gem5/util/git-pre-commit.py

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#!/usr/bin/env python2
#
# Copyright (c) 2016 ARM Limited
# All rights reserved
#
# The license below extends only to copyright in the software and shall
# not be construed as granting a license to any other intellectual
# property including but not limited to intellectual property relating
# to a hardware implementation of the functionality of the software
# licensed hereunder. You may use the software subject to the license
# terms below provided that you ensure that this notice is replicated
# unmodified and in its entirety in all distributions of the software,
# modified or unmodified, in source code or in binary form.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Authors: Andreas Sandberg
from tempfile import TemporaryFile
import os
import subprocess
import sys
from style.repo import GitRepo
from style.verifiers import all_verifiers, all_regions
from style.style import StdioUI, check_ignores
import argparse
parser = argparse.ArgumentParser(
description="gem5 git style checker hook")
parser.add_argument("--verbose", "-v", action="store_true",
help="Produce verbose output")
args = parser.parse_args()
git = GitRepo()
opts = {}
repo_base = git.repo_base()
ui = StdioUI()
os.chdir(repo_base)
failing_files = set()
staged_mismatch = set()
for status, fname in git.status(filter="MA", cached=True):
if args.verbose:
print "Checking %s..." % fname
if check_ignores(fname):
continue
if status == "M":
regions = git.staged_regions(fname)
else:
regions = all_regions
# Show they appropriate object and dump it to a file
status = git.file_from_index(fname)
f = TemporaryFile()
f.write(status)
verifiers = [ v(ui, opts, base=repo_base) for v in all_verifiers ]
for v in verifiers:
f.seek(0)
# It is prefered that the first check is silent as it is in the
# staged file. If the check fails, then we will do it non-silently
# on the current file, reporting meaningful shortcomings
if not v.skip(fname) and v.check(fname, regions, fobj=f, silent=True):
failing_files.add(fname)
if not v.check(fname, regions):
staged_mismatch.add(fname)
f.close()
if failing_files:
if len(failing_files) > len(staged_mismatch):
print >> sys.stderr
print >> sys.stderr, "Style checker failed for the following files:"
for f in failing_files:
if f not in staged_mismatch:
print >> sys.stderr, "\t%s" % f
print >> sys.stderr
print >> sys.stderr, \
"Please run the style checker manually to fix the offending files.\n" \
"To check your modifications, run: util/style.py -m"
print >> sys.stderr
if staged_mismatch:
print >> sys.stderr, \
"It looks like you have forgotten to stage your fixes for commit in\n"\
"the following files: "
for f in staged_mismatch:
print >> sys.stderr, "\t%s" % f
print >> sys.stderr, "Please `git --add' them"
sys.exit(1)