/**
* @param $path path to non-web-image file
* @param $format the format to convert to
* @param $timeout seconds to wait to for conversion default 20
*
* @return the path of the converted file, or false if conversion fails
*/
function convert_to_web_image($path, $format, $timeout = 20)
{
$sharpen = true;
$new_path = change_extension($path, $format);
$args = array('convert', '-flatten');
if ($sharpen) {
$args = array_merge($args, array('-sharpen', '1'));
}
$args[] = escapeshellarg($path);
$args[] = escapeshellarg($new_path);
$output = array();
$command = implode(' ', $args);
$exit_status = -1;
exec_with_timeout($command, $timeout, $output);
if (file_exists($new_path)) {
return $new_path;
} else {
// We know some psds don't work -- don't actually report these errors
if (get_extension($path) != 'psd') {
trigger_error('convert_to_web_image failed: Attempted this: "' . $command . '"');
}
return false;
}
}
/*
If uploading an image, but provide a non-web-friendly type (i.e. pdf), convert it and
update all of its corresponding paths. Note 1=>'gif',2=>'jpg',3=>'png'
*/
$web_acceptable_types = array(1,2,3);
if( (!$img_info || !in_array($file_type, $web_acceptable_types) )
&& (!empty($constraints['convert_to_image'])) && $constraints['convert_to_image'] )
{
// from image_funcs
$convert_to = 'png';
if( $temp_path = convert_to_image($temp_path, $convert_to) )
{
$img_info = @getimagesize($temp_path);
$temp_uri = change_extension( $temp_uri, $convert_to );
$filename = change_extension( $filename, $convert_to );
$filesize = filesize($temp_path);
}
else
{
final_response(501, 'Unable to convert the uploaded file to a web-friendly image');
}
}
if ($img_info)
{
// fix a permission idiosyncrasy so the permissions are consistent
@copy($temp_path, $temp_path.".tmp");
@rename($temp_path.".tmp", $temp_path);
list($orig_width, $orig_height) = $img_info;
list($width, $height) = $img_info;