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173 lines
6.2 KiB
PHP
173 lines
6.2 KiB
PHP
<?php
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/*
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Plugin Name: Highlight Search Terms
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Plugin URI: http://status301.net/wordpress-plugins/highlight-search-terms
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Description: Wraps search terms in the HTML5 mark tag when referrer is a non-secure search engine or within wp search results. Read <a href="http://wordpress.org/extend/plugins/highlight-search-terms/other_notes/">Other Notes</a> for instructions and examples for styling the highlights. <a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=ravanhagen%40gmail%2ecom&item_name=Highlight%20Search%20Terms&no_shipping=0&tax=0&bn=PP%2dDonationsBF&charset=UTF%2d8&lc=us" title="Thank you!">Tip jar</a>.
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Version: 1.5.5
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Author: RavanH
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Author URI: http://status301.net/
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Text Domain: highlight-search-terms
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*/
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/* Copyright 2020 RavanH (email : ravanhagen@gmail.com)
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, <http://www.gnu.org/licenses/> or
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write to the Free Software Foundation Inc., 59 Temple Place,
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Suite 330, Boston, MA 02111-1307 USA.
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The GNU General Public License does not permit incorporating this
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program into proprietary programs.
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*/
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if ( ! defined( 'WPINC' ) ) die;
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/* -----------------
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* CLASS
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* ----------------- */
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class HighlightSearchTerms {
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/**
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* Plugin variables
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*/
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// plugin version
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private static $version = '1.5.3';
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// filtered search terms
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private static $search_terms = null;
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// Change or extend this to match themes content div ID or classes.
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// The hilite script will test div ids/classes and use the first one it finds.
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// When referencing an *ID name*, just be sure to begin with a '#'.
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// When referencing a *class name*, try to put the tag in front,
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// followed by a '.' and then the class name to *improve script speed*.
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static $areas = array(
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'#groups-dir-list', '#members-dir-list', // BuddyPress compat
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'div.bbp-topic-content,div.bbp-reply-content,li.bbp-forum-info,.bbp-topic-title,.bbp-reply-title', // bbPress compat
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'article',
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'div.hentry',
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'div.post',
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'#content',
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'#main',
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'div.content',
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'#middle',
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'#container',
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'div.container',
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'div.page',
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'#wrapper',
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'body'
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);
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/**
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* Plugin functions
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*/
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public static function init() {
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// -- HOOKING INTO WP -- //
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// append search query string to results permalinks
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// wp is the earliest hook where get_query_var('search_terms') will return results
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add_action( 'wp', array(__CLASS__,'add_url_filters') );
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// enqueue main script
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add_action( 'wp_enqueue_scripts', array(__CLASS__, 'enqueue_script') );
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// text domain
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//if ( is_admin() )
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// add_action('plugins_loaded', array(__CLASS__, 'load_textdomain'));
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}
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public static function load_textdomain() {
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load_plugin_textdomain( 'highlight-search-terms' );
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}
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public static function add_url_filters() {
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if ( !is_admin() && self::have_search_terms() ) {
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add_filter('post_link', array(__CLASS__,'append_search_query') );
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add_filter('post_type_link', array(__CLASS__,'append_search_query') );
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add_filter('page_link', array(__CLASS__,'append_search_query') );
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// for bbPress search result links
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add_filter('bbp_get_topic_permalink', array(__CLASS__,'append_search_query') );
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add_filter('bbp_get_reply_url', array(__CLASS__,'append_search_query') );
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}
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}
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public static function append_search_query( $url ) {
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// we need in_the_loop() check here to prevent apending query to menu links. But it breaks bbPress url support...
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if ( in_the_loop() && self::have_search_terms() ) {
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$url = add_query_arg('hilite', urlencode( "'" . implode("','",self::$search_terms) . "'" ), $url);
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}
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return $url;
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}
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public static function enqueue_script() {
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// abort if no search the_terms
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if ( ! self::have_search_terms() ) return;
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if ( defined('WP_DEBUG') && true == WP_DEBUG )
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wp_enqueue_script( 'hlst-extend', plugins_url('hlst-extend.js', __FILE__), array('jquery'), self::$version, true );
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else
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wp_enqueue_script( 'hlst-extend', plugins_url('hlst-extend.min.js', __FILE__), array('jquery'), self::$version, true );
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$script = '/* Highlight Search Terms ' . self::$version . ' ( RavanH - http://status301.net/wordpress-plugins/highlight-search-terms/ ) */' . PHP_EOL;
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$script .= 'var hlst_query = ';
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$script .= wp_json_encode( (array) self::$search_terms );
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$script .= '; var hlst_areas = ' . wp_json_encode( (array) self::$areas) . ';';
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wp_add_inline_script( 'hlst-extend', $script, 'before' );
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}
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public static function sanitize_terms( $search ) {
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$sanitized = array();
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foreach( $search as $term ) {
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$sanitized[] = wp_strip_all_tags( $term );
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}
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return $sanitized;
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}
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public static function split_search_terms( $search ) {
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$return = array();
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if ( preg_match_all( '/([^\s"\',\+]+)|"([^"]*)"|\'([^\']*)\'/', stripslashes( urldecode( $search ) ), $terms ) ) {
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foreach( $terms[0] as $term ) {
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$term = trim( str_replace( array( '"','\'','%22','%27' ), '', $term ) );
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if ( !empty($term) )
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$return[] = wp_strip_all_tags( $term );
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}
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}
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return $return;
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}
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private static function have_search_terms() {
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// did we not look for search terms before?
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if ( !isset( self::$search_terms ) ) {
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// try regular parsed WP search terms
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if ( $searches = get_query_var( 'search_terms', false ) )
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self::$search_terms = self::sanitize_terms( $searches );
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// try for bbPress search or click-through from WP search results page
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elseif ( $search = get_query_var( 'bbp_search', false ) OR ( isset($_GET['hilite']) AND $search = $_GET['hilite'] ) )
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self::$search_terms = self::split_search_terms( $search );
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// nothing? then just leave empty array
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else
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self::$search_terms = array();
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}
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return empty( self::$search_terms ) ? false : true;
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}
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}
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HighlightSearchTerms::init();
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