chrome/utility/web_resource_unpacker.cc

   1 // Copyright (c) 2009 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 "chrome/utility/web_resource_unpacker.h"
   6
   7 #include "base/json/json_reader.h"
   8 #include "base/values.h"
   9
  10 const char WebResourceUnpacker::kInvalidDataTypeError[] =
  11     "Data from web resource server is missing or not valid JSON.";
  12
  13 const char WebResourceUnpacker::kUnexpectedJSONFormatError[] =
  14     "Data from web resource server does not have expected format.";
  15
  16 WebResourceUnpacker::WebResourceUnpacker(const std::string &resource_data)
  17     : resource_data_(resource_data) {
  18 }
  19
  20 WebResourceUnpacker::~WebResourceUnpacker() {
  21 }
  22
  23 // TODO(mrc): Right now, this reads JSON data from the experimental popgadget
  24 // server.  Change so the format is based on a template, once we have
  25 // decided on final server format.
  26 bool WebResourceUnpacker::Run() {
  27   scoped_ptr<base::Value> value;
  28   if (!resource_data_.empty()) {
  29     value.reset(base::JSONReader::Read(resource_data_));
  30     if (!value.get()) {
  31       // Page information not properly read, or corrupted.
  32       error_message_ = kInvalidDataTypeError;
  33       return false;
  34     }
  35     if (!value->IsType(base::Value::TYPE_DICTIONARY)) {
  36       error_message_ = kUnexpectedJSONFormatError;
  37       return false;
  38     }
  39     parsed_json_.reset(static_cast<base::DictionaryValue*>(value.release()));
  40     return true;
  41   }
  42   error_message_ = kInvalidDataTypeError;
  43   return false;
  44 }
  45