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/files/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
);