From d70320af518bf0c8784271dd9dd9c63b1ab45830 Mon Sep 17 00:00:00 2001
From: Alexander Obuhovich <aik.bold@gmail.com>
Date: Wed, 13 May 2015 00:07:07 +0300
Subject: [PATCH] Allow `_completion` command to auto-complete it's arguments
 or their values

---
 src/CompletionCommand.php | 52 +++++++++++++++++++++++++--------------
 src/CompletionHandler.php | 10 ++++----
 2 files changed, 39 insertions(+), 23 deletions(-)

diff --git a/src/CompletionCommand.php b/src/CompletionCommand.php
index d3d81da..88108b5 100644
--- a/src/CompletionCommand.php
+++ b/src/CompletionCommand.php
@@ -3,6 +3,7 @@
 namespace Stecman\Component\Symfony\Console\BashCompletion;
 
 use Symfony\Component\Console\Command\Command as SymfonyCommand;
+use Symfony\Component\Console\Input\InputDefinition;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -19,6 +20,7 @@ protected function configure()
     {
         $this
             ->setName('_completion')
+            ->setDefinition($this->createDefinition())
             ->setDescription('BASH completion hook.')
             ->setHelp(<<<END
 To enable BASH completion, run:
@@ -30,27 +32,17 @@ protected function configure()
     <comment>eval `[program] _completion -g -p [alias]`</comment>.
 
 END
-            )
-            ->addOption(
-                'generate-hook',
-                'g',
-                InputOption::VALUE_NONE,
-                'Generate BASH code that sets up completion for this application.'
-            )
-            ->addOption(
-                'program',
-                'p',
-                InputOption::VALUE_REQUIRED,
-                "Program name that should trigger completion\n<comment>(defaults to the absolute application path)</comment>."
-            )
-            ->addOption(
-                'shell-type',
-                null,
-                InputOption::VALUE_OPTIONAL,
-                'Set the shell type (zsh or bash). Otherwise this is determined automatically.'
             );
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function getNativeDefinition()
+    {
+        return $this->createDefinition();
+    }
+
     protected function execute(InputInterface $input, OutputInterface $output)
     {
         $this->handler = new CompletionHandler($this->getApplication());
@@ -110,4 +102,28 @@ protected function getShellType()
 
         return basename(getenv('SHELL'));
     }
+
+    protected function createDefinition()
+    {
+        return new InputDefinition(array(
+            new InputOption(
+                'generate-hook',
+                'g',
+                InputOption::VALUE_NONE,
+                'Generate BASH code that sets up completion for this application.'
+            ),
+            new InputOption(
+                'program',
+                'p',
+                InputOption::VALUE_REQUIRED,
+                "Program name that should trigger completion\n<comment>(defaults to the absolute application path)</comment>."
+            ),
+            new InputOption(
+                'shell-type',
+                null,
+                InputOption::VALUE_OPTIONAL,
+                'Set the shell type (zsh or bash). Otherwise this is determined automatically.'
+            ),
+        ));
+    }
 }
diff --git a/src/CompletionHandler.php b/src/CompletionHandler.php
index 0925df0..11998b5 100644
--- a/src/CompletionHandler.php
+++ b/src/CompletionHandler.php
@@ -177,7 +177,7 @@ protected function completeForOptionShortcuts()
         $word = $this->context->getCurrentWord();
 
         if (strpos($word, '-') === 0 && strlen($word) == 2) {
-            $definition = $this->command ? $this->command->getDefinition() : $this->application->getDefinition();
+            $definition = $this->command ? $this->command->getNativeDefinition() : $this->application->getDefinition();
 
             if ($definition->hasShortcut(substr($word, 1))) {
                 return array($word);
@@ -202,7 +202,7 @@ protected function completeForOptionShortcutValues()
             // Complete short options
             if ($left[0] == '-' && strlen($left) == 2) {
                 $shortcut = substr($left, 1);
-                $def = $this->command->getDefinition();
+                $def = $this->command->getNativeDefinition();
 
                 if (!$def->hasShortcut($shortcut)) {
                     return false;
@@ -232,7 +232,7 @@ protected function completeForOptionValues()
 
             if (strpos($left, '--') === 0) {
                 $name = substr($left, 2);
-                $def = $this->command->getDefinition();
+                $def = $this->command->getNativeDefinition();
 
                 if (!$def->hasOption($name)) {
                     return false;
@@ -279,7 +279,7 @@ protected function completeForCommandArguments()
     {
         if (strpos($this->context->getCurrentWord(), '-') !== 0) {
             if ($this->command) {
-                $argWords = $this->mapArgumentsToWords($this->command->getDefinition()->getArguments());
+                $argWords = $this->mapArgumentsToWords($this->command->getNativeDefinition()->getArguments());
                 $wordIndex = $this->context->getWordIndex();
 
                 if (isset($argWords[$wordIndex])) {
@@ -433,7 +433,7 @@ protected function getAllOptions()
         }
 
         return array_merge(
-            $this->command->getDefinition()->getOptions(),
+            $this->command->getNativeDefinition()->getOptions(),
             $this->application->getDefinition()->getOptions()
         );
     }