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1   /*
2    * Copyright (c) 2012-2022, jcabi.com
3    * All rights reserved.
4    *
5    * Redistribution and use in source and binary forms, with or without
6    * modification, are permitted provided that the following conditions
7    * are met: 1) Redistributions of source code must retain the above
8    * copyright notice, this list of conditions and the following
9    * disclaimer. 2) Redistributions in binary form must reproduce the above
10   * copyright notice, this list of conditions and the following
11   * disclaimer in the documentation and/or other materials provided
12   * with the distribution. 3) Neither the name of the jcabi.com nor
13   * the names of its contributors may be used to endorse or promote
14   * products derived from this software without specific prior written
15   * permission.
16   *
17   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
19   * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21   * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
22   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
28   * OF THE POSSIBILITY OF SUCH DAMAGE.
29   */
30  package com.jcabi.xml;
31  
32  import com.jcabi.log.Logger;
33  import java.util.Collection;
34  import java.util.Collections;
35  import java.util.concurrent.CopyOnWriteArrayList;
36  import javax.xml.transform.ErrorListener;
37  import javax.xml.transform.TransformerException;
38  
39  /**
40   * Error listener to console.
41   *
42   * @since 0.22
43   */
44  final class ConsoleErrorListener implements ErrorListener {
45  
46      /**
47       * Errors.
48       */
49      private final Collection<String> errors =
50          new CopyOnWriteArrayList<>();
51  
52      @Override
53      public void warning(final TransformerException warning) {
54          Logger.warn(
55              this, "#warning(): %s",
56              warning.getMessageAndLocation()
57          );
58          this.errors.add(warning.getMessageAndLocation());
59      }
60  
61      @Override
62      public void error(final TransformerException error)
63          throws TransformerException {
64          Logger.error(
65              this, "#error(): %s",
66              error.getMessageAndLocation()
67          );
68          this.errors.add(error.getMessageAndLocation());
69          throw error;
70      }
71  
72      @Override
73      public void fatalError(final TransformerException error)
74          throws TransformerException {
75          Logger.error(
76              this, "#fatalError(): %s",
77              error.getMessageAndLocation()
78          );
79          this.errors.add(error.getMessageAndLocation());
80          throw error;
81      }
82  
83      /**
84       * Return all errors.
85       * @return List of errors accumulated
86       */
87      public Collection<String> summary() {
88          return Collections.unmodifiableCollection(this.errors);
89      }
90  
91  }