1 package org.apache.maven.plugin.surefire.booterclient;
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22 import java.io.File;
23 import java.io.UnsupportedEncodingException;
24 import java.security.MessageDigest;
25 import java.security.NoSuchAlgorithmException;
26 import java.util.ArrayList;
27 import java.util.List;
28 import java.util.Map;
29 import org.apache.maven.artifact.Artifact;
30 import org.apache.maven.artifact.repository.ArtifactRepository;
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35 public class ChecksumCalculator
36 {
37 private static final String HEX = "0123456789ABCDEF";
38
39 private final List<Object> checksumItems = new ArrayList<Object>();
40
41 private void appendObject( Object item )
42 {
43 checksumItems.add( item );
44 }
45
46 public void add( boolean value )
47 {
48 checksumItems.add( value );
49 }
50
51 public void add( int value )
52 {
53 checksumItems.add( value );
54 }
55
56 public void add( double value )
57 {
58 checksumItems.add( value );
59 }
60
61 public void add( Map<?, ?> map )
62 {
63 if ( map != null )
64 {
65 appendObject( map.toString() );
66 }
67 }
68
69 public void add( String string )
70 {
71 appendObject( string );
72 }
73
74 public void add( File workingDirectory )
75 {
76 appendObject( workingDirectory );
77 }
78
79 public void add( ArtifactRepository localRepository )
80 {
81 appendObject( localRepository );
82 }
83
84 public void add( List<?> items )
85 {
86 if ( items != null )
87 {
88 for ( Object item : items )
89 {
90 appendObject( item );
91 }
92 }
93 else
94 {
95 appendObject( null );
96 }
97
98 }
99
100 public void add( Object[] items )
101 {
102 if ( items != null )
103 {
104 for ( Object item : items )
105 {
106 appendObject( item );
107 }
108 }
109 else
110 {
111 appendObject( null );
112 }
113 }
114
115 public void add( Artifact artifact )
116 {
117 appendObject( artifact != null ? artifact.getId() : null );
118 }
119
120 public void add( Boolean aBoolean )
121 {
122 appendObject( aBoolean );
123 }
124
125 @SuppressWarnings( "checkstyle:magicnumber" )
126 private static String asHexString( byte[] bytes )
127 {
128 if ( bytes == null )
129 {
130 return null;
131 }
132 final StringBuilder result = new StringBuilder( 2 * bytes.length );
133 for ( byte b : bytes )
134 {
135 result.append( HEX.charAt( ( b & 0xF0 ) >> 4 ) ).append( HEX.charAt( ( b & 0x0F ) ) );
136 }
137 return result.toString();
138 }
139
140 private String getConfig()
141 {
142 StringBuilder result = new StringBuilder();
143 for ( Object checksumItem : checksumItems )
144 {
145 result.append( checksumItem != null ? checksumItem.toString() : "null" );
146 }
147 return result.toString();
148 }
149
150 public String getSha1()
151 {
152 try
153 {
154 MessageDigest md = MessageDigest.getInstance( "SHA-1" );
155 String configValue = getConfig();
156 md.update( configValue.getBytes( "iso-8859-1" ), 0, configValue.length() );
157 byte[] sha1hash = md.digest();
158 return asHexString( sha1hash );
159 }
160 catch ( NoSuchAlgorithmException e )
161 {
162 throw new RuntimeException( e );
163 }
164 catch ( UnsupportedEncodingException e )
165 {
166 throw new RuntimeException( e );
167 }
168 }
169
170 }