1 // Copyright (c) 2009 The Chromium Authors. All rights reserved.

     2 // Use of this source code is governed by a BSD-style license that can be

     3 // found in the LICENSE file.

     4 

     5 package org.chromium.debug.core.efs;

     6 

     7 import java.net.URI;

     8 import java.net.URISyntaxException;

     9 

    10 import org.chromium.debug.core.ChromiumDebugPlugin;

    11 import org.eclipse.core.filesystem.IFileStore;

    12 import org.eclipse.core.filesystem.provider.FileSystem;

    13 import org.eclipse.core.runtime.IPath;

    14 import org.eclipse.core.runtime.Path;

    15 

    16 /**

    17  * An in-memory filesystem for remote scripts.

    18  * The supported URLs are {@code chromiumdebug:///resource_path}.

    19  */

    20 public class ChromiumScriptFileSystem extends FileSystem {

    21 

    22   /** All file URLs in this filesystem have this scheme. */

    23   private static final String CHROMIUMDEBUG_SCHEME = "chromiumdebug"; //$NON-NLS-1$

    24 

    25   @Override

    26   public IFileStore getStore(URI uri) {

    27     return new ChromiumScriptFileStore(this, toPath(uri));

    28   }

    29 

    30   /**

    31    * Constructs a URI by a path.

    32    *

    33    * @param path of a filesystem resource

    34    * @return a URI corresponding to the given {@code path}

    35    */

    36   public static URI getFileStoreUri(IPath path) {

    37     try {

    38       return new URI(CHROMIUMDEBUG_SCHEME, null, path.toPortableString(), null);

    39     } catch (URISyntaxException e) {

    40       ChromiumDebugPlugin.log(e);

    41       return null;

    42     }

    43   }

    44 

    45   /**

    46    * Converts a chromiumdebug FS FileStore URI into a path relative to the FS root.

    47    *

    48    * @param uri to convert

    49    * @return the path corresponding to the uri

    50    */

    51   static IPath toPath(URI uri) {

    52     return Path.fromPortableString(uri.getPath()).setDevice(null);

    53   }

    54 

    55   /**

    56    * Converts a chromiumdebug FS FileStore path into a FS URI.

    57    *

    58    * @param path to convert

    59    * @return the URI corresponding to the given path

    60    */

    61   static URI toUri(IPath path) {

    62     try {

    63       return new URI(CHROMIUMDEBUG_SCHEME, null, path.toPortableString(), null);

    64     } catch (URISyntaxException e) {

    65       return null;

    66     }

    67   }

    68 

    69 }