--- /dev/null
+<?php
+
+namespace DrupalCodeGenerator\Command\Drupal_7;
+
+use DrupalCodeGenerator\Command\BaseGenerator;
+use DrupalCodeGenerator\Utils;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Question\Question;
+
+/**
+ * Implements d7:hook command.
+ */
+class Hook extends BaseGenerator {
+
+ protected $name = 'd7:hook';
+ protected $description = 'Generates a hook';
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function interact(InputInterface $input, OutputInterface $output) {
+ $questions = Utils::defaultQuestions();
+ $questions['hook_name'] = new Question('Hook name');
+ $questions['hook_name']->setValidator(function ($value) {
+ if (!in_array($value, $this->getSupportedHooks())) {
+ throw new \UnexpectedValueException('The value is not correct class name.');
+ }
+ return $value;
+ });
+ $questions['hook_name']->setAutocompleterValues($this->getSupportedHooks());
+
+ $vars = $this->collectVars($input, $output, $questions);
+
+ // Most Drupal hooks are situated in a module file but some are not.
+ $special_hooks = [
+ 'install' => [
+ 'install',
+ 'uninstall',
+ 'enable',
+ 'disable',
+ 'schema',
+ 'schema_alter',
+ 'field_schema',
+ 'requirements',
+ 'update_N',
+ 'update_last_removed',
+ ],
+ // See system_hook_info().
+ 'tokens.inc' => [
+ 'token_info',
+ 'token_info_alter',
+ 'tokens',
+ 'tokens_alter',
+ ],
+ ];
+
+ $file_type = 'module';
+ foreach ($special_hooks as $group => $hooks) {
+ if (in_array($vars['hook_name'], $hooks)) {
+ $file_type = $group;
+ break;
+ }
+ }
+
+ $this->addFile()
+ ->path("{machine_name}.$file_type")
+ ->headerTemplate("d7/file-docs/$file_type.twig")
+ ->template('d7/hook/' . $vars['hook_name'] . '.twig')
+ ->action('append')
+ ->headerSize(7);
+ }
+
+ /**
+ * Gets list of supported hooks.
+ *
+ * @return array
+ * List of supported hooks.
+ */
+ protected function getSupportedHooks() {
+ return array_map(function ($file) {
+ return pathinfo($file, PATHINFO_FILENAME);
+ }, array_diff(scandir($this->templatePath . '/d7/hook'), ['.', '..']));
+ }
+
+}