/**
* Creates a stylesheet link with LESS support
*
* @param string $style file name
* @param array $attributes default attributes
* @param bool $index include the index page
* @param array $imports compare file date for these too, CSS and LESS in style @import
* @return string
*/
public static function style($file, array $attributes = null, $index = false, $imports = null)
{
$imports = (array) $imports;
// Compile only .less files
if (substr_compare($file, '.less', -5, 5, false) === 0) {
$css = substr_replace($file, 'css', -4);
$compiled = is_file($css) ? filemtime($css) : 0;
try {
// Check if imported files have changed
$compile = filemtime($file) > $compiled;
if (!$compile && !empty($imports)) {
foreach ($imports as $import) {
if (filemtime($import) > $compiled) {
$compile = true;
break;
}
}
}
// Compile LESS
if ($compile) {
$compiler = new Less($file);
file_put_contents($css, $compiler->parse());
}
$file = $css;
} catch (Exception $e) {
Kohana::$log->add(Log::ERROR, __METHOD__ . ': Error compiling LESS file ' . $file . ', ' . $e->getMessage());
}
}
return HTML::style($file . '?' . filemtime($file), $attributes, $index);
}
/**
* [assets description]
* @param Array $assets
* @return String js or css
*/
public function compile($assets, $type)
{
$self = $this;
$rewriteCssUrls = function ($content, $asset) use($self) {
$source_dir = dirname($asset["file"]);
$root_dir = $self->app['docs_root'];
$csspath = "";
if (strlen($root_dir) < strlen($source_dir)) {
$csspath = '/' . trim(str_replace($root_dir, '', $source_dir), "/") . "/";
} else {
// todo
}
$offset = 0;
while (($pos = strpos($content, 'url(', $offset)) !== false) {
if (($urlend = strpos($content, ')', $pos)) !== false) {
$path = trim(str_replace(array('"', "'"), "", substr($content, $pos + 4, $urlend - ($pos + 4))));
if (!preg_match("#^(http|/|data\\:)#", trim($path))) {
$content = str_replace($path, $csspath . $path, $content);
}
}
$offset = $pos + 1;
}
return $content;
};
$output = array();
foreach ((array) $assets as $file) {
$asset = array("ext" => pathinfo($file, PATHINFO_EXTENSION), "file" => $file);
$ext = $asset['ext'] == "scss" || $asset['ext'] == "less" ? "css" : $asset['ext'];
$content = '';
if (strpos($file, ':') !== false && ($____file = $this->app->path($file))) {
$asset['file'] = $file = $____file;
}
if ($ext != $type) {
continue;
}
switch ($asset['ext']) {
case 'js':
$content = @file_get_contents($file);
break;
case 'scss':
case 'less':
case 'css':
switch ($asset['ext']) {
case 'scss':
$content = \Sass::parse($file);
break;
case 'less':
$content = \Less::parse($file);
break;
default:
$content = @file_get_contents($file);
}
$content = $rewriteCssUrls($content, $asset);
break;
default:
continue;
}
$output[] = $content;
}
return implode("", $output);
}
