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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.internal.utils;
21  
22  import com.puppycrawl.tools.checkstyle.AuditEventFormatter;
23  import com.puppycrawl.tools.checkstyle.api.AuditEvent;
24  
25  /**
26   * Represents the formatter for log message which is used in UTs.
27   * Message format is: filePath:lineNo:columnNo: message.
28   * @author Andrei Selkin
29   */
30  public class AuditEventUtFormatter implements AuditEventFormatter {
31  
32      /** Length of all separators. */
33      private static final int LENGTH_OF_ALL_SEPARATORS = 4;
34  
35      @Override
36      public String format(AuditEvent event) {
37          final String fileName = event.getFileName();
38          final String message = event.getMessage();
39  
40          // avoid StringBuffer.expandCapacity
41          final int bufLen = event.getFileName().length() + event.getMessage().length()
42              + LENGTH_OF_ALL_SEPARATORS;
43          final StringBuilder sb = new StringBuilder(bufLen);
44  
45          sb.append(fileName).append(':').append(event.getLine());
46          if (event.getColumn() > 0) {
47              sb.append(':').append(event.getColumn());
48          }
49          sb.append(": ").append(message);
50  
51          return sb.toString();
52      }
53  }