org.extendj.ast.JarFilePath Maven / Gradle / Ivy
package org.extendj.ast;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.ArrayList;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.*;
import java.util.zip.*;
import java.io.*;
import org.jastadd.util.PrettyPrintable;
import org.jastadd.util.PrettyPrinter;
import org.jastadd.util.*;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.IOException;
import java.util.Set;
import beaver.*;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentSkipListMap;
import java.io.BufferedInputStream;
import java.io.DataInputStream;
/**
* @ast class
* @aspect PathPart
* @declaredat /home/jesper/git/extendj/java4/frontend/PathPart.jadd:510
*/
public class JarFilePath extends PathPart {
private Collection packageIndex = null;
private final ZipFile jar;
private final String jarPath;
public JarFilePath(String jarPath) throws IOException {
super(false);
this.jar = new ZipFile(jarPath);
this.jarPath = jarPath;
}
public JarFilePath(File jarFile) throws IOException {
super(false);
this.jar = new ZipFile(jarFile);
this.jarPath = jarFile.getPath();
}
@Override
public String getPath() {
return jarPath;
}
private static void scanJar(ZipFile jar, Collection packages,
String fileSuffix) {
// Add all zip entries to a set so that we can quickly check if the Jar
// contains a given class.
for (Enumeration entries = jar.entries(); entries.hasMoreElements(); ) {
ZipEntry entry = (ZipEntry) entries.nextElement();
String path = entry.getName();
if (path.endsWith(fileSuffix)) {
addPackages(packages, path);
}
}
}
private static void addPackages(Collection packages, String path) {
String name = path.replace('/', '.');
int index = path.length();
do {
index = path.lastIndexOf('/', index-1);
} while (index >= 0 && packages.add(name.substring(0, index)));
}
/**
* Caches the package index from the Jar file so that subsequent calls to
* this method are quicker.
*/
@Override
public boolean hasPackage(String name) {
synchronized (this) {
if (packageIndex == null) {
packageIndex = new HashSet();
scanJar(jar, packageIndex, fileSuffix);
}
}
return packageIndex.contains(name);
}
@Override
public ClassSource findSource(String name) {
// ZipFiles always use '/' as separator
String jarName = name.replace('.', '/') + fileSuffix;
ZipEntry entry = jar.getEntry(jarName);
if (entry != null) {
return new JarClassSource(this, jar, entry, jarPath);
} else {
return ClassSource.NONE;
}
}
@Override
public String toString() {
return "jar:" + jarPath;
}
}