corrected use of -description in tile cache, and added parameterization of CloudMade tiles

@@ -92,5 +92,10 @@
 {
 }
 
+-(NSString *)uniqueTilecacheKey
+{
+	@throw [NSException exceptionWithName:@"RMAbstractMethodInvocation" reason:@"uniqueTilecacheKey invoked on AbstractMercatorWebSource. Override this method when instantiating abstract class." userInfo:nil];
+}
+
 @end
 

@@ -31,9 +31,13 @@
 
 @interface RMCloudMadeMapSource : RMAbstractMercatorWebSource <RMAbstractMercatorWebSource>
 {
-
+	NSUInteger cloudmadeStyleNumber;
 }
 
-+(int)tileSideLength;
+/// designated initializer
+- (id) initWithStyleNumber:(NSUInteger)styleNumber;
+
++ (int)tileSideLength;
+- (id)initWithStyleNumber:(NSUInteger)theCloudmadeStyleNumber;
 
 @end

@@ -31,17 +31,39 @@
 
 @implementation RMCloudMadeMapSource
 
--(NSString*) tileURL: (RMTile) tile
+#define kDefaultCloudMadeStyleNumber 7
+
+- (id) init
+{
+	return [self initWithStyleNumber:kDefaultCloudMadeStyleNumber];
+}
+
+/// designated initializer
+- (id) initWithStyleNumber:(NSUInteger)styleNumber
+{
+	NSAssert((styleNumber > 0), @"CloudMade style number must be positive");
+	if (self = [super init]) {
+		if (styleNumber > 0)
+			cloudmadeStyleNumber = styleNumber;
+		else
+			cloudmadeStyleNumber = kDefaultCloudMadeStyleNumber;
+	}
+		return self;
+}
+
+- (NSString*) tileURL: (RMTile) tile
 {
 	NSAssert4(((tile.zoom >= self.minZoom) && (tile.zoom <= self.maxZoom)),
 			  @"%@ tried to retrieve tile with zoomLevel %d, outside source's defined range %f to %f", 
 			  self, tile.zoom, self.minZoom, self.maxZoom);
-	return [NSString stringWithFormat:@"http://a.tile.cloudmade.com/0199bdee456e59ce950b0156029d6934/2/%d/%d/%d/%d.png",[RMCloudMadeMapSource tileSideLength], tile.zoom, tile.x, tile.y];
+	return [NSString stringWithFormat:@"http://tile.cloudmade.com/0199bdee456e59ce950b0156029d6934/%d/%d/%d/%d/%d.png",
+			cloudmadeStyleNumber,
+			[RMCloudMadeMapSource tileSideLength], tile.zoom, tile.x, tile.y];
 }
 
--(NSString*) description
+-(NSString*) uniqueTilecacheKey
 {
-	return @"CloudMadeMaps";
+	return [NSString stringWithFormat:@"CloudMadeMaps%d", cloudmadeStyleNumber];
 }
 
 +(int)tileSideLength

@@ -116,11 +116,6 @@
 	[[image layer] removeFromSuperlayer];
 }
 
--(NSString*) description
-{
-	return @"CoreAnimation map renderer";
-}
-
 - (void)setFrame:(CGRect)frame
 {
 	layer.frame = [content screenBounds];

@@ -46,7 +46,7 @@
 	
 	if ([paths count] > 0) // Should only be one...
 	{
-		NSString *filename = [NSString stringWithFormat:@"Map%@.sqlite", [source description]];
+		NSString *filename = [NSString stringWithFormat:@"Map%@.sqlite", [source uniqueTilecacheKey]];
 		
 		return [[paths objectAtIndex:0] stringByAppendingPathComponent:filename];
 	}

@@ -37,7 +37,7 @@
 	return [NSString stringWithFormat:@"http://tile.openaerialmap.org/tiles/1.0.0/openaerialmap-900913/%d/%d/%d.png", tile.zoom, tile.x, tile.y];
 }
 
--(NSString*) description
+-(NSString*) uniqueTilecacheKey
 {
 	return @"OpenAerialMap";
 }

@@ -37,9 +37,9 @@
 	return [NSString stringWithFormat:@"http://tile.openstreetmap.org/%d/%d/%d.png", tile.zoom, tile.x, tile.y];
 }
 
--(NSString*) description
+-(NSString*) uniqueTilecacheKey
 {
-	return @"OpenStreetMaps";
+	return @"OpenStreetMap";
 }
 
 @end

@@ -48,4 +48,6 @@
 
 -(void) didReceiveMemoryWarning;
 
+-(NSString *)uniqueTilecacheKey;
+
 @end

@@ -73,9 +73,9 @@
 	return [NSString stringWithFormat:@"http://%@%d.ortho.tiles.virtualearth.net/tiles/%@%@%@?g=15", mapType, 3, mapType, quadKey, mapExtension];
 }
 
--(NSString*) description
+-(NSString*) uniqueTilecacheKey
 {
-	return @"Microsoft VirtualEarth";
+	return @"MicrosoftVirtualEarth";
 }
 
 @end

@@ -691,9 +691,7 @@
 				GCC_ENABLE_FIX_AND_CONTINUE = NO;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = MapView_Prefix.pch;
-				GCC_PREPROCESSOR_DEFINITIONS = (
-					"NS_BLOCK_ASSERTIONS=1",
-				);
+				GCC_PREPROCESSOR_DEFINITIONS = "NS_BLOCK_ASSERTIONS=1";
 				HEADER_SEARCH_PATHS = ../Proj4;
 				PREBINDING = NO;
 				PRODUCT_NAME = MapView;