Migrate bazel/src/tools/android/java/com/google/devtools/build/androi…

…d to rules_android

PiperOrigin-RevId: 681554358
Change-Id: I587fcaa8ca362a5ccd4f6f73d8056776eaab3efa

src/tools/java/com/google/devtools/build/android/Aapt2OptimizeAction.java

@@ -0,0 +1,72 @@
+// Copyright 2019 The Bazel Authors. All rights reserved.
+//
+// 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 com.google.devtools.build.android;
+
+import com.beust.jcommander.JCommander;
+import com.beust.jcommander.ParameterException;
+import com.beust.jcommander.Parameters;
+import com.beust.jcommander.ParametersDelegate;
+import com.google.common.collect.ImmutableList;
+import com.google.devtools.build.android.aapt2.Aapt2ConfigOptions;
+import java.util.List;
+import java.util.logging.Logger;
+
+/**
+ * A {@link ResourceProcessorBusyBox} action which executes {@code aapt2 optimize}, passing through
+ * raw arguments.
+ */
+class Aapt2OptimizeAction {
+  private static final Logger logger = Logger.getLogger(Aapt2OptimizeAction.class.getName());
+
+  public static void main(String... args) throws Exception {
+    logger.fine(CommandHelper.execute("Optimizing resources", buildCommand(args)));
+  }
+
+  @Parameters(separators = "= ")
+  static class Options extends OptionsBaseWithResidue {
+    // NOTE: This options class needs the ParametersDelegate feature from JCommander for several
+    // reasons:
+    // * There are no Aapt2OptimizeAction-specific options, just fake "inheritance" from
+    //   Aapt2ConfigOptions and ResourceProcessorCommonOptions.
+    // * The action itself reads the residue from the command line
+    // In JCommander, residue collection is done at a per-option-class basis, not per OptionsParser,
+    // as was the case with the Bazel OptionsParser. Simultaneously, only _one_ object in a list of
+    // Objects passed to JCommander can have residue collection.
+    // Therefore, the most straightforward option here is to "inherit" the sub-option classes into a
+    // super Options class, with residue collection enabled for Options.
+
+    @ParametersDelegate public Aapt2ConfigOptions aapt2ConfigOptions = new Aapt2ConfigOptions();
+
+    @ParametersDelegate
+    public ResourceProcessorCommonOptions resourceProcessorCommonOptions =
+        new ResourceProcessorCommonOptions();
+  }
+
+  private static List<String> buildCommand(String... args) throws ParameterException {
+    Options options = new Options();
+    JCommander jc = new JCommander(options);
+    String[] preprocessedArgs = AndroidOptionsUtils.runArgFilePreprocessor(jc, args);
+    String[] normalizedArgs =
+        AndroidOptionsUtils.normalizeBooleanOptions(options, preprocessedArgs);
+    jc.parse(normalizedArgs);
+
+    return ImmutableList.<String>builder()
+        .add(options.aapt2ConfigOptions.aapt2.toString())
+        .add("optimize")
+        .addAll(options.getResidue())
+        .build();
+  }
+
+  private Aapt2OptimizeAction() {}
+}