1 files changed, 118 insertions, 0 deletions
diff --git a/difftool/fscompare.c b/difftool/fscompare.c
new file mode 100644
index 0000000..c925adc
--- /dev/null
+++ b/difftool/fscompare.c
@@ -0,0 +1,118 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * fscompare.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "difftool.h"
+
+static struct option long_opts[] = {
+	{ "no-owner", no_argument, NULL, 'O' },
+	{ "no-permissions", no_argument, NULL, 'P' },
+	{ "help", no_argument, NULL, 'h' },
+	{ "version", no_argument, NULL, 'V' },
+};
+
+static const char *short_opts = "OPhV";
+
+static const char *usagestr =
+"Usage: fscompare [OPTIONS...] <first> <second>\n"
+"\n"
+"Compare two directories, making sure that each contains the same entries.\n"
+"If an entry is a directory, comparison recurses into the directory.\n"
+"\n"
+"Possible options:\n"
+"\n"
+"  --no-owner, -O              Do not compare file owners.\n"
+"  --no-permissions, -P        Do not compare permission bits.\n"
+"\n"
+"  --help, -h                  Print help text and exit.\n"
+"  --version, -V               Print version information and exit.\n"
+"\n";
+
+const char *first_path;
+const char *second_path;
+int compare_flags = 0;
+
+static void process_options(int argc, char **argv)
+{
+	int i;
+
+	for (;;) {
+		i = getopt_long(argc, argv, short_opts, long_opts, NULL);
+		if (i == -1)
+			break;
+
+		switch (i) {
+		case 'O':
+			compare_flags |= COMPARE_NO_OWNER;
+			break;
+		case 'P':
+			compare_flags |= COMPARE_NO_PERM;
+			break;
+		case 'h':
+			fputs(usagestr, stdout);
+			exit(EXIT_SUCCESS);
+		case 'V':
+			print_version();
+			exit(EXIT_SUCCESS);
+		default:
+			goto fail_arg;
+		}
+	}
+
+	if (optind >= argc) {
+		fputs("Missing arguments: first directory\n", stderr);
+		goto fail_arg;
+	}
+
+	first_path = argv[optind++];
+
+	if (optind >= argc) {
+		fputs("Missing arguments: second directory\n", stderr);
+		goto fail_arg;
+	}
+
+	second_path = argv[optind++];
+
+	if (optind < argc) {
+		fputs("Unknown extra arguments\n", stderr);
+		goto fail_arg;
+	}
+	return;
+fail_arg:
+	fprintf(stderr, "Try `fscompare --help' for more information.\n");
+	exit(EXIT_FAILURE);
+}
+
+int main(int argc, char **argv)
+{
+	int ret = EXIT_FAILURE;
+	fstree_t afs, bfs;
+
+	process_options(argc, argv);
+
+	if (fstree_init(&afs, 512, NULL))
+		return EXIT_FAILURE;
+
+	if (fstree_init(&bfs, 512, NULL))
+		goto out_afs;
+
+	if (fstree_from_dir(&afs, first_path, false))
+		goto out_bfs;
+
+	if (fstree_from_dir(&bfs, second_path, false))
+		goto out_bfs;
+
+	tree_node_sort_recursive(afs.root);
+	tree_node_sort_recursive(bfs.root);
+
+	if (node_compare(afs.root, bfs.root) == 0)
+		ret = EXIT_SUCCESS;
+
+out_bfs:
+	fstree_cleanup(&bfs);
+out_afs:
+	fstree_cleanup(&afs);
+	return ret;
+}