1 files changed, 111 insertions, 0 deletions
diff --git a/plugins/gradle/jps-plugin/src/org/jetbrains/jps/gradle/compiler/ChainingFilterTransformer.java b/plugins/gradle/jps-plugin/src/org/jetbrains/jps/gradle/compiler/ChainingFilterTransformer.java
new file mode 100644
index 000000000000..c717fe16c792
--- /dev/null
+++ b/plugins/gradle/jps-plugin/src/org/jetbrains/jps/gradle/compiler/ChainingFilterTransformer.java
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2000-2014 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jetbrains.jps.gradle.compiler;
+
+import com.intellij.openapi.util.Ref;
+import org.gradle.api.Transformer;
+import org.gradle.util.ConfigureUtil;
+import org.jetbrains.jps.gradle.model.impl.ResourceRootFilter;
+import org.jetbrains.jps.incremental.CompileContext;
+import org.jetbrains.jps.incremental.messages.BuildMessage;
+import org.jetbrains.jps.incremental.messages.CompilerMessage;
+
+import java.io.File;
+import java.io.FilterReader;
+import java.io.Reader;
+import java.lang.reflect.Constructor;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Map;
+import java.util.regex.Matcher;
+
+/**
+ * @author Vladislav.Soroka
+ * @since 7/24/2014
+ */
+public class ChainingFilterTransformer implements Transformer<Reader, Reader> {
+  private final Collection<ResourceRootFilter> myFilters = new ArrayList<ResourceRootFilter>();
+  private final CompileContext myContext;
+  private final Ref<File> myOutputFileRef;
+
+
+  public ChainingFilterTransformer(CompileContext context, Collection<ResourceRootFilter> filters, Ref<File> outputFileRef) {
+    myContext = context;
+    myOutputFileRef = outputFileRef;
+    myFilters.addAll(filters);
+  }
+
+  public ChainingFilterTransformer(CompileContext context, Collection<ResourceRootFilter> filters) {
+    this(context, filters, null);
+  }
+
+  public void addAll(Collection<ResourceRootFilter> filters) {
+    myFilters.addAll(filters);
+  }
+
+  public void add(ResourceRootFilter... filters) {
+    Collections.addAll(myFilters, filters);
+  }
+
+  @Override
+  public Reader transform(Reader original) {
+    Reader value = original;
+    for (ResourceRootFilter filter : myFilters) {
+      value = doTransform(filter, value);
+    }
+    return value;
+  }
+
+  private Reader doTransform(ResourceRootFilter filter, Reader original) {
+    if ("RenamingCopyFilter" .equals(filter.filterType)) {
+      final Matcher matcher = (Matcher)filter.getProperties().get("matcher");
+      final String replacement = (String)filter.getProperties().get("replacement");
+      if (matcher == null || replacement == null) return original;
+
+      matcher.reset(myOutputFileRef.get().getName());
+      if (matcher.find()) {
+        final String newFileName = matcher.replaceFirst(replacement);
+        myOutputFileRef.set(new File(myOutputFileRef.get().getParentFile(), newFileName));
+      }
+      return original;
+    }
+    try {
+      Class<?> clazz = Class.forName(filter.filterType);
+      if (!FilterReader.class.isAssignableFrom(clazz)) {
+        myContext.processMessage(
+          new CompilerMessage(
+            GradleResourcesBuilder.BUILDER_NAME, BuildMessage.Kind.WARNING,
+            String.format("Error - Invalid filter specification for %s. It should extend java.io.FilterReader.", filter.filterType), null)
+        );
+      }
+      Constructor constructor = clazz.getConstructor(Reader.class);
+      FilterReader result = (FilterReader)constructor.newInstance(original);
+      final Map<Object, Object> properties = filter.getProperties();
+      if (!properties.isEmpty()) {
+        ConfigureUtil.configureByMap(properties, result);
+      }
+      return result;
+    }
+    catch (Throwable th) {
+      myContext.processMessage(new CompilerMessage(
+                                 GradleResourcesBuilder.BUILDER_NAME, BuildMessage.Kind.WARNING,
+                                 String.format("Error - Failed to apply filter(%s): %s", filter.filterType, th.getMessage()), null)
+      );
+    }
+    return original;
+  }
+}