1 files changed, 65 insertions, 0 deletions

diff --git a/archival/unlzma.c b/archival/unlzma.c
new file mode 100644
index 000000000..dc85cb25e
--- /dev/null
+++ b/archival/unlzma.c
@@ -0,0 +1,65 @@
+/*
+ * 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: */