android_webview/native/aw_media_url_interceptor.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <string>
   6
   7 #include "android_webview/common/url_constants.h"
   8 #include "android_webview/native/aw_media_url_interceptor.h"
   9 #include "base/android/apk_assets.h"
  10 #include "base/strings/string_util.h"
  11 #include "content/public/common/url_constants.h"
  12
  13 namespace android_webview {
  14
  15 bool AwMediaUrlInterceptor::Intercept(const std::string& url,
  16                                       int* fd,
  17                                       int64* offset,
  18                                       int64* size) const{
  19   std::string asset_file_prefix(url::kFileScheme);
  20   asset_file_prefix.append(url::kStandardSchemeSeparator);
  21   asset_file_prefix.append(android_webview::kAndroidAssetPath);
  22
  23   if (base::StartsWithASCII(url, asset_file_prefix, true)) {
  24     std::string filename(url);
  25     base::ReplaceFirstSubstringAfterOffset(
  26         &filename, 0, asset_file_prefix, "assets/");
  27     base::MemoryMappedFile::Region region =
  28         base::MemoryMappedFile::Region::kWholeFile;
  29     *fd = base::android::OpenApkAsset(filename, &region);
  30     *offset = region.offset;
  31     *size = region.size;
  32     return *fd != -1;
  33   }
  34
  35   return false;
  36 }
  37
  38 }  // namespace android_webview