174 lines
3.8 KiB
PHP
174 lines
3.8 KiB
PHP
<?php
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/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
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namespace Icinga\Web;
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use Icinga\Application\Logger;
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use RecursiveArrayIterator;
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use RecursiveIteratorIterator;
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use lessc;
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/**
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* Compile LESS into CSS
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*
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* Comments will be removed always. lessc is messing them up.
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*/
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class LessCompiler
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{
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/**
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* lessphp compiler
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*
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* @var lessc
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*/
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protected $lessc;
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/**
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* Array of LESS files
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*
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* @var string[]
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*/
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protected $lessFiles = array();
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/**
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* Array of module LESS files indexed by module names
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*
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* @var array[]
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*/
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protected $moduleLessFiles = array();
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/**
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* LESS source
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*
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* @var string
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*/
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protected $source;
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/**
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* Path of the LESS theme
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*
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* @var string
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*/
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protected $theme;
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/**
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* Create a new LESS compiler
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*/
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public function __construct()
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{
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require_once 'lessphp/lessc.inc.php';
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$this->lessc = new lessc();
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// Discourage usage of import because we're caching based on an explicit list of LESS files to compile
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$this->lessc->importDisabled = true;
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}
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/**
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* Add a Web 2 LESS file
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*
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* @param string $lessFile Path to the LESS file
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*
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* @return $this
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*/
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public function addLessFile($lessFile)
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{
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$this->lessFiles[] = realpath($lessFile);
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return $this;
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}
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/**
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* Add a module LESS file
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*
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* @param string $moduleName Name of the module
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* @param string $lessFile Path to the LESS file
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*
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* @return $this
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*/
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public function addModuleLessFile($moduleName, $lessFile)
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{
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if (! isset($this->moduleLessFiles[$moduleName])) {
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$this->moduleLessFiles[$moduleName] = array();
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}
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$this->moduleLessFiles[$moduleName][] = realpath($lessFile);
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return $this;
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}
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/**
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* Get the list of LESS files added to the compiler
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*
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* @return string[]
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*/
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public function getLessFiles()
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{
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$lessFiles = $this->lessFiles;
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foreach ($this->moduleLessFiles as $moduleLessFiles) {
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$lessFiles = array_merge($lessFiles, $moduleLessFiles);
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}
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if ($this->theme !== null) {
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$lessFiles[] = $this->theme;
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}
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return $lessFiles;
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}
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/**
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* Set the path to the LESS theme
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*
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* @param string $theme Path to the LESS theme
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*
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* @return $this
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*/
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public function setTheme($theme)
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{
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if (is_file($theme) && is_readable($theme)) {
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$this->theme = $theme;
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} else {
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Logger::error('Can\t load theme %s. Make sure that the theme exists and is readable', $theme);
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}
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return $this;
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}
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/**
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* Instruct the compiler to minify CSS
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*
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* @return $this
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*/
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public function compress()
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{
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$this->lessc->setFormatter('compressed');
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return $this;
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}
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/**
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* Render to CSS
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*
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* @return string
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*/
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public function render()
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{
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foreach ($this->lessFiles as $lessFile) {
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$this->source .= file_get_contents($lessFile);
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}
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$moduleCss = '';
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foreach ($this->moduleLessFiles as $moduleName => $moduleLessFiles) {
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$moduleCss .= '.icinga-module.module-' . $moduleName . ' {';
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foreach ($moduleLessFiles as $moduleLessFile) {
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$moduleCss .= file_get_contents($moduleLessFile);
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}
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$moduleCss .= '}';
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}
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$this->source .= $moduleCss;
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if ($this->theme !== null) {
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$this->source .= file_get_contents($this->theme);
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}
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return preg_replace(
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'/(\.icinga-module\.module-[^\s]+) (#layout\.[^\s]+)/m',
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'\2 \1',
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$this->lessc->compile($this->source)
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);
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}
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}
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