From 417130506798627a70d5a82df51a91326d2738e0 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Tue, 24 Apr 2012 18:59:33 +0200
Subject: [PATCH] [Console] Use proc_open instead of exec to suppress errors
 when run on windows and stty is not present

---
 src/Symfony/Component/Console/Application.php | 23 +++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Console/Application.php b/src/Symfony/Component/Console/Application.php
index 38b3c54d3c..69c36ffc9e 100644
--- a/src/Symfony/Component/Console/Application.php
+++ b/src/Symfony/Component/Console/Application.php
@@ -838,7 +838,7 @@ class Application
             return preg_replace('{^(\d+)x.*$}', '$1', $ansicon);
         }
 
-        if (preg_match("{rows.(\d+);.columns.(\d+);}i", exec('stty -a | grep columns'), $match)) {
+        if (preg_match("{rows.(\d+);.columns.(\d+);}i", $this->getSttyColumns(), $match)) {
             return $match[1];
         }
     }
@@ -854,7 +854,7 @@ class Application
             return preg_replace('{^\d+x\d+ \(\d+x(\d+)\)$}', '$1', trim($ansicon));
         }
 
-        if (preg_match("{rows.(\d+);.columns.(\d+);}i", exec('stty -a | grep columns'), $match)) {
+        if (preg_match("{rows.(\d+);.columns.(\d+);}i", $this->getSttyColumns(), $match)) {
             return $match[2];
         }
     }
@@ -914,6 +914,25 @@ class Application
         ));
     }
 
+    /**
+     * Runs and parses stty -a if it's available, suppressing any error output
+     *
+     * @return string
+     */
+    private function getSttyColumns()
+    {
+        $descriptorspec = array(1 => array('pipe', 'w'), 2 => array('pipe', 'w'));
+        $process = proc_open('stty -a | grep columns', $descriptorspec, $pipes, null, null, array('suppress_errors' => true));
+        if (is_resource($process)) {
+            $info = stream_get_contents($pipes[1]);
+            fclose($pipes[1]);
+            fclose($pipes[2]);
+            proc_close($process);
+
+            return $info;
+        }
+    }
+
     /**
      * Sorts commands in alphabetical order.
      *