73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
|
|
* This file is part of ltrace.
|
|
* Copyright (C) 2012 Petr Machata, Red Hat Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* This program 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
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
|
|
* 02110-1301 USA
|
|
*/
|
|
|
|
/* _GNU_SOURCE may be necessary for open_memstream visibility (see
|
|
* configure.ac), and there's no harm defining it just in case. */
|
|
#define _GNU_SOURCE
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "config.h"
|
|
#include "memstream.h"
|
|
|
|
int
|
|
memstream_init(struct memstream *memstream)
|
|
{
|
|
#if HAVE_OPEN_MEMSTREAM
|
|
memstream->stream = open_memstream(&memstream->buf,
|
|
&memstream->size);
|
|
#else
|
|
memstream->stream = tmpfile();
|
|
memstream->buf = NULL;
|
|
#endif
|
|
return memstream->stream != NULL ? 0 : -1;
|
|
}
|
|
|
|
int
|
|
memstream_close(struct memstream *memstream)
|
|
{
|
|
#if !defined(HAVE_OPEN_MEMSTREAM) || !HAVE_OPEN_MEMSTREAM
|
|
if (fseek(memstream->stream, 0, SEEK_END) < 0) {
|
|
fail:
|
|
fclose(memstream->stream);
|
|
return -1;
|
|
}
|
|
memstream->size = ftell(memstream->stream);
|
|
if (memstream->size == (size_t)-1)
|
|
goto fail;
|
|
memstream->buf = malloc(memstream->size);
|
|
if (memstream->buf == NULL)
|
|
goto fail;
|
|
|
|
rewind(memstream->stream);
|
|
if (fread(memstream->buf, 1, memstream->size, memstream->stream)
|
|
< memstream->size)
|
|
goto fail;
|
|
#endif
|
|
|
|
return fclose(memstream->stream) == 0 ? 0 : -1;
|
|
}
|
|
|
|
void
|
|
memstream_destroy(struct memstream *memstream)
|
|
{
|
|
free(memstream->buf);
|
|
}
|