1 files changed, 91 insertions, 0 deletions
diff --git a/busybox/archival/bunzip2.c b/busybox/archival/bunzip2.c
new file mode 100644
index 0000000..bedd38c
--- /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;
+}