blob: 6a78ed7e47eb1dffa39209cab63a411d324eaf7e [file] [log] [blame] [edit]
// 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