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90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/*
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* Modified for busybox by Glenn McGrath <bug1@optushome.com.au>
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* Added support output to stdout by Thomas Lundquist <thomasez@zelow.no>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <fcntl.h>
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#include <getopt.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "busybox.h"
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#include "unarchive.h"
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#define BUNZIP2_OPT_STDOUT 1
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#define BUNZIP2_OPT_FORCE 2
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int bunzip2_main(int argc, char **argv)
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{
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char *compressed_name;
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char *save_name;
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unsigned long opt;
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int status;
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int src_fd;
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int dst_fd;
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opt = bb_getopt_ulflags(argc, argv, "cf");
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/* if called as bzcat force the stdout flag */
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if (bb_applet_name[2] == 'c') {
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opt |= BUNZIP2_OPT_STDOUT;
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}
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/* Set input filename and number */
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compressed_name = argv[optind];
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if ((compressed_name) && (compressed_name[0] != '-') && (compressed_name[1] != '\0')) {
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/* Open input file */
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src_fd = bb_xopen(compressed_name, O_RDONLY);
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} else {
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src_fd = STDIN_FILENO;
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opt |= BUNZIP2_OPT_STDOUT;
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}
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/* Check that the input is sane. */
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if (isatty(src_fd) && (opt & BUNZIP2_OPT_FORCE) == 0) {
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bb_error_msg_and_die("compressed data not read from terminal. Use -f to force it.");
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}
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if (opt & BUNZIP2_OPT_STDOUT) {
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dst_fd = STDOUT_FILENO;
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} else {
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int len = strlen(compressed_name) - 4;
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if (strcmp(compressed_name + len, ".bz2") != 0) {
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bb_error_msg_and_die("Invalid extension");
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}
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save_name = bb_xstrndup(compressed_name, len);
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dst_fd = bb_xopen(save_name, O_WRONLY | O_CREAT);
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}
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status = uncompressStream(src_fd, dst_fd);
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if(!(opt & BUNZIP2_OPT_STDOUT)) {
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char *delete_name;
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if (status) {
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delete_name = save_name;
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} else {
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delete_name = compressed_name;
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}
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if (unlink(delete_name) < 0) {
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bb_error_msg_and_die("Couldn't remove %s", delete_name);
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}
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}
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return status;
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}
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