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	vsnprint.c - 9base - revived minimalist port of Plan 9 userland to Unix
	git clone git://git.suckless.org/9base
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	---
	vsnprint.c (509B)
	---
	1 /* Copyright (c) 2002-2006 Lucent Technologies; see LICENSE */
	2 #include <stdlib.h>
	3 #include <stdarg.h>
	4 #include "plan9.h"
	5 #include "fmt.h"
	6 #include "fmtdef.h"
	7
	8 int
	9 vsnprint(char buf, int len, char fmt, va_list args)
	10 {
	11 Fmt f;
	12
	13 if(len <= 0)
	14 return -1;
	15 f.runes = 0;
	16 f.start = buf;
	17 f.to = buf;
	18 f.stop = buf + len - 1;
	19 f.flush = 0;
	20 f.farg = nil;
	21 f.nfmt = 0;
	22 VA_COPY(f.args,args);
	23 fmtlocaleinit(&f, nil, nil, nil);
	24 dofmt(&f, fmt);
	25 VA_END(f.args);
	26 (char)f.to = '\0';
	27 return (char*)f.to - buf;
	28 }