/*
* Copyright 2001-2002,2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.tools.ant.types.optional.depend;
import java.io.File;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DirectoryScanner;
import org.apache.tools.ant.types.Path;
import org.apache.tools.ant.util.depend.DependencyAnalyzer;
/**
* An interface used to describe the actions required by any type of
* directory scanner.
*
* @author Conor MacNeill
* @author <a href="mailto:hengels@innovidata.com">Holger Engels</a>
*/
public class DependScanner extends DirectoryScanner {
/**
* The name of the analyzer to use by default.
*/
public static final String DEFAULT_ANALYZER_CLASS
= "org.apache.tools.ant.util.depend.bcel.FullAnalyzer";
/**
* The base directory for the scan
*/
private File basedir;
/**
* The root classes to drive the search for dependent classes
*/
private Vector rootClasses;
/**
* The names of the classes to include in the fileset
*/
private Vector included;
/**
* The parent scanner which gives the basic set of files. Only files which
* are in this set and which can be reached from a root class will end
* up being included in the result set
*/
private DirectoryScanner parentScanner;
/**
* Create a DependScanner, using the given scanner to provide the basic
* set of files from which class files come.
*
* @param parentScanner the DirectoryScanner which returns the files from
* which class files must come.
*/
public DependScanner(DirectoryScanner parentScanner) {
this.parentScanner = parentScanner;
}
/**
* Sets the basedir for scanning. This is the directory that is scanned
* recursively.
*
* @param basedir the basedir for scanning
*/
public void setBasedir(File basedir) {
this.basedir = basedir;
}
/**
* Gets the basedir that is used for scanning.
*
* @return the basedir that is used for scanning
*/
public File getBasedir() { return basedir; }
/**
* Sets the root classes to be used to drive the scan.
*
* @param rootClasses the rootClasses to be used for this scan
*/
public void setRootClasses(Vector rootClasses) {
this.rootClasses = rootClasses;
}
/**
* Get the names of the class files, baseClass depends on
*
* @return the names of the files
*/
public String[] getIncludedFiles() {
int count = included.size();
String[] files = new String[count];
for (int i = 0; i < count; i++) {
files[i] = (String) included.elementAt(i);
}
return files;
}
/**
* Scans the base directory for files that baseClass depends on
*
* @exception IllegalStateException when basedir was set incorrecly
*/
public void scan() throws IllegalStateException {
included = new Vector();
String analyzerClassName = DEFAULT_ANALYZER_CLASS;
DependencyAnalyzer analyzer = null;
try {
Class analyzerClass = Class.forName(analyzerClassName);
analyzer = (DependencyAnalyzer) analyzerClass.newInstance();
} catch (Exception e) {
throw new BuildException("Unable to load dependency analyzer: "
+ analyzerClassName, e);
}
analyzer.addClassPath(new Path(null, basedir.getPath()));
for (Enumeration e = rootClasses.elements(); e.hasMoreElements();) {
String rootClass = (String) e.nextElement();
analyzer.addRootClass(rootClass);
}
Enumeration e = analyzer.getClassDependencies();
String[] parentFiles = parentScanner.getIncludedFiles();
Hashtable parentSet = new Hashtable();
for (int i = 0; i < parentFiles.length; ++i) {
parentSet.put(parentFiles[i], parentFiles[i]);
}
while (e.hasMoreElements()) {
String classname = (String) e.nextElement();
String filename = classname.replace('.', File.separatorChar);
filename = filename + ".class";
File depFile = new File(basedir, filename);
if (depFile.exists() && parentSet.containsKey(filename)) {
// This is included
included.addElement(filename);
}
}
}
/**
* @see DirectoryScanner#addDefaultExcludes
*/
public void addDefaultExcludes() {
}
/**
* @see DirectoryScanner#getExcludedDirectories
*/
public String[] getExcludedDirectories() {
return null;
}
/**
* @see DirectoryScanner#getExcludedFiles
*/
public String[] getExcludedFiles() {
return null;
}
/**
* @see DirectoryScanner#getIncludedDirectories
*/
public String[] getIncludedDirectories() {
return new String[0];
}
/**
* @see DirectoryScanner#getNotIncludedDirectories
*/
public String[] getNotIncludedDirectories() {
return null;
}
/**
* @see DirectoryScanner#getNotIncludedFiles
*/
public String[] getNotIncludedFiles() {
return null;
}
/**
* @see DirectoryScanner#setExcludes
*/
public void setExcludes(String[] excludes) {
}
/**
* @see DirectoryScanner#setIncludes
*/
public void setIncludes(String[] includes) {
}
/**
* @see DirectoryScanner#setCaseSensitive
*/
public void setCaseSensitive(boolean isCaseSensitive) {
}
}