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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
37namespace google {
38namespace protobuf {
39namespace util {
40namespace converter {
41
42class 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
76  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