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Side by Side Diff: base/json/json_value_serializer.h

Issue 8528051: Revert 110021 - Broke CrOS compile (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: Created 9 years, 1 month ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 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 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_VALUE_SERIALIZER_H_ 5 #ifndef BASE_JSON_JSON_VALUE_SERIALIZER_H_
6 #define BASE_JSON_JSON_VALUE_SERIALIZER_H_ 6 #define BASE_JSON_JSON_VALUE_SERIALIZER_H_
7 #pragma once 7 #pragma once
8 8
9 #include <string> 9 #include <string>
10 10
(...skipping 21 matching lines...) Expand all
32 initialized_with_const_string_(true), 32 initialized_with_const_string_(true),
33 pretty_print_(false), 33 pretty_print_(false),
34 allow_trailing_comma_(false) { 34 allow_trailing_comma_(false) {
35 } 35 }
36 36
37 virtual ~JSONStringValueSerializer(); 37 virtual ~JSONStringValueSerializer();
38 38
39 // Attempt to serialize the data structure represented by Value into 39 // Attempt to serialize the data structure represented by Value into
40 // JSON. If the return value is true, the result will have been written 40 // JSON. If the return value is true, the result will have been written
41 // into the string passed into the constructor. 41 // into the string passed into the constructor.
42 virtual bool Serialize(const Value& root) OVERRIDE; 42 virtual bool Serialize(const Value& root);
43
44 // Equivalent to Serialize(root) except binary values are omitted from the
45 // output.
46 bool SerializeAndOmitBinaryValues(const Value& root);
47 43
48 // Attempt to deserialize the data structure encoded in the string passed 44 // Attempt to deserialize the data structure encoded in the string passed
49 // in to the constructor into a structure of Value objects. If the return 45 // in to the constructor into a structure of Value objects. If the return
50 // value is NULL, and if |error_code| is non-null, |error_code| will 46 // value is NULL, and if |error_code| is non-null, |error_code| will
51 // contain an integer error code (either JsonFileError or JsonParseError). 47 // contain an integer error code (either JsonFileError or JsonParseError).
52 // If |error_message| is non-null, it will be filled in with a formatted 48 // If |error_message| is non-null, it will be filled in with a formatted
53 // error message including the location of the error if appropriate. 49 // error message including the location of the error if appropriate.
54 // The caller takes ownership of the returned value. 50 // The caller takes ownership of the returned value.
55 virtual Value* Deserialize(int* error_code, std::string* error_message) 51 virtual Value* Deserialize(int* error_code, std::string* error_message);
56 OVERRIDE;
57 52
58 void set_pretty_print(bool new_value) { pretty_print_ = new_value; } 53 void set_pretty_print(bool new_value) { pretty_print_ = new_value; }
59 bool pretty_print() { return pretty_print_; } 54 bool pretty_print() { return pretty_print_; }
60 55
61 void set_allow_trailing_comma(bool new_value) { 56 void set_allow_trailing_comma(bool new_value) {
62 allow_trailing_comma_ = new_value; 57 allow_trailing_comma_ = new_value;
63 } 58 }
64 59
65 private: 60 private:
66 bool SerializeInternal(const Value& root, bool omit_binary_values);
67
68 std::string* json_string_; 61 std::string* json_string_;
69 bool initialized_with_const_string_; 62 bool initialized_with_const_string_;
70 bool pretty_print_; // If true, serialization will span multiple lines. 63 bool pretty_print_; // If true, serialization will span multiple lines.
71 // If true, deserialization will allow trailing commas. 64 // If true, deserialization will allow trailing commas.
72 bool allow_trailing_comma_; 65 bool allow_trailing_comma_;
73 66
74 DISALLOW_COPY_AND_ASSIGN(JSONStringValueSerializer); 67 DISALLOW_COPY_AND_ASSIGN(JSONStringValueSerializer);
75 }; 68 };
76 69
77 class BASE_EXPORT JSONFileValueSerializer : public base::ValueSerializer { 70 class BASE_EXPORT JSONFileValueSerializer : public base::ValueSerializer {
78 public: 71 public:
79 // json_file_patch is the path of a file that will be source of the 72 // json_file_patch is the path of a file that will be source of the
80 // deserialization or the destination of the serialization. 73 // deserialization or the destination of the serialization.
81 // When deserializing, the file should exist, but when serializing, the 74 // When deserializing, the file should exist, but when serializing, the
82 // serializer will attempt to create the file at the specified location. 75 // serializer will attempt to create the file at the specified location.
83 explicit JSONFileValueSerializer(const FilePath& json_file_path) 76 explicit JSONFileValueSerializer(const FilePath& json_file_path)
84 : json_file_path_(json_file_path) {} 77 : json_file_path_(json_file_path) {}
85 78
86 virtual ~JSONFileValueSerializer() {} 79 virtual ~JSONFileValueSerializer() {}
87 80
88 // DO NOT USE except in unit tests to verify the file was written properly. 81 // DO NOT USE except in unit tests to verify the file was written properly.
89 // We should never serialize directly to a file since this will block the 82 // We should never serialize directly to a file since this will block the
90 // thread. Instead, serialize to a string and write to the file you want on 83 // thread. Instead, serialize to a string and write to the file you want on
91 // the file thread. 84 // the file thread.
92 // 85 //
93 // Attempt to serialize the data structure represented by Value into 86 // Attempt to serialize the data structure represented by Value into
94 // JSON. If the return value is true, the result will have been written 87 // JSON. If the return value is true, the result will have been written
95 // into the file whose name was passed into the constructor. 88 // into the file whose name was passed into the constructor.
96 virtual bool Serialize(const Value& root) OVERRIDE; 89 virtual bool Serialize(const Value& root);
97
98 // Equivalent to Serialize(root) except binary values are omitted from the
99 // output.
100 bool SerializeAndOmitBinaryValues(const Value& root);
101 90
102 // Attempt to deserialize the data structure encoded in the file passed 91 // Attempt to deserialize the data structure encoded in the file passed
103 // in to the constructor into a structure of Value objects. If the return 92 // in to the constructor into a structure of Value objects. If the return
104 // value is NULL, and if |error_code| is non-null, |error_code| will 93 // value is NULL, and if |error_code| is non-null, |error_code| will
105 // contain an integer error code (either JsonFileError or JsonParseError). 94 // contain an integer error code (either JsonFileError or JsonParseError).
106 // If |error_message| is non-null, it will be filled in with a formatted 95 // If |error_message| is non-null, it will be filled in with a formatted
107 // error message including the location of the error if appropriate. 96 // error message including the location of the error if appropriate.
108 // The caller takes ownership of the returned value. 97 // The caller takes ownership of the returned value.
109 virtual Value* Deserialize(int* error_code, std::string* error_message) 98 virtual Value* Deserialize(int* error_code, std::string* error_message);
110 OVERRIDE;
111 99
112 // This enum is designed to safely overlap with JSONReader::JsonParseError. 100 // This enum is designed to safely overlap with JSONReader::JsonParseError.
113 enum JsonFileError { 101 enum JsonFileError {
114 JSON_NO_ERROR = 0, 102 JSON_NO_ERROR = 0,
115 JSON_ACCESS_DENIED = 1000, 103 JSON_ACCESS_DENIED = 1000,
116 JSON_CANNOT_READ_FILE, 104 JSON_CANNOT_READ_FILE,
117 JSON_FILE_LOCKED, 105 JSON_FILE_LOCKED,
118 JSON_NO_SUCH_FILE 106 JSON_NO_SUCH_FILE
119 }; 107 };
120 108
121 // File-specific error messages that can be returned. 109 // File-specific error messages that can be returned.
122 static const char* kAccessDenied; 110 static const char* kAccessDenied;
123 static const char* kCannotReadFile; 111 static const char* kCannotReadFile;
124 static const char* kFileLocked; 112 static const char* kFileLocked;
125 static const char* kNoSuchFile; 113 static const char* kNoSuchFile;
126 114
127 // Convert an error code into an error message. |error_code| is assumed to 115 // Convert an error code into an error message. |error_code| is assumed to
128 // be a JsonFileError. 116 // be a JsonFileError.
129 static const char* GetErrorMessageForCode(int error_code); 117 static const char* GetErrorMessageForCode(int error_code);
130 118
131 private: 119 private:
132 bool SerializeInternal(const Value& root, bool omit_binary_values);
133
134 FilePath json_file_path_; 120 FilePath json_file_path_;
135 121
136 // A wrapper for file_util::ReadFileToString which returns a non-zero 122 // A wrapper for file_util::ReadFileToString which returns a non-zero
137 // JsonFileError if there were file errors. 123 // JsonFileError if there were file errors.
138 int ReadFileToString(std::string* json_string); 124 int ReadFileToString(std::string* json_string);
139 125
140 DISALLOW_IMPLICIT_CONSTRUCTORS(JSONFileValueSerializer); 126 DISALLOW_IMPLICIT_CONSTRUCTORS(JSONFileValueSerializer);
141 }; 127 };
142 128
143 #endif // BASE_JSON_JSON_VALUE_SERIALIZER_H_ 129 #endif // BASE_JSON_JSON_VALUE_SERIALIZER_H_
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