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1   ////////////////////////////////////////////////////////////////////////////////
2   // checkstyle: Checks Java source code for adherence to a set of rules.
3   // Copyright (C) 2001-2017 the original author or authors.
4   //
5   // This library is free software; you can redistribute it and/or
6   // modify it under the terms of the GNU Lesser General Public
7   // License as published by the Free Software Foundation; either
8   // version 2.1 of the License, or (at your option) any later version.
9   //
10  // This library is distributed in the hope that it will be useful,
11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  // Lesser General Public License for more details.
14  //
15  // You should have received a copy of the GNU Lesser General Public
16  // License along with this library; if not, write to the Free Software
17  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18  ////////////////////////////////////////////////////////////////////////////////
19  
20  package com.puppycrawl.tools.checkstyle.api;
21  
22  import java.util.Collections;
23  import java.util.HashSet;
24  import java.util.Set;
25  
26  /**
27   * A before execution file filter set applies filters to events.
28   * If a before execution file filter in the set rejects an event, then the
29   * event is rejected. Otherwise, the event is accepted.
30   * @author Richard Veach
31   */
32  public final class BeforeExecutionFileFilterSet
33      implements BeforeExecutionFileFilter {
34      /** Filter set. */
35      private final Set<BeforeExecutionFileFilter> beforeExecutionFileFilters = new HashSet<>();
36  
37      /**
38       * Adds a Filter to the set.
39       * @param filter the Filter to add.
40       */
41      public void addBeforeExecutionFileFilter(BeforeExecutionFileFilter filter) {
42          beforeExecutionFileFilters.add(filter);
43      }
44  
45      /**
46       * Removes filter.
47       * @param filter filter to remove.
48       */
49      public void removeBeforeExecutionFileFilter(BeforeExecutionFileFilter filter) {
50          beforeExecutionFileFilters.remove(filter);
51      }
52  
53      /**
54       * Returns the Filters of the filter set.
55       * @return the Filters of the filter set.
56       */
57      public Set<BeforeExecutionFileFilter> getBeforeExecutionFileFilters() {
58          return Collections.unmodifiableSet(beforeExecutionFileFilters);
59      }
60  
61      @Override
62      public String toString() {
63          return beforeExecutionFileFilters.toString();
64      }
65  
66      @Override
67      public boolean accept(String uri) {
68          boolean result = true;
69          for (BeforeExecutionFileFilter filter : beforeExecutionFileFilters) {
70              if (!filter.accept(uri)) {
71                  result = false;
72                  break;
73              }
74          }
75          return result;
76      }
77  
78      /** Clears the BeforeExecutionFileFilterSet. */
79      public void clear() {
80          beforeExecutionFileFilters.clear();
81      }
82  }