class GenerateTheme in Drupal 9
Generates a new theme based on latest default markup.
Hierarchy
- class \Drupal\Core\Command\GenerateTheme extends \Symfony\Component\Console\Command\Command
Expanded class hierarchy of GenerateTheme
File
- core/
lib/ Drupal/ Core/ Command/ GenerateTheme.php, line 20
Namespace
Drupal\Core\CommandView source
class GenerateTheme extends Command {
/**
* The path for the Drupal root.
*
* @var string
*/
private $root;
/**
* {@inheritdoc}
*/
public function __construct(string $name = NULL) {
parent::__construct($name);
$this->root = dirname(__DIR__, 5);
}
/**
* {@inheritdoc}
*/
protected function configure() {
$this
->setName('generate-theme')
->setDescription('Generates a new theme based on latest default markup.')
->addArgument('machine-name', InputArgument::REQUIRED, 'The machine name of the generated theme')
->addOption('name', NULL, InputOption::VALUE_OPTIONAL, 'A name for the theme.')
->addOption('description', NULL, InputOption::VALUE_OPTIONAL, 'A description of your theme.')
->addOption('path', NULL, InputOption::VALUE_OPTIONAL, 'The path where your theme will be created. Defaults to: themes')
->addUsage('custom_theme --name "Custom Theme" --description "Custom theme generated from a starterkit theme" --path themes');
}
/**
* {@inheritdoc}
*/
protected function execute(InputInterface $input, OutputInterface $output) {
$io = new SymfonyStyle($input, $output);
// Change the directory to the Drupal root.
chdir($this->root);
// Path where the generated theme should be placed.
$destination_theme = $input
->getArgument('machine-name');
$default_destination = 'themes';
$destination = trim($input
->getOption('path') ?: $default_destination, '/') . '/' . $destination_theme;
if (is_dir($destination)) {
$io
->getErrorStyle()
->error("Theme could not be generated because the destination directory {$destination} exists already.");
return 1;
}
// Source directory for the theme.
$source_theme_name = 'starterkit_theme';
if (!($source_theme = $this
->getThemeInfo($source_theme_name))) {
$io
->getErrorStyle()
->error("Theme source theme {$source_theme_name} cannot be found .");
return 1;
}
$source = $source_theme
->getPath();
if (!is_dir($source)) {
$io
->getErrorStyle()
->error("Theme could not be generated because the source directory {$source} does not exist.");
return 1;
}
$tmp_dir = $this
->getUniqueTmpDirPath();
$this
->copyRecursive($source, $tmp_dir);
// Rename files based on the theme machine name.
$file_pattern = "/{$source_theme_name}\\.(theme|[^.]+\\.yml)/";
if ($files = @scandir($tmp_dir)) {
foreach ($files as $file) {
$location = $tmp_dir . '/' . $file;
if (is_dir($location)) {
continue;
}
if (preg_match($file_pattern, $file, $matches)) {
if (!rename($location, $tmp_dir . '/' . $destination_theme . '.' . $matches[1])) {
$io
->getErrorStyle()
->error("The file {$location} could not be moved.");
return 1;
}
}
}
}
else {
$io
->getErrorStyle()
->error("Temporary directory {$tmp_dir} cannot be opened.");
return 1;
}
// Info file.
$info_file = "{$tmp_dir}/{$destination_theme}.info.yml";
if (!file_exists($info_file)) {
$io
->getErrorStyle()
->error("The theme info file {$info_file} could not be read.");
return 1;
}
$info = Yaml::decode(file_get_contents($info_file));
$info['name'] = $input
->getOption('name') ?: $destination_theme;
// Unhide hidden themes.
unset($info['hidden']);
$info['core_version_requirement'] = '^' . $this
->getVersion();
if ($description = $input
->getOption('description')) {
$info['description'] = $description;
}
else {
unset($info['description']);
}
// Replace references to libraries.
if (isset($info['libraries'])) {
$info['libraries'] = preg_replace("/{$source_theme_name}(\\/.*)/", "{$destination_theme}\$1", $info['libraries']);
}
if (isset($info['libraries-extend'])) {
foreach ($info['libraries-extend'] as $key => $value) {
$info['libraries-extend'][$key] = preg_replace("/{$source_theme_name}(\\/.*)/", "{$destination_theme}\$1", $info['libraries-extend'][$key]);
}
}
if (isset($info['libraries-override'])) {
foreach ($info['libraries-override'] as $key => $value) {
if (isset($info['libraries-override'][$key]['dependencies'])) {
$info['libraries-override'][$key]['dependencies'] = preg_replace("/{$source_theme_name}(\\/.*)/", "{$destination_theme}\$1", $info['libraries-override'][$key]['dependencies']);
}
}
}
if (!file_put_contents($info_file, Yaml::encode($info))) {
$io
->getErrorStyle()
->error("The theme info file {$info_file} could not be written.");
return 1;
}
// Replace references to libraries in libraries.yml file.
$libraries_file = "{$tmp_dir}/{$destination_theme}.libraries.yml";
if (file_exists($libraries_file)) {
$libraries = Yaml::decode(file_get_contents($libraries_file));
foreach ($libraries as $key => $value) {
if (isset($libraries[$key]['dependencies'])) {
$libraries[$key]['dependencies'] = preg_replace("/{$source_theme_name}(\\/.*)/", "{$destination_theme}\$1", $libraries[$key]['dependencies']);
}
}
if (!file_put_contents($libraries_file, Yaml::encode($libraries))) {
$io
->getErrorStyle()
->error("The libraries file {$libraries_file} could not be written.");
return 1;
}
}
// Rename hooks.
$theme_file = "{$tmp_dir}/{$destination_theme}.theme";
if (file_exists($theme_file)) {
if (!file_put_contents($theme_file, preg_replace("/(function )({$source_theme_name})(_.*)/", "\$1{$destination_theme}\$3", file_get_contents($theme_file)))) {
$io
->getErrorStyle()
->error("The theme file {$theme_file} could not be written.");
return 1;
}
}
// Rename references to libraries in templates.
$iterator = new TemplateDirIterator(new \RegexIterator(new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($tmp_dir), \RecursiveIteratorIterator::LEAVES_ONLY), '/' . preg_quote('.html.twig') . '$/'));
foreach ($iterator as $template_file => $contents) {
$new_template_content = preg_replace("/(attach_library\\(['\")]){$source_theme_name}(\\/.*['\"]\\))/", "\$1{$destination_theme}\$2", $contents);
if (!file_put_contents($template_file, $new_template_content)) {
$io
->getErrorStyle()
->error("The template file {$template_file} could not be written.");
return 1;
}
}
if (!rename($tmp_dir, $destination)) {
$io
->getErrorStyle()
->error("The theme could not be moved to the destination: {$destination}.");
return 1;
}
$output
->writeln(sprintf('Theme generated successfully to %s', $destination));
return 0;
}
/**
* Copies files recursively.
*
* @param string $src
* A file or directory to be copied.
* @param string $dest
* Destination directory where the directory or file should be copied.
*
* @throws \RuntimeException
* Exception thrown if copying failed.
*/
private function copyRecursive($src, $dest) : void {
// Copy all subdirectories and files.
if (is_dir($src)) {
if (!mkdir($dest, FileSystem::CHMOD_DIRECTORY, FALSE)) {
throw new \RuntimeException("Directory {$dest} could not be created");
}
$handle = opendir($src);
while ($file = readdir($handle)) {
if ($file != "." && $file != "..") {
$this
->copyRecursive("{$src}/{$file}", "{$dest}/{$file}");
}
}
closedir($handle);
}
elseif (is_link($src)) {
symlink(readlink($src), $dest);
}
elseif (!copy($src, $dest)) {
throw new \RuntimeException("File {$src} could not be copied to {$dest}");
}
// Set permissions for the directory or file.
if (!is_link($dest)) {
if (is_dir($dest)) {
$mode = FileSystem::CHMOD_DIRECTORY;
}
else {
$mode = FileSystem::CHMOD_FILE;
}
if (!chmod($dest, $mode)) {
throw new \RuntimeException("The file permissions could not be set on {$src}");
}
}
}
/**
* Generates a path to a temporary location.
*
* @return string
*/
private function getUniqueTmpDirPath() : string {
return sys_get_temp_dir() . '/drupal-starterkit-theme-' . uniqid(md5(microtime()), TRUE);
}
/**
* Gets theme info using the theme name.
*
* @param string $theme
* The machine name of the theme.
*
* @return \Drupal\Core\Extension\Extension|null
*/
private function getThemeInfo(string $theme) : ?Extension {
$extension_discovery = new ExtensionDiscovery($this->root, FALSE, []);
$themes = $extension_discovery
->scan('theme');
if (!isset($themes[$theme])) {
return NULL;
}
return $themes[$theme];
}
/**
* Gets the current Drupal major version.
*
* @return string
*/
private function getVersion() : string {
return explode('.', \Drupal::VERSION)[0];
}
}
Members
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
GenerateTheme:: |
private | property | The path for the Drupal root. | |
GenerateTheme:: |
protected | function | ||
GenerateTheme:: |
private | function | Copies files recursively. | |
GenerateTheme:: |
protected | function | ||
GenerateTheme:: |
private | function | Gets theme info using the theme name. | |
GenerateTheme:: |
private | function | Generates a path to a temporary location. | |
GenerateTheme:: |
private | function | Gets the current Drupal major version. | |
GenerateTheme:: |
public | function |