wmii/lib/libstuff/fmt/bvlprint.c
2010-06-06 05:07:24 -04:00

59 lines
1023 B
C

/* Copyright ©2010 Kris Maglione <maglione.k at Gmail>
* Copyright ©2002 by Lucent Technologies.
* See LICENSE file for license details.
*/
#include "fmtdef.h"
#include <bio.h>
static int
fmtBlflush(Fmt *f)
{
mbstate_t state;
Biobuf *bp;
Rune *rp, *rend;
int res;
bp = f->farg;
rend = f->to;
state = (mbstate_t){0};
for(rp=(Rune*)f->start; rp < rend; rp++) {
if(MB_LEN_MAX + bp->ocount > 0 && Bflush(bp) < 0)
return 0;
res = wcrtomb((char*)bp->ebuf + bp->ocount, *rp, &state);
if(res == -1)
Bputc(bp, '?');
else
bp->ocount += res;
}
f->to = f->start;
return 1;
}
int
Bvlprint(Biobuf *bp, const char *fmt, va_list args)
{
Fmt f;
Rune buf[256];
int res;
if(utf8locale())
return Bvprint(bp, fmt, args);
f.runes = 1;
f.start = (char*)buf;
f.to = (char*)buf;
f.stop = (char*)(buf + nelem(buf) - 1);
f.flush = fmtBlflush;
f.farg = bp;
f.nfmt = 0;
va_copy(f.args, args);
res = dofmt(&f, fmt);
va_end(f.args);
if(res > 0 && fmtBlflush(&f) == 0)
return -1;
return res;
}