From a3d1b1505f44acb1f370594ac3978811f3af0251 Mon Sep 17 00:00:00 2001
From: Pierre-Yves Chibon <pingou@pingoured.fr>
Date: Aug 03 2014 12:59:49 +0000
Subject: Add base work for the progit hook to update the ticket information in the DB upon push


---

diff --git a/progit/hooks/files/progit_hook_tickets.py b/progit/hooks/files/progit_hook_tickets.py
new file mode 100644
index 0000000..47655b0
--- /dev/null
+++ b/progit/hooks/files/progit_hook_tickets.py
@@ -0,0 +1,112 @@
+#! /usr/bin/env python2
+
+
+"""Progit specific hook to update tickets stored in the database based on
+the information pushed in the tickets git repository.
+"""
+
+import os
+import re
+import sys
+import subprocess
+
+
+# We need to access the database
+if 'PROGIT_CONFIG' not in os.environ \
+        and os.path.exists('/etc/progit/progit.cfg'):
+    print 'Using configuration file `/etc/progit/progit.cfg`'
+    os.environ['PROGIT_CONFIG'] = '/etc/progit/progit.cfg'
+
+sys.path.insert(0, os.path.expanduser('~/repos/gitrepo/progit'))
+
+
+def read_git_output(args, input=None, keepends=False, **kw):
+    """Read the output of a Git command."""
+
+    return read_output(['git'] + args, input=input, keepends=keepends, **kw)
+
+
+def read_git_lines(args, keepends=False, **kw):
+    """Return the lines output by Git command.
+
+    Return as single lines, with newlines stripped off."""
+
+    return read_git_output(args, keepends=True, **kw).splitlines(keepends)
+
+
+def read_output(cmd, input=None, keepends=False, **kw):
+    if input:
+        stdin = subprocess.PIPE
+    else:
+        stdin = None
+    p = subprocess.Popen(
+        cmd, stdin=stdin, stdout=subprocess.PIPE, stderr=subprocess.PIPE, **kw
+        )
+    (out, err) = p.communicate(input)
+    retcode = p.wait()
+    if retcode:
+        print 'ERROR: %s =-- %s' % (cmd, retcode)
+    if not keepends:
+        out = out.rstrip('\n\r')
+    return out
+
+
+def get_files_to_load(new_commits_list):
+
+    print 'Files changed by new commits:\n\n'
+    file_list = []
+    for line in read_git_lines(
+            ['show', '--pretty="format:"', '--name-only', '-r']
+            + new_commits_list,
+            keepends=False,
+        ):
+        if line.strip():
+            file_list.append(line.strip())
+
+    return file_list
+
+
+def get_commits_id(fromrev, torev):
+    ''' Retrieve the list commit between two revisions and return the list
+    of their identifier.
+    '''
+    cmd = ['rev-list', '%s...%s' %(torev, fromrev)]
+    return read_git_lines(cmd)
+
+
+def get_repo_name():
+    ''' Return the name of the git repo based on its path.
+    '''
+    repo = os.path.basename(os.getcwd()).split('.git')[0]
+    return repo
+
+
+def run_as_post_receive_hook():
+
+    file_list = set()
+    for line in sys.stdin:
+        print line
+        (oldrev, newrev, refname) = line.strip().split(' ', 2)
+
+        print '  -- Old rev'
+        print oldrev
+        print '  -- New rev'
+        print newrev
+        print '  -- Ref name'
+        print refname
+
+        file_list.union(
+            set(get_files_to_load(get_commits_id(oldrev, newrev))))
+
+    for filename in file_list:
+        print 'To load: %s' % filename
+
+    print 'repo:', get_repo_name()
+
+
+def main(args):
+        run_as_post_receive_hook()
+
+
+if __name__ == '__main__':
+    main(sys.argv[1:])