/**
* Convert an image to a given size and type using imagemagick (ensures input is an image)
*
* @param $p['in'] Input filename (mandatory)
* @param $p['out'] Output filename (mandatory)
* @param $p['size'] Width x height of resulting image, e.g. "160x60"
* @param $p['type'] Output file type, e.g. "jpg"
* @param $p['-opts'] Custom command line options to ImageMagick convert
* @return Success of convert as true/false
*/
public static function imageconvert($p)
{
$result = false;
$rcmail = rcmail::get_instance();
$convert = $rcmail->config->get('im_convert_path', false);
$identify = $rcmail->config->get('im_identify_path', false);
// imagemagick is required for this
if (!$convert) {
return false;
}
if (!(($imagetype = @exif_imagetype($p['in'])) && ($type = image_type_to_extension($imagetype, false)))) {
list(, $type) = explode(' ', strtolower(rcmail::exec($identify . ' 2>/dev/null {in}', $p)));
}
# for things like eps
$type = strtr($type, array("jpeg" => "jpg", "tiff" => "tif", "ps" => "eps", "ept" => "eps"));
$p += array('type' => $type, 'types' => "bmp,eps,gif,jp2,jpg,png,svg,tif", 'quality' => 75);
$p['-opts'] = array('-resize' => $p['size'] . '>') + (array) $p['-opts'];
if (in_array($type, explode(',', $p['types']))) {
# Valid type?
$result = rcmail::exec($convert . ' 2>&1 -flatten -auto-orient -colorspace RGB -quality {quality} {-opts} {in} {type}:{out}', $p) === "";
}
return $result;
}
/**
* Identify command handler.
*/
private function identify()
{
$rcmail = rcmail::get_instance();
if ($cmd = $rcmail->config->get('im_identify_path')) {
$args = array('in' => $this->image_file, 'format' => "%m %[fx:w] %[fx:h]");
$id = rcmail::exec($cmd . ' 2>/dev/null -format {format} {in}', $args);
if ($id) {
return explode(' ', strtolower($id));
}
}
}
