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/* * Copyright (c) 1998, 2008, 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 com.sun.tools.example.debug.gui; import java.io.*;import java.util.*; public class SearchPath {     private String pathString;     private String[] pathArray;     public SearchPath(String searchPath) {        //### Should check searchpath for well-formedness.        StringTokenizer st = new StringTokenizer(searchPath, File.pathSeparator);        List<String> dlist = new ArrayList<String>();        while (st.hasMoreTokens()) {            dlist.add(st.nextToken());        }        pathString = searchPath;        pathArray = dlist.toArray(new String[dlist.size()]);    }     public boolean isEmpty() {        return (pathArray.length == 0);    }     public String asString() {        return pathString;    }     public String[] asArray() {        return pathArray.clone();    }     public File resolve(String relativeFileName) {        for (String element : pathArray) {            File path = new File(element, relativeFileName);            if (path.exists()) {                return path;            }        }        return null;    }     //### return List?     public String[] children(String relativeDirName, FilenameFilter filter) {        // If a file appears at the same relative path        // with respect to multiple entries on the classpath,        // the one corresponding to the earliest entry on the        // classpath is retained.  This is the one that will be        // found if we later do a 'resolve'.        SortedSet<String> s = new TreeSet<String>();  // sorted, no duplicates        for (String element : pathArray) {            File path = new File(element, relativeDirName);            if (path.exists()) {                String[] childArray = path.list(filter);                if (childArray != null) {                    for (int j = 0; j < childArray.length; j++) {                        if (!s.contains(childArray[j])) {                            s.add(childArray[j]);                        }                    }                }            }        }        return s.toArray(new String[s.size()]);    } }