From 7ac5ae3331c68f07ba62dc69b5621a99e5f8277a Mon Sep 17 00:00:00 2001
From: hns <hannesw@gmail.com>
Date: Fri, 9 Feb 2001 18:49:44 +0000
Subject: [PATCH] Removed Interpret.java

---
 src/FESI/Interpreter/Interpret.java | 1530 ---------------------------
 1 file changed, 1530 deletions(-)
 delete mode 100644 src/FESI/Interpreter/Interpret.java

diff --git a/src/FESI/Interpreter/Interpret.java b/src/FESI/Interpreter/Interpret.java
deleted file mode 100644
index 3aa6584e..00000000
--- a/src/FESI/Interpreter/Interpret.java
+++ /dev/null
@@ -1,1530 +0,0 @@
-// Interpret.java
-// FESI Copyright (c) Jean-Marc Lugrin, 1999
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Lesser General Public
-// License as published by the Free Software Foundation; either
-// version 2 of the License, or (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// Lesser General Public License for more details.
-
-// You should have received a copy of the GNU Lesser General Public
-// License along with this library; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
-package FESI.Interpreter;
-
-import FESI.Parser.*;
-import FESI.AST.*;
-import FESI.Extensions.Extension;
-import FESI.Extensions.BasicIOInterface;
-// no GUI needed for Hop
-// import FESI.gui.*;
-import FESI.Data.*;
-import FESI.Exceptions.*;
-
-import java.io.*;
-import java.util.Enumeration;
-import java.util.Vector;
-import java.util.StringTokenizer;
-import java.util.Properties;
-
-/**
- * A general purpose interpreter for basic command line and GUI interfaces.
- * Load common extensions and provide various useful if limited commands
- * to evaluate and test scripts.
- * <P>This class can be subclassed, however the interface for subclassing can
- * evolve over time. It may be preferable to write interpreters from scratchs
- * using this one as an example.
- */
-public class Interpret { // removed implements InterpreterCommands
-  
-	// Most of the data is protected to allow subclassing the
-	// interpreter. They should NOT be used from other classses
-	// of this package (at least in FESI), as FESI can be
-	// build for other interpreter environments.
-  protected static final InputStream originalIn = System.in;
-  protected static final PrintStream originalOut = System.out;
-  protected static final PrintStream originalErr = System.err;
-   
-  protected InputStream inputStream = System.in;
-  protected PrintStream printStream = System.out;
-  protected PrintStream errorStream = System.err;
-   
-  private boolean versionPrinted = false;
-  protected boolean interactive = false;
-  protected boolean windowOnly = false;  // Use MessageBox for alert, and GUI if interactive
-  protected boolean isAWT = true;        // If false, use Swing (if windowOnly)
-  protected boolean anyError = false;    // Any error in a test file
-  protected boolean anyMainTest = false; // any file processed by -T
-  private static String eol = System.getProperty("line.separator", "\n");
-  protected ESObject document = null;
-  protected Evaluator evaluator = new Evaluator();
- 
-  protected DataInputStream lineReader = null;
-	protected GuiFactory guiFactory = null;
-  protected Console console = null;
-
-  // For interactive evaluation - protected for subclass use ONLY
-  protected ESValue lastResult = null; // Means last command did not evaluate anything
-  protected long timeOfEval= 0;  // Valid only if lastResult is not null
-  protected long startTime = 0;
-  protected  ESValue theValue = ESUndefined.theUndefined;
-  protected String[] esArgs = new String[0]; // Arguments after -A
-
-  /**
-   * Create and initialize the interpreter
-   */
-  public Interpret() {
-      super();
-      setupCommands();
-  }
-
-	/**
-	 * Overridable error exit (can be changed by subclass)
-	 * IMPLEMENTATION SHOULD NOT RETURN
-	 */
-	protected void errorExit() {
-		System.exit(1);
-	}
-	
-  /**
-   * Exit with a status of 0 if no error was detected and 1 otherwise
-   */
-  public void exit() {
-      System.exit(anyError ? 1 : 0);
-  }
-  
-  /**
-   * Forget any last result of a previous evaluation.
-   */
-  void clearLastResult() {
-      lastResult = null;
-  }
-  
-	
-	/**
-	 * Do any standard extension initialization. Can be overriden for
-	 * specific implementation.
-	 */
-	protected void loadCommonExtensions() {
-    try {
-        evaluator.addMandatoryExtension("FESI.Extensions.JavaAccess");
-    } catch (EcmaScriptException e) {
-        errorStream.println("Cannot initialize JavaAccess - exiting: " + eol + e);
-        e.printStackTrace();
-        errorExit();
-    }
-    
-    try {
-        evaluator.addMandatoryExtension("FESI.Extensions.Database");
-    } catch (EcmaScriptException e) {
-        errorStream.println("Cannot initialize Database - exiting: " + eol + e);
-        e.printStackTrace();
-        errorExit();
-    }
-
-    // Note that we use OptinalRegExp, so it is not a problem of the ORO
-	  // stuff is notpresent.
-    try {
-        evaluator.addMandatoryExtension("FESI.Extensions.OptionalRegExp");
-    } catch (EcmaScriptException e) {
-        errorStream.println("Cannot initialize OptionalRegExp - exiting: " + eol + e);
-        e.printStackTrace();
-        errorExit();
-    }
-    
-	}
-	
-  /** 
-   * Reset the system (including at initialization)
-   */
-  protected void reset() throws EcmaScriptException {
-    
-    if (windowOnly) {
-        if (console != null) { 
-            // A reset from an existing console
-            if (isAWT) {  
-                // reset stream while out of console.
-                System.setIn(originalIn);
-                System.setOut(originalOut);
-                System.setErr(originalErr);
-                inputStream = originalIn;
-                printStream = originalOut;
-                errorStream = originalErr;
-                // The AWT window tends to be badly behaved, we can
-                // reset it as well
-                console.dispose();
-                console = null;
-            } else {
-                // assume Swing
-                console.clear();
-            }
-        }
-    }
-      
-    // Reset the main evaluator, forgetting all globals
-    evaluator.reset();
-    
-    if (windowOnly && isAWT) {  
-        BasicIOInterface basicIOw = null;       
-        try {
-            basicIOw = (BasicIOInterface) evaluator.addMandatoryExtension("FESI.Extensions.BasicIOw");
-        } catch (EcmaScriptException e) {
-            errorStream.println("Cannot initialize BasicIOw - exiting: " + eol + e);
-            e.printStackTrace();
-            errorExit();
-        }
-        document = basicIOw.getDocument();
-    } else if (windowOnly && !isAWT) {
-        BasicIOInterface basicIOs = null;        
-        try {
-            basicIOs = (BasicIOInterface) evaluator.addMandatoryExtension("FESI.Extensions.BasicIOs");
-        } catch (EcmaScriptException e) {
-            errorStream.println("Cannot initialize BasicIOs - exiting: " + eol + e);
-            e.printStackTrace();
-            errorExit();
-        }
-        document = basicIOs.getDocument();
-    } else {
-        BasicIOInterface basicIO = null;
-        try {
-            basicIO = (BasicIOInterface) evaluator.addMandatoryExtension("FESI.Extensions.BasicIO");
-        } catch (EcmaScriptException e) {
-            errorStream.println("Cannot initialize BasicIO - exiting: " + eol + e);
-            e.printStackTrace();
-            errorExit();
-        }
-        document = basicIO.getDocument();
-    }
-    
-   loadCommonExtensions();
-
-    if (windowOnly && interactive) {
-        if (console == null) {
-        	try {
-            if (isAWT) {
-            	guiFactory = (GuiFactory) Class.forName("FESI.awtgui.AwtGuiFactory").newInstance();
-            } else {
-              guiFactory = (GuiFactory) Class.forName("FESI.swinggui.SwingGuiFactory").newInstance();
-            }
-           } catch (ClassNotFoundException ex) {
-              errorStream.println("Cannot load GUI - exiting: " + eol + ex);
-              ex.printStackTrace();
-              errorExit();
-           } catch (IllegalAccessException ex) {
-              errorStream.println("Cannot load GUI - exiting: " + eol + ex);
-              ex.printStackTrace();
-              errorExit();
-           } catch (InstantiationException ex) {
-              errorStream.println("Cannot load GUI - exiting: " + eol + ex);
-              ex.printStackTrace();
-              errorExit();
-        	 }
-        }
-    	   console = guiFactory.makeConsole(this, getTitle() ,25,80);
-    	
-        inputStream = console.getConsoleIn();
-        printStream = console.getConsoleOut();
-        errorStream = console.getConsoleOut();
-        // lineReader = console.getConsoleIn();
-        lineReader = new DataInputStream(inputStream);
-        System.setIn(inputStream);
-        System.setOut(printStream);
-        System.setErr(errorStream);
-    } else if (interactive) {
-        // BufferedReader lineReader = new BufferedReader(new InputStreamReader(System.in));
-        lineReader = new DataInputStream(inputStream);
-    }
-
-    // Wait until IO has been redirected
-    try {
-        evaluator.addMandatoryExtension("FESI.Extensions.FileIO");
-    } catch (EcmaScriptException e) {
-        errorStream.println("Cannot initialize FileIO - exiting: " + eol + e);
-        e.printStackTrace();
-        errorExit();
-    }
-
-    if (interactive) {
-          printVersion();
-    }
-  }
-
-  /**
-   * Print standard version text
-   */
-  protected void printVersion() {
-      printStream.println(Evaluator.getWelcomeText());
-      versionPrinted = true;
-  }
-    
-  /**
-   * Display standard about text (for GUI)
-   */
-  public void displayAboutText() {
-      printAbout();
-  }
-
-	/**
-	 * Define the title of the window (to help implementing subclasses)
-	 */
-	protected String getTitle() {
-		return "FESI - EcmaScript interpreter";
-	}
-	
-  /**
-   * Print standard ABOUT text
-   */
-  protected void printAbout() {
-      printVersion();
-      printStream.println();
-      printStream.println("Provided 'as is', use at your own risk, no support available.");
-      printStream.println("Can be freely used and redistributed as long as this notice is included.");
-      printStream.println("Feedback may be sent to 'jmlugrin@worldcom.ch', but I may not");
-      printStream.println("be able (or willing) to answer all mails.");
-  }
-
-  /**
-   * Print a message waiting for a confirmation from the user
-   */
-  protected void finalMessage(String str) {
-      if (windowOnly && guiFactory != null) {
-          MessageBox mb = guiFactory.displayMessageBox("FESI Error", str);
-          mb.waitOK();
-                    
-      } else {
-          
-         errorStream.println(str);
-      }
-  }
-  
-  /**
-   * Print a short usage guide
-   */
-  protected void usage() {
-      errorStream.println("usage: fesi [-waivD] [-e ext] [-T file] [-h file] [-f file] [-m module] [-o outfile] file -A ...");
-      errorStream.println("      -w  Use message box for alert and AWT GUI if interactive");
-      errorStream.println("      -s  As -w, but use Swing instead of AWT");
-      errorStream.println("      -i  Start interactive read-eval-print loop");
-      errorStream.println("      -v  display version even if not interactive");
-      errorStream.println("      -e ext   Load the extension class ext");
-      errorStream.println("      -T file   Process an estest file, exit 1 if any failure");
-
-      errorStream.println("      -h file   Expand the script in an html file");
-      errorStream.println("      -D  turnon all debug flags");
-      errorStream.println("      -f file   Load and execute the specified file");
-      errorStream.println("      -m module Load and execute the specified module from FESI.path");
-      errorStream.println("      -o file   Redirect standard output to that file");
-      errorStream.println("      file  Load file in editor or interpret it");
-      errorStream.println("      --  Standard input to load (loaded last if not present)");
-      errorStream.println("      -A...  Remaining arguments are for EcmaScript args[]");
-      errorStream.println("  By default silently interprets stdin");
-      errorStream.println();
-  }
-  
-  /**
-   * Process arguments and interpret what is required
-   * MADE PUBLIC TO EASE USAGE ON THIS CLASS BY USER APPLICATIONS
-   * This is not called by any other routine in FESI.
-   * @param args the argument String array
-   */
-  public void doWork(String args[]) {
-    boolean someFileLoaded = false;
- 
-    // first pass to handle -i, -w, -s options
-  	  // Selecting the interactive mode and GUI
-   OUTONE:
-    for (int i=0; i<args.length; i++) {
-      String arg = args[i];
-      if (arg.startsWith("-")) {
-         for (int j=1; j<arg.length();j++) {
-            char c = arg.charAt(j);   
-            if (c=='i') {
-              interactive = true;
-              continue;
-            } else if (c=='w') {
-              windowOnly = true;
-              continue;
-            } else if (c=='s') {
-              windowOnly = true;
-              isAWT = false;
-              continue;
-            } else if (c=='A') {
-              break OUTONE;  // After -A reserved for called program
-            }
-        } // for
-      } // if
-    }  // for
- 
-    try {
-        reset();
-    } catch (EcmaScriptException e) {
-        errorStream.println("[[Error during initialization: " +e.getMessage() + "]]");
-        e.printStackTrace();
-        return;
-    }
-       
-    // second pass to handle -o, -v and -D options and check other options validity
-    // This pass validates the positional rules of the options
-    OUTTWO: // for each argument
-      for (int i=0; i<args.length; i++) {
-      String arg = args[i];
-      if (arg.startsWith("-")) {
-          if (arg.equals("--")) continue OUTTWO;
-        INTWO:  // for each letter in - argument
-          for (int j=1; j<arg.length();j++) {
-              char c = arg.charAt(j);   
-              if (c=='o') {
-                  if (j<arg.length()-1) {
-                      if (! windowOnly) usage();
-                      finalMessage("-o must be last option in '-' string");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                  if (i<args.length) {
-                      String fileName = args[++i];
-                      File outFile = new File(fileName);
-                      try {
-                        // USE DEPRECATED ROUTINE AS DEFAULT IO STREAMS USE DEPRECATED STREAMS
-                         printStream = new PrintStream(new FileOutputStream(outFile));
-                         System.setOut(printStream);
-                         continue OUTTWO;
-                      } catch (IOException e){
-                         finalMessage("[[IO Error creating output file' " + fileName + 
-                             "']]" +
-                             eol + "[[IO Error: " + e.getMessage() + "]]");
-                         if (interactive) errorExit();
-                         return;
-                      }
-                  } else {
-                      if (! windowOnly) usage();
-                      finalMessage("-o requires a file parameter");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                
-              } else if (c=='i') {   // already handle
-                  continue INTWO;
-                  
-              } else if (c=='D') {
-                  ESLoader.setDebugJavaAccess(true);
-                  ESLoader.setDebugLoader(true);
-                  ESWrapper.setDebugEvent(true);
-                  evaluator.setDebugParse(true);
-                  continue INTWO;
-                  
-              } else if (c=='v') {
-                  if (!versionPrinted) printVersion();
-                  continue INTWO;
-                  
-              } else if (c=='w') {  // already handled
-                  continue INTWO;
-                  
-              } else if (c=='s') {  // already handled
-                  continue INTWO;
-                  
-              } else if (c=='e') { 
-                  if (j<arg.length()-1) {
-                      if (! windowOnly) usage();
-                      finalMessage("-e must be last option in '-' string");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                  if (i+1>=args.length) {
-                      if (! windowOnly) usage();
-                      finalMessage("-e requires a file parameter");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                  i++;  // Skip file name
-                  continue OUTTWO; 
-                  
-              } else if (c=='T') { 
-                  if (j<arg.length()-1) {
-                      if (! windowOnly) usage();
-                      finalMessage("-T must be last option in '-' string");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                  if (i+1>=args.length) {
-                      if (! windowOnly) usage();
-                      finalMessage("-T requires a file parameter");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                  i++;  // Skip file name
-                  continue OUTTWO; 
-                  
-              } else if (c=='f') { 
-                  if (j<arg.length()-1) {
-                      if (! windowOnly) usage();
-                      finalMessage("-f must be last option in '-' string");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                  if (i+1>=args.length) {
-                      if (! windowOnly) usage();
-                      finalMessage("-f requires a file parameter");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                  i++;  // Skip file name
-                  continue OUTTWO; 
-                  
-              } else if (c=='m') { 
-                  if (j<arg.length()-1) {
-                      if (! windowOnly) usage();
-                      finalMessage("-m must be last option in '-' string");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                  if (i+1>=args.length) {
-                      if (! windowOnly) usage();
-                      finalMessage("-m requires a file parameter");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                  i++;  // Skip file name
-                  continue OUTTWO; 
-
-              } else if (c=='h') { 
-                  if (j<arg.length()-1) {
-                      if (! windowOnly) usage();
-                      finalMessage("-h must be last option in '-' string");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                  if (i+1>=args.length) {
-                      if (! windowOnly) usage();
-                      finalMessage("-h requires a file parameter");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                  i++;  // Skip file name
-                  continue OUTTWO; 
-                  
-              } else if (c=='A') { 
-                  if (j<arg.length()-1) {
-                      if (! windowOnly) usage();
-                      finalMessage("-A must be last option in '-' string");
-                      if (interactive) errorExit();
-                      return;
-                  }
-                  i++; // skip to first args
-                  int l = args.length - i;
-                  esArgs = new String[l];
-                  for (int k = 0; i<args.length; i++, k++) {
-                      esArgs[k]=args[i];
-                  }
-                  break OUTTWO;
-
-              } else {  
-                  if (! windowOnly) usage();
-                  finalMessage("Unrecognize option '"+ c + "' on command line");
-                  if (interactive) errorExit();
-                  return;
-              }
-          } // for
-       } // if
-    } // for
-
-
-   // Set the args array from values after -A
-   try {
-       ESObject ap = evaluator.getArrayPrototype();
-       ArrayPrototype argsArray = new ArrayPrototype(ap, evaluator);
-       for (int i=0; i<esArgs.length; i++) {
-          argsArray.putProperty(i, new ESString(esArgs[i]));   
-       }
-       ESObject go = evaluator.getGlobalObject();
-       String ARGSstring = ("args").intern();
-       go.putProperty(ARGSstring, argsArray, ARGSstring.hashCode());
-    } catch (EcmaScriptException e) {
-    }
-
-    // Third pass to load files
-   OUTTHREE:
-    for (int i=0; i<args.length; i++) {
-      String arg = args[i];
-      if (arg.startsWith("-") && !args.equals("--")) {
-        INTHREE:  // for each letter in - argument
-          for (int j=1; j<arg.length();j++) {
-              char c = arg.charAt(j);   
-              if (c=='i') {  // already handled
-                  continue INTHREE;
-                  
-              } else if (c=='v') {  // already handled
-                  continue INTHREE;
-                  
-              } else if (c=='w') {  // already handled
-                  continue INTHREE;
-                  
-              } else if (c=='s') {  // already handled
-                  continue INTHREE;
-                  
-              } else if (c=='D') {  // already handled
-                  continue INTHREE;
-                        
-              } else if (c=='o') {  // already handled
-                  i++;  // skip file name
-                  continue INTHREE;
-                        
-              } else if (c=='T') {  
-                  String fileName = args[++i];
-                  someFileLoaded = true; // So it exit without reading stdin not not -i
-                  doTest(fileName);
-                  anyMainTest = true;
-                  continue OUTTHREE;
-              	
-              } else if (c=='e') {  
-                  String extensionName = args[++i];
-                  try {
-                      evaluator.addMandatoryExtension(extensionName);
-                  } catch (EcmaScriptException e) {
-                      errorStream.println("Cannot load extension extensionName - exiting: " + eol + e);
-                      errorExit();
-                  }
-                  continue OUTTHREE;
-                        
-              } else if (c=='f') {  
-                  String fileName = args[++i];
-                  someFileLoaded = true; // So it exit without reading stdin not not -i
-                  doLoadFile(fileName);
-                  continue OUTTHREE;
-                        
-              } else if (c=='m') {  
-                  String moduleName = args[++i];
-                  someFileLoaded = true; // So it exit without reading stdin not not -i
-                  doLoad(moduleName);
-                  continue OUTTHREE;
-                        
-              } else if (c=='h') {  
-                  String fileName = args[++i];
-                  someFileLoaded = true; // So it exit without reading stdin not not -i
-                  doExpand(fileName);
-                  continue OUTTHREE;
-                  
-              } else if (c=='A') {
-                  break OUTTHREE;
-              }
-            
-
-            } // for
-            continue OUTTHREE;
-       } // starts with -
-      
-      // Falls here only if args is a file name or is --
-      String fileName = args[i];
-      
-      // Check if -- (execute code from stdin)
-      if (fileName.equals("--")) {
-          if (interactive) {
-              errorStream.println("Argument '--' not allowed in interactive mode");
-              errorExit();
-          } else {
-              someFileLoaded = true; // So it exits without reading stdin not not -i
-              try {
-                evaluator.evaluate(new BufferedReader(new InputStreamReader(System.in)),
-                             null, new FileEvaluationSource("<System.in>", null),false);
-              } catch (EcmaScriptException e) {
-                  finalMessage(e.getMessage() + eol +
-                             "[[Error loading file '" + fileName + "']]");
-                 if (interactive) errorExit();
-                 return;
-              } 
-           } 
-          
-      // Else a file name to edit
-      } else {
-          
-          if (interactive && console.supportsEditing()) {
-              console.createEditor(fileName);
-          } else {
-              doLoad(fileName); // If not interactive just load the file
-          }
-          
-      } 
-             
-    } // for OUTTHREE
-    
-    if (interactive) {
-        
-        printStream.println("Interactive read eval print loop - type @help for a list of commands");
-        
-        try {
-            printStream.print("> "); printStream.flush();
-            // USE DEPRECATED ROUTINE AS DEFAULT IO STREAMS USE DEPRECATED STREAMS
-            String line = lineReader.readLine();
-
-            while(line!= null) {
-                
-                if (line.startsWith("@")) {
-                    StringTokenizer st = new StringTokenizer(line);
-                    String command = null;
-                    String parameter = null;
-                    command=st.nextToken().toLowerCase().trim();
-                    if (st.hasMoreTokens()) {
-                        parameter = st.nextToken().trim();
-                    }  
-                    // printStream.println("command '" + command +"'");
-                    
-                    if (Command.executeCommand(this, printStream, command, parameter)) break;         
-                   
-                } else if (!line.equals("")){  // Real evaluation
-                
-                    while (true) {
-                        lastResult = null;
-                        try {
-                            startTime = System.currentTimeMillis();
-                            theValue = evaluator.evaluate(line);
-                            timeOfEval = System.currentTimeMillis() - startTime;
-                            lastResult = theValue;
-                            if (theValue != null) printStream.println("@@ Result: " + theValue.toString());
-                        } catch (EcmaScriptException e) {
-                            if (e.isIncomplete()) {
-                               printStream.print("More> "); printStream.flush();
-                              // USE DEPRECATED ROUTINE AS DEFAULT IO STREAMS USE DEPRECATED STREAMS
-                               String moreLine = lineReader.readLine();
-                               if (moreLine != null) {
-                                   if (moreLine.startsWith("@end")) {
-                                        printStream.println("[[Error: " + e.getMessage() + "]]");
-                                        break; // Terminate with current error
-                                   } else if (moreLine.startsWith("@")) {
-                                       printStream.println("[[Only command @end allowed when reading script end]]");
-                                       printStream.println("[[Command and script ignored]]");
-                                       break;
-                                   }
-                                   line = line + eol + moreLine;
-                                   // printStream.println();
-                                   continue; 
-                               }
-                            }
-                          printStream.println("[[Error: " + e.getMessage() + "]]");
-                          // e.printStackTrace();
-                        } catch (Exception e) {
-                          printStream.println("[[**Uncatched error: " + e + "]]");
-                          e.printStackTrace();
-                        } 
-                        break;
-                    } 
-                }
-                printStream.print("> "); printStream.flush();
-                // USE DEPRECATED ROUTINE AS DEFAULT IO STREAMS USE DEPRECATED STREAMS
-                line = lineReader.readLine();
-             }  
-          } catch (IOException e) {
-             errorStream.println("[[IO error reading line: " + e + "]]");
-             errorExit();
-          }
-          
-      } else {   // if !interactive
-          if (!someFileLoaded) {  // No file on command line, load standard input in batch
-              try {
-                evaluator.evaluate(new BufferedReader(new InputStreamReader(System.in)), 
-                            null, new FileEvaluationSource("<System.in>", null),false);
-                someFileLoaded = true;
-              } catch (EcmaScriptException e) {
-                 finalMessage(e.getMessage() +
-                     eol + "[[Error interpreting standard input]]");
-                 if (interactive) errorExit();
-                 return;
-             }
-          } 
-      }
-      // Normal exit - force exit in case other thread where started (awt)
-      if (interactive || anyMainTest) exit();
-  }
-
-  /**
-   * Display the current user directoy
-   */
-  protected void doPwd() {
-      String ud = System.getProperty("user.dir", "");
-      printStream.println("[[User directory: " + ud + "]]");
-  }
-
-  /**
-   * Display the current load path
-   */
-  protected void doPath() {
-       String pathSource = "FESI.path";
-       String path = System.getProperty(pathSource, null);
-       pathSource = "java.class.path";
-       if (path == null) path = System.getProperty("java.class.path",null);
-       if (path == null) {
-           pathSource = "DEFAULT";
-           path = ".";
-       }
-       printStream.println("[[Load path (" + pathSource + "): " + path + "]]");
-  }
-   
-  /**
-   * Do the command load, loading from a module (via a path)
-   * @param moduleName module to load
-   */
-  protected void doLoad(String moduleName) {
-      if (moduleName==null || moduleName.equals("")) {
-        printStream.println("[[Module name missing for @load.]]");
-        return;
-      }
-      try {
-          try {
-            document.putHiddenProperty("URL", 
-                           new ESString("module://" + moduleName));
-          } catch (EcmaScriptException ignore) {
-          }
-        printStream.println("@@ Loading module '" + moduleName + "' . . .");
-        startTime = System.currentTimeMillis();
-        
-        theValue = evaluator.evaluateLoadModule(moduleName);        // EVALUATION
-        
-        timeOfEval = System.currentTimeMillis() - startTime;
-        lastResult = theValue;
-        if (theValue != null) printStream.println("@@ Resulting in: " + theValue);
-      } catch (EcmaScriptException e) {
-         printStream.println("[[Error loading the module '" + moduleName + "']]");
-         printStream.println("[[Error: " + e.getMessage() + "]]");
-      } catch (Exception e) {
-          printStream.println("[[**Uncatched error: " + e + "]]");
-          e.printStackTrace();
-      } finally {
-          try {
-                 document.putHiddenProperty("URL", 
-                        new ESString("module://<stdin>"));
-          } catch (EcmaScriptException ignore) {
-          }
-     }
-  }
-
-  /**
-   * Load a file from a specified directory and file name.
-   * Called by the GUI to load a file found by the file chooser.
-   * @param directoryName The name of the directory
-   * @param fileName the name of the file
-   */
-  public void loadFile(String directoryName, String fileName) {
-      File directory = new File(directoryName);
-      File file = new File(directory, fileName);
-       if (file.exists()) {
-          try {
-              try {
-                document.putHiddenProperty("URL", 
-                               new ESString("file://" + file.getCanonicalPath()));
-              } catch (EcmaScriptException ignore) {
-              } catch (IOException ignore) {
-              }
-              printStream.println("@@ Loading file '" + file.getPath() + "' . . .");
-        
-              theValue = evaluator.evaluateLoadFile(file);        // EVALUATION
-              if (interactive && theValue != null) {
-                   printStream.println("@@ Resulting in: " + theValue);
-              }
-                  
-            } catch (EcmaScriptException e) {
-                errorStream.println(e.getMessage() + 
-                eol + "[[Error loading file' " + file.getPath() + "']]");
-                return;
-            } finally {
-               try {
-                   document.putHiddenProperty("URL", 
-                                new ESString("file://<stdin>"));
-               } catch (EcmaScriptException ignore) {
-               }
-          }
-      } else {        
-          errorStream.println("[[File " + file.getPath() + " not found]]");
-      }
-     
-  }
-  
-
-  /**
-   * Execute a string - return the line number of any error or 0
-   * Called by the GUI to load a buffer content.
-   * @param text The text to execute
-   * @param source The identification of the source
-   * @return the line number of any error if possible or 0
-   */
-  public int executeString(String text, String source) {
-      try {
-          try {
-            document.putHiddenProperty("URL", 
-                           new ESString("source://" + source));
-          } catch (EcmaScriptException ignore) {
-          }
-          printStream.println("@@ Executing '" + source + "' . . .");
-    
-          theValue = evaluator.evaluate(text, source);        // EVALUATION
-          if (interactive && theValue != null) {
-               printStream.println("@@ Resulting in: " + theValue);
-          }
-              
-        } catch (EcmaScriptException e) {
-            errorStream.println(e.getMessage() + 
-            eol + "[[Error executing '" + source + "']]");
-            return e.getLineNumber();
-        } finally {
-           try {
-               document.putHiddenProperty("URL", 
-                            new ESString("file://<stdin>"));
-           } catch (EcmaScriptException ignore) {
-           }
-      }
-      return 0;
-  }
-
-  /**
-   * Load a file given as a parameter
-   * @param fileName the name of the file
-   */
-  protected void doLoadFile(String fileName) {
-      // Maybe we have an absolute file name given by the interactive shell
-      File file = new File(fileName);
-      if (!file.exists()) {
-          file = new File(fileName + ".es");
-      }
-      if (!file.exists()) {
-          file = new File(fileName + ".esw");
-      }
-      if (!file.exists()) {
-          file = new File(fileName + ".js");
-      }
-      if (file.exists()) {
-          try {
-              try {
-                document.putHiddenProperty("URL", 
-                               new ESString("file://" + file.getCanonicalPath()));
-              } catch (EcmaScriptException ignore) {
-              } catch (IOException ignore) {
-              }
-              if (interactive)
-                  printStream.println("@@ Loading file '" + file.getPath() + "' . . .");
-            
-                  theValue = evaluator.evaluateLoadFile(file);        // EVALUATION
-                  if (interactive && theValue != null) {
-                       printStream.println("@@ Resulting in: " + theValue);
-                  }
-                  
-            } catch (EcmaScriptException e) {
-                finalMessage(e.getMessage() + 
-                eol + "[[Error loading file' " + file.getPath() + "']]");
-                if (!interactive) errorExit();
-                return;
-            } finally {
-               try {
-                         document.putHiddenProperty("URL", 
-                                new ESString("file://<stdin>"));
-               } catch (EcmaScriptException ignore) {
-               }
-          }
-      } else {
-         
-          finalMessage("File " + file.getPath() + " not found");
-          if (interactive) errorExit();
-      }
-  }
-  
-  /**
-   * Expand an html source file containing <script> commands
-   * @param file to expand
-   */
-  protected void doExpand(String fileName) {
-      if (fileName == null || fileName.equals("")) {
-        errorStream.println("[[File name missing for @expand.]]");
-        if (! interactive) errorExit();
-        return;
-      }
-      File file = new File(fileName);
-      if (!file.exists()) {
-          file = new File(fileName + ".html");
-      }
-      if (!file.exists()) {
-          file = new File(fileName + ".htm");
-      }
-      BufferedReader lr = null;
-     try {
-         document.putHiddenProperty("URL", 
-                            new ESString("file://" + file.getAbsolutePath()));
-        lr = new BufferedReader(new FileReader(file));
-        if (interactive) printStream.println("@@ Expanding html file '" + 
-                                                file.getPath() + "' . . .");
-        boolean inScript = false;
-        StringBuffer script = null;
-        String src = lr.readLine();
-        String srclc = src.toLowerCase();
-        int lineNumber = 0;
-        while (src!= null) {
-            lineNumber ++;
-            if (inScript && srclc.indexOf("</script>")!=-1) {
-                inScript = false;
-                evaluator.evaluate(script.toString());
-            } else if (inScript) {
-                script.append(src+eol);
-            } else if (srclc.indexOf("<script>")!=-1) {
-                inScript = true;
-                script = new StringBuffer();
-            } else {
-                 printStream.println(src);
-            }
-            src = lr.readLine();
-            srclc = (src == null ) ? null : src.toLowerCase();
-        }
-      
-        if (inScript) {
-            errorStream.println("[[Error - end of file reached with openened <script>]]");
-        }
-      } catch (FileNotFoundException e) {
-        errorStream.println("[[File '" + fileName + "' not found.]]");
-      } catch (EcmaScriptException e) {
-         errorStream.println("[[Error expanding the file '" + file.getPath() + "']]");
-         errorStream.println("[[Error: " + e.getMessage() + "]]");
-      } catch (Exception e) {
-          errorStream.println("[[**Uncatched error: " + e + "]]");
-          e.printStackTrace(errorStream);
-      } finally {
-          try { 
-            document.putHiddenProperty("URL", 
-                            new ESString("file://<stdin>"));
-          } catch (EcmaScriptException e) {}
-              if (lr!= null) {try {lr.close();} catch (IOException e) {}}
-      }
-   }
-
-   /**
-    * Process a test file using the test conventions
-    * @param fileName Source test file
-    */
-   protected void doTest(String fileName) {
-      if (fileName== null || fileName.equals("")) {
-        errorStream.println("[[File name missing for @test.]]");
-        if (! interactive) errorExit();
-        return;
-      }
-      
-    File file = new File(fileName);
-    if (!file.exists()) {
-      file = new File(fileName + ".estest");
-    }
-    BufferedReader lr = null;
-    int nTests = 0;
-    int nSuccess = 0;
-    int nErrors = 0;
-    try {
-		lr = new BufferedReader(new FileReader(file));
-		document.putHiddenProperty("URL", 
-					   new ESString("file://" + file.getAbsolutePath()));
-		printStream.println("@@ Processing test file '" + file.getPath() + "' . . .");
-		String currentTest = null;
-		StringBuffer scriptBuffer = new StringBuffer();
-		String src = lr.readLine();
-		String srclc = src.toLowerCase();
-		int lineNumber = 0;
-		while (src!= null) {
-			lineNumber ++;
-			if  (srclc.startsWith("@test")) {
-				String scriptString = new String(scriptBuffer);
-				if (currentTest != null) {
-					nTests ++;
-					boolean success = testString(currentTest, scriptString, file);
-                        if (success) {nSuccess ++;} else { nErrors++; anyError=true;}
-				} else {
-					// The header part is not protected against errors
-					evaluator.evaluate(scriptString);
-				}
-				scriptBuffer = new StringBuffer();
-				currentTest = src;
-			} else {
-				scriptBuffer.append(src);
-				scriptBuffer.append("\n");
-			}
-			src = lr.readLine();
-			srclc = (src == null ) ? null : src.toLowerCase();
-		}
-
-		if (currentTest != null) {
-			nTests ++;
-    		String scriptString = new String(scriptBuffer);
-			boolean success = testString(currentTest, scriptString, file);
-			if (success) {nSuccess ++;} else { nErrors++; anyError=true;}
-		} 
-    
-    } catch (FileNotFoundException e) {
-        errorStream.println("[[File '" + fileName + "' not found.]]");
-    } catch (EcmaScriptException e) {
-         errorStream.println("[[Error expanding the file '" + file.getPath() + "']]");
-         errorStream.println("[[Error: " + e.getMessage() + "]]");
-    } catch (Exception e) {
-       errorStream.println("[[**Uncatched error: " + e + "]]");
-      e.printStackTrace(errorStream);
-    } finally {
-      if (lr!= null) {try {lr.close();} catch (IOException e) {}}
-
-      try { 
-        document.putHiddenProperty("URL", 
-                        new ESString("file://<stdin>"));
-      } catch (EcmaScriptException e) {}
-    }
-    printStream.println("@@ " + nTests + " tests, " + 
-              nSuccess + " successes, " + 
-              nErrors + " errors.");
-  }
-  
-  /**
-   * Execute a fragment to test in a controlled environment
-   * @param currentTest Name of the test to execute
-   * @param scriptString The fragment to test
-   * @param file The source of tests 
-   */
-  protected boolean testString(String currentTest, String scriptString, File file) {
-    printStream.println("@@ Testing " + currentTest);
-    try {
-        ESValue theValue = evaluator.evaluate(scriptString);
-        if (theValue == null) {
-               throw new EcmaScriptException("No value returned from @test");
-        }
-        boolean success = false;
-        try {
-            success = theValue.booleanValue();
-        } catch (EcmaScriptException e) {
-               throw new EcmaScriptException("@test did not return a boolean value");
-        } 
-        if (!success) {
-               throw new EcmaScriptException("@test did not return 'true'");
-        }
-        return true;
-    } catch (Exception e) {
-        printStream.println("[[Test " + currentTest + 
-                           " in file " + file.getPath() + " failed]]");
-        printStream.println("[[Error: " + e.getMessage() + "]]");
-        return false;                                   
-    }
-  }
-  
-  /**
-   * Print details of last execution
-   */
-  protected void printDetail() {
-      if (lastResult == null) {
-          printStream.println("** No last result available");
-      } else {
-          printStream.println("** Result: " + lastResult.toDetailString());
-          printStream.println("** Evaluated in " + timeOfEval + 
-                                      " ms (note: +/-20 ms precision!)");
-      }
-  }
-
-  protected void toggleDebugParse() {
-        evaluator.setDebugParse( ! evaluator.isDebugParse());
-        printStream.println("@@ debugParse is now: " + evaluator.isDebugParse());
-  }               
-                        
-  protected void toggleDebugJavaAccess() {
-        ESLoader.setDebugJavaAccess( ! ESLoader.isDebugJavaAccess());
-        printStream.println("@@ debugJavaAccess is now: " + ESLoader.isDebugJavaAccess());
-  }
-                        
-  protected void toggleDebugLoader() {
-        ESLoader.setDebugLoader( ! ESLoader.isDebugLoader());
-        printStream.println("@@ debugLoader is now: " + ESLoader.isDebugLoader());
-  }
-     
-  protected void toggleDebugEvent() {                   
-         ESWrapper.setDebugEvent( ! ESWrapper.isDebugEvent());
-         printStream.println("@@ debugJavaAccess is now: " + ESWrapper.isDebugEvent());
-  }
-   
-  /**
-   * List the loaded extensions
-   */
-  protected void listExtensions() {
-         int i = 0;
-         for (Enumeration e = evaluator.getExtensions(); 
-                                 e.hasMoreElements() ;) {
-              printStream.println(" " + e.nextElement());
-              i++;
-         }
-         printStream.println(" " + i + " extensions loaded");
-  }
-  /**
-   * Display the @help text information (called by the GUI)
-   */
-  public void displayHelpText() {
-      printHelp();
-  }
-
-  /**
-   * Print the help message on the print stream
-   */
-  protected void printHelp() {
-       Command.printHelp(printStream);
-  }
-
-  /**
-   * Reset the evaluator, forgetting all global variables
-   */
-  protected void resetEvaluator() {
-        try {
-           printStream.println("@@ Reseting global object to default values");
-           reset();
-        } catch (EcmaScriptException e) {
-            errorStream.println("[[Error during initialization: " +e.getMessage() + "]]");
-            e.printStackTrace();
-           return;
-        }
-  }
-    
-  /**
-   * List the free memory
-   */
-  protected void listMemory() {
-        Runtime rt = Runtime.getRuntime();
-        long fm = rt.freeMemory();
-        long tm = rt.totalMemory();
-        printStream.println("@@ Total memory: " + tm + ", free memory: " + fm);
-  }
-    
-  /**
-   * List the visible properties of an object
-   * @param parameter The expression returning an object on which to list the properties
-   */
-  protected void listProperties(String parameter) {
-        ESObject listObject = evaluator.getGlobalObject();
-        try {
-            if (parameter != null) {
-                ESValue listValue = evaluator.evaluate(parameter);
-                if (! (listValue instanceof ESObject)) {
-                   printStream.println("Cannot evaluate '" + parameter +"' to an object");
-                   return;
-               }
-               listObject = (ESObject) listValue;
-            }
-            boolean directEnumeration = listObject.isDirectEnumerator();
-            for (Enumeration e = listObject.getProperties() ; e.hasMoreElements() ;) {
-               String property = e.nextElement().toString();
-               printStream.print(property);
-               if (! directEnumeration) {
-                   String propertyValue = 
-                           listObject.getProperty(property, property.hashCode()).toString();
-                   // Remove leading eol
-                   while (propertyValue.indexOf("\n")==0) {
-                       propertyValue = propertyValue.substring(1);
-                   }
-                   while (propertyValue.indexOf(eol)==0) {
-                       propertyValue = propertyValue.substring(eol.length());
-                   }
-                   // limit size
-                   if (propertyValue.length()>250) {
-                       propertyValue = propertyValue.substring(0,250) + "...";
-                   }
-                   // keep only first line
-                   int ieol = propertyValue.indexOf(eol);
-                   if (ieol==-1) ieol = propertyValue.indexOf("\n");
-                   if (ieol!=-1) {
-                       propertyValue = propertyValue.substring(0,ieol) + "...";
-                   }
-                   printStream.println(": " + propertyValue);
-               }
-           }
-       } catch (Exception e) {
-           printStream.println("Cannot evaluate '" + parameter +"' properties");
-           printStream.println(e);
-       }
-   }  
-
-   /**
-    * List all propoerties of an object (visible or not)
-    * @param parameter The expression returning an object on which to list the properties
-    */
-   protected void listAllProperties(String parameter) {
-        ESObject listObject = evaluator.getGlobalObject();
-        try {
-            if (parameter != null) {
-                ESValue listValue = evaluator.evaluate(parameter);
-                if (! (listValue instanceof ESObject)) {
-                   printStream.println("Cannot evaluate '" + parameter +"' to an object");
-                   return;
-               }
-               listObject = (ESObject) listValue;
-            }
-            for (Enumeration e = listObject.getAllProperties() ; e.hasMoreElements() ;) {
-               String property = e.nextElement().toString();
-               ESValue propertyValue = listObject.getProperty(property, property.hashCode());
-               printStream.println(propertyValue.getDescription(property));
-            }
-       } catch (Exception e) {
-           printStream.println("Cannot evaluate '" + parameter +"' properties");
-           printStream.println(e);
-       }
-   }
-    
-
-   /**
-    * Clear the console
-    */
-   protected void clearConsole () {
-       if (console != null) {    // defensive programming
-           console.clear();
-       }
-   }
-   
-  /**
-   * Describe an object
-   * @param paramter Expression resulting in object to describe
-   */
-  protected void describe(String parameter) {
-        ESValue toBeDescribed = evaluator.getGlobalObject();
-        try {
-            if (parameter != null) {
-                toBeDescribed = evaluator.evaluate(parameter);
-            } else {
-                parameter = "global";
-            }
-            printStream.println(toBeDescribed.getDescription(parameter));
-            
-            if (toBeDescribed.isComposite()) {
-                for (Enumeration e = toBeDescribed.getAllDescriptions() ; e.hasMoreElements() ;) {
-                    ValueDescription description = (ValueDescription) e.nextElement();
-                    printStream.println("   " + description.toString());
-                }
-            }
-       } catch (Exception e) {
-           printStream.println("Cannot evaluate '" + parameter +"'");
-           printStream.println(e);
-       }
-   }
-
-
-   /**
-    * Setup the command array
-    */
-   protected void setupCommands() {
-       // Add commands in alphabetic order preferably
-       new Command("about", "display general information") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.printAbout();
-                return false;
-          }
-       };
-       new Command("clear", "Clear console output") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.clearConsole();
-                return false;
-          }
-       };
-       new Command("debugEvent", "Toggle debug flag for event processing") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.toggleDebugEvent();
-                return false;
-          }
-       };
-       new Command("debugLoader", "Toggle debug flag for dynamic loading") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.toggleDebugLoader();
-                return false;
-          }
-       };
-       new Command("debugJavaAccess", "Toggle debug flag for java interfacing") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.toggleDebugJavaAccess();
-                return false;
-          }
-       };
-       new Command("debugParse", "Toggle debug flag for parsing") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.toggleDebugParse();
-                return false;
-          }
-       };
-       new Command("describe", "Display details on the value given as parameter") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.describe(parameter);
-                return false;
-          }
-       };
-       new Command("detail", "Display details on last result of an evaluation") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.printDetail();
-                return false;
-          }
-       };
-       new Command("exit", "Exit the interpreter") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                return true;
-          }
-       };
-       new Command("expand", "Expand between <script></script> in an .html file") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.clearLastResult();
-                interpreter.doExpand(parameter);
-                return false;
-          }
-       };
-       new Command("extensions", "Display the list of loaded extensions") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.listExtensions();
-                return false;
-          }
-       };
-       new Command("help", "Display the list of commands") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.printHelp();
-                return false;
-          }
-       };
-       new Command("list", "List the enumerated properties of the object") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.listProperties(parameter);
-                return false;
-          }
-       };
-       new Command("listAll", "List all properties of the object") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-
-                interpreter.listAllProperties(parameter);
-                return false;
-          }
-       };
-       new Command("load", "Load a .js, .es or .esw file") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.clearLastResult();
-                interpreter.doLoad(parameter);
-                return false;
-          }
-       };
-       new Command("memory", "Give information on available memory") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.listMemory();
-                return false;
-          }
-       };
-       new Command("path", "Display the current load path") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.doPath();
-                return false;
-          }
-       };
-       new Command("pwd", "Display the current user directory") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.doPwd();
-                return false;
-          }
-       };
-       new Command("reset", "Restore the interpreter to the initial state") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.clearLastResult();
-                interpreter.resetEvaluator();
-                return false;
-          }
-       };
-       new Command("test", "Execute a test file (.estest)") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.clearLastResult();
-                interpreter.doTest(parameter);
-                return false;
-          }
-       };
-       new Command("version", "Display the version of the interpreter") {
-           boolean doCommand(Interpret interpreter, String parameter) {
-                interpreter.printVersion();
-                return false;
-          }
-       };
-   }
-
-  /**
-   * Main interpreter
-   * @param args String parameter array
-   */
-  public static void main(String args[]) {
-      Interpret i = new Interpret();
-      i.doWork(args);
-  }
-
-}
-
-/**
- * Common code for all commands
- */
-abstract class Command {
-    
-    /**
-     * Keep track of all commands
-     */
-    static private Vector allCommands = new Vector();
-    
-    protected String name;
-    protected String lowerCaseName;   // For case insensitive search
-    protected String help;
-    
-    /**
-     * Print the help text of a command
-     */
-    static void printHelp(PrintStream printStream) {
-        for (Enumeration e = allCommands.elements() ; e.hasMoreElements() ;) {
-            Command cmd = (Command) e.nextElement();
-            printStream.println("  @"+cmd.name+ " - " + cmd.help);
-        }
-    }
-    
-    /**
-     * Execute a command
-     * @param interpreter The interpreter context
-     * @param printStream The output stream to use
-     * @param command the command name (as typed)
-     * @param parameter the command parameter string
-     */
-    static boolean executeCommand(Interpret interpreter, 
-                               PrintStream printStream,
-                               String command, 
-                               String parameter) {
-        Vector foundCmds = new Vector();
-        String lcCommand = command.toLowerCase();
-        for (Enumeration e = allCommands.elements() ; e.hasMoreElements() ;) {
-            Command cmd = (Command) e.nextElement();
-            if (cmd.lowerCaseName.equals(command)) {
-                // Exact same name, execute
-                return cmd.doCommand(interpreter, parameter);
-            } else if (cmd.lowerCaseName.startsWith(command)) {
-                // Prefix, add to list of candidates
-                foundCmds.addElement(cmd);
-            }
-        }
-        if (foundCmds.size()==0) {
-            printStream.println("@@ Command '" + command + "' not recognized");
-            interpreter.printHelp();
-        } else if (foundCmds.size()==1) {
-            Command cmd = (Command) foundCmds.elementAt(0);
-            return cmd.doCommand(interpreter, parameter);
-        } else {
-            printStream.println("@@ Command More than one command starting with '" + 
-                                        command + "'");
-            for (Enumeration e = foundCmds.elements() ; e.hasMoreElements() ;) {
-                Command cmd = (Command) e.nextElement();
-                printStream.println("  @"+cmd.name+ " - " + cmd.help);
-            }
-        }
-        return false;
-    }
-    
-    /**
-     * Define a new command by name with a specified help string
-     */
-    Command(String name, String help) {
-        this.name = name;
-        this.lowerCaseName = "@" + name.toLowerCase();
-        this.help = help;
-        allCommands.addElement(this);
-    }
-    
-    /**
-     * Execute a command with the specified parameter
-     * @param interpreter the interpreter context
-     * @param parameter The string parameter
-     * @return true if the interpreter must exit
-     */
-    abstract boolean doCommand(Interpret interpreter, String parameter);
-}