| // Copyright 2014 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.lib.query2.query.output; |
| |
| import com.google.common.collect.Sets; |
| import com.google.devtools.build.lib.packages.Target; |
| import com.google.devtools.build.lib.query2.engine.OutputFormatterCallback; |
| import com.google.devtools.build.lib.query2.engine.QueryEnvironment; |
| import com.google.devtools.build.lib.query2.engine.SynchronizedDelegatingOutputFormatterCallback; |
| import com.google.devtools.build.lib.query2.engine.ThreadSafeOutputFormatterCallback; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.Set; |
| |
| /** |
| * An output formatter that prints the names of the packages of the target |
| * set, in lexicographical order without duplicates. |
| */ |
| class PackageOutputFormatter extends AbstractUnorderedFormatter { |
| |
| @Override |
| public String getName() { |
| return "package"; |
| } |
| |
| @Override |
| public OutputFormatterCallback<Target> createPostFactoStreamCallback( |
| OutputStream out, final QueryOptions options) { |
| return new TextOutputFormatterCallback<Target>(out) { |
| private final Set<String> packageNames = Sets.newTreeSet(); |
| |
| @Override |
| public void processOutput(Iterable<Target> partialResult) { |
| |
| for (Target target : partialResult) { |
| packageNames.add(target.getLabel().getPackageIdentifier().toString()); |
| } |
| } |
| |
| @Override |
| public void close(boolean failFast) throws IOException { |
| if (!failFast) { |
| final String lineTerm = options.getLineTerminator(); |
| for (String packageName : packageNames) { |
| writer.append(packageName).append(lineTerm); |
| } |
| } |
| super.close(failFast); |
| } |
| }; |
| } |
| |
| @Override |
| public ThreadSafeOutputFormatterCallback<Target> createStreamCallback( |
| OutputStream out, QueryOptions options, QueryEnvironment<?> env) { |
| return new SynchronizedDelegatingOutputFormatterCallback<>( |
| createPostFactoStreamCallback(out, options)); |
| } |
| } |