1 /* 2 * ProGuard -- shrinking, optimization, obfuscation, and preverification 3 * of Java bytecode. 4 * 5 * Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu) 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the Free 9 * Software Foundation; either version 2 of the License, or (at your option) 10 * any later version. 11 * 12 * This program is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15 * more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, write to the Free Software Foundation, Inc., 19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 package proguard.ant; 22 23 import org.apache.tools.ant.*; 24 import org.apache.tools.ant.types.*; 25 import proguard.*; 26 27 import java.io.*; 28 import java.util.Properties; 29 30 /** 31 * This DataType represents a reference to an XML-style ProGuard configuration 32 * in Ant, or a file set of ProGuard-style configuration files. 33 * 34 * @author Eric Lafortune 35 */ 36 public class ConfigurationElement extends FileSet 37 { 38 /** 39 * Adds the contents of this configuration element to the given 40 * configuration. 41 * @param configuration the configuration to be extended. 42 */ appendTo(Configuration configuration)43 public void appendTo(Configuration configuration) 44 { 45 File baseDir; 46 String[] fileNames; 47 48 if (isReference()) 49 { 50 // Get the referenced path or file set. 51 Object referencedObject = getCheckedRef(Object.class, 52 Object.class.getName()); 53 54 if (referencedObject instanceof ConfigurationTask) 55 { 56 // The reference doesn't point to a file set, but to a 57 // configuration task. 58 ConfigurationTask configurationTask = 59 (ConfigurationTask)referencedObject; 60 61 // Append the contents of the referenced configuration to the 62 // current configuration. 63 configurationTask.appendTo(configuration); 64 65 return; 66 } 67 else if (referencedObject instanceof AbstractFileSet) 68 { 69 AbstractFileSet fileSet = (AbstractFileSet)referencedObject; 70 71 // Get the names of the existing input files in the referenced file set. 72 DirectoryScanner scanner = fileSet.getDirectoryScanner(getProject()); 73 baseDir = scanner.getBasedir(); 74 fileNames = scanner.getIncludedFiles(); 75 } 76 else 77 { 78 throw new BuildException("The refid attribute doesn't point to a <proguardconfiguration> element or a <fileset> element"); 79 } 80 } 81 else 82 { 83 // Get the names of the existing input files in the referenced file set. 84 DirectoryScanner scanner = getDirectoryScanner(getProject()); 85 baseDir = scanner.getBasedir(); 86 fileNames = scanner.getIncludedFiles(); 87 } 88 89 // Get the combined system properties and Ant properties, for 90 // replacing ProGuard-style properties ('<...>'). 91 Properties properties = new Properties(); 92 properties.putAll(getProject().getProperties()); 93 94 try 95 { 96 // Append the contents of the configuration files to the current 97 // configuration. 98 for (int index = 0; index < fileNames.length; index++) 99 { 100 File configurationFile = new File(baseDir, fileNames[index]); 101 102 ConfigurationParser parser = 103 new ConfigurationParser(configurationFile, properties); 104 try 105 { 106 parser.parse(configuration); 107 } 108 catch (ParseException ex) 109 { 110 throw new BuildException(ex.getMessage()); 111 } 112 finally 113 { 114 parser.close(); 115 } 116 } 117 } 118 catch (IOException ex) 119 { 120 throw new BuildException(ex.getMessage()); 121 } 122 } 123 } 124