winfreed.py: create the file right before the download starts

This avoids creating the file when there is a failure getting the total
download size or initializing the progress bar.

diff --git a/winfreed.py b/winfreed.py
index b58358c..0492028 100755 (executable)
--- a/winfreed.py
+++ b/winfreed.py
@@ -108,8 +108,6 @@ def download_file(src_url, dest_dir):
         sys.stderr.write("Warning: %s exists!\n" % destfile)
         return
 
-    outfile = open(destfile, mode='w')
-
     total_size = response.info().getheader('Content-Length').strip()
     total_size = int(total_size)
 
@@ -118,6 +116,8 @@ def download_file(src_url, dest_dir):
                ' ', ETA(), ' ', FileTransferSpeed()]
     pbar = ProgressBar(widgets=widgets, maxval=total_size).start()
 
+    outfile = open(destfile, mode='w')
+
     bytes_so_far = 0
     while 1:
         chunk = response.read(CHUNK_SIZE)