Add DriveApiUrlGenerator.

chrome/browser/google_apis/drive_api_url_generator.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 "chrome/browser/google_apis/drive_api_url_generator.h"
+
+#include "base/string_number_conversions.h"
+#include "base/stringprintf.h"
+#include "chrome/common/net/url_util.h"
+
+namespace google_apis {
+
+namespace {
+
+// Hard coded URLs for communication with a google drive server.
+const char kDriveV2AboutUrl[] = "https://www.googleapis.com/drive/v2/about";
+const char kDriveV2ApplistUrl[] = "https://www.googleapis.com/drive/v2/apps";
+const char kDriveV2ChangelistUrl[] =
+    "https://www.googleapis.com/drive/v2/changes";
+
+const char kDriveV2FilelistUrl[] = "https://www.googleapis.com/drive/v2/files";
+const char kDriveV2FileUrlFormat[] =
+    "https://www.googleapis.com/drive/v2/files/%s";
+
+}  // namespace
+
+DriveApiUrlGenerator::DriveApiUrlGenerator() {
+  // Do nothing.
+}
+
+DriveApiUrlGenerator::~DriveApiUrlGenerator() {
+  // Do nothing.
+}
+
+GURL DriveApiUrlGenerator::GetAboutUrl() const {
+  return GURL(kDriveV2AboutUrl);
+}
+
+GURL DriveApiUrlGenerator::GetApplistUrl() const {
+  return GURL(kDriveV2ApplistUrl);
+}
+
+GURL DriveApiUrlGenerator::GetChangelistUrl(
+    const GURL& override_url, int64 start_changestamp) const {
+  // Use override_url if not empty,
+  // otherwise use the default url (kDriveV2Changelisturl).
+  const GURL& url =
+      override_url.is_empty() ? GURL(kDriveV2ChangelistUrl) : override_url;
+  return start_changestamp ?
+      chrome_common_net::AppendOrReplaceQueryParameter(
+          url, "startChangeId", base::Int64ToString(start_changestamp)) :
+      url;
+}
+
+GURL DriveApiUrlGenerator::GetFilelistUrl(
+    const GURL& override_url, const std::string& search_string) const {
+  // Use override_url if not empty,
+  // otherwise use the default url (kDriveV2FilelistUrl).
+  const GURL& url =
+      override_url.is_empty() ? GURL(kDriveV2FilelistUrl) : override_url;
+
+  return search_string.empty() ?
+      url :
+      chrome_common_net::AppendOrReplaceQueryParameter(
+          url, "q", search_string);
+}
+
+GURL DriveApiUrlGenerator::GetFileUrl(const std::string& file_id) const {
+  return GURL(base::StringPrintf(kDriveV2FileUrlFormat, file_id.c_str()));
+}
+
+}  // namespace google_apis