store only biome IDs not instances

reorganized utility methods

src/main/java/mods/betterfoliage/common/util/ResourceUtils.java

@@ -0,0 +1,72 @@
+package mods.betterfoliage.common.util;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.Map;
+
+import mods.betterfoliage.loader.DeobfHelper;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.resources.IResource;
+import net.minecraft.client.resources.IResourceManager;
+import net.minecraft.client.resources.SimpleReloadableResourceManager;
+import net.minecraft.util.ResourceLocation;
+
+import com.google.common.base.Charsets;
+
+import cpw.mods.fml.relauncher.ReflectionHelper;
+import cpw.mods.fml.relauncher.ReflectionHelper.UnableToAccessFieldException;
+
+public class ResourceUtils {
+
+	/** Hide constructor */
+	private ResourceUtils() {}
+	
+	/** 
+	 * @return (({@link SimpleReloadableResourceManager}) Minecraft.getMinecraft().getResourceManager()).domainResourceManagers
+	 */
+	public static Map<String, IResourceManager> getDomainResourceManagers() {
+        try {
+            return ReflectionHelper.<Map<String, IResourceManager>, SimpleReloadableResourceManager> getPrivateValue(
+                SimpleReloadableResourceManager.class, (SimpleReloadableResourceManager) Minecraft.getMinecraft().getResourceManager(), DeobfHelper.transformElementSearge("domainResourceManagers"), "domainResourceManagers"
+            );
+        } catch (UnableToAccessFieldException e) {
+            return null;
+        }
+	}
+	
+	/** Check for the existence of a {@link IResource}
+	 * @param resourceLocation
+	 * @return true if the resource exists
+	 */
+	public static boolean resourceExists(ResourceLocation resourceLocation) {
+		try {
+			IResource resource = Minecraft.getMinecraft().getResourceManager().getResource(resourceLocation);
+			if (resource != null) return true;
+		} catch (IOException e) {
+		}
+		return false;
+	}
+	
+	/** Copy a text file from a resource to the filesystem 
+	 * @param resourceLocation resource location of text file
+	 * @param target target file
+	 * @throws IOException 
+	 */
+	public static void copyFromTextResource(ResourceLocation resourceLocation, File target) throws IOException {
+		IResource defaults = Minecraft.getMinecraft().getResourceManager().getResource(resourceLocation);
+		BufferedReader reader = new BufferedReader(new InputStreamReader(defaults.getInputStream(), Charsets.UTF_8));
+		FileWriter writer = new FileWriter(target);
+		
+		String line = reader.readLine();
+		while(line != null) {
+			writer.write(line + System.lineSeparator());
+			line = reader.readLine();
+		}
+		
+		reader.close();
+		writer.close();
+	}
+}