void
fmtzbinit(Fmt *f, ZBlock *b)
{
memset(f, 0, sizeof *f);
#ifdef PLAN9PORT
fmtlocaleinit(f, nil, nil, nil);
#endif
f->start = b->data;
f->to = f->start;
f->stop = (char*)f->start + b->len;
}
/*
* initialize an output buffer for buffered printing
*/
int
fmtfdinit(Fmt *f, int fd, char *buf, int size)
{
f->runes = 0;
f->start = buf;
f->to = buf;
f->stop = buf + size;
f->flush = __fmtFdFlush;
f->farg = (void*)(uintptr_t)fd;
f->flags = 0;
f->nfmt = 0;
fmtlocaleinit(f, nil, nil, nil);
return 0;
}
int
fmtstrinit(Fmt *f)
{
int n;
memset(f, 0, sizeof *f);
f->runes = 0;
n = 32;
f->start = malloc(n);
if(f->start == nil)
return -1;
f->to = f->start;
f->stop = (char*)f->start + n - 1;
f->flush = fmtStrFlush;
f->farg = (void*)(uintptr)n;
f->nfmt = 0;
fmtlocaleinit(f, nil, nil, nil);
return 0;
}
int
runefmtstrinit(Fmt *f)
{
int n;
memset(f, 0, sizeof *f);
f->runes = 1;
n = 32;
f->start = malloc(sizeof(Rune)*n);
if(f->start == nil)
return -1;
f->to = f->start;
f->stop = (Rune*)f->start + n - 1;
f->flush = runeFmtStrFlush;
f->farg = (void*)(uintptr_t)n;
f->nfmt = 0;
fmtlocaleinit(f, nil, nil, nil);
return 0;
}
int
Bvprint(Biobuf *bp, const 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;
fmtlocaleinit(&f, nil, nil, nil);
n = fmtvprint(&f, fmt, arg);
bp->ocount = (char*)f.to - (char*)f.stop;
if(n == 0)
n = f.nfmt;
return n;
}
char*
vseprint(char *buf, char *e, char *fmt, va_list args)
{
Fmt f;
if(e <= buf)
return nil;
f.runes = 0;
f.start = buf;
f.to = buf;
f.stop = e - 1;
f.flush = 0;
f.farg = nil;
f.nfmt = 0;
VA_COPY(f.args,args);
fmtlocaleinit(&f, nil, nil, nil);
dofmt(&f, fmt);
VA_END(f.args);
*(char*)f.to = '\0';
return (char*)f.to;
}
