unique a ballooned whitelist if there are lots of duplicate entries; …

…this seems to be pretty fast, since it basically just loads the array from prefs into a set and then writes the set back out again; on a 1.5 MB prefs file with 77673 items, on a MacBook Core 2 Duo 2 GHz, it takes only a second or two

(cherry picked from commit fa4536e)

Plugin/CTFWhitelist.m

@@ -43,27 +43,18 @@ of this software and associated documentation files (the "Software"), to deal
     CTFSiteKindWhitelist = 0
 } CTGSiteKind;
 
-
-static NSUInteger indexOfItemForSite( NSArray* arr, NSString* site )
+static NSDictionary* itemForSite( NSSet* set, NSString* site )
 {
+	NSDictionary *specificWhitelistItem = nil;
+
     int i = 0;
-    CTFForEachObject( NSDictionary, item, arr ) {
+    CTFForEachObject( NSDictionary, item, set ) {
         if( [ [ item objectForKey: @"site" ] isEqualToString: site ] )
-            return i;
+            specificWhitelistItem = item;
         ++i;
     }
 
-    return NSNotFound;
-}
-
-static NSDictionary* itemForSite( NSArray* arr, NSString* site )
-{
-    NSUInteger index = indexOfItemForSite( arr, site );
-
-    if( index != NSNotFound )
-        return [ arr objectAtIndex: index ];
-
-	return nil;
+	return specificWhitelistItem;
 }
 
 static NSDictionary* whitelistItemForSite( NSString* site )
@@ -166,25 +157,31 @@ - (BOOL) _isHostWhitelisted
 
 - (BOOL) _isWhiteListedForHostString:(NSString *)hostString
 {
-	NSArray *hostWhitelist = [[CTFUserDefaultsController standardUserDefaults] arrayForKey: sHostSiteInfoDefaultsKey];
-    return hostWhitelist && itemForSite(hostWhitelist, hostString) != nil;
+	NSArray *hostWhitelistArray = [[CTFUserDefaultsController standardUserDefaults] arrayForKey: sHostSiteInfoDefaultsKey];
+	NSSet *hostWhitelistSet = [NSSet setWithArray:hostWhitelistArray];
+    return hostWhitelistArray && itemForSite(hostWhitelistSet, hostString) != nil;
 }
 
-- (NSMutableArray *) _mutableSiteInfo
+- (NSMutableSet *) _mutableSiteInfo
 {
-    NSMutableArray *hostWhitelist = [[[[CTFUserDefaultsController standardUserDefaults] arrayForKey: sHostSiteInfoDefaultsKey] mutableCopy] autorelease];
-    if (hostWhitelist == nil) {
-        hostWhitelist = [NSMutableArray array];
-    }
+    NSMutableArray *hostWhitelistArray = [[[[CTFUserDefaultsController standardUserDefaults] arrayForKey: sHostSiteInfoDefaultsKey] mutableCopy] autorelease];
+
+	NSMutableSet *hostWhitelist;
+    if (hostWhitelistArray == nil) {
+        hostWhitelist = [NSMutableSet setWithCapacity:0];
+    } else {
+		hostWhitelist = [NSMutableSet setWithArray:hostWhitelistArray];
+	}
+
     return hostWhitelist;
 }
 
 - (void) _addHostToWhitelist
 {
-    NSMutableArray *siteInfo = [self _mutableSiteInfo];
+    NSMutableSet *siteInfo = [self _mutableSiteInfo];
     [siteInfo addObject: whitelistItemForSite([self host])];
 
-	[[CTFUserDefaultsController standardUserDefaults] setValue:siteInfo forKeyPath:@"values.siteInfo"];
+	[[CTFUserDefaultsController standardUserDefaults] setValue:[siteInfo allObjects] forKeyPath:@"values.siteInfo"];
 
     [[NSNotificationCenter defaultCenter] postNotificationName: sCTFWhitelistAdditionMade object: self];
 }

Plugin/Plugin.h

@@ -65,6 +65,7 @@ THE SOFTWARE.
 
 - (id) initWithArguments:(NSDictionary *)arguments;
 - (void)_migratePrefsToExternalFile;
+- (void)_uniquePrefsFileWhitelist;
 - (void) _addApplicationWhitelistArrayToPrefsFile;
 
 - (DOMElement *)container;

Plugin/Plugin.m

@@ -155,6 +155,7 @@ - (id) initWithArguments:(NSDictionary *)arguments
 
         [self _migrateWhitelist];
 		[self _migratePrefsToExternalFile];
+		[self _uniquePrefsFileWhitelist];
 		[self _addApplicationWhitelistArrayToPrefsFile];
 
 
@@ -521,6 +522,15 @@ - (void) _migratePrefsToExternalFile
 	[[NSUserDefaults standardUserDefaults] removeSuiteNamed:@"com.github.rentzsch.clicktoflash"];
 }
 
+- (void) _uniquePrefsFileWhitelist
+{
+	NSArray *siteInfoArray = [[CTFUserDefaultsController standardUserDefaults] arrayForKey:@"siteInfo"];
+	NSSet *siteInfoSet = [NSSet setWithArray:siteInfoArray];
+
+	[[CTFUserDefaultsController standardUserDefaults] setValue:[siteInfoSet allObjects] forKeyPath:@"values.siteInfo"];
+}
+
+
 - (void) _addApplicationWhitelistArrayToPrefsFile
 {
 	CTFUserDefaultsController *standardUserDefaults = [CTFUserDefaultsController standardUserDefaults];