38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/*
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* The authors of this software are Rob Pike and Ken Thompson.
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* Copyright (c) 2002 by Lucent Technologies.
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* Permission to use, copy, modify, and distribute this software for any
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* purpose without fee is hereby granted, provided that this entire notice
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* is included in all copies of any software which is or includes a copy
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* or modification of this software and in all copies of the supporting
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* documentation for such software.
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* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY
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* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
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* OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
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*/
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#include <stdlib.h>
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#include <stdarg.h>
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#include "fmt.h"
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#include "fmtdef.h"
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int
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vsnprint(char *buf, int len, char *fmt, va_list args)
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{
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Fmt f;
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if(len <= 0)
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return -1;
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f.runes = 0;
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f.start = buf;
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f.to = buf;
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f.stop = buf + len - 1;
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f.flush = 0;
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f.farg = nil;
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f.nfmt = 0;
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f.args = args;
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dofmt(&f, fmt);
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*(char*)f.to = '\0';
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return (char*)f.to - buf;
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}
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