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package org.apache.maven.plugins.shade.filter; |
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import java.io.File; |
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import java.io.FileInputStream; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.util.Collections; |
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import java.util.HashSet; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.Set; |
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import org.apache.maven.artifact.Artifact; |
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import org.apache.maven.plugin.logging.Log; |
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import org.apache.maven.project.MavenProject; |
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import org.codehaus.plexus.util.IOUtil; |
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import org.vafer.jdependency.Clazz; |
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import org.vafer.jdependency.Clazzpath; |
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import org.vafer.jdependency.ClazzpathUnit; |
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public class MinijarFilter |
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implements Filter |
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{ |
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private Log log; |
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private Set<Clazz> removable; |
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private int classesKept; |
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private int classesRemoved; |
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public MinijarFilter( MavenProject project, Log log ) |
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throws IOException |
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{ |
60 | 0 | this( project, log, Collections.<SimpleFilter>emptyList() ); |
61 | 0 | } |
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@SuppressWarnings( { "unchecked", "rawtypes" } ) |
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public MinijarFilter( MavenProject project, Log log, List<SimpleFilter> simpleFilters ) |
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throws IOException |
70 | 0 | { |
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72 | 0 | this.log = log; |
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74 | 0 | Clazzpath cp = new Clazzpath(); |
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76 | 0 | ClazzpathUnit artifactUnit = |
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cp.addClazzpathUnit( new FileInputStream( project.getArtifact().getFile() ), project.toString() ); |
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79 | 0 | for ( Iterator it = project.getArtifacts().iterator(); it.hasNext(); ) |
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{ |
81 | 0 | Artifact dependency = (Artifact) it.next(); |
82 | 0 | addDependencyToClasspath( cp, dependency ); |
83 | 0 | } |
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|
85 | 0 | removable = cp.getClazzes(); |
86 | 0 | removePackages( artifactUnit ); |
87 | 0 | removable.removeAll( artifactUnit.getClazzes() ); |
88 | 0 | removable.removeAll( artifactUnit.getTransitiveDependencies() ); |
89 | 0 | removeSpecificallyIncludedClasses( project, simpleFilters == null |
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? Collections.<SimpleFilter>emptyList() |
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: simpleFilters ); |
92 | 0 | } |
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private ClazzpathUnit addDependencyToClasspath( Clazzpath cp, Artifact dependency ) throws IOException |
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{ |
96 | 0 | InputStream is = null; |
97 | 0 | ClazzpathUnit clazzpathUnit = null; |
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try |
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{ |
100 | 0 | is = new FileInputStream( dependency.getFile() ); |
101 | 0 | clazzpathUnit = cp.addClazzpathUnit( is, dependency.toString() ); |
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} |
103 | 0 | catch( ArrayIndexOutOfBoundsException e ) |
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{ |
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106 | 0 | log.warn( dependency.toString() + " could not be analyzed for minimization; dependency is probably malformed." ); |
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} |
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finally |
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{ |
110 | 0 | IOUtil.close( is ); |
111 | 0 | } |
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113 | 0 | return clazzpathUnit; |
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} |
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private void removePackages( ClazzpathUnit artifactUnit ) |
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{ |
118 | 0 | Set<String> packageNames = new HashSet<String>(); |
119 | 0 | removePackages( artifactUnit.getClazzes(), packageNames ); |
120 | 0 | removePackages( artifactUnit.getTransitiveDependencies(), packageNames ); |
121 | 0 | } |
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@SuppressWarnings( "rawtypes" ) |
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private void removePackages( Set clazzes, Set<String> packageNames ) |
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{ |
126 | 0 | Iterator it = clazzes.iterator(); |
127 | 0 | while ( it.hasNext() ) |
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{ |
129 | 0 | Clazz clazz = (Clazz) it.next(); |
130 | 0 | String name = clazz.getName(); |
131 | 0 | while ( name.contains( "." ) ) |
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{ |
133 | 0 | name = name.substring( 0, name.lastIndexOf( '.' ) ); |
134 | 0 | if ( packageNames.add( name ) ) |
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{ |
136 | 0 | removable.remove( new Clazz( name + ".package-info" ) ); |
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} |
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} |
139 | 0 | } |
140 | 0 | } |
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@SuppressWarnings( "rawtypes" ) |
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private void removeSpecificallyIncludedClasses( MavenProject project, List<SimpleFilter> simpleFilters ) |
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throws IOException |
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{ |
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147 | 0 | Clazzpath checkCp = new Clazzpath(); |
148 | 0 | for ( Iterator it = project.getArtifacts().iterator(); it.hasNext(); ) |
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{ |
150 | 0 | Artifact dependency = (Artifact) it.next(); |
151 | 0 | File jar = dependency.getFile(); |
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153 | 0 | for ( Iterator<SimpleFilter> i = simpleFilters.iterator(); i.hasNext(); ) |
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{ |
155 | 0 | SimpleFilter simpleFilter = i.next(); |
156 | 0 | if ( simpleFilter.canFilter( jar ) ) |
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{ |
158 | 0 | ClazzpathUnit depClazzpathUnit = addDependencyToClasspath( checkCp, dependency ); |
159 | 0 | if ( depClazzpathUnit != null ) |
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{ |
161 | 0 | Iterator<Clazz> j = removable.iterator(); |
162 | 0 | while ( j.hasNext() ) |
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{ |
164 | 0 | Clazz clazz = j.next(); |
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166 | 0 | if ( depClazzpathUnit.getClazzes().contains( clazz ) && simpleFilter.isSpecificallyIncluded( |
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clazz.getName().replace( '.', '/' ) ) ) |
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{ |
169 | 0 | log.info( clazz.getName() + " not removed because it was specifically included" ); |
170 | 0 | j.remove(); |
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} |
172 | 0 | } |
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} |
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} |
175 | 0 | } |
176 | 0 | } |
177 | 0 | } |
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public boolean canFilter( File jar ) |
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{ |
181 | 0 | return true; |
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} |
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public boolean isFiltered( String classFile ) |
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{ |
186 | 0 | String className = classFile.replace( '/', '.' ).replaceFirst( "\\.class$", "" ); |
187 | 0 | Clazz clazz = new Clazz( className ); |
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189 | 0 | if ( removable.contains( clazz ) ) |
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{ |
191 | 0 | log.debug( "Removing " + className ); |
192 | 0 | classesRemoved += 1; |
193 | 0 | return true; |
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} |
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196 | 0 | classesKept += 1; |
197 | 0 | return false; |
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} |
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public void finished() |
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{ |
202 | 0 | int classes_total = classesRemoved + classesKept; |
203 | 0 | log.info( |
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"Minimized " + classes_total + " -> " + classesKept + " (" + (int) ( 100 * classesKept / classes_total ) |
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+ "%)" ); |
206 | 0 | } |
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} |