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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_JSON_JSON_FILE_VALUE_SERIALIZER_H_ | 5 #ifndef BASE_JSON_JSON_FILE_VALUE_SERIALIZER_H_ |
6 #define BASE_JSON_JSON_FILE_VALUE_SERIALIZER_H_ | 6 #define BASE_JSON_JSON_FILE_VALUE_SERIALIZER_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 | 9 |
10 #include <string> | 10 #include <string> |
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41 bool SerializeInternal(const base::Value& root, bool omit_binary_values); | 41 bool SerializeInternal(const base::Value& root, bool omit_binary_values); |
42 | 42 |
43 const base::FilePath json_file_path_; | 43 const base::FilePath json_file_path_; |
44 | 44 |
45 DISALLOW_IMPLICIT_CONSTRUCTORS(JSONFileValueSerializer); | 45 DISALLOW_IMPLICIT_CONSTRUCTORS(JSONFileValueSerializer); |
46 }; | 46 }; |
47 | 47 |
48 class BASE_EXPORT JSONFileValueDeserializer : public base::ValueDeserializer { | 48 class BASE_EXPORT JSONFileValueDeserializer : public base::ValueDeserializer { |
49 public: | 49 public: |
50 // |json_file_path_| is the path of a file that will be source of the | 50 // |json_file_path_| is the path of a file that will be source of the |
51 // deserialization. | 51 // deserialization. |options| is a bitmask of JSONParserOptions. |
52 explicit JSONFileValueDeserializer(const base::FilePath& json_file_path); | 52 explicit JSONFileValueDeserializer(const base::FilePath& json_file_path, |
| 53 int options = 0); |
53 | 54 |
54 ~JSONFileValueDeserializer() override; | 55 ~JSONFileValueDeserializer() override; |
55 | 56 |
56 // Attempt to deserialize the data structure encoded in the file passed | 57 // Attempt to deserialize the data structure encoded in the file passed |
57 // in to the constructor into a structure of Value objects. If the return | 58 // in to the constructor into a structure of Value objects. If the return |
58 // value is NULL, and if |error_code| is non-null, |error_code| will | 59 // value is NULL, and if |error_code| is non-null, |error_code| will |
59 // contain an integer error code (either JsonFileError or JsonParseError). | 60 // contain an integer error code (either JsonFileError or JsonParseError). |
60 // If |error_message| is non-null, it will be filled in with a formatted | 61 // If |error_message| is non-null, it will be filled in with a formatted |
61 // error message including the location of the error if appropriate. | 62 // error message including the location of the error if appropriate. |
62 // The caller takes ownership of the returned value. | 63 // The caller takes ownership of the returned value. |
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75 // File-specific error messages that can be returned. | 76 // File-specific error messages that can be returned. |
76 static const char kAccessDenied[]; | 77 static const char kAccessDenied[]; |
77 static const char kCannotReadFile[]; | 78 static const char kCannotReadFile[]; |
78 static const char kFileLocked[]; | 79 static const char kFileLocked[]; |
79 static const char kNoSuchFile[]; | 80 static const char kNoSuchFile[]; |
80 | 81 |
81 // Convert an error code into an error message. |error_code| is assumed to | 82 // Convert an error code into an error message. |error_code| is assumed to |
82 // be a JsonFileError. | 83 // be a JsonFileError. |
83 static const char* GetErrorMessageForCode(int error_code); | 84 static const char* GetErrorMessageForCode(int error_code); |
84 | 85 |
85 void set_allow_trailing_comma(bool new_value) { | |
86 allow_trailing_comma_ = new_value; | |
87 } | |
88 | |
89 // Returns the size (in bytes) of JSON string read from disk in the last | 86 // Returns the size (in bytes) of JSON string read from disk in the last |
90 // successful |Deserialize()| call. | 87 // successful |Deserialize()| call. |
91 size_t get_last_read_size() const { return last_read_size_; } | 88 size_t get_last_read_size() const { return last_read_size_; } |
92 | 89 |
93 private: | 90 private: |
94 // A wrapper for ReadFileToString which returns a non-zero JsonFileError if | 91 // A wrapper for ReadFileToString which returns a non-zero JsonFileError if |
95 // there were file errors. | 92 // there were file errors. |
96 int ReadFileToString(std::string* json_string); | 93 int ReadFileToString(std::string* json_string); |
97 | 94 |
98 const base::FilePath json_file_path_; | 95 const base::FilePath json_file_path_; |
99 bool allow_trailing_comma_; | 96 const int options_; |
100 size_t last_read_size_; | 97 size_t last_read_size_; |
101 | 98 |
102 DISALLOW_IMPLICIT_CONSTRUCTORS(JSONFileValueDeserializer); | 99 DISALLOW_IMPLICIT_CONSTRUCTORS(JSONFileValueDeserializer); |
103 }; | 100 }; |
104 | 101 |
105 #endif // BASE_JSON_JSON_FILE_VALUE_SERIALIZER_H_ | 102 #endif // BASE_JSON_JSON_FILE_VALUE_SERIALIZER_H_ |
106 | 103 |
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