View Javadoc

1   package org.apache.maven.plugin.assembly.testutils;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.io.BufferedReader;
23  import java.io.File;
24  import java.io.FileReader;
25  import java.io.FileWriter;
26  import java.io.IOException;
27  import java.io.PrintWriter;
28  import java.io.StringWriter;
29  
30  import org.codehaus.plexus.util.IOUtil;
31  
32  public final class TestUtils
33  {
34  
35      private TestUtils()
36      {
37      }
38  
39      /**
40       * Write a text to a file using platform encoding.
41       */
42      public static void writeToFile( File file, String testStr )
43          throws IOException
44      {
45          FileWriter fw = null;
46          try
47          {
48              fw = new FileWriter( file ); // platform encoding
49              fw.write( testStr );
50          }
51          finally
52          {
53              IOUtil.close( fw );
54          }
55      }
56  
57      /**
58       * Read file content using platform encoding and converting line endings to \\n.
59       */
60      public static String readFile( File file ) throws IOException
61      {
62          StringBuffer buffer = new StringBuffer();
63  
64          BufferedReader reader = new BufferedReader( new FileReader( file ) ); // platform encoding
65  
66          String line = null;
67  
68          while( ( line = reader.readLine() ) != null )
69          {
70              if ( buffer.length() > 0 )
71              {
72                  buffer.append( '\n' );
73              }
74  
75              buffer.append( line );
76          }
77  
78          return buffer.toString();
79      }
80  
81      public static String toString( Throwable error )
82      {
83          StringWriter sw = new StringWriter();
84          PrintWriter pw = new PrintWriter( sw );
85  
86          error.printStackTrace( pw );
87  
88          return sw.toString();
89      }
90  }