Update #48 - Added some features from OptiFine

sources/main/java/net/optifine/config/Matches.java

@@ -0,0 +1,97 @@
+package net.optifine.config;
+
+import net.lax1dude.eaglercraft.v1_8.minecraft.EaglerTextureAtlasSprite;
+import net.minecraft.block.state.BlockStateBase;
+import net.minecraft.world.biome.BiomeGenBase;
+
+public class Matches {
+	public static boolean block(BlockStateBase blockStateBase, MatchBlock[] matchBlocks) {
+		if (matchBlocks == null) {
+			return true;
+		} else {
+			for (int i = 0; i < matchBlocks.length; ++i) {
+				MatchBlock matchblock = matchBlocks[i];
+
+				if (matchblock.matches(blockStateBase)) {
+					return true;
+				}
+			}
+
+			return false;
+		}
+	}
+
+	public static boolean block(int blockId, int metadata, MatchBlock[] matchBlocks) {
+		if (matchBlocks == null) {
+			return true;
+		} else {
+			for (int i = 0; i < matchBlocks.length; ++i) {
+				MatchBlock matchblock = matchBlocks[i];
+
+				if (matchblock.matches(blockId, metadata)) {
+					return true;
+				}
+			}
+
+			return false;
+		}
+	}
+
+	public static boolean blockId(int blockId, MatchBlock[] matchBlocks) {
+		if (matchBlocks == null) {
+			return true;
+		} else {
+			for (int i = 0; i < matchBlocks.length; ++i) {
+				MatchBlock matchblock = matchBlocks[i];
+
+				if (matchblock.getBlockId() == blockId) {
+					return true;
+				}
+			}
+
+			return false;
+		}
+	}
+
+	public static boolean metadata(int metadata, int[] metadatas) {
+		if (metadatas == null) {
+			return true;
+		} else {
+			for (int i = 0; i < metadatas.length; ++i) {
+				if (metadatas[i] == metadata) {
+					return true;
+				}
+			}
+
+			return false;
+		}
+	}
+
+	public static boolean sprite(EaglerTextureAtlasSprite sprite, EaglerTextureAtlasSprite[] sprites) {
+		if (sprites == null) {
+			return true;
+		} else {
+			for (int i = 0; i < sprites.length; ++i) {
+				if (sprites[i] == sprite) {
+					return true;
+				}
+			}
+
+			return false;
+		}
+	}
+
+	public static boolean biome(BiomeGenBase biome, BiomeGenBase[] biomes) {
+		if (biomes == null) {
+			return true;
+		} else {
+			for (int i = 0; i < biomes.length; ++i) {
+				if (biomes[i] == biome) {
+					return true;
+				}
+			}
+
+			return false;
+		}
+	}
+}