| /* |
| * Copyright (c) 1994, 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.tools.java; |
| |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.zip.*; |
| |
| /** |
| * This class is used to represent a class path, which can contain both |
| * directories and zip files. |
| * |
| * WARNING: The contents of this source file are not part of any |
| * supported API. Code that depends on them does so at its own risk: |
| * they are subject to change or removal without notice. |
| */ |
| public |
| class ClassPath { |
| static final char dirSeparator = File.pathSeparatorChar; |
| |
| /** |
| * The original class path string |
| */ |
| String pathstr; |
| |
| /** |
| * List of class path entries |
| */ |
| private ClassPathEntry[] path; |
| |
| /** |
| * Build a class path from the specified path string |
| */ |
| public ClassPath(String pathstr) { |
| init(pathstr); |
| } |
| |
| /** |
| * Build a class path from the specified array of class path |
| * element strings. This constructor, and the corresponding |
| * "init" method, were added as part of the fix for 6473331, which |
| * adds support for Class-Path manifest entries in JAR files to |
| * rmic. It is conceivable that the value of a Class-Path |
| * manifest entry will contain a path separator, which would cause |
| * incorrect behavior if the expanded path were passed to the |
| * previous constructor as a single path-separator-delimited |
| * string; use of this constructor avoids that problem. |
| */ |
| public ClassPath(String[] patharray) { |
| init(patharray); |
| } |
| |
| /** |
| * Build a default class path from the path strings specified by |
| * the properties sun.boot.class.path and env.class.path, in that |
| * order. |
| */ |
| public ClassPath() { |
| String syscp = System.getProperty("sun.boot.class.path"); |
| String envcp = System.getProperty("env.class.path"); |
| if (envcp == null) envcp = "."; |
| String cp = syscp + File.pathSeparator + envcp; |
| init(cp); |
| } |
| |
| private void init(String pathstr) { |
| int i, j, n; |
| // Save original class path string |
| this.pathstr = pathstr; |
| |
| if (pathstr.length() == 0) { |
| this.path = new ClassPathEntry[0]; |
| } |
| |
| // Count the number of path separators |
| i = n = 0; |
| while ((i = pathstr.indexOf(dirSeparator, i)) != -1) { |
| n++; i++; |
| } |
| // Build the class path |
| ClassPathEntry[] path = new ClassPathEntry[n+1]; |
| int len = pathstr.length(); |
| for (i = n = 0; i < len; i = j + 1) { |
| if ((j = pathstr.indexOf(dirSeparator, i)) == -1) { |
| j = len; |
| } |
| if (i == j) { |
| path[n] = new ClassPathEntry(); |
| path[n++].dir = new File("."); |
| } else { |
| File file = new File(pathstr.substring(i, j)); |
| if (file.isFile()) { |
| try { |
| ZipFile zip = new ZipFile(file); |
| path[n] = new ClassPathEntry(); |
| path[n++].zip = zip; |
| } catch (ZipException e) { |
| } catch (IOException e) { |
| // Ignore exceptions, at least for now... |
| } |
| } else { |
| path[n] = new ClassPathEntry(); |
| path[n++].dir = file; |
| } |
| } |
| } |
| // Trim class path to exact size |
| this.path = new ClassPathEntry[n]; |
| System.arraycopy((Object)path, 0, (Object)this.path, 0, n); |
| } |
| |
| private void init(String[] patharray) { |
| // Save original class path string |
| if (patharray.length == 0) { |
| this.pathstr = ""; |
| } else { |
| StringBuilder sb = new StringBuilder(patharray[0]); |
| for (int i = 1; i < patharray.length; i++) { |
| sb.append(File.pathSeparatorChar); |
| sb.append(patharray[i]); |
| } |
| this.pathstr = sb.toString(); |
| } |
| |
| // Build the class path |
| ClassPathEntry[] path = new ClassPathEntry[patharray.length]; |
| int n = 0; |
| for (String name : patharray) { |
| File file = new File(name); |
| if (file.isFile()) { |
| try { |
| ZipFile zip = new ZipFile(file); |
| path[n] = new ClassPathEntry(); |
| path[n++].zip = zip; |
| } catch (ZipException e) { |
| } catch (IOException e) { |
| // Ignore exceptions, at least for now... |
| } |
| } else { |
| path[n] = new ClassPathEntry(); |
| path[n++].dir = file; |
| } |
| } |
| // Trim class path to exact size |
| this.path = new ClassPathEntry[n]; |
| System.arraycopy((Object)path, 0, (Object)this.path, 0, n); |
| } |
| |
| /** |
| * Find the specified directory in the class path |
| */ |
| public ClassFile getDirectory(String name) { |
| return getFile(name, true); |
| } |
| |
| /** |
| * Load the specified file from the class path |
| */ |
| public ClassFile getFile(String name) { |
| return getFile(name, false); |
| } |
| |
| private final String fileSeparatorChar = "" + File.separatorChar; |
| |
| private ClassFile getFile(String name, boolean isDirectory) { |
| String subdir = name; |
| String basename = ""; |
| if (!isDirectory) { |
| int i = name.lastIndexOf(File.separatorChar); |
| subdir = name.substring(0, i + 1); |
| basename = name.substring(i + 1); |
| } else if (!subdir.equals("") |
| && !subdir.endsWith(fileSeparatorChar)) { |
| // zip files are picky about "foo" vs. "foo/". |
| // also, the getFiles caches are keyed with a trailing / |
| subdir = subdir + File.separatorChar; |
| name = subdir; // Note: isDirectory==true & basename=="" |
| } |
| for (int i = 0; i < path.length; i++) { |
| if (path[i].zip != null) { |
| String newname = name.replace(File.separatorChar, '/'); |
| ZipEntry entry = path[i].zip.getEntry(newname); |
| if (entry != null) { |
| return new ClassFile(path[i].zip, entry); |
| } |
| } else { |
| File file = new File(path[i].dir.getPath(), name); |
| String list[] = path[i].getFiles(subdir); |
| if (isDirectory) { |
| if (list.length > 0) { |
| return new ClassFile(file); |
| } |
| } else { |
| for (int j = 0; j < list.length; j++) { |
| if (basename.equals(list[j])) { |
| // Don't bother checking !file.isDir, |
| // since we only look for names which |
| // cannot already be packages (foo.java, etc). |
| return new ClassFile(file); |
| } |
| } |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns list of files given a package name and extension. |
| */ |
| public Enumeration getFiles(String pkg, String ext) { |
| Hashtable files = new Hashtable(); |
| for (int i = path.length; --i >= 0; ) { |
| if (path[i].zip != null) { |
| Enumeration e = path[i].zip.entries(); |
| while (e.hasMoreElements()) { |
| ZipEntry entry = (ZipEntry)e.nextElement(); |
| String name = entry.getName(); |
| name = name.replace('/', File.separatorChar); |
| if (name.startsWith(pkg) && name.endsWith(ext)) { |
| files.put(name, new ClassFile(path[i].zip, entry)); |
| } |
| } |
| } else { |
| String[] list = path[i].getFiles(pkg); |
| for (int j = 0; j < list.length; j++) { |
| String name = list[j]; |
| if (name.endsWith(ext)) { |
| name = pkg + File.separatorChar + name; |
| File file = new File(path[i].dir.getPath(), name); |
| files.put(name, new ClassFile(file)); |
| } |
| } |
| } |
| } |
| return files.elements(); |
| } |
| |
| /** |
| * Release resources. |
| */ |
| public void close() throws IOException { |
| for (int i = path.length; --i >= 0; ) { |
| if (path[i].zip != null) { |
| path[i].zip.close(); |
| } |
| } |
| } |
| |
| /** |
| * Returns original class path string |
| */ |
| public String toString() { |
| return pathstr; |
| } |
| } |
| |
| /** |
| * A class path entry, which can either be a directory or an open zip file. |
| */ |
| class ClassPathEntry { |
| File dir; |
| ZipFile zip; |
| |
| Hashtable subdirs = new Hashtable(29); // cache of sub-directory listings |
| String[] getFiles(String subdir) { |
| String files[] = (String[]) subdirs.get(subdir); |
| if (files == null) { |
| // search the directory, exactly once |
| File sd = new File(dir.getPath(), subdir); |
| if (sd.isDirectory()) { |
| files = sd.list(); |
| if (files == null) { |
| // should not happen, but just in case, fail silently |
| files = new String[0]; |
| } |
| if (files.length == 0) { |
| String nonEmpty[] = { "" }; |
| files = nonEmpty; |
| } |
| } else { |
| files = new String[0]; |
| } |
| subdirs.put(subdir, files); |
| } |
| return files; |
| } |
| |
| } |