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README.md

FWP+: Keyword Filters

FWP+: Keyword Filters is an add-on module that adds simple filtering abilities for the FeedWordPress feed aggregator on WordPress weblogs.

Description

FWP+: Keyword Filters works together with the FeedWordPress feed aggregator plugin for WordPress weblogs. With the Keyword Filters module activated, you can set up filtering rules that determine what to do with incoming posts based on the keywords found in the text of the post, or on the categories assigned to it on its original source. Filtering rules can be set up to apply to all of your subscriptions, or can be applied only to posts coming in from one particular feed.

Usage

Once you have installed and activated the add-on module (as per Installation below) go to Syndication --> Posts & Links (to set up filtering rules that apply to posts from any of your subscriptions), or go to the Posts settings page for one of the individual feeds you subscribe to (to set up filtering rules that apply only to posts from that particular source). Use the "+ Add Another Filter" link to set up new rules. The rules in the "Keyword Filters" section will be applied when a new incoming post matches the patterns you set up. The rules in the "Default" section will be applied to any posts that don't match any of the patterns you've set up.

Your rules can be set up to filter posts out (so that they will not appear on your FeedWordPress site), or to filter posts in (so that they will appear on your site). You can also set up rules to assign matching posts to one or more particular categories, or to apply one or more tags to them.

By default, FeedWordPress will include any post that appears on a feed, unless a rule explicitly filters it out. So if you want to ensure that posts only appear when they match one or more of your filtering rules, set up a "Default" rule indicating that posts containing no matching keywords will be filtered out. Then add rules to the "Keyword Filters" section specifying the conditions which will allow a post to be filtered in.

Rules you set up will either search for posts placed into certain categories on their original source website, or posts that contain certain keywords. You can also search for keywords based on an exact word match, or based on a regular expression.

Searching for post categories: To search for categories on a post, change the "in their [...]" dropdown so that it reads "in their categories" instead of "in their text." Then enter the name of the category you want to search for in the keyword box. Note that category matches must be exact matches: putting "Stuff" in the box will match posts that had the category "Stuff" on the original source website, but not (e.g.) posts that had a category called "Stuff and Nonsense".

Searching for keywords in the post text: To search for one or more keywords in the text of an incoming post, just type the keywords, one after another, into the "Posts containing [...]" box. This works roughly like a Google search: Keyword Filters will search for posts that contain all of those keywords, as complete words (so, for example, "cat dog" will search for posts that contain both the word "cat" by itself, and the word "dog" by itself; it will not match "categories" or "doggerel"). Keywords match regardless of uppercase or lowercase letters (so "cat" will match not only "cat," but also "CAT," "cAt," etc.). If you want to set up filters for posts that contain either "cat" or "dog" but not necessarily both, set up two separate keyword filtering rules, one for each term.

Searching for regular expressions in the post text: If you need more flexible searching, you can search incoming posts for a Perl-compatible regular expression by wrapping the keyword pattern in forward slashes (like /this/). So, for example, if you need to match anything that includes the letters c-a-t, including "cat," "cats," "categories," "signification," etc., use the following pattern:

/cat/

Regular expression searches are usually case-sensitive, so this will match "cat" and "categories" but not "Cats" or "signifiCATion." To make the search ignore case, so that it will match "Cats" or "signifiCATion" as well, use the i modifier on the pattern:

/cat/i  

To search for a whole phrase, use a pattern like this one:

/the fat cat sat on the mat/i

You can use regular expression syntax for more complicated patterns:

/the \s+ (fat \s+)? cat \s+ sat \s+ (up)?on \s+ the \s+ [a-z]+/ix

Will match "the fat cat sat on the mat", "The CAT sat upon the mat", "The FAT cAt sat upon the dais," and a number of other phrases.

Installation

To use FWP+: Keyword Filters, you will need:

  • an installed and configured copy of [WordPress].

  • an installed and configured copy of [FeedWordPress][]

  • FTP, SFTP or shell access to your web host

Here's what you do.

  1. Download the FWP+: Keyword Filters installation package and extract the files on your computer.

  2. Create a new directory named fwp-keyword-filters in the wp-content/plugins directory of your WordPress installation. Use an FTP or SFTP client to upload the contents of the installation package to the new directory that you just created on your web host.

  3. Log in to the WordPress Dashboard, go to the Plugins page, and activate the FWP+: Keyword Filters module.

License

FWP+: Keyword Filters plugin is copyright © 2010-2012 by Charles Johnson.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program 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 General Public License for more details.

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