| /* |
| * Copyright (C) 2014 Apple 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: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "config.h" |
| #include <wtf/text/icu/UTextProvider.h> |
| |
| #include <algorithm> |
| #include <string.h> |
| |
| namespace WTF { |
| |
| // Relocate pointer from source into destination as required. |
| static inline void fixPointer(const UText* source, UText* destination, const void*& pointer) |
| { |
| if (pointer >= source->pExtra && pointer < static_cast<char*>(source->pExtra) + source->extraSize) { |
| // Pointer references source extra buffer. |
| pointer = static_cast<char*>(destination->pExtra) + (static_cast<const char*>(pointer) - static_cast<const char*>(source->pExtra)); |
| } else if (pointer >= source && pointer < reinterpret_cast<const char*>(source) + source->sizeOfStruct) { |
| // Pointer references source text structure, but not source extra buffer. |
| pointer = reinterpret_cast<char*>(destination) + (static_cast<const char*>(pointer) - reinterpret_cast<const char*>(source)); |
| } |
| } |
| |
| UText* uTextCloneImpl(UText* destination, const UText* source, UBool deep, UErrorCode* status) |
| { |
| ASSERT_UNUSED(deep, !deep); |
| if (U_FAILURE(*status)) |
| return nullptr; |
| int32_t extraSize = source->extraSize; |
| destination = utext_setup(destination, extraSize, status); |
| if (U_FAILURE(*status)) |
| return destination; |
| void* extraNew = destination->pExtra; |
| int32_t flags = destination->flags; |
| int sizeToCopy = std::min(source->sizeOfStruct, destination->sizeOfStruct); |
| memcpy(destination, source, sizeToCopy); |
| destination->pExtra = extraNew; |
| destination->flags = flags; |
| memcpy(destination->pExtra, source->pExtra, extraSize); |
| fixPointer(source, destination, destination->context); |
| fixPointer(source, destination, destination->p); |
| fixPointer(source, destination, destination->q); |
| ASSERT(!destination->r); |
| const void* chunkContents = static_cast<const void*>(destination->chunkContents); |
| fixPointer(source, destination, chunkContents); |
| destination->chunkContents = static_cast<const UChar*>(chunkContents); |
| return destination; |
| } |
| |
| } // namespace WTF |