001: package org.tigris.scarab.pipeline;
002:
003: /* ================================================================
004: * Copyright (c) 2001 Collab.Net. All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions are
008: * met:
009: *
010: * 1. Redistributions of source code must retain the above copyright
011: * notice, this list of conditions and the following disclaimer.
012: *
013: * 2. Redistributions in binary form must reproduce the above copyright
014: * notice, this list of conditions and the following disclaimer in the
015: * documentation and/or other materials provided with the distribution.
016: *
017: * 3. The end-user documentation included with the redistribution, if
018: * any, must include the following acknowlegement: "This product includes
019: * software developed by Collab.Net <http://www.Collab.Net/>."
020: * Alternately, this acknowlegement may appear in the software itself, if
021: * and wherever such third-party acknowlegements normally appear.
022: *
023: * 4. The hosted project names must not be used to endorse or promote
024: * products derived from this software without prior written
025: * permission. For written permission, please contact info@collab.net.
026: *
027: * 5. Products derived from this software may not use the "Tigris" or
028: * "Scarab" names nor may "Tigris" or "Scarab" appear in their names without
029: * prior written permission of Collab.Net.
030: *
031: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
032: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
033: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
034: * IN NO EVENT SHALL COLLAB.NET OR ITS CONTRIBUTORS BE LIABLE FOR ANY
035: * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
036: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
037: * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
038: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
039: * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
040: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
041: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
042: *
043: * ====================================================================
044: *
045: * This software consists of voluntary contributions made by many
046: * individuals on behalf of Collab.Net.
047: */
048:
049: import java.io.IOException;
050:
051: import org.apache.turbine.RunData;
052: import org.apache.turbine.Turbine;
053: import org.apache.turbine.TurbineException;
054: import org.apache.turbine.ValveContext;
055: import org.apache.turbine.pipeline.AbstractValve;
056: import org.tigris.scarab.util.ComponentLocator;
057:
058: /**
059: * This valve determines the charset to use when parsing request parameters.
060: *
061: * @author <a href="mailto:jmcnally@collab.net">John McNally</a>
062: * @version $Id: DetermineCharsetValve.java 9286 2004-12-03 12:10:28Z dep4b $
063: */
064: public class DetermineCharsetValve extends AbstractValve {
065:
066: private static String REQUIRED_CHARSET;
067:
068: public void initialize() throws Exception {
069: super .initialize();
070: REQUIRED_CHARSET = Turbine.getConfiguration().getString(
071: "locale.default.charset", null);
072: }
073:
074: /**
075: * @see org.apache.turbine.Valve#invoke(RunData, ValveContext)
076: */
077: public void invoke(RunData data, ValveContext context)
078: throws IOException, TurbineException {
079: // if we are forcing a particular charset, use it. Hopefully
080: // client has encoded for this default. This is the same
081: // property that will force the charset in our responses.
082: String encoding = REQUIRED_CHARSET;
083:
084: if (encoding == null) {
085: // guess the charset from the client's headers
086: encoding = ComponentLocator.getMimeTypeService()
087: .getCharSet(data.getLocale());
088: }
089:
090: // if the charset was specified in the configuration or the charset
091: // map contained a value for the locale, set it, otherwise leave
092: // it as the servlet engine has set it.
093: if (encoding != null) {
094: data.getRequest().setCharacterEncoding(encoding);
095: data.setCharSet(encoding);
096: }
097:
098: // Pass control to the next Valve in the Pipeline
099: context.invokeNext(data);
100: }
101: }
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