| /* |
| * Copyright 2012-present Facebook, Inc. |
| * |
| * 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.facebook.buck.cli; |
| |
| import com.facebook.buck.model.BuildFileTree; |
| import com.facebook.buck.model.BuildTarget; |
| import com.facebook.buck.parser.BuildTargetParser; |
| import com.facebook.buck.parser.NoSuchBuildTargetException; |
| import com.facebook.buck.parser.ParseContext; |
| import com.facebook.buck.parser.Parser; |
| import com.facebook.buck.rules.ArtifactCache; |
| import com.facebook.buck.util.Ansi; |
| import com.facebook.buck.util.ProjectFilesystem; |
| import com.google.common.base.Preconditions; |
| import com.google.common.collect.ImmutableList; |
| |
| import org.kohsuke.args4j.CmdLineException; |
| import org.kohsuke.args4j.CmdLineParser; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.PrintStream; |
| import java.util.List; |
| |
| abstract class AbstractCommandRunner<T extends AbstractCommandOptions> implements CommandRunner { |
| |
| protected final PrintStream stdOut; |
| protected final PrintStream stdErr; |
| protected final Ansi ansi; |
| protected final Console console; |
| private final ProjectFilesystem projectFilesystem; |
| private final ArtifactCache artifactCache; |
| |
| protected AbstractCommandRunner(ArtifactCache artifactCache) { |
| this(System.out, |
| System.err, |
| new Console(System.out, System.err, new Ansi()), |
| new ProjectFilesystem(new File(".")), |
| artifactCache); |
| } |
| |
| protected AbstractCommandRunner(PrintStream stdOut, |
| PrintStream stdErr, |
| Console console, |
| ProjectFilesystem projectFilesystem, |
| ArtifactCache artifactCache) { |
| this.stdOut = Preconditions.checkNotNull(stdOut); |
| this.stdErr = Preconditions.checkNotNull(stdErr); |
| this.console = Preconditions.checkNotNull(console); |
| this.ansi = Preconditions.checkNotNull(console.getAnsi()); |
| this.projectFilesystem = Preconditions.checkNotNull(projectFilesystem); |
| this.artifactCache = Preconditions.checkNotNull(artifactCache); |
| } |
| |
| abstract T createOptions(BuckConfig buckConfig); |
| |
| private ParserAndOptions<T> createParser(BuckConfig buckConfig) { |
| T options = createOptions(buckConfig); |
| return new ParserAndOptions<T>(options); |
| } |
| |
| @Override |
| public final int runCommand(BuckConfig buckConfig, String[] args) throws IOException { |
| ParserAndOptions<T> parserAndOptions = createParser(buckConfig); |
| T options = parserAndOptions.options; |
| CmdLineParser parser = parserAndOptions.parser; |
| |
| boolean hasValidOptions = false; |
| try { |
| |
| parser.parseArgument(args); |
| hasValidOptions = true; |
| } catch (CmdLineException e) { |
| System.err.println(e.getMessage()); |
| } |
| |
| if (hasValidOptions && !options.showHelp()) { |
| return runCommandWithOptions(options); |
| } else { |
| printUsage(parser); |
| return 1; |
| } |
| } |
| |
| public final void printUsage(BuckConfig buckConfig) { |
| CmdLineParser parser = createParser(buckConfig).parser; |
| printUsage(parser); |
| } |
| |
| public final void printUsage(CmdLineParser parser) { |
| String intro = getUsageIntro(); |
| if (intro != null) { |
| System.err.println(intro); |
| } |
| parser.printUsage(System.err); |
| } |
| |
| /** |
| * @return the exit code this process should exit with or |
| * {@link #STATUS_NO_EXIT} if it should not shut down |
| */ |
| abstract int runCommandWithOptions(T options) throws IOException; |
| |
| /** |
| * @return may be null |
| */ |
| abstract String getUsageIntro(); |
| |
| public ProjectFilesystem getProjectFilesystem() { |
| return projectFilesystem; |
| } |
| |
| /** |
| * @return Creates a parser for this command. |
| */ |
| protected Parser createParser() { |
| // Find all the build files so we know where package boundaries are. |
| BuildFileTree buildFiles = BuildFileTree.constructBuildFileTree(getProjectFilesystem()); |
| |
| // Create a Parser. |
| return new Parser(getProjectFilesystem(), getArtifactCache(), buildFiles); |
| |
| } |
| |
| /** |
| * @return A list of {@link BuildTarget}s for the input buildTargetNames. |
| */ |
| protected ImmutableList<BuildTarget> getBuildTargets(Parser parser, List<String> buildTargetNames) |
| throws NoSuchBuildTargetException { |
| Preconditions.checkNotNull(parser); |
| Preconditions.checkNotNull(buildTargetNames); |
| |
| |
| ImmutableList.Builder<BuildTarget> buildTargets = ImmutableList.builder(); |
| |
| // Parse all of the build targets specified by the user. |
| BuildTargetParser buildTargetParser = parser.getBuildTargetParser(); |
| |
| for (String buildTargetName : buildTargetNames) { |
| buildTargets.add(buildTargetParser.parse(buildTargetName, ParseContext.fullyQualified())); |
| } |
| |
| return buildTargets.build(); |
| } |
| |
| public ArtifactCache getArtifactCache() { |
| return artifactCache; |
| } |
| |
| private static class ParserAndOptions<T> { |
| private final T options; |
| private final CmdLineParser parser; |
| |
| private ParserAndOptions(T options) { |
| this.options = options; |
| this.parser = new CmdLineParserAdditionalOptions(options); |
| } |
| } |
| |
| } |