2013-02-09 21:17:57 +04:00
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/*-
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* Copyright (c) 2012 Michihiro NAKAJIMA
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "archive_platform.h"
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__FBSDID("$FreeBSD$");
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//#undef HAVE_LZO_LZOCONF_H
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//#undef HAVE_LZO_LZO1X_H
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#include <time.h>
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#ifdef HAVE_LZO_LZOCONF_H
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#include <lzo/lzoconf.h>
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#endif
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#ifdef HAVE_LZO_LZO1X_H
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#include <lzo/lzo1x.h>
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#endif
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#include "archive.h"
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#include "archive_string.h"
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#include "archive_endian.h"
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#include "archive_write_private.h"
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enum lzo_method {
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METHOD_LZO1X_1 = 1,
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METHOD_LZO1X_1_15 = 2,
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METHOD_LZO1X_999 = 3
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};
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struct write_lzop {
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int compression_level;
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#if defined(HAVE_LZO_LZOCONF_H) && defined(HAVE_LZO_LZO1X_H)
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unsigned char *uncompressed;
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size_t uncompressed_buffer_size;
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size_t uncompressed_avail_bytes;
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unsigned char *compressed;
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size_t compressed_buffer_size;
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enum lzo_method method;
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unsigned char level;
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lzo_voidp work_buffer;
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lzo_uint32 work_buffer_size;
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char header_written;
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#else
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struct archive_write_program_data *pdata;
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#endif
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};
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static int archive_write_lzop_open(struct archive_write_filter *);
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static int archive_write_lzop_options(struct archive_write_filter *,
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const char *, const char *);
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static int archive_write_lzop_write(struct archive_write_filter *,
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const void *, size_t);
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static int archive_write_lzop_close(struct archive_write_filter *);
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static int archive_write_lzop_free(struct archive_write_filter *);
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#if defined(HAVE_LZO_LZOCONF_H) && defined(HAVE_LZO_LZO1X_H)
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/* Maximum block size. */
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#define BLOCK_SIZE (256 * 1024)
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2016-04-30 20:26:35 +03:00
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/* Block information is composed of uncompressed size(4 bytes),
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2013-02-09 21:17:57 +04:00
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* compressed size(4 bytes) and the checksum of uncompressed data(4 bytes)
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* in this lzop writer. */
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#define BLOCK_INfO_SIZE 12
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#define HEADER_VERSION 9
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#define HEADER_LIBVERSION 11
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#define HEADER_METHOD 15
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#define HEADER_LEVEL 16
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#define HEADER_MTIME_LOW 25
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#define HEADER_MTIME_HIGH 29
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#define HEADER_H_CHECKSUM 34
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/*
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* Header template.
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*/
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static const unsigned char header[] = {
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/* LZOP Magic code 9 bytes */
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0x89, 0x4c, 0x5a, 0x4f, 0x00, 0x0d, 0x0a, 0x1a, 0x0a,
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/* LZOP utility version(fake data) 2 bytes */
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0x10, 0x30,
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/* LZO library version 2 bytes */
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0x09, 0x40,
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/* Minimum required LZO library version 2 bytes */
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0x09, 0x40,
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/* Method */
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1,
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/* Level */
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5,
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/* Flags 4 bytes
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* -OS Unix
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* -Stdout
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* -Stdin
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* -Adler32 used for uncompressed data 4 bytes */
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0x03, 0x00, 0x00, 0x0d,
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/* Mode (AE_IFREG | 0644) 4 bytes */
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0x00, 0x00, 0x81, 0xa4,
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/* Mtime low 4 bytes */
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0x00, 0x00, 0x00, 0x00,
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/* Mtime high 4 bytes */
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0x00, 0x00, 0x00, 0x00,
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/* Filename length */
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0x00,
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/* Header checksum 4 bytes */
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0x00, 0x00, 0x00, 0x00,
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};
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#endif
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int
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archive_write_add_filter_lzop(struct archive *_a)
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{
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struct archive_write_filter *f = __archive_write_allocate_filter(_a);
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struct write_lzop *data;
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archive_check_magic(_a, ARCHIVE_WRITE_MAGIC,
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ARCHIVE_STATE_NEW, "archive_write_add_filter_lzop");
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data = calloc(1, sizeof(*data));
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if (data == NULL) {
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archive_set_error(_a, ENOMEM, "Can't allocate memory");
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return (ARCHIVE_FATAL);
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}
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f->name = "lzop";
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f->code = ARCHIVE_FILTER_LZOP;
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f->data = data;
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f->open = archive_write_lzop_open;
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f->options = archive_write_lzop_options;
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f->write = archive_write_lzop_write;
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f->close = archive_write_lzop_close;
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f->free = archive_write_lzop_free;
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#if defined(HAVE_LZO_LZOCONF_H) && defined(HAVE_LZO_LZO1X_H)
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if (lzo_init() != LZO_E_OK) {
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free(data);
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archive_set_error(_a, ARCHIVE_ERRNO_MISC,
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"lzo_init(type check) failed");
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return (ARCHIVE_FATAL);
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}
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if (lzo_version() < 0x940) {
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free(data);
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archive_set_error(_a, ARCHIVE_ERRNO_MISC,
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"liblzo library is too old(%s < 0.940)",
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lzo_version_string());
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return (ARCHIVE_FATAL);
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}
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data->compression_level = 5;
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return (ARCHIVE_OK);
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#else
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2016-04-30 20:26:35 +03:00
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data->pdata = __archive_write_program_allocate("lzop");
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2013-02-09 21:17:57 +04:00
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if (data->pdata == NULL) {
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free(data);
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archive_set_error(_a, ENOMEM, "Can't allocate memory");
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return (ARCHIVE_FATAL);
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}
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data->compression_level = 0;
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/* Note: We return "warn" to inform of using an external lzop
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* program. */
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archive_set_error(_a, ARCHIVE_ERRNO_MISC,
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"Using external lzop program for lzop compression");
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return (ARCHIVE_WARN);
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#endif
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}
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static int
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archive_write_lzop_free(struct archive_write_filter *f)
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{
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struct write_lzop *data = (struct write_lzop *)f->data;
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#if defined(HAVE_LZO_LZOCONF_H) && defined(HAVE_LZO_LZO1X_H)
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free(data->uncompressed);
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free(data->compressed);
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free(data->work_buffer);
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#else
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__archive_write_program_free(data->pdata);
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#endif
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free(data);
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return (ARCHIVE_OK);
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}
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static int
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archive_write_lzop_options(struct archive_write_filter *f, const char *key,
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const char *value)
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{
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struct write_lzop *data = (struct write_lzop *)f->data;
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if (strcmp(key, "compression-level") == 0) {
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if (value == NULL || !(value[0] >= '1' && value[0] <= '9') ||
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value[1] != '\0')
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return (ARCHIVE_WARN);
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data->compression_level = value[0] - '0';
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return (ARCHIVE_OK);
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}
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/* Note: The "warn" return is just to inform the options
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* supervisor that we didn't handle it. It will generate
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* a suitable error if no one used this option. */
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return (ARCHIVE_WARN);
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}
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#if defined(HAVE_LZO_LZOCONF_H) && defined(HAVE_LZO_LZO1X_H)
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static int
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archive_write_lzop_open(struct archive_write_filter *f)
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{
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struct write_lzop *data = (struct write_lzop *)f->data;
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int ret;
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ret = __archive_write_open_filter(f->next_filter);
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if (ret != ARCHIVE_OK)
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return (ret);
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switch (data->compression_level) {
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case 1:
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data->method = METHOD_LZO1X_1_15; data->level = 1; break;
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default:
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case 2: case 3: case 4: case 5: case 6:
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data->method = METHOD_LZO1X_1; data->level = 5; break;
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case 7:
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data->method = METHOD_LZO1X_999; data->level = 7; break;
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case 8:
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data->method = METHOD_LZO1X_999; data->level = 8; break;
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case 9:
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data->method = METHOD_LZO1X_999; data->level = 9; break;
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}
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switch (data->method) {
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case METHOD_LZO1X_1:
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data->work_buffer_size = LZO1X_1_MEM_COMPRESS; break;
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case METHOD_LZO1X_1_15:
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data->work_buffer_size = LZO1X_1_15_MEM_COMPRESS; break;
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case METHOD_LZO1X_999:
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data->work_buffer_size = LZO1X_999_MEM_COMPRESS; break;
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}
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if (data->work_buffer == NULL) {
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data->work_buffer = (lzo_voidp)malloc(data->work_buffer_size);
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if (data->work_buffer == NULL) {
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archive_set_error(f->archive, ENOMEM,
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"Can't allocate data for compression buffer");
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return (ARCHIVE_FATAL);
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}
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}
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if (data->compressed == NULL) {
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data->compressed_buffer_size = sizeof(header) +
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BLOCK_SIZE + (BLOCK_SIZE >> 4) + 64 + 3;
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data->compressed = (unsigned char *)
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malloc(data->compressed_buffer_size);
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if (data->compressed == NULL) {
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archive_set_error(f->archive, ENOMEM,
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"Can't allocate data for compression buffer");
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return (ARCHIVE_FATAL);
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}
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}
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if (data->uncompressed == NULL) {
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data->uncompressed_buffer_size = BLOCK_SIZE;
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data->uncompressed = (unsigned char *)
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malloc(data->uncompressed_buffer_size);
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if (data->uncompressed == NULL) {
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archive_set_error(f->archive, ENOMEM,
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"Can't allocate data for compression buffer");
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return (ARCHIVE_FATAL);
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}
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data->uncompressed_avail_bytes = BLOCK_SIZE;
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}
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return (ARCHIVE_OK);
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}
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static int
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make_header(struct archive_write_filter *f)
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{
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struct write_lzop *data = (struct write_lzop *)f->data;
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int64_t t;
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uint32_t checksum;
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memcpy(data->compressed, header, sizeof(header));
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/* Overwrite library version. */
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data->compressed[HEADER_LIBVERSION] = (unsigned char )
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(lzo_version() >> 8) & 0xff;
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data->compressed[HEADER_LIBVERSION + 1] = (unsigned char )
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lzo_version() & 0xff;
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/* Overwrite method and level. */
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data->compressed[HEADER_METHOD] = (unsigned char)data->method;
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data->compressed[HEADER_LEVEL] = data->level;
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/* Overwrite mtime with current time. */
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t = (int64_t)time(NULL);
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archive_be32enc(&data->compressed[HEADER_MTIME_LOW],
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(uint32_t)(t & 0xffffffff));
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archive_be32enc(&data->compressed[HEADER_MTIME_HIGH],
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(uint32_t)((t >> 32) & 0xffffffff));
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/* Overwrite header checksum with calculated value. */
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checksum = lzo_adler32(1, data->compressed + HEADER_VERSION,
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(lzo_uint)(HEADER_H_CHECKSUM - HEADER_VERSION));
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archive_be32enc(&data->compressed[HEADER_H_CHECKSUM], checksum);
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return (sizeof(header));
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}
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static int
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drive_compressor(struct archive_write_filter *f)
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{
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struct write_lzop *data = (struct write_lzop *)f->data;
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unsigned char *p;
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const int block_info_bytes = 12;
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int header_bytes, r;
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lzo_uint usize, csize;
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uint32_t checksum;
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if (!data->header_written) {
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header_bytes = make_header(f);
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data->header_written = 1;
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} else
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header_bytes = 0;
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p = data->compressed;
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usize = (lzo_uint)
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(data->uncompressed_buffer_size - data->uncompressed_avail_bytes);
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csize = 0;
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switch (data->method) {
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default:
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case METHOD_LZO1X_1:
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r = lzo1x_1_compress(data->uncompressed, usize,
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p + header_bytes + block_info_bytes, &csize,
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data->work_buffer);
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break;
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case METHOD_LZO1X_1_15:
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|
r = lzo1x_1_15_compress(data->uncompressed, usize,
|
|
|
|
p + header_bytes + block_info_bytes, &csize,
|
|
|
|
data->work_buffer);
|
|
|
|
break;
|
|
|
|
case METHOD_LZO1X_999:
|
|
|
|
r = lzo1x_999_compress_level(data->uncompressed, usize,
|
|
|
|
p + header_bytes + block_info_bytes, &csize,
|
|
|
|
data->work_buffer, NULL, 0, 0, data->level);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (r != LZO_E_OK) {
|
|
|
|
archive_set_error(f->archive, ARCHIVE_ERRNO_MISC,
|
|
|
|
"Lzop compression failed: returned status %d", r);
|
|
|
|
return (ARCHIVE_FATAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Store uncompressed size. */
|
|
|
|
archive_be32enc(p + header_bytes, (uint32_t)usize);
|
|
|
|
/* Store the checksum of the uncompressed data. */
|
|
|
|
checksum = lzo_adler32(1, data->uncompressed, usize);
|
|
|
|
archive_be32enc(p + header_bytes + 8, checksum);
|
|
|
|
|
|
|
|
if (csize < usize) {
|
|
|
|
/* Store compressed size. */
|
|
|
|
archive_be32enc(p + header_bytes + 4, (uint32_t)csize);
|
|
|
|
r = __archive_write_filter(f->next_filter, data->compressed,
|
|
|
|
header_bytes + block_info_bytes + csize);
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* This case, we output uncompressed data instead.
|
|
|
|
*/
|
|
|
|
/* Store uncompressed size as compressed size. */
|
|
|
|
archive_be32enc(p + header_bytes + 4, (uint32_t)usize);
|
|
|
|
r = __archive_write_filter(f->next_filter, data->compressed,
|
|
|
|
header_bytes + block_info_bytes);
|
|
|
|
if (r != ARCHIVE_OK)
|
|
|
|
return (ARCHIVE_FATAL);
|
|
|
|
r = __archive_write_filter(f->next_filter, data->uncompressed,
|
|
|
|
usize);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (r != ARCHIVE_OK)
|
|
|
|
return (ARCHIVE_FATAL);
|
|
|
|
return (ARCHIVE_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
archive_write_lzop_write(struct archive_write_filter *f,
|
|
|
|
const void *buff, size_t length)
|
|
|
|
{
|
|
|
|
struct write_lzop *data = (struct write_lzop *)f->data;
|
|
|
|
const char *p = buff;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
do {
|
|
|
|
if (data->uncompressed_avail_bytes > length) {
|
|
|
|
memcpy(data->uncompressed
|
|
|
|
+ data->uncompressed_buffer_size
|
|
|
|
- data->uncompressed_avail_bytes,
|
|
|
|
p, length);
|
|
|
|
data->uncompressed_avail_bytes -= length;
|
|
|
|
return (ARCHIVE_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
memcpy(data->uncompressed + data->uncompressed_buffer_size
|
|
|
|
- data->uncompressed_avail_bytes,
|
|
|
|
p, data->uncompressed_avail_bytes);
|
|
|
|
length -= data->uncompressed_avail_bytes;
|
|
|
|
p += data->uncompressed_avail_bytes;
|
|
|
|
data->uncompressed_avail_bytes = 0;
|
|
|
|
|
|
|
|
r = drive_compressor(f);
|
|
|
|
if (r != ARCHIVE_OK) return (r);
|
|
|
|
data->uncompressed_avail_bytes = BLOCK_SIZE;
|
|
|
|
} while (length);
|
|
|
|
|
|
|
|
return (ARCHIVE_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
archive_write_lzop_close(struct archive_write_filter *f)
|
|
|
|
{
|
|
|
|
struct write_lzop *data = (struct write_lzop *)f->data;
|
|
|
|
const uint32_t endmark = 0;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
if (data->uncompressed_avail_bytes < BLOCK_SIZE) {
|
|
|
|
/* Compress and output remaining data. */
|
|
|
|
r = drive_compressor(f);
|
|
|
|
if (r != ARCHIVE_OK)
|
|
|
|
return (r);
|
|
|
|
}
|
|
|
|
/* Write a zero uncompressed size as the end mark of the series of
|
|
|
|
* compressed block. */
|
|
|
|
r = __archive_write_filter(f->next_filter, &endmark, sizeof(endmark));
|
|
|
|
if (r != ARCHIVE_OK)
|
|
|
|
return (r);
|
|
|
|
return (__archive_write_close_filter(f->next_filter));
|
|
|
|
}
|
|
|
|
|
|
|
|
#else
|
|
|
|
static int
|
|
|
|
archive_write_lzop_open(struct archive_write_filter *f)
|
|
|
|
{
|
|
|
|
struct write_lzop *data = (struct write_lzop *)f->data;
|
|
|
|
struct archive_string as;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
archive_string_init(&as);
|
|
|
|
archive_strcpy(&as, "lzop");
|
|
|
|
/* Specify compression level. */
|
|
|
|
if (data->compression_level > 0) {
|
|
|
|
archive_strappend_char(&as, ' ');
|
|
|
|
archive_strappend_char(&as, '-');
|
|
|
|
archive_strappend_char(&as, '0' + data->compression_level);
|
|
|
|
}
|
|
|
|
|
|
|
|
r = __archive_write_program_open(f, data->pdata, as.s);
|
|
|
|
archive_string_free(&as);
|
|
|
|
return (r);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
archive_write_lzop_write(struct archive_write_filter *f,
|
|
|
|
const void *buff, size_t length)
|
|
|
|
{
|
|
|
|
struct write_lzop *data = (struct write_lzop *)f->data;
|
|
|
|
|
|
|
|
return __archive_write_program_write(f, data->pdata, buff, length);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
archive_write_lzop_close(struct archive_write_filter *f)
|
|
|
|
{
|
|
|
|
struct write_lzop *data = (struct write_lzop *)f->data;
|
|
|
|
|
|
|
|
return __archive_write_program_close(f, data->pdata);
|
|
|
|
}
|
|
|
|
#endif
|