* Name: mailto
* Date: May 21, 2002
* Purpose: automate mailto address link creation, and optionally
* encode them.
* Input:
* - address = e-mail address
* - text = (optional) text to display, default is address
* - encode = (optional) can be one of:
* * none : no encoding (default)
* * javascript : encode with javascript
* * javascript_charcode : encode with javascript charcode
* * hex : encode with hexidecimal (no javascript)
* - cc = (optional) address(es) to carbon copy
* - bcc = (optional) address(es) to blind carbon copy
* - subject = (optional) e-mail subject
* - newsgroups = (optional) newsgroup(s) to post to
* - followupto = (optional) address(es) to follow up to
* - extra = (optional) extra tags for the href link
*
* Examples:
*
* {mailto address="me@domain.com"}
* {mailto address="me@domain.com" encode="javascript"}
* {mailto address="me@domain.com" encode="hex"}
* {mailto address="me@domain.com" subject="Hello to you!"}
* {mailto address="me@domain.com" cc="you@domain.com,they@domain.com"}
* {mailto address="me@domain.com" extra='class="mailto"'}
*
* @link http://smarty.php.net/manual/en/language.function.mailto.php {mailto}
* (Smarty online manual)
* @version 1.2
* @author Monte Ohrt
* @author credits to Jason Sweat (added cc, bcc and subject functionality)
* @param array
* @param Smarty
* @return string
*/
function smarty_function_mailto($params, &$smarty)
{
$extra = '';
if (empty($params['address'])) {
$smarty->trigger_error("mailto: missing 'address' parameter");
return;
} else {
$address = $params['address'];
}
$text = $address;
// netscape and mozilla do not decode %40 (@) in BCC field (bug?)
// so, don't encode it.
$search = array('%40', '%2C');
$replace = array('@', ',');
$mail_parms = array();
foreach ($params as $var=>$value) {
switch ($var) {
case 'cc':
case 'bcc':
case 'followupto':
if (!empty($value))
$mail_parms[] = $var.'='.str_replace($search,$replace,rawurlencode($value));
break;
case 'subject':
case 'newsgroups':
$mail_parms[] = $var.'='.rawurlencode($value);
break;
case 'extra':
case 'text':
$$var = $value;
default:
}
}
$mail_parm_vals = '';
$mail_parms_count = count($mail_parms);
for ($i=0; $i<$mail_parms_count; ++$i) {
$mail_parm_vals .= (0==$i) ? '?' : '&';
$mail_parm_vals .= $mail_parms[$i];
}
$address .= $mail_parm_vals;
$encode = (empty($params['encode'])) ? 'none' : $params['encode'];
if (!in_array($encode,array('javascript','javascript_charcode','hex','none')) ) {
$smarty->trigger_error("mailto: 'encode' parameter must be none, javascript or hex");
return;
}
if ($encode == 'javascript' ) {
$string = 'document.write(\''.$text.'\');';
$js_encode = '';
for ($x=0; $x < strlen($string); ++$x) {
$js_encode .= '%' . bin2hex($string[$x]);
}
return '';
} elseif ($encode == 'javascript_charcode' ) {
$string = ''.$text.'';
for($x = 0, $y = strlen($string); $x < $y; ++$x ) {
$ord[] = ord($string[$x]);
}
$_ret = "\n";
return $_ret;
} elseif ($encode == 'hex') {
preg_match('!^(.*)(\?.*)$!',$address,$match);
if(!empty($match[2])) {
$smarty->trigger_error("mailto: hex encoding does not work with extra attributes. Try javascript.");
return;
}
$address_encode = '';
for ($x=0; $x < strlen($address); ++$x) {
if(preg_match('!\w!',$address[$x])) {
$address_encode .= '%' . bin2hex($address[$x]);
} else {
$address_encode .= $address[$x];
}
}
$text_encode = '';
for ($x=0; $x < strlen($text); ++$x) {
$text_encode .= '&#x' . bin2hex($text[$x]).';';
}
$mailto = "mailto:";
return ''.$text_encode.'';
} else {
// no encoding
return ''.$text.'';
}
}
/* vim: set expandtab: */
?>