diff options
Diffstat (limited to 'archival/bunzip2.c')
| -rw-r--r-- | archival/bunzip2.c | 70 |
1 files changed, 22 insertions, 48 deletions
diff --git a/archival/bunzip2.c b/archival/bunzip2.c index 5cd013c0c..740e26919 100644 --- a/archival/bunzip2.c +++ b/archival/bunzip2.c @@ -2,19 +2,7 @@ * Modified for busybox by Glenn McGrath <bug1@iinet.net.au> * Added support output to stdout by Thomas Lundquist <thomasez@zelow.no> * - * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * Licensed under GPL v2, see file LICENSE in this tarball for details. */ #include <fcntl.h> @@ -32,61 +20,47 @@ int bunzip2_main(int argc, char **argv) { - char *compressed_name; - /* Note: Ignore the warning about save_name being used uninitialized. - * That is not the case, but gcc has trouble working that out... */ -#warning The save_name warning is OK, ignore it - char *save_name; + char *filename; unsigned long opt; - int status; - int src_fd; - int dst_fd; + int status, src_fd, dst_fd; opt = bb_getopt_ulflags(argc, argv, "cf"); - /* if called as bzcat force the stdout flag */ - if (bb_applet_name[2] == 'c') { - opt |= BUNZIP2_OPT_STDOUT; - } - /* Set input filename and number */ - compressed_name = argv[optind]; - if ((compressed_name) && (compressed_name[0] != '-') && (compressed_name[1] != '\0')) { + filename = argv[optind]; + if ((filename) && (filename[0] != '-') && (filename[1] != '\0')) { /* Open input file */ - src_fd = bb_xopen(compressed_name, O_RDONLY); + src_fd = bb_xopen(filename, O_RDONLY); } else { src_fd = STDIN_FILENO; - opt |= BUNZIP2_OPT_STDOUT; + filename = 0; } + + /* if called as bzcat force the stdout flag */ + if ((opt & BUNZIP2_OPT_STDOUT) || bb_applet_name[2] == 'c') + filename = 0; /* Check that the input is sane. */ if (isatty(src_fd) && (opt & BUNZIP2_OPT_FORCE) == 0) { bb_error_msg_and_die("compressed data not read from terminal. Use -f to force it."); } - if (opt & BUNZIP2_OPT_STDOUT) { - dst_fd = STDOUT_FILENO; - } else { - int len = strlen(compressed_name) - 4; - if (strcmp(compressed_name + len, ".bz2") != 0) { + if (filename) { + char *extension=filename+strlen(filename)-4; + if (strcmp(extension, ".bz2") != 0) { bb_error_msg_and_die("Invalid extension"); } - save_name = bb_xstrndup(compressed_name, len); - dst_fd = bb_xopen(save_name, O_WRONLY | O_CREAT); - } - + *extension=0; + dst_fd = bb_xopen(filename, O_WRONLY | O_CREAT); + } else dst_fd = STDOUT_FILENO; status = uncompressStream(src_fd, dst_fd); - if(!(opt & BUNZIP2_OPT_STDOUT)) { - char *delete_name; - if (status) { - delete_name = save_name; - } else { - delete_name = compressed_name; - } - if (unlink(delete_name) < 0) { - bb_error_msg_and_die("Couldn't remove %s", delete_name); + 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: */ |