plan9fox/sys/src/libbio/bvprint.c
2011-03-30 19:35:09 +03:00

38 lines
584 B
C

#include <u.h>
#include <libc.h>
#include <bio.h>
static int
fmtBflush(Fmt *f)
{
Biobufhdr *bp;
bp = f->farg;
bp->ocount = (char*)f->to - (char*)f->stop;
if(Bflush(bp) < 0)
return 0;
f->stop = bp->ebuf;
f->to = (char*)f->stop + bp->ocount;
f->start = f->to;
return 1;
}
int
Bvprint(Biobufhdr *bp, char *fmt, va_list arg)
{
int n;
Fmt f;
f.runes = 0;
f.stop = bp->ebuf;
f.start = (char*)f.stop + bp->ocount;
f.to = f.start;
f.flush = fmtBflush;
f.farg = bp;
f.nfmt = 0;
f.args = arg;
n = dofmt(&f, fmt);
bp->ocount = (char*)f.to - (char*)f.stop;
return n;
}