From 493308abf91e146ca390148fe6d15b8830c485aa Mon Sep 17 00:00:00 2001
From: Andrew Naylor <argon@mkbot.net>
Date: Sat, 22 Aug 2015 02:11:36 +0800
Subject: [PATCH] Prevent progress bar if output is being piped

---
 mas-cli/DownloadQueueObserver.swift | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/mas-cli/DownloadQueueObserver.swift b/mas-cli/DownloadQueueObserver.swift
index 96c98dd..6c43cc0 100644
--- a/mas-cli/DownloadQueueObserver.swift
+++ b/mas-cli/DownloadQueueObserver.swift
@@ -40,6 +40,11 @@ struct ProgressState {
 }
 
 func progress(state: ProgressState) {
+    // Don't display the progress bar if we're not on a terminal
+    if isatty(fileno(stdout)) == 0 {
+        return
+    }
+    
     let barLength = 60
     
     let completeLength = Int(state.percentComplete * Float(barLength))