[PATCH 3 of 3] scripts: add new script shortlog

[Thomas De Schampheleire]

# HG changeset patch
# User Thomas De Schampheleire <thomas.de_schampheleire at nokia.com>
# Date 1552681549 -3600
#      Fri Mar 15 21:25:49 2019 +0100
# Node ID d6b56936f5471fd09e48b7f7b7de1b566840949a
# Parent  654d65920609cb9fca27a739df4d170330beb728
scripts: add new script shortlog

Useful for release announcements, shortlog.py presents a list of committers
corresponding to the specified revision set, along with their count of
commits in that set.

diff --git a/scripts/shortlog.py b/scripts/shortlog.py
new file mode 100755
--- /dev/null
+++ b/scripts/shortlog.py
@@ -0,0 +1,34 @@
+#!/usr/bin/env python2
+# -*- coding: utf-8 -*-
+
+"""
+Kallithea script for generating a quick overview of contributors and their
+commit counts in a given revision set.
+"""
+import argparse
+import os
+from collections import Counter
+import contributor_data
+
+def main():
+
+    parser = argparse.ArgumentParser(description='Generate a list of committers and commit counts.')
+    parser.add_argument('revset',
+                        help='revision set specifying the commits to count')
+    args = parser.parse_args()
+
+    repo_entries = [
+        (contributor_data.name_fixes.get(name) or contributor_data.name_fixes.get(name.rsplit('<', 1)[0].strip()) or name).rsplit('<', 1)[0].strip()
+        for name in (line.strip()
+         for line in os.popen("""hg log -r '%s' -T '{author}\n'""" % args.revset).readlines())
+        ]
+
+    counter = Counter(repo_entries)
+    for name, count in counter.most_common():
+        if name == '':
+            continue
+        print('%4s %s' % (count, name))
+
+
+if __name__ == '__main__':
+    main()