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java.lang.Object | +--sunlabs.brazil.tcl.TclFilter
Wrapper for writing FilterHandler filters in TCL.
 Runs a tcl startup script when the handler is initialized.
 Any time a request is made, the tcl filter proc
 (which should be defined in the init script) is called,
 provided with the
 Request object as an argument.
 
This provides a bare-bones tcl interface. The startup script should provide a friendlier interface.
 This handler requires the tcl.jar
 jar file, a version of jacl included in the release.
 
The following server properties are used:
init(sunlabs.brazil.server.Server, java.lang.String) parameters are made available as the global
		variables prefix and server.
 
| Constructor Summary | |
| TclFilter() | |
| Method Summary | |
|  byte[] | filter(Request request,
       MimeHeaders headers,
       byte[] content)Filters the content generated by the wrapped Handler. | 
|  boolean | init(Server server,
     String prefix)extract the filter properties. | 
|  boolean | respond(Request request)We don't need to look at the request. | 
|  boolean | shouldFilter(Request request,
             MimeHeaders headers)For now, only filter text/html. | 
| Methods inherited from class java.lang.Object | 
| equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait | 
| Constructor Detail | 
public TclFilter()
| Method Detail | 
public boolean init(Server server,
                    String prefix)
init in interface Handlerserver - The HTTP server that created this Handler.
		Typical Handlers will use Server.props
		to obtain run-time configuration information.prefix - The handlers name.
		The string this Handler may prepend to all
		of the keys that it uses to extract configuration information
		from Server.props.  This is set (by the Server
		and ChainHandler) to help avoid configuration parameter
		namespace collisions.
true if this Handler initialized
		successfully, false otherwise.  If
		false is returned, this Handler
		should not be used.public boolean respond(Request request)
respond in interface Handlerrequest - The Request object that represents the HTTP
		request.
true if the request was handled.  A request was
		handled if a response was supplied to the client, typically
		by calling Request.sendResponse() or
		Request.sendError.
public boolean shouldFilter(Request request,
                            MimeHeaders headers)
shouldFilter in interface Filterrequest - The in-progress HTTP request.headers - The MIME headers generated by the wrapped Handler.
true if this filter would like to examine and
		possibly rewrite the content, false otherwise.
public byte[] filter(Request request,
                     MimeHeaders headers,
                     byte[] content)
FilterHandler.
 The content may be arbitrarily rewritten by this method.
 
 The MIME headers may also be modified by this Filter,
 for instance, to change the "Content-Type" of a web page.
 The "Content-Length" will automatically be computed by the
 FilterHandler.
filter in interface Filterrequest - The finished HTTP request.headers - The MIME headers generated by the Handler.content - The output from the Handler that this
		Filter may rewrite.
Filter may return
		the original content unchanged.  The
		Filter may return null to indicate
		that the FilterHandler should stop processing the
		request and should not return any content to the client.| 
 | Version 2.1, Generated 12/30/04 Copyright (c) 2001-2004, Sun Microsystems. | ||||||||
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