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Diffstat (limited to 'org/apache/commons/net/ftp/parser/VMSFTPEntryParser.java')
| -rw-r--r-- | org/apache/commons/net/ftp/parser/VMSFTPEntryParser.java | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/org/apache/commons/net/ftp/parser/VMSFTPEntryParser.java b/org/apache/commons/net/ftp/parser/VMSFTPEntryParser.java new file mode 100644 index 0000000..1e55ede --- /dev/null +++ b/org/apache/commons/net/ftp/parser/VMSFTPEntryParser.java @@ -0,0 +1,288 @@ +/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.net.ftp.parser;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.text.ParseException;
+import java.util.StringTokenizer;
+
+import org.apache.commons.net.ftp.FTPClientConfig;
+import org.apache.commons.net.ftp.FTPFile;
+import org.apache.commons.net.ftp.FTPListParseEngine;
+
+/**
+ * Implementation FTPFileEntryParser and FTPFileListParser for VMS Systems.
+ * This is a sample of VMS LIST output
+ *
+ * "1-JUN.LIS;1 9/9 2-JUN-1998 07:32:04 [GROUP,OWNER] (RWED,RWED,RWED,RE)",
+ * "1-JUN.LIS;2 9/9 2-JUN-1998 07:32:04 [GROUP,OWNER] (RWED,RWED,RWED,RE)",
+ * "DATA.DIR;1 1/9 2-JUN-1998 07:32:04 [GROUP,OWNER] (RWED,RWED,RWED,RE)",
+ * <P><B>
+ * Note: VMSFTPEntryParser can only be instantiated through the
+ * DefaultFTPParserFactory by classname. It will not be chosen
+ * by the autodetection scheme.
+ * </B>
+ * <P>
+ *
+ * @author <a href="Winston.Ojeda@qg.com">Winston Ojeda</a>
+ * @author <a href="mailto:scohen@apache.org">Steve Cohen</a>
+ * @author <a href="sestegra@free.fr">Stephane ESTE-GRACIAS</a>
+ * @version $Id: VMSFTPEntryParser.java 658518 2008-05-21 01:04:30Z sebb $
+ *
+ * @see org.apache.commons.net.ftp.FTPFileEntryParser FTPFileEntryParser (for usage instructions)
+ * @see org.apache.commons.net.ftp.parser.DefaultFTPFileEntryParserFactory
+ */
+public class VMSFTPEntryParser extends ConfigurableFTPFileEntryParserImpl
+{
+
+ private static final String DEFAULT_DATE_FORMAT
+ = "d-MMM-yyyy HH:mm:ss"; //9-NOV-2001 12:30:24
+
+ /**
+ * this is the regular expression used by this parser.
+ */
+ private static final String REGEX =
+ "(.*;[0-9]+)\\s*" //1 file and version
+ + "(\\d+)/\\d+\\s*" //2 size/allocated
+ +"(\\S+)\\s+(\\S+)\\s+" //3+4 date and time
+ + "\\[(([0-9$A-Za-z_]+)|([0-9$A-Za-z_]+),([0-9$a-zA-Z_]+))\\]?\\s*" //5(6,7,8) owner
+ + "\\([a-zA-Z]*,([a-zA-Z]*),([a-zA-Z]*),([a-zA-Z]*)\\)"; //9,10,11 Permissions (O,G,W)
+ // TODO - perhaps restrict permissions to [RWED]* ?
+
+
+
+ /**
+ * Constructor for a VMSFTPEntryParser object.
+ *
+ * @exception IllegalArgumentException
+ * Thrown if the regular expression is unparseable. Should not be seen
+ * under normal conditions. It it is seen, this is a sign that
+ * <code>REGEX</code> is not a valid regular expression.
+ */
+ public VMSFTPEntryParser()
+ {
+ this(null);
+ }
+
+ /**
+ * This constructor allows the creation of a VMSFTPEntryParser object with
+ * something other than the default configuration.
+ *
+ * @param config The {@link FTPClientConfig configuration} object used to
+ * configure this parser.
+ * @exception IllegalArgumentException
+ * Thrown if the regular expression is unparseable. Should not be seen
+ * under normal conditions. It it is seen, this is a sign that
+ * <code>REGEX</code> is not a valid regular expression.
+ * @since 1.4
+ */
+ public VMSFTPEntryParser(FTPClientConfig config)
+ {
+ super(REGEX);
+ configure(config);
+ }
+
+
+
+ /***
+ * Parses an FTP server file listing and converts it into a usable format
+ * in the form of an array of <code> FTPFile </code> instances. If the
+ * file list contains no files, <code> null </code> should be
+ * returned, otherwise an array of <code> FTPFile </code> instances
+ * representing the files in the directory is returned.
+ * <p>
+ * @param listStream The InputStream from which the file list should be
+ * read.
+ * @return The list of file information contained in the given path. null
+ * if the list could not be obtained or if there are no files in
+ * the directory.
+ * @exception IOException If an I/O error occurs reading the listStream.
+ ***/
+ public FTPFile[] parseFileList(InputStream listStream) throws IOException {
+ FTPListParseEngine engine = new FTPListParseEngine(this);
+ engine.readServerList(listStream);
+ return engine.getFiles();
+ }
+
+
+
+ /**
+ * Parses a line of a VMS FTP server file listing and converts it into a
+ * usable format in the form of an <code> FTPFile </code> instance. If the
+ * file listing line doesn't describe a file, <code> null </code> is
+ * returned, otherwise a <code> FTPFile </code> instance representing the
+ * files in the directory is returned.
+ * <p>
+ * @param entry A line of text from the file listing
+ * @return An FTPFile instance corresponding to the supplied entry
+ */
+ public FTPFile parseFTPEntry(String entry)
+ {
+ //one block in VMS equals 512 bytes
+ long longBlock = 512;
+
+ if (matches(entry))
+ {
+ FTPFile f = new FTPFile();
+ f.setRawListing(entry);
+ String name = group(1);
+ String size = group(2);
+ String datestr = group(3)+" "+group(4);
+ String owner = group(5);
+ String permissions[] = new String[3];
+ permissions[0]= group(9);
+ permissions[1]= group(10);
+ permissions[2]= group(11);
+ try
+ {
+ f.setTimestamp(super.parseTimestamp(datestr));
+ }
+ catch (ParseException e)
+ {
+ // intentionally do nothing
+ }
+
+
+ String grp;
+ String user;
+ StringTokenizer t = new StringTokenizer(owner, ",");
+ switch (t.countTokens()) {
+ case 1:
+ grp = null;
+ user = t.nextToken();
+ break;
+ case 2:
+ grp = t.nextToken();
+ user = t.nextToken();
+ break;
+ default:
+ grp = null;
+ user = null;
+ }
+
+ if (name.lastIndexOf(".DIR") != -1)
+ {
+ f.setType(FTPFile.DIRECTORY_TYPE);
+ }
+ else
+ {
+ f.setType(FTPFile.FILE_TYPE);
+ }
+ //set FTPFile name
+ //Check also for versions to be returned or not
+ if (isVersioning())
+ {
+ f.setName(name);
+ }
+ else
+ {
+ name = name.substring(0, name.lastIndexOf(";"));
+ f.setName(name);
+ }
+ //size is retreived in blocks and needs to be put in bytes
+ //for us humans and added to the FTPFile array
+ long sizeInBytes = Long.parseLong(size) * longBlock;
+ f.setSize(sizeInBytes);
+
+ f.setGroup(grp);
+ f.setUser(user);
+ //set group and owner
+
+ //Set file permission.
+ //VMS has (SYSTEM,OWNER,GROUP,WORLD) users that can contain
+ //R (read) W (write) E (execute) D (delete)
+
+ //iterate for OWNER GROUP WORLD permissions
+ for (int access = 0; access < 3; access++)
+ {
+ String permission = permissions[access];
+
+ f.setPermission(access, FTPFile.READ_PERMISSION, permission.indexOf('R')>=0);
+ f.setPermission(access, FTPFile.WRITE_PERMISSION, permission.indexOf('W')>=0);
+ f.setPermission(access, FTPFile.EXECUTE_PERMISSION, permission.indexOf('E')>=0);
+ }
+
+ return f;
+ }
+ return null;
+ }
+
+
+ /**
+ * Reads the next entry using the supplied BufferedReader object up to
+ * whatever delemits one entry from the next. This parser cannot use
+ * the default implementation of simply calling BufferedReader.readLine(),
+ * because one entry may span multiple lines.
+ *
+ * @param reader The BufferedReader object from which entries are to be
+ * read.
+ *
+ * @return A string representing the next ftp entry or null if none found.
+ * @exception IOException thrown on any IO Error reading from the reader.
+ */
+ @Override
+ public String readNextEntry(BufferedReader reader) throws IOException
+ {
+ String line = reader.readLine();
+ StringBuffer entry = new StringBuffer();
+ while (line != null)
+ {
+ if (line.startsWith("Directory") || line.startsWith("Total")) {
+ line = reader.readLine();
+ continue;
+ }
+
+ entry.append(line);
+ if (line.trim().endsWith(")"))
+ {
+ break;
+ }
+ line = reader.readLine();
+ }
+ return (entry.length() == 0 ? null : entry.toString());
+ }
+
+ protected boolean isVersioning() {
+ return false;
+ }
+
+ /**
+ * Defines a default configuration to be used when this class is
+ * instantiated without a {@link FTPClientConfig FTPClientConfig}
+ * parameter being specified.
+ * @return the default configuration for this parser.
+ */
+ @Override
+ protected FTPClientConfig getDefaultConfiguration() {
+ return new FTPClientConfig(
+ FTPClientConfig.SYST_VMS,
+ DEFAULT_DATE_FORMAT,
+ null, null, null, null);
+ }
+
+
+}
+
+/* Emacs configuration
+ * Local variables: **
+ * mode: java **
+ * c-basic-offset: 4 **
+ * indent-tabs-mode: nil **
+ * End: **
+ */
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