diff options
Diffstat (limited to 'lib/smarty3/plugins/function.math.php')
| -rw-r--r-- | lib/smarty3/plugins/function.math.php | 78 |
1 files changed, 43 insertions, 35 deletions
diff --git a/lib/smarty3/plugins/function.math.php b/lib/smarty3/plugins/function.math.php index 655fe72..7348d96 100644 --- a/lib/smarty3/plugins/function.math.php +++ b/lib/smarty3/plugins/function.math.php @@ -6,16 +6,15 @@ * @package Smarty * @subpackage PluginsFunction */ - /** * Smarty {math} function plugin - * Type: function<br> - * Name: math<br> + * Type: function + * Name: math * Purpose: handle math computations in template * - * @link http://www.smarty.net/manual/en/language.function.math.php {math} + * @link http://www.smarty.net/manual/en/language.function.math.php {math} * (Smarty online manual) - * @author Monte Ohrt <monte at ohrt dot com> + * @author Monte Ohrt <monte at ohrt dot com> * * @param array $params parameters * @param Smarty_Internal_Template $template template object @@ -25,69 +24,78 @@ function smarty_function_math($params, $template) { static $_allowed_funcs = - array('int' => true, 'abs' => true, 'ceil' => true, 'cos' => true, 'exp' => true, 'floor' => true, - 'log' => true, 'log10' => true, 'max' => true, 'min' => true, 'pi' => true, 'pow' => true, 'rand' => true, - 'round' => true, 'sin' => true, 'sqrt' => true, 'srand' => true, 'tan' => true); + array( + 'int' => true, + 'abs' => true, + 'ceil' => true, + 'cos' => true, + 'exp' => true, + 'floor' => true, + 'log' => true, + 'log10' => true, + 'max' => true, + 'min' => true, + 'pi' => true, + 'pow' => true, + 'rand' => true, + 'round' => true, + 'sin' => true, + 'sqrt' => true, + 'srand' => true, + 'tan' => true + ); // be sure equation parameter is present if (empty($params[ 'equation' ])) { trigger_error("math: missing equation parameter", E_USER_WARNING); - return; } - $equation = $params[ 'equation' ]; - // make sure parenthesis are balanced - if (substr_count($equation, "(") != substr_count($equation, ")")) { + if (substr_count($equation, '(') !== substr_count($equation, ')')) { trigger_error("math: unbalanced parenthesis", E_USER_WARNING); - return; } - // disallow backticks if (strpos($equation, '`') !== false) { trigger_error("math: backtick character not allowed in equation", E_USER_WARNING); - return; } - // also disallow dollar signs if (strpos($equation, '$') !== false) { trigger_error("math: dollar signs not allowed in equation", E_USER_WARNING); - return; } - + foreach ($params as $key => $val) { + if ($key !== 'equation' && $key !== 'format' && $key !== 'assign') { + // make sure value is not empty + if (strlen($val) === 0) { + trigger_error("math: parameter '{$key}' is empty", E_USER_WARNING); + return; + } + if (!is_numeric($val)) { + trigger_error("math: parameter '{$key}' is not numeric", E_USER_WARNING); + return; + } + } + } // match all vars in equation, make sure all are passed preg_match_all('!(?:0x[a-fA-F0-9]+)|([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)!', $equation, $match); - foreach ($match[ 1 ] as $curr_var) { if ($curr_var && !isset($params[ $curr_var ]) && !isset($_allowed_funcs[ $curr_var ])) { - trigger_error("math: function call $curr_var not allowed", E_USER_WARNING); - + trigger_error( + "math: function call '{$curr_var}' not allowed, or missing parameter '{$curr_var}'", + E_USER_WARNING + ); return; } } - foreach ($params as $key => $val) { - if ($key != "equation" && $key != "format" && $key != "assign") { - // make sure value is not empty - if (strlen($val) == 0) { - trigger_error("math: parameter $key is empty", E_USER_WARNING); - - return; - } - if (!is_numeric($val)) { - trigger_error("math: parameter $key: is not numeric", E_USER_WARNING); - - return; - } + if ($key !== 'equation' && $key !== 'format' && $key !== 'assign') { $equation = preg_replace("/\b$key\b/", " \$params['$key'] ", $equation); } } $smarty_math_result = null; eval("\$smarty_math_result = " . $equation . ";"); - if (empty($params[ 'format' ])) { if (empty($params[ 'assign' ])) { return $smarty_math_result; |