fmt);
     24 	VA_END(f.args);
     25 	*(char*) f.to = '\0';
     26 	return (char*) f.to - buf;
     27 }