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/*
* Small lzma deflate implementation.
* Copyright (C) 2006 Aurelien Jacobs <aurel@gnuage.org>
*
* Based on bunzip.c from busybox
*
* Licensed under GPL v2, see file LICENSE in this tarball for details.
*/
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "busybox.h"
#include "unarchive.h"
#define UNLZMA_OPT_STDOUT 1
int unlzma_main(int argc, char **argv)
{
char *filename;
unsigned long opt;
int status, src_fd, dst_fd;
opt = bb_getopt_ulflags(argc, argv, "c");
/* Set input filename and number */
filename = argv[optind];
if ((filename) && (filename[0] != '-') && (filename[1] != '\0')) {
/* Open input file */
src_fd = bb_xopen(filename, O_RDONLY);
} else {
src_fd = STDIN_FILENO;
filename = 0;
}
/* if called as lzmacat force the stdout flag */
if ((opt & UNLZMA_OPT_STDOUT) || bb_applet_name[4] == 'c')
filename = 0;
if (filename) {
char *extension = filename + strlen(filename) - 5;
if (strcmp(extension, ".lzma") != 0) {
bb_error_msg_and_die("Invalid extension");
}
*extension = 0;
dst_fd = bb_xopen(filename, O_WRONLY | O_CREAT);
} else
dst_fd = STDOUT_FILENO;
status = unlzma(src_fd, dst_fd);
if (filename) {
if (!status)
filename[strlen(filename)] = '.';
if (unlink(filename) < 0) {
bb_error_msg_and_die("Couldn't remove %s", filename);
}
}
return status;
}
/* vi:set ts=4: */
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