GIT.Harvie.CZ / mirrors / Kyberia-bloodline.git / blame
| Commit | Line | Data |
|---|---|---|
| 51ff3226 | 1 | <?php |
| 2 | /** | |
| 3 | * Smarty plugin | |
| 4 | * @package Smarty | |
| 5 | * @subpackage plugins | |
| 6 | */ | |
| 7 | ||
| 8 | ||
| 9 | /** | |
| 10 | * Smarty {math} function plugin | |
| 11 | * | |
| 12 | * Type: function<br> | |
| 13 | * Name: math<br> | |
| 14 | * Purpose: handle math computations in template<br> | |
| 15 | * @link http://smarty.php.net/manual/en/language.function.math.php {math} | |
| 16 | * (Smarty online manual) | |
| 9b7c11be | 17 | * @author Monte Ohrt <monte at ohrt dot com> |
| 51ff3226 | 18 | * @param array |
| 19 | * @param Smarty | |
| 20 | * @return string | |
| 21 | */ | |
| 22 | function smarty_function_math($params, &$smarty) | |
| 23 | { | |
| 24 | // be sure equation parameter is present | |
| 25 | if (empty($params['equation'])) { | |
| 26 | $smarty->trigger_error("math: missing equation parameter"); | |
| 27 | return; | |
| 28 | } | |
| 29 | ||
| 9b7c11be H |
30 | // strip out backticks, not necessary for math |
| 31 | $equation = str_replace('`','',$params['equation']); | |
| 51ff3226 | 32 | |
| 33 | // make sure parenthesis are balanced | |
| 34 | if (substr_count($equation,"(") != substr_count($equation,")")) { | |
| 35 | $smarty->trigger_error("math: unbalanced parenthesis"); | |
| 36 | return; | |
| 37 | } | |
| 38 | ||
| 39 | // match all vars in equation, make sure all are passed | |
| 40 | preg_match_all("!(?:0x[a-fA-F0-9]+)|([a-zA-Z][a-zA-Z0-9_]+)!",$equation, $match); | |
| 41 | $allowed_funcs = array('int','abs','ceil','cos','exp','floor','log','log10', | |
| 42 | 'max','min','pi','pow','rand','round','sin','sqrt','srand','tan'); | |
| 9b7c11be | 43 | |
| 51ff3226 | 44 | foreach($match[1] as $curr_var) { |
| 45 | if ($curr_var && !in_array($curr_var, array_keys($params)) && !in_array($curr_var, $allowed_funcs)) { | |
| 46 | $smarty->trigger_error("math: function call $curr_var not allowed"); | |
| 47 | return; | |
| 48 | } | |
| 49 | } | |
| 50 | ||
| 51 | foreach($params as $key => $val) { | |
| 52 | if ($key != "equation" && $key != "format" && $key != "assign") { | |
| 53 | // make sure value is not empty | |
| 54 | if (strlen($val)==0) { | |
| 55 | $smarty->trigger_error("math: parameter $key is empty"); | |
| 56 | return; | |
| 57 | } | |
| 58 | if (!is_numeric($val)) { | |
| 59 | $smarty->trigger_error("math: parameter $key: is not numeric"); | |
| 60 | return; | |
| 61 | } | |
| 9b7c11be | 62 | $equation = preg_replace("/\b$key\b/", " \$params['$key'] ", $equation); |
| 51ff3226 | 63 | } |
| 64 | } | |
| 65 | ||
| 66 | eval("\$smarty_math_result = ".$equation.";"); | |
| 67 | ||
| 68 | if (empty($params['format'])) { | |
| 69 | if (empty($params['assign'])) { | |
| 70 | return $smarty_math_result; | |
| 71 | } else { | |
| 72 | $smarty->assign($params['assign'],$smarty_math_result); | |
| 73 | } | |
| 74 | } else { | |
| 75 | if (empty($params['assign'])){ | |
| 76 | printf($params['format'],$smarty_math_result); | |
| 77 | } else { | |
| 78 | $smarty->assign($params['assign'],sprintf($params['format'],$smarty_math_result)); | |
| 79 | } | |
| 80 | } | |
| 81 | } | |
| 82 | ||
| 83 | /* vim: set expandtab: */ | |
| 84 | ||
| 85 | ?> |