/*

  * #%L

  * JavaHg

  * %%

  * Copyright (C) 2011 aragost Trifork ag

  * %%

  * Permission is hereby granted, free of charge, to any person obtaining a copy

  * of this software and associated documentation files (the "Software"), to deal

  * in the Software without restriction, including without limitation the rights

  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

  * copies of the Software, and to permit persons to whom the Software is

  * furnished to do so, subject to the following conditions:

  * 

  * The above copyright notice and this permission notice shall be included in

  * all copies or substantial portions of the Software.

  * 

  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

  * THE SOFTWARE.

  * #L%

  */

 package com.aragost.javahg.commands;

 import java.io.IOException;

 import java.util.Collections;

 import java.util.List;

 import com.aragost.javahg.Bookmark;

 import com.aragost.javahg.HgVersion;

 import com.aragost.javahg.Repository;

 import com.aragost.javahg.commands.flags.BookmarksCommandFlags;

 import com.aragost.javahg.internals.HgInputStream;

 import com.aragost.javahg.internals.RuntimeIOException;

 import com.aragost.javahg.log.Logger;

 import com.aragost.javahg.log.LoggerFactory;

 import com.google.common.collect.Lists;

 /**

  * Command class for executing <tt>hg bookmarks</tt>.

  */

 public class BookmarksCommand extends BookmarksCommandFlags {

     private static final Logger LOG = LoggerFactory.getLogger(BookmarksCommand.class);

     private static final byte[] NO_BOOKMARKS = "no bookmarks set\n".getBytes();

     private static final HgVersion ISSUE3263_FIXED = HgVersion.fromString("2.1.1");

     public BookmarksCommand(Repository repository) {

         super(repository);

         withDebugFlag();

     }

     /**

      * 

      * @return all bookmarks

      */

     public List<Bookmark> list() {

         Repository repo = getRepository();

         HgInputStream stream = launchStream();

         try {

             if (stream.match(NO_BOOKMARKS)) {

                 stream.consumeAll();

                 return Collections.emptyList();

             }

             List<Bookmark> result = Lists.newArrayList();

             while (stream.peek() != -1) {

                 stream.mustMatch(' ');

                 boolean active = stream.read() == '*';

                 stream.mustMatch(' ');

                 String name = stream.textUpTo(' ');

                 stream.upTo(':');

                 String node = stream.textUpTo('\n');

                 Bookmark bookmark = new Bookmark(repo.changeset(node), name, active);

                 result.add(bookmark);

             }

             return result;

         } catch (IOException e) {

             throw new RuntimeIOException(e);

         }

     }

     /**

      * Create a new bookmark

      * 

      * @param name

      */

     public void create(String name) {

         launchString(name);

         if (getRepository().getHgVersion().isBefore(ISSUE3263_FIXED)) {

             // It seems that performing a 'bookmarks --list' is a

             // workaround for

             // http://mercurial.selenic.com/bts/issue3263

             LOG.info("Issue3263 workaround: Executing 'bookmarks --list' as part of creating a bookmark");

             list();

         }

     }

     /**

      * Delete a bookmark

      * 

      * @param name

      */

     public void delete(String name) {

         launchString("--delete", name);

     }

     /**

      * Rename a bookmark

      * 

      * @param oldName

      * @param newName

      */

     public void rename(String oldName, String newName) {

         launchString("--rename", oldName, newName);

     }

 }