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 sun.misc;

    27 

    28 import java.net.URL;

    29 import java.io.File;

    30 import sun.net.www.ParseUtil;

    31 

    32 /**

    33  * (Solaris) platform specific handling for file: URLs .

    34  * urls must not contain a hostname in the authority field

    35  * other than "localhost".

    36  *

    37  * This implementation could be updated to map such URLs

    38  * on to /net/host/...

    39  *

    40  * @author      Michael McMahon

    41  */

    42 

    43 public class FileURLMapper {

    44 

    45     URL url;

    46     String path;

    47 

    48     public FileURLMapper (URL url) {

    49         this.url = url;

    50     }

    51 

    52     /**

    53      * @return the platform specific path corresponding to the URL

    54      *  so long as the URL does not contain a hostname in the authority field.

    55      */

    56 

    57     public String getPath () {

    58         if (path != null) {

    59             return path;

    60         }

    61         String host = url.getHost();

    62         if (host == null || "".equals(host) || "localhost".equalsIgnoreCase (host)) {

    63             path = url.getFile();

    64             path = ParseUtil.decode (path);

    65         }

    66         return path;

    67     }

    68 

    69     /**

    70      * Checks whether the file identified by the URL exists.

    71      */

    72     public boolean exists () {

    73         String s = getPath ();

    74         if (s == null) {

    75             return false;

    76         } else {

    77             File f = new File (s);

    78             return f.exists();

    79         }

    80     }

    81 }