--- /dev/null
+/**************************************************************************
+ *
+ * Copyright 2011 Jose Fonseca
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+#include "os.hpp"
+#include "trace_file.hpp"
+
+
+using namespace trace;
+
+
+File *
+File::createForRead(const char *filename)
+{
+ File *file;
+
+ if (File::isSnappyCompressed(filename)) {
+ file = File::createSnappy();
+ } else if (File::isZLibCompressed(filename)) {
+ file = File::createZLib();
+ } else {
+ os::log("error: could not determine %s compression type\n", filename);
+ return NULL;
+ }
+
+ if (!file) {
+ return NULL;
+ }
+
+ if (!file->open(filename, File::Read)) {
+ os::log("error: could not open %s for reading\n", filename);
+ delete file;
+ return NULL;
+ }
+
+ return file;
+}