[jboss-cvs] jboss-portal/common/src/main/org/jboss/portal/common/net ...

[Julien Viet]

  User: julien  
  Date: 06/07/20 11:16:58

  Added:       common/src/main/org/jboss/portal/common/net 
                        Application_XWWWFormURLEncodedFormat.java
  Log:
  added lookup based application/x-www-formurlencoded class for fast encoding
  
  Revision  Changes    Path
  1.1      date: 2006/07/20 15:16:58;  author: julien;  state: Exp;jboss-portal/common/src/main/org/jboss/portal/common/net/Application_XWWWFormURLEncodedFormat.java
  
  Index: Application_XWWWFormURLEncodedFormat.java
  ===================================================================
  /*
  * JBoss, Home of Professional Open Source
  * Copyright 2005, JBoss Inc., and individual contributors as indicated
  * by the @authors tag. See the copyright.txt in the distribution for a
  * full listing of individual contributors.
  *
  * This is free software; you can redistribute it and/or modify it
  * under the terms of the GNU Lesser General Public License as
  * published by the Free Software Foundation; either version 2.1 of
  * the License, or (at your option) any later version.
  *
  * This software 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
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this software; if not, write to the Free
  * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
  */
  package org.jboss.portal.common.net;
  
  import java.io.IOException;
  
  /**
   * Provide fast encoding to the application/x-www-form-urlencoded MIME format for a specified
   * charset.
   *
   * @author <a href="mailto:julien at jboss.org">Julien Viet</a>
   * @version $Revision: 1.1 $
   */
  public class Application_XWWWFormURLEncodedFormat
  {
  
     public static final Application_XWWWFormURLEncodedFormat UTF_8 = safeCreate("UTF-8");
  
     private static Application_XWWWFormURLEncodedFormat safeCreate(String charset)
     {
        try
        {
           return new Application_XWWWFormURLEncodedFormat(charset);
        }
        catch (IOException e)
        {
           throw new Error(e);
        }
     }
  
     private final char[][] table;
  
     public Application_XWWWFormURLEncodedFormat(String charset) throws IOException
     {
        StringBuffer sb = new StringBuffer();
        table = new char[Character.MAX_VALUE + 1][0];
        for (int i = 0; i <= Character.MAX_VALUE; i++)
        {
           char c = (char)i;
           if (c >= 'a' && c <= 'z')
           {
              table[c] = new char[]{c};
           }
           else if (c >= 'A' && c <= 'Z')
           {
              table[c] = new char[]{c};
           }
           else if (c >= '0' && c <= '9')
           {
              table[c] = new char[]{c};
           }
           else if (c == '-' || c == '_' || c == '.' || c == '*')
           {
              table[c] = new char[]{c};
           }
           else if (c == ' ')
           {
              table[c] = new char[]{'+'};
           }
           else
           {
              String s = new String(new char[]{c});
              byte[] bytes = s.getBytes(charset);
              for (int j = 0; j < bytes.length; j++)
              {
                 byte b = bytes[j];
                 int bh = (b >> 4) & 0xF;
                 int bl = b & 0xF;
                 char ch = Character.toUpperCase(Character.forDigit(bh, 16));
                 char cl = Character.toUpperCase(Character.forDigit(bl, 16));
                 sb.append('%').append(ch).append(cl);
              }
              table[c] = new char[sb.length()];
              sb.getChars(0, sb.length(), table[c], 0);
              sb.setLength(0);
           }
        }
     }
  
     public void encode(char c, StringBuffer sb)
     {
        sb.append(table[c]);
     }
  
     public void encode(String s, StringBuffer sb)
     {
        encode(s, 0, s.length(), sb);
     }
  
     public void encode(String s, int from, int to, StringBuffer sb)
     {
        for (int i = from; i < to; i++)
        {
           char c = s.charAt(i);
           char[] chars = table[c];
           sb.append(chars);
        }
     }
  
     public String encode(char c)
     {
        return new String(table[c]);
     }
  
     public String encode(String s, int from, int to)
     {
        StringBuffer sb = new StringBuffer();
        encode(s, from, to, sb);
        return sb.toString();
     }
  
     public String encode(String s)
     {
        return encode(s, 0, s.length());
     }
  }