Add FileUtileHelper

webkit/fileapi/file_util_helper.cc

Index: webkit/fileapi/file_util_helper.cc
diff --git a/webkit/fileapi/file_util_helper.cc b/webkit/fileapi/file_util_helper.cc
new file mode 100644
index 0000000000000000000000000000000000000000..46163ea6559788049120e563d37fb60703adee1c
--- /dev/null
+++ b/webkit/fileapi/file_util_helper.cc
@@ -0,0 +1,62 @@
+// 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 "webkit/fileapi/file_util_helper.h"
+
+#include "webkit/fileapi/file_system_file_util.h"
+#include "webkit/fileapi/file_system_operation_context.h"
+#include "webkit/fileapi/file_system_path.h"
+
+using base::PlatformFileError;
+
+namespace fileapi {
+
+base::PlatformFileError FileUtilHelper::Delete(
+    FileSystemOperationContext* context,
+    FileSystemFileUtil* file_util,
+    const FileSystemPath& path,
+    bool recursive) {
+  if (file_util->DirectoryExists(context, path)) {
+    if (!recursive)
+      return file_util->DeleteSingleDirectory(context, path);
+    else
+      return DeleteDirectoryRecursive(context, file_util, path);
+  } else {
+    return file_util->DeleteFile(context, path);
+  }
+}
+
+base::PlatformFileError FileUtilHelper::DeleteDirectoryRecursive(
+    FileSystemOperationContext* context,
+    FileSystemFileUtil* file_util,
+    const FileSystemPath& path) {
+
+  scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator> file_enum(
+      file_util->CreateFileEnumerator(context, path));
+  FilePath file_path_each;
+  std::stack<FilePath> directories;
+  while (!(file_path_each = file_enum->Next()).empty()) {
+    if (file_enum->IsDirectory()) {
+      directories.push(file_path_each);
+    } else {
+      PlatformFileError error = file_util->DeleteFile(
+          context, path.WithInternalPath(file_path_each));
+      if (error != base::PLATFORM_FILE_ERROR_NOT_FOUND &&
+          error != base::PLATFORM_FILE_OK)
+        return error;
+    }
+  }
+
+  while (!directories.empty()) {
+    PlatformFileError error = file_util->DeleteSingleDirectory(
+        context, path.WithInternalPath(directories.top()));
+    if (error != base::PLATFORM_FILE_ERROR_NOT_FOUND &&
+        error != base::PLATFORM_FILE_OK)
+      return error;
+    directories.pop();
+  }
+  return file_util->DeleteSingleDirectory(context, path);
+}
+
+}  // namespace fileapi