Add path filtering to DeviceMediaFileUtil

webkit/fileapi/media/filtering_file_enumerator.cc

Index: webkit/fileapi/media/filtering_file_enumerator.cc
diff --git a/webkit/fileapi/media/filtering_file_enumerator.cc b/webkit/fileapi/media/filtering_file_enumerator.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e1b9cc51e257fec9ecc2bdfccb9a31161449aa01
--- /dev/null
+++ b/webkit/fileapi/media/filtering_file_enumerator.cc
@@ -0,0 +1,44 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/logging.h"
+#include "webkit/fileapi/media/filtering_file_enumerator.h"
+
+namespace fileapi {
+
+FilteringFileEnumerator::FilteringFileEnumerator(
+    scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator> base_enumerator,
+    MediaPathFilter* filter)
+    : base_enumerator_(base_enumerator.Pass()),
+      filter_(filter) {
+  DCHECK(base_enumerator_.get());
+  DCHECK(filter);
+}
+
+FilteringFileEnumerator::~FilteringFileEnumerator() {
+}
+
+FilePath FilteringFileEnumerator::Next() {
+  while (true) {
+    FilePath next = base_enumerator_->Next();
+    if (next.empty() ||
+        base_enumerator_->IsDirectory() ||
+        filter_->Match(next))
+      return next;
+  }
+}
+
+int64 FilteringFileEnumerator::Size() {
+  return base_enumerator_->Size();
+}
+
+base::Time FilteringFileEnumerator::LastModifiedTime() {
+  return base_enumerator_->LastModifiedTime();
+}
+
+bool FilteringFileEnumerator::IsDirectory() {
+  return base_enumerator_->IsDirectory();
+}
+
+}  // namespace fileapi