1 files changed, 91 insertions, 0 deletions

diff --git a/busybox/archival/bunzip2.c b/busybox/archival/bunzip2.c
new file mode 100644
index 000000000..bedd38c22
--- /dev/null
+++ b/busybox/archival/bunzip2.c
@@ -0,0 +1,91 @@
+/*
+ *  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.
+ */
+
+#include <fcntl.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "busybox.h"
+#include "unarchive.h"
+
+#define BUNZIP2_OPT_STDOUT      1
+#define BUNZIP2_OPT_FORCE       2
+
+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... */
+        char *save_name;
+        unsigned long opt;
+        int status;
+        int src_fd;
+        int 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')) {
+                /* Open input file */
+                src_fd = bb_xopen(compressed_name, O_RDONLY);
+        } else {
+                src_fd = STDIN_FILENO;
+                opt |= BUNZIP2_OPT_STDOUT;
+        }
+
+        /* 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) {
+                        bb_error_msg_and_die("Invalid extension");
+                }
+                save_name = bb_xstrndup(compressed_name, len);
+                dst_fd = bb_xopen(save_name, O_WRONLY | O_CREAT);
+        }
+
+        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);
+                }
+        }
+
+        return status;
+}