#include <errno.h>
#include <limits.h>
#include <string.h>
+#include <stdlib.h>
+#include "libc.h"
struct cookie {
wchar_t **bufp;
mbstate_t mbs;
};
+struct wms_FILE {
+ FILE f;
+ struct cookie c;
+ unsigned char buf[1];
+};
+
static off_t wms_seek(FILE *f, off_t off, int whence)
{
ssize_t base;
static size_t wms_write(FILE *f, const unsigned char *buf, size_t len)
{
struct cookie *c = f->cookie;
- size_t len2;
+ size_t len2 = f->wpos - f->wbase;
wchar_t *newbuf;
+ if (len2) {
+ f->wpos = f->wbase;
+ if (wms_write(f, f->wbase, len2) < len2) return 0;
+ }
if (len + c->pos >= c->space) {
len2 = 2*c->space+1 | c->pos+len+1;
if (len2 > SSIZE_MAX/4) return 0;
FILE *open_wmemstream(wchar_t **bufp, size_t *sizep)
{
- FILE *f;
- struct cookie *c;
+ struct wms_FILE *f;
wchar_t *buf;
- if (!(f=malloc(sizeof *f + sizeof *c))) return 0;
+ if (!(f=malloc(sizeof *f))) return 0;
if (!(buf=malloc(sizeof *buf))) {
free(f);
return 0;
}
- memset(f, 0, sizeof *f + sizeof *c);
- f->cookie = c = (void *)(f+1);
+ memset(&f->f, 0, sizeof f->f);
+ memset(&f->c, 0, sizeof f->c);
+ f->f.cookie = &f->c;
- c->bufp = bufp;
- c->sizep = sizep;
- c->pos = c->len = c->space = *sizep = 0;
- c->buf = *bufp = buf;
+ f->c.bufp = bufp;
+ f->c.sizep = sizep;
+ f->c.pos = f->c.len = f->c.space = *sizep = 0;
+ f->c.buf = *bufp = buf;
*buf = 0;
- f->flags = F_NORD;
- f->fd = -1;
- f->buf = (void *)(c+1);
- f->buf_size = 0;
- f->lbf = EOF;
- f->write = wms_write;
- f->seek = wms_seek;
- f->close = wms_close;
+ f->f.flags = F_NORD;
+ f->f.fd = -1;
+ f->f.buf = f->buf;
+ f->f.buf_size = 0;
+ f->f.lbf = EOF;
+ f->f.write = wms_write;
+ f->f.seek = wms_seek;
+ f->f.close = wms_close;
+
+ if (!libc.threaded) f->f.lock = -1;
- if (!libc.threaded) f->lock = -1;
+ fwide(&f->f, 1);
- return __ofl_add(f);
+ return __ofl_add(&f->f);
}