Mercurial > hg > truffle
view graal/com.oracle.max.base/src/com/sun/max/program/ClasspathTraversal.java @ 4186:71a2cd79c375
Made stdout for mx unbuffered.
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 03 Jan 2012 13:53:38 +0100 |
parents | e233f5660da4 |
children |
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/* * Copyright (c) 2007, 2011, 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. * * 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 com.sun.max.program; import java.io.*; import java.util.*; import java.util.zip.*; import com.sun.max.io.*; import com.sun.max.program.Classpath.*; /** * Provides a facility for processing all the resources reachable on a given {@linkplain Classpath classpath}. */ public class ClasspathTraversal { /** * Handles a standard file resource encountered during the traversal. * * @param parent the classpath directory entry under which the resource is located * @param resource the path of the resource relative to {@code parent}. The * {@linkplain File#separatorChar platform specific} character is used as the path separator in this * value. * @return true if the traversal should continue, false if it should terminate */ protected boolean visitFile(File parent, String resource) { return true; } /** * Handles an archive entry resource encountered during the traversal. * * @param archive the classpath .zip or .jar entry in which the resource is located * @param resource the archive entry holding the resource * @return true if the traversal should continue, false if it should terminate */ protected boolean visitArchiveEntry(ZipFile archive, ZipEntry resource) { return true; } /** * Traverses all the resources reachable on a given classpath. * * @param classpath the classpath to search */ public void run(final Classpath classpath) { run(classpath, null); } /** * Traverses all the resources reachable on a given classpath. * * @param classpath the classpath to search * @param resourcePrefixFilter if non-null, then only resources whose name begins with this value are traversed. The * '/' character must be used in this value as the path separator regardless of the * {@linkplain File#separatorChar default} for the underlying platform. */ public void run(final Classpath classpath, String resourcePrefixFilter) { for (final Entry entry : classpath.entries()) { if (entry.isDirectory()) { final String prefix = entry.path() + File.separator; final File startFile; if (resourcePrefixFilter == null) { startFile = entry.file(); } else { if (File.separatorChar != '/') { startFile = new File(entry.file(), resourcePrefixFilter.replace('/', File.separatorChar)); } else { startFile = new File(entry.file(), resourcePrefixFilter); } } final FileTraversal fileTraversal = new FileTraversal() { @Override protected void visitFile(File file) { final String path = file.getPath(); assert path.startsWith(prefix); final String resource = path.substring(prefix.length()); if (!ClasspathTraversal.this.visitFile(entry.file(), resource)) { stop(); } } }; fileTraversal.run(startFile); if (fileTraversal.wasStopped()) { return; } } else if (entry.isArchive()) { final ZipFile zipFile = entry.zipFile(); if (zipFile != null) { for (final Enumeration<? extends ZipEntry> e = zipFile.entries(); e.hasMoreElements();) { final ZipEntry zipEntry = e.nextElement(); if (resourcePrefixFilter == null || zipEntry.getName().startsWith(resourcePrefixFilter)) { if (!visitArchiveEntry(zipFile, zipEntry)) { return; } } } } } } } }