sunlabs.brazil.filter
Class PhoneFilter

java.lang.Object
  sunlabs.brazil.filter.PhoneFilter (view source)

All Implemented Interfaces:

Filter, Handler

public class PhoneFilter
extends Object
implements Filter

Rewrite text between markup (and not in links) based on re sub's

re

regular 'phone' expression. Phone Expressions are simplified regular expressions:

• N Any digit
• [space] zero or more spaces
• | logical or
• anything else - itself

sub

substitution

trailer

to add at end of document (before )

Constructor Summary

PhoneFilter()

Method Summary

byte[]	filter(Request request, MimeHeaders headers, byte[] content) Filters the content generated by the wrapped Handler.
static String	getRe(String s) Turn a "phone" regular expression into a real RE.
boolean	init(Server server, String prefix) Initializes the handler.
boolean	respond(Request request) Remove any accept-encoding headers so we don't have do decode them ourselves.
boolean	shouldFilter(Request request, MimeHeaders headers) Only filter html files

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PhoneFilter

public PhoneFilter()

Method Detail

init

public boolean init(Server server,
                    String prefix)

Description copied from interface: Handler

Initializes the handler.

Specified by:

init in interface Handler

Parameters:

server - 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.

Returns:

true if this Handler initialized successfully, false otherwise. If false is returned, this Handler should not be used.

respond

public boolean respond(Request request)

Remove any accept-encoding headers so we don't have do decode them ourselves.

Specified by:

respond in interface Handler

Parameters:

request - The Request object that represents the HTTP request.

Returns:

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.

shouldFilter

public boolean shouldFilter(Request request,
                            MimeHeaders headers)

Only filter html files

Specified by:

shouldFilter in interface Filter

Parameters:

request - The in-progress HTTP request.

headers - The MIME headers generated by the wrapped Handler.

Returns:

true if this filter would like to examine and possibly rewrite the content, false otherwise.

filter

public byte[] filter(Request request,
                     MimeHeaders headers,
                     byte[] content)

Description copied from interface: Filter

Filters the content generated by the wrapped Handler. 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.

Specified by:

filter in interface Filter

Parameters:

request - The finished HTTP request.

headers - The MIME headers generated by the Handler.

content - The output from the Handler that this Filter may rewrite.

Returns:

The rewritten content. The 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.

getRe

public static String getRe(String s)

Turn a "phone" regular expression into a real RE.