1 /*
2 * The MIT License
3 *
4 * Copyright (c) 2007 The Codehaus
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
7 * associated documentation files (the "Software"), to deal in the Software without restriction,
8 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
9 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in all copies or
13 * substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
16 * NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
17 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 */
21 package org.codehaus.mojo.native2ascii;
22
23 import java.io.*;
24 import java.nio.CharBuffer;
25
26 /**
27 * @author Evgeny Mandrikov
28 */
29 public final class Native2Ascii
30 {
31
32 private Native2Ascii()
33 {
34 }
35
36 /**
37 * Converts given CharSequence into ASCII String.
38 */
39 public static String nativeToAscii( CharSequence cs )
40 {
41 if ( cs == null )
42 {
43 return null;
44 }
45 StringBuilder sb = new StringBuilder();
46 for ( int i = 0; i < cs.length(); i++ )
47 {
48 char c = cs.charAt( i );
49 if ( c <= 0x7E )
50 {
51 sb.append( c );
52 }
53 else
54 {
55 sb.append( "\\u" );
56 String hex = Integer.toHexString( c );
57 for ( int j = hex.length(); j < 4; j++ )
58 {
59 sb.append( '0' );
60 }
61 sb.append( hex );
62 }
63 }
64 return sb.toString();
65 }
66
67 public static void nativeToAscii( File src, File dst, String encoding )
68 throws IOException
69 {
70 BufferedReader input = null;
71 BufferedWriter output = null;
72 try
73 {
74 input = new BufferedReader( new InputStreamReader( new FileInputStream( src ), encoding ) );
75 output = new BufferedWriter( new OutputStreamWriter( new FileOutputStream( dst ), "US-ASCII" ) );
76
77 char[] buffer = new char[4096];
78 int len;
79 while ( ( len = input.read( buffer ) ) != -1 )
80 {
81 output.write( nativeToAscii( CharBuffer.wrap( buffer, 0, len ) ) );
82 }
83 }
84 finally
85 {
86 closeQuietly( input );
87 closeQuietly( output );
88 }
89 }
90
91 private static void closeQuietly( Closeable closeable )
92 {
93 if ( closeable != null )
94 {
95 try
96 {
97 closeable.close();
98 }
99 catch ( IOException e )
100 {
101 // ignore
102 }
103 }
104 }
105
106 }