libvirt/scripts/check-symsorting.py

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#!/usr/bin/env python3
# Copyright (C) 2012-2019 Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see
# <http://www.gnu.org/licenses/>.
import os.path
import re
import sys
if len(sys.argv) < 3:
print("syntax: %s SRCDIR SYMFILE..." % sys.argv[0], file=sys.stderr)
sys.exit(1)
def check_sorting(group, symfile, line, groupfile, lastgroup):
sortedgroup = sorted(group, key=str.lower)
issorted = True
first = None
last = None
err = False
# Check that groups are in order and groupfile exists
if lastgroup is not None and lastgroup.lower() > groupfile.lower():
print("Symbol block at %s:%s: block not sorted" %
(symfile, line), file=sys.stderr)
print("Move %s block before %s block" %
(groupfile, lastgroup), file=sys.stderr)
print("", file=sys.stderr)
err = True
if not os.path.exists(os.path.join(srcdir, groupfile)):
print("Symbol block at %s:%s: %s not found" %
(symfile, line, groupfile), file=sys.stderr)
print("", file=sys.stderr)
err = True
# Check that symbols within a group are in order
for i in range(len(group)):
if sortedgroup[i] != group[i]:
if first is None:
first = i
last = i
issorted = False
if not issorted:
actual = group[first:last]
expect = sortedgroup[first:last]
print("Symbol block at %s:%s: symbols not sorted" %
(symfile, line), file=sys.stderr)
for g in actual:
print(" %s" % g, file=sys.stderr)
print("Correct ordering", file=sys.stderr)
for g in expect:
print(" %s" % g, file=sys.stderr)
print("", file=sys.stderr)
err = True
return err
ret = 0
srcdir = sys.argv[1]
lastgroup = None
for symfile in sys.argv[2:]:
with open(symfile, "r") as fh:
lineno = 0
groupfile = ""
group = []
thisline = 0
for line in fh:
thisline = thisline + 1
line = line.strip()
filenamematch = re.search(r'''^#\s*((\w+\/)*(\w+\.h))\s*$''', line)
if filenamematch is not None:
groupfile = filenamematch.group(1)
elif line == "":
if len(group) > 0:
if check_sorting(group, symfile, lineno,
groupfile, lastgroup):
ret = 1
group = []
lineno = thisline
lastgroup = groupfile
elif line[0] == '#':
# Ignore comments
pass
else:
line = line.strip(";")
group.append(line)
if len(group) > 0:
if check_sorting(group, symfile, lineno,
groupfile, lastgroup):
ret = 1
lastgroup = None
sys.exit(ret)