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      1 /*
      2  * Copyright (C) 2006, 2007 Apple Computer, 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 COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "JSStringRefCF.h"
     28 
     29 #include "APICast.h"
     30 #include "InitializeThreading.h"
     31 #include "JSStringRef.h"
     32 #include "OpaqueJSString.h"
     33 #include <runtime/UString.h>
     34 #include <runtime/JSValue.h>
     35 #include <wtf/OwnArrayPtr.h>
     36 
     37 JSStringRef JSStringCreateWithCFString(CFStringRef string)
     38 {
     39     JSC::initializeThreading();
     40 
     41     // We cannot use CFIndex here since CFStringGetLength can return values larger than
     42     // it can hold.  (<rdar://problem/6806478>)
     43     size_t length = CFStringGetLength(string);
     44     if (length) {
     45         OwnArrayPtr<UniChar> buffer(new UniChar[length]);
     46         CFStringGetCharacters(string, CFRangeMake(0, length), buffer.get());
     47         COMPILE_ASSERT(sizeof(UniChar) == sizeof(UChar), unichar_and_uchar_must_be_same_size);
     48         return OpaqueJSString::create(reinterpret_cast<UChar*>(buffer.get()), length).releaseRef();
     49     } else {
     50         return OpaqueJSString::create(0, 0).releaseRef();
     51     }
     52 }
     53 
     54 CFStringRef JSStringCopyCFString(CFAllocatorRef alloc, JSStringRef string)
     55 {
     56     return CFStringCreateWithCharacters(alloc, reinterpret_cast<const UniChar*>(string->characters()), string->length());
     57 }
     58