Convert to ARC.

Use alloc-init instead of convenience class functions: They're not autoreleased, meaning less stress on the autorelease pools.

Author: MaddTheSane

GeneratePreviewForURL.m

@@ -12,14 +12,16 @@ OSStatus GeneratePreviewForURL(void *thisInterface, QLPreviewRequestRef preview,
 							   CFURLRef url, CFStringRef contentTypeUTI, 
 							   CFDictionaryRef options)
 {
-    CFDataRef data = (CFDataRef) renderMarkdown((NSURL*) url);
+    @autoreleasepool {
+    NSData *data = renderMarkdown((__bridge NSURL*) url);
 
     if (data) {
-		CFDictionaryRef props = (CFDictionaryRef) [NSDictionary dictionary];
-        QLPreviewRequestSetDataRepresentation(preview, data, kUTTypeHTML, props);
+		NSDictionary *props = [[NSDictionary alloc] init];
+        QLPreviewRequestSetDataRepresentation(preview, (__bridge CFDataRef)data, kUTTypeHTML, (__bridge CFDictionaryRef)props);
     }
 
     return noErr;
+    }
 }
 
 void CancelPreviewGeneration(void* thisInterface, QLPreviewRequestRef preview)

GenerateThumbnailForURL.m

@@ -19,7 +19,8 @@ OSStatus GenerateThumbnailForURL(void *thisInterface,
 								 CFURLRef url, CFStringRef contentTypeUTI, 
 								 CFDictionaryRef options, CGSize maxSize)
 {
-    NSData *data = renderMarkdown((NSURL*) url);
+    @autoreleasepool {
+    NSData *data = renderMarkdown((__bridge NSURL*) url);
 
     if (data) {
 		NSRect viewRect = NSMakeRect(0.0, 0.0, 600.0, 800.0);
@@ -29,7 +30,7 @@ OSStatus GenerateThumbnailForURL(void *thisInterface,
                             NSMakeSize((maxSize.width * (600.0/800.0)), 
                                        maxSize.height));
 
-        WebView* webView = [[[WebView alloc] initWithFrame: viewRect] autorelease];
+        WebView* webView = [[WebView alloc] initWithFrame: viewRect];
 		[webView scaleUnitSquareToSize: scaleSize];
         [[[webView mainFrame] frameView] setAllowsScrolling:NO];
         [[webView mainFrame] loadData: data
@@ -62,6 +63,7 @@ OSStatus GenerateThumbnailForURL(void *thisInterface,
     }
 
     return noErr;
+    }
 }
 
 void CancelThumbnailGeneration(void* thisInterface, QLThumbnailRequestRef thumbnail)

QLMarkdown.xcodeproj/project.pbxproj

@@ -334,6 +334,7 @@
 		2CA3261F0896AD4900168862 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				CLANG_ENABLE_OBJC_ARC = YES;
 				COMBINE_HIDPI_IMAGES = YES;
 				COPY_PHASE_STRIP = NO;
 				GCC_DYNAMIC_NO_PIC = NO;
@@ -349,6 +350,7 @@
 		2CA326200896AD4900168862 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				CLANG_ENABLE_OBJC_ARC = YES;
 				COMBINE_HIDPI_IMAGES = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;

markdown.m

@@ -3,15 +3,16 @@
 
 NSData* renderMarkdown(NSURL* url)
 {
-    NSString *styles = [NSString stringWithContentsOfFile:[[NSBundle bundleWithIdentifier: @"com.fiatdev.QLMarkdown"]
+    @autoreleasepool {
+    NSString *styles = [[NSString alloc] initWithContentsOfFile:[[NSBundle bundleWithIdentifier: @"com.fiatdev.QLMarkdown"]
                                                            pathForResource:@"styles" ofType:@"css"]
                                                  encoding:NSUTF8StringEncoding
                                                     error:nil];
 
     NSStringEncoding usedEncoding = 0;
     NSError *e = nil;
 
-    NSString *source = [NSString stringWithContentsOfURL:url usedEncoding:&usedEncoding error:&e];
+    NSString *source = [[NSString alloc] initWithContentsOfURL:url usedEncoding:&usedEncoding error:&e];
 
     if (usedEncoding == 0) {
         NSLog(@"Wasn't able to determine encoding for file “%@”", [url path]);
@@ -27,4 +28,5 @@
 
     free(output);
     return [html dataUsingEncoding:NSUTF8StringEncoding];
+    }
 }