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| 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 #include "base/json/json_value_serializer.h" | |
| 6 | |
| 7 #include "base/file_util.h" | |
| 8 #include "base/json/json_reader.h" | |
| 9 #include "base/json/json_writer.h" | |
| 10 #include "base/string_util.h" | |
| 11 | |
| 12 const char* JSONFileValueSerializer::kAccessDenied = "Access denied."; | |
| 13 const char* JSONFileValueSerializer::kCannotReadFile = "Can't read file."; | |
| 14 const char* JSONFileValueSerializer::kFileLocked = "File locked."; | |
| 15 const char* JSONFileValueSerializer::kNoSuchFile = "File doesn't exist."; | |
| 16 | |
| 17 JSONStringValueSerializer::~JSONStringValueSerializer() {} | |
| 18 | |
| 19 bool JSONStringValueSerializer::Serialize(const Value& root) { | |
| 20 return SerializeInternal(root, false); | |
| 21 } | |
| 22 | |
| 23 bool JSONStringValueSerializer::SerializeAndOmitBinaryValues( | |
| 24 const Value& root) { | |
| 25 return SerializeInternal(root, true); | |
| 26 } | |
| 27 | |
| 28 bool JSONStringValueSerializer::SerializeInternal(const Value& root, | |
| 29 bool omit_binary_values) { | |
| 30 if (!json_string_ || initialized_with_const_string_) | |
| 31 return false; | |
| 32 | |
| 33 base::JSONWriter::WriteWithOptions( | |
| 34 &root, | |
| 35 pretty_print_, | |
| 36 omit_binary_values ? base::JSONWriter::OPTIONS_OMIT_BINARY_VALUES : 0, | |
| 37 json_string_); | |
| 38 return true; | |
| 39 } | |
| 40 | |
| 41 Value* JSONStringValueSerializer::Deserialize(int* error_code, | |
| 42 std::string* error_str) { | |
| 43 if (!json_string_) | |
| 44 return NULL; | |
| 45 | |
| 46 return base::JSONReader::ReadAndReturnError(*json_string_, | |
| 47 allow_trailing_comma_, | |
| 48 error_code, | |
| 49 error_str); | |
| 50 } | |
| 51 | |
| 52 /******* File Serializer *******/ | |
| 53 | |
| 54 bool JSONFileValueSerializer::Serialize(const Value& root) { | |
| 55 return SerializeInternal(root, false); | |
| 56 } | |
| 57 | |
| 58 bool JSONFileValueSerializer::SerializeAndOmitBinaryValues(const Value& root) { | |
| 59 return SerializeInternal(root, true); | |
| 60 } | |
| 61 | |
| 62 bool JSONFileValueSerializer::SerializeInternal(const Value& root, | |
| 63 bool omit_binary_values) { | |
| 64 std::string json_string; | |
| 65 JSONStringValueSerializer serializer(&json_string); | |
| 66 serializer.set_pretty_print(true); | |
| 67 bool result = omit_binary_values ? | |
| 68 serializer.SerializeAndOmitBinaryValues(root) : | |
| 69 serializer.Serialize(root); | |
| 70 if (!result) | |
| 71 return false; | |
| 72 | |
| 73 int data_size = static_cast<int>(json_string.size()); | |
| 74 if (file_util::WriteFile(json_file_path_, | |
| 75 json_string.data(), | |
| 76 data_size) != data_size) | |
| 77 return false; | |
| 78 | |
| 79 return true; | |
| 80 } | |
| 81 | |
| 82 int JSONFileValueSerializer::ReadFileToString(std::string* json_string) { | |
| 83 DCHECK(json_string); | |
| 84 if (!file_util::ReadFileToString(json_file_path_, json_string)) { | |
| 85 #if defined(OS_WIN) | |
| 86 int error = ::GetLastError(); | |
| 87 if (error == ERROR_SHARING_VIOLATION || error == ERROR_LOCK_VIOLATION) { | |
| 88 return JSON_FILE_LOCKED; | |
| 89 } else if (error == ERROR_ACCESS_DENIED) { | |
| 90 return JSON_ACCESS_DENIED; | |
| 91 } | |
| 92 #endif | |
| 93 if (!file_util::PathExists(json_file_path_)) | |
| 94 return JSON_NO_SUCH_FILE; | |
| 95 else | |
| 96 return JSON_CANNOT_READ_FILE; | |
| 97 } | |
| 98 return JSON_NO_ERROR; | |
| 99 } | |
| 100 | |
| 101 const char* JSONFileValueSerializer::GetErrorMessageForCode(int error_code) { | |
| 102 switch (error_code) { | |
| 103 case JSON_NO_ERROR: | |
| 104 return ""; | |
| 105 case JSON_ACCESS_DENIED: | |
| 106 return kAccessDenied; | |
| 107 case JSON_CANNOT_READ_FILE: | |
| 108 return kCannotReadFile; | |
| 109 case JSON_FILE_LOCKED: | |
| 110 return kFileLocked; | |
| 111 case JSON_NO_SUCH_FILE: | |
| 112 return kNoSuchFile; | |
| 113 default: | |
| 114 NOTREACHED(); | |
| 115 return ""; | |
| 116 } | |
| 117 } | |
| 118 | |
| 119 Value* JSONFileValueSerializer::Deserialize(int* error_code, | |
| 120 std::string* error_str) { | |
| 121 std::string json_string; | |
| 122 int error = ReadFileToString(&json_string); | |
| 123 if (error != JSON_NO_ERROR) { | |
| 124 if (error_code) | |
| 125 *error_code = error; | |
| 126 if (error_str) | |
| 127 *error_str = GetErrorMessageForCode(error); | |
| 128 return NULL; | |
| 129 } | |
| 130 | |
| 131 JSONStringValueSerializer serializer(json_string); | |
| 132 serializer.set_allow_trailing_comma(allow_trailing_comma_); | |
| 133 return serializer.Deserialize(error_code, error_str); | |
| 134 } | |
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Chromium Code Reviews
Issue 9465030:
Break two classes defined in json_value_serializer.cc, .h into separate files. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/