public function compileFile(AssetInfo $assetInfo)
{
$assetPath = $assetInfo->getPath();
$localPath = $this->getAssetPath($assetPath);
if (!file_exists($localPath)) {
return null;
}
$publicPath = $this->getPublicAssetPath($assetPath);
$targetPath = 'cache/scss/' . substr($publicPath, 0, strrpos($publicPath, '.'));
if ('.css' !== substr($targetPath, -4)) {
$targetPath .= '.css';
}
$needsCompilation = true;
$sourceMTime = filemtime($localPath);
$dir = dirname($localPath);
if ($this->filesystem->has('web/' . $targetPath)) {
$fh = $this->filesystem->handle('web/' . $targetPath);
if ($fh) {
$firstLine = fgets($fh);
$info = substr($firstLine, strlen('/* compiled at '), -3);
$spacePosition = strpos($info, ' ');
$lastSourceMTime = 0;
$dependencies = [];
if ($spacePosition > 0) {
$lastSourceMTime = (int) substr($info, 0, $spacePosition);
$dependencies = trim(substr($info, $spacePosition + 1));
if ($dependencies) {
$dependencies = explode(',', trim(substr($info, $spacePosition + 1)));
} else {
$dependencies = [];
}
} else {
//old format without dependencies
$lastSourceMTime = (int) $info;
}
$needsCompilation = $lastSourceMTime !== $sourceMTime;
if (!$needsCompilation) {
//check dependencies
foreach ($dependencies as $dependency) {
list($path, $depLastMTime) = explode(':', $dependency);
$depLastMTime = (int) $depLastMTime;
if (!file_exists($dir . '/' . $path)) {
//depended file does not exist anymore, so we need to recompile
$needsCompilation = true;
break;
}
$depSourceMTime = filemtime($dir . '/' . $path);
if ($depLastMTime !== $depSourceMTime) {
$needsCompilation = true;
break;
}
}
}
}
}
if ($needsCompilation) {
//resolve all dependencies
$dependencies = [];
$this->resolveDependencies($localPath, $dependencies);
$processBuilder = new ProcessBuilder();
$processBuilder->setInput(file_get_contents($localPath))->add('sass')->add('--scss')->add('--no-cache')->add('--unix-newlines')->add('--load-path')->add(dirname($localPath))->add($localPath)->enableOutput();
$process = $processBuilder->getProcess();
$process->start();
while ($process->isRunning()) {
}
if (127 === $process->getExitCode()) {
throw new \RuntimeException('sass binary not found. Please install sass first and make its in $PATH. ' . $process->getExitCodeText());
}
if (0 !== $process->getExitCode()) {
throw new \RuntimeException(sprintf("Error during scss compilation of %s:\n%s\n%s\n%s", $assetPath, $process->getExitCodeText(), $process->getErrorOutput(), $process->getOutput()));
}
$compiled = $process->getOutput();
$compiled = $this->replaceRelativePaths($publicPath, $targetPath, $compiled);
$dependencies = implode(',', $dependencies);
$info = "{$sourceMTime} {$dependencies}";
$compiled = "/* compiled at {$info} */\n" . $compiled;
$this->filesystem->write('web/' . $targetPath, $compiled);
}
$assetInfo = new AssetInfo();
$assetInfo->setPath($targetPath);
$assetInfo->setContentType('text/css');
return $assetInfo;
}
