add cleanLoomMappings, close #36

src/main/java/net/fabricmc/loom/LoomGradlePlugin.java

@@ -33,6 +33,7 @@ public class LoomGradlePlugin extends AbstractPlugin {
 		super.apply(target);
 
 		makeTask("cleanLoomBinaries", CleanLoomBinaries.class);
+		makeTask("cleanLoomMappings", CleanLoomMappings.class);
 
 		makeTask("remapJar", RemapJar.class);
 

src/main/java/net/fabricmc/loom/task/CleanLoomMappings.java

@@ -0,0 +1,51 @@
+/*
+ * This file is part of fabric-loom, licensed under the MIT License (MIT).
+ *
+ * Copyright (c) 2016, 2017, 2018 FabricMC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package net.fabricmc.loom.task;
+
+import net.fabricmc.loom.LoomGradleExtension;
+import net.fabricmc.loom.util.DeletingFileVisitor;
+import org.gradle.api.DefaultTask;
+import org.gradle.api.Project;
+import org.gradle.api.tasks.TaskAction;
+
+import java.io.IOException;
+import java.nio.file.Files;
+
+public class CleanLoomMappings extends DefaultTask {
+    @TaskAction
+    public void run() {
+        Project project = this.getProject();
+        LoomGradleExtension extension = project.getExtensions().getByType(LoomGradleExtension.class);
+        extension.getMappingsProvider().MAPPINGS_TINY.delete();
+        extension.getMappingsProvider().MAPPINGS_TINY_BASE.delete();
+        extension.getMinecraftMappedProvider().getIntermediaryJar().delete();
+        extension.getMinecraftMappedProvider().getMappedJar().delete();
+        try {
+            Files.walkFileTree(extension.getProjectCache().toPath(), new DeletingFileVisitor());
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

src/main/java/net/fabricmc/loom/util/DeletingFileVisitor.java

@@ -0,0 +1,46 @@
+/*
+ * This file is part of fabric-loom, licensed under the MIT License (MIT).
+ *
+ * Copyright (c) 2016, 2017, 2018 FabricMC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package net.fabricmc.loom.util;
+
+import java.io.IOException;
+import java.nio.file.FileVisitResult;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.SimpleFileVisitor;
+import java.nio.file.attribute.BasicFileAttributes;
+
+public class DeletingFileVisitor extends SimpleFileVisitor<Path> {
+	@Override
+	public FileVisitResult visitFile(Path path, BasicFileAttributes basicFileAttributes) throws IOException {
+		Files.delete(path);
+		return FileVisitResult.CONTINUE;
+	}
+
+	@Override
+	public FileVisitResult postVisitDirectory(Path path, IOException e) throws IOException {
+		Files.delete(path);
+		return FileVisitResult.CONTINUE;
+	}
+}

src/main/java/net/fabricmc/loom/util/SourceRemapper.java

@@ -125,19 +125,7 @@ public class SourceRemapper {
 		}
 
 		if (isSrcTmp) {
-			Files.walkFileTree(srcPath, new SimpleFileVisitor<Path>() {
-				@Override
-				public FileVisitResult visitFile(Path path, BasicFileAttributes basicFileAttributes) throws IOException {
-					Files.delete(path);
-					return FileVisitResult.CONTINUE;
-				}
-
-				@Override
-				public FileVisitResult postVisitDirectory(Path path, IOException e) throws IOException {
-					Files.delete(path);
-					return FileVisitResult.CONTINUE;
-				}
-			});
+			Files.walkFileTree(srcPath, new DeletingFileVisitor());
 		}
 	}