smarty/plugins/modifier.escape.php
author Dan
Sun, 24 Aug 2008 01:28:52 -0400
changeset 37 65e70ada71c9
parent 0 c63de9eb7045
permissions -rw-r--r--
Major changes to webserver backend. All socket functions are abstracted to allow support for stream_* which seems to be both more widely supported and better at handling blocking and timeouts, at the cost of a small bit of speed. Keep-Alive times out properly and thanks to a bit of IPC code from stream_create_pair(), zombie children are mostly eliminated by proper pcntl_wait() being called when a child shuts down normally, and children die within 0.2sec if the parent receives a SIGTERM or SIGINT, even if the children are waiting on the socket.
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<?php
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/**
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 * Smarty plugin
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 * @package Smarty
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 * @subpackage plugins
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 */
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/**
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 * Smarty escape modifier plugin
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 *
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 * Type:     modifier<br>
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 * Name:     escape<br>
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 * Purpose:  Escape the string according to escapement type
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 * @link http://smarty.php.net/manual/en/language.modifier.escape.php
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 *          escape (Smarty online manual)
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 * @author   Monte Ohrt <monte at ohrt dot com>
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 * @param string
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 * @param html|htmlall|url|quotes|hex|hexentity|javascript
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 * @return string
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 */
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function smarty_modifier_escape($string, $esc_type = 'html', $char_set = 'ISO-8859-1')
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{
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    switch ($esc_type) {
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        case 'html':
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            return htmlspecialchars($string, ENT_QUOTES, $char_set);
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        case 'htmlall':
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            return htmlentities($string, ENT_QUOTES, $char_set);
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        case 'url':
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            return rawurlencode($string);
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        case 'urlpathinfo':
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            return str_replace('%2F','/',rawurlencode($string));
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        case 'quotes':
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            // escape unescaped single quotes
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            return preg_replace("%(?<!\\\\)'%", "\\'", $string);
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        case 'hex':
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            // escape every character into hex
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            $return = '';
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            for ($x=0; $x < strlen($string); $x++) {
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                $return .= '%' . bin2hex($string[$x]);
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            }
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            return $return;
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        case 'hexentity':
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            $return = '';
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            for ($x=0; $x < strlen($string); $x++) {
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                $return .= '&#x' . bin2hex($string[$x]) . ';';
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            }
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            return $return;
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        case 'decentity':
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            $return = '';
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            for ($x=0; $x < strlen($string); $x++) {
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                $return .= '&#' . ord($string[$x]) . ';';
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            }
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            return $return;
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        case 'javascript':
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            // escape quotes and backslashes, newlines, etc.
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            return strtr($string, array('\\'=>'\\\\',"'"=>"\\'",'"'=>'\\"',"\r"=>'\\r',"\n"=>'\\n','</'=>'<\/'));
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        case 'mail':
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            // safe way to display e-mail address on a web page
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            return str_replace(array('@', '.'),array(' [AT] ', ' [DOT] '), $string);
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        case 'nonstd':
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           // escape non-standard chars, such as ms document quotes
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           $_res = '';
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           for($_i = 0, $_len = strlen($string); $_i < $_len; $_i++) {
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               $_ord = ord(substr($string, $_i, 1));
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               // non-standard char, escape it
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               if($_ord >= 126){
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                   $_res .= '&#' . $_ord . ';';
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               }
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               else {
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                   $_res .= substr($string, $_i, 1);
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               }
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           }
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           return $_res;
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        default:
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            return $string;
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    }
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}
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/* vim: set expandtab: */
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?>