merged branch jfsimon/issue-4495 (PR #4496)

Commits
-------

5f328de [console] Fixed docblock.
c80e156 [console] Added style stack getter in formatter.
0ae5a45 [console] Removed hardcoded empty style from styles stack.

Discussion
----------

[console] Removed hardcoded style formatter from style stack.

Bug fix: yes
Feature addition: no
Backwards compatibility break: no
Symfony2 tests pass: yes

This PR make it possible to replace OutputFormatter again.
Fixes issue #4495.

---------------------------------------------------------------------------

by travisbot at 2012-06-06T15:29:44Z

This pull request [passes](http://travis-ci.org/symfony/symfony/builds/1531654) (merged c80e156f into 1541fe26).

---------------------------------------------------------------------------

by travisbot at 2012-06-06T15:29:53Z

This pull request [passes](http://travis-ci.org/symfony/symfony/builds/1533586) (merged 5f328dee into 1541fe26).

src/Symfony/Component/Console/Formatter/OutputFormatter.php

@@ -138,6 +138,14 @@ class OutputFormatter implements OutputFormatterInterface
         return preg_replace_callback(self::FORMAT_PATTERN, array($this, 'replaceStyle'), $message);
     }
 
+    /**
+     * @return OutputFormatterStyleStack
+     */
+    public function getStyleStack()
+    {
+        return $this->styleStack;
+    }
+
     /**
      * Replaces style of the output.
      *

src/Symfony/Component/Console/Formatter/OutputFormatterStyleStack.php

@@ -17,15 +17,23 @@ namespace Symfony\Component\Console\Formatter;
 class OutputFormatterStyleStack
 {
     /**
-     * @var OutputFormatterStyle[]
+     * @var OutputFormatterStyleInterface[]
      */
     private $styles;
 
     /**
-     * Constructor.
+     * @var OutputFormatterStyleInterface
      */
-    public function __construct()
+    private $emptyStyle;
+
+    /**
+     * Constructor.
+     *
+     * @param OutputFormatterStyleInterface $emptyStyle
+     */
+    public function __construct(OutputFormatterStyleInterface $emptyStyle = null)
     {
+        $this->emptyStyle = $emptyStyle ?: new OutputFormatterStyle();
         $this->reset();
     }
 
@@ -59,7 +67,7 @@ class OutputFormatterStyleStack
     public function pop(OutputFormatterStyleInterface $style = null)
     {
         if (empty($this->styles)) {
-            return new OutputFormatterStyle();
+            return $this->emptyStyle;
         }
 
         if (null === $style) {
@@ -85,9 +93,29 @@ class OutputFormatterStyleStack
     public function getCurrent()
     {
         if (empty($this->styles)) {
-            return new OutputFormatterStyle();
+            return $this->emptyStyle;
         }
 
         return $this->styles[count($this->styles)-1];
     }
+
+    /**
+     * @param OutputFormatterStyleInterface $emptyStyle
+     *
+     * @return OutputFormatterStyleStack
+     */
+    public function setEmptyStyle(OutputFormatterStyleInterface $emptyStyle)
+    {
+        $this->emptyStyle = $emptyStyle;
+
+        return $this;
+    }
+
+    /**
+     * @return OutputFormatterStyleInterface
+     */
+    public function getEmptyStyle()
+    {
+        return $this->emptyStyle;
+    }
 }