/**
* Parses embed() functions within the CSS.
* @access public
* @param $source
* @param $scaffold
* @return string
*/
public function process($source, $scaffold)
{
// We can only embed for file sources
if ($source->type != 'file') {
return;
}
foreach (Scaffold_Helper_CSS::find_functions('embed', $source->contents) as $found) {
// Get the full path to the file relative to the source
$path = $source->find($url);
// The file doesn't exist
if ($path === false) {
continue;
}
$id = 'embeds/' . md5($path);
$ext = pathinfo($path, PATHINFO_EXTENSION);
$mod_time = filemtime($path);
$mime = $this->_get_mime($ext);
// If it's a file we can actually use
if ($mime === false) {
continue;
}
// Try and load it from the cache
$data = $scaffold->cache->get($id);
// If the cached version has expired
if ($data === false or $mod_time > $data->last_modified) {
$data = base64_encode(file_get_contents($path));
$scaffold->cache->set($id, $data, $mod_time, false);
} else {
$data = $data->contents;
}
$string = "url(data:{$mime};base64,{$data})";
$source->contents = str_replace($found['string'], $string, $source->contents);
}
}
/**
* Extracts the mixin bases
* @param $source
* @return return type
*/
public function process($source)
{
print_r($source->get());
exit;
# Finds any selectors starting with =mixin-name
if ($found = Scaffold_Helper_CSS::find_selectors('\\@mixin\\s+([0-9a-zA-Z_]+) (\\((.*?)\\))?', $source->get(), false)) {
# Just to make life a little easier
$full_base = $found[0];
$base_names = $found['name'];
$base_args = $found['args'];
$base_props = $found['properties'];
# Puts the mixin bases into a more suitable array
foreach ($base_names as $key => $value) {
$bases[$value]['properties'] = $base_props[$key];
# If there are mixin arguments, add them
$bases[$value]['params'] = $base_args[$key] != "" ? explode(',', $base_args[$key]) : array();
}
# Store this away for debugging
$this->mixins = $bases;
# Remove all of the mixin bases
$source->set(str_replace($full_base, '', $source->get()));
}
print_r($this->mixins);
exit;
}
/**
* Removes the @constant rules from a CSS string
* @access public
* @param $css
* @return string
*/
public function remove_constant_rules($css)
{
$rules = Scaffold_Helper_CSS::find_atrule('constants', $css);
foreach ($rules as $rule) {
$css = str_replace($rule[0], '', $css);
}
return $css;
}
/**
* @access public
* @param $source
* @return string
*/
public function pre_process($source, $scaffold)
{
// Go through each custom function
foreach ($this->functions as $name => $function) {
$obj = $function[0];
$method = $function[1];
// Find them in the CSS
foreach (Scaffold_Helper_CSS::find_functions($name, $source->contents) as $found) {
// Call the hook method for this function
$result = call_user_func_array(array($obj, $method), $found['params']);
// Replace it in the CSS
$source->contents = str_replace($found['string'], $result, $source->contents);
}
}
}
/**
* @access public
* @param $source
* @return string
*/
public function pre_process($source)
{
// Go through each custom function
foreach ($this->properties as $name => $property) {
$obj = $property[0];
$method = $property[1];
// Find them in the CSS
foreach (Scaffold_Helper_CSS::find_properties($name, $source->contents) as $found) {
// Call the hook method for this function
$result = call_user_func_array(array($obj, $method), array($found['value']));
// Replace it in the CSS
$source->contents = str_replace($found['property'], $result, $source->contents);
}
}
}
public function testRemove_properties()
{
$string = 'id{background:blue}#id2{color:blue}#id3{background-color:red}#id4{dbackground:blue}#id5{color:red;background:blue}';
$expected = 'id{}#id2{color:blue}#id3{background-color:red}#id4{dbackground:blue}#id5{color:red;}';
$output = Scaffold_Helper_CSS::remove_properties('background', $string);
$this->assertEquals($expected, $output);
//
$string = 'id{background:blue}#id2{color:blue}#id3{background-color:red}#id4{dbackground:blue}#id5{color:red;background:blue}';
$expected = 'id{background:blue}#id2{color:blue}#id3{}#id4{dbackground:blue}#id5{color:red;background:blue}';
$output = Scaffold_Helper_CSS::remove_properties('background-color', $string);
$this->assertEquals($expected, $output);
}
/**
* Imports css via @import statements
* @param $rules mixed
* @param $css string
* @param $base Search for files relative to this file
* @return string
*/
public function replace_rules($rules, $css, $base)
{
$unique = array_unique($rules[1]);
$include = str_replace("\\", "/", $unique[0]);
# If they haven't supplied an extension, we'll assume its a css file
if (pathinfo($include, PATHINFO_EXTENSION) == "") {
$include .= '.css';
}
# The base is set, and it's relative
if ($include[0] != DIRECTORY_SEPARATOR) {
$path = dirname($base) . DIRECTORY_SEPARATOR . $include;
} elseif ($include[0] == DIRECTORY_SEPARATOR) {
$path = $_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR . $include;
}
if (!is_file($path)) {
// Error message
$title = "Missing File";
$message = "<code>{$include}</code> cannot be found or doesn't exist.<pre><code> " . $rules[0][0] . "</code></pre>";
$line = Scaffold_Helper_CSS::line_number($rules[0][0], $css);
// Throw the error
throw new Scaffold_Extension_Exception($title, $message, $base, $line);
}
# It's already been loaded
if ($this->is_loaded($path)) {
$css = str_replace($matches[0][0], '', $css);
}
$this->loaded[] = $path;
# Check the file for more imports
$contents = file_get_contents($path);
$contents = $this->find_and_replace($contents, $path);
# Replace the rule
$css = str_replace($rules[0][0], $contents, $css);
return $css;
}
