public static function generate_transformation_string(&$options = array())
{
$generate_base_transformation = "Cloudinary::generate_base_transformation";
if (is_string($options)) {
return $options;
}
if ($options == array_values($options)) {
return implode("/", array_map($generate_base_transformation, $options));
}
$responsive_width = Cloudinary::option_consume($options, "responsive_width", Cloudinary::config_get("responsive_width"));
$size = Cloudinary::option_consume($options, "size");
if ($size) {
list($options["width"], $options["height"]) = preg_split("/x/", $size);
}
$width = Cloudinary::option_get($options, "width");
$height = Cloudinary::option_get($options, "height");
$has_layer = Cloudinary::option_get($options, "underlay") || Cloudinary::option_get($options, "overlay");
$angle = implode(Cloudinary::build_array(Cloudinary::option_consume($options, "angle")), ".");
$crop = Cloudinary::option_consume($options, "crop");
$no_html_sizes = $has_layer || !empty($angle) || $crop == "fit" || $crop == "limit" || $responsive_width;
if (strlen($width) == 0 || $width && ($width == "auto" || floatval($width) < 1 || $no_html_sizes)) {
unset($options["width"]);
}
if (strlen($height) == 0 || $height && (floatval($height) < 1 || $no_html_sizes)) {
unset($options["height"]);
}
$background = Cloudinary::option_consume($options, "background");
if ($background) {
$background = preg_replace("/^#/", 'rgb:', $background);
}
$color = Cloudinary::option_consume($options, "color");
if ($color) {
$color = preg_replace("/^#/", 'rgb:', $color);
}
$base_transformations = Cloudinary::build_array(Cloudinary::option_consume($options, "transformation"));
if (count(array_filter($base_transformations, "is_array")) > 0) {
$base_transformations = array_map($generate_base_transformation, $base_transformations);
$named_transformation = "";
} else {
$named_transformation = implode(".", $base_transformations);
$base_transformations = array();
}
$effect = Cloudinary::option_consume($options, "effect");
if (is_array($effect)) {
$effect = implode(":", $effect);
}
$border = Cloudinary::process_border(Cloudinary::option_consume($options, "border"));
$flags = implode(Cloudinary::build_array(Cloudinary::option_consume($options, "flags")), ".");
$dpr = Cloudinary::option_consume($options, "dpr", Cloudinary::config_get("dpr"));
$duration = Cloudinary::norm_range_value(Cloudinary::option_consume($options, "duration"));
$start_offset = Cloudinary::norm_range_value(Cloudinary::option_consume($options, "start_offset"));
$end_offset = Cloudinary::norm_range_value(Cloudinary::option_consume($options, "end_offset"));
$offset = Cloudinary::split_range(Cloudinary::option_consume($options, "offset"));
if (!empty($offset)) {
$start_offset = Cloudinary::norm_range_value($offset[0]);
$end_offset = Cloudinary::norm_range_value($offset[1]);
}
$video_codec = Cloudinary::process_video_codec_param(Cloudinary::option_consume($options, "video_codec"));
$overlay = Cloudinary::process_layer(Cloudinary::option_consume($options, "overlay"), "overlay");
$underlay = Cloudinary::process_layer(Cloudinary::option_consume($options, "underlay"), "underlay");
$if = Cloudinary::process_if(Cloudinary::option_consume($options, "if"));
$params = array("a" => $angle, "b" => $background, "bo" => $border, "c" => $crop, "co" => $color, "dpr" => $dpr, "du" => $duration, "e" => $effect, "eo" => $end_offset, "fl" => $flags, "h" => $height, "l" => $overlay, "so" => $start_offset, "t" => $named_transformation, "u" => $underlay, "vc" => $video_codec, "w" => $width);
$simple_params = array("ac" => "audio_codec", "af" => "audio_frequency", "ar" => "aspect_ratio", "br" => "bit_rate", "cs" => "color_space", "d" => "default_image", "dl" => "delay", "dn" => "density", "f" => "fetch_format", "g" => "gravity", "o" => "opacity", "p" => "prefix", "pg" => "page", "q" => "quality", "r" => "radius", "vs" => "video_sampling", "x" => "x", "y" => "y", "z" => "zoom");
foreach ($simple_params as $param => $option) {
$params[$param] = Cloudinary::option_consume($options, $option);
}
$param_filter = function ($value) {
return $value === 0 || $value === '0' || trim($value) == true;
};
$params = array_filter($params, $param_filter);
ksort($params);
if (isset($if)) {
$params = array_merge(array("if" => $if), $params);
}
$join_pair = function ($key, $value) {
return $key . "_" . $value;
};
$transformation = implode(",", array_map($join_pair, array_keys($params), array_values($params)));
$raw_transformation = Cloudinary::option_consume($options, "raw_transformation");
$transformation = implode(",", array_filter(array($transformation, $raw_transformation)));
array_push($base_transformations, $transformation);
if ($responsive_width) {
$responsive_width_transformation = Cloudinary::config_get("responsive_width_transformation", Cloudinary::$DEFAULT_RESPONSIVE_WIDTH_TRANSFORMATION);
array_push($base_transformations, Cloudinary::generate_transformation_string($responsive_width_transformation));
}
if ($width == "auto" || $responsive_width) {
$options["responsive"] = true;
}
if ($dpr == "auto") {
$options["hidpi"] = true;
}
return implode("/", array_filter($base_transformations));
}
