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1 // Protocol Buffers - Google's data interchange format
2 // Copyright 2008 Google Inc.  All rights reserved.
3 // https://developers.google.com/protocol-buffers/
4 //
5 // Redistribution and use in source and binary forms, with or without
6 // modification, are permitted provided that the following conditions are
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8 //
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18 //
19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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30 
31 #ifndef NET_PROTO2_UTIL_CONVERTER_STRINGS_JSON_ESCAPING_H_
32 #define NET_PROTO2_UTIL_CONVERTER_STRINGS_JSON_ESCAPING_H_
33 
34 #include <google/protobuf/stubs/common.h>
35 #include <google/protobuf/stubs/bytestream.h>
36 
37 namespace google {
38 namespace protobuf {
39 namespace util {
40 namespace converter {
41 
42 class JsonEscaping {
43  public:
44   // The minimum value of a unicode high-surrogate code unit in the utf-16
45   // encoding. A high-surrogate is also known as a leading-surrogate.
46   // See http://www.unicode.org/glossary/#high_surrogate_code_unit
47   static const uint16 kMinHighSurrogate = 0xd800;
48 
49   // The maximum value of a unicide high-surrogate code unit in the utf-16
50   // encoding. A high-surrogate is also known as a leading-surrogate.
51   // See http://www.unicode.org/glossary/#high_surrogate_code_unit
52   static const uint16 kMaxHighSurrogate = 0xdbff;
53 
54   // The minimum value of a unicode low-surrogate code unit in the utf-16
55   // encoding. A low-surrogate is also known as a trailing-surrogate.
56   // See http://www.unicode.org/glossary/#low_surrogate_code_unit
57   static const uint16 kMinLowSurrogate = 0xdc00;
58 
59   // The maximum value of a unicode low-surrogate code unit in the utf-16
60   // encoding. A low-surrogate is also known as a trailing surrogate.
61   // See http://www.unicode.org/glossary/#low_surrogate_code_unit
62   static const uint16 kMaxLowSurrogate = 0xdfff;
63 
64   // The minimum value of a unicode supplementary code point.
65   // See http://www.unicode.org/glossary/#supplementary_code_point
66   static const uint32 kMinSupplementaryCodePoint = 0x010000;
67 
68   // The minimum value of a unicode code point.
69   // See http://www.unicode.org/glossary/#code_point
70   static const uint32 kMinCodePoint = 0x000000;
71 
72   // The maximum value of a unicode code point.
73   // See http://www.unicode.org/glossary/#code_point
74   static const uint32 kMaxCodePoint = 0x10ffff;
75 
JsonEscaping()76   JsonEscaping() {}
~JsonEscaping()77   virtual ~JsonEscaping() {}
78 
79   // Escape the given ByteSource to the given ByteSink.
80   static void Escape(strings::ByteSource* input, strings::ByteSink* output);
81 
82  private:
83   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(JsonEscaping);
84 };
85 
86 }  // namespace converter
87 }  // namespace util
88 }  // namespace protobuf
89 
90 #endif  // NET_PROTO2_UTIL_CONVERTER_STRINGS_JSON_ESCAPING_H_
91 }  // namespace google
92