/thirdparty/breakpad/common/string_conversion.cc
http://github.com/tomahawk-player/tomahawk · C++ · 154 lines · 95 code · 23 blank · 36 comment · 13 complexity · 8a27df77ef7e8dcc15272c881bc43993 MD5 · raw file
- // 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 "common/convert_UTF.h"
- #include "processor/scoped_ptr.h"
- #include "common/string_conversion.h"
- #include <string.h>
- namespace google_breakpad {
- using std::string;
- using std::vector;
- void UTF8ToUTF16(const char *in, vector<u_int16_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);
- u_int16_t *target_ptr = &(*out)[0];
- u_int16_t *target_end_ptr = target_ptr + out->capacity() * sizeof(u_int16_t);
- 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, u_int16_t out[2]) {
- const UTF8 *source_ptr = reinterpret_cast<const UTF8 *>(in);
- const UTF8 *source_end_ptr = source_ptr + sizeof(char);
- u_int16_t *target_ptr = out;
- u_int16_t *target_end_ptr = target_ptr + 2 * sizeof(u_int16_t);
- 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<u_int16_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);
- u_int16_t *target_ptr = &(*out)[0];
- u_int16_t *target_end_ptr = target_ptr + out->capacity() * sizeof(u_int16_t);
- 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, u_int16_t out[2]) {
- const UTF32 *source_ptr = reinterpret_cast<const UTF32 *>(&in);
- const UTF32 *source_end_ptr = source_ptr + 1;
- u_int16_t *target_ptr = out;
- u_int16_t *target_end_ptr = target_ptr + 2 * sizeof(u_int16_t);
- 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 u_int16_t Swap(u_int16_t value) {
- return (value >> 8) | (value << 8);
- }
- string UTF16ToUTF8(const vector<u_int16_t> &in, bool swap) {
- const UTF16 *source_ptr = &in[0];
- scoped_ptr<u_int16_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 u_int16_t[in.size()]);
- UTF16 *source_buffer_ptr = source_buffer.get();
- for (vector<u_int16_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