1 package org.apache.maven.surefire.util.internal;
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.File;
23 import java.net.MalformedURLException;
24 import java.net.URL;
25 import java.util.BitSet;
26
27 import static org.apache.maven.surefire.util.internal.StringUtils.UTF_8;
28
29 /**
30 * Utility for dealing with URLs in pre-JDK 1.4.
31 */
32 public final class UrlUtils
33 {
34 private static final BitSet UNRESERVED = new BitSet( Byte.MAX_VALUE - Byte.MIN_VALUE + 1 );
35
36 private static final int RADIX = 16;
37
38 private static final int MASK = 0xf;
39
40 private UrlUtils()
41 {
42 throw new IllegalStateException( "no instantiable constructor" );
43 }
44
45 static
46 {
47 byte[] bytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.!~*'():/".getBytes( UTF_8 );
48 for ( byte aByte : bytes )
49 {
50 UNRESERVED.set( aByte );
51 }
52 }
53
54 public static URL toURL( File file )
55 throws MalformedURLException
56 {
57 // with JDK 1.4+, code would be: return new URL( file.toURI().toASCIIString() );
58 //noinspection deprecation
59 URL url = file.toURL();
60 // encode any characters that do not comply with RFC 2396
61 // this is primarily to handle Windows where the user's home directory contains spaces
62 byte[] bytes = url.toString().getBytes( UTF_8 );
63 StringBuilder buf = new StringBuilder( bytes.length );
64 for ( byte b : bytes )
65 {
66 if ( b > 0 && UNRESERVED.get( b ) )
67 {
68 buf.append( (char) b );
69 }
70 else
71 {
72 buf.append( '%' );
73 buf.append( Character.forDigit( b >>> 4 & MASK, RADIX ) );
74 buf.append( Character.forDigit( b & MASK, RADIX ) );
75 }
76 }
77 return new URL( buf.toString() );
78 }
79 }