Initial revision

From-SVN: r102074

libjava/classpath/gnu/java/net/HeaderFieldHelper.java

@@ -0,0 +1,138 @@
+/* HeaderFieldHelper.java -- Helps manage headers fields 
+   Copyright (C) 1998, 2003 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+ 
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.java.net;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Vector;
+
+/**
+ * This class manages header field keys and values.
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ */
+public class HeaderFieldHelper
+{
+  private Vector headerFieldKeys;
+  private Vector headerFieldValues;
+
+  public HeaderFieldHelper()
+  {
+    this (10);
+  }
+
+  public HeaderFieldHelper (int size)
+  {
+    headerFieldKeys = new Vector (size);
+    headerFieldValues = new Vector (size);
+  }
+
+  public void addHeaderField (String key, String value)
+  {
+    headerFieldKeys.addElement (key);
+    headerFieldValues.addElement (value);
+  }
+
+  public String getHeaderFieldKeyByIndex (int index)
+  {
+    String key = null;
+
+    try
+      {
+        key = (String) headerFieldKeys.elementAt (index);
+      }
+    catch (ArrayIndexOutOfBoundsException e)
+      {
+      }
+
+    return key;
+  }
+
+  public String getHeaderFieldValueByIndex(int index)
+  {
+    String value = null;
+
+    try
+      {
+        value = (String) headerFieldValues.elementAt (index);
+      }
+    catch (ArrayIndexOutOfBoundsException e)
+      {
+      }
+
+    return value;
+  }
+
+  public String getHeaderFieldValueByKey(String key)
+  {
+    String value = null;
+
+    try
+      {
+	value = (String) headerFieldValues.elementAt
+			   (headerFieldKeys.indexOf(key));
+      }
+    catch (ArrayIndexOutOfBoundsException e)
+      {
+      }
+    
+    return value;
+  }
+
+  public Map getHeaderFields()
+  {
+    HashMap headers = new HashMap();
+    int max = headerFieldKeys.size();
+
+    for (int index = 0; index < max; index++)
+      {
+	headers.put(headerFieldKeys.elementAt(index),
+		    headerFieldValues.elementAt(index));
+      }
+
+    return headers;
+  }
+
+  public int getNumberOfEntries()
+  {
+    return headerFieldKeys.size();
+  }
+
+} // class HeaderFieldHelper
+