Add FileUtileHelper

webkit/fileapi/file_util_delete_helper.cc

+// 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_delete_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 {
+
+FileUtilDeleteHelper::FileUtilDeleteHelper(
+    FileSystemOperationContext* context,
+    FileSystemFileUtil* file_util)
+    : context_(context),
+      file_util_(file_util) {
+}
+
+FileUtilDeleteHelper::~FileUtilDeleteHelper() {
+}
+
+base::PlatformFileError FileUtilDeleteHelper::DoWork(const FileSystemPath& path,
+                                                     bool recursive) {
+  if (file_util_->DirectoryExists(context_, path)) {
+    if (!recursive)
+      return file_util_->DeleteSingleDirectory(context_, path);
+    else
+      return DeleteDirectoryRecursive(path);
+  } else {
+    return file_util_->DeleteFile(context_, path);
+  }
+}
+
+PlatformFileError FileUtilDeleteHelper::DeleteDirectoryRecursive(
+    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)
+        return base::PLATFORM_FILE_ERROR_FAILED;

[kinuko, 2012/03/02 05:25:16]

It makes me wonder we should just let it go here...?  (Does any test require
this?)

[tzik, 2012/03/02 19:09:09]

Seems right. No test require it.

+      else if (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)
+      return base::PLATFORM_FILE_ERROR_FAILED;
+    else if (error != base::PLATFORM_FILE_OK)
+      return error;
+    directories.pop();
+  }
+  return file_util_->DeleteSingleDirectory(context_, path);
+}
+
+}  // namespace fileapi