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comparison: toolkit/crashreporter/google-breakpad/src/common/string_conversion.cc
toolkit/crashreporter/google-breakpad/src/common/string_conversion.cc
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:3f1d4838f073 |
|---|---|
| 1 // Copyright (c) 2006, Google Inc. | |
| 2 // All rights reserved. | |
| 3 // | |
| 4 // Redistribution and use in source and binary forms, with or without | |
| 5 // modification, are permitted provided that the following conditions are | |
| 6 // met: | |
| 7 // | |
| 8 // * Redistributions of source code must retain the above copyright | |
| 9 // notice, this list of conditions and the following disclaimer. | |
| 10 // * Redistributions in binary form must reproduce the above | |
| 11 // copyright notice, this list of conditions and the following disclaimer | |
| 12 // in the documentation and/or other materials provided with the | |
| 13 // distribution. | |
| 14 // * Neither the name of Google Inc. nor the names of its | |
| 15 // contributors may be used to endorse or promote products derived from | |
| 16 // this software without specific prior written permission. | |
| 17 // | |
| 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 | |
| 30 #include <string.h> | |
| 31 | |
| 32 #include "common/convert_UTF.h" | |
| 33 #include "common/scoped_ptr.h" | |
| 34 #include "common/string_conversion.h" | |
| 35 #include "common/using_std_string.h" | |
| 36 | |
| 37 namespace google_breakpad { | |
| 38 | |
| 39 using std::vector; | |
| 40 | |
| 41 void UTF8ToUTF16(const char *in, vector<uint16_t> *out) { | |
| 42 size_t source_length = strlen(in); | |
| 43 const UTF8 *source_ptr = reinterpret_cast<const UTF8 *>(in); | |
| 44 const UTF8 *source_end_ptr = source_ptr + source_length; | |
| 45 // Erase the contents and zero fill to the expected size | |
| 46 out->clear(); | |
| 47 out->insert(out->begin(), source_length, 0); | |
| 48 uint16_t *target_ptr = &(*out)[0]; | |
| 49 uint16_t *target_end_ptr = target_ptr + out->capacity() * sizeof(uint16_t); | |
| 50 ConversionResult result = ConvertUTF8toUTF16(&source_ptr, source_end_ptr, | |
| 51 &target_ptr, target_end_ptr, | |
| 52 strictConversion); | |
| 53 | |
| 54 // Resize to be the size of the # of converted characters + NULL | |
| 55 out->resize(result == conversionOK ? target_ptr - &(*out)[0] + 1: 0); | |
| 56 } | |
| 57 | |
| 58 int UTF8ToUTF16Char(const char *in, int in_length, uint16_t out[2]) { | |
| 59 const UTF8 *source_ptr = reinterpret_cast<const UTF8 *>(in); | |
| 60 const UTF8 *source_end_ptr = source_ptr + sizeof(char); | |
| 61 uint16_t *target_ptr = out; | |
| 62 uint16_t *target_end_ptr = target_ptr + 2 * sizeof(uint16_t); | |
| 63 out[0] = out[1] = 0; | |
| 64 | |
| 65 // Process one character at a time | |
| 66 while (1) { | |
| 67 ConversionResult result = ConvertUTF8toUTF16(&source_ptr, source_end_ptr, | |
| 68 &target_ptr, target_end_ptr, | |
| 69 strictConversion); | |
| 70 | |
| 71 if (result == conversionOK) | |
| 72 return static_cast<int>(source_ptr - reinterpret_cast<const UTF8 *>(in)); | |
| 73 | |
| 74 // Add another character to the input stream and try again | |
| 75 source_ptr = reinterpret_cast<const UTF8 *>(in); | |
| 76 ++source_end_ptr; | |
| 77 | |
| 78 if (source_end_ptr > reinterpret_cast<const UTF8 *>(in) + in_length) | |
| 79 break; | |
| 80 } | |
| 81 | |
| 82 return 0; | |
| 83 } | |
| 84 | |
| 85 void UTF32ToUTF16(const wchar_t *in, vector<uint16_t> *out) { | |
| 86 size_t source_length = wcslen(in); | |
| 87 const UTF32 *source_ptr = reinterpret_cast<const UTF32 *>(in); | |
| 88 const UTF32 *source_end_ptr = source_ptr + source_length; | |
| 89 // Erase the contents and zero fill to the expected size | |
| 90 out->clear(); | |
| 91 out->insert(out->begin(), source_length, 0); | |
| 92 uint16_t *target_ptr = &(*out)[0]; | |
| 93 uint16_t *target_end_ptr = target_ptr + out->capacity() * sizeof(uint16_t); | |
| 94 ConversionResult result = ConvertUTF32toUTF16(&source_ptr, source_end_ptr, | |
| 95 &target_ptr, target_end_ptr, | |
| 96 strictConversion); | |
| 97 | |
| 98 // Resize to be the size of the # of converted characters + NULL | |
| 99 out->resize(result == conversionOK ? target_ptr - &(*out)[0] + 1: 0); | |
| 100 } | |
| 101 | |
| 102 void UTF32ToUTF16Char(wchar_t in, uint16_t out[2]) { | |
| 103 const UTF32 *source_ptr = reinterpret_cast<const UTF32 *>(&in); | |
| 104 const UTF32 *source_end_ptr = source_ptr + 1; | |
| 105 uint16_t *target_ptr = out; | |
| 106 uint16_t *target_end_ptr = target_ptr + 2 * sizeof(uint16_t); | |
| 107 out[0] = out[1] = 0; | |
| 108 ConversionResult result = ConvertUTF32toUTF16(&source_ptr, source_end_ptr, | |
| 109 &target_ptr, target_end_ptr, | |
| 110 strictConversion); | |
| 111 | |
| 112 if (result != conversionOK) { | |
| 113 out[0] = out[1] = 0; | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 static inline uint16_t Swap(uint16_t value) { | |
| 118 return (value >> 8) | static_cast<uint16_t>(value << 8); | |
| 119 } | |
| 120 | |
| 121 string UTF16ToUTF8(const vector<uint16_t> &in, bool swap) { | |
| 122 const UTF16 *source_ptr = &in[0]; | |
| 123 scoped_ptr<uint16_t> source_buffer; | |
| 124 | |
| 125 // If we're to swap, we need to make a local copy and swap each byte pair | |
| 126 if (swap) { | |
| 127 int idx = 0; | |
| 128 source_buffer.reset(new uint16_t[in.size()]); | |
| 129 UTF16 *source_buffer_ptr = source_buffer.get(); | |
| 130 for (vector<uint16_t>::const_iterator it = in.begin(); | |
| 131 it != in.end(); ++it, ++idx) | |
| 132 source_buffer_ptr[idx] = Swap(*it); | |
| 133 | |
| 134 source_ptr = source_buffer.get(); | |
| 135 } | |
| 136 | |
| 137 // The maximum expansion would be 4x the size of the input string. | |
| 138 const UTF16 *source_end_ptr = source_ptr + in.size(); | |
| 139 size_t target_capacity = in.size() * 4; | |
| 140 scoped_array<UTF8> target_buffer(new UTF8[target_capacity]); | |
| 141 UTF8 *target_ptr = target_buffer.get(); | |
| 142 UTF8 *target_end_ptr = target_ptr + target_capacity; | |
| 143 ConversionResult result = ConvertUTF16toUTF8(&source_ptr, source_end_ptr, | |
| 144 &target_ptr, target_end_ptr, | |
| 145 strictConversion); | |
| 146 | |
| 147 if (result == conversionOK) { | |
| 148 const char *targetPtr = reinterpret_cast<const char *>(target_buffer.get()); | |
| 149 return targetPtr; | |
| 150 } | |
| 151 | |
| 152 return ""; | |
| 153 } | |
| 154 | |
| 155 } // namespace google_breakpad |
