The Tor Browser: toolkit/crashreporter/google-breakpad/src/common/string

toolkit/crashreporter/google-breakpad/src/common/string_conversion.cc@b8a032363ba2 (annotated)

toolkit/crashreporter/google-breakpad/src/common/string_conversion.cc

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 // 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() * sizeof(uint16_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, uint16_t out[2]) {
   const UTF8 *source_ptr = reinterpret_cast<const UTF8 *>(in);
   const UTF8 *source_end_ptr = source_ptr + sizeof(char);
   uint16_t *target_ptr = out;
   uint16_t *target_end_ptr = target_ptr + 2 * sizeof(uint16_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<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() * sizeof(uint16_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, 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 * sizeof(uint16_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 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_ptr<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

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toolkit/crashreporter/google-breakpad/src/common/string_conversion.cc@b8a032363ba2 (annotated)

toolkit/crashreporter/google-breakpad/src/common/string_conversion.cc