<?php
/**
* Smarty plugin
*
* @package Smarty
* @subpackage PluginsFunction
*/
/**
* Smarty {mailto} function plugin
* Type: function<br>
* Name: mailto<br>
* Date: May 21, 2002
* Purpose: automate mailto address link creation, and optionally encode them.<br>
* Params:
* <pre>
* - address - (required) - 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 hexadecimal (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
* </pre>
* Examples:
* <pre>
* {mailto address="[email protected]"}
* {mailto address="[email protected]" encode="javascript"}
* {mailto address="[email protected]" encode="hex"}
* {mailto address="[email protected]" subject="Hello to you!"}
* {mailto address="[email protected]" cc="[email protected],[email protected]"}
* {mailto address="[email protected]" extra='class="mailto"'}
* </pre>
*
* @link http://www.smarty.net/manual/en/language.function.mailto.php {mailto}
* (Smarty online manual)
* @version 1.2
* @author Monte Ohrt <monte at ohrt dot com>
* @author credits to Jason Sweat (added cc, bcc and subject functionality)
*
* @param array $params parameters
*
* @return string
*/
function smarty_function_mailto($params)
{
static $_allowed_encoding =
array('javascript' => true, 'javascript_charcode' => true, 'hex' => true, 'none' => true);
$extra = '';
if (empty($params[ 'address' ])) {
trigger_error("mailto: missing 'address' parameter", E_USER_WARNING);
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 = $value;
default:
}
}
if ($mail_parms) {
$address .= '?' . join('&', $mail_parms);
}
$encode = (empty($params[ 'encode' ])) ? 'none' : $params[ 'encode' ];
if (!isset($_allowed_encoding[ $encode ])) {
trigger_error("mailto: 'encode' parameter must be none, javascript, javascript_charcode or hex",
E_USER_WARNING);
return;
}
// FIXME: (rodneyrehm) document.write() excues me what? 1998 has passed!
if ($encode == 'javascript') {
$string = 'document.write(\'<a href="mailto:' . $address . '" ' . $extra . '>' . $text . '</a>\');';
$js_encode = '';
for ($x = 0, $_length = strlen($string); $x < $_length; $x ++) {
$js_encode .= '%' . bin2hex($string[ $x ]);
}
return '<script type="text/javascript">eval(unescape(\'' . $js_encode . '\'))</script>';
} elseif ($encode == 'javascript_charcode') {
$string = '<a href="mailto:' . $address . '" ' . $extra . '>' . $text . '</a>';
for ($x = 0, $y = strlen($string); $x < $y; $x ++) {
$ord[] = ord($string[ $x ]);
}
$_ret = "<script type=\"text/javascript\" language=\"javascript\">\n" . "{document.write(String.fromCharCode(" .
implode(',', $ord) . "))" . "}\n" . "</script>\n";
return $_ret;
} elseif ($encode == 'hex') {
preg_match('!^(.*)(\?.*)$!', $address, $match);
if (!empty($match[ 2 ])) {
trigger_error("mailto: hex encoding does not work with extra attributes. Try javascript.", E_USER_WARNING);
return;
}
$address_encode = '';
for ($x = 0, $_length = strlen($address); $x < $_length; $x ++) {
if (preg_match('!\w!' . Smarty::$_UTF8_MODIFIER, $address[ $x ])) {
$address_encode .= '%' . bin2hex($address[ $x ]);
} else {
$address_encode .= $address[ $x ];
}
}
$text_encode = '';
for ($x = 0, $_length = strlen($text); $x < $_length; $x ++) {
$text_encode .= '&#x' . bin2hex($text[ $x ]) . ';';
}
$mailto = "mailto:";
return '<a href="' . $mailto . $address_encode . '" ' . $extra . '>' . $text_encode . '</a>';
} else {
// no encoding
return '<a href="mailto:' . $address . '" ' . $extra . '>' . $text . '</a>';
}
}
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