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      1 /*
      2  * Copyright (C) 2006 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 "SharedBuffer.h"
     28 
     29 #include "WebCoreObjCExtras.h"
     30 #include <runtime/InitializeThreading.h>
     31 #include <string.h>
     32 #include <wtf/PassRefPtr.h>
     33 
     34 #ifdef BUILDING_ON_TIGER
     35 typedef unsigned NSUInteger;
     36 #endif
     37 
     38 using namespace WebCore;
     39 
     40 @interface WebCoreSharedBufferData : NSData
     41 {
     42     RefPtr<SharedBuffer> sharedBuffer;
     43 }
     44 
     45 - (id)initWithSharedBuffer:(SharedBuffer*)buffer;
     46 @end
     47 
     48 @implementation WebCoreSharedBufferData
     49 
     50 + (void)initialize
     51 {
     52     JSC::initializeThreading();
     53     WTF::initializeMainThreadToProcessMainThread();
     54 #ifndef BUILDING_ON_TIGER
     55     WebCoreObjCFinalizeOnMainThread(self);
     56 #endif
     57 }
     58 
     59 - (void)dealloc
     60 {
     61     if (WebCoreObjCScheduleDeallocateOnMainThread([WebCoreSharedBufferData class], self))
     62         return;
     63 
     64     [super dealloc];
     65 }
     66 
     67 - (void)finalize
     68 {
     69     [super finalize];
     70 }
     71 
     72 - (id)initWithSharedBuffer:(SharedBuffer*)buffer
     73 {
     74     self = [super init];
     75 
     76     if (self)
     77         sharedBuffer = buffer;
     78 
     79     return self;
     80 }
     81 
     82 - (NSUInteger)length
     83 {
     84     return sharedBuffer->size();
     85 }
     86 
     87 - (const void *)bytes
     88 {
     89     return reinterpret_cast<const void*>(sharedBuffer->data());
     90 }
     91 
     92 @end
     93 
     94 namespace WebCore {
     95 
     96 PassRefPtr<SharedBuffer> SharedBuffer::wrapNSData(NSData *nsData)
     97 {
     98     return adoptRef(new SharedBuffer((CFDataRef)nsData));
     99 }
    100 
    101 NSData *SharedBuffer::createNSData()
    102 {
    103     return [[WebCoreSharedBufferData alloc] initWithSharedBuffer:this];
    104 }
    105 
    106 CFDataRef SharedBuffer::createCFData()
    107 {
    108     if (m_cfData) {
    109         CFRetain(m_cfData.get());
    110         return m_cfData.get();
    111     }
    112 
    113     return (CFDataRef)RetainPtr<WebCoreSharedBufferData>(AdoptNS, [[WebCoreSharedBufferData alloc] initWithSharedBuffer:this]).releaseRef();
    114 }
    115 
    116 PassRefPtr<SharedBuffer> SharedBuffer::createWithContentsOfFile(const String& filePath)
    117 {
    118     NSData *resourceData = [NSData dataWithContentsOfFile:filePath];
    119     if (resourceData)
    120         return SharedBuffer::wrapNSData(resourceData);
    121     return 0;
    122 }
    123 
    124 }
    125 
    126