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Copy pathJSStringRefCF.cpp
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67 lines (58 loc) · 3.05 KB
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/*
* Copyright (C) 2006, 2007 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. ``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
* 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 "JSStringRefCF.h"
#include "APICast.h"
#include "InitializeThreading.h"
#include "JSCJSValue.h"
#include "JSStringRef.h"
#include "OpaqueJSString.h"
#include <wtf/StdLibExtras.h>
JSStringRef JSStringCreateWithCFString(CFStringRef string)
{
JSC::initializeThreading();
// We cannot use CFIndex here since CFStringGetLength can return values larger than
// it can hold. (<rdar://problem/6806478>)
size_t length = CFStringGetLength(string);
if (!length)
return OpaqueJSString::create(reinterpret_cast<const LChar*>(""), 0).leakRef();
Vector<LChar, 1024> lcharBuffer(length);
CFIndex usedBufferLength;
CFIndex convertedSize = CFStringGetBytes(string, CFRangeMake(0, length), kCFStringEncodingISOLatin1, 0, false, lcharBuffer.data(), length, &usedBufferLength);
if (static_cast<size_t>(convertedSize) == length && static_cast<size_t>(usedBufferLength) == length)
return OpaqueJSString::create(lcharBuffer.data(), length).leakRef();
auto buffer = std::make_unique<UniChar[]>(length);
CFStringGetCharacters(string, CFRangeMake(0, length), buffer.get());
static_assert(sizeof(UniChar) == sizeof(UChar), "UniChar and UChar must be same size");
return OpaqueJSString::create(reinterpret_cast<UChar*>(buffer.get()), length).leakRef();
}
CFStringRef JSStringCopyCFString(CFAllocatorRef allocator, JSStringRef string)
{
if (!string->length())
return CFSTR("");
if (string->is8Bit())
return CFStringCreateWithBytes(allocator, reinterpret_cast<const UInt8*>(string->characters8()), string->length(), kCFStringEncodingISOLatin1, false);
return CFStringCreateWithCharacters(allocator, reinterpret_cast<const UniChar*>(string->characters16()), string->length());
}