1 /*
2 * Copyright 2007-2008 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package sun.module.tools;
27
28 import java.io.BufferedReader;
29 import java.io.File;
30 import java.io.FileNotFoundException;
31 import java.io.IOException;
32 import java.io.InputStreamReader;
33 import java.io.PrintStream;
34 import java.io.PrintWriter;
35 import java.io.StringWriter;
36 import java.net.MalformedURLException;
37 import java.net.URI;
38 import java.net.URL;
39 import java.net.URISyntaxException;
40 import java.module.*;
41 import java.security.AccessController;
42 import java.text.DateFormat;
43 import java.util.Arrays;
44 import java.util.ArrayList;
45 import java.util.Date;
46 import java.util.HashMap;
47 import java.util.LinkedHashMap;
48 import java.util.List;
49 import java.util.Map;
50 import sun.module.JamUtils;
51 import sun.module.repository.RepositoryConfig;
52 import sun.security.action.GetPropertyAction;
53 import sun.tools.jar.CommandLine;
54
55 /**
56 * Java Modules Repository Management Tool
57 * @since 1.7
58 */
59 public class JRepo {
60 public static final boolean DEBUG;
61
62 static {
63 DEBUG = (AccessController.doPrivileged(new GetPropertyAction("sun.module.tools.debug")) != null);
64 }
65
66 private static void debug(String s) {
67 System.err.println(s);
68 }
69
70 /** For printing user output. */
71 private final Messenger msg;
72
73 /** Optional command line argument used by {@code list()}. */
74 private String moduleName;
75
76 /** Map from this tool's command names to the commands themselves. */
77 private static final Map<String, Command> commands = new LinkedHashMap<String, Command>();
78
79 /** Usage message created from each command's usage. */
80 private static String usage = null;
81
82 /** Format for module name & version. */
83 private static final String MAIFormat = "%-20s %-20s";
84
85 /** Format for additional/verbose module information. */
86 private static final String MAIFormatVerbose = " %-9s %-7s %-17s %s";
87
88 /** String containing column headings for name & version. */
89 private static final String maiHeading;
90
91 /** String containing column headings for additional/verbose module information. */
92 private static final String maiHeadingVerbose;
93
94 /** Indicates that parent repositories should be used by a command. */
95 private static final Flag parentFlag = new Flag('p');
96
97 /** Indicates that command output should be verbose. */
98 private static final Flag verboseFlag = new Flag('v');
99
100 /** Location of repository; if not given uses system repository. */
101 private static final RepositoryFlag repositoryFlag = new RepositoryFlag();
102
103 /** Contains the flags that are common to all commands. */
104 private static final HashMap<Character, Flag> commonFlags = new HashMap<Character, Flag>();
105
106 static {
107 repositoryFlag.register(commonFlags);
108 verboseFlag.register(commonFlags);
109
110 StringWriter sw = new StringWriter();
111 PrintWriter pw = new PrintWriter(sw);
112 pw.printf(MAIFormat, "Name", "Version"); // XXX i18n
113 maiHeading = sw.toString();
114
115 sw = new StringWriter();
116 pw = new PrintWriter(sw);
117 pw.printf(MAIFormat, "Name", "Version"); // XXX i18n
118 pw.printf(MAIFormatVerbose, "Platform", "Arch", "Modified", "Filename"); // XXX i18n
119 maiHeadingVerbose = sw.toString();
120 }
121
122 public JRepo(PrintStream out, PrintStream err, BufferedReader reader) {
123 msg = new Messenger("jrepo", out, err, reader);
124 synchronized(commands) {
125 if (commands.isEmpty()) {
126 new ListCommand().register(commands);
127 new InstallCommand().register(commands);
128 new UninstallCommand().register(commands);
129 }
130 }
131 reset();
132 }
133
134 public static void main(String[] args) {
135 JRepo jrepo = new JRepo(
136 System.out, System.err,
137 new BufferedReader(new InputStreamReader(System.in)));
138 System.exit(jrepo.run(args) ? 0 : 1);
139 }
140
141 public synchronized boolean run(String[] args) {
142 reset();
143
144 if (DEBUG) { for (String s : args) debug("arg: '" + s + "'"); }
145 Command cmd = parseArgs(args);
146 if (DEBUG && cmd != null) debug("running " + cmd);
147 if (cmd == null) {
148 return false;
149 }
150
151 Repository repo = null;
152 try {
153 repo = getRepository();
154 repo.shutdownOnExit(true);
155 } catch (IOException ex) {
156 msg.fatalError(ex.getMessage());
157 return false;
158 }
159
160 boolean rc = cmd.run(repo, msg);
161 if (DEBUG) debug(cmd + " returned " + rc);
162 return rc;
163
164 }
165
166 /**
167 * Gets the repository based on command line flags.
168 * @return Reposistory based on the value from {@code repositoryFlag} if
169 * that is non-null, else the system repository.
170 */
171 private Repository getRepository() throws IOException {
172 Repository rc = null;
173
174 String repositoryLocation = repositoryFlag.getLocation();
175
176 if (repositoryLocation == null) {
177 rc = Repository.getSystemRepository();
178 } else {
179 // If repositoryLocation is a URL use URLRepository else LocalRepository.
180 try {
181 URL u = new URL(repositoryLocation);
182 rc = Modules.newURLRepository(
183 "jrepo", u, null, RepositoryConfig.getSystemRepository());
184 } catch (MalformedURLException ex) {
185 File f = new File(repositoryLocation);
186 if (f.exists() && f.canRead()) {
187 rc = Modules.newLocalRepository(
188 "jrepo",
189 f.getCanonicalFile(), null,
190 RepositoryConfig.getSystemRepository());
191 } else {
192 throw new IOException("Cannot access repository at " + repositoryLocation);
193 }
194 }
195 }
196 return rc;
197 }
198
199 /** Reset instance state to default values. */
200 private void reset() {
201 moduleName = null;
202 parentFlag.reset();
203 repositoryFlag.reset();
204 verboseFlag.reset();
205 for (Command cmd : commands.values()) {
206 cmd.reset();
207 }
208 }
209
210
211 /** Parse command line arguments.*/
212 private Command parseArgs(String[] args) {
213 /* Preprocess and expand @file arguments */
214 try {
215 args = CommandLine.parse(args);
216 } catch (FileNotFoundException e) {
217 msg.fatalError(msg.formatMsg("error.cant.open", e.getMessage()));
218 return null;
219 } catch (IOException e) {
220 msg.fatalError(msg.formatMsg("caught.exception", e.getMessage()));
221 return null;
222 }
223
224 if (args.length < 1) {
225 usageError();
226 return null;
227 }
228
229 Command cmd = null;
230 for (Map.Entry<String, Command> entry : commands.entrySet()) {
231 if (entry.getKey().startsWith(args[0])) {
232 cmd = entry.getValue();
233 break;
234 }
235 }
236 if (DEBUG) debug("found command " + cmd);
237 if (cmd == null) {
238 usageError();
239 return null;
240 }
241
242 try {
243 int numFlags = cmd.parseFlags(args, commonFlags);
244 args = Arrays.copyOfRange(args, numFlags + 1, args.length);
245 try {
246 if (cmd.parseArgs(args, msg)) {
247 return cmd;
248 } else {
249 usageError();
250 return null;
251 }
252 } catch (ArrayIndexOutOfBoundsException e) {
253 usageError();
254 }
255 } catch (IllegalArgumentException ex) {
256 msg.error(ex.getMessage());
257 usageError();
258 return null;
259 }
260 return cmd;
261 }
262
263
264 /** Returns a user-grokkable description of the repository. */
265 private String getRepositoryText(Repository repo) {
266 String rc;
267 URI u = repo.getSourceLocation();
268 if (u == null) {
269 rc = "Bootstrap repository";
270 } else {
271 try {
272 rc = "Repository " + u.toURL().toExternalForm();
273 } catch (MalformedURLException ex) {
274 rc = "Repository unknown";
275 }
276 }
277 return rc;
278 }
279
280 private String getMAIText(ModuleArchiveInfo mai) {
281 StringWriter sw = new StringWriter();
282 PrintWriter pw = new PrintWriter(sw);
283 pw.printf(MAIFormat, mai.getName(), mai.getVersion());
284 if (verboseFlag.isEnabled()) {
285 long t = mai.getLastModified();
286 String lastMod = null;
287 if (t != 0) {
288 lastMod = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT).format(new Date(t));
289 }
290 pw.printf(MAIFormatVerbose,
291 mai.getPlatform() == null ? "generic" : mai.getPlatform(),
292 mai.getArch() == null ? "generic" : mai.getArch(),
293 lastMod == null ? "n/a" : lastMod,
294 mai.getFileName() == null ? "n/a" : mai.getFileName()
295 );
296 }
297 return sw.toString();
298 }
299
300 void usageError() {
301 usageError(msg);
302 }
303
304 static void usageError(Messenger msg) {
305 if (usage == null) {
306 StringBuilder ub = new StringBuilder(
307 "Usage: jrepo <command>\nwhere <command> includes:");
308 for (Command c : commands.values()) {
309 String u = c.usage();
310 if (u != null) {
311 ub.append("\n ").append(c.usage());
312 }
313 }
314 usage = ub.toString();
315 }
316 msg.error(usage);
317 }
318
319 /**
320 * Represents a flag given on the command line. Flags always are 2
321 * characters long, and start with a '-'. They can have additional
322 * associated arguments (cf RepositoryFlag).
323 */
324 private static class Flag {
325 private final char name;
326
327 private boolean enabled = false;
328
329 private static final Map<Character, Flag> flags = new HashMap<Character, Flag>();
330
331 Flag(char name) {
332 this.name = name;
333 flags.put(new Character(name), this);
334 }
335
336 void register(Map<Character, Flag> registry) {
337 registry.put(new Character(name), this);
338 }
339
340 char getName() {
341 return name;
342 }
343
344 /** @return the number of arguments consumed by this Flag. */
345 int set(String[] args, int pos) {
346 enabled = true;
347 return 1;
348 }
349
350 void reset() {
351 enabled = false;
352 }
353
354 boolean isEnabled() {
355 return enabled;
356 }
357
358 static Flag get(char c) {
359 return flags.get(new Character(c));
360 }
361 }
362
363 private static class RepositoryFlag extends Flag {
364 String location = null;
365
366 RepositoryFlag() {
367 super('r');
368 }
369
370 int set(String[] args, int pos) {
371 int rc = super.set(args, pos);
372 location = args[pos + 1];
373 return rc + 1;
374 }
375
376 String getLocation() {
377 return location;
378 }
379
380 void reset() {
381 super.reset();
382 location = null;
383 }
384 }
385
386 /*
387 * Command types: An abstract base class, plus one concrete class for
388 * each Command.
389 */
390
391 /*
392 * Represents a Command.
393 */
394 private static abstract class Command {
395 private final String name;
396
397 Command(String name) {
398 this.name = name;
399 }
400
401 /** Adds this command to the given registry. */
402 void register(Map<String, Command> registry) {
403 registry.put(name, this);
404 }
405
406 void reset() {
407 // Empty; subclasses can implement
408 }
409
410 // Flags differ from arguments in that they have the form "-X [opt]".
411 // Flags appear in a command line before arguments.
412
413 /** Parses the arguments particular to this command. */
414 abstract boolean parseArgs(String[] args, Messenger msg);
415
416 /**
417 * Parse the Flags for this command.
418 * @return number of flags found.
419 * @throws IllegalArgumentException if an invalid flag is given.
420 */
421 int parseFlags(String[] args, Map<Character, Flag> flags) {
422 int rc = 0;
423 int i = 0;
424 while (i < args.length) {
425 String s = args[i];
426 if (s.length() == 2 && s.charAt(0) == '-') {
427 Flag f = flags.get(s.charAt(1));
428 if (f != null) {
429 int numConsumed = f.set(args, i);
430 i += numConsumed; // Increases at each iteration.
431 rc += numConsumed; // Increases only when the arg is a flag.
432 } else {
433 throw new IllegalArgumentException("unrecognized flag: " + args[i]);
434 }
435 } else {
436 i++;
437 }
438 }
439 return rc;
440 }
441
442 /** Represents the actual behavior of the command. */
443 abstract boolean run(Repository repo, Messenger msg);
444
445 /** Returns a usage string describing this command, or null if the
446 * command is a synonym for another command.
447 */
448 abstract String usage();
449
450 public String toString() { return name; }
451
452 /**
453 * RepositoryVisitor types walk a parent chain of repositories, invoking
454 * {@code doit} in each one. The abstract base class provides the recursion;
455 * each concrete subclass provides the per-repository behavior. The
456 * recursion is such that the bootstrap repository is visited first,
457 * and the system repository is last.
458 */
459 abstract class RepositoryVisitor {
460 abstract void doit(Repository repo, Messenger msg);
461
462 void doBefore(Messenger msg) { }
463
464 void doAfter(Messenger msg) { }
465
466 final void run(Repository repo, Messenger msg) {
467 visit(repo, msg);
468 }
469
470 private final void visit(Repository repo, Messenger msg) {
471 Repository parent = parentFlag.isEnabled() ? repo.getParent() : null;
472 if (parent != null) {
473 visit(parent, msg);
474 }
475 doBefore(msg);
476 doit(repo, msg);
477 doAfter(msg);
478 }
479 }
480 }
481
482 /** Installs a JAM into a repository. */
483 private class InstallCommand extends Command {
484 private String jamName;
485
486 InstallCommand() {
487 super("install");
488 }
489
490 boolean parseArgs(String[] args, Messenger msg) {
491 boolean rc = false;
492 if (!parentFlag.isEnabled()
493 && repositoryFlag.getLocation() != null
494 && args.length == 1) {
495 jamName = args[0];
496 rc = true;
497 }
498 return rc;
499 }
500
501 boolean run(Repository repo, Messenger msg) {
502 if (repo != null) {
503 String jamURL = null;
504 File f = new File(jamName);
505 if (f.canRead()) {
506 try {
507 String path = f.getCanonicalPath();
508 // Ensure that path starts with a "/" (it does not on
509 // some systems, e.g. Windows).
510 if (!path.startsWith("/")) {
511 path = "/" + path;
512 }
513 jamURL = "file://" + path;
514 } catch (IOException ex) {
515 msg.error("Cannot install " + jamName + ": " + ex.getMessage());
516 return false;
517 }
518 } else {
519 jamURL = jamName;
520 }
521 try {
522 ModuleArchiveInfo mai = repo.install(new URL(jamURL).toURI());
523 if (verboseFlag.isEnabled()) {
524 msg.println("Installed " + jamName + ": " + getMAIText(mai));
525 }
526 return true;
527 } catch (URISyntaxException ex) {
528 msg.error("Cannot install " + jamName + ": no such file, or malformed URI");
529 } catch (MalformedURLException ex) {
530 msg.error("Cannot install " + jamName + ": no such file, or malformed URL");
531 } catch (IOException ex) {
532 msg.error("Cannot install " + jamName + ": " + ex.getMessage());
533 }
534 }
535 return false;
536 }
537
538 String usage() {
539 return "install [-v] -r repositoryLocation jamFile | jamURL\n"
540 + " installs a module into a repository";
541 }
542 }
543
544 /** Uninstalls a module from a repository. */
545 private class UninstallCommand extends Command {
546 @SuppressWarnings("unchecked")
547 private final Map<Character, Flag> myFlags = (Map<Character, Flag>) commonFlags.clone();
548
549 private Flag forceFlag = new Flag('f');
550
551 private Flag interactiveFlag = new Flag('i');
552
553 private String moduleName;
554
555 private Version version;
556
557 private String platformBinding;
558
559 UninstallCommand() {
560 super("uninstall");
561 forceFlag.register(myFlags);
562 interactiveFlag.register(myFlags);
563 }
564
565 void reset() {
566 version = null;
567 platformBinding = null;
568 forceFlag.reset();
569 interactiveFlag.reset();
570 }
571
572 int parseFlags(String[] args, Map<Character, Flag> flags) {
573 return super.parseFlags(args, myFlags);
574 }
575
576 boolean parseArgs(String[] args, Messenger msg) {
577 if (repositoryFlag.getLocation() == null) {
578 return false;
579 }
580
581 if (forceFlag.isEnabled() && interactiveFlag.isEnabled()) {
582 // Doesn't make sense for these to both be enabled
583 msg.error("uninstall cannot simultaneously use both -i and -f: choose one or the other"); // XXX i81n
584 return false;
585 }
586
587 if (args.length >= 1) {
588 moduleName = args[0];
589 if (args.length >= 2 && args.length < 4) {
590 try {
591 version = Version.valueOf(args[1]);
592 } catch (IllegalArgumentException ex) {
593 msg.error(ex.getMessage());
594 return false;
595 }
596 }
597 if (args.length == 3) {
598 platformBinding = args[2];
599 }
600 return true;
601 } else {
602 return false;
603 }
604 }
605
606 boolean run(Repository repo, Messenger msg) {
607 boolean rc = false;
608
609 if (DEBUG) debug(
610 "force=" + forceFlag.isEnabled()
611 + " interactive=" + interactiveFlag.isEnabled()
612 + " verbose=" + verboseFlag.isEnabled()
613 + " repository=" + repositoryFlag.getLocation()
614 + " moduleName=" + moduleName
615 + " version=" + version
616 + " plat/arch=" + platformBinding);
617
618 List<ModuleArchiveInfo> found = new ArrayList<ModuleArchiveInfo>();
619 for (ModuleArchiveInfo mai : repo.list()) {
620 if (match(mai)) {
621 found.add(mai);
622 }
623 }
624 if (DEBUG) debug("found.size=" + found.size());
625 if (found.size() == 1) {
626 ModuleArchiveInfo mai = found.get(0);
627 rc = uninstall(repo, mai, msg);
628 } else if (found.size() == 0) {
629 if (verboseFlag.isEnabled()) {
630 msg.error("Could not find a module matching " + getInfo());
631 }
632 } else { // multiple matches
633 if (!forceFlag.isEnabled() && !interactiveFlag.isEnabled()) {
634 msg.error("Cannot uninstall: multiple modules match " + getInfo());
635 if (verboseFlag.isEnabled()) {
636 for (ModuleArchiveInfo mai : found) {
637 msg.error(getMAIText(mai));
638 }
639 }
640 } else if (forceFlag.isEnabled()) {
641 if (DEBUG) debug("forced uninstall of multiple matches");
642 rc = true;
643 for (ModuleArchiveInfo mai : found) {
644 if (!uninstall(repo, mai, msg)) {
645 if (DEBUG) debug("uninstall failed for " + getMAIText(mai) + " in " + repo.getSourceLocation());
646 rc = false;
647 break;
648 }
649 }
650 } else if (interactiveFlag.isEnabled()) {
651 rc = uninstallInteractive(repo, found, msg);
652 }
653 }
654 return rc;
655 }
656
657 String usage() {
658 return "uninstall [-v] [-f | -i] -r repositoryLocation moduleName [moduleVersion] [modulePlatformBinding]\n"
659 + " removes a module from a repository, along with associated files.";
660 }
661
662 /** Uninstall the ModuleArchiveInfo from the Repository. */
663 private boolean uninstall(Repository repo, ModuleArchiveInfo mai, Messenger msg) {
664 boolean rc = false;
665 if (DEBUG) debug("Uninstalling " + getMAIText(mai));
666 try {
667 rc = repo.uninstall(mai);
668 if (verboseFlag.isEnabled()) {
669 if (rc) {
670 msg.println("Uninstalled " + getMAIText(mai));
671 } else {
672 msg.error("Failed to uninstall " + getMAIText(mai));
673 }
674 }
675 } catch (Exception ex) {
676 msg.error("Exception while uninstalling " + getInfo()
677 + ": " + ex.getMessage());
678 }
679 return rc;
680 }
681
682 /** Uninstall one of the ModuleArchiveInfos from the Repository. */
683 private boolean uninstallInteractive(
684 Repository repo,
685 List<ModuleArchiveInfo> found,
686 Messenger msg) {
687 boolean rc = false;
688
689 String spaces = " ";
690 String fmt = "%" + found.size() + "d %s\n";
691
692 StringWriter sw = new StringWriter();
693 PrintWriter pw = new PrintWriter(sw);
694 pw.println("Multiple matches for module found. Choose one of the below by index:");
695 boolean saveVerbose = verboseFlag.isEnabled();
696 verboseFlag.set(new String[0], 0);
697 int count = 0;
698 for (ModuleArchiveInfo m : found) {
699 pw.printf(fmt, count++, getMAIText(m));
700 }
701 pw.print("\nIndex? ");
702 pw.close();
703 String choiceMessage = sw.toString();
704 boolean done = false;
705 while (!done) {
706 msg.print(choiceMessage);
707 String input = null;
708 try {
709 input = msg.readLine().trim();
710 int index = Integer.parseInt(input);
711 if (index >= 0 && index < found.size()) {
712 uninstall(repo, found.get(index), msg);
713 done = true;
714 rc = true;
715 } else {
716 msg.error("Invalid input " + input + "; try again");
717 }
718 } catch (NumberFormatException ex) {
719 msg.error("Invalid input '" + input + "'; try again");
720 } catch (Exception ex) {
721 if (DEBUG) debug("msg.readLine threw " + ex);
722 done = true;
723 }
724 }
725
726 // Restore if necessary.
727 if (!saveVerbose) {
728 verboseFlag.reset();
729 }
730
731 return rc;
732 }
733
734 /**
735 * @return true iff moduleName matches mai.getName(), and if version
736 * and platformBinding are set, they also match.
737 */
738 private boolean match(ModuleArchiveInfo mai) {
739 boolean rc = false;
740 if (DEBUG) debug("attempting to match " + getMAIText(mai));
741 if (moduleName.equals(mai.getName())) {
742 if (version == null) {
743 rc = true;
744 } else if (version.equals(mai.getVersion())) {
745 if (platformBinding == null) {
746 rc = true;
747 } else {
748 String pb = mai.getPlatform() + "-" + mai.getArch();
749 if (platformBinding.equals(pb)) {
750 rc = true;
751 }
752 }
753 }
754 }
755 return rc;
756 }
757
758 private String getInfo() {
759 String s = moduleName;
760 if (version != null) {
761 s += " with version " + version;
762 }
763 if (platformBinding != null) {
764 s += " and platform-binding of " + platformBinding;
765 }
766 return s;
767 }
768 }
769
770 /** Prints information about modules found in repositories. */
771 private class ListCommand extends Command {
772 @SuppressWarnings("unchecked")
773 private final Map<Character, Flag> myFlags = (Map<Character, Flag>) commonFlags.clone();
774
775 ListCommand() {
776 super("list");
777 parentFlag.register(myFlags);
778 }
779
780 void reset() {
781 parentFlag.reset();
782 }
783
784 int parseFlags(String[] args, Map<Character, Flag> flags) {
785 return super.parseFlags(args, myFlags);
786 }
787
788 boolean parseArgs(String[] args, Messenger msg){
789 boolean rc = true;
790 if (args.length == 0) {
791 moduleName = null;
792 } else if (args.length == 1) {
793 moduleName = args[0];
794 } else {
795 rc = false;
796 }
797 return rc;
798 }
799
800 boolean run(Repository repo, Messenger msg) {
801 ListRepositoryVisitor visitor = new ListRepositoryVisitor();
802 visitor.run(repo, msg);
803 boolean found = visitor.wasFound();
804 if (verboseFlag.isEnabled() && !found) {
805 if (moduleName != null) {
806 msg.error("Could not find module name starting with '" + moduleName + "'");
807 } else {
808 msg.error("Could not find any modules");
809 }
810 }
811 return found;
812 }
813
814 String usage() {
815 return "list [-v] [-p] [-r repositoryLocation] moduleName\n"
816 + " lists the modules in the repository";
817 }
818
819 class ListRepositoryVisitor extends RepositoryVisitor {
820 private boolean found = false;
821
822 boolean wasFound() { return found; }
823
824 void doit(Repository repo, Messenger msg) {
825 boolean printedHeader = false;
826 for (ModuleArchiveInfo mai : repo.list()) {
827 if (moduleName == null || mai.getName().startsWith(moduleName)) {
828 if (!printedHeader) {
829 msg.println(getRepositoryText(repo));
830 msg.println(verboseFlag.isEnabled() ? maiHeadingVerbose : maiHeading);
831 printedHeader = true;
832 }
833 msg.println(getMAIText(mai));
834 found = true;
835 }
836 }
837 }
838 }
839 }
840 }