From 83ea90296e001c3df6f1eb9933db65c1d45a1b37 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Tue, 2 Apr 2013 10:34:49 +0200
Subject: [PATCH] Add COMPOSER_NO_INTERACTION env var to allow travis & others
 to easily make sure every composer run is non-interactive

---
 doc/03-cli.md                        | 5 +++++
 src/Composer/Console/Application.php | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/doc/03-cli.md b/doc/03-cli.md
index aa99a1371..de72f0136 100644
--- a/doc/03-cli.md
+++ b/doc/03-cli.md
@@ -423,4 +423,9 @@ configuration in the project's `composer.json` always wins.
 This env var controls the time composer waits for commands (such as git
 commands) to finish executing. The default value is 300 seconds (5 minutes).
 
+### COMPOSER_NO_INTERACTION
+
+If set to 1, this env var will make composer behave as if you passed the
+`--no-interaction` flag to every command. This can be set on build boxes/CI.
+
 &larr; [Libraries](02-libraries.md)  |  [Schema](04-schema.md) &rarr;
diff --git a/src/Composer/Console/Application.php b/src/Composer/Console/Application.php
index 40dfd9eb9..214b6ca5a 100755
--- a/src/Composer/Console/Application.php
+++ b/src/Composer/Console/Application.php
@@ -100,6 +100,10 @@ class Application extends BaseApplication
             }
         }
 
+        if (getenv('COMPOSER_NO_INTERACTION')) {
+            $input->setInteractive(false);
+        }
+
         if ($input->hasParameterOption('--profile')) {
             $startTime = microtime(true);
             $this->io->enableDebugging($startTime);