1 /*

     2  * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  *

     8  *   - Redistributions of source code must retain the above copyright

     9  *     notice, this list of conditions and the following disclaimer.

    10  *

    11  *   - Redistributions in binary form must reproduce the above copyright

    12  *     notice, this list of conditions and the following disclaimer in the

    13  *     documentation and/or other materials provided with the distribution.

    14  *

    15  *   - Neither the name of Oracle nor the names of its

    16  *     contributors may be used to endorse or promote products derived

    17  *     from this software without specific prior written permission.

    18  *

    19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

    20  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

    21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

    23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

    27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

    28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

    29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    30  */

    31 

    32 /*

    33  * This source code is provided to illustrate the usage of a given feature

    34  * or technique and has been deliberately simplified. Additional steps

    35  * required for a production-quality application, such as security checks,

    36  * input validation and proper error handling, might not be present in

    37  * this sample code.

    38  */

    39 

    40 package com.sun.nio.zipfs;

    41 

    42 import java.nio.file.*;

    43 import java.nio.file.spi.*;

    44 import java.nio.file.attribute.*;

    45 import java.nio.file.spi.FileSystemProvider;

    46 

    47 import java.net.URI;

    48 import java.io.IOException;

    49 import java.net.URISyntaxException;

    50 import java.nio.channels.FileChannel;

    51 import java.util.HashMap;

    52 import java.util.Map;

    53 import java.util.Set;

    54 

    55 public class JarFileSystemProvider extends ZipFileSystemProvider

    56 {

    57 

    58     @Override

    59     public String getScheme() {

    60         return "jar";

    61     }

    62 

    63     @Override

    64     protected Path uriToPath(URI uri) {

    65         String scheme = uri.getScheme();

    66         if ((scheme == null) || !scheme.equalsIgnoreCase(getScheme())) {

    67             throw new IllegalArgumentException("URI scheme is not '" + getScheme() + "'");

    68         }

    69         try {

    70             String uristr = uri.toString();

    71             int end = uristr.indexOf("!/");

    72             uristr = uristr.substring(4, (end == -1) ? uristr.length() : end);

    73             uri = new URI(uristr);

    74             return Paths.get(new URI("file", uri.getHost(), uri.getPath(), null))

    75                         .toAbsolutePath();

    76         } catch (URISyntaxException e) {

    77             throw new AssertionError(e); //never thrown

    78         }

    79     }

    80 

    81     @Override

    82     public Path getPath(URI uri) {

    83         FileSystem fs = getFileSystem(uri);

    84         String path = uri.getFragment();

    85         if (path == null) {

    86             String uristr = uri.toString();

    87             int off = uristr.indexOf("!/");

    88             if (off != -1)

    89                 path = uristr.substring(off + 2);

    90         }

    91         if (path != null)

    92             return fs.getPath(path);

    93         throw new IllegalArgumentException("URI: "

    94             + uri

    95             + " does not contain path fragment ex. jar:///c:/foo.zip!/BAR");

    96     }

    97 }