1 /*
   2  * Copyright (c) 2002, 2003, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.internal.loader;
  27 
  28 import java.net.URL;
  29 import java.io.File;
  30 import sun.net.www.ParseUtil;
  31 
  32 /**
  33  * (Windows) Platform specific handling for file: URLs . In particular deals
  34  * with network paths mapping them to UNCs.
  35  *
  36  * @author      Michael McMahon
  37  */
  38 
  39 public class FileURLMapper {
  40 
  41     URL url;
  42     String file;
  43 
  44     public FileURLMapper (URL url) {
  45         this.url = url;
  46     }
  47 
  48     /**
  49      * @return the platform specific path corresponding to the URL, and in particular
  50      *  returns a UNC when the authority contains a hostname
  51      */
  52 
  53     public String getPath () {
  54         if (file != null) {
  55             return file;
  56         }
  57         String host = url.getHost();
  58         if (host != null && !host.equals("") &&
  59             !"localhost".equalsIgnoreCase(host)) {
  60             String rest = url.getFile();
  61             String s = host + ParseUtil.decode (url.getFile());
  62             file = "\\\\"+ s.replace('/', '\\');
  63             return file;
  64         }
  65         String path = url.getFile().replace('/', '\\');
  66         file = ParseUtil.decode(path);
  67         return file;
  68     }
  69 
  70     public boolean exists() {
  71         String path = getPath();
  72         File f = new File (path);
  73         return f.exists();
  74     }
  75 }