library/plugins/function.mailto.php

   1 <?php
   2 /**
   3  * Smarty plugin
   4  * @package Smarty
   5  * @subpackage plugins
   6  */
   7
   8
   9 /**
  10  * Smarty {mailto} function plugin
  11  *
  12  * Type:     function<br>
  13  * Name:     mailto<br>
  14  * Date:     May 21, 2002
  15  * Purpose:  automate mailto address link creation, and optionally
  16  *           encode them.<br>
  17  * Input:<br>
  18  *         - address = e-mail address
  19  *         - text = (optional) text to display, default is address
  20  *         - encode = (optional) can be one of:
  21  *                * none : no encoding (default)
  22  *                * javascript : encode with javascript
  23  *                * hex : encode with hexidecimal (no javascript)
  24  *         - cc = (optional) address(es) to carbon copy
  25  *         - bcc = (optional) address(es) to blind carbon copy
  26  *         - subject = (optional) e-mail subject
  27  *         - newsgroups = (optional) newsgroup(s) to post to
  28  *         - followupto = (optional) address(es) to follow up to
  29  *         - extra = (optional) extra tags for the href link
  30  *
  31  * Examples:
  32  * <pre>
  33  * {mailto address="me@domain.com"}
  34  * {mailto address="me@domain.com" encode="javascript"}
  35  * {mailto address="me@domain.com" encode="hex"}
  36  * {mailto address="me@domain.com" subject="Hello to you!"}
  37  * {mailto address="me@domain.com" cc="you@domain.com,they@domain.com"}
  38  * {mailto address="me@domain.com" extra='class="mailto"'}
  39  * </pre>
  40  * @link http://smarty.php.net/manual/en/language.function.mailto.php {mailto}
  41  *          (Smarty online manual)
  42  * @version  1.2
  43  * @author   Monte Ohrt <monte@ispi.net>
  44  * @author   credits to Jason Sweat (added cc, bcc and subject functionality)
  45  * @param    array
  46  * @param    Smarty
  47  * @return   string
  48  */
  49 function smarty_function_mailto($params, &$smarty)
  50 {
  51     $extra = '';
  52
  53     if (empty($params['address'])) {
  54         $smarty->trigger_error("mailto: missing 'address' parameter");
  55         return;
  56     } else {
  57         $address = $params['address'];
  58     }
  59
  60     $text = $address;
  61
  62     // netscape and mozilla do not decode %40 (@) in BCC field (bug?)
  63     // so, don't encode it.
  64     $mail_parms = array();
  65     foreach ($params as $var=>$value) {
  66         switch ($var) {
  67             case 'cc':
  68             case 'bcc':
  69             case 'followupto':
  70                 if (!empty($value))
  71                     $mail_parms[] = $var.'='.str_replace('%40','@',rawurlencode($value));
  72                 break;
  73
  74             case 'subject':
  75             case 'newsgroups':
  76                 $mail_parms[] = $var.'='.rawurlencode($value);
  77                 break;
  78
  79             case 'extra':
  80             case 'text':
  81                 $$var = $value;
  82
  83             default:
  84         }
  85     }
  86
  87     $mail_parm_vals = '';
  88     for ($i=0; $i<count($mail_parms); $i++) {
  89         $mail_parm_vals .= (0==$i) ? '?' : '&';
  90         $mail_parm_vals .= $mail_parms[$i];
  91     }
  92     $address .= $mail_parm_vals;
  93
  94     $encode = (empty($params['encode'])) ? 'none' : $params['encode'];
  95     if (!in_array($encode,array('javascript','hex','none')) ) {
  96         $smarty->trigger_error("mailto: 'encode' parameter must be none, javascript or hex");
  97         return;
  98     }
  99
 100     if ($encode == 'javascript' ) {
 101         $string = 'document.write(\'<a href="mailto:'.$address.'" '.$extra.'>'.$text.'</a>\');';
 102
 103         $js_encode = '';
 104         for ($x=0; $x < strlen($string); $x++) {
 105             $js_encode .= '%' . bin2hex($string[$x]);
 106         }
 107
 108         return '<script type="text/javascript" language="javascript">eval(unescape(\''.$js_encode.'\'))</script>';
 109
 110     } elseif ($encode == 'hex') {
 111
 112         preg_match('!^(.*)(\?.*)$!',$address,$match);
 113         if(!empty($match[2])) {
 114             $smarty->trigger_error("mailto: hex encoding does not work with extra attributes. Try javascript.");
 115             return;
 116         }
 117         for ($x=0; $x < strlen($address); $x++) {
 118             if(preg_match('!\w!',$address[$x])) {
 119                 $address_encode .= '%' . bin2hex($address[$x]);
 120             } else {
 121                 $address_encode .= $address[$x];
 122             }
 123         }
 124         for ($x=0; $x < strlen($text); $x++) {
 125             $text_encode .= '&#x' . bin2hex($text[$x]).';';
 126         }
 127
 128         return '<a href="mailto:'.$address_encode.'" '.$extra.'>'.$text_encode.'</a>';
 129
 130     } else {
 131         // no encoding
 132         return '<a href="mailto:'.$address.'" '.$extra.'>'.$text.'</a>';
 133
 134     }
 135
 136 }
 137
 138 /* vim: set expandtab: */
 139
 140 ?>