blob: 387a85e798386a5429250e66a845960ce5d8ea25 [file] [log] [blame]
/*
* Copyright (C) 2010 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 "NPRuntimeUtilities.h"
#if ENABLE(NETSCAPE_PLUGIN_API)
#include <string.h>
#include <wtf/text/CString.h>
namespace WebKit {
void* npnMemAlloc(uint32_t size)
{
// We could use fastMalloc here, but there might be plug-ins that mix NPN_MemAlloc/NPN_MemFree with malloc and free,
// so having them be equivalent seems like a good idea.
return malloc(size);
}
void npnMemFree(void* ptr)
{
// We could use fastFree here, but there might be plug-ins that mix NPN_MemAlloc/NPN_MemFree with malloc and free,
// so having them be equivalent seems like a good idea.
free(ptr);
}
NPString createNPString(const CString& string)
{
char* utf8Characters = npnMemNewArray<char>(string.length());
memcpy(utf8Characters, string.data(), string.length());
NPString npString;
npString.UTF8Characters = utf8Characters;
npString.UTF8Length = string.length();
return npString;
}
NPObject* createNPObject(NPP npp, NPClass* npClass)
{
ASSERT(npClass);
NPObject* npObject;
if (npClass->allocate)
npObject = npClass->allocate(npp, npClass);
else
npObject = npnMemNew<NPObject>();
npObject->_class = npClass;
npObject->referenceCount = 1;
return npObject;
}
void deallocateNPObject(NPObject* npObject)
{
ASSERT(npObject);
if (!npObject)
return;
if (npObject->_class->deallocate)
npObject->_class->deallocate(npObject);
else
npnMemFree(npObject);
}
void retainNPObject(NPObject* npObject)
{
ASSERT(npObject);
if (!npObject)
return;
npObject->referenceCount++;
}
bool trySafeReleaseNPObject(NPObject* npObject)
{
ASSERT(npObject);
if (!npObject)
return true;
ASSERT(npObject->referenceCount >= 1);
npObject->referenceCount--;
if (npObject->referenceCount)
return true;
if (npObject->_class->deallocate)
return false;
deallocateNPObject(npObject);
return true;
}
void releaseNPObject(NPObject* npObject)
{
ASSERT(npObject);
if (!npObject)
return;
ASSERT(npObject->referenceCount >= 1);
npObject->referenceCount--;
if (!npObject->referenceCount)
deallocateNPObject(npObject);
}
void releaseNPVariantValue(NPVariant* variant)
{
ASSERT(variant);
switch (variant->type) {
case NPVariantType_Void:
case NPVariantType_Null:
case NPVariantType_Bool:
case NPVariantType_Int32:
case NPVariantType_Double:
// Nothing to do.
break;
case NPVariantType_String:
npnMemFree(const_cast<NPUTF8*>(variant->value.stringValue.UTF8Characters));
variant->value.stringValue.UTF8Characters = 0;
variant->value.stringValue.UTF8Length = 0;
break;
case NPVariantType_Object:
releaseNPObject(variant->value.objectValue);
variant->value.objectValue = 0;
break;
}
variant->type = NPVariantType_Void;
}
} // namespace WebKit
#endif // ENABLE(NETSCAPE_PLUGIN_API)