* Purpose: format HTML tags for the image
* Input: name = name of image (required)
* border = border width (optional, default 0)
* height = image height (optional, default actual height)
* image =image width (optional, default actual width)
* basedir= base directory for absolute paths, default
* is environment variable DOCUMENT_ROOT
*
* Examples: {image name="images/masthead.gif"}
* Output: 
* -------------------------------------------------------------
*/
function smarty_function_html_image($params, &$smarty)
{
$name = '';
$border = 0;
$height = null;
$width = null;
$basedir = isset($GLOBALS['HTTP_SERVER_VARS']['DOCUMENT_ROOT'])
? $GLOBALS['HTTP_SERVER_VARS']['DOCUMENT_ROOT'] : null;
extract($params);
if (empty($name)) {
$smarty->trigger_error("html_image: missing 'name' parameter", E_USER_ERROR);
}
if(substr($name,0,1) == DIR_SEP) {
$_image_path = $basedir . DIR_SEP . $name;
} else {
$_image_path = $name;
}
if(!file_exists($_image_path)) {
$smarty->trigger_error("html_image: unable to find '$_image_path'", E_USER_ERROR);
}
if(!is_readable($_image_path)) {
$smarty->trigger_error("html_image: unable to read '$_image_path'", E_USER_ERROR);
}
if(!$_image_data = getimagesize($_image_path)) {
$smarty->trigger_error("html_image: '$_image_path' is not a valid image file", E_USER_ERROR);
}
return "![](\"$name\")
';
}
/* vim: set expandtab: */
?>