001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2009 SonarSource SA
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.squid.bytecode.asm;
021    
022    import java.io.File;
023    import java.io.FileInputStream;
024    import java.io.FileNotFoundException;
025    import java.io.IOException;
026    import java.io.InputStream;
027    
028    import org.objectweb.asm.ClassReader;
029    import org.sonar.squid.api.AnalysisException;
030    
031    public class AsmClassReader {
032    
033      public AsmClass readClass(InputStream reader) {
034        try {
035          AsmClassVisitor classVisitor = new AsmClassVisitor();
036          ClassReader asmReader = new ClassReader(reader);
037          asmReader.accept(classVisitor, 0);
038          return classVisitor.getAsmClass();
039        } catch (IOException e) {
040          throw new AnalysisException("Unable to read bytecode", e);
041        }
042      }
043    
044      public AsmClass readClass(String className) {
045        return readClass(ClassLoader.getSystemResourceAsStream(className));
046      }
047    
048      public AsmClass readClass(File file) {
049        try {
050          return readClass(new FileInputStream(file));
051        } catch (FileNotFoundException e) {
052          throw new AnalysisException("Unable to read file : " + file.getAbsolutePath(), e);
053        }
054      }
055    }