| /****************************************************************************** |
| * Copyright (c) 2008 Oracle |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Konstantin Komissarchik - initial implementation and ongoing maintenance |
| ******************************************************************************/ |
| |
| package org.eclipse.jst.common.project.facet.core.libprov.user; |
| |
| import static org.eclipse.jst.common.project.facet.core.internal.FacetedProjectFrameworkJavaPlugin.PLUGIN_ID; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Enumeration; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipFile; |
| |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.jdt.core.IClasspathEntry; |
| import org.eclipse.osgi.util.NLS; |
| |
| /** |
| * An implementation of {@link UserLibraryValidator} that checks for presence of key classes in |
| * the selected libraries. Validation fails if one or more of the key classes are not found. This |
| * validator can be used as is or subclassed. |
| * |
| * @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a> |
| * @since 1.4 |
| */ |
| |
| public class KeyClassesValidator |
| |
| extends UserLibraryValidator |
| |
| { |
| private final Set<String> classFileNames = new HashSet<String>(); |
| private final Map<String,String> classFileNameToClassName = new HashMap<String,String>(); |
| |
| @Override |
| public void init( final List<String> params ) |
| { |
| for( String className : params ) |
| { |
| final StringBuilder buf = new StringBuilder(); |
| |
| for( int i = 0, n = className.length(); i < n; i++ ) |
| { |
| final char ch = className.charAt( i ); |
| |
| if( ch == '.' ) |
| { |
| buf.append( '/' ); |
| } |
| else |
| { |
| buf.append( ch ); |
| } |
| } |
| |
| buf.append( ".class" ); //$NON-NLS-1$ |
| |
| final String classFileName = buf.toString(); |
| this.classFileNames.add( classFileName ); |
| this.classFileNameToClassName.put( classFileName, className ); |
| } |
| } |
| |
| @Override |
| public IStatus validate( final UserLibraryProviderInstallOperationConfig config ) |
| { |
| final Map<String,Integer> classAppearanceCounts = new HashMap<String,Integer>(); |
| |
| for( String classFileName : this.classFileNames ) |
| { |
| classAppearanceCounts.put( classFileName, 0 ); |
| } |
| |
| for( IClasspathEntry cpe : config.resolve() ) |
| { |
| if( cpe.getEntryKind() == IClasspathEntry.CPE_LIBRARY ) |
| { |
| final File file = cpe.getPath().toFile(); |
| |
| if( file.exists() ) |
| { |
| ZipFile zip = null; |
| |
| try |
| { |
| zip = new ZipFile( file ); |
| |
| for( Enumeration<? extends ZipEntry> itr = zip.entries(); itr.hasMoreElements(); ) |
| { |
| final ZipEntry zipEntry = itr.nextElement(); |
| final String name = zipEntry.getName(); |
| |
| Integer count = classAppearanceCounts.get( name ); |
| |
| if( count != null ) |
| { |
| classAppearanceCounts.put( name, count + 1 ); |
| } |
| } |
| } |
| catch( IOException e ) |
| { |
| |
| } |
| finally |
| { |
| if( zip != null ) |
| { |
| try |
| { |
| zip.close(); |
| } |
| catch( IOException e ) {} |
| } |
| } |
| } |
| } |
| } |
| |
| for( Map.Entry<String,Integer> entry : classAppearanceCounts.entrySet() ) |
| { |
| final int count = entry.getValue(); |
| |
| if( count != 1 ) |
| { |
| final String classFileName = entry.getKey(); |
| final String className = this.classFileNameToClassName.get( classFileName ); |
| final String message; |
| |
| if( count == 0 ) |
| { |
| message = Resources.bind( Resources.classNotFound, className ); |
| } |
| else |
| { |
| message = Resources.bind( Resources.classPresentMultipleTimes, className ); |
| } |
| |
| return new Status( IStatus.ERROR, PLUGIN_ID, message ); |
| } |
| } |
| |
| return Status.OK_STATUS; |
| } |
| |
| private static final class Resources |
| |
| extends NLS |
| |
| { |
| public static String classNotFound; |
| public static String classPresentMultipleTimes; |
| |
| static |
| { |
| initializeMessages( KeyClassesValidator.class.getName(), |
| Resources.class ); |
| } |
| } |
| |
| } |