Coverage Report

Coverage Report - org.apache.maven.plugins.shade.DefaultShader

Classes in this File

Line Coverage

Branch Coverage

Complexity

DefaultShader

81%

77/94

73%

31/42

4,273

DefaultShader$RelocatorRemapper

80%

33/41

77%

14/18

4,273

 package org.apache.maven.plugins.shade;
 
 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the
  * "License"); you may not use this file except in compliance
  * with the License.  You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing,
  * software distributed under the License is distributed on an
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  * KIND, either express or implied.  See the License for the
  * specific language governing permissions and limitations
  * under the License.
  */
 
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.Enumeration;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
 import java.util.ArrayList;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 import java.util.jar.JarOutputStream;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.zip.ZipException;
 
 import org.apache.maven.plugins.shade.relocation.Relocator;
 import org.apache.maven.plugins.shade.resource.ResourceTransformer;
 import org.apache.maven.plugins.shade.filter.Filter;
 import org.codehaus.plexus.logging.AbstractLogEnabled;
 import org.codehaus.plexus.util.IOUtil;
 import org.objectweb.asm.ClassReader;
 import org.objectweb.asm.ClassVisitor;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.commons.Remapper;
 import org.objectweb.asm.commons.RemappingClassAdapter;
 
 /**
  * @author Jason van Zyl
  * @plexus.component
  */
 public class DefaultShader
     extends AbstractLogEnabled
     implements Shader
 {
     public void shade( Set jars, File uberJar, List filters, List relocators, List resourceTransformers )
     throws IOException
     {
         Set resources = new HashSet();
 
         RelocatorRemapper remapper = new RelocatorRemapper( relocators );
 
         uberJar.getParentFile().mkdirs();
         JarOutputStream jos = new JarOutputStream( new FileOutputStream( uberJar ) );
 
         for ( Iterator i = jars.iterator(); i.hasNext(); )
         {
             File jar = (File) i.next();
 
             List jarFilters = getFilters( jar, filters );
 
             JarFile jarFile;
             
             try 
             {
                 jarFile = new JarFile( jar );
             }
             catch (ZipException zex)
             {
                 // JarFile is not very verbose and doesn't tell the user which file it was
                 // so we will create a new Exception instead
                 throw new ZipException( "error in opening zip file" + jar );
             }
 
             for ( Enumeration j = jarFile.entries(); j.hasMoreElements(); )
             {
                 JarEntry entry = (JarEntry) j.nextElement();
 
                 String name = entry.getName();
                 if ( "META-INF/INDEX.LIST".equals( name ) ) 
                 {
                     //we cannot allow the jar indexes to be copied over or the 
                     //jar is useless.   Ideally, we could create a new one
                     //later
                     continue;
                 }
 
                 String mappedName = remapper.map( name );
 
                 InputStream is = jarFile.getInputStream( entry );
                 if ( !entry.isDirectory() && !isFiltered( jarFilters, name ) )
                 {
                     int idx = mappedName.lastIndexOf( '/' );
                     if ( idx != -1 )
                     {
                         //make sure dirs are created
                         String dir = mappedName.substring( 0, idx );
                         if ( !resources.contains( dir ) )
                         {
                             addDirectory( resources, jos, dir );
                         }
                     }
 
                     if ( name.endsWith( ".class" ) )
                     {
                         addRemappedClass( remapper, jos, jar, name, is );
                     }
                     else
                     {
                         if ( !resourceTransformed( resourceTransformers, mappedName, is ) )
                         {
                             // Avoid duplicates that aren't accounted for by the resource transformers
                             if ( resources.contains( mappedName ) )
                             {
                                 continue;
                             }
 
                             addResource( resources, jos, mappedName, is );
                         }
                     }
                 }
 
                 IOUtil.close( is );
             }
 
             jarFile.close();
         }
 
         for ( Iterator i = resourceTransformers.iterator(); i.hasNext(); )
         {
             ResourceTransformer transformer = (ResourceTransformer) i.next();
 
             if ( transformer.hasTransformedResource() )
             {
                 transformer.modifyOutputStream( jos );
             }
         }
 
         IOUtil.close( jos );
     }
 
     private List getFilters( File jar, List filters )
     {
         List list = new ArrayList();
 
         for ( int i = 0; i < filters.size(); i++ )
         {
             Filter filter = (Filter) filters.get( i );
 
             if ( filter.canFilter( jar ) )
             {
                 list.add( filter );
             }
 
         }
 
         return list;
     }
 
     private void addDirectory( Set resources, JarOutputStream jos, String name )
         throws IOException
     {
         if ( name.lastIndexOf( '/' ) > 0 )
         {
             String parent = name.substring( 0, name.lastIndexOf( '/' ) );
             if ( !resources.contains( parent ) )
             {
                 addDirectory( resources, jos, parent );
             }
         }
 
         //directory entries must end in "/"
         JarEntry entry = new JarEntry( name + "/" );
         jos.putNextEntry( entry );
 
         resources.add( name );
     }
 
     private void addRemappedClass( RelocatorRemapper remapper, JarOutputStream jos, File jar, String name,
                                    InputStream is )
         throws IOException
     {
         if ( !remapper.hasRelocators() )
         {
             try
             {
                 jos.putNextEntry( new JarEntry( name ) );
                 IOUtil.copy( is, jos );
             }
             catch ( ZipException e )
             {
                 getLogger().warn( "We have a duplicate " + name + " in " + jar );
             }
 
             return;
         }
 
         ClassReader cr = new ClassReader( is );
 
         ClassWriter cw = new ClassWriter( cr, 0 );
 
         ClassVisitor cv = new RemappingClassAdapter( cw, remapper );
 
         cr.accept( cv, ClassReader.EXPAND_FRAMES );
 
         byte[] renamedClass = cw.toByteArray();
 
         // Need to take the .class off for remapping evaluation
         String mappedName = remapper.map( name.substring( 0, name.indexOf( '.' ) ) );
 
         try
         {
             // Now we put it back on so the class file is written out with the right extension.
             jos.putNextEntry( new JarEntry( mappedName + ".class" ) );
 
             IOUtil.copy( renamedClass, jos );
         }
         catch ( ZipException e )
         {
             getLogger().warn( "We have a duplicate " + mappedName + " in " + jar );
         }
     }
 
     private boolean isFiltered( List filters, String name )
     {
         for ( int i = 0; i < filters.size(); i++ )
         {
             Filter filter = (Filter) filters.get( i );
 
             if ( filter.isFiltered( name ) )
             {
                 return true;
             }
         }
 
         return false;
     }
 
     private boolean resourceTransformed( List resourceTransformers, String name, InputStream is )
         throws IOException
     {
         boolean resourceTransformed = false;
 
         for ( Iterator k = resourceTransformers.iterator(); k.hasNext(); )
         {
             ResourceTransformer transformer = (ResourceTransformer) k.next();
 
             if ( transformer.canTransformResource( name ) )
             {
                 transformer.processResource( is );
 
                 resourceTransformed = true;
 
                 break;
             }
         }
         return resourceTransformed;
     }
 
     private void addResource( Set resources, JarOutputStream jos, String name, InputStream is )
         throws IOException
     {
         jos.putNextEntry( new JarEntry( name ) );
 
         IOUtil.copy( is, jos );
 
         resources.add( name );
     }
 
     class RelocatorRemapper
         extends Remapper
     {
 
         private final Pattern classPattern = Pattern.compile( "(\\[*)?L(.+);" );
 
         List relocators;
 
         public RelocatorRemapper( List relocators )
         {
             this.relocators = relocators;
         }
 
         public boolean hasRelocators()
         {
             return !relocators.isEmpty();
         }
 
         public Object mapValue( Object object )
         {
             if ( object instanceof String )
             {
                 String name = (String) object;
                 String value = name;
 
                 String prefix = "";
                 String suffix = "";
 
                 Matcher m = classPattern.matcher( name );
                 if ( m.matches() )
                 {
                     prefix = m.group( 1 ) + "L";
                     suffix = ";";
                     name = m.group( 2 );
                 }
 
                 for ( Iterator i = relocators.iterator(); i.hasNext(); )
                 {
                     Relocator r = (Relocator) i.next();
 
                     if ( r.canRelocateClass( name ) )
                     {
                         value = prefix + r.relocateClass( name ) + suffix;
                         break;
                     }
                     else if ( r.canRelocatePath( name ) )
                     {
                         value = prefix + r.relocatePath( name ) + suffix;
                         break;
                     }
                 }
 
                 return value;
             }
 
             return super.mapValue( object );
         }
 
         public String map( String name )
         {
             String value = name;
 
             String prefix = "";
             String suffix = "";
 
             Matcher m = classPattern.matcher( name );
             if ( m.matches() )
             {
                 prefix = m.group( 1 ) + "L";
                 suffix = ";";
                 name = m.group( 2 );
             }
 
             for ( Iterator i = relocators.iterator(); i.hasNext(); )
             {
                 Relocator r = (Relocator) i.next();
 
                 if ( r.canRelocatePath( name ) )
                 {
                     value = prefix + r.relocatePath( name ) + suffix;
                     break;
                 }
             }
 
             return value;
         }
 
     }
 
 }

1		package org.apache.maven.plugins.shade;
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.io.FileOutputStream;
24		import java.io.IOException;
25		import java.io.InputStream;
26		import java.util.Enumeration;
27		import java.util.HashSet;
28		import java.util.Iterator;
29		import java.util.List;
30		import java.util.Set;
31		import java.util.ArrayList;
32		import java.util.jar.JarEntry;
33		import java.util.jar.JarFile;
34		import java.util.jar.JarOutputStream;
35		import java.util.regex.Matcher;
36		import java.util.regex.Pattern;
37		import java.util.zip.ZipException;
38
39		import org.apache.maven.plugins.shade.relocation.Relocator;
40		import org.apache.maven.plugins.shade.resource.ResourceTransformer;
41		import org.apache.maven.plugins.shade.filter.Filter;
42		import org.codehaus.plexus.logging.AbstractLogEnabled;
43		import org.codehaus.plexus.util.IOUtil;
44		import org.objectweb.asm.ClassReader;
45		import org.objectweb.asm.ClassVisitor;
46		import org.objectweb.asm.ClassWriter;
47		import org.objectweb.asm.commons.Remapper;
48		import org.objectweb.asm.commons.RemappingClassAdapter;
49
50		/**
51		* @author Jason van Zyl
52		* @plexus.component
53		*/
54	7	public class DefaultShader
55		extends AbstractLogEnabled
56		implements Shader
57		{
58		public void shade( Set jars, File uberJar, List filters, List relocators, List resourceTransformers )
59		throws IOException
60		{
61	7	Set resources = new HashSet();
62
63	7	RelocatorRemapper remapper = new RelocatorRemapper( relocators );
64
65	7	uberJar.getParentFile().mkdirs();
66	7	JarOutputStream jos = new JarOutputStream( new FileOutputStream( uberJar ) );
67
68	7	for ( Iterator i = jars.iterator(); i.hasNext(); )
69		{
70	12	File jar = (File) i.next();
71
72	12	List jarFilters = getFilters( jar, filters );
73
74		JarFile jarFile;
75
76		try
77		{
78	12	jarFile = new JarFile( jar );
79		}
80	0	catch (ZipException zex)
81		{
82		// JarFile is not very verbose and doesn't tell the user which file it was
83		// so we will create a new Exception instead
84	0	throw new ZipException( "error in opening zip file" + jar );
85	12	}
86
87	12	for ( Enumeration j = jarFile.entries(); j.hasMoreElements(); )
88		{
89	631	JarEntry entry = (JarEntry) j.nextElement();
90
91	631	String name = entry.getName();
92	631	if ( "META-INF/INDEX.LIST".equals( name ) )
93		{
94		//we cannot allow the jar indexes to be copied over or the
95		//jar is useless. Ideally, we could create a new one
96		//later
97	0	continue;
98		}
99
100	631	String mappedName = remapper.map( name );
101
102	631	InputStream is = jarFile.getInputStream( entry );
103	631	if ( !entry.isDirectory() && !isFiltered( jarFilters, name ) )
104		{
105	483	int idx = mappedName.lastIndexOf( '/' );
106	483	if ( idx != -1 )
107		{
108		//make sure dirs are created
109	483	String dir = mappedName.substring( 0, idx );
110	483	if ( !resources.contains( dir ) )
111		{
112	81	addDirectory( resources, jos, dir );
113		}
114		}
115
116	483	if ( name.endsWith( ".class" ) )
117		{
118	422	addRemappedClass( remapper, jos, jar, name, is );
119		}
120		else
121		{
122	61	if ( !resourceTransformed( resourceTransformers, mappedName, is ) )
123		{
124		// Avoid duplicates that aren't accounted for by the resource transformers
125	56	if ( resources.contains( mappedName ) )
126		{
127	5	continue;
128		}
129
130	51	addResource( resources, jos, mappedName, is );
131		}
132		}
133		}
134
135	626	IOUtil.close( is );
136	626	}
137
138	12	jarFile.close();
139	12	}
140
141	7	for ( Iterator i = resourceTransformers.iterator(); i.hasNext(); )
142		{
143	5	ResourceTransformer transformer = (ResourceTransformer) i.next();
144
145	5	if ( transformer.hasTransformedResource() )
146		{
147	5	transformer.modifyOutputStream( jos );
148		}
149	5	}
150
151	7	IOUtil.close( jos );
152	7	}
153
154		private List getFilters( File jar, List filters )
155		{
156	12	List list = new ArrayList();
157
158	12	for ( int i = 0; i < filters.size(); i++ )
159		{
160	0	Filter filter = (Filter) filters.get( i );
161
162	0	if ( filter.canFilter( jar ) )
163		{
164	0	list.add( filter );
165		}
166
167		}
168
169	12	return list;
170		}
171
172		private void addDirectory( Set resources, JarOutputStream jos, String name )
173		throws IOException
174		{
175	150	if ( name.lastIndexOf( '/' ) > 0 )
176		{
177	129	String parent = name.substring( 0, name.lastIndexOf( '/' ) );
178	129	if ( !resources.contains( parent ) )
179		{
180	69	addDirectory( resources, jos, parent );
181		}
182		}
183
184		//directory entries must end in "/"
185	150	JarEntry entry = new JarEntry( name + "/" );
186	150	jos.putNextEntry( entry );
187
188	150	resources.add( name );
189	150	}
190
191		private void addRemappedClass( RelocatorRemapper remapper, JarOutputStream jos, File jar, String name,
192		InputStream is )
193		throws IOException
194		{
195	422	if ( !remapper.hasRelocators() )
196		{
197		try
198		{
199	0	jos.putNextEntry( new JarEntry( name ) );
200	0	IOUtil.copy( is, jos );
201		}
202	0	catch ( ZipException e )
203		{
204	0	getLogger().warn( "We have a duplicate " + name + " in " + jar );
205	0	}
206
207	0	return;
208		}
209
210	422	ClassReader cr = new ClassReader( is );
211
212	422	ClassWriter cw = new ClassWriter( cr, 0 );
213
214	422	ClassVisitor cv = new RemappingClassAdapter( cw, remapper );
215
216	422	cr.accept( cv, ClassReader.EXPAND_FRAMES );
217
218	422	byte[] renamedClass = cw.toByteArray();
219
220		// Need to take the .class off for remapping evaluation
221	422	String mappedName = remapper.map( name.substring( 0, name.indexOf( '.' ) ) );
222
223		try
224		{
225		// Now we put it back on so the class file is written out with the right extension.
226	422	jos.putNextEntry( new JarEntry( mappedName + ".class" ) );
227
228	422	IOUtil.copy( renamedClass, jos );
229		}
230	0	catch ( ZipException e )
231		{
232	0	getLogger().warn( "We have a duplicate " + mappedName + " in " + jar );
233	422	}
234	422	}
235
236		private boolean isFiltered( List filters, String name )
237		{
238	483	for ( int i = 0; i < filters.size(); i++ )
239		{
240	0	Filter filter = (Filter) filters.get( i );
241
242	0	if ( filter.isFiltered( name ) )
243		{
244	0	return true;
245		}
246		}
247
248	483	return false;
249		}
250
251		private boolean resourceTransformed( List resourceTransformers, String name, InputStream is )
252		throws IOException
253		{
254	61	boolean resourceTransformed = false;
255
256	61	for ( Iterator k = resourceTransformers.iterator(); k.hasNext(); )
257		{
258	55	ResourceTransformer transformer = (ResourceTransformer) k.next();
259
260	55	if ( transformer.canTransformResource( name ) )
261		{
262	5	transformer.processResource( is );
263
264	5	resourceTransformed = true;
265
266	5	break;
267		}
268	50	}
269	61	return resourceTransformed;
270		}
271
272		private void addResource( Set resources, JarOutputStream jos, String name, InputStream is )
273		throws IOException
274		{
275	51	jos.putNextEntry( new JarEntry( name ) );
276
277	51	IOUtil.copy( is, jos );
278
279	51	resources.add( name );
280	51	}
281
282	7	class RelocatorRemapper
283		extends Remapper
284		{
285
286	7	private final Pattern classPattern = Pattern.compile( "(\\[*)?L(.+);" );
287
288		List relocators;
289
290		public RelocatorRemapper( List relocators )
291	7	{
292	7	this.relocators = relocators;
293	7	}
294
295		public boolean hasRelocators()
296		{
297	422	return !relocators.isEmpty();
298		}
299
300		public Object mapValue( Object object )
301		{
302	8212	if ( object instanceof String )
303		{
304	4603	String name = (String) object;
305	4603	String value = name;
306
307	4603	String prefix = "";
308	4603	String suffix = "";
309
310	4603	Matcher m = classPattern.matcher( name );
311	4603	if ( m.matches() )
312		{
313	0	prefix = m.group( 1 ) + "L";
314	0	suffix = ";";
315	0	name = m.group( 2 );
316		}
317
318	4603	for ( Iterator i = relocators.iterator(); i.hasNext(); )
319		{
320	4603	Relocator r = (Relocator) i.next();
321
322	4603	if ( r.canRelocateClass( name ) )
323		{
324	1	value = prefix + r.relocateClass( name ) + suffix;
325	1	break;
326		}
327	4602	else if ( r.canRelocatePath( name ) )
328		{
329	0	value = prefix + r.relocatePath( name ) + suffix;
330	0	break;
331		}
332	4602	}
333
334	4603	return value;
335		}
336
337	3609	return super.mapValue( object );
338		}
339
340		public String map( String name )
341		{
342	102041	String value = name;
343
344	102041	String prefix = "";
345	102041	String suffix = "";
346
347	102041	Matcher m = classPattern.matcher( name );
348	102041	if ( m.matches() )
349		{
350	0	prefix = m.group( 1 ) + "L";
351	0	suffix = ";";
352	0	name = m.group( 2 );
353		}
354
355	102041	for ( Iterator i = relocators.iterator(); i.hasNext(); )
356		{
357	102041	Relocator r = (Relocator) i.next();
358
359	102041	if ( r.canRelocatePath( name ) )
360		{
361	20977	value = prefix + r.relocatePath( name ) + suffix;
362	20977	break;
363		}
364	81064	}
365
366	102041	return value;
367		}
368
369		}
370
371		}