git-pre-commit.py revision 11467 
1#!/usr/bin/env python
2#
3# Copyright (c) 2016 ARM Limited
4# All rights reserved
5#
6# The license below extends only to copyright in the software and shall
7# not be construed as granting a license to any other intellectual
8# property including but not limited to intellectual property relating
9# to a hardware implementation of the functionality of the software
10# licensed hereunder.  You may use the software subject to the license
11# terms below provided that you ensure that this notice is replicated
12# unmodified and in its entirety in all distributions of the software,
13# modified or unmodified, in source code or in binary form.
14#
15# Redistribution and use in source and binary forms, with or without
16# modification, are permitted provided that the following conditions are
17# met: redistributions of source code must retain the above copyright
18# notice, this list of conditions and the following disclaimer;
19# redistributions in binary form must reproduce the above copyright
20# notice, this list of conditions and the following disclaimer in the
21# documentation and/or other materials provided with the distribution;
22# neither the name of the copyright holders nor the names of its
23# contributors may be used to endorse or promote products derived from
24# this software without specific prior written permission.
25#
26# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37#
38# Authors: Andreas Sandberg
39
40import os
41import sys
42
43from style.repo import GitRepo
44from style.verifiers import all_verifiers, all_regions
45from style.style import StdioUI, check_ignores
46
47import argparse
48
49parser = argparse.ArgumentParser(
50    description="gem5 git style checker hook")
51
52parser.add_argument("--verbose", "-v", action="store_true",
53                    help="Produce verbose output")
54
55args = parser.parse_args()
56
57git = GitRepo()
58
59opts = {}
60repo_base = git.repo_base()
61ui = StdioUI()
62
63os.chdir(repo_base)
64failing_files = set()
65
66for status, fname in git.status(filter="MA", cached=True):
67    if args.verbose:
68        print "Checking %s..." % fname
69    if check_ignores(fname):
70        continue
71    if status == "M":
72        regions = git.staged_regions(fname)
73    else:
74        regions = all_regions
75
76    verifiers = [ v(ui, opts, base=repo_base) for v in all_verifiers ]
77    for v in verifiers:
78        if v.check(fname, regions):
79            failing_files.add(fname)
80
81if failing_files:
82    print >> sys.stderr
83    print >> sys.stderr, "Style checker failed for the following files:"
84    for f in failing_files:
85        print >> sys.stderr, "\t%s" % f
86    print >> sys.stderr
87    print >> sys.stderr, \
88        "Please run the style checker manually to fix the offending files.\n" \
89        "To check your modifications, run: util/style.py -m"
90    sys.exit(1)
91