PlugIn.subproj/CFPlugIn_Instance.c

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*      CFPlugIn_Instance.c
  26         Copyright 1999-2002, Apple, Inc. All rights reserved.
  27         Responsibility: Doug Davidson
  28 */
  29
  30 #include "CFBundle_Internal.h"
  31 #include "CFInternal.h"
  32
  33 static CFTypeID __kCFPlugInInstanceTypeID = _kCFRuntimeNotATypeID;
  34
  35 struct __CFPlugInInstance {
  36     CFRuntimeBase _base;
  37
  38     _CFPFactory *factory;
  39
  40     CFPlugInInstanceGetInterfaceFunction getInterfaceFunction;
  41     CFPlugInInstanceDeallocateInstanceDataFunction deallocateInstanceDataFunction;
  42
  43     uint8_t _instanceData[0];
  44 };
  45
  46 static CFStringRef __CFPlugInInstanceCopyDescription(CFTypeRef cf) {
  47     /* MF:!!! Implement me */
  48     return CFSTR("Some CFPlugInInstance");
  49 }
  50
  51 static void __CFPlugInInstanceDeallocate(CFTypeRef cf) {
  52     CFPlugInInstanceRef instance = (CFPlugInInstanceRef)cf;
  53
  54     __CFGenericValidateType(cf, __kCFPlugInInstanceTypeID);
  55
  56     if (instance->deallocateInstanceDataFunction) {
  57         FAULT_CALLBACK((void **)&(instance->deallocateInstanceDataFunction));
  58         (void)INVOKE_CALLBACK1(instance->deallocateInstanceDataFunction, (void *)(&instance->_instanceData[0]));
  59     }
  60
  61     if (instance->factory) {
  62         _CFPFactoryRemoveInstance(instance->factory);
  63     }
  64 }
  65
  66 static const CFRuntimeClass __CFPlugInInstanceClass = {
  67     0,
  68     "CFPlugInInstance",
  69     NULL,      // init
  70     NULL,      // copy
  71     __CFPlugInInstanceDeallocate,
  72     NULL,      // equal
  73     NULL,      // hash
  74     NULL,      //
  75     __CFPlugInInstanceCopyDescription
  76 };
  77
  78 __private_extern__ void __CFPlugInInstanceInitialize(void) {
  79     __kCFPlugInInstanceTypeID = _CFRuntimeRegisterClass(&__CFPlugInInstanceClass);
  80 }
  81
  82 CFTypeID CFPlugInInstanceGetTypeID(void) {
  83     return __kCFPlugInInstanceTypeID;
  84 }
  85 CF_EXPORT CFPlugInInstanceRef CFPlugInInstanceCreateWithInstanceDataSize(CFAllocatorRef allocator, CFIndex instanceDataSize, CFPlugInInstanceDeallocateInstanceDataFunction deallocateInstanceFunction, CFStringRef factoryName, CFPlugInInstanceGetInterfaceFunction getInterfaceFunction) {
  86     CFPlugInInstanceRef instance;
  87     UInt32 size;
  88     size = sizeof(struct __CFPlugInInstance) + instanceDataSize - sizeof(CFRuntimeBase);
  89     instance = (CFPlugInInstanceRef)_CFRuntimeCreateInstance(allocator, __kCFPlugInInstanceTypeID, size, NULL);
  90     if (NULL == instance) {
  91         return NULL;
  92     }
  93
  94     instance->factory = _CFPFactoryFind((CFUUIDRef)factoryName, true);
  95     if (instance->factory) {
  96         _CFPFactoryAddInstance(instance->factory);
  97     }
  98     instance->getInterfaceFunction = getInterfaceFunction;
  99     instance->deallocateInstanceDataFunction = deallocateInstanceFunction;
 100
 101     return instance;
 102 }
 103
 104 CF_EXPORT Boolean CFPlugInInstanceGetInterfaceFunctionTable(CFPlugInInstanceRef instance, CFStringRef interfaceName, void **ftbl) {
 105     void *myFtbl;
 106     Boolean result = false;
 107
 108     if (instance->getInterfaceFunction) {
 109         FAULT_CALLBACK((void **)&(instance->getInterfaceFunction));
 110         result = INVOKE_CALLBACK3(instance->getInterfaceFunction, instance, interfaceName, &myFtbl) ? true : false;
 111     }
 112     if (ftbl) {
 113         *ftbl = (result ? myFtbl : NULL);
 114     }
 115     return result;
 116 }
 117
 118 CF_EXPORT CFStringRef CFPlugInInstanceGetFactoryName(CFPlugInInstanceRef instance) {
 119     return (CFStringRef)_CFPFactoryGetFactoryID(instance->factory);
 120 }
 121
 122 CF_EXPORT void *CFPlugInInstanceGetInstanceData(CFPlugInInstanceRef instance) {
 123     return (void *)(&instance->_instanceData[0]);
 124 }
 125