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/common/web_resource/web_resource_unpacker.h"
6
7#include "base/json/json_reader.h"
8#include "base/values.h"
9
10const char* WebResourceUnpacker::kInvalidDataTypeError =
11    "Data from web resource server is missing or not valid JSON.";
12
13const char* WebResourceUnpacker::kUnexpectedJSONFormatError =
14    "Data from web resource server does not have expected format.";
15
16WebResourceUnpacker::WebResourceUnpacker(const std::string &resource_data)
17    : resource_data_(resource_data) {
18}
19
20WebResourceUnpacker::~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.
26bool WebResourceUnpacker::Run() {
27  scoped_ptr<Value> value;
28  if (!resource_data_.empty()) {
29    value.reset(base::JSONReader::Read(resource_data_, false));
30    if (!value.get()) {
31      // Page information not properly read, or corrupted.
32      error_message_ = kInvalidDataTypeError;
33      return false;
34    }
35    if (!value->IsType(Value::TYPE_DICTIONARY)) {
36      error_message_ = kUnexpectedJSONFormatError;
37      return false;
38    }
39    parsed_json_.reset(static_cast<DictionaryValue*>(value.release()));
40    return true;
41  }
42  error_message_ = kInvalidDataTypeError;
43  return false;
44}
45
46