Package org.aspectj.ajdt.ajc

Source Code of org.aspectj.ajdt.ajc.BuildArgParser$StringPrintWriter

/* *******************************************************************
* Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v1.0
* which accompanies this distribution and is available at
* http://www.eclipse.org/legal/epl-v10.html
* Contributors:
*     PARC     initial implementation
* ******************************************************************/

package org.aspectj.ajdt.ajc;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Locale;
import java.util.StringTokenizer;

import org.aspectj.ajdt.internal.core.builder.AjBuildConfig;
import org.aspectj.bridge.CountingMessageHandler;
import org.aspectj.bridge.IMessage;
import org.aspectj.bridge.IMessageHandler;
import org.aspectj.bridge.ISourceLocation;
import org.aspectj.bridge.Message;
import org.aspectj.bridge.MessageUtil;
import org.aspectj.bridge.SourceLocation;
import org.aspectj.bridge.Version;
import org.aspectj.org.eclipse.jdt.core.compiler.InvalidInputException;
import org.aspectj.org.eclipse.jdt.internal.compiler.batch.Main;
import org.aspectj.org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import org.aspectj.util.FileUtil;
import org.aspectj.util.LangUtil;
import org.aspectj.weaver.Constants;
import org.aspectj.weaver.Dump;
import org.aspectj.weaver.WeaverMessages;

@SuppressWarnings("unchecked")
public class BuildArgParser extends Main {

  private static final String BUNDLE_NAME = "org.aspectj.ajdt.ajc.messages";
  private static boolean LOADED_BUNDLE = false;

  static {
    Main.bundleName = BUNDLE_NAME;
    ResourceBundleFactory.getBundle(Locale.getDefault());
    if (!LOADED_BUNDLE) {
      LOADED_BUNDLE = true;
    }
  }

  /** to initialize super's PrintWriter but refer to underlying StringWriter */
  private static class StringPrintWriter extends PrintWriter {
    public final StringWriter stringWriter;

    StringPrintWriter(StringWriter sw) {
      super(sw);
      this.stringWriter = sw;
    }
  }

  /** @return multi-line String usage for the compiler */
  public static String getUsage() {
    return _bind("misc.usage", new String[] { _bind("compiler.name", (String[]) null) });
  }

  public static String getXOptionUsage() {
    return _bind("xoption.usage", new String[] { _bind("compiler.name", (String[]) null) });
  }

  /**
   * StringWriter sink for some errors. This only captures errors not handled by any IMessageHandler parameter and only when no
   * PrintWriter is set in the constructor. XXX This relies on (Sun's) implementation of StringWriter, which returns the actual
   * (not copy) internal StringBuffer.
   */
  private final StringBuffer errorSink;

  private IMessageHandler handler;

  /**
   * Overrides super's bundle.
   */
  public BuildArgParser(PrintWriter writer, IMessageHandler handler) {
    super(writer, writer, false);

    if (writer instanceof StringPrintWriter) {
      errorSink = ((StringPrintWriter) writer).stringWriter.getBuffer();
    } else {
      errorSink = null;
    }
    this.handler = handler;
  }

  /** Set up to capture messages using getOtherMessages(boolean) */
  public BuildArgParser(IMessageHandler handler) {
    this(new StringPrintWriter(new StringWriter()), handler);
  }

  /**
   * Generate build configuration for the input args, passing to handler any error messages.
   *
   * @param args the String[] arguments for the build configuration
   * @return AjBuildConfig per args, which will be invalid unless there are no handler errors.
   */
  public AjBuildConfig genBuildConfig(String[] args) {
    AjBuildConfig config = new AjBuildConfig();
    populateBuildConfig(config, args, true, null);
    return config;
  }

  /**
   * Generate build configuration for the input arguments, passing to handler any error messages.
   *
   * @param args the String[] arguments for the build configuration
   * @param setClasspath determines if the classpath should be parsed and set on the build configuration
   * @param configFile can be null
   * @return AjBuildConfig per arguments, which will be invalid unless there are no handler errors.
   */
  public AjBuildConfig populateBuildConfig(AjBuildConfig buildConfig, String[] args, boolean setClasspath, File configFile) {
    Dump.saveCommandLine(args);
    buildConfig.setConfigFile(configFile);
    try {
      // sets filenames to be non-null in order to make sure that file parameters are ignored
      super.filenames = new String[] { "" };

      AjcConfigParser parser = new AjcConfigParser(buildConfig, handler);
      parser.parseCommandLine(args);
      boolean swi = buildConfig.getShowWeavingInformation();
      // Now jump through firey hoops to turn them on/off
      if (handler instanceof CountingMessageHandler) {
        IMessageHandler delegate = ((CountingMessageHandler) handler).delegate;
        if (swi) {
          delegate.dontIgnore(IMessage.WEAVEINFO);
        } else {
          delegate.ignore(IMessage.WEAVEINFO);
        }
      }

      boolean incrementalMode = buildConfig.isIncrementalMode() || buildConfig.isIncrementalFileMode();

      List<File> xmlfileList = new ArrayList<File>();
      xmlfileList.addAll(parser.getXmlFiles());

      List<File> fileList = new ArrayList<File>();
      List<File> files = parser.getFiles();
      if (!LangUtil.isEmpty(files)) {
        if (incrementalMode) {
          MessageUtil.error(handler, "incremental mode only handles source files using -sourceroots");
        } else {
          fileList.addAll(files);
        }
      }

      List<String> javaArgList = new ArrayList<String>();
      // disable all special eclipse warnings by default - why???
      // ??? might want to instead override getDefaultOptions()
      javaArgList.add("-warn:none");
      // these next four lines are some nonsense to fool the eclipse batch compiler
      // without these it will go searching for reasonable values from properties
      // TODO fix org.eclipse.jdt.internal.compiler.batch.Main so this hack isn't needed
      javaArgList.add("-classpath");
      javaArgList.add(System.getProperty("user.dir"));
      javaArgList.add("-bootclasspath");
      javaArgList.add(System.getProperty("user.dir"));
      javaArgList.addAll(parser.getUnparsedArgs());
      super.configure(javaArgList.toArray(new String[javaArgList.size()]));

      if (!proceed) {
        buildConfig.doNotProceed();
        return buildConfig;
      }

      if (buildConfig.getSourceRoots() != null) {
        for (Iterator i = buildConfig.getSourceRoots().iterator(); i.hasNext();) {
          fileList.addAll(collectSourceRootFiles((File) i.next()));
        }
      }

      buildConfig.setXmlFiles(xmlfileList);

      buildConfig.setFiles(fileList);
      if (destinationPath != null) { // XXX ?? unparsed but set?
        buildConfig.setOutputDir(new File(destinationPath));
      }

      if (setClasspath) {
        buildConfig.setClasspath(getClasspath(parser));
        buildConfig.setBootclasspath(getBootclasspath(parser));
      }

      if (incrementalMode && (0 == buildConfig.getSourceRoots().size())) {
        MessageUtil.error(handler, "specify a source root when in incremental mode");
      }

      /*
       * Ensure we don't overwrite injars, inpath or aspectpath with outjar bug-71339
       */
      File outjar = buildConfig.getOutputJar();
      if (outjar != null) {

        /* Search injars */
        for (Iterator i = buildConfig.getInJars().iterator(); i.hasNext();) {
          File injar = (File) i.next();
          if (injar.equals(outjar)) {
            String message = WeaverMessages.format(WeaverMessages.OUTJAR_IN_INPUT_PATH);
            MessageUtil.error(handler, message);
          }
        }

        /* Search inpath */
        for (Iterator i = buildConfig.getInpath().iterator(); i.hasNext();) {
          File inPathElement = (File) i.next();
          if (!inPathElement.isDirectory() && inPathElement.equals(outjar)) {
            String message = WeaverMessages.format(WeaverMessages.OUTJAR_IN_INPUT_PATH);
            MessageUtil.error(handler, message);
          }
        }

        /* Search aspectpath */
        for (Iterator i = buildConfig.getAspectpath().iterator(); i.hasNext();) {
          File pathElement = (File) i.next();
          if (!pathElement.isDirectory() && pathElement.equals(outjar)) {
            String message = WeaverMessages.format(WeaverMessages.OUTJAR_IN_INPUT_PATH);
            MessageUtil.error(handler, message);
          }
        }

      }

      setDebugOptions();
      buildConfig.getOptions().set(options);
    } catch (InvalidInputException iie) {
      ISourceLocation location = null;
      if (buildConfig.getConfigFile() != null) {
        location = new SourceLocation(buildConfig.getConfigFile(), 0);
      }
      IMessage m = new Message(iie.getMessage(), IMessage.ERROR, null, location);
      handler.handleMessage(m);
    }
    return buildConfig;
  }

  public void printVersion() {
    final String version = bind("misc.version", //$NON-NLS-1$
        new String[] { bind("compiler.name"), //$NON-NLS-1$
            Version.text + " - Built: " + Version.time_text, bind("compiler.version"), //$NON-NLS-1$
            bind("compiler.copyright") //$NON-NLS-1$
        });
    System.out.println(version);
  }

  public void printUsage() {
    System.out.println(bind("misc.usage")); //$NON-NLS-1$
    System.out.flush();
  }

  /**
   * Get messages not dumped to handler or any PrintWriter.
   *
   * @param flush if true, empty errors
   * @return null if none, String otherwise
   * @see BuildArgParser()
   */
  public String getOtherMessages(boolean flush) {
    if (null == errorSink) {
      return null;
    }

    String result = errorSink.toString().trim();
    if (0 == result.length()) {
      result = null;
    }
    if (flush) {
      errorSink.setLength(0);
    }
    return result;
  }

  private void setDebugOptions() {
    options.put(CompilerOptions.OPTION_LocalVariableAttribute, CompilerOptions.GENERATE);
    options.put(CompilerOptions.OPTION_LineNumberAttribute, CompilerOptions.GENERATE);
    options.put(CompilerOptions.OPTION_SourceFileAttribute, CompilerOptions.GENERATE);
  }

  private Collection collectSourceRootFiles(File dir) {
    return Arrays.asList(FileUtil.listFiles(dir, FileUtil.aspectjSourceFileFilter));
  }

  public List<String> getBootclasspath(AjcConfigParser parser) {
    List<String> ret = new ArrayList<String>();

    if (parser.bootclasspath == null) {
      addClasspath(System.getProperty("sun.boot.class.path", ""), ret);
    } else {
      addClasspath(parser.bootclasspath, ret);
    }
    return ret;
  }

  /**
   * If the classpath is not set, we use the environment's java.class.path, but remove the aspectjtools.jar entry from that list
   * in order to prevent wierd bootstrap issues (refer to bug#39959).
   */
  public List getClasspath(AjcConfigParser parser) {
    List ret = new ArrayList();

    // if (parser.bootclasspath == null) {
    // addClasspath(System.getProperty("sun.boot.class.path", ""), ret);
    // } else {
    // addClasspath(parser.bootclasspath, ret);
    // }

    String extdirs = parser.extdirs;
    if (extdirs == null) {
      extdirs = System.getProperty("java.ext.dirs", "");
    }
    addExtDirs(extdirs, ret);

    if (parser.classpath == null) {
      addClasspath(System.getProperty("java.class.path", ""), ret);
      List fixedList = new ArrayList();
      for (Iterator it = ret.iterator(); it.hasNext();) {
        String entry = (String) it.next();
        if (!entry.endsWith("aspectjtools.jar")) {
          fixedList.add(entry);
        }
      }
      ret = fixedList;
    } else {
      addClasspath(parser.classpath, ret);
    }
    // ??? eclipse seems to put outdir on the classpath
    // ??? we're brave and believe we don't need it
    return ret;
  }

  private void addExtDirs(String extdirs, List classpathCollector) {
    StringTokenizer tokenizer = new StringTokenizer(extdirs, File.pathSeparator);
    while (tokenizer.hasMoreTokens()) {
      // classpathCollector.add(tokenizer.nextToken());
      File dirFile = new File(tokenizer.nextToken());
      if (dirFile.canRead() && dirFile.isDirectory()) {
        File[] files = dirFile.listFiles(FileUtil.ZIP_FILTER);
        for (int i = 0; i < files.length; i++) {
          classpathCollector.add(files[i].getAbsolutePath());
        }
      } else {
        // XXX alert on invalid -extdirs entries
      }
    }
  }

  private void addClasspath(String classpath, List<String> classpathCollector) {
    StringTokenizer tokenizer = new StringTokenizer(classpath, File.pathSeparator);
    while (tokenizer.hasMoreTokens()) {
      classpathCollector.add(tokenizer.nextToken());
    }
  }

  private class AjcConfigParser extends ConfigParser {
    private String bootclasspath = null;
    private String classpath = null;
    private String extdirs = null;
    private List unparsedArgs = new ArrayList();
    private AjBuildConfig buildConfig;
    private IMessageHandler handler;

    public AjcConfigParser(AjBuildConfig buildConfig, IMessageHandler handler) {
      this.buildConfig = buildConfig;
      this.handler = handler;
    }

    public List getUnparsedArgs() {
      return unparsedArgs;
    }

    /**
     * Extract AspectJ-specific options (except for argfiles). Caller should warn when sourceroots is empty but in incremental
     * mode. Signals warnings or errors through handler set in constructor.
     */
    public void parseOption(String arg, LinkedList args) { // XXX use ListIterator.remove()
      int nextArgIndex = args.indexOf(arg) + 1; // XXX assumes unique
      // trim arg?
      buildConfig.setXlazyTjp(true); // now default - MINOR could be pushed down and made default at a lower level
      if (LangUtil.isEmpty(arg)) {
        showWarning("empty arg found");
      } else if (arg.equals("-inpath")) {
        if (args.size() > nextArgIndex) {
          // buildConfig.getAjOptions().put(AjCompilerOptions.OPTION_Inpath, CompilerOptions.PRESERVE);

          List inPath = buildConfig.getInpath();
          StringTokenizer st = new StringTokenizer(((ConfigParser.Arg) args.get(nextArgIndex)).getValue(),
              File.pathSeparator);
          while (st.hasMoreTokens()) {
            String filename = st.nextToken();
            File file = makeFile(filename);
            if (FileUtil.isZipFile(file)) {
              inPath.add(file);
            } else {
              if (file.isDirectory()) {
                inPath.add(file);
              } else {
                showWarning("skipping missing, empty or corrupt inpath entry: " + filename);
              }
            }
          }
          buildConfig.setInPath(inPath);
          args.remove(args.get(nextArgIndex));
        }
      } else if (arg.equals("-injars")) {
        if (args.size() > nextArgIndex) {
          // buildConfig.getAjOptions().put(AjCompilerOptions.OPTION_InJARs, CompilerOptions.PRESERVE);

          StringTokenizer st = new StringTokenizer(((ConfigParser.Arg) args.get(nextArgIndex)).getValue(),
              File.pathSeparator);
          while (st.hasMoreTokens()) {
            String filename = st.nextToken();
            File jarFile = makeFile(filename);
            if (FileUtil.isZipFile(jarFile)) {
              buildConfig.getInJars().add(jarFile);
            } else {
              File dirFile = makeFile(filename);
              if (dirFile.isDirectory()) {
                buildConfig.getInJars().add(dirFile);
              } else {
                showWarning("skipping missing, empty or corrupt injar: " + filename);
              }
            }
          }

          args.remove(args.get(nextArgIndex));
        }
      } else if (arg.equals("-aspectpath")) {
        if (args.size() > nextArgIndex) {
          StringTokenizer st = new StringTokenizer(((ConfigParser.Arg) args.get(nextArgIndex)).getValue(),
              File.pathSeparator);
          while (st.hasMoreTokens()) {
            String filename = st.nextToken();
            File jarFile = makeFile(filename);
            if (FileUtil.isZipFile(jarFile) || jarFile.isDirectory()) {
              buildConfig.getAspectpath().add(jarFile);
            } else {
              showWarning("skipping missing, empty or corrupt aspectpath entry: " + filename);
            }
          }

          args.remove(args.get(nextArgIndex));
        }
      } else if (arg.equals("-makeAjReflectable")) {
        buildConfig.setMakeReflectable(true);
      } else if (arg.equals("-sourceroots")) {
        if (args.size() > nextArgIndex) {
          List sourceRoots = new ArrayList();
          StringTokenizer st = new StringTokenizer(((ConfigParser.Arg) args.get(nextArgIndex)).getValue(),
              File.pathSeparator);
          while (st.hasMoreTokens()) {
            File f = makeFile(st.nextToken());
            if (f.isDirectory() && f.canRead()) {
              sourceRoots.add(f);
            } else {
              showError("bad sourceroot: " + f);
            }
          }
          if (0 < sourceRoots.size()) {
            buildConfig.setSourceRoots(sourceRoots);
          }
          args.remove(args.get(nextArgIndex));
        } else {
          showError("-sourceroots requires list of directories");
        }
      } else if (arg.equals("-outjar")) {
        if (args.size() > nextArgIndex) {
          // buildConfig.getAjOptions().put(AjCompilerOptions.OPTION_OutJAR, CompilerOptions.GENERATE);
          File jarFile = makeFile(((ConfigParser.Arg) args.get(nextArgIndex)).getValue());
          if (!jarFile.isDirectory()) {
            try {
              if (!jarFile.exists()) {
                jarFile.createNewFile();
              }
              buildConfig.setOutputJar(jarFile);
            } catch (IOException ioe) {
              showError("unable to create outjar file: " + jarFile);
            }
          } else {
            showError("invalid -outjar file: " + jarFile);
          }
          args.remove(args.get(nextArgIndex));
        } else {
          showError("-outjar requires jar path argument");
        }
      } else if (arg.equals("-outxml")) {
        buildConfig.setOutxmlName(org.aspectj.bridge.Constants.AOP_AJC_XML);
      } else if (arg.equals("-outxmlfile")) {
        if (args.size() > nextArgIndex) {
          String name = ((ConfigParser.Arg) args.get(nextArgIndex)).getValue();
          buildConfig.setOutxmlName(name);
          args.remove(args.get(nextArgIndex));
        } else {
          showError("-outxmlfile requires file name argument");
        }
      } else if (arg.equals("-log")) {
        // remove it as it's already been handled in org.aspectj.tools.ajc.Main
        args.remove(args.get(nextArgIndex));
      } else if (arg.equals("-messageHolder")) {
        // remove it as it's already been handled in org.aspectj.tools.ajc.Main
        args.remove(args.get(nextArgIndex));
      } else if (arg.equals("-incremental")) {
        buildConfig.setIncrementalMode(true);
      } else if (arg.equals("-XincrementalFile")) {
        if (args.size() > nextArgIndex) {
          File file = makeFile(((ConfigParser.Arg) args.get(nextArgIndex)).getValue());
          buildConfig.setIncrementalFile(file);
          if (!file.canRead()) {
            showError("bad -XincrementalFile : " + file);
            // if not created before recompile test, stop after first compile
          }
          args.remove(args.get(nextArgIndex));
        } else {
          showError("-XincrementalFile requires file argument");
        }
      } else if (arg.equals("-crossrefs")) {
        buildConfig.setGenerateCrossRefsMode(true);
        buildConfig.setGenerateModelMode(true);
      } else if (arg.startsWith("-checkRuntimeVersion:")) {
        String lcArg = arg.toLowerCase();
        if (lcArg.endsWith(":false")) {
          buildConfig.setCheckRuntimeVersion(false);
        } else if (lcArg.endsWith(":true")) {
          buildConfig.setCheckRuntimeVersion(true);
        } else {
          showError("bad value for -checkRuntimeVersion option, must be true or false");
        }
      } else if (arg.equals("-emacssym")) {
        buildConfig.setEmacsSymMode(true);
        buildConfig.setGenerateModelMode(true);
      } else if (arg.equals("-XjavadocsInModel")) {
        buildConfig.setGenerateModelMode(true);
        buildConfig.setGenerateJavadocsInModelMode(true);
      } else if (arg.equals("-Xdev:NoAtAspectJProcessing")) {
        buildConfig.setNoAtAspectJAnnotationProcessing(true);
      } else if (arg.equals("-XaddSerialVersionUID")) {
        buildConfig.setAddSerialVerUID(true);
      } else if (arg.equals("-xmlConfigured")) {
        buildConfig.setXmlConfigured(true);
      } else if (arg.equals("-Xdev:Pinpoint")) {
        buildConfig.setXdevPinpointMode(true);
      } else if (arg.startsWith("-Xjoinpoints:")) {
        buildConfig.setXJoinpoints(arg.substring(13));
      } else if (arg.equals("-noWeave") || arg.equals("-XnoWeave")) {
        showWarning("the noweave option is no longer required and is being ignored");
      } else if (arg.equals("-XterminateAfterCompilation")) {
        buildConfig.setTerminateAfterCompilation(true);
      } else if (arg.equals("-XserializableAspects")) {
        buildConfig.setXserializableAspects(true);
      } else if (arg.equals("-XlazyTjp")) {
        // do nothing as this is now on by default
        showWarning("-XlazyTjp should no longer be used, build tjps lazily is now the default");
      } else if (arg.startsWith("-Xreweavable")) {
        showWarning("-Xreweavable is on by default");
        if (arg.endsWith(":compress")) {
          showWarning("-Xreweavable:compress is no longer available - reweavable is now default");
        }
      } else if (arg.startsWith("-Xset:")) {
        buildConfig.setXconfigurationInfo(arg.substring(6));
      } else if (arg.startsWith("-aspectj.pushin=")) {
        // a little dirty but this should never be used in the IDE
        try {
          System.setProperty("aspectj.pushin", arg.substring(16));
        } catch (Exception e) {
          e.printStackTrace();
        }
      } else if (arg.startsWith("-XnotReweavable")) {
        buildConfig.setXnotReweavable(true);
      } else if (arg.equals("-XnoInline")) {
        buildConfig.setXnoInline(true);
      } else if (arg.equals("-XhasMember")) {
        buildConfig.setXHasMemberSupport(true);
      } else if (arg.startsWith("-showWeaveInfo")) {
        buildConfig.setShowWeavingInformation(true);
      } else if (arg.equals("-Xlintfile")) {
        if (args.size() > nextArgIndex) {
          File lintSpecFile = makeFile(((ConfigParser.Arg) args.get(nextArgIndex)).getValue());
          // XXX relax restriction on props file suffix?
          if (lintSpecFile.canRead() && lintSpecFile.getName().endsWith(".properties")) {
            buildConfig.setLintSpecFile(lintSpecFile);
          } else {
            showError("bad -Xlintfile file: " + lintSpecFile);
            buildConfig.setLintSpecFile(null);
          }
          args.remove(args.get(nextArgIndex));
        } else {
          showError("-Xlintfile requires .properties file argument");
        }
      } else if (arg.equals("-Xlint")) {
        // buildConfig.getAjOptions().put(
        // AjCompilerOptions.OPTION_Xlint,
        // CompilerOptions.GENERATE);
        buildConfig.setLintMode(AjBuildConfig.AJLINT_DEFAULT);
      } else if (arg.startsWith("-Xlint:")) {
        if (7 < arg.length()) {
          buildConfig.setLintMode(arg.substring(7));
        } else {
          showError("invalid lint option " + arg);
        }
      } else if (arg.equals("-bootclasspath")) {
        if (args.size() > nextArgIndex) {
          String bcpArg = ((ConfigParser.Arg) args.get(nextArgIndex)).getValue();
          StringBuffer bcp = new StringBuffer();
          StringTokenizer strTok = new StringTokenizer(bcpArg, File.pathSeparator);
          while (strTok.hasMoreTokens()) {
            bcp.append(makeFile(strTok.nextToken()));
            if (strTok.hasMoreTokens()) {
              bcp.append(File.pathSeparator);
            }
          }
          bootclasspath = bcp.toString();
          args.remove(args.get(nextArgIndex));
        } else {
          showError("-bootclasspath requires classpath entries");
        }
      } else if (arg.equals("-classpath") || arg.equals("-cp")) {
        if (args.size() > nextArgIndex) {
          String cpArg = ((ConfigParser.Arg) args.get(nextArgIndex)).getValue();
          StringBuffer cp = new StringBuffer();
          StringTokenizer strTok = new StringTokenizer(cpArg, File.pathSeparator);
          while (strTok.hasMoreTokens()) {
            cp.append(makeFile(strTok.nextToken()));
            if (strTok.hasMoreTokens()) {
              cp.append(File.pathSeparator);
            }
          }
          classpath = cp.toString();
          args.remove(args.get(nextArgIndex));
        } else {
          showError("-classpath requires classpath entries");
        }
      } else if (arg.equals("-extdirs")) {
        if (args.size() > nextArgIndex) {
          String extdirsArg = ((ConfigParser.Arg) args.get(nextArgIndex)).getValue();
          StringBuffer ed = new StringBuffer();
          StringTokenizer strTok = new StringTokenizer(extdirsArg, File.pathSeparator);
          while (strTok.hasMoreTokens()) {
            ed.append(makeFile(strTok.nextToken()));
            if (strTok.hasMoreTokens()) {
              ed.append(File.pathSeparator);
            }
          }
          extdirs = ed.toString();
          args.remove(args.get(nextArgIndex));
        } else {
          showError("-extdirs requires list of external directories");
        }
        // error on directory unless -d, -{boot}classpath, or -extdirs
      } else if (arg.equals("-d")) {
        dirLookahead(arg, args, nextArgIndex);
        // } else if (arg.equals("-classpath")) {
        // dirLookahead(arg, args, nextArgIndex);
        // } else if (arg.equals("-bootclasspath")) {
        // dirLookahead(arg, args, nextArgIndex);
        // } else if (arg.equals("-extdirs")) {
        // dirLookahead(arg, args, nextArgIndex);
      } else if (arg.equals("-proceedOnError")) {
        buildConfig.setProceedOnError(true);
      } else if (new File(arg).isDirectory()) {
        showError("dir arg not permitted: " + arg);
      } else if (arg.startsWith("-Xajruntimetarget")) {
        if (arg.endsWith(":1.2")) {
          buildConfig.setTargetAspectjRuntimeLevel(Constants.RUNTIME_LEVEL_12);
        } else if (arg.endsWith(":1.5")) {
          buildConfig.setTargetAspectjRuntimeLevel(Constants.RUNTIME_LEVEL_15);
        } else {
          showError("-Xajruntimetarget:<level> only supports a target level of 1.2 or 1.5");
        }
      } else if (arg.equals("-timers")) {
        buildConfig.setTiming(true);
        // swallow - it is dealt with in Main.runMain()
      } else if (arg.equals("-1.5")) {
        buildConfig.setBehaveInJava5Way(true);
        unparsedArgs.add("-1.5");
        // this would enable the '-source 1.5' to do the same as '-1.5' but doesnt sound quite right as
        // as an option right now as it doesnt mean we support 1.5 source code - people will get confused...
      } else if (arg.equals("-1.6")) {
        buildConfig.setBehaveInJava5Way(true);
        unparsedArgs.add("-1.6");
      } else if (arg.equals("-source")) {
        if (args.size() > nextArgIndex) {
          String level = ((ConfigParser.Arg) args.get(nextArgIndex)).getValue();
          if (level.equals("1.5") || level.equals("5") || level.equals("1.6") || level.equals("6")) {
            buildConfig.setBehaveInJava5Way(true);
          }
          unparsedArgs.add("-source");
          unparsedArgs.add(level);
          args.remove(args.get(nextArgIndex));
        }
      } else {
        // argfile, @file parsed by superclass
        // no eclipse options parsed:
        // -d args, -help (handled),
        // -classpath, -target, -1.3, -1.4, -source [1.3|1.4]
        // -nowarn, -warn:[...], -deprecation, -noImportError,
        // -g:[...], -preserveAllLocals,
        // -referenceInfo, -encoding, -verbose, -log, -time
        // -noExit, -repeat
        // (Actually, -noExit grabbed by Main)
        unparsedArgs.add(arg);
      }
    }

    protected void dirLookahead(String arg, LinkedList argList, int nextArgIndex) {
      unparsedArgs.add(arg);
      ConfigParser.Arg next = (ConfigParser.Arg) argList.get(nextArgIndex);
      String value = next.getValue();
      if (!LangUtil.isEmpty(value)) {
        if (new File(value).isDirectory()) {
          unparsedArgs.add(value);
          argList.remove(next);
          return;
        }
      }
    }

    public void showError(String message) {
      ISourceLocation location = null;
      if (buildConfig.getConfigFile() != null) {
        location = new SourceLocation(buildConfig.getConfigFile(), 0);
      }
      IMessage errorMessage = new Message(CONFIG_MSG + message, IMessage.ERROR, null, location);
      handler.handleMessage(errorMessage);
      // MessageUtil.error(handler, CONFIG_MSG + message);
    }

    protected void showWarning(String message) {
      ISourceLocation location = null;
      if (buildConfig.getConfigFile() != null) {
        location = new SourceLocation(buildConfig.getConfigFile(), 0);
      }
      IMessage errorMessage = new Message(CONFIG_MSG + message, IMessage.WARNING, null, location);
      handler.handleMessage(errorMessage);
      // MessageUtil.warn(handler, message);
    }

    protected File makeFile(File dir, String name) {
      name = name.replace('/', File.separatorChar);
      File ret = new File(name);
      if (dir == null || ret.isAbsolute()) {
        return ret;
      }
      try {
        dir = dir.getCanonicalFile();
      } catch (IOException ioe) {
      }
      return new File(dir, name);
    }

  }
}
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