/**
* @param string $path file path of less file to compile
* @param string $topath file path of output css file
* @return bool|mixed compile result or the css compiled content
*/
public static function compileCss($path, $topath = '')
{
//check system
self::requirement();
$parser = new Less_Parser();
$app = JFactory::getApplication();
$tpl = T3_TEMPLATE;
$theme = $app->getUserState('vars_theme');
$tofile = null;
$todir = null;
//pattern
$rcomment = '@/\\*[^*]*\\*+([^/][^*]*\\*+)*/@';
$rspace = '@[\\r?\\n]{2,}@';
$rimport = '@^\\s*\\@import\\s+"([^"]*)"\\s*;@im';
$rvarscheck = '@(base|base-bs3|bootstrap|' . preg_quote($tpl) . ')/less/(vars|variables|mixins)\\.less@';
$rexcludepath = '@(base|base-bs3|bootstrap|' . preg_quote($tpl) . ')/less/@';
$rimportvars = '@^\\s*\\@import\\s+".*(variables-custom|variables|vars|mixins)\\.less"\\s*;@im';
$rsplitbegin = '@^\\s*\\#';
$rsplitend = '[^\\s]*?\\s*{\\s*[\\r\\n]*\\s*content:\\s*"([^"]*)";\\s*[\\r\\n]*\\s*}@im';
$rswitchrtl = '@/less/(themes/[^/]*/)?@';
$kvarsep = 'less-content-separator';
$krtlsep = 'rtl-less-content';
if ($topath) {
$tofile = JPATH_ROOT . '/' . $topath;
$todir = dirname($topath);
if (!is_dir(dirname($tofile))) {
JFolder::create(dirname($tofile));
}
}
// check path
$realpath = realpath(JPATH_ROOT . '/' . $path);
if (!is_file($realpath)) {
return;
}
// get file content
$content = JFile::read($realpath);
//remove vars.less
if (preg_match($rexcludepath, $path)) {
$content = preg_replace($rimportvars, '', $content);
}
// remove comments? - we should keep comment for rtl flip
//$content = preg_replace($rcomment, '', $content);
// split into array, separated by the import
$arr = preg_split($rimport, $content, -1, PREG_SPLIT_DELIM_CAPTURE);
// check and add theme less if not is theme less
if ($theme && strpos($path, 'themes/') === false) {
$themepath = 'themes/' . $theme . '/' . basename($path);
if (is_file(T3_TEMPLATE_PATH . '/less/' . $themepath)) {
$arr[] = $themepath;
$arr[] = '';
}
}
// variables & mixin
$vars = self::getVars();
$output = '';
$importdirs = array();
// compile chunk
$import = false;
foreach ($arr as $s) {
if ($import) {
$import = false;
$url = T3Path::cleanPath(dirname($path) . '/' . $s);
// ignore vars.less and variables.less if they are in template folder
// cause there may have other css less file with the same name (eg. font awesome)
if (preg_match($rvarscheck, $url)) {
continue;
}
// remember this path when lookup for import
$importdirs[dirname(JPATH_ROOT . '/' . $url)] = self::relativePath($todir, dirname($url));
$output .= "\n@import \"{$s}\";\n\n";
// check and add theme less
if ($theme && strpos($url, 'themes/') === false) {
$theme_rel = 'themes/' . $theme . '/' . basename($url);
$theme_path = T3_TEMPLATE_PATH . '/less/' . $theme_rel;
if (is_file($theme_path)) {
$importdirs[dirname($theme_path)] = self::relativePath($todir, 'templates/' . $tpl . '/less/themes/' . $theme . '/');
$output .= "\n@import \"{$theme_rel}\";\n\n";
}
}
} else {
$import = true;
$s = trim($s);
if ($s) {
$output .= "\n{$s}\n\n";
}
}
}
$rtlcontent = '';
$is_rtl = $app->getUserState('DIRECTION') == 'rtl' && strpos($path, 'rtl/') === false;
// convert to RTL if using RTL
if ($is_rtl) {
// import rtl override
// check override for import
$import = false;
foreach ($arr as $s) {
if ($import) {
$import = false;
$url = T3Path::cleanPath(dirname($path) . '/' . $s);
// ignore vars.less and variables.less if they are in template folder
// cause there may have other css less file with the same name (eg. font awesome)
if (preg_match($rvarscheck, $url)) {
continue;
}
// process import file
$rtl_url = preg_replace('@/less/(themes/)?@', '/less/rtl/', $url);
if (!is_file(JPATH_ROOT . '/' . $rtl_url)) {
continue;
}
// process import file
$importcontent = JFile::read(JPATH_ROOT . '/' . $rtl_url);
if (preg_match($rexcludepath, $rtl_url)) {
$importcontent = preg_replace($rimportvars, '', $importcontent);
}
// remember this path when lookup for import
if (preg_match($rimport, $importcontent)) {
$importdirs[dirname(JPATH_ROOT . '/' . $rtl_url)] = self::relativePath($todir, dirname($rtl_url));
}
$rtlcontent .= "\n{$importcontent}\n\n";
// rtl theme overwrite
if ($theme && strpos($url, 'themes/') === false) {
$rtlthemepath = preg_replace($rswitchrtl, '/less/rtl/' . $theme . '/', $url);
if (is_file(JPATH_ROOT . '/' . $rtlthemepath)) {
// process import file
$importcontent = JFile::read(JPATH_ROOT . '/' . $rtlthemepath);
$rtlcontent .= "\n{$importcontent}\n\n";
$importdirs[dirname(JPATH_ROOT . '/' . $rtlthemepath)] = self::relativePath($todir, dirname($rtlthemepath));
}
}
} else {
$import = true;
}
}
// override in template for this file
$rtlpath = preg_replace($rswitchrtl, '/less/rtl/', $path);
if (is_file(JPATH_ROOT . '/' . $rtlpath)) {
// process import file
$importcontent = JFile::read(JPATH_ROOT . '/' . $rtlpath);
$rtlcontent .= "\n{$importcontent}\n\n";
$importdirs[dirname(JPATH_ROOT . '/' . $rtlpath)] = self::relativePath($todir, dirname($rtlpath));
}
// rtl theme
if ($theme) {
$rtlthemepath = preg_replace($rswitchrtl, '/less/rtl/' . $theme . '/', $path);
if (is_file(JPATH_ROOT . '/' . $rtlthemepath)) {
// process import file
$importcontent = JFile::read(JPATH_ROOT . '/' . $rtlthemepath);
$rtlcontent .= "\n{$importcontent}\n\n";
$importdirs[dirname(JPATH_ROOT . '/' . $rtlthemepath)] = self::relativePath($todir, dirname($rtlthemepath));
}
}
if ($rtlcontent) {
$output = $output . "\n#{$krtlsep}{content: \"separator\";}\n\n{$rtlcontent}\n\n";
}
}
// common place
$importdirs[T3_TEMPLATE_PATH . '/less'] = self::relativePath($todir, T3_TEMPLATE_URL);
// myself
$importdirs[dirname(JPATH_ROOT . '/' . $path)] = self::relativePath($todir, dirname($path));
// ignore all these files
foreach (array(T3_PATH, T3_PATH . '/bootstrap', T3_TEMPLATE_PATH) as $know_path) {
foreach (array('vars', 'variables', 'mixins') as $know_file) {
$realfile = realpath($know_path . '/less/' . $know_file . '.less');
if (is_file($realfile) && !Less_Parser::FileParsed($realfile)) {
Less_Parser::AddParsedFile($realfile);
}
}
}
// compile less to css using lessphp
$parser->SetImportDirs($importdirs);
$parser->SetFileInfo(JPATH_ROOT . '/' . $path, self::relativePath($todir, dirname($path)));
$source = $vars . "\n#{$kvarsep}{content: \"separator\";}\n" . $output;
$parser->parse($source);
$output = $parser->getCss();
// remove the duplicate clearfix at the beginning if not bootstrap.css file
if (strpos($path, $tpl . '/less/bootstrap.less') === false) {
$arr = preg_split($rsplitbegin . $kvarsep . $rsplitend, $output);
// ignore first one, it's clearfix
if (is_array($arr)) {
array_shift($arr);
}
$output = implode("\n", $arr);
} else {
$output = preg_replace($rsplitbegin . $kvarsep . $rsplitend, '', $output);
}
//update url if needed
if (defined('T3_DEV_MODE') && T3_DEV_MODE) {
$output = T3Path::updateUrl($output, $topath ? T3Path::relativePath(dirname($topath), dirname($path)) : T3_TEMPLATE_URL . '/css/');
}
if ($is_rtl) {
if ($rtlcontent) {
$output = preg_split($rsplitbegin . $krtlsep . $rsplitend, $output, -1, PREG_SPLIT_DELIM_CAPTURE);
$rtlcontent = isset($output[2]) ? $output[2] : false;
$output = $output[0];
}
T3::import('jacssjanus/ja.cssjanus');
$output = JACSSJanus::transform($output, true);
//join again
if ($rtlcontent) {
$output = $output . "\n" . $rtlcontent;
}
}
//remove comments and clean up
$output = preg_replace($rcomment, '', $output);
$output = preg_replace($rspace, "\n\n", $output);
if ($tofile) {
$ret = JFile::write($tofile, $output);
@chmod($tofile, 0644);
return $ret;
}
return $output;
}
/**
* Should the import be skipped?
*
* @return boolean|null
*/
private function Skip($path, $env)
{
$path = Less_Parser::winPath(realpath($path));
if ($path && Less_Parser::FileParsed($path)) {
if (isset($this->currentFileInfo['reference'])) {
return true;
}
return !isset($this->options['multiple']) && !$env->importMultiple;
}
}
function compile($env)
{
$evald = $this->compileForImport($env);
$uri = $full_path = false;
//get path & uri
$evald_path = $evald->getPath();
if ($evald_path && $env->isPathRelative($evald_path)) {
foreach (Less_Parser::$import_dirs as $rootpath => $rooturi) {
$temp = $rootpath . $evald_path;
if (file_exists($temp)) {
$full_path = Less_Environment::NormPath($temp);
$uri = Less_Environment::NormPath(dirname($rooturi . $evald_path));
break;
}
}
}
if (!$full_path) {
$uri = $evald_path;
$full_path = $evald_path;
}
//import once
$realpath = realpath($full_path);
if (!isset($evald->options['multiple']) && $realpath && Less_Parser::FileParsed($realpath)) {
$evald->skip = true;
}
$features = $evald->features ? $evald->features->compile($env) : null;
if ($evald->skip) {
return array();
}
if ($evald->css) {
$temp = $this->compilePath($env);
return new Less_Tree_Import($this->compilePath($env), $features, $this->options, $this->index);
}
$parser = new Less_Parser($env);
$evald->root = $parser->parseFile($full_path, $uri, true);
$ruleset = new Less_Tree_Ruleset(array(), $evald->root->rules);
$ruleset->evalImports($env);
return $this->features ? new Less_Tree_Media($ruleset->rules, $this->features->value) : $ruleset->rules;
}