src/net/pterodactylus/util/fcp/FcpMessage.java

   1 /*
   2  * jSite2 - FcpMessage.java -
   3  * Copyright © 2008 David Roden
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 package net.pterodactylus.util.fcp;
  21
  22 import java.io.IOException;
  23 import java.io.InputStream;
  24 import java.io.OutputStream;
  25 import java.util.Collections;
  26 import java.util.HashMap;
  27 import java.util.Iterator;
  28 import java.util.Map;
  29 import java.util.Map.Entry;
  30
  31 import net.pterodactylus.util.io.StreamCopier;
  32
  33 /**
  34  * TODO
  35  *
  36  * @author David ‘Bombe’ Roden &lt;bombe@freenetproject.org&gt;
  37  * @version $Id$
  38  */
  39 public class FcpMessage implements Iterable<String> {
  40
  41         private static final String LINEFEED = "\r\n";
  42
  43         private final String name;
  44         private final Map<String, String> fields = new HashMap<String, String>();
  45         private InputStream dataInputStream;
  46
  47         public FcpMessage(String name) {
  48                 this(name, null);
  49         }
  50
  51         public FcpMessage(String name, InputStream dataInputStream) {
  52                 this.name = name;
  53                 this.dataInputStream = dataInputStream;
  54         }
  55
  56         public String getName() {
  57                 return name;
  58         }
  59
  60         public void setField(String field, String value) {
  61                 if ((field == null) || (value == null)) {
  62                         throw new NullPointerException(((field == null) ? "field " : "value ") + "must not be null");
  63                 }
  64                 fields.put(field, value);
  65         }
  66
  67         public String getField(String field) {
  68                 return fields.get(field);
  69         }
  70
  71         public Map<String, String> getFields() {
  72                 return Collections.unmodifiableMap(fields);
  73         }
  74
  75         /**
  76          * {@inheritDoc}
  77          */
  78         public Iterator<String> iterator() {
  79                 return fields.keySet().iterator();
  80         }
  81
  82         public void setDataInputStream(InputStream dataInputStream) {
  83                 this.dataInputStream = dataInputStream;
  84         }
  85
  86         public void write(OutputStream outputStream) throws IOException {
  87                 writeLine(outputStream, name);
  88                 for (Entry<String, String> fieldEntry: fields.entrySet()) {
  89                         writeLine(outputStream, fieldEntry.getKey() + "=" + fieldEntry.getValue());
  90                 }
  91                 writeLine(outputStream, "EndMessage");
  92                 outputStream.flush();
  93                 if (dataInputStream != null) {
  94                         StreamCopier.copy(dataInputStream, outputStream);
  95                 }
  96                 outputStream.flush();
  97         }
  98
  99         private void writeLine(OutputStream outputStream, String line) throws IOException {
 100                 outputStream.write((line + LINEFEED).getBytes("UTF-8"));
 101         }
 102
 103 }