FileSystemResourceExporter


1   /*******************************************************************************
2    * Copyright (c) 2000, 2004 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    *
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  package org.eclipse.ui.internal.ide.dialogs;
12  
13  import java.io.File  ;
14  import java.io.FileOutputStream  ;
15  import java.io.IOException  ;
16  import java.io.InputStream  ;
17  
18  import org.eclipse.core.resources.IContainer;
19  import org.eclipse.core.resources.IFile;
20  import org.eclipse.core.resources.IResource;
21  import org.eclipse.core.runtime.CoreException;
22  import org.eclipse.core.runtime.IPath;
23  
24  /**
25   * Helper class for exporting resources to the file system.
26   */
27  /*package*/class FileSystemResourceExporter {
28      /**
29       *  Creates the specified file system directory at <code>destinationPath</code>.
30       *  This creates a new file system directory.
31       */
32      public void createFolder(IPath destinationPath) {
33          new File  (destinationPath.toOSString()).mkdir();
34      }
35  
36      /**
37       *  Writes the passed resource to the specified location recursively
38       */
39      public void write(IResource resource, IPath destinationPath)
40              throws CoreException, IOException   {
41          if (resource.getType() == IResource.FILE)
42              writeFile((IFile) resource, destinationPath);
43          else
44              writeChildren((IContainer) resource, destinationPath);
45      }
46  
47      /**
48       *  Exports the passed container's children
49       */
50      protected void writeChildren(IContainer folder, IPath destinationPath)
51              throws CoreException, IOException   {
52          if (folder.isAccessible()) {
53              IResource[] children = folder.members();
54              for (int i = 0; i < children.length; i++) {
55                  IResource child = children[i];
56                  writeResource(child, destinationPath.append(child.getName()));
57              }
58          }
59      }
60  
61      /**
62       *  Writes the passed file resource to the specified destination on the local
63       *  file system
64       */
65      protected void writeFile(IFile file, IPath destinationPath)
66              throws IOException  , CoreException {
67          FileOutputStream   output = null;
68          InputStream   contentStream = null;
69  
70          try {
71              output = new FileOutputStream  (destinationPath.toOSString());
72              contentStream = file.getContents(false);
73              int chunkSize = contentStream.available();
74              byte[] readBuffer = new byte[chunkSize];
75              int n = contentStream.read(readBuffer);
76  
77              while (n > 0) {
78                  output.write(readBuffer);
79                  n = contentStream.read(readBuffer);
80              }
81          } finally {
82              if (output != null)
83                  output.close();
84              if (contentStream != null)
85                  contentStream.close();
86          }
87      }
88  
89      /**
90       *  Writes the passed resource to the specified location recursively
91       */
92      protected void writeResource(IResource resource, IPath destinationPath)
93              throws CoreException, IOException   {
94          if (resource.getType() == IResource.FILE)
95              writeFile((IFile) resource, destinationPath);
96          else {
97              createFolder(destinationPath);
98              writeChildren((IContainer) resource, destinationPath);
99          }
100     }
101 }
102
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags