diff options
Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/common/string_conversion.cc')
| -rw-r--r-- | toolkit/crashreporter/google-breakpad/src/common/string_conversion.cc | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/common/string_conversion.cc b/toolkit/crashreporter/google-breakpad/src/common/string_conversion.cc new file mode 100644 index 0000000000..11d60a3664 --- /dev/null +++ b/toolkit/crashreporter/google-breakpad/src/common/string_conversion.cc @@ -0,0 +1,155 @@ +// 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 |