sanders 02/02/22 10:00:50
Added: servlet/src/java/org/apache/commons/servlet
RequestUtils.java
Removed: util/src/java/org/apache/commons/util/http RequestUtils.java
Log:
RequestUtils has a new resting place...
Revision Changes Path
1.1
jakarta-commons-sandbox/servlet/src/java/org/apache/commons/servlet/RequestUtils.java
Index: RequestUtils.java
===================================================================
package org.apache.commons.servlet;
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache Turbine" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache",
* "Apache Turbine", nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.util.StringUtils;
/**
* This class provides utilities for getting information from
* javax.servlet.http.HttpServletRequest.
*
* @author <a href="mailto:[EMAIL PROTECTED]";>Lance Lavandowska</a>
* @version $Id: RequestUtils.java,v 1.1 2002/02/22 18:00:50 sanders Exp $
*/
public class RequestUtils
{
/**
* Tries several variations of the header name in an attempt to
* find a value for the header. Header name should start with
* format: all caps, words seperated with an underscore. JRun
* uses underscore with all capital letters, Resin uses dash with
* title case, and OrionServer uses dash with all capitals, etc.
*
* @param request The HttpRequest in which to look for Header.
* @param header The String with the beginning name of Header.
*
* @return The String value of the header, or NULL if cannot be found.
*/
public static String findHeader(HttpServletRequest request, String header)
{
// underscore w/allCap
String headerValue = request.getHeader(header);
if (headerValue == null)
{
// underscore w/ title case
header = RequestUtils.headerToTitleCase(header.toLowerCase());
headerValue = request.getHeader(header);
if (headerValue == null)
{
// dash w/ title case
header = StringUtils.replace(header, "_", "-");
headerValue = request.getHeader(header);
if (headerValue == null)
{
// dash w/ all caps
header = header.toUpperCase();
headerValue = request.getHeader(header);
if (headerValue == null)
{
// dash w/ all lower
header = header.toLowerCase();
headerValue = request.getHeader(header);
if (headerValue == null)
{
// underscore w/ all lower
header = StringUtils.replace(header, "-", "_");
headerValue = request.getHeader(header);
}
}
}
}
}
return headerValue;
}
/**
* Special implemenation - just for request headers. Capitalizes
* the first letter of each word. Depends on words being
* separated with "_" or "-". FIXME: Assumes only one separator,
* doesn't properly check header name string indices.
*
* @param header The HTTP header string to capitalize the distinct
* words of.
* @return The modified value of the header.
*/
public static String headerToTitleCase(String header)
{
int underscoreLoc = header.indexOf("_");
if (underscoreLoc == -1) underscoreLoc = header.indexOf("-");
String firstChar = header.substring(0, 1).toUpperCase();
if (underscoreLoc != -1)
{
String secondChar =
header.substring(underscoreLoc + 1, underscoreLoc + 2)
.toUpperCase();
header = firstChar + header.substring(1, underscoreLoc + 1) +
secondChar + header.substring(underscoreLoc+2);
}
else
{
header = firstChar + header.substring(1);
}
return header;
}
}
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