/**
* Constructor
*
* @param string $dir Root directory to .scss files
* @param string $cacheDir Cache directory
* @param \Leafo\ScssPhp\Compiler|null $scss SCSS compiler instance
*/
public function __construct($dir, $cacheDir = null, $scss = null)
{
$this->dir = $dir;
if (!isset($cacheDir)) {
$cacheDir = $this->join($dir, 'scss_cache');
}
$this->cacheDir = $cacheDir;
if (!is_dir($this->cacheDir)) {
mkdir($this->cacheDir, 0755, true);
}
if (!isset($scss)) {
$scss = new Leafo_ScssPhp_Compiler();
$scss->setImportPaths($this->dir);
}
$this->scss = $scss;
$this->showErrorsAsCSS = false;
}
/**
* Hook into wp_enqueue_style to compile stylesheets
*/
public function style_loader_src($src, $handle)
{
// Quick check for SCSS files
if (strpos($src, 'scss') === false) {
return $src;
}
$url = parse_url($src);
$pathinfo = pathinfo($url['path']);
// Detailed check for SCSS files
if ($pathinfo['extension'] !== 'scss') {
return $src;
}
// Convert site URLs to absolute paths
$in = preg_replace('/^' . preg_quote(site_url(), '/') . '/i', '', $src);
// Ignore SCSS from CDNs, other domains and relative paths
if (preg_match('#^//#', $in) || strpos($in, '/') !== 0) {
return $src;
}
// Create a complete path
$in = rtrim($_SERVER['DOCUMENT_ROOT'], '/') . $url['path'];
// Check and make sure the file exists
if (file_exists($in) === false) {
array_push($this->errors, array('file' => basename($in), 'message' => 'Source file not found.'));
return $src;
}
// Generate unique filename for output
$outName = sha1($src) . '.css';
$wp_upload_dir = wp_upload_dir();
$outputDir = $wp_upload_dir['basedir'] . '/sassify/';
$outputUrl = $wp_upload_dir['baseurl'] . '/sassify/' . $outName;
// Create the output directory if it doesn't exisit
if (is_dir($outputDir) === false) {
if (wp_mkdir_p($outputDir) === false) {
array_push($this->errors, array('file' => 'Cache Directory', 'message' => 'File Permissions Error, unable to create cache directory. Please make sure the Wordpress Uploads directory is writable.'));
return $src;
}
}
// Check that the output directory is writable
if (is_writable($outputDir) === false) {
array_push($this->errors, array('file' => 'Cache Directory', 'message' => 'File Permissions Error, permission denied. Please make the cache directory writable.'));
return $src;
}
// Full output path
$out = $outputDir . '/' . $outName;
// Flag if a compile is required
$compileRequired = $this->admin->get_setting('always_compile', false);
// Retrieve cached filemtimes
if (($filemtimes = get_transient('sassify_filemtimes')) === false) {
$filemtimes = array();
}
// Check if compile is required based on file modification times
if ($compileRequired === false) {
if (isset($filemtimes[$out]) === false || $filemtimes[$out] < filemtime($in)) {
$compileRequired = true;
}
}
// Retrieve variables
$variables = apply_filters('sassify_compiler_variables', array('template_directory_uri' => get_template_directory_uri(), 'stylesheet_directory_uri' => get_stylesheet_directory_uri()));
// If variables have been updated then recompile
if ($compileRequired === false) {
$signature = sha1(serialize($variables));
if ($signature !== get_transient('sassify_variables_signature')) {
$compileRequired = true;
set_transient('sassify_variables_signature', $signature);
}
}
// Check if the stylesheet needs to be recompiled
if ($compileRequired) {
$compiler = new Leafo_ScssPhp_Compiler();
$compiler->setFormatter($this->admin->get_setting('compiling_mode', 'Leafo_ScssPhp_Formatter_Expanded'));
$compiler->setVariables($variables);
$compiler->setImportPaths(dirname($in));
try {
// Compile the SCSS to CSS
$css = $compiler->compile(file_get_contents($in));
} catch (Exception $e) {
array_push($this->errors, array('file' => basename($in), 'message' => $e->getMessage()));
return $src;
}
// Transform relative paths so they still work correctly
$css = preg_replace('#(url\\((?![\'"]?(?:https?:|/))[\'"]?)#miu', '$1' . dirname($url['path']) . '/', $css);
// Save the CSS
file_put_contents($out, $css);
// Cache the filemtime for the destination file
$filemtimes[$out] = filemtime($out);
set_transient('sassify_filemtimes', $filemtimes);
}
// Build URL with query string
return empty($url['query']) ? $outputUrl : $outputUrl . '?' . $url['query'];
}
