123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378 |
- package org.aspectj.apache.bcel.util;
-
- /* ====================================================================
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2001 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Apache" and "Apache Software Foundation" and
- * "Apache BCEL" must not be used to endorse or promote products
- * derived from this software without prior written permission. For
- * written permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * "Apache BCEL", nor may "Apache" appear in their name, without
- * prior written permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
-
- import java.util.*;
- import java.util.zip.*;
- import java.io.*;
-
- /**
- * Responsible for loading (class) files from the CLASSPATH. Inspired by
- * sun.tools.ClassPath.
- *
- * @version $Id: ClassPath.java,v 1.5 2009/09/09 19:56:20 aclement Exp $
- * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
- */
- public class ClassPath implements Serializable {
- private static ClassPath SYSTEM_CLASS_PATH = null;
-
- private PathEntry[] paths;
- private String class_path;
-
- public static ClassPath getSystemClassPath() {
- if (SYSTEM_CLASS_PATH == null) {
- SYSTEM_CLASS_PATH = new ClassPath();
- }
- return SYSTEM_CLASS_PATH;
- }
- /**
- * Search for classes in given path.
- */
- public ClassPath(String class_path) {
- this.class_path = class_path;
-
- ArrayList<PathEntry> vec = new ArrayList<PathEntry>();
-
- for(StringTokenizer tok=new StringTokenizer(class_path,
- System.getProperty("path.separator"));
- tok.hasMoreTokens();)
- {
- String path = tok.nextToken();
-
- if(!path.equals("")) {
- File file = new File(path);
-
- try {
- if(file.exists()) {
- if(file.isDirectory())
- vec.add(new Dir(path));
- else
- vec.add(new Zip(new ZipFile(file)));
- }
- } catch(IOException e) {
- System.err.println("CLASSPATH component " + file + ": " + e);
- }
- }
- }
-
- paths = new PathEntry[vec.size()];
- vec.toArray(paths);
- }
-
- /**
- * Search for classes in CLASSPATH.
- * @deprecated Use SYSTEM_CLASS_PATH constant
- */
- public ClassPath() {
- this(getClassPath());
- }
-
- /** @return used class path string
- */
- public String toString() {
- return class_path;
- }
-
- public int hashCode() {
- return class_path.hashCode();
- }
-
- public boolean equals(Object o) {
- if(o instanceof ClassPath) {
- return class_path.equals(((ClassPath)o).class_path);
- }
-
- return false;
- }
-
- private static final void getPathComponents(String path, ArrayList<String> list) {
- if(path != null) {
- StringTokenizer tok = new StringTokenizer(path, File.pathSeparator);
-
- while(tok.hasMoreTokens()) {
- String name = tok.nextToken();
- File file = new File(name);
-
- if(file.exists())
- list.add(name);
- }
- }
- }
-
- /** Checks for class path components in the following properties:
- * "java.class.path", "sun.boot.class.path", "java.ext.dirs"
- *
- * @return class path as used by default by BCEL
- */
- public static final String getClassPath() {
- String class_path = System.getProperty("java.class.path");
- String boot_path = System.getProperty("sun.boot.class.path");
- String ext_path = System.getProperty("java.ext.dirs");
-
- ArrayList<String> list = new ArrayList<String>();
-
- getPathComponents(class_path, list);
- getPathComponents(boot_path, list);
-
- ArrayList<String> dirs = new ArrayList<String>();
- getPathComponents(ext_path, dirs);
-
- for(Iterator<String> e = dirs.iterator(); e.hasNext(); ) {
- File ext_dir = new File(e.next());
- String[] extensions = ext_dir.list(new FilenameFilter() {
- public boolean accept(File dir, String name) {
- name = name.toLowerCase();
- return name.endsWith(".zip") || name.endsWith(".jar");
- }
- });
-
- if(extensions != null)
- for(int i=0; i < extensions.length; i++)
- list.add(ext_path + File.separatorChar + extensions[i]);
- }
-
- StringBuffer buf = new StringBuffer();
-
- for(Iterator<String> e = list.iterator(); e.hasNext(); ) {
- buf.append(e.next());
-
- if(e.hasNext())
- buf.append(File.pathSeparatorChar);
- }
-
- return buf.toString().intern();
- }
-
- /**
- * @param name fully qualified class name, e.g. java.lang.String
- * @return input stream for class
- */
- public InputStream getInputStream(String name) throws IOException {
- return getInputStream(name, ".class");
- }
-
- /**
- * Return stream for class or resource on CLASSPATH.
- *
- * @param name fully qualified file name, e.g. java/lang/String
- * @param suffix file name ends with suff, e.g. .java
- * @return input stream for file on class path
- */
- public InputStream getInputStream(String name, String suffix) throws IOException {
- InputStream is = null;
-
- try {
- is = getClass().getClassLoader().getResourceAsStream(name + suffix);
- } catch(Exception e) { }
-
- if(is != null)
- return is;
-
- return getClassFile(name, suffix).getInputStream();
- }
-
- /**
- * @param name fully qualified file name, e.g. java/lang/String
- * @param suffix file name ends with suff, e.g. .java
- * @return class file for the java class
- */
- public ClassFile getClassFile(String name, String suffix) throws IOException {
- for(int i=0; i < paths.length; i++) {
- ClassFile cf;
-
- if((cf = paths[i].getClassFile(name, suffix)) != null)
- return cf;
- }
-
- throw new IOException("Couldn't find: " + name + suffix);
- }
-
- /**
- * @param name fully qualified class name, e.g. java.lang.String
- * @return input stream for class
- */
- public ClassFile getClassFile(String name) throws IOException {
- return getClassFile(name, ".class");
- }
-
- /**
- * @param name fully qualified file name, e.g. java/lang/String
- * @param suffix file name ends with suffix, e.g. .java
- * @return byte array for file on class path
- */
- public byte[] getBytes(String name, String suffix) throws IOException {
- InputStream is = getInputStream(name, suffix);
-
- if(is == null)
- throw new IOException("Couldn't find: " + name + suffix);
-
- DataInputStream dis = new DataInputStream(is);
- byte[] bytes = new byte[is.available()];
- dis.readFully(bytes);
- dis.close(); is.close();
-
- return bytes;
- }
-
- /**
- * @return byte array for class
- */
- public byte[] getBytes(String name) throws IOException {
- return getBytes(name, ".class");
- }
-
- /**
- * @param name name of file to search for, e.g. java/lang/String.java
- * @return full (canonical) path for file
- */
- public String getPath(String name) throws IOException {
- int index = name.lastIndexOf('.');
- String suffix = "";
-
- if(index > 0) {
- suffix = name.substring(index);
- name = name.substring(0, index);
- }
-
- return getPath(name, suffix);
- }
-
- /**
- * @param name name of file to search for, e.g. java/lang/String
- * @param suffix file name suffix, e.g. .java
- * @return full (canonical) path for file, if it exists
- */
- public String getPath(String name, String suffix) throws IOException {
- return getClassFile(name, suffix).getPath();
- }
-
- private static abstract class PathEntry implements Serializable {
- abstract ClassFile getClassFile(String name, String suffix) throws IOException;
- }
-
- /** Contains information about file/ZIP entry of the Java class.
- */
- public interface ClassFile {
- /** @return input stream for class file.
- */
- public abstract InputStream getInputStream() throws IOException;
-
- /** @return canonical path to class file.
- */
- public abstract String getPath();
-
- /** @return base path of found class, i.e. class is contained relative
- * to that path, which may either denote a directory, or zip file
- */
- public abstract String getBase();
-
- /** @return modification time of class file.
- */
- public abstract long getTime();
-
- /** @return size of class file.
- */
- public abstract long getSize();
- }
-
- private static class Dir extends PathEntry {
- private String dir;
-
- Dir(String d) { dir = d; }
-
- ClassFile getClassFile(String name, String suffix) throws IOException {
- final File file = new File(dir + File.separatorChar +
- name.replace('.', File.separatorChar) + suffix);
-
- return file.exists()? new ClassFile() {
- public InputStream getInputStream() throws IOException { return new FileInputStream(file); }
-
- public String getPath() { try {
- return file.getCanonicalPath();
- } catch(IOException e) { return null; }
-
- }
- public long getTime() { return file.lastModified(); }
- public long getSize() { return file.length(); }
- public String getBase() { return dir; }
-
- } : null;
- }
-
- public String toString() { return dir; }
- }
-
- private static class Zip extends PathEntry {
- private ZipFile zip;
-
- Zip(ZipFile z) { zip = z; }
-
- ClassFile getClassFile(String name, String suffix) throws IOException {
- final ZipEntry entry = zip.getEntry(name.replace('.', '/') + suffix);
-
- return (entry != null)? new ClassFile() {
- public InputStream getInputStream() throws IOException { return zip.getInputStream(entry); }
- public String getPath() { return entry.toString(); }
- public long getTime() { return entry.getTime(); }
- public long getSize() { return entry.getSize(); }
- public String getBase() {
- return zip.getName();
- }
- } : null;
- }
- }
- }
-
|