001    /*
002     * SonarQube, open source software quality management tool.
003     * Copyright (C) 2008-2014 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * SonarQube is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * SonarQube is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public License
017     * along with this program; if not, write to the Free Software Foundation,
018     * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
019     */
020    package org.sonar.api.resources;
021    
022    import com.google.common.collect.Maps;
023    import org.apache.commons.lang.ArrayUtils;
024    import org.slf4j.Logger;
025    import org.slf4j.LoggerFactory;
026    import org.sonar.api.BatchComponent;
027    import org.sonar.api.ServerComponent;
028    
029    import java.util.ArrayList;
030    import java.util.Arrays;
031    import java.util.Collection;
032    import java.util.List;
033    import java.util.Map;
034    
035    /**
036     * A class to store the list of languages
037     *
038     * @since 1.10
039     */
040    public class Languages implements BatchComponent, ServerComponent {
041    
042      private static final Logger LOG = LoggerFactory.getLogger(Languages.class);
043    
044      private final Map<String, Language> map = Maps.newLinkedHashMap();
045    
046      /**
047       * Creates a list of languages
048       */
049      public Languages(Language... languages) {
050        LOG.debug("Available languages:");
051        for (Language language : languages) {
052          map.put(language.getKey(), language);
053          LOG.debug("  * " + language.getName() + " => \"" + language.getKey() + "\"");
054        }
055      }
056    
057      /**
058       * No languages are installed
059       */
060      public Languages() {
061        LOG.debug("No language available");
062      }
063    
064      /**
065       * @param keys the languages keys
066       * @return the list of suffix files associates to languages included in the current object
067       */
068      public String[] getSuffixes(String... keys) {
069        List<String> suffixes = new ArrayList<String>();
070    
071        for (Map.Entry<String, Language> entry : map.entrySet()) {
072          if (ArrayUtils.isEmpty(keys) || ArrayUtils.contains(keys, entry.getKey())) {
073            suffixes.addAll(Arrays.asList(entry.getValue().getFileSuffixes()));
074          }
075        }
076        return suffixes.toArray(new String[suffixes.size()]);
077      }
078    
079      /**
080       * Return a language from the current object based on its key
081       */
082      public Language get(String key) {
083        return map.get(key);
084      }
085    
086      /**
087       * Adds a language to the current object
088       */
089      public void add(Language language) {
090        map.put(language.getKey(), language);
091      }
092    
093      /**
094       * @since 4.2
095       */
096      public Language[] all() {
097        Collection<Language> languages = map.values();
098        return languages.toArray(new Language[languages.size()]);
099      }
100    
101    }