Gecko [ v3.cesa.co.za ]

Name	Size	Permission	Date
adodb	[ DIR ]	drwxr-sr-x	2017-06-22 15:31
ajax	[ DIR ]	drwxr-sr-x	2017-06-22 15:31
amd	[ DIR ]	drwxr-sr-x	2017-06-22 15:19
antivirus	[ DIR ]	drwxr-sr-x	2017-06-22 15:19
behat	[ DIR ]	drwxr-sr-x	2017-06-22 15:32
bennu	[ DIR ]	drwxr-sr-x	2017-06-22 15:32
classes	[ DIR ]	drwxr-sr-x	2017-06-22 15:34
db	[ DIR ]	drwxr-sr-x	2017-06-22 15:34
ddl	[ DIR ]	drwxr-sr-x	2017-06-22 15:34
dml	[ DIR ]	drwxr-sr-x	2017-06-22 15:35
dtl	[ DIR ]	drwxr-sr-x	2017-06-22 15:35
editor	[ DIR ]	drwxr-sr-x	2017-06-22 15:37
evalmath	[ DIR ]	drwxr-sr-x	2017-06-22 15:40
external	[ DIR ]	drwxr-sr-x	2017-06-22 15:40
filebrowser	[ DIR ]	drwxr-sr-x	2017-06-22 15:40
filestorage	[ DIR ]	drwxr-sr-x	2017-06-22 15:40
form	[ DIR ]	drwxr-sr-x	2017-06-22 15:40
google	[ DIR ]	drwxr-sr-x	2017-06-22 15:40
grade	[ DIR ]	drwxr-sr-x	2017-06-22 15:42
horde	[ DIR ]	drwxr-sr-x	2017-06-22 15:44
html2text	[ DIR ]	drwxr-sr-x	2017-06-22 15:44
htmlpurifier	[ DIR ]	drwxr-sr-x	2017-06-22 15:45
jabber	[ DIR ]	drwxr-sr-x	2017-06-22 15:45
jquery	[ DIR ]	drwxr-sr-x	2017-06-22 15:45
lessphp	[ DIR ]	drwxr-sr-x	2017-06-22 15:46
ltiprovider	[ DIR ]	drwxr-sr-x	2017-06-22 15:46
markdown	[ DIR ]	drwxr-sr-x	2017-06-22 15:46
maxmind	[ DIR ]	drwxr-sr-x	2017-06-22 15:46
minify	[ DIR ]	drwxr-sr-x	2017-06-22 15:46
mustache	[ DIR ]	drwxr-sr-x	2017-06-22 15:47
password_compat	[ DIR ]	drwxr-sr-x	2017-06-22 15:30
pear	[ DIR ]	drwxr-sr-x	2017-06-22 15:47
php-css-parser	[ DIR ]	drwxr-sr-x	2017-06-22 15:47
phpexcel	[ DIR ]	drwxr-sr-x	2017-06-22 15:49
phpmailer	[ DIR ]	drwxr-sr-x	2017-06-22 15:49
phpunit	[ DIR ]	drwxr-sr-x	2017-06-22 15:49
portfolio	[ DIR ]	drwxr-sr-x	2017-06-22 15:49
requirejs	[ DIR ]	drwxr-sr-x	2017-06-22 15:49
rtlcss	[ DIR ]	drwxr-sr-x	2017-06-22 15:49
scssphp	[ DIR ]	drwxr-sr-x	2017-06-22 15:49
simplepie	[ DIR ]	drwxr-sr-x	2017-06-22 15:49
spout	[ DIR ]	drwxr-sr-x	2017-06-22 15:49
tcpdf	[ DIR ]	drwxr-sr-x	2017-06-22 15:51
templates	[ DIR ]	drwxr-sr-x	2017-06-22 15:51
testing	[ DIR ]	drwxr-sr-x	2017-06-22 15:51
tests	[ DIR ]	drwxr-sr-x	2017-06-22 15:52
typo3	[ DIR ]	drwxr-sr-x	2017-06-22 15:52
xhprof	[ DIR ]	drwxr-sr-x	2017-06-22 15:53
xmldb	[ DIR ]	drwxr-sr-x	2017-06-22 15:53
yui	[ DIR ]	drwxr-sr-x	2017-06-22 15:53
yuilib	[ DIR ]	drwxr-sr-x	2017-06-22 16:01
accesslib.php	257.12 KB	-rw-r--r--	2017-06-22 15:30
adminlib.php	345.63 KB	-rw-r--r--	2017-06-22 15:30
authlib.php	26.75 KB	-rw-r--r--	2017-06-22 15:32
badgeslib.php	42.95 KB	-rw-r--r--	2017-06-22 15:32
blocklib.php	97.26 KB	-rw-r--r--	2017-06-22 15:32
boxlib.php	8.08 KB	-rw-r--r--	2017-06-22 15:32
cacert.pem	239.21 KB	-rw-r--r--	2017-06-22 15:32
cacert.txt	811 B	-rw-r--r--	2017-06-22 15:32
clilib.php	6.62 KB	-rw-r--r--	2017-06-22 15:34
completionlib.php	46.36 KB	-rw-r--r--	2017-06-22 15:34
componentlib.class.php	29.2 KB	-rw-r--r--	2017-06-22 15:34
conditionlib.php	1.11 KB	-rw-r--r--	2017-06-22 15:34
configonlylib.php	6.48 KB	-rw-r--r--	2017-06-22 15:34
cookies.js	2.37 KB	-rw-r--r--	2017-06-22 15:34
coursecatlib.php	124.32 KB	-rw-r--r--	2017-06-22 15:34
cronlib.php	11.08 KB	-rw-r--r--	2017-06-22 15:34
csslib.php	14.42 KB	-rw-r--r--	2017-06-22 15:34
csvlib.class.php	17.25 KB	-rw-r--r--	2017-06-22 15:34
customcheckslib.php	1.5 KB	-rw-r--r--	2017-06-22 15:34
dataformatlib.php	2.48 KB	-rw-r--r--	2017-06-22 15:34
datalib.php	65.83 KB	-rw-r--r--	2017-06-22 15:34
ddllib.php	4.71 KB	-rw-r--r--	2017-06-22 15:34
default.ttf	502.23 KB	-rw-r--r--	2017-06-22 15:34
deprecatedlib.php	227.36 KB	-rw-r--r--	2017-06-22 15:34
dmllib.php	12.29 KB	-rw-r--r--	2017-06-22 15:35
dtllib.php	2.58 KB	-rw-r--r--	2017-06-22 15:35
editorlib.php	6.43 KB	-rw-r--r--	2017-06-22 15:40
emptyfile.php	809 B	-rw-r--r--	2017-06-22 15:40
enrollib.php	100.43 KB	-rw-r--r--	2017-06-22 15:40
environmentlib.php	54.94 KB	-rw-r--r--	2017-06-22 15:40
eventslib.php	4.58 KB	-rw-r--r--	2017-06-22 15:40
excellib.class.php	29.16 KB	-rw-r--r--	2017-06-22 15:40
externallib.php	52.09 KB	-rw-r--r--	2017-06-22 15:40
filelib.php	177.78 KB	-rw-r--r--	2017-06-22 15:40
filterlib.php	56.44 KB	-rw-r--r--	2017-06-22 15:40
flickrlib.php	51.75 KB	-rw-r--r--	2017-06-22 15:40
formslib.php	127.64 KB	-rw-r--r--	2017-06-22 15:40
gdlib.php	16.96 KB	-rw-r--r--	2017-06-22 15:40
googleapi.php	16.34 KB	-rw-r--r--	2017-06-22 15:41
gradelib.php	60.36 KB	-rw-r--r--	2017-06-22 15:42
graphlib.php	83.1 KB	-rw-r--r--	2017-06-22 15:42
grouplib.php	38.34 KB	-rw-r--r--	2017-06-22 15:42
htaccess	1.84 KB	-rw-r--r--	2017-06-22 15:44
index.html	1 B	-rw-r--r--	2017-06-22 15:45
installlib.php	18 KB	-rw-r--r--	2017-06-22 15:45
javascript-static.js	56.77 KB	-rw-r--r--	2017-06-22 15:45
javascript.php	4.09 KB	-rw-r--r--	2017-06-22 15:45
jslib.php	4.15 KB	-rw-r--r--	2017-06-22 15:46
ldaplib.php	18.07 KB	-rw-r--r--	2017-06-22 15:46
lexer.php	16.07 KB	-rw-r--r--	2017-06-22 15:46
licenselib.php	7.25 KB	-rw-r--r--	2017-06-22 15:46
listlib.php	22.2 KB	-rw-r--r--	2017-06-22 15:46
mathslib.php	4.58 KB	-rw-r--r--	2017-06-22 15:46
medialib.php	5.4 KB	-rw-r--r--	2017-06-22 15:46
messagelib.php	25.68 KB	-rw-r--r--	2017-06-22 15:46
modinfolib.php	103.04 KB	-rw-r--r--	2017-06-22 15:46
moodlelib.php	345.25 KB	-rw-r--r--	2017-06-22 15:47
myprofilelib.php	20.9 KB	-rw-r--r--	2017-06-22 15:47
navigationlib.php	236.48 KB	-rw-r--r--	2017-06-22 15:47
oauthlib.php	21.11 KB	-rw-r--r--	2017-06-22 15:47
odslib.class.php	57.36 KB	-rw-r--r--	2017-06-22 15:47
outputactions.php	7.11 KB	-rw-r--r--	2017-06-22 15:47
outputcomponents.php	149.65 KB	-rw-r--r--	2017-06-22 15:47
outputfactories.php	18.11 KB	-rw-r--r--	2017-06-22 15:47
outputfragmentrequirementslib.php	4.17 KB	-rw-r--r--	2017-06-22 15:47
outputlib.php	85.67 KB	-rw-r--r--	2017-06-22 15:47
outputrenderers.php	194.47 KB	-rw-r--r--	2017-06-22 15:47
outputrequirementslib.php	82.56 KB	-rw-r--r--	2017-06-22 15:47
pagelib.php	77.05 KB	-rw-r--r--	2017-06-22 15:47
pdflib.php	9.23 KB	-rw-r--r--	2017-06-22 15:47
plagiarismlib.php	6.9 KB	-rw-r--r--	2017-06-22 15:49
portfoliolib.php	54.31 KB	-rw-r--r--	2017-06-22 15:49
questionlib.php	69.63 KB	-rw-r--r--	2017-06-22 15:49
recaptchalib.php	12.38 KB	-rw-r--r--	2017-06-22 15:49
requirejs.php	5.25 KB	-rw-r--r--	2017-06-22 15:49
resourcelib.php	8.91 KB	-rw-r--r--	2017-06-22 15:49
rsslib.php	17.93 KB	-rw-r--r--	2017-06-22 15:49
searchlib.php	16.23 KB	-rw-r--r--	2017-06-22 15:49
sessionkeepalive_ajax.php	1.21 KB	-rw-r--r--	2017-06-22 15:49
sessionlib.php	6.85 KB	-rw-r--r--	2017-06-22 15:49
setup.php	38.93 KB	-rw-r--r--	2017-06-22 15:49
setuplib.php	72.26 KB	-rw-r--r--	2017-06-22 15:49
soaplib.php	5.23 KB	-rw-r--r--	2017-06-22 15:49
statslib.php	67.12 KB	-rw-r--r--	2017-06-22 15:50
tablelib.php	60.3 KB	-rw-r--r--	2017-06-22 15:50
thirdpartylibs.xml	7.62 KB	-rw-r--r--	2017-06-22 15:52
tokeniserlib.php	16.48 KB	-rw-r--r--	2017-06-22 15:52
upgrade.txt	61.47 KB	-rw-r--r--	2017-06-22 15:52
upgradelib.php	90.37 KB	-rw-r--r--	2017-06-22 15:52
uploadlib.php	1.9 KB	-rw-r--r--	2017-06-22 15:52
validateurlsyntax.php	22.73 KB	-rw-r--r--	2017-06-22 15:52
webdavlib.php	67.84 KB	-rw-r--r--	2017-06-22 15:52
weblib.php	118.7 KB	-rw-r--r--	2017-06-22 15:52
wiki_to_markdown.php	13.12 KB	-rw-r--r--	2017-06-22 15:52
womenslib.php	1021 B	-rw-r--r--	2017-06-22 15:52
wordlist.txt	1.23 KB	-rw-r--r--	2017-06-22 15:52
xhtml.xsl	223 B	-rw-r--r--	2017-06-22 15:53
xmlize.php	6.63 KB	-rw-r--r--	2017-06-22 15:53
xsendfilelib.php	2.59 KB	-rw-r--r--	2017-06-22 15:53

Rename

<?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/>.

/**
 * @package    core
 * @subpackage lib
 * @copyright  Petr Skoda (skodak)
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

/** @see evalmath/evalmath.class.php */
require_once $CFG->dirroot.'/lib/evalmath/evalmath.class.php';

/**
 * This class abstracts evaluation of spreadsheet formulas.
 * See unit tests in lib/tests/mathslib_test.php for sample usage.
 *
 * @package moodlecore
 * @copyright Petr Skoda (skodak)
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class calc_formula {

// private properties
    var $_em;
    var $_nfx   = false;   // postfix notation
    var $_error = false; // last error

/**
     * Constructor for spreadsheet formula with optional parameters
     *
     * @param string $formula with leading =
     * @param array $params associative array of parameters used in formula. All parameter names must be lowercase!
     */
    public function __construct($formula, $params=false) {
        $this->_em = new EvalMath();
        $this->_em->suppress_errors = true; // no PHP errors!
        if (strpos($formula, '=') !== 0) {
            $this->_error = "missing leading '='";
            return;
        }
        $formula = substr($formula, 1);
        if (strpos($formula, '=') !== false) {
            $this->_error = "too many '='";
            return;
        }
        $this->_nfx = $this->_em->nfx($formula);
        if ($this->_nfx == false) {
            $this->_error = $this->_em->last_error;
            return;
        }
        if ($params != false) {
            $this->set_params($params);
        }
    }

/**
     * Old syntax of class constructor. Deprecated in PHP7.
     *
     * @deprecated since Moodle 3.1
     */
    public function calc_formula($formula, $params=false) {
        debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
        self::__construct($formula, $params);
    }

/**
     * Raplace parameters used in existing formula,
     * parameter names must contain only lowercase [a-z] letters, no other characters are allowed!
     *
     * @param array $params associative array of parameters used in formula
     */
    function set_params($params) {
        $this->_em->v = $params;
    }

/**
     * Evaluate formula
     *
     * @return mixed number if ok, false if error
     */
    function evaluate() {
        if ($this->_nfx == false) {
            return false;
        }
        $res = $this->_em->pfx($this->_nfx);
        if ($res === false) {
            $this->_error = $this->_em->last_error;
            return false;
        } else {
            $this->_error = false;
            return $res;
        }
    }

/**
     * Get last error.
     * TODO: localize the strings from contructor and EvalMath library
     *
     * @return mixed string with last error description or false if ok
     */
    function get_error() {
        return $this->_error;
    }

/**
     * Similar to format_float, formats the numbers and list separators
     * according to locale specifics.
     * @param string $formula
     * @return string localised formula
     */
    public static function localize($formula) {
        $formula = str_replace('.', '$', $formula); // temp placeholder
        $formula = str_replace(',', get_string('listsep', 'langconfig'), $formula);
        $formula = str_replace('$', get_string('decsep', 'langconfig'), $formula);
        return $formula;
    }

/**
     * Similar to unformat_float, converts floats and lists to PHP standards.
     * @param string $formula localised formula
     * @return string
     */
    public static function unlocalize($formula) {
        $formula = str_replace(get_string('decsep', 'langconfig'), '$', $formula);
        $formula = str_replace(get_string('listsep', 'langconfig'), ',', $formula);
        $formula = str_replace('$', '.', $formula); // temp placeholder
        return $formula;
    }
}