mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-09 14:50:05 +00:00
120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/* Copyright (C) 1995-2024 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include "libioP.h"
|
|
#include "strfile.h"
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <wchar.h>
|
|
|
|
|
|
struct _IO_FILE_wmemstream
|
|
{
|
|
_IO_strfile _sf;
|
|
wchar_t **bufloc;
|
|
size_t *sizeloc;
|
|
};
|
|
|
|
|
|
/* Open a stream that writes into a malloc'd buffer that is expanded as
|
|
necessary. *BUFLOC and *SIZELOC are updated with the buffer's location
|
|
and the number of characters written on fflush or fclose. */
|
|
FILE *
|
|
open_wmemstream (wchar_t **bufloc, size_t *sizeloc)
|
|
{
|
|
struct locked_FILE
|
|
{
|
|
struct _IO_FILE_wmemstream fp;
|
|
#ifdef _IO_MTSAFE_IO
|
|
_IO_lock_t lock;
|
|
#endif
|
|
struct _IO_wide_data wd;
|
|
} *new_f;
|
|
wchar_t *buf;
|
|
|
|
new_f = (struct locked_FILE *) malloc (sizeof (struct locked_FILE));
|
|
if (new_f == NULL)
|
|
return NULL;
|
|
#ifdef _IO_MTSAFE_IO
|
|
new_f->fp._sf._sbf._f._lock = &new_f->lock;
|
|
#endif
|
|
|
|
buf = calloc (1, BUFSIZ);
|
|
if (buf == NULL)
|
|
{
|
|
free (new_f);
|
|
return NULL;
|
|
}
|
|
_IO_no_init (&new_f->fp._sf._sbf._f, 0, 0, &new_f->wd, &_IO_wmem_jumps);
|
|
_IO_fwide (&new_f->fp._sf._sbf._f, 1);
|
|
_IO_wstr_init_static (&new_f->fp._sf._sbf._f, buf,
|
|
BUFSIZ / sizeof (wchar_t), buf);
|
|
new_f->fp._sf._sbf._f._flags2 &= ~_IO_FLAGS2_USER_WBUF;
|
|
new_f->fp._sf._s._allocate_buffer_unused = (_IO_alloc_type) malloc;
|
|
new_f->fp._sf._s._free_buffer_unused = (_IO_free_type) free;
|
|
|
|
new_f->fp.bufloc = bufloc;
|
|
new_f->fp.sizeloc = sizeloc;
|
|
|
|
/* Disable single thread optimization. BZ 21735. */
|
|
new_f->fp._sf._sbf._f._flags2 |= _IO_FLAGS2_NEED_LOCK;
|
|
|
|
return (FILE *) &new_f->fp._sf._sbf;
|
|
}
|
|
|
|
|
|
int
|
|
_IO_wmem_sync (FILE *fp)
|
|
{
|
|
struct _IO_FILE_wmemstream *mp = (struct _IO_FILE_wmemstream *) fp;
|
|
|
|
if (fp->_wide_data->_IO_write_ptr == fp->_wide_data->_IO_write_end)
|
|
{
|
|
_IO_wstr_overflow (fp, '\0');
|
|
--fp->_wide_data->_IO_write_ptr;
|
|
}
|
|
|
|
*mp->bufloc = fp->_wide_data->_IO_write_base;
|
|
*mp->sizeloc = (fp->_wide_data->_IO_write_ptr
|
|
- fp->_wide_data->_IO_write_base);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
void
|
|
_IO_wmem_finish (FILE *fp, int dummy)
|
|
{
|
|
struct _IO_FILE_wmemstream *mp = (struct _IO_FILE_wmemstream *) fp;
|
|
|
|
*mp->bufloc = (wchar_t *) realloc (fp->_wide_data->_IO_write_base,
|
|
(fp->_wide_data->_IO_write_ptr
|
|
- fp->_wide_data->_IO_write_base + 1)
|
|
* sizeof (wchar_t));
|
|
if (*mp->bufloc != NULL)
|
|
{
|
|
size_t len = (fp->_wide_data->_IO_write_ptr
|
|
- fp->_wide_data->_IO_write_base);
|
|
(*mp->bufloc)[len] = '\0';
|
|
*mp->sizeloc = len;
|
|
|
|
fp->_wide_data->_IO_buf_base = NULL;
|
|
}
|
|
|
|
_IO_wstr_finish (fp, 0);
|
|
}
|