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<document>

    <properties>
        <title>Supported File Systems</title>
        <author email="dev@commons.apache.org">Apache Commons Developers</author>
    </properties>

    <body>
        <section name="Supported File Systems">
            <p>Commons VFS directly supports the following file systems with the listed
               <a href="apidocs/org/apache/commons/vfs2/Capability.html">capabilities</a>:</p>
          <table>
            <tr>
              <th>File System</th>
              <th>Directory Contents</th>
              <th>Authentication</th>
              <th>Read</th>
              <th>Write</th>
              <th>Create/Delete</th>
              <th>Random</th>
              <th>Version</th>
              <th>Rename</th>
            </tr>
            <tr>
              <td><a href="#gzip and bzip2">BZIP2</a></td>
              <td>No</td>
              <td>No</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
            </tr>
            <tr>
              <td><a href="#Local Files">File</a></td>
              <td>No</td>
              <td>No</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Read/Write</td>
              <td>No</td>
              <td>Yes</td>
            </tr>
            <tr>
              <td><a href="#FTP">FTP</a></td>
              <td>No</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Read</td>
              <td>No</td>
              <td>Yes</td>
            </tr>
            <tr>
              <td><a href="#FTPS">FTPS</a></td>
              <td>No</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Read</td>
              <td>No</td>
              <td>Yes</td>
            </tr>
            <tr>
              <td><a href="#gzip and bzip2">GZIP</a></td>
              <td>No</td>
              <td>No</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
            </tr>
            <tr>
              <td><a href="#HDFS">HDFS</a></td>
              <td>Yes</td>
              <td>No</td>
              <td>Yes</td>
              <td>No</td>
              <td>No</td>
              <td>Read</td>
              <td>No</td>
              <td>No</td>
            </tr>
            <tr>
              <td><a href="#HTTP and HTTPS">HTTP</a></td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>No</td>
              <td>No</td>
              <td>Read</td>
              <td>No</td>
              <td>No</td>
            </tr>
            <tr>
              <td><a href="#HTTP and HTTPS">HTTPS</a></td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>No</td>
              <td>No</td>
              <td>Read</td>
              <td>No</td>
              <td>No</td>
            </tr>
            <tr>
              <td><a href="#Zip, Jar and Tar">Jar</a></td>
              <td>No</td>
              <td>No</td>
              <td>Yes</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
            </tr>
            <tr>
              <td><a href="#ram">RAM</a></td>
              <td>No</td>
              <td>No</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Read/Write</td>
              <td>No</td>
              <td>Yes</td>
            </tr>
            <tr>
              <td><a href="#res">RES</a></td>
              <td>No</td>
              <td>No</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Read/Write</td>
              <td>No</td>
              <td>Yes</td>
            </tr>
            <tr>
              <td><a href="#SFTP">SFTP</a></td>
              <td>No</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Read</td>
              <td>No</td>
              <td>Yes</td>
            </tr>
            <tr>
              <td><a href="#Zip, Jar and Tar">Tar</a></td>
              <td>No</td>
              <td>No</td>
              <td>Yes</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
            </tr>
            <tr>
              <td><a href="#Temporary Fils">Temp</a></td>
              <td>No</td>
              <td>No</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Read/Write</td>
              <td>No</td>
              <td>Yes</td>
            </tr>
            <tr>
              <td><a href="WebDAV">WebDAV</a></td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Read/Write</td>
              <td>Yes</td>
              <td>Yes</td>
            </tr>
            <tr>
              <td><a href="#Zip, Jar and Tar">Zip</a></td>
              <td>No</td>
              <td>No</td>
              <td>Yes</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
            </tr>
          </table>
        </section>

        <section name="Things from the sandbox">
          <p>The following file systems are in development:</p>
          <table>
            <tr>
              <th>File System</th>
              <th>Directory Contents</th>
              <th>Authentication</th>
              <th>Read</th>
              <th>Write</th>
              <th>Create/Delete</th>
              <th>Random</th>
              <th>Version</th>
              <th>Rename</th>
            </tr>
            <tr>
              <td><a href="#CIFS">CIFS</a></td>
              <td>No</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Yes</td>
              <td>Read/Write</td>
              <td>No</td>
              <td>Yes</td>
            </tr>
            <tr>
              <td><a href="#mime">mime</a></td>
              <td>No</td>
              <td>No</td>
              <td>Yes</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
              <td>No</td>
            </tr>
          </table>
        </section>

        <section name="Naming">

            <p>All filenames are treated as URIs. One of the consequences of this is you have to encode the '%'
                character using <code>%25</code>. <br />
                Depending on the filesystem additional characters are encoded if needed. This is done automatically, but
                might be reflected in the filename.
                </p>

            <p>
                <b>Examples</b>
            </p>
            <ul>
                <li>
                    <code>file:///somedir/some%25file.txt</code>
                </li>
            </ul>
            <p>
               Many file systems accept a userid and password as part of the url. However, storing
               a password in clear text in a file is usually unacceptable. To help with that
               Commons VFS provides a mechanism to encrypt the password. It should be noted though,
               that this is not completely secure since the password needs to be unencrypted
               before Commons VFS can use it.
            </p>
            <p>
               To create an encrypted password do:
            </p>
            <code> java -cp commons-vfs-2.0.jar org.apache.commons.vfs2.util.EncryptUtil encrypt mypassword
            </code>
            <p>
               where <i>mypassword</i> is the password you want to encrypt. The result of this will be a
               single line of output containing uppercase hex characters.  For example,
            </p>
            <code>
 java -cp commons-vfs-2.0.jar org.apache.commons.vfs2.util.EncryptUtil encrypt WontUBee9
 D7B82198B272F5C93790FEB38A73C7B8
            </code>
            <p>
              Then cut the output returned and paste it into the URL as:
            </p>
            <code>
 https://testuser:{D7B82198B272F5C93790FEB38A73C7B8}@myhost.com/svn/repos/vfstest/trunk
            </code>
            <p>
               VFS treats a password enclosed in {} as being encrypted and will decrypt the password
               before using it.
            </p>
        </section>

        <section name="Local Files">

            <p>Provides access to the files on the local physical file system.</p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>[file://]
                    <i>absolute-path</i>
                </code>
            </p>

            <p>
                Where
                <code>
                    <i>absolute-path</i>
                </code> is a valid absolute
                file name for the local platform.  UNC names are supported
                under Windows.
            </p>

            <p>
                <b>Examples</b>
            </p>
            <ul>
                <li>
                    <code>file:///home/someuser/somedir</code>
                </li>
                <li>
                    <code>file:///C:/Documents and Settings</code>
                </li>
                <li>
                    <code>file://///somehost/someshare/afile.txt</code>
                </li>
                <li>
                    <code>/home/someuser/somedir</code>
                </li>
                <li>
                    <code>c:\program files\some dir</code>
                </li>
                <li>
                    <code>c:/program files/some dir</code>
                </li>
            </ul>
        </section>

        <section name="Zip, Jar and Tar">

            <p>Provides read-only access to the contents of Zip, Jar and Tar files.</p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>zip://
                    <i>arch-file-uri</i>[!
                    <i>absolute-path</i>]
                </code>
            </p>
            <p>
                <code>jar://
                    <i>arch-file-uri</i>[!
                    <i>absolute-path</i>]
                </code>
            </p>
            <p>
                <code>tar://
                    <i>arch-file-uri</i>[!
                    <i>absolute-path</i>]
                </code>
            </p>
            <p>
                <code>tgz://
                    <i>arch-file-uri</i>[!
                    <i>absolute-path</i>]
                </code>
            </p>
            <p>
                <code>tbz2://
                    <i>arch-file-uri</i>[!
                    <i>absolute-path</i>]
                </code>
            </p>

            <p>
                Where
                <code>arch-file-uri</code> refers to a file of any
                supported type, including other zip files.  Note: if you would like
                to use the ! as normal character it must be escaped
                using <code>%21</code>.<br />
                <code>tgz</code> and <code>tbz2</code> are convenience for <code>tar:gz</code> and <code>tar:bz2</code>.
            </p>

            <p>
                <b>Examples</b>
            </p>
            <ul>
                <li>
                    <code>jar:../lib/classes.jar!/META-INF/manifest.mf</code>
                </li>
                <li>
                    <code>zip:http://somehost/downloads/somefile.zip</code>
                </li>
                <li>
                    <code>jar:zip:outer.zip!/nested.jar!/somedir</code>
                </li>
                <li>
                    <code>jar:zip:outer.zip!/nested.jar!/some%21dir</code>
                </li>
                <li>
                    <code>tar:gz:http://anyhost/dir/mytar.tar.gz!/mytar.tar!/path/in/tar/README.txt</code>
                </li>
                <li>
                    <code>tgz:file://anyhost/dir/mytar.tgz!/somepath/somefile</code>
                </li>
            </ul>

        </section>

        <section name="gzip and bzip2">

            <p>Provides read-only access to the contents of gzip and bzip2 files.</p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>gz://
                    <i>compressed-file-uri</i>
                </code>
            </p>
            <p>
                <code>bz2://
                    <i>compressed-file-uri</i>
                </code>
            </p>

            <p>
                Where
                <code>compressed-file-uri</code> refers to a file of any
                supported type. There is no need to add a <code>!</code> part to the URI if
                you read the content of the file you always will get the uncompressed
                version.
            </p>

            <p>
                <b>Examples</b>
            </p>
            <ul>
                <li>
                    <code>gz:/my/gz/file.gz</code>
                </li>
            </ul>

        </section>

        <section name="HDFS">

            <p>
              Provides (read-only) access to files in an Apache Hadoop File System (HDFS).
              On Windows the <a href="testing.html">integration test</a> is disabled by default, as it
              requires binaries.
            </p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>hdfs://
                    <i>hostname</i>[:
                    <i>port</i>][
                    <i>absolute-path</i>]
                </code>
            </p>

            <p>
                <b>Examples</b>
            </p>
            <ul>
                <li>
                    <code>hdfs://somehost:8080/downloads/some_dir</code>
                </li>
                <li>
                    <code>hdfs://somehost:8080/downloads/some_file.ext</code>
                </li>
            </ul>
        </section>

        <section name="HTTP and HTTPS">

            <p>Provides access to files on an HTTP server.</p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>http://[
                    <i>username</i>[:
                    <i>password</i>]@]
                    <i>hostname</i>[:
                    <i>port</i>][
                    <i>absolute-path</i>]
                </code>
            </p>
            <p>
                <code>https://[
                    <i>username</i>[:
                    <i>password</i>]@]
                    <i>hostname</i>[:
                    <i>port</i>][
                    <i>absolute-path</i>]
                </code>
            </p>
            <p>
                 <b>File System Options</b>
                 <ul>
                   <li><b>proxyHost</b> The proxy host to connect through.</li>
                   <li><b>proxyPort</b> The proxy port to use.</li>
                   <li><b>cookies</b> An array of Cookies to add to the request.</li>
                   <li><b>maxConnectionsPerHost</b> The maximum number of connections allowed to
                   a specific host and port. The default is 5.</li>
                   <li><b>maxTotalConnections</b> The maximum number of connections allowed to
                   all hosts. The default is 50.</li>
                 </ul>
            </p>

            <p>
                <b>Examples</b>
            </p>
            <ul>
                <li>
                    <code>http://somehost:8080/downloads/somefile.jar</code>
                </li>
                <li>
                    <code>http://myusername@somehost/index.html</code>
                </li>
            </ul>
        </section>

        <section name="WebDAV">

            <p>Provides access to files on a WebDAV server.</p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>webdav://[
                    <i>username</i>[:
                    <i>password</i>]@]
                    <i>hostname</i>[:
                    <i>port</i>][
                    <i>absolute-path</i>]
                </code>
            </p>

            <p>
                <b>File System Options</b>
                <ul>
                  <li><b>versioning</b> true if versioning should be enabled</li>
                  <li><b>creatorName</b> the user name to be identified with changes to a file. If
                      not set the user name used to authenticate will be used.</li>
                </ul>
            </p>

            <p>
                <b>Examples</b>
            </p>
            <ul>
                <li>
                    <code>webdav://somehost:8080/dist</code>
                </li>
            </ul>
        </section>

        <section name="FTP">

            <p>Provides access to the files on an FTP server.</p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>ftp://[
                    <i>username</i>[:
                    <i>password</i>]@]
                    <i>hostname</i>[:
                    <i>port</i>][
                    <i>relative-path</i>]
                </code>
            </p>

            <p>
                <b>Examples</b>
            </p>
            <ul>
                <li>
                    <code>ftp://myusername:mypassword@somehost/pub/downloads/somefile.tgz</code>
                </li>
            </ul>

            <p>
                By default, the path is relative to the user's home directory. This can be changed with:
            </p>
            <p>
                <code>FtpFileSystemConfigBuilder.getInstance().setUserDirIsRoot(options, false);</code>
            </p>

        </section>

        <section name="FTPS">

            <p>Provides access to the files on an FTP server over SSL.</p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>ftps://[
                    <i>username</i>[:
                    <i>password</i>]@]
                    <i>hostname</i>[:
                    <i>port</i>][
                    <i>absolute-path</i>]
                </code>
            </p>

            <p>
                <b>Examples</b>
            </p>
            <ul>
                <li>
                    <code>ftps://myusername:mypassword@somehost/pub/downloads/somefile.tgz</code>
                </li>
            </ul>

        </section>

        <section name="SFTP">

            <p>
                Provides access to the files on an SFTP server (that is, an SSH
                or SCP server).
            </p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>sftp://[
                    <i>username</i>[:
                    <i>password</i>]@]
                    <i>hostname</i>[:
                    <i>port</i>][
                    <i>relative-path</i>]
                </code>
            </p>

            <p>
                <b>Examples</b>
            </p>
            <ul>
                <li>
                    <code>sftp://myusername:mypassword@somehost/pub/downloads/somefile.tgz</code>
                </li>
            </ul>

            <p>
                By default, the path is relative to the user's home directory. This can be changed with:
            </p>
            <p>
                <code>FtpFileSystemConfigBuilder.getInstance().setUserDirIsRoot(options, false);</code>
            </p>

        </section>

        <section name="CIFS">

            <p>
                The CIFS (sandbox) filesystem provides access to a CIFS server, such as
                a Samba server, or a Windows share.
            </p>
            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>smb://[
                    <i>username</i>[:
                    <i>password</i>]@]
                    <i>hostname</i>[:
                    <i>port</i>][
                    <i>absolute-path</i>]
                </code>
            </p>

            <p>
                <b>Examples</b>
            </p>

            <ul>
                <li>
                    <code>smb://somehost/home</code>
                </li>
            </ul>

        </section>

        <section name="Temporary Files">

            <p>
                Provides access to a temporary file system, or scratchpad,
                that is deleted when Commons VFS shuts down.  The temporary file
                system is backed by a local file system.
            </p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>tmp://[
                    <i>absolute-path</i>]
                </code>
            </p>

            <p>
                <b>Examples</b>
            </p>

            <ul>
                <li>
                    <code>tmp://dir/somefile.txt</code>
                </li>
            </ul>
        </section>

        <section name="res">

            <p>
                This is not really a filesystem, it just tries to lookup a resource using javas <code>ClassLoader.getResource()</code>
                and creates a VFS url for further processing.
            </p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>res://[
                    <i>path</i>]
                </code>
            </p>

            <p>
                <b>Examples</b>
            </p>

            <ul>
                <li>
                    <code>res:path/in/classpath/image.png</code><br/>
                    might result in
                    <code>jar:file://my/path/to/images.jar!/path/in/classpath/image.png</code><br/>
                </li>
            </ul>
        </section>

        <section name="ram">

            <p>
                A filesystem which stores all the data in memory (one byte array for each file content).
            </p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>ram://[
                    <i>path</i>]
                </code>
            </p>

            <p>
                <b>File System Options</b>
                <ul>
                   <li><b>maxsize</b> Maximum filesystem size (total bytes of all file contents).</li>
                </ul>
            </p>

            <p>
                <b>Examples</b>
            </p>

            <ul>
                <li>
                    <code>ram:///any/path/to/file.txt</code>
                </li>
            </ul>
        </section>

        <section name="mime">

            <p>
                This (sandbox) filesystem can read mails and its attachements like archives.<br />
                If a part in the parsed mail has no name, a dummy name will be generated.
                The dummy name is: _body_part_X where X will be replaced by the part number.
            </p>

            <p>
                <b>URI Format</b>
            </p>

            <p>
                <code>mime://
                    <i>mime-file-uri</i>[!
                    <i>absolute-path</i>]
                </code>
            </p>

            <p>
                <b>Examples</b>
            </p>

            <ul>
                <li>
                    <code>mime:file:///your/path/mail/anymail.mime!/</code>
                </li>
                <li>
                    <code>mime:file:///your/path/mail/anymail.mime!/filename.pdf</code>
                </li>
                <li>
                    <code>mime:file:///your/path/mail/anymail.mime!/_body_part_0</code>
                </li>
            </ul>
        </section>

    </body>
</document>