1 files changed, 33 insertions, 0 deletions
diff --git a/lib/common/compress.c b/lib/common/compress.c
new file mode 100644
index 0000000..04e1f40
--- /dev/null
+++ b/lib/common/compress.c
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * compress.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "common.h"
+
+E_SQFS_COMPRESSOR compressor_get_default(void)
+{
+	if (sqfs_compressor_exists(SQFS_COMP_XZ))
+		return SQFS_COMP_XZ;
+
+	if (sqfs_compressor_exists(SQFS_COMP_ZSTD))
+		return SQFS_COMP_ZSTD;
+
+	return SQFS_COMP_GZIP;
+}
+
+void compressor_print_available(void)
+{
+	int i;
+
+	fputs("Available compressors:\n", stdout);
+
+	for (i = SQFS_COMP_MIN; i <= SQFS_COMP_MAX; ++i) {
+		if (sqfs_compressor_exists(i))
+			printf("\t%s\n", sqfs_compressor_name_from_id(i));
+	}
+
+	printf("\nDefault compressor: %s\n",
+	       sqfs_compressor_name_from_id(compressor_get_default()));
+}