| // Copyright (c) 2006, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include <string.h> |
| |
| #include "common/convert_UTF.h" |
| #include "common/scoped_ptr.h" |
| #include "common/string_conversion.h" |
| #include "common/using_std_string.h" |
| |
| namespace google_breakpad { |
| |
| using std::vector; |
| |
| void UTF8ToUTF16(const char* in, vector<uint16_t>* out) { |
| size_t source_length = strlen(in); |
| const UTF8* source_ptr = reinterpret_cast<const UTF8*>(in); |
| const UTF8* source_end_ptr = source_ptr + source_length; |
| // Erase the contents and zero fill to the expected size |
| out->clear(); |
| out->insert(out->begin(), source_length, 0); |
| uint16_t* target_ptr = &(*out)[0]; |
| uint16_t* target_end_ptr = target_ptr + out->capacity(); |
| ConversionResult result = ConvertUTF8toUTF16(&source_ptr, source_end_ptr, |
| &target_ptr, target_end_ptr, |
| strictConversion); |
| |
| // Resize to be the size of the # of converted characters + NULL |
| out->resize(result == conversionOK ? target_ptr - &(*out)[0] + 1: 0); |
| } |
| |
| int UTF8ToUTF16Char(const char* in, int in_length, uint16_t out[2]) { |
| const UTF8* source_ptr = reinterpret_cast<const UTF8*>(in); |
| const UTF8* source_end_ptr = source_ptr + 1; |
| uint16_t* target_ptr = out; |
| uint16_t* target_end_ptr = target_ptr + 2; |
| out[0] = out[1] = 0; |
| |
| // Process one character at a time |
| while (1) { |
| ConversionResult result = ConvertUTF8toUTF16(&source_ptr, source_end_ptr, |
| &target_ptr, target_end_ptr, |
| strictConversion); |
| |
| if (result == conversionOK) |
| return static_cast<int>(source_ptr - reinterpret_cast<const UTF8*>(in)); |
| |
| // Add another character to the input stream and try again |
| source_ptr = reinterpret_cast<const UTF8*>(in); |
| ++source_end_ptr; |
| |
| if (source_end_ptr > reinterpret_cast<const UTF8*>(in) + in_length) |
| break; |
| } |
| |
| return 0; |
| } |
| |
| void UTF32ToUTF16(const wchar_t* in, vector<uint16_t>* out) { |
| size_t source_length = wcslen(in); |
| const UTF32* source_ptr = reinterpret_cast<const UTF32*>(in); |
| const UTF32* source_end_ptr = source_ptr + source_length; |
| // Erase the contents and zero fill to the expected size |
| out->clear(); |
| out->insert(out->begin(), source_length, 0); |
| uint16_t* target_ptr = &(*out)[0]; |
| uint16_t* target_end_ptr = target_ptr + out->capacity(); |
| ConversionResult result = ConvertUTF32toUTF16(&source_ptr, source_end_ptr, |
| &target_ptr, target_end_ptr, |
| strictConversion); |
| |
| // Resize to be the size of the # of converted characters + NULL |
| out->resize(result == conversionOK ? target_ptr - &(*out)[0] + 1: 0); |
| } |
| |
| void UTF32ToUTF16Char(wchar_t in, uint16_t out[2]) { |
| const UTF32* source_ptr = reinterpret_cast<const UTF32*>(&in); |
| const UTF32* source_end_ptr = source_ptr + 1; |
| uint16_t* target_ptr = out; |
| uint16_t* target_end_ptr = target_ptr + 2; |
| out[0] = out[1] = 0; |
| ConversionResult result = ConvertUTF32toUTF16(&source_ptr, source_end_ptr, |
| &target_ptr, target_end_ptr, |
| strictConversion); |
| |
| if (result != conversionOK) { |
| out[0] = out[1] = 0; |
| } |
| } |
| |
| static inline uint16_t Swap(uint16_t value) { |
| return (value >> 8) | static_cast<uint16_t>(value << 8); |
| } |
| |
| string UTF16ToUTF8(const vector<uint16_t>& in, bool swap) { |
| const UTF16* source_ptr = &in[0]; |
| scoped_array<uint16_t> source_buffer; |
| |
| // If we're to swap, we need to make a local copy and swap each byte pair |
| if (swap) { |
| int idx = 0; |
| source_buffer.reset(new uint16_t[in.size()]); |
| UTF16* source_buffer_ptr = source_buffer.get(); |
| for (vector<uint16_t>::const_iterator it = in.begin(); |
| it != in.end(); ++it, ++idx) |
| source_buffer_ptr[idx] = Swap(*it); |
| |
| source_ptr = source_buffer.get(); |
| } |
| |
| // The maximum expansion would be 4x the size of the input string. |
| const UTF16* source_end_ptr = source_ptr + in.size(); |
| size_t target_capacity = in.size() * 4; |
| scoped_array<UTF8> target_buffer(new UTF8[target_capacity]); |
| UTF8* target_ptr = target_buffer.get(); |
| UTF8* target_end_ptr = target_ptr + target_capacity; |
| ConversionResult result = ConvertUTF16toUTF8(&source_ptr, source_end_ptr, |
| &target_ptr, target_end_ptr, |
| strictConversion); |
| |
| if (result == conversionOK) { |
| const char* targetPtr = reinterpret_cast<const char*>(target_buffer.get()); |
| return targetPtr; |
| } |
| |
| return ""; |
| } |
| |
| } // namespace google_breakpad |