import java.io.File;import java.io.IOException;import java.util.Vector;import org.apache.commons.io.FileUtils;import org.apache.tools.ant.BuildException;import org.apache.tools.ant.taskdefs.Java;import org.apache.tools.ant.types.CommandlineJava;/** * An ant task that writes a bourne script for launching interactive JRuby * shells. Extends the <java> task to take advantage of classpath handling * and java argument assembly, and overrides execute() to write the JVM * launch command-line to a file instead of executing it. * <p> * The ProjectShell is intended for exploratory programming, ad-hoc testing of * the project's API, and assembling test data. * <p> * @author dacc */public class ProjectShellAntTask extends Java{ private String outputScriptPath; private String initScriptPath; /** * @see Java#init() */ @Override public void init() throws BuildException { this.setClassname("org.jruby.Main"); this.setFork(true); super.init(); } /** * @see Java#execute() */ @Override public void execute() throws BuildException { CommandlineJava commandLine = getCommandLine(); String arguments = String.format("%s --readline -r irb/completion", initScriptPath); commandLine.createArgument().setLine(arguments); File scriptFile = new File(outputScriptPath); Vector<String> lines = new Vector<String>(2); lines.add("#!/usr/bin/env sh"); lines.add(commandLine.toString()); try { FileUtils.writeLines(scriptFile, lines); } catch ( IOException e ) { throw new BuildException(e); } log("Wrote project shell bourne script to " + outputScriptPath); } public String getInitScriptPath() { return initScriptPath; } /** * Set the path to a Ruby initialization script that should be run when the * shell starts up. * * @param initScriptPath * Filesystem path relative to the project root including file name. */ public void setInitScriptPath(String initScriptPath) { this.initScriptPath = initScriptPath; } public String getOutputScriptPath() { return outputScriptPath; } /** * Set the path of the bourne script to be written. * * @param outputScriptPath * Filesystem path relative to the project root including file name. */ public void setOutputScriptPath(String outputScriptPath) { this.outputScriptPath = outputScriptPath; }}