[EXPERIMENTAL, FOR BENCHMARKING ONLY] Zstandard compression support

[wimlib] / src / decompress.c

diff --git a/src/decompress.c b/src/decompress.c
index 4ebd940d0ac074ce7d8e52ca122b84b09c9ce159..7d8747a8b3506f76b2d5cdfc68ebe27abba4433d 100644 (file)
--- a/src/decompress.c
+++ b/src/decompress.c
@@ -8,20 +8,18 @@
 /*
  * Copyright (C) 2013, 2014 Eric Biggers
  *
- * This file is part of wimlib, a library for working with WIM files.
+ * This file is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option) any
+ * later version.
  *
- * wimlib 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 3 of the License, or (at your option)
- * any later version.
- *
- * wimlib 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
+ * This file 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 Lesser General Public License for more
  * details.
  *
- * You should have received a copy of the GNU General Public License
- * along with wimlib; if not, see http://www.gnu.org/licenses/.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this file; if not, see http://www.gnu.org/licenses/.
  */
 
 #ifdef HAVE_CONFIG_H
@@ -38,10 +36,13 @@ struct wimlib_decompressor {
        void *private;
 };
 
-static const struct decompressor_ops *decompressor_ops[] = {
+static const struct decompressor_ops * const decompressor_ops[] = {
        [WIMLIB_COMPRESSION_TYPE_XPRESS] = &xpress_decompressor_ops,
        [WIMLIB_COMPRESSION_TYPE_LZX]    = &lzx_decompressor_ops,
        [WIMLIB_COMPRESSION_TYPE_LZMS]   = &lzms_decompressor_ops,
+#ifdef WITH_ZSTD
+       [WIMLIB_COMPRESSION_TYPE_ZSTD]   = &zstd_decompressor_ops,
+#endif
 };
 
 static bool
@@ -59,15 +60,15 @@ wimlib_create_decompressor(enum wimlib_compression_type ctype,
 {
        struct wimlib_decompressor *dec;
 
+       if (!decompressor_ctype_valid(ctype))
+               return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
+
        if (dec_ret == NULL)
                return WIMLIB_ERR_INVALID_PARAM;
 
        if (max_block_size == 0)
                return WIMLIB_ERR_INVALID_PARAM;
 
-       if (!decompressor_ctype_valid(ctype))
-               return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
-
        dec = MALLOC(sizeof(*dec));
        if (dec == NULL)
                return WIMLIB_ERR_NOMEM;