1/* 2 * Copyright (C) 2014 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "UTextProvider.h" 28 29#include <string.h> 30 31namespace WebCore { 32 33// Relocate pointer from source into destination as required. 34static inline void fixPointer(const UText* source, UText* destination, const void*& pointer) 35{ 36 if (pointer >= source->pExtra && pointer < static_cast<char*>(source->pExtra) + source->extraSize) { 37 // Pointer references source extra buffer. 38 pointer = static_cast<char*>(destination->pExtra) + (static_cast<const char*>(pointer) - static_cast<const char*>(source->pExtra)); 39 } else if (pointer >= source && pointer < reinterpret_cast<const char*>(source) + source->sizeOfStruct) { 40 // Pointer references source text structure, but not source extra buffer. 41 pointer = reinterpret_cast<char*>(destination) + (static_cast<const char*>(pointer) - reinterpret_cast<const char*>(source)); 42 } 43} 44 45UText* uTextCloneImpl(UText* destination, const UText* source, UBool deep, UErrorCode* status) 46{ 47 ASSERT_UNUSED(deep, !deep); 48 if (U_FAILURE(*status)) 49 return nullptr; 50 int32_t extraSize = source->extraSize; 51 destination = utext_setup(destination, extraSize, status); 52 if (U_FAILURE(*status)) 53 return destination; 54 void* extraNew = destination->pExtra; 55 int32_t flags = destination->flags; 56 int sizeToCopy = std::min(source->sizeOfStruct, destination->sizeOfStruct); 57 memcpy(destination, source, sizeToCopy); 58 destination->pExtra = extraNew; 59 destination->flags = flags; 60 memcpy(destination->pExtra, source->pExtra, extraSize); 61 fixPointer(source, destination, destination->context); 62 fixPointer(source, destination, destination->p); 63 fixPointer(source, destination, destination->q); 64 ASSERT(!destination->r); 65 const void* chunkContents = static_cast<const void*>(destination->chunkContents); 66 fixPointer(source, destination, chunkContents); 67 destination->chunkContents = static_cast<const UChar*>(chunkContents); 68 return destination; 69} 70 71} // namespace WebCore 72