From 599a9dc518573701729b427bbe2a5f74309470d0 Mon Sep 17 00:00:00 2001
From: Pierre-Yves Chibon <pingou@pingoured.fr>
Date: Sep 01 2015 11:46:00 +0000
Subject: Add a method to detect if a changed set was force pushed or not


---

diff --git a/pagure/lib/git.py b/pagure/lib/git.py
index 9029f31..318e8ca 100644
--- a/pagure/lib/git.py
+++ b/pagure/lib/git.py
@@ -806,6 +806,15 @@ def get_revs_between(torev, fromrev, abspath):
     return pagure.lib.git.read_git_lines(cmd, abspath)
 
 
+def is_forced_push(torev, fromrev, abspath):
+    """ Returns wether there was a force push between HEAD and BASE. """
+
+    # Returns if there was any commits deleted in the changeset
+    cmd = ['rev-list', '%s' % torev, '^%s' % (fromrev)]
+    out = pagure.lib.git.read_git_lines(cmd, abspath)
+    return len(out) > 0
+
+
 def get_pusher(commit, abspath):
     ''' Return the name of the person that pushed the commit. '''
     user = pagure.lib.git.read_git_lines(