From ff52a69b91f68997bb8cb7b95acf513089afdc48 Mon Sep 17 00:00:00 2001
From: andreabravetti <andreabravetti@gmail.com>
Date: Mon, 28 May 2012 15:07:38 +0300
Subject: [PATCH] do not overwrite existing files

---
 youtube_dl/utils.py | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index ae30da53e..4c65bd070 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -166,6 +166,22 @@ def sanitize_open(filename, open_mode):
 
 	It returns the tuple (stream, definitive_file_name).
 	"""
+
+	# do not overwrite existing files
+	if filename != u'-':
+		if filename.endswith(u'.part'):
+        		_addpart = u'.part'
+        		_name, _ext = os.path.splitext(filename[:-len(u'.part')])
+        		filename = filename[:-len(u'.part')]
+    		else:
+        		_addpart = u''
+        		_name, _ext = os.path.splitext(filename)
+    		_count = 0
+    		while os.path.isfile(filename):
+        		_count += 1
+        		filename = "%s-%s%s" % (_name, _count, _ext)
+    		filename = "%s%s" % (filename,_addpart)
+
 	try:
 		if filename == u'-':
 			if sys.platform == 'win32':