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 7 // met: 8 // 9 // * Redistributions of source code must retain the above copyright 10 // notice, this list of conditions and the following disclaimer. 11 // * Redistributions in binary form must reproduce the above 12 // copyright notice, this list of conditions and the following disclaimer 13 // in the documentation and/or other materials provided with the 14 // distribution. 15 // * Neither the name of Google Inc. nor the names of its 16 // contributors may be used to endorse or promote products derived from 17 // this software without specific prior written permission. 18 // 19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31 #ifndef GOOGLE_PROTOBUF_UTIL_INTERNAL__JSON_ESCAPING_H__ 32 #define GOOGLE_PROTOBUF_UTIL_INTERNAL__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 // Escape the given ByteSource to the given ByteSink. 83 // This is optimized for the case where the string is all printable 7-bit 84 // ASCII and does not contain a few other characters (such as quotes). 85 static void Escape(StringPiece input, strings::ByteSink* output); 86 87 private: 88 GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(JsonEscaping); 89 }; 90 91 } // namespace converter 92 } // namespace util 93 } // namespace protobuf 94 } // namespace google 95 96 #endif // GOOGLE_PROTOBUF_UTIL_INTERNAL__JSON_ESCAPING_H__ 97