- Add an initial Sequel Pro QuickLook plugin, written by bibiko, as a build dependency

3 files changed, 651 insertions, 0 deletions

diff --git a/Source/GeneratePreviewForURL.m b/Source/GeneratePreviewForURL.m
new file mode 100644
index 00000000..30ca2ae2
--- /dev/null
+++ b/Source/GeneratePreviewForURL.m
@@ -0,0 +1,347 @@
+//  GeneratePreviewForURL.m
+//  sequel-pro
+//
+//  Created by Hans-Jörg Bibiko on Aug 04, 2010
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+//  More info at <http://code.google.com/p/sequel-pro/>
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreServices/CoreServices.h>
+#include <QuickLook/QuickLook.h>
+#import <Cocoa/Cocoa.h>
+
+/* -----------------------------------------------------------------------------
+   Generate a preview for file
+
+   This function's job is to create preview for designated file
+   ----------------------------------------------------------------------------- */
+
+static char base64encodingTable[64] = {
+'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
+'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
+'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
+'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/' };
+
+@interface NSData (QLDataAdditions)
+
+- (NSString *)base64EncodingWithLineLength:(NSUInteger)lineLength;
+
+@end
+
+
+@implementation NSData (QLDataAdditions)
+
+/*
+ * Derived from http://colloquy.info/project/browser/trunk/NSDataAdditions.m?rev=1576
+ *  Created by khammond on Mon Oct 29 2001.
+ *  Formatted by Timothy Hatcher on Sun Jul 4 2004.
+ *  Copyright (c) 2001 Kyle Hammond. All rights reserved.
+ *  Original development by Dave Winer.
+ *
+ * Convert self to a base64 encoded NSString
+ */
+- (NSString *) base64EncodingWithLineLength:(NSUInteger)lineLength {
+
+	const unsigned char *bytes = [self bytes];
+	NSUInteger ixtext = 0;
+	NSUInteger lentext = [self length];
+	NSInteger ctremaining = 0;
+	unsigned char inbuf[3], outbuf[4];
+	short i = 0;
+	short charsonline = 0, ctcopy = 0;
+	NSUInteger ix = 0;
+
+	NSMutableString *base64 = [NSMutableString stringWithCapacity:lentext];
+
+	while(1) {
+		ctremaining = lentext - ixtext;
+		if( ctremaining <= 0 ) break;
+
+		for( i = 0; i < 3; i++ ) {
+			ix = ixtext + i;
+			if( ix < lentext ) inbuf[i] = bytes[ix];
+			else inbuf [i] = 0;
+		}
+
+		outbuf [0] = (inbuf [0] & 0xFC) >> 2;
+		outbuf [1] = ((inbuf [0] & 0x03) << 4) | ((inbuf [1] & 0xF0) >> 4);
+		outbuf [2] = ((inbuf [1] & 0x0F) << 2) | ((inbuf [2] & 0xC0) >> 6);
+		outbuf [3] = inbuf [2] & 0x3F;
+		ctcopy = 4;
+
+		switch( ctremaining ) {
+			case 1: 
+			ctcopy = 2; 
+			break;
+			case 2: 
+			ctcopy = 3; 
+			break;
+		}
+
+		for( i = 0; i < ctcopy; i++ )
+			[base64 appendFormat:@"%c", base64encodingTable[outbuf[i]]];
+
+		for( i = ctcopy; i < 4; i++ )
+			[base64 appendFormat:@"%c",'='];
+
+		ixtext += 3;
+		charsonline += 4;
+
+		if( lineLength > 0 ) {
+			if (charsonline >= lineLength) {
+				charsonline = 0;
+				[base64 appendString:@"\n"];
+			}
+		}
+	}
+
+	return base64;
+}
+@end
+
+@interface NSString (QLStringAdditions)
+
++ (NSString *)stringForByteSize:(long long)byteSize;
+
+@end
+
+@implementation NSString (QLStringAdditions)
+
+/*
+ * Returns a human readable version string of the supplied byte size.
+ */
++ (NSString *)stringForByteSize:(long long)byteSize
+{
+	CGFloat size = byteSize;
+	
+	NSNumberFormatter *numberFormatter = [[[NSNumberFormatter alloc] init] autorelease];
+	
+	[numberFormatter setNumberStyle:NSNumberFormatterDecimalStyle];
+	
+	if (size < 1023) {
+		[numberFormatter setFormat:@"#,##0 B"];
+		
+		return [numberFormatter stringFromNumber:[NSNumber numberWithInteger:size]];
+	}
+	
+	size = (size / 1024);
+	
+	if (size < 1023) {
+		[numberFormatter setFormat:@"#,##0.0 KiB"];
+		
+		return [numberFormatter stringFromNumber:[NSNumber numberWithDouble:size]];
+	}
+	
+	size = (size / 1024);
+	
+	if (size < 1023) {
+		[numberFormatter setFormat:@"#,##0.0 MiB"];
+		
+		return [numberFormatter stringFromNumber:[NSNumber numberWithDouble:size]];
+	}
+	
+	size = (size / 1024);
+	
+	if (size < 1023) {
+		[numberFormatter setFormat:@"#,##0.0 GiB"];
+		
+		return [numberFormatter stringFromNumber:[NSNumber numberWithDouble:size]];
+	}
+
+	size = (size / 1024);
+	
+	[numberFormatter setFormat:@"#,##0.0 TiB"];
+	
+	return [numberFormatter stringFromNumber:[NSNumber numberWithDouble:size]];
+}
+@end
+
+OSStatus GeneratePreviewForURL(void *thisInterface, QLPreviewRequestRef preview, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options)
+{
+
+	NSURL *myURL = (NSURL *)url;
+	NSString *urlExtension = [[[myURL path] pathExtension] lowercaseString];
+	NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+
+	NSError *templateReadError = nil;
+
+	NSImage *iconImage = [[NSWorkspace sharedWorkspace] iconForFile:[myURL path]];
+
+	NSMutableString *html;
+	NSString *template = nil;
+
+	if (false == QLPreviewRequestIsCancelled(preview)) {
+
+		NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:[myURL path] error:nil];
+
+		if([urlExtension isEqualToString:@"spf"]) {
+
+			NSError *readError = nil;
+			NSString *convError = nil;
+			NSPropertyListFormat format;
+			NSDictionary *spf = nil;
+
+			NSData *pData = [NSData dataWithContentsOfFile:[myURL path] options:NSUncachedRead error:&readError];
+
+			spf = [[NSPropertyListSerialization propertyListFromData:pData 
+					mutabilityOption:NSPropertyListImmutable format:&format errorDescription:&convError] retain];
+
+			if(!spf || readError != nil || [convError length] || !(format == NSPropertyListXMLFormat_v1_0 || format == NSPropertyListBinaryFormat_v1_0)) {
+				if(spf) [spf release];
+				[pool release];
+				return noErr;
+			}
+
+			if([[spf objectForKey:@"format"] isEqualToString:@"connection"]) {
+				template = [NSString stringWithContentsOfFile:[[NSBundle bundleWithIdentifier:@"com.google.code.sequel-pro.qlgenerator"] pathForResource:@"SPQLPluginConnectionTemplate" ofType:@"html"] 
+					encoding:NSUTF8StringEncoding error:&templateReadError];
+
+				if (template == nil || ![template length] || templateReadError != nil) {
+					[pool release];
+					return noErr;
+				}
+
+				NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
+				[dateFormatter setTimeStyle:NSDateFormatterShortStyle];
+				[dateFormatter setDateStyle:NSDateFormatterMediumStyle];
+				[dateFormatter setLocale:[NSLocale currentLocale]];
+
+				NSString *name = @"••••";
+				NSString *host = @"••••";
+				NSString *user = @"••••";
+				NSString *database = @"••••";
+				NSString *autoConnect = ([[spf objectForKey:@"auto_connect"] boolValue]) ? @"checked" : @"";
+
+				if([[spf objectForKey:@"data"] isKindOfClass:[NSDictionary class]]) {
+					if([[spf objectForKey:@"data"] objectForKey:@"connection"] && [[[spf objectForKey:@"data"] objectForKey:@"connection"] objectForKey:@"name"])
+						name = [[[spf objectForKey:@"data"] objectForKey:@"connection"] objectForKey:@"name"];
+					else
+						name = @"";
+					if([[spf objectForKey:@"data"] objectForKey:@"connection"] && [[[spf objectForKey:@"data"] objectForKey:@"connection"] objectForKey:@"host"])
+						host = [[[spf objectForKey:@"data"] objectForKey:@"connection"] objectForKey:@"host"];
+					else
+						host = @"";
+					if([[spf objectForKey:@"data"] objectForKey:@"connection"] && [[[spf objectForKey:@"data"] objectForKey:@"connection"] objectForKey:@"user"])
+						user = [[[spf objectForKey:@"data"] objectForKey:@"connection"] objectForKey:@"user"];
+					else
+						user = @"";
+					if([[spf objectForKey:@"data"] objectForKey:@"connection"] && [[[spf objectForKey:@"data"] objectForKey:@"connection"] objectForKey:@"database"])
+						database = [[[spf objectForKey:@"data"] objectForKey:@"connection"] objectForKey:@"database"];
+					else
+						database = @"";
+				}
+
+				// compose the html
+				html = [[NSMutableString alloc] initWithString:[NSString stringWithFormat:template,
+					[[iconImage TIFFRepresentationUsingCompression:NSTIFFCompressionJPEG factor:0.01] base64EncodingWithLineLength:0],
+					[spf objectForKey:@"rdbms_type"],
+					[spf objectForKey:@"rdbms_version"],
+					[name stringByReplacingOccurrencesOfString:@" " withString:@"&nbsp;"],
+					[host stringByReplacingOccurrencesOfString:@" " withString:@"&nbsp;"],
+					[user stringByReplacingOccurrencesOfString:@" " withString:@"&nbsp;"],
+					[database stringByReplacingOccurrencesOfString:@" " withString:@"&nbsp;"],
+					[NSString stringForByteSize:[[fileAttributes objectForKey:NSFileSize] longLongValue]],
+					[dateFormatter stringFromDate:[fileAttributes fileModificationDate]],
+					autoConnect
+				]];
+
+				[dateFormatter release];
+				[spf release];
+
+			}
+			else if([[spf objectForKey:@"format"] isEqualToString:@"content filters"]) {
+				template = [NSString stringWithContentsOfFile:[[NSBundle bundleWithIdentifier:@"com.google.code.sequel-pro.qlgenerator"] pathForResource:@"SPQLPluginContentFiltersTemplate" ofType:@"html"] 
+					encoding:NSUTF8StringEncoding error:&templateReadError];
+
+				if (template == nil || ![template length] || templateReadError != nil) {
+					[pool release];
+					return noErr;
+				}
+				// compose the html
+				html = [[NSMutableString alloc] initWithString:[NSString stringWithFormat:template,
+					[[iconImage TIFFRepresentationUsingCompression:NSTIFFCompressionJPEG factor:0.01] base64EncodingWithLineLength:0],
+					[NSString stringWithContentsOfFile:[myURL path] encoding:NSUTF8StringEncoding error:nil]
+				]];
+			}
+			else if([[spf objectForKey:@"format"] isEqualToString:@"query favorites"]) {
+				template = [NSString stringWithContentsOfFile:[[NSBundle bundleWithIdentifier:@"com.google.code.sequel-pro.qlgenerator"] pathForResource:@"SPQLPluginQueryFavoritesTemplate" ofType:@"html"] 
+					encoding:NSUTF8StringEncoding error:&templateReadError];
+
+				if (template == nil || ![template length] || templateReadError != nil) {
+					[pool release];
+					return noErr;
+				}
+				// compose the html
+				html = [[NSMutableString alloc] initWithString:[NSString stringWithFormat:template,
+					[[iconImage TIFFRepresentationUsingCompression:NSTIFFCompressionJPEG factor:0.01] base64EncodingWithLineLength:0],
+					[NSString stringWithContentsOfFile:[myURL path] encoding:NSUTF8StringEncoding error:nil]
+				]];
+			}
+		}
+		else if([urlExtension isEqualToString:@"sql"]) {
+			template = [NSString stringWithContentsOfFile:[[NSBundle bundleWithIdentifier:@"com.google.code.sequel-pro.qlgenerator"] pathForResource:@"SPQLPluginSQLTemplate" ofType:@"html"] 
+				encoding:NSUTF8StringEncoding error:&templateReadError];
+
+			if (template == nil || ![template length] || templateReadError != nil) {
+				[pool release];
+				return noErr;
+			}
+
+			// compose the html
+			if(fileAttributes)
+			{
+				NSNumber *filesize = [fileAttributes objectForKey:NSFileSize];
+				// catch large files since Finder blocks
+				if([filesize unsignedLongValue] > 6000000) {
+					html = [[NSMutableString alloc] initWithString:[NSString stringWithFormat:template,
+						[[iconImage TIFFRepresentationUsingCompression:NSTIFFCompressionJPEG factor:0.01] base64EncodingWithLineLength:0],
+						[NSString stringForByteSize:[[fileAttributes objectForKey:NSFileSize] longLongValue]],
+						@"... SQL ..."
+					]];
+				} else {
+					html = [[NSMutableString alloc] initWithString:[NSString stringWithFormat:template,
+						[[iconImage TIFFRepresentationUsingCompression:NSTIFFCompressionJPEG factor:0.01] base64EncodingWithLineLength:0],
+						[NSString stringForByteSize:[[fileAttributes objectForKey:NSFileSize] longLongValue]],
+						[NSString stringWithContentsOfFile:[myURL path] encoding:NSUTF8StringEncoding error:nil]
+					]];
+				}
+			} else {
+				html = [[NSMutableString alloc] initWithString:[NSString stringWithFormat:template,
+					[[iconImage TIFFRepresentationUsingCompression:NSTIFFCompressionJPEG factor:0.01] base64EncodingWithLineLength:0],
+					[NSString stringForByteSize:[[fileAttributes objectForKey:NSFileSize] longLongValue]],
+					[NSString stringWithContentsOfFile:[myURL path] encoding:NSUTF8StringEncoding error:nil]
+				]];
+			}
+		}
+
+		CFDictionaryRef properties = (CFDictionaryRef)[NSDictionary dictionary];
+		QLPreviewRequestSetDataRepresentation(preview,
+											  (CFDataRef)[html dataUsingEncoding:NSUTF8StringEncoding],
+											  kUTTypeHTML, 
+											  properties
+											  );
+		[html release];
+		
+	}
+	[pool release];
+    return noErr;
+}
+
+void CancelPreviewGeneration(void* thisInterface, QLPreviewRequestRef preview)
+{
+    // implement only if supported
+}
diff --git a/Source/GenerateThumbnailForURL.m b/Source/GenerateThumbnailForURL.m
new file mode 100644
index 00000000..cee74c74
--- /dev/null
+++ b/Source/GenerateThumbnailForURL.m
@@ -0,0 +1,86 @@
+//  GenerateThumbnailForURL.m
+//  sequel-pro
+//
+//  Created by Hans-Jörg Bibiko on Aug 04, 2010
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation; either version 2 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+//  More info at <http://code.google.com/p/sequel-pro/>
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreServices/CoreServices.h>
+#include <QuickLook/QuickLook.h>
+#import <Cocoa/Cocoa.h>
+
+
+/* -----------------------------------------------------------------------------
+Generate a thumbnail for file
+
+This function's job is to create thumbnail for designated file as fast as possible
+----------------------------------------------------------------------------- */
+
+
+void CancelThumbnailGeneration(void* thisInterface, QLThumbnailRequestRef thumbnail)
+{
+	// implement only if supported
+}
+
+OSStatus GenerateThumbnailForURL(void *thisInterface, QLThumbnailRequestRef thumbnail, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options, CGSize maxSize)
+
+{
+	return noErr;
+
+	// The following code is meant as example maybe fr the future
+	// NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+	// 
+	// NSData *thumbnailData = [NSData dataWithContentsOfFile:@"appicon.icns"];
+	// if ( thumbnailData == nil || [thumbnailData length] == 0 ) {
+	// 	// Nothing Found. Don't care.
+	// 	[pool release];
+	// 	return noErr;
+	// }
+	// 
+	// NSSize canvasSize = NSMakeSize((NSInteger)(maxSize.height/1.3f), maxSize.height);
+	// 
+	// // Thumbnail will be drawn with maximum resolution for desired thumbnail request
+	// // Here we create a graphics context to draw the Quick Look Thumbnail in.
+	// CGContextRef cgContext = QLThumbnailRequestCreateContext(thumbnail, *(CGSize *)&canvasSize, true, NULL);
+	// if(cgContext) {
+	// 	NSGraphicsContext* context = [NSGraphicsContext graphicsContextWithGraphicsPort:(void *)cgContext flipped:YES];
+	// 	if(context) {
+	// 		//These two lines of code are just good safe programming...
+	// 		[NSGraphicsContext saveGraphicsState];
+	// 		[NSGraphicsContext setCurrentContext:context];
+	// 
+	// 		// [context setCompositingOperation:NSCompositeSourceOver];
+	// 		// CGContextSetAlpha(cgContext, 0.5);
+	// 
+	// 		NSBitmapImageRep *thumbnailBitmap = [NSBitmapImageRep imageRepWithData:thumbnailData];
+	// 		[thumbnailBitmap drawInRect:NSMakeRect(10,10,200,200)];
+	// 
+	// 		//This line sets the context back to what it was when we're done
+	// 		[NSGraphicsContext restoreGraphicsState];
+	// 	}
+	// 
+	// 	// When we are done with our drawing code QLThumbnailRequestFlushContext() is called to flush the context
+	// 	QLThumbnailRequestFlushContext(thumbnail, cgContext);
+	// 
+	// 	CFRelease(cgContext);
+	// }
+	// 
+	// [pool release];
+	// return noErr;
+
+}
\ No newline at end of file
diff --git a/Source/main.c b/Source/main.c
new file mode 100644
index 00000000..ae199979
--- /dev/null
+++ b/Source/main.c
@@ -0,0 +1,218 @@
+//==============================================================================
+//
+//	DO NO MODIFY THE CONTENT OF THIS FILE
+//
+//	This file contains the generic CFPlug-in code necessary for your generator
+//	To complete your generator implement the function in GenerateThumbnailForURL/GeneratePreviewForURL.c
+//
+//==============================================================================
+
+
+
+
+
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <CoreFoundation/CFPlugInCOM.h>
+#include <CoreServices/CoreServices.h>
+#include <QuickLook/QuickLook.h>
+
+// -----------------------------------------------------------------------------
+//	constants
+// -----------------------------------------------------------------------------
+
+// Don't modify this line
+#define PLUGIN_ID "15621E48-2969-4291-807E-5F0498A9FB70"
+
+//
+// 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 thumbnail generation function to be implemented in GenerateThumbnailForURL.c
+OSStatus GenerateThumbnailForURL(void *thisInterface, QLThumbnailRequestRef thumbnail, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options, CGSize maxSize);
+void CancelThumbnailGeneration(void* thisInterface, QLThumbnailRequestRef thumbnail);
+
+// The preview generation function to be implemented in GeneratePreviewForURL.c
+OSStatus GeneratePreviewForURL(void *thisInterface, QLPreviewRequestRef preview, CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options);
+void CancelPreviewGeneration(void *thisInterface, QLPreviewRequestRef preview);
+
+// The layout for an instance of QuickLookGeneratorPlugIn
+typedef struct __QuickLookGeneratorPluginType
+{
+    void        *conduitInterface;
+    CFUUIDRef    factoryID;
+    UInt32       refCount;
+} QuickLookGeneratorPluginType;
+
+// -----------------------------------------------------------------------------
+//	prototypes
+// -----------------------------------------------------------------------------
+//	Forward declaration for the IUnknown implementation.
+//
+
+QuickLookGeneratorPluginType  *AllocQuickLookGeneratorPluginType(CFUUIDRef inFactoryID);
+void                         DeallocQuickLookGeneratorPluginType(QuickLookGeneratorPluginType *thisInstance);
+HRESULT                      QuickLookGeneratorQueryInterface(void *thisInstance,REFIID iid,LPVOID *ppv);
+void                        *QuickLookGeneratorPluginFactory(CFAllocatorRef allocator,CFUUIDRef typeID);
+ULONG                        QuickLookGeneratorPluginAddRef(void *thisInstance);
+ULONG                        QuickLookGeneratorPluginRelease(void *thisInstance);
+
+// -----------------------------------------------------------------------------
+//	myInterfaceFtbl	definition
+// -----------------------------------------------------------------------------
+//	The QLGeneratorInterfaceStruct function table.
+//
+static QLGeneratorInterfaceStruct myInterfaceFtbl = {
+    NULL,
+    QuickLookGeneratorQueryInterface,
+    QuickLookGeneratorPluginAddRef,
+    QuickLookGeneratorPluginRelease,
+    NULL,
+    NULL,
+    NULL,
+    NULL
+};
+
+
+// -----------------------------------------------------------------------------
+//	AllocQuickLookGeneratorPluginType
+// -----------------------------------------------------------------------------
+//	Utility function that allocates a new instance.
+//      You can do some initial setup for the generator here if you wish
+//      like allocating globals etc...
+//
+QuickLookGeneratorPluginType *AllocQuickLookGeneratorPluginType(CFUUIDRef inFactoryID)
+{
+    QuickLookGeneratorPluginType *theNewInstance;
+
+    theNewInstance = (QuickLookGeneratorPluginType *)malloc(sizeof(QuickLookGeneratorPluginType));
+    memset(theNewInstance,0,sizeof(QuickLookGeneratorPluginType));
+
+        /* Point to the function table Malloc enough to store the stuff and copy the filler from myInterfaceFtbl over */
+    theNewInstance->conduitInterface = malloc(sizeof(QLGeneratorInterfaceStruct));
+    memcpy(theNewInstance->conduitInterface,&myInterfaceFtbl,sizeof(QLGeneratorInterfaceStruct));
+
+        /*  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;
+}
+
+// -----------------------------------------------------------------------------
+//	DeallocQuickLookGeneratorPluginType
+// -----------------------------------------------------------------------------
+//	Utility function that deallocates the instance when
+//	the refCount goes to zero.
+//      In the current implementation generator interfaces are never deallocated
+//      but implement this as this might change in the future
+//
+void DeallocQuickLookGeneratorPluginType(QuickLookGeneratorPluginType *thisInstance)
+{
+    CFUUIDRef theFactoryID;
+
+    theFactoryID = thisInstance->factoryID;
+        /* Free the conduitInterface table up */
+    free(thisInstance->conduitInterface);
+
+        /* Free the instance structure */
+    free(thisInstance);
+    if (theFactoryID){
+        CFPlugInRemoveInstanceForFactory(theFactoryID);
+        CFRelease(theFactoryID);
+    }
+}
+
+// -----------------------------------------------------------------------------
+//	QuickLookGeneratorQueryInterface
+// -----------------------------------------------------------------------------
+//	Implementation of the IUnknown QueryInterface function.
+//
+HRESULT QuickLookGeneratorQueryInterface(void *thisInstance,REFIID iid,LPVOID *ppv)
+{
+    CFUUIDRef interfaceID;
+
+    interfaceID = CFUUIDCreateFromUUIDBytes(kCFAllocatorDefault,iid);
+
+    if (CFEqual(interfaceID,kQLGeneratorCallbacksInterfaceID)){
+            /* If the Right interface was requested, bump the ref count,
+             * set the ppv parameter equal to the instance, and
+             * return good status.
+             */
+        ((QLGeneratorInterfaceStruct *)((QuickLookGeneratorPluginType *)thisInstance)->conduitInterface)->GenerateThumbnailForURL = GenerateThumbnailForURL;
+        ((QLGeneratorInterfaceStruct *)((QuickLookGeneratorPluginType *)thisInstance)->conduitInterface)->CancelThumbnailGeneration = CancelThumbnailGeneration;
+        ((QLGeneratorInterfaceStruct *)((QuickLookGeneratorPluginType *)thisInstance)->conduitInterface)->GeneratePreviewForURL = GeneratePreviewForURL;
+        ((QLGeneratorInterfaceStruct *)((QuickLookGeneratorPluginType *)thisInstance)->conduitInterface)->CancelPreviewGeneration = CancelPreviewGeneration;
+        ((QLGeneratorInterfaceStruct *)((QuickLookGeneratorPluginType*)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;
+    }
+}
+
+// -----------------------------------------------------------------------------
+// QuickLookGeneratorPluginAddRef
+// -----------------------------------------------------------------------------
+//	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 QuickLookGeneratorPluginAddRef(void *thisInstance)
+{
+    ((QuickLookGeneratorPluginType *)thisInstance )->refCount += 1;
+    return ((QuickLookGeneratorPluginType*) thisInstance)->refCount;
+}
+
+// -----------------------------------------------------------------------------
+// QuickLookGeneratorPluginRelease
+// -----------------------------------------------------------------------------
+//	When an interface is released, decrement the refCount.
+//	If the refCount goes to zero, deallocate the instance.
+//
+ULONG QuickLookGeneratorPluginRelease(void *thisInstance)
+{
+    ((QuickLookGeneratorPluginType*)thisInstance)->refCount -= 1;
+    if (((QuickLookGeneratorPluginType*)thisInstance)->refCount == 0){
+        DeallocQuickLookGeneratorPluginType((QuickLookGeneratorPluginType*)thisInstance );
+        return 0;
+    }else{
+        return ((QuickLookGeneratorPluginType*) thisInstance )->refCount;
+    }
+}
+
+// -----------------------------------------------------------------------------
+//  QuickLookGeneratorPluginFactory
+// -----------------------------------------------------------------------------
+void *QuickLookGeneratorPluginFactory(CFAllocatorRef allocator,CFUUIDRef typeID)
+{
+    QuickLookGeneratorPluginType *result;
+    CFUUIDRef                 uuid;
+
+        /* If correct type is being requested, allocate an
+         * instance of kQLGeneratorTypeID and return the IUnknown interface.
+         */
+    if (CFEqual(typeID,kQLGeneratorTypeID)){
+        uuid = CFUUIDCreateFromString(kCFAllocatorDefault,CFSTR(PLUGIN_ID));
+        result = AllocQuickLookGeneratorPluginType(uuid);
+        CFRelease(uuid);
+        return result;
+    }
+        /* If the requested type is incorrect, return NULL. */
+    return NULL;
+}
+