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Diffstat (limited to 'extensions/source/macosx/spotlight/main.m')
| -rw-r--r-- | extensions/source/macosx/spotlight/main.m | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/extensions/source/macosx/spotlight/main.m b/extensions/source/macosx/spotlight/main.m new file mode 100644 index 000000000000..b9afc65e0f27 --- /dev/null +++ b/extensions/source/macosx/spotlight/main.m @@ -0,0 +1,225 @@ +// +// main.c +// SpotlightTester +// +// Created by Florian Heckl on 10.07.07. +// Copyright (c) 2007 __MyCompanyName__. All rights reserved. +// + + + + + +//============================================================================== +// +// DO NO MODIFY THE CONTENT OF THIS FILE +// +// This file contains the generic CFPlug-in code necessary for your importer +// To complete your importer implement the function in GetMetadataForFile.c +// +//============================================================================== + + + + + + +#include <CoreFoundation/CoreFoundation.h> +#include <CoreFoundation/CFPlugInCOM.h> +#include <CoreServices/CoreServices.h> + +// ----------------------------------------------------------------------------- +// constants +// ----------------------------------------------------------------------------- + + +#define PLUGIN_ID "A3FCC88D-B9A6-4364-8B93-92123C8A2D18" + +// +// Below is the generic glue code for all plug-ins. +// +// You should not have to modify this code aside from changing +// names if you decide to change the names defined in the Info.plist +// + + +// ----------------------------------------------------------------------------- +// typedefs +// ----------------------------------------------------------------------------- + +// The import function to be implemented in GetMetadataForFile.c +Boolean GetMetadataForFile(void *thisInterface, + CFMutableDictionaryRef attributes, + CFStringRef contentTypeUTI, + CFStringRef pathToFile); + +// The layout for an instance of MetaDataImporterPlugIn +typedef struct __MetadataImporterPluginType +{ + MDImporterInterfaceStruct *conduitInterface; + CFUUIDRef factoryID; + UInt32 refCount; +} MetadataImporterPluginType; + +// ----------------------------------------------------------------------------- +// prototypes +// ----------------------------------------------------------------------------- +// Forward declaration for the IUnknown implementation. +// + +MetadataImporterPluginType *AllocMetadataImporterPluginType(CFUUIDRef inFactoryID); +void DeallocMetadataImporterPluginType(MetadataImporterPluginType *thisInstance); +HRESULT MetadataImporterQueryInterface(void *thisInstance,REFIID iid,LPVOID *ppv); +void *MetadataImporterPluginFactory(CFAllocatorRef allocator,CFUUIDRef typeID); +ULONG MetadataImporterPluginAddRef(void *thisInstance); +ULONG MetadataImporterPluginRelease(void *thisInstance); +// ----------------------------------------------------------------------------- +// testInterfaceFtbl definition +// ----------------------------------------------------------------------------- +// The TestInterface function table. +// + +static MDImporterInterfaceStruct testInterfaceFtbl = { + NULL, + MetadataImporterQueryInterface, + MetadataImporterPluginAddRef, + MetadataImporterPluginRelease, + GetMetadataForFile +}; + + +// ----------------------------------------------------------------------------- +// AllocMetadataImporterPluginType +// ----------------------------------------------------------------------------- +// Utility function that allocates a new instance. +// You can do some initial setup for the importer here if you wish +// like allocating globals etc... +// +MetadataImporterPluginType *AllocMetadataImporterPluginType(CFUUIDRef inFactoryID) +{ + MetadataImporterPluginType *theNewInstance; + + theNewInstance = (MetadataImporterPluginType *)malloc(sizeof(MetadataImporterPluginType)); + memset(theNewInstance,0,sizeof(MetadataImporterPluginType)); + + /* Point to the function table */ + theNewInstance->conduitInterface = &testInterfaceFtbl; + + /* Retain and keep an open instance refcount for each factory. */ + theNewInstance->factoryID = CFRetain(inFactoryID); + CFPlugInAddInstanceForFactory(inFactoryID); + + /* This function returns the IUnknown interface so set the refCount to one. */ + theNewInstance->refCount = 1; + return theNewInstance; +} + +// ----------------------------------------------------------------------------- +// DeallocSpotlightTesterMDImporterPluginType +// ----------------------------------------------------------------------------- +// Utility function that deallocates the instance when +// the refCount goes to zero. +// In the current implementation importer interfaces are never deallocated +// but implement this as this might change in the future +// +void DeallocMetadataImporterPluginType(MetadataImporterPluginType *thisInstance) +{ + CFUUIDRef theFactoryID; + + theFactoryID = thisInstance->factoryID; + free(thisInstance); + if (theFactoryID){ + CFPlugInRemoveInstanceForFactory(theFactoryID); + CFRelease(theFactoryID); + } +} + +// ----------------------------------------------------------------------------- +// MetadataImporterQueryInterface +// ----------------------------------------------------------------------------- +// Implementation of the IUnknown QueryInterface function. +// +HRESULT MetadataImporterQueryInterface(void *thisInstance,REFIID iid,LPVOID *ppv) +{ + CFUUIDRef interfaceID; + + interfaceID = CFUUIDCreateFromUUIDBytes(kCFAllocatorDefault,iid); + + if (CFEqual(interfaceID,kMDImporterInterfaceID)){ + /* If the Right interface was requested, bump the ref count, + * set the ppv parameter equal to the instance, and + * return good status. + */ + ((MetadataImporterPluginType*)thisInstance)->conduitInterface->AddRef(thisInstance); + *ppv = thisInstance; + CFRelease(interfaceID); + return S_OK; + }else{ + if (CFEqual(interfaceID,IUnknownUUID)){ + /* If the IUnknown interface was requested, same as above. */ + ((MetadataImporterPluginType*)thisInstance )->conduitInterface->AddRef(thisInstance); + *ppv = thisInstance; + CFRelease(interfaceID); + return S_OK; + }else{ + /* Requested interface unknown, bail with error. */ + *ppv = NULL; + CFRelease(interfaceID); + return E_NOINTERFACE; + } + } +} + +// ----------------------------------------------------------------------------- +// MetadataImporterPluginAddRef +// ----------------------------------------------------------------------------- +// Implementation of reference counting for this type. Whenever an interface +// is requested, bump the refCount for the instance. NOTE: returning the +// refcount is a convention but is not required so don't rely on it. +// +ULONG MetadataImporterPluginAddRef(void *thisInstance) +{ + ((MetadataImporterPluginType *)thisInstance )->refCount += 1; + return ((MetadataImporterPluginType*) thisInstance)->refCount; +} + +// ----------------------------------------------------------------------------- +// SampleCMPluginRelease +// ----------------------------------------------------------------------------- +// When an interface is released, decrement the refCount. +// If the refCount goes to zero, deallocate the instance. +// +ULONG MetadataImporterPluginRelease(void *thisInstance) +{ + ((MetadataImporterPluginType*)thisInstance)->refCount -= 1; + if (((MetadataImporterPluginType*)thisInstance)->refCount == 0){ + DeallocMetadataImporterPluginType((MetadataImporterPluginType*)thisInstance ); + return 0; + }else{ + return ((MetadataImporterPluginType*) thisInstance )->refCount; + } +} + +// ----------------------------------------------------------------------------- +// SpotlightTesterMDImporterPluginFactory +// ----------------------------------------------------------------------------- +// Implementation of the factory function for this type. +// +void *MetadataImporterPluginFactory(CFAllocatorRef allocator,CFUUIDRef typeID) +{ + MetadataImporterPluginType *result; + CFUUIDRef uuid; + + /* If correct type is being requested, allocate an + * instance of TestType and return the IUnknown interface. + */ + if (CFEqual(typeID,kMDImporterTypeID)){ + uuid = CFUUIDCreateFromString(kCFAllocatorDefault,CFSTR(PLUGIN_ID)); + result = AllocMetadataImporterPluginType(uuid); + CFRelease(uuid); + return result; + } + /* If the requested type is incorrect, return NULL. */ + return NULL; +} + |