mirror of
https://port.numenaute.org/aleajactaest/khanat-code-old.git
synced 2024-11-17 21:11:39 +00:00
85 lines
No EOL
2.6 KiB
PHP
85 lines
No EOL
2.6 KiB
PHP
<?php
|
|
/**
|
|
* Smarty plugin
|
|
* @package Smarty
|
|
* @subpackage plugins
|
|
*/
|
|
|
|
|
|
/**
|
|
* Smarty {math} function plugin
|
|
*
|
|
* Type: function<br>
|
|
* Name: math<br>
|
|
* Purpose: handle math computations in template<br>
|
|
* @link http://smarty.php.net/manual/en/language.function.math.php {math}
|
|
* (Smarty online manual)
|
|
* @author Monte Ohrt <monte at ohrt dot com>
|
|
* @param array
|
|
* @param Smarty
|
|
* @return string
|
|
*/
|
|
function smarty_function_math($params, &$smarty)
|
|
{
|
|
// be sure equation parameter is present
|
|
if (empty($params['equation'])) {
|
|
$smarty->trigger_error("math: missing equation parameter");
|
|
return;
|
|
}
|
|
|
|
// strip out backticks, not necessary for math
|
|
$equation = str_replace('`','',$params['equation']);
|
|
|
|
// make sure parenthesis are balanced
|
|
if (substr_count($equation,"(") != substr_count($equation,")")) {
|
|
$smarty->trigger_error("math: unbalanced parenthesis");
|
|
return;
|
|
}
|
|
|
|
// match all vars in equation, make sure all are passed
|
|
preg_match_all("!(?:0x[a-fA-F0-9]+)|([a-zA-Z][a-zA-Z0-9_]*)!",$equation, $match);
|
|
$allowed_funcs = array('int','abs','ceil','cos','exp','floor','log','log10',
|
|
'max','min','pi','pow','rand','round','sin','sqrt','srand','tan');
|
|
|
|
foreach($match[1] as $curr_var) {
|
|
if ($curr_var && !in_array($curr_var, array_keys($params)) && !in_array($curr_var, $allowed_funcs)) {
|
|
$smarty->trigger_error("math: function call $curr_var not allowed");
|
|
return;
|
|
}
|
|
}
|
|
|
|
foreach($params as $key => $val) {
|
|
if ($key != "equation" && $key != "format" && $key != "assign") {
|
|
// make sure value is not empty
|
|
if (strlen($val)==0) {
|
|
$smarty->trigger_error("math: parameter $key is empty");
|
|
return;
|
|
}
|
|
if (!is_numeric($val)) {
|
|
$smarty->trigger_error("math: parameter $key: is not numeric");
|
|
return;
|
|
}
|
|
$equation = preg_replace("/\b$key\b/", " \$params['$key'] ", $equation);
|
|
}
|
|
}
|
|
|
|
eval("\$smarty_math_result = ".$equation.";");
|
|
|
|
if (empty($params['format'])) {
|
|
if (empty($params['assign'])) {
|
|
return $smarty_math_result;
|
|
} else {
|
|
$smarty->assign($params['assign'],$smarty_math_result);
|
|
}
|
|
} else {
|
|
if (empty($params['assign'])){
|
|
printf($params['format'],$smarty_math_result);
|
|
} else {
|
|
$smarty->assign($params['assign'],sprintf($params['format'],$smarty_math_result));
|
|
}
|
|
}
|
|
}
|
|
|
|
/* vim: set expandtab: */
|
|
|
|
?>
|