base/json/json_string_value_serializer.cc

   1 // Copyright (c) 2012 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 "base/json/json_string_value_serializer.h"
   6
   7 #include "base/json/json_reader.h"
   8 #include "base/json/json_writer.h"
   9 #include "base/logging.h"
  10
  11 using base::Value;
  12
  13 JSONStringValueSerializer::JSONStringValueSerializer(std::string* json_string)
  14     : json_string_(json_string),
  15       json_string_readonly_(*json_string),
  16       pretty_print_(false),
  17       allow_trailing_comma_(false) {
  18 }
  19
  20 JSONStringValueSerializer::JSONStringValueSerializer(
  21     const base::StringPiece& json_string)
  22     : json_string_(nullptr),
  23       json_string_readonly_(json_string),
  24       pretty_print_(false),
  25       allow_trailing_comma_(false) {
  26 }
  27
  28 JSONStringValueSerializer::~JSONStringValueSerializer() {}
  29
  30 bool JSONStringValueSerializer::Serialize(const Value& root) {
  31   return SerializeInternal(root, false);
  32 }
  33
  34 bool JSONStringValueSerializer::SerializeAndOmitBinaryValues(
  35     const Value& root) {
  36   return SerializeInternal(root, true);
  37 }
  38
  39 bool JSONStringValueSerializer::SerializeInternal(const Value& root,
  40                                                   bool omit_binary_values) {
  41   if (!json_string_)
  42     return false;
  43
  44   int options = 0;
  45   if (omit_binary_values)
  46     options |= base::JSONWriter::OPTIONS_OMIT_BINARY_VALUES;
  47   if (pretty_print_)
  48     options |= base::JSONWriter::OPTIONS_PRETTY_PRINT;
  49
  50   return base::JSONWriter::WriteWithOptions(&root, options, json_string_);
  51 }
  52
  53 Value* JSONStringValueSerializer::Deserialize(int* error_code,
  54                                               std::string* error_str) {
  55   return base::JSONReader::ReadAndReturnError(json_string_readonly_,
  56       allow_trailing_comma_ ? base::JSON_ALLOW_TRAILING_COMMAS :
  57           base::JSON_PARSE_RFC,
  58       error_code, error_str);
  59 }