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/*-
* Copyright (c) 2003-2007 Tim Kientzle
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "archive_platform.h"
__FBSDID("$FreeBSD$");
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include "archive.h"
#include "archive_write_private.h"
struct write_grzip {
struct archive_write_program_data *pdata;
};
static int archive_write_grzip_open(struct archive_write_filter *);
static int archive_write_grzip_options(struct archive_write_filter *,
const char *, const char *);
static int archive_write_grzip_write(struct archive_write_filter *,
const void *, size_t);
static int archive_write_grzip_close(struct archive_write_filter *);
static int archive_write_grzip_free(struct archive_write_filter *);
int
archive_write_add_filter_grzip(struct archive *_a)
{
struct archive_write_filter *f = __archive_write_allocate_filter(_a);
struct write_grzip *data;
archive_check_magic(_a, ARCHIVE_WRITE_MAGIC,
ARCHIVE_STATE_NEW, "archive_write_add_filter_grzip");
data = calloc(1, sizeof(*data));
if (data == NULL) {
archive_set_error(_a, ENOMEM, "Can't allocate memory");
return (ARCHIVE_FATAL);
}
data->pdata = __archive_write_program_allocate();
if (data->pdata == NULL) {
free(data);
archive_set_error(_a, ENOMEM, "Can't allocate memory");
return (ARCHIVE_FATAL);
}
f->name = "grzip";
f->code = ARCHIVE_FILTER_GRZIP;
f->data = data;
f->open = archive_write_grzip_open;
f->options = archive_write_grzip_options;
f->write = archive_write_grzip_write;
f->close = archive_write_grzip_close;
f->free = archive_write_grzip_free;
/* Note: This filter always uses an external program, so we
* return "warn" to inform of the fact. */
archive_set_error(_a, ARCHIVE_ERRNO_MISC,
"Using external grzip program for grzip compression");
return (ARCHIVE_WARN);
}
static int
archive_write_grzip_options(struct archive_write_filter *f, const char *key,
const char *value)
{
(void)f; /* UNUSED */
(void)key; /* UNUSED */
(void)value; /* UNUSED */
/* Note: The "warn" return is just to inform the options
* supervisor that we didn't handle it. It will generate
* a suitable error if no one used this option. */
return (ARCHIVE_WARN);
}
static int
archive_write_grzip_open(struct archive_write_filter *f)
{
struct write_grzip *data = (struct write_grzip *)f->data;
return __archive_write_program_open(f, data->pdata, "grzip");
}
static int
archive_write_grzip_write(struct archive_write_filter *f,
const void *buff, size_t length)
{
struct write_grzip *data = (struct write_grzip *)f->data;
return __archive_write_program_write(f, data->pdata, buff, length);
}
static int
archive_write_grzip_close(struct archive_write_filter *f)
{
struct write_grzip *data = (struct write_grzip *)f->data;
return __archive_write_program_close(f, data->pdata);
}
static int
archive_write_grzip_free(struct archive_write_filter *f)
{
struct write_grzip *data = (struct write_grzip *)f->data;
__archive_write_program_free(data->pdata);
free(data);
return (ARCHIVE_OK);
}
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