1 // Copyright (c) 2011 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 // This class is called by the WebResourceService in a sandboxed process 6 // to unpack data retrieved from a web resource feed. Right now, it 7 // takes a string of data in JSON format, parses it, and hands it back 8 // to the WebResourceService as a list of items. In the future 9 // it will be set up to unpack and verify image data in addition to 10 // just parsing a JSON feed. 11 12 #ifndef CHROME_COMMON_WEB_RESOURCE_WEB_RESOURCE_UNPACKER_H_ 13 #define CHROME_COMMON_WEB_RESOURCE_WEB_RESOURCE_UNPACKER_H_ 14 #pragma once 15 16 #include <string> 17 18 #include "base/basictypes.h" 19 #include "base/memory/scoped_ptr.h" 20 21 class DictionaryValue; 22 23 class WebResourceUnpacker { 24 public: 25 static const char* kInvalidDataTypeError; 26 static const char* kUnexpectedJSONFormatError; 27 28 explicit WebResourceUnpacker(const std::string &resource_data); 29 ~WebResourceUnpacker(); 30 31 // This does the actual parsing. In case of an error, error_message_ 32 // is set to an appropriate value. 33 bool Run(); 34 35 // Returns the last error message set by Run(). 36 const std::string& error_message() { return error_message_; } 37 38 // Gets data which has been parsed by Run(). 39 DictionaryValue* parsed_json() { 40 return parsed_json_.get(); 41 } 42 43 private: 44 // Holds the string which is to be parsed. 45 std::string resource_data_; 46 47 // Holds the result of JSON parsing of resource_data_. 48 scoped_ptr<DictionaryValue> parsed_json_; 49 50 // Holds the last error message produced by Run(). 51 std::string error_message_; 52 53 DISALLOW_COPY_AND_ASSIGN(WebResourceUnpacker); 54 }; 55 56 #endif // CHROME_COMMON_WEB_RESOURCE_WEB_RESOURCE_UNPACKER_H_ 57
