Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>

int
vsnprint(char *buf, int len, char *fmt, va_list args)
{
        Fmt f;

        if(len <= 0)
                return -1;
        f.runes = 0;
        f.start = buf;
        f.to = buf;
        f.stop = buf + len - 1;
        f.flush = nil;
        f.farg = nil;
        f.nfmt = 0;
        f.args = args;
        dofmt(&f, fmt);
        *(char*)f.to = '\0';
        return (char*)f.to - buf;
}