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/* $Id: ClassFileNameFilter.java,v 1.8 2004/08/15 12:39:30 eric Exp $
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* ProGuard -- shrinking, optimization, and obfuscation of Java class files.
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* Copyright (c) 2002-2004 Eric Lafortune (eric@graphics.cornell.edu)
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package proguard.classfile.visitor;
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import proguard.classfile.*;
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import proguard.util.*;
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* This <code>ClassFileVisitor</code> delegates its visits to another given
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* <code>ClassFileVisitor</code>, but only when the visited class file
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* has a name that matches a given regular expression.
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* @author Eric Lafortune
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public class ClassFileNameFilter implements ClassFileVisitor
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private ClassFileVisitor classFileVisitor;
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private StringMatcher regularExpressionMatcher;
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* Creates a new ClassFileNameFilter.
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* @param classFileVisitor the <code>ClassFileVisitor</code> to which visits
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* @param regularExpression the regular expression against which class names
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public ClassFileNameFilter(ClassFileVisitor classFileVisitor,
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String regularExpression)
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this.classFileVisitor = classFileVisitor;
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this.regularExpressionMatcher = new ClassNameMatcher(regularExpression);
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// Implementations for ClassFileVisitor.
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public void visitProgramClassFile(ProgramClassFile programClassFile)
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if (accepted(programClassFile.getName()))
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classFileVisitor.visitProgramClassFile(programClassFile);
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public void visitLibraryClassFile(LibraryClassFile libraryClassFile)
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if (accepted(libraryClassFile.getName()))
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classFileVisitor.visitLibraryClassFile(libraryClassFile);
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// Small utility methods.
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private boolean accepted(String name)
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return regularExpressionMatcher.matches(name);