Clover coverage report - groovy - 1.0-beta-8
Coverage timestamp: Fri Dec 17 2004 14:55:55 GMT
file stats: LOC: 370   Methods: 10
NCLOC: 204   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
GroovyMain.java 0% 0% 0% 0%
coverage
 1   
 /*
 2   
  $Id: GroovyMain.java,v 1.11 2004/12/14 00:08:26 spullara Exp $
 3   
 
 4   
  Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
 5   
 
 6   
  Redistribution and use of this software and associated documentation
 7   
  ("Software"), with or without modification, are permitted provided
 8   
  that the following conditions are met:
 9   
 
 10   
  1. Redistributions of source code must retain copyright
 11   
  statements and notices.  Redistributions must also contain a
 12   
  copy of this document.
 13   
 
 14   
  2. Redistributions in binary form must reproduce the
 15   
  above copyright notice, this list of conditions and the
 16   
  following disclaimer in the documentation and/or other
 17   
  materials provided with the distribution.
 18   
 
 19   
  3. The name "groovy" must not be used to endorse or promote
 20   
  products derived from this Software without prior written
 21   
  permission of The Codehaus.  For written permission,
 22   
  please contact info@codehaus.org.
 23   
 
 24   
  4. Products derived from this Software may not be called "groovy"
 25   
  nor may "groovy" appear in their names without prior written
 26   
  permission of The Codehaus. "groovy" is a registered
 27   
  trademark of The Codehaus.
 28   
 
 29   
  5. Due credit should be given to The Codehaus -
 30   
  http://groovy.codehaus.org/
 31   
 
 32   
  THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
 33   
  ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 34   
  NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 35   
  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 36   
  THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 37   
  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 38   
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 39   
  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 40   
  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 41   
  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 42   
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 43   
  OF THE POSSIBILITY OF SUCH DAMAGE.
 44   
 
 45   
  */
 46   
 package groovy.ui;
 47   
 
 48   
 import groovy.lang.GroovyShell;
 49   
 import groovy.lang.MetaClass;
 50   
 import groovy.lang.Script;
 51   
 import org.apache.commons.cli.*;
 52   
 import org.codehaus.groovy.control.CompilationFailedException;
 53   
 import org.codehaus.groovy.control.CompilerConfiguration;
 54   
 import org.codehaus.groovy.runtime.InvokerHelper;
 55   
 
 56   
 import java.io.*;
 57   
 import java.util.Iterator;
 58   
 import java.util.List;
 59   
 
 60   
 /**
 61   
  * A Command line to execute groovy.
 62   
  *
 63   
  * @author Jeremy Rayner
 64   
  * @author Yuri Schimke
 65   
  * @version $Revision: 1.11 $
 66   
  */
 67   
 public class GroovyMain {
 68   
     // arguments to the script
 69   
     private List args;
 70   
 
 71   
     // is this a file on disk
 72   
     private boolean isScriptFile;
 73   
 
 74   
     // filename or content of script
 75   
     private String script;
 76   
 
 77   
     // process args as input files
 78   
     private boolean processFiles;
 79   
 
 80   
     // edit input files in place
 81   
     private boolean editFiles;
 82   
 
 83   
     // automatically output the result of each script
 84   
     private boolean autoOutput;
 85   
 
 86   
     // process sockets
 87   
     private boolean processSockets;
 88   
 
 89   
     // port to listen on when processing sockets
 90   
     private int port;
 91   
 
 92   
     // backup input files with extension
 93   
     private String backupExtension;
 94   
 
 95   
     // do you want full stack traces in script exceptions?
 96   
     private boolean debug = false;
 97   
 
 98   
     // Compiler configuration, used to set the encodings of the scripts/classes
 99   
     private CompilerConfiguration conf = new CompilerConfiguration();
 100   
 
 101   
     /**
 102   
      * Main CLI interface.
 103   
      *
 104   
      * @param args all command line args.
 105   
      */
 106  0
     public static void main(String args[]) {
 107  0
         MetaClass.setUseReflection(true);
 108   
 
 109  0
         Options options = buildOptions();
 110   
 
 111  0
         try {
 112  0
             CommandLine cmd = parseCommandLine(options, args);
 113   
 
 114  0
             if (cmd.hasOption('h')) {
 115  0
                 HelpFormatter formatter = new HelpFormatter();
 116  0
                 formatter.printHelp("groovy", options);
 117  0
             } else if (cmd.hasOption('v')) {
 118  0
                 String version = InvokerHelper.getVersion();
 119  0
                 System.out.println("Groovy Version: " + version + " JVM: " + System.getProperty("java.vm.version"));
 120   
             } else {
 121   
                 // If we fail, then exit with an error so scripting frameworks can catch it
 122  0
                 if (!process(cmd)) {
 123  0
                     System.exit(1);
 124   
                 }
 125   
             }
 126   
         } catch (ParseException pe) {
 127  0
             System.out.println("error: " + pe.getMessage());
 128  0
             HelpFormatter formatter = new HelpFormatter();
 129  0
             formatter.printHelp("groovy", options);
 130   
         }
 131   
     }
 132   
 
 133   
     /**
 134   
      * Parse the command line.
 135   
      *
 136   
      * @param options the options parser.
 137   
      * @param args    the command line args.
 138   
      * @return parsed command line.
 139   
      * @throws ParseException if there was a problem.
 140   
      */
 141  0
     private static CommandLine parseCommandLine(Options options, String[] args) throws ParseException {
 142  0
         CommandLineParser parser = new PosixParser();
 143  0
         CommandLine cmd = parser.parse(options, args, true);
 144  0
         return cmd;
 145   
     }
 146   
 
 147   
     /**
 148   
      * Build the options parser.  Has to be synchronized because of the way Options are constructed.
 149   
      *
 150   
      * @return an options parser.
 151   
      */
 152  0
     private static synchronized Options buildOptions() {
 153  0
         Options options = new Options();
 154   
 
 155  0
         options.addOption(OptionBuilder.hasArg(false).withDescription("usage information").withLongOpt("help").create('h'));
 156   
 
 157  0
         options.addOption(OptionBuilder.hasArg(false).withDescription("debug mode will print out full stack traces").withLongOpt("debug").create('d'));
 158   
 
 159  0
         options.addOption(OptionBuilder.hasArg(false).withDescription("display the Groovy and JVM versions").withLongOpt("version").create('v'));
 160   
 
 161  0
         options.addOption(OptionBuilder.withArgName("charset").hasArg().withDescription("specify the encoding of the files").withLongOpt("encoding").create('c'));
 162   
 
 163  0
         options.addOption(OptionBuilder.withArgName("script").hasArg().withDescription("specify a command line script").create('e'));
 164   
 
 165  0
         options.addOption(OptionBuilder.withArgName("extension").hasOptionalArg().withDescription("modify files in place").create('i'));
 166   
 
 167  0
         options.addOption(OptionBuilder.hasArg(false).withDescription("process files line by line").create('n'));
 168   
 
 169  0
         options.addOption(OptionBuilder.hasArg(false).withDescription("process files line by line and print result").create('p'));
 170   
 
 171  0
         options.addOption(OptionBuilder.withArgName("port").hasOptionalArg().withDescription("listen on a port and process inbound lines").create('l'));
 172  0
         return options;
 173   
     }
 174   
 
 175   
     /**
 176   
      * Process the users request.
 177   
      *
 178   
      * @param line the parsed command line.
 179   
      * @throws ParseException if invalid options are chosen
 180   
      */
 181  0
     private static boolean process(CommandLine line) throws ParseException {
 182  0
         GroovyMain main = new GroovyMain();
 183   
 
 184  0
         List args = line.getArgList();
 185   
 
 186   
         // add the ability to parse scripts with a specified encoding
 187  0
         if (line.hasOption('c')) {
 188  0
             main.conf.setSourceEncoding(line.getOptionValue("encoding"));
 189   
         }
 190   
 
 191  0
         main.isScriptFile = !line.hasOption('e');
 192  0
         main.debug = line.hasOption('d');
 193  0
         main.processFiles = line.hasOption('p') || line.hasOption('n');
 194  0
         main.autoOutput = line.hasOption('p');
 195  0
         main.editFiles = line.hasOption('i');
 196  0
         if (main.editFiles) {
 197  0
             main.backupExtension = line.getOptionValue('i');
 198   
         }
 199   
 
 200  0
         if (main.isScriptFile) {
 201  0
             if (args.isEmpty())
 202  0
                 throw new ParseException("neither -e or filename provided");
 203   
 
 204  0
             main.script = (String) args.remove(0);
 205  0
             if (main.script.endsWith(".java"))
 206  0
                 throw new ParseException("error: cannot compile file with .java extension: " + main.script);
 207   
         } else {
 208  0
             main.script = line.getOptionValue('e');
 209   
         }
 210   
 
 211  0
         main.processSockets = line.hasOption('l');
 212  0
         if (main.processSockets) {
 213  0
             String p = line.getOptionValue('l', "1960"); // default port to listen to
 214  0
             main.port = new Integer(p).intValue();
 215   
         }
 216  0
         main.args = args;
 217   
 
 218  0
         return main.run();
 219   
     }
 220   
 
 221   
 
 222   
     /**
 223   
      * Run the script.
 224   
      */
 225  0
     private boolean run() {
 226  0
         try {
 227  0
             if (processSockets) {
 228  0
                 processSockets();
 229  0
             } else if (processFiles) {
 230  0
                 processFiles();
 231   
             } else {
 232  0
                 processOnce();
 233   
             }
 234  0
             return true;
 235   
         } catch (Exception e) {
 236  0
             System.err.println("Caught: " + e);
 237  0
             if (debug) {
 238  0
                 e.printStackTrace();
 239   
             } else {
 240  0
                 StackTraceElement[] stackTrace = e.getStackTrace();
 241  0
                 for (int i = 0; i < stackTrace.length; i++) {
 242  0
                     StackTraceElement element = stackTrace[i];
 243  0
                     if (!element.getFileName().endsWith(".java")) {
 244  0
                         System.err.println("\tat " + element);
 245   
                     }
 246   
                 }
 247   
             }
 248  0
             return false;
 249   
         }
 250   
     }
 251   
 
 252   
     /**
 253   
      * Process Sockets.
 254   
      */
 255  0
     private void processSockets() throws CompilationFailedException, IOException {
 256  0
         GroovyShell groovy = new GroovyShell(conf);
 257  0
         Script s;
 258  0
         if (isScriptFile) {
 259  0
             s = groovy.parse(new File(script));
 260   
         } else {
 261  0
             s = groovy.parse(script, "main");
 262   
         }
 263  0
         new GroovySocketServer(groovy, isScriptFile, script, autoOutput, port);
 264   
     }
 265   
 
 266   
     /**
 267   
      * Process the input files.
 268   
      */
 269  0
     private void processFiles() throws CompilationFailedException, IOException {
 270  0
         GroovyShell groovy = new GroovyShell(conf);
 271   
 
 272  0
         Script s = null;
 273   
 
 274  0
         if (isScriptFile)
 275  0
             s = groovy.parse(new File(script));
 276   
         else
 277  0
             s = groovy.parse(script, "main");
 278   
 
 279  0
         if (args.isEmpty()) {
 280  0
             BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
 281  0
             PrintWriter writer = new PrintWriter(System.out);
 282   
 
 283  0
             processReader(s, reader, writer);
 284   
         } else {
 285  0
             Iterator i = args.iterator();
 286  0
             while (i.hasNext()) {
 287  0
                 String filename = (String) i.next();
 288  0
                 File file = new File(filename);
 289  0
                 processFile(s, file);
 290   
             }
 291   
         }
 292   
     }
 293   
 
 294   
     /**
 295   
      * Process a single input file.
 296   
      *
 297   
      * @param s    the script to execute.
 298   
      * @param file the input file.
 299   
      */
 300  0
     private void processFile(Script s, File file) throws IOException {
 301  0
         if (!file.exists())
 302  0
             throw new FileNotFoundException(file.getName());
 303   
 
 304  0
         if (!editFiles) {
 305  0
             BufferedReader reader = new BufferedReader(new FileReader(file));
 306  0
             try {
 307  0
                 PrintWriter writer = new PrintWriter(System.out);
 308  0
                 processReader(s, reader, writer);
 309  0
                 writer.flush();
 310   
             } finally {
 311  0
                 reader.close();
 312   
             }
 313   
         } else {
 314  0
             File backup = null;
 315  0
             if (backupExtension == null) {
 316  0
                 backup = File.createTempFile("groovy_", ".tmp");
 317  0
                 backup.deleteOnExit();
 318   
             } else {
 319  0
                 backup = new File(file.getPath() + backupExtension);
 320  0
                 backup.delete();
 321   
             }
 322  0
             if (!file.renameTo(backup))
 323  0
                 throw new IOException("unable to rename " + file + " to " + backup);
 324   
 
 325  0
             BufferedReader reader = new BufferedReader(new FileReader(backup));
 326  0
             try {
 327  0
                 PrintWriter writer = new PrintWriter(new FileWriter(file));
 328  0
                 try {
 329  0
                     processReader(s, reader, writer);
 330   
                 } finally {
 331  0
                     writer.close();
 332   
                 }
 333   
             } finally {
 334  0
                 reader.close();
 335   
             }
 336   
         }
 337   
     }
 338   
 
 339   
     /**
 340   
      * Process a script against a single input file.
 341   
      *
 342   
      * @param s      script to execute.
 343   
      * @param reader input file.
 344   
      * @param pw     output sink.
 345   
      */
 346  0
     private void processReader(Script s, BufferedReader reader, PrintWriter pw) throws IOException {
 347  0
         String line = null;
 348  0
         s.setProperty("out", pw);
 349  0
         while ((line = reader.readLine()) != null) {
 350  0
             s.setProperty("line", line);
 351  0
             Object o = s.run();
 352   
 
 353  0
             if (autoOutput) {
 354  0
                 pw.println(o);
 355   
             }
 356   
         }
 357   
     }
 358   
 
 359   
     /**
 360   
      * Process the standard, single script with args.
 361   
      */
 362  0
     private void processOnce() throws CompilationFailedException, IOException {
 363  0
         GroovyShell groovy = new GroovyShell(conf);
 364   
 
 365  0
         if (isScriptFile)
 366  0
             groovy.run(new File(script), args);
 367   
         else
 368  0
             groovy.run(script, "main", args);
 369   
     }
 370   
 }