#Gocha#

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle 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.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/** Configurable Reports
 * A Moodle block for creating customizable reports
 * @package blocks
 * @author: Juan leyva <http://www.twitter.com/jleyvadelgado>
 * @date: 2009
 */

require_once($CFG->dirroot.'/blocks/configurable_reports/plugin.class.php');

class plugin_searchtext extends plugin_base{

public function init() {
        $this->form = false;
        $this->unique = true;
        $this->fullname = get_string('filter_searchtext', 'block_configurable_reports');
        $this->reporttypes = array('searchtext', 'sql');
    }

public function summary($data) {
        return get_string('filter_searchtext_summary', 'block_configurable_reports');
    }

public function execute($finalelements, $data) {

$filtersearchtext = optional_param('filter_searchtext', '', PARAM_RAW);
        $operators = array('=', '<', '>', '<=', '>=', '~', 'in');

if (!$filtersearchtext) {
            return $finalelements;
        }

if ($this->report->type != 'sql') {
            return array($filtersearchtext);
        } else {
            if (preg_match("/%%FILTER_SEARCHTEXT:([^%]+)%%/i", $finalelements, $output)) {
                list($field, $operator) = preg_split('/:/', $output[1]);
                if (!in_array($operator, $operators)) {
                    print_error('nosuchoperator');
                }
                if ($operator == '~') {
                    $replace = " AND ".$field." LIKE '%".$filtersearchtext."%'";
                } else if ($operator == 'in') {
                    $processeditems = array();
                    // Accept comma-separated values, allowing for '\,' as a literal comma.
                    foreach (preg_split("/(?<!\\\\),/", $filtersearchtext) as $searchitem) {
                        // Strip leading/trailing whitespace and quotes (we'll add our own quotes later).
                        $searchitem = trim($searchitem);
                        $searchitem = trim($searchitem, '"\'');

// We can also safely remove escaped commas now.
                        $searchitem = str_replace('\\,', ',', $searchitem);

// Escape and quote strings...
                        if (!is_numeric($searchitem)) {
                            $searchitem = "'".addslashes($searchitem)."'";
                        }
                        $processeditems[] = "$field like $searchitem";
                    }
                    // Despite the name, by not actually using in() we can support wildcards, and maybe be more portable as well.
                    $replace = " AND (".implode(" OR ", $processeditems).")";
                } else {
                    $replace = ' AND '.$field.' '.$operator.' '.$filtersearchtext;
                }
                return str_replace('%%FILTER_SEARCHTEXT:'.$output[1].'%%', $replace, $finalelements);
            }
        }
        return $finalelements;
    }

public function print_filter(&$mform) {
        $filtersearchtext = optional_param('filter_searchtext', '', PARAM_RAW);
        $mform->addElement('text', 'filter_searchtext', get_string('filter'));
        $mform->setType('filter_searchtext', PARAM_RAW);
        $mform->setDefault('filter_searchtext', $filtersearchtext);
    }
}