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.
5 #include "base/json/json_file_value_serializer.h"
7 #include "base/file_util.h"
8 #include "base/json/json_string_value_serializer.h"
9 #include "base/logging.h"
13 const char* JSONFileValueSerializer::kAccessDenied = "Access denied.";
14 const char* JSONFileValueSerializer::kCannotReadFile = "Can't read file.";
15 const char* JSONFileValueSerializer::kFileLocked = "File locked.";
16 const char* JSONFileValueSerializer::kNoSuchFile = "File doesn't exist.";
18 bool JSONFileValueSerializer::Serialize(const base::Value& root) {
19 return SerializeInternal(root, false);
22 bool JSONFileValueSerializer::SerializeAndOmitBinaryValues(
23 const base::Value& root) {
24 return SerializeInternal(root, true);
27 bool JSONFileValueSerializer::SerializeInternal(const base::Value& root,
28 bool omit_binary_values) {
29 std::string json_string;
30 JSONStringValueSerializer serializer(&json_string);
31 serializer.set_pretty_print(true);
32 bool result = omit_binary_values ?
33 serializer.SerializeAndOmitBinaryValues(root) :
34 serializer.Serialize(root);
38 int data_size = static_cast<int>(json_string.size());
39 if (base::WriteFile(json_file_path_, json_string.data(), data_size) !=
46 int JSONFileValueSerializer::ReadFileToString(std::string* json_string) {
48 if (!base::ReadFileToString(json_file_path_, json_string)) {
50 int error = ::GetLastError();
51 if (error == ERROR_SHARING_VIOLATION || error == ERROR_LOCK_VIOLATION) {
52 return JSON_FILE_LOCKED;
53 } else if (error == ERROR_ACCESS_DENIED) {
54 return JSON_ACCESS_DENIED;
57 if (!base::PathExists(json_file_path_))
58 return JSON_NO_SUCH_FILE;
60 return JSON_CANNOT_READ_FILE;
65 const char* JSONFileValueSerializer::GetErrorMessageForCode(int error_code) {
69 case JSON_ACCESS_DENIED:
71 case JSON_CANNOT_READ_FILE:
72 return kCannotReadFile;
73 case JSON_FILE_LOCKED:
75 case JSON_NO_SUCH_FILE:
83 base::Value* JSONFileValueSerializer::Deserialize(int* error_code,
84 std::string* error_str) {
85 std::string json_string;
86 int error = ReadFileToString(&json_string);
87 if (error != JSON_NO_ERROR) {
91 *error_str = GetErrorMessageForCode(error);
95 JSONStringValueSerializer serializer(json_string);
96 serializer.set_allow_trailing_comma(allow_trailing_comma_);
97 return serializer.Deserialize(error_code, error_str);