Source Code Cross Referenced for ExecuteOn.java in  » Build » ANT » org » apache » tools » ant » taskdefs » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Build » ANT » org.apache.tools.ant.taskdefs 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *  Licensed to the Apache Software Foundation (ASF) under one or more
003:         *  contributor license agreements.  See the NOTICE file distributed with
004:         *  this work for additional information regarding copyright ownership.
005:         *  The ASF licenses this file to You under the Apache License, Version 2.0
006:         *  (the "License"); you may not use this file except in compliance with
007:         *  the License.  You may obtain a copy of the License at
008:         *
009:         *      http://www.apache.org/licenses/LICENSE-2.0
010:         *
011:         *  Unless required by applicable law or agreed to in writing, software
012:         *  distributed under the License is distributed on an "AS IS" BASIS,
013:         *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         *  See the License for the specific language governing permissions and
015:         *  limitations under the License.
016:         *
017:         */
018:
019:        package org.apache.tools.ant.taskdefs;
020:
021:        import java.io.File;
022:        import java.io.IOException;
023:        import java.util.Hashtable;
024:        import java.util.Iterator;
025:        import java.util.Vector;
026:        import org.apache.tools.ant.BuildException;
027:        import org.apache.tools.ant.DirectoryScanner;
028:        import org.apache.tools.ant.Project;
029:        import org.apache.tools.ant.types.Commandline;
030:        import org.apache.tools.ant.types.AbstractFileSet;
031:        import org.apache.tools.ant.types.DirSet;
032:        import org.apache.tools.ant.types.EnumeratedAttribute;
033:        import org.apache.tools.ant.types.FileList;
034:        import org.apache.tools.ant.types.FileSet;
035:        import org.apache.tools.ant.types.Mapper;
036:        import org.apache.tools.ant.types.Resource;
037:        import org.apache.tools.ant.types.ResourceCollection;
038:        import org.apache.tools.ant.types.resources.FileResource;
039:        import org.apache.tools.ant.types.resources.Union;
040:        import org.apache.tools.ant.util.FileNameMapper;
041:        import org.apache.tools.ant.util.SourceFileScanner;
042:
043:        /**
044:         * Executes a given command, supplying a set of files as arguments.
045:         *
046:         * @since Ant 1.2
047:         *
048:         * @ant.task category="control" name="apply"
049:         */
050:        public class ExecuteOn extends ExecTask {
051:
052:            // CheckStyle:VisibilityModifier OFF - bc
053:
054:            // filesets has been protected so we need to keep that even after
055:            // switching to resource collections.  In fact, they will still
056:            // get a different treatment form the other resource collections
057:            // even in execute since we have some subtle special features like
058:            // switching type to "dir" when we encounter a DirSet that would
059:            // be more difficult to achieve otherwise.
060:
061:            protected Vector filesets = new Vector(); // contains AbstractFileSet
062:            // (both DirSet and FileSet)
063:            private Union resources = null;
064:            private boolean relative = false;
065:            private boolean parallel = false;
066:            private boolean forwardSlash = false;
067:            protected String type = FileDirBoth.FILE;
068:            protected Commandline.Marker srcFilePos = null;
069:            private boolean skipEmpty = false;
070:            protected Commandline.Marker targetFilePos = null;
071:            protected Mapper mapperElement = null;
072:            protected FileNameMapper mapper = null;
073:            protected File destDir = null;
074:            private int maxParallel = -1;
075:            private boolean addSourceFile = true;
076:            private boolean verbose = false;
077:            private boolean ignoreMissing = true;
078:            private boolean force = false;
079:
080:            /**
081:             * Has <srcfile> been specified before <targetfile>
082:             */
083:            protected boolean srcIsFirst = true;
084:
085:            // CheckStyle:VisibilityModifier ON
086:            /**
087:             * Add a set of files upon which to operate.
088:             * @param set the FileSet to add.
089:             */
090:            public void addFileset(FileSet set) {
091:                filesets.addElement(set);
092:            }
093:
094:            /**
095:             * Add a set of directories upon which to operate.
096:             *
097:             * @param  set the DirSet to add.
098:             *
099:             * @since Ant 1.6
100:             */
101:            public void addDirset(DirSet set) {
102:                filesets.addElement(set);
103:            }
104:
105:            /**
106:             * Add a list of source files upon which to operate.
107:             * @param list the FileList to add.
108:             */
109:            public void addFilelist(FileList list) {
110:                add(list);
111:            }
112:
113:            /**
114:             * Add a collection of resources upon which to operate.
115:             * @param rc resource collection to add.
116:             * @since Ant 1.7
117:             */
118:            public void add(ResourceCollection rc) {
119:                if (resources == null) {
120:                    resources = new Union();
121:                }
122:                resources.add(rc);
123:            }
124:
125:            /**
126:             * Set whether the filenames should be passed on the command line as
127:             * absolute or relative pathnames. Paths are relative to the base
128:             * directory of the corresponding fileset for source files or the
129:             * dest attribute for target files.
130:             * @param relative whether to pass relative pathnames.
131:             */
132:            public void setRelative(boolean relative) {
133:                this .relative = relative;
134:            }
135:
136:            /**
137:             * Set whether to execute in parallel mode.
138:             * If true, run the command only once, appending all files as arguments.
139:             * If false, command will be executed once for every file. Defaults to false.
140:             * @param parallel whether to run in parallel.
141:             */
142:            public void setParallel(boolean parallel) {
143:                this .parallel = parallel;
144:            }
145:
146:            /**
147:             * Set whether the command works only on files, directories or both.
148:             * @param type a FileDirBoth EnumeratedAttribute.
149:             */
150:            public void setType(FileDirBoth type) {
151:                this .type = type.getValue();
152:            }
153:
154:            /**
155:             * Set whether empty filesets will be skipped.  If true and
156:             * no source files have been found or are newer than their
157:             * corresponding target files, the command will not be run.
158:             * @param skip whether to skip empty filesets.
159:             */
160:            public void setSkipEmptyFilesets(boolean skip) {
161:                skipEmpty = skip;
162:            }
163:
164:            /**
165:             * Specify the directory where target files are to be placed.
166:             * @param destDir the File object representing the destination directory.
167:             */
168:            public void setDest(File destDir) {
169:                this .destDir = destDir;
170:            }
171:
172:            /**
173:             * Set whether the source and target file names on Windows and OS/2
174:             * must use the forward slash as file separator.
175:             * @param forwardSlash whether the forward slash will be forced.
176:             */
177:            public void setForwardslash(boolean forwardSlash) {
178:                this .forwardSlash = forwardSlash;
179:            }
180:
181:            /**
182:             * Limit the command line length by passing at maximum this many
183:             * sourcefiles at once to the command.
184:             *
185:             * <p>Set to &lt;= 0 for unlimited - this is the default.</p>
186:             *
187:             * @param max <code>int</code> maximum number of sourcefiles
188:             *            passed to the executable.
189:             *
190:             * @since Ant 1.6
191:             */
192:            public void setMaxParallel(int max) {
193:                maxParallel = max;
194:            }
195:
196:            /**
197:             * Set whether to send the source file name on the command line.
198:             *
199:             * <p>Defaults to <code>true</code>.
200:             *
201:             * @param b whether to add the source file to the command line.
202:             *
203:             * @since Ant 1.6
204:             */
205:            public void setAddsourcefile(boolean b) {
206:                addSourceFile = b;
207:            }
208:
209:            /**
210:             * Set whether to operate in verbose mode.
211:             * If true, a verbose summary will be printed after execution.
212:             * @param b whether to operate in verbose mode.
213:             *
214:             * @since Ant 1.6
215:             */
216:            public void setVerbose(boolean b) {
217:                verbose = b;
218:            }
219:
220:            /**
221:             * Set whether to ignore nonexistent files from filelists.
222:             * @param b whether to ignore missing files.
223:             *
224:             * @since Ant 1.6.2
225:             */
226:            public void setIgnoremissing(boolean b) {
227:                ignoreMissing = b;
228:            }
229:
230:            /**
231:             * Set whether to bypass timestamp comparisons for target files.
232:             * @param b whether to bypass timestamp comparisons.
233:             *
234:             * @since Ant 1.6.3
235:             */
236:            public void setForce(boolean b) {
237:                force = b;
238:            }
239:
240:            /**
241:             * Create a placeholder indicating where on the command line
242:             * the name of the source file should be inserted.
243:             * @return <code>Commandline.Marker</code>.
244:             */
245:            public Commandline.Marker createSrcfile() {
246:                if (srcFilePos != null) {
247:                    throw new BuildException(getTaskType()
248:                            + " doesn\'t support multiple "
249:                            + "srcfile elements.", getLocation());
250:                }
251:                srcFilePos = cmdl.createMarker();
252:                return srcFilePos;
253:            }
254:
255:            /**
256:             * Create a placeholder indicating where on the command line
257:             * the name of the target file should be inserted.
258:             * @return <code>Commandline.Marker</code>.
259:             */
260:            public Commandline.Marker createTargetfile() {
261:                if (targetFilePos != null) {
262:                    throw new BuildException(getTaskType()
263:                            + " doesn\'t support multiple "
264:                            + "targetfile elements.", getLocation());
265:                }
266:                targetFilePos = cmdl.createMarker();
267:                srcIsFirst = (srcFilePos != null);
268:                return targetFilePos;
269:            }
270:
271:            /**
272:             * Create a nested Mapper element to use for mapping
273:             * source files to target files.
274:             * @return <code>Mapper</code>.
275:             * @throws BuildException if more than one mapper is defined.
276:             */
277:            public Mapper createMapper() throws BuildException {
278:                if (mapperElement != null) {
279:                    throw new BuildException(
280:                            "Cannot define more than one mapper", getLocation());
281:                }
282:                mapperElement = new Mapper(getProject());
283:                return mapperElement;
284:            }
285:
286:            /**
287:             * Add a nested FileNameMapper.
288:             * @param fileNameMapper the mapper to add.
289:             * @since Ant 1.6.3
290:             */
291:            public void add(FileNameMapper fileNameMapper) {
292:                createMapper().add(fileNameMapper);
293:            }
294:
295:            /**
296:             * Check the configuration of this ExecuteOn instance.
297:             */
298:            protected void checkConfiguration() {
299:                //     * @TODO using taskName here is brittle, as a user could override it.
300:                //     *       this should probably be modified to use the classname instead.
301:                if ("execon".equals(getTaskName())) {
302:                    log("!! execon is deprecated. Use apply instead. !!");
303:                }
304:                super .checkConfiguration();
305:                if (filesets.size() == 0 && resources == null) {
306:                    throw new BuildException("no resources specified",
307:                            getLocation());
308:                }
309:                if (targetFilePos != null && mapperElement == null) {
310:                    throw new BuildException(
311:                            "targetfile specified without mapper",
312:                            getLocation());
313:                }
314:                if (destDir != null && mapperElement == null) {
315:                    throw new BuildException("dest specified without mapper",
316:                            getLocation());
317:                }
318:                if (mapperElement != null) {
319:                    mapper = mapperElement.getImplementation();
320:                }
321:            }
322:
323:            /**
324:             * Create the ExecuteStreamHandler instance that will be used
325:             * during execution.
326:             * @return <code>ExecuteStreamHandler</code>.
327:             * @throws BuildException on error.
328:             */
329:            protected ExecuteStreamHandler createHandler()
330:                    throws BuildException {
331:                //if we have a RedirectorElement, return a decoy
332:                return (redirectorElement == null) ? super .createHandler()
333:                        : new PumpStreamHandler();
334:            }
335:
336:            /**
337:             * Set up the I/O Redirector.
338:             */
339:            protected void setupRedirector() {
340:                super .setupRedirector();
341:                redirector.setAppendProperties(true);
342:            }
343:
344:            /**
345:             * Run the specified Execute object.
346:             * @param exe the Execute instance representing the external process.
347:             * @throws BuildException on error
348:             */
349:            protected void runExec(Execute exe) throws BuildException {
350:                int totalFiles = 0;
351:                int totalDirs = 0;
352:                boolean haveExecuted = false;
353:                try {
354:                    Vector fileNames = new Vector();
355:                    Vector baseDirs = new Vector();
356:                    for (int i = 0; i < filesets.size(); i++) {
357:                        String currentType = type;
358:                        AbstractFileSet fs = (AbstractFileSet) filesets
359:                                .elementAt(i);
360:                        if (fs instanceof  DirSet) {
361:                            if (!FileDirBoth.DIR.equals(type)) {
362:                                log(
363:                                        "Found a nested dirset but type is "
364:                                                + type
365:                                                + ". "
366:                                                + "Temporarily switching to type=\"dir\" on the"
367:                                                + " assumption that you really did mean"
368:                                                + " <dirset> not <fileset>.",
369:                                        Project.MSG_DEBUG);
370:                                currentType = FileDirBoth.DIR;
371:                            }
372:                        }
373:                        File base = fs.getDir(getProject());
374:
375:                        DirectoryScanner ds = fs
376:                                .getDirectoryScanner(getProject());
377:
378:                        if (!FileDirBoth.DIR.equals(currentType)) {
379:                            String[] s = getFiles(base, ds);
380:                            for (int j = 0; j < s.length; j++) {
381:                                totalFiles++;
382:                                fileNames.addElement(s[j]);
383:                                baseDirs.addElement(base);
384:                            }
385:                        }
386:                        if (!FileDirBoth.FILE.equals(currentType)) {
387:                            String[] s = getDirs(base, ds);
388:                            for (int j = 0; j < s.length; j++) {
389:                                totalDirs++;
390:                                fileNames.addElement(s[j]);
391:                                baseDirs.addElement(base);
392:                            }
393:                        }
394:                        if (fileNames.size() == 0 && skipEmpty) {
395:                            int includedCount = ((!FileDirBoth.DIR
396:                                    .equals(currentType)) ? ds
397:                                    .getIncludedFilesCount() : 0)
398:                                    + ((!FileDirBoth.FILE.equals(currentType)) ? ds
399:                                            .getIncludedDirsCount()
400:                                            : 0);
401:
402:                            log("Skipping fileset for directory "
403:                                    + base
404:                                    + ". It is "
405:                                    + ((includedCount > 0) ? "up to date."
406:                                            : "empty."), Project.MSG_INFO);
407:                            continue;
408:                        }
409:                        if (!parallel) {
410:                            String[] s = new String[fileNames.size()];
411:                            fileNames.copyInto(s);
412:                            for (int j = 0; j < s.length; j++) {
413:                                String[] command = getCommandline(s[j], base);
414:                                log(Commandline.describeCommand(command),
415:                                        Project.MSG_VERBOSE);
416:                                exe.setCommandline(command);
417:
418:                                if (redirectorElement != null) {
419:                                    setupRedirector();
420:                                    redirectorElement.configure(redirector,
421:                                            s[j]);
422:                                }
423:                                if (redirectorElement != null || haveExecuted) {
424:                                    // need to reset the stream handler to restart
425:                                    // reading of pipes;
426:                                    // go ahead and do it always w/ nested redirectors
427:                                    exe.setStreamHandler(redirector
428:                                            .createHandler());
429:                                }
430:                                runExecute(exe);
431:                                haveExecuted = true;
432:                            }
433:                            fileNames.removeAllElements();
434:                            baseDirs.removeAllElements();
435:                        }
436:                    }
437:
438:                    if (resources != null) {
439:                        Iterator iter = resources.iterator();
440:                        while (iter.hasNext()) {
441:                            Resource res = (Resource) iter.next();
442:
443:                            if (!res.isExists() && ignoreMissing) {
444:                                continue;
445:                            }
446:
447:                            File base = null;
448:                            String name = res.getName();
449:                            if (res instanceof  FileResource) {
450:                                FileResource fr = (FileResource) res;
451:                                base = fr.getBaseDir();
452:                                if (base == null) {
453:                                    name = fr.getFile().getAbsolutePath();
454:                                }
455:                            }
456:
457:                            if (restrict(new String[] { name }, base).length == 0) {
458:                                continue;
459:                            }
460:
461:                            if ((!res.isDirectory() || !res.isExists())
462:                                    && !FileDirBoth.DIR.equals(type)) {
463:                                totalFiles++;
464:                            } else if (res.isDirectory()
465:                                    && !FileDirBoth.FILE.equals(type)) {
466:                                totalDirs++;
467:                            } else {
468:                                continue;
469:                            }
470:
471:                            baseDirs.add(base);
472:                            fileNames.add(name);
473:
474:                            if (!parallel) {
475:                                String[] command = getCommandline(name, base);
476:                                log(Commandline.describeCommand(command),
477:                                        Project.MSG_VERBOSE);
478:                                exe.setCommandline(command);
479:
480:                                if (redirectorElement != null) {
481:                                    setupRedirector();
482:                                    redirectorElement.configure(redirector,
483:                                            name);
484:                                }
485:                                if (redirectorElement != null || haveExecuted) {
486:                                    // need to reset the stream handler to restart
487:                                    // reading of pipes;
488:                                    // go ahead and do it always w/ nested redirectors
489:                                    exe.setStreamHandler(redirector
490:                                            .createHandler());
491:                                }
492:                                runExecute(exe);
493:                                haveExecuted = true;
494:                                fileNames.removeAllElements();
495:                                baseDirs.removeAllElements();
496:                            }
497:                        }
498:                    }
499:                    if (parallel && (fileNames.size() > 0 || !skipEmpty)) {
500:                        runParallel(exe, fileNames, baseDirs);
501:                        haveExecuted = true;
502:                    }
503:                    if (haveExecuted) {
504:                        log("Applied " + cmdl.getExecutable() + " to "
505:                                + totalFiles + " file"
506:                                + (totalFiles != 1 ? "s" : "") + " and "
507:                                + totalDirs + " director"
508:                                + (totalDirs != 1 ? "ies" : "y") + ".",
509:                                verbose ? Project.MSG_INFO
510:                                        : Project.MSG_VERBOSE);
511:                    }
512:                } catch (IOException e) {
513:                    throw new BuildException("Execute failed: " + e, e,
514:                            getLocation());
515:                } finally {
516:                    // close the output file if required
517:                    logFlush();
518:                    redirector.setAppendProperties(false);
519:                    redirector.setProperties();
520:                }
521:            }
522:
523:            /**
524:             * Construct the command line for parallel execution.
525:             *
526:             * @param srcFiles The filenames to add to the commandline.
527:             * @param baseDirs filenames are relative to this dir.
528:             * @return the command line in the form of a String[].
529:             */
530:            protected String[] getCommandline(String[] srcFiles, File[] baseDirs) {
531:                final char fileSeparator = File.separatorChar;
532:                Vector targets = new Vector();
533:                if (targetFilePos != null) {
534:                    Hashtable addedFiles = new Hashtable();
535:                    for (int i = 0; i < srcFiles.length; i++) {
536:                        String[] subTargets = mapper.mapFileName(srcFiles[i]);
537:                        if (subTargets != null) {
538:                            for (int j = 0; j < subTargets.length; j++) {
539:                                String name = null;
540:                                if (!relative) {
541:                                    name = (new File(destDir, subTargets[j]))
542:                                            .getAbsolutePath();
543:                                } else {
544:                                    name = subTargets[j];
545:                                }
546:                                if (forwardSlash && fileSeparator != '/') {
547:                                    name = name.replace(fileSeparator, '/');
548:                                }
549:                                if (!addedFiles.contains(name)) {
550:                                    targets.addElement(name);
551:                                    addedFiles.put(name, name);
552:                                }
553:                            }
554:                        }
555:                    }
556:                }
557:                String[] targetFiles = new String[targets.size()];
558:                targets.copyInto(targetFiles);
559:
560:                if (!addSourceFile) {
561:                    srcFiles = new String[0];
562:                }
563:                String[] orig = cmdl.getCommandline();
564:                String[] result = new String[orig.length + srcFiles.length
565:                        + targetFiles.length];
566:
567:                int srcIndex = orig.length;
568:                if (srcFilePos != null) {
569:                    srcIndex = srcFilePos.getPosition();
570:                }
571:                if (targetFilePos != null) {
572:                    int targetIndex = targetFilePos.getPosition();
573:
574:                    if (srcIndex < targetIndex
575:                            || (srcIndex == targetIndex && srcIsFirst)) {
576:
577:                        // 0 --> srcIndex
578:                        System.arraycopy(orig, 0, result, 0, srcIndex);
579:
580:                        // srcIndex --> targetIndex
581:                        System.arraycopy(orig, srcIndex, result, srcIndex
582:                                + srcFiles.length, targetIndex - srcIndex);
583:
584:                        // targets are already absolute file names
585:                        System.arraycopy(targetFiles, 0, result, targetIndex
586:                                + srcFiles.length, targetFiles.length);
587:
588:                        // targetIndex --> end
589:                        System.arraycopy(orig, targetIndex, result, targetIndex
590:                                + srcFiles.length + targetFiles.length,
591:                                orig.length - targetIndex);
592:                    } else {
593:                        // 0 --> targetIndex
594:                        System.arraycopy(orig, 0, result, 0, targetIndex);
595:
596:                        // targets are already absolute file names
597:                        System.arraycopy(targetFiles, 0, result, targetIndex,
598:                                targetFiles.length);
599:
600:                        // targetIndex --> srcIndex
601:                        System.arraycopy(orig, targetIndex, result, targetIndex
602:                                + targetFiles.length, srcIndex - targetIndex);
603:
604:                        // srcIndex --> end
605:                        System.arraycopy(orig, srcIndex, result, srcIndex
606:                                + srcFiles.length + targetFiles.length,
607:                                orig.length - srcIndex);
608:                        srcIndex += targetFiles.length;
609:                    }
610:
611:                } else { // no targetFilePos
612:
613:                    // 0 --> srcIndex
614:                    System.arraycopy(orig, 0, result, 0, srcIndex);
615:                    // srcIndex --> end
616:                    System.arraycopy(orig, srcIndex, result, srcIndex
617:                            + srcFiles.length, orig.length - srcIndex);
618:                }
619:                // fill in source file names
620:                for (int i = 0; i < srcFiles.length; i++) {
621:                    if (!relative) {
622:                        result[srcIndex + i] = (new File(baseDirs[i],
623:                                srcFiles[i])).getAbsolutePath();
624:                    } else {
625:                        result[srcIndex + i] = srcFiles[i];
626:                    }
627:                    if (forwardSlash && fileSeparator != '/') {
628:                        result[srcIndex + i] = result[srcIndex + i].replace(
629:                                fileSeparator, '/');
630:                    }
631:                }
632:                return result;
633:            }
634:
635:            /**
636:             * Construct the command line for serial execution.
637:             *
638:             * @param srcFile The filename to add to the commandline.
639:             * @param baseDir filename is relative to this dir.
640:             * @return the command line in the form of a String[].
641:             */
642:            protected String[] getCommandline(String srcFile, File baseDir) {
643:                return getCommandline(new String[] { srcFile },
644:                        new File[] { baseDir });
645:            }
646:
647:            /**
648:             * Return the list of files from this DirectoryScanner that should
649:             * be included on the command line.
650:             * @param baseDir the File base directory.
651:             * @param ds the DirectoryScanner to use for file scanning.
652:             * @return a String[] containing the filenames.
653:             */
654:            protected String[] getFiles(File baseDir, DirectoryScanner ds) {
655:                return restrict(ds.getIncludedFiles(), baseDir);
656:            }
657:
658:            /**
659:             * Return the list of Directories from this DirectoryScanner that
660:             * should be included on the command line.
661:             * @param baseDir the File base directory.
662:             * @param ds the DirectoryScanner to use for file scanning.
663:             * @return a String[] containing the directory names.
664:             */
665:            protected String[] getDirs(File baseDir, DirectoryScanner ds) {
666:                return restrict(ds.getIncludedDirectories(), baseDir);
667:            }
668:
669:            /**
670:             * Return the list of files or directories from this FileList that
671:             * should be included on the command line.
672:             * @param list the FileList to check.
673:             * @return a String[] containing the directory names.
674:             *
675:             * @since Ant 1.6.2
676:             */
677:            protected String[] getFilesAndDirs(FileList list) {
678:                return restrict(list.getFiles(getProject()), list
679:                        .getDir(getProject()));
680:            }
681:
682:            private String[] restrict(String[] s, File baseDir) {
683:                return (mapper == null || force) ? s : new SourceFileScanner(
684:                        this ).restrict(s, baseDir, destDir, mapper);
685:            }
686:
687:            /**
688:             * Run the command in "parallel" mode, making sure that at most
689:             * maxParallel sourcefiles get passed on the command line.
690:             * @param exe the Executable to use.
691:             * @param fileNames the Vector of filenames.
692:             * @param baseDirs the Vector of base directories corresponding to fileNames.
693:             * @throws IOException  on I/O errors.
694:             * @throws BuildException on other errors.
695:             * @since Ant 1.6
696:             */
697:            protected void runParallel(Execute exe, Vector fileNames,
698:                    Vector baseDirs) throws IOException, BuildException {
699:                String[] s = new String[fileNames.size()];
700:                fileNames.copyInto(s);
701:                File[] b = new File[baseDirs.size()];
702:                baseDirs.copyInto(b);
703:
704:                if (maxParallel <= 0 || s.length == 0 /* this is skipEmpty == false */) {
705:                    String[] command = getCommandline(s, b);
706:                    log(Commandline.describeCommand(command),
707:                            Project.MSG_VERBOSE);
708:                    exe.setCommandline(command);
709:                    runExecute(exe);
710:                } else {
711:                    int stillToDo = fileNames.size();
712:                    int currentOffset = 0;
713:                    while (stillToDo > 0) {
714:                        int currentAmount = Math.min(stillToDo, maxParallel);
715:                        String[] cs = new String[currentAmount];
716:                        System
717:                                .arraycopy(s, currentOffset, cs, 0,
718:                                        currentAmount);
719:                        File[] cb = new File[currentAmount];
720:                        System
721:                                .arraycopy(b, currentOffset, cb, 0,
722:                                        currentAmount);
723:                        String[] command = getCommandline(cs, cb);
724:                        log(Commandline.describeCommand(command),
725:                                Project.MSG_VERBOSE);
726:                        exe.setCommandline(command);
727:                        if (redirectorElement != null) {
728:                            setupRedirector();
729:                            redirectorElement.configure(redirector, null);
730:                        }
731:                        if (redirectorElement != null || currentOffset > 0) {
732:                            // need to reset the stream handler to restart
733:                            // reading of pipes;
734:                            // go ahead and do it always w/ nested redirectors
735:                            exe.setStreamHandler(redirector.createHandler());
736:                        }
737:                        runExecute(exe);
738:
739:                        stillToDo -= currentAmount;
740:                        currentOffset += currentAmount;
741:                    }
742:                }
743:            }
744:
745:            /**
746:             * Enumerated attribute with the values "file", "dir" and "both"
747:             * for the type attribute.
748:             */
749:            public static class FileDirBoth extends EnumeratedAttribute {
750:                /** File value */
751:                public static final String FILE = "file";
752:                /** Dir value */
753:                public static final String DIR = "dir";
754:
755:                /**
756:                 * @see EnumeratedAttribute#getValues
757:                 */
758:                /** {@inheritDoc}. */
759:                public String[] getValues() {
760:                    return new String[] { FILE, DIR, "both" };
761:                }
762:            }
763:        }
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