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# Copyright (c) 2011 The Chromium OS Authors.
#
# See file CREDITS for list of people who contributed to this
# project.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
#
import command
import gitutil
import os
import re
import terminal
def FindCheckPatch():
try_list = [
os.getcwd(),
os.path.join(os.getcwd(), '..', '..'),
os.path.join(gitutil.GetTopLevel(), 'tools'),
'%s/bin' % os.getenv('HOME'),
]
# Look in current dir
for path in try_list:
fname = os.path.join(path, 'checkpatch.pl')
if os.path.isfile(fname):
return fname
# Look upwwards for a Chrome OS tree
while not os.path.ismount(path):
fname = os.path.join(path, 'src', 'third_party', 'kernel', 'files',
'scripts', 'checkpatch.pl')
if os.path.isfile(fname):
return fname
path = os.path.dirname(path)
print 'Could not find checkpatch.pl'
return None
def CheckPatch(fname, verbose=False):
"""Run checkpatch.pl on a file.
Returns:
4-tuple containing:
result: False=failure, True=ok
problems: List of problems, each a dict:
'type'; error or warning
'msg': text message
'file' : filename
'line': line number
lines: Number of lines
"""
result = False
error_count, warning_count, lines = 0, 0, 0
problems = []
chk = FindCheckPatch()
if not chk:
raise OSError, ('Cannot find checkpatch.pl - please put it in your ' +
'~/bin directory')
item = {}
stdout = command.Output(chk, '--no-tree', fname)
#pipe = subprocess.Popen(cmd, stdout=subprocess.PIPE)
#stdout, stderr = pipe.communicate()
# total: 0 errors, 0 warnings, 159 lines checked
re_stats = re.compile('total: (\\d+) errors, (\d+) warnings, (\d+)')
re_ok = re.compile('.*has no obvious style problems')
re_bad = re.compile('.*has style problems, please review')
re_error = re.compile('ERROR: (.*)')
re_warning = re.compile('WARNING: (.*)')
re_file = re.compile('#\d+: FILE: ([^:]*):(\d+):')
for line in stdout.splitlines():
if verbose:
print line
# A blank line indicates the end of a message
if not line and item:
problems.append(item)
item = {}
match = re_stats.match(line)
if match:
error_count = int(match.group(1))
warning_count = int(match.group(2))
lines = int(match.group(3))
elif re_ok.match(line):
result = True
elif re_bad.match(line):
result = False
match = re_error.match(line)
if match:
item['msg'] = match.group(1)
item['type'] = 'error'
match = re_warning.match(line)
if match:
item['msg'] = match.group(1)
item['type'] = 'warning'
match = re_file.match(line)
if match:
item['file'] = match.group(1)
item['line'] = int(match.group(2))
return result, problems, error_count, warning_count, lines, stdout
def GetWarningMsg(col, msg_type, fname, line, msg):
'''Create a message for a given file/line
Args:
msg_type: Message type ('error' or 'warning')
fname: Filename which reports the problem
line: Line number where it was noticed
msg: Message to report
'''
if msg_type == 'warning':
msg_type = col.Color(col.YELLOW, msg_type)
elif msg_type == 'error':
msg_type = col.Color(col.RED, msg_type)
return '%s: %s,%d: %s' % (msg_type, fname, line, msg)
def CheckPatches(verbose, args):
'''Run the checkpatch.pl script on each patch'''
error_count = 0
warning_count = 0
col = terminal.Color()
for fname in args:
ok, problems, errors, warnings, lines, stdout = CheckPatch(fname,
verbose)
if not ok:
error_count += errors
warning_count += warnings
print '%d errors, %d warnings for %s:' % (errors,
warnings, fname)
if len(problems) != error_count + warning_count:
print "Internal error: some problems lost"
for item in problems:
print GetWarningMsg(col, item['type'],
item.get('file', '<unknown>'),
item.get('line', 0), item['msg'])
#print stdout
if error_count != 0 or warning_count != 0:
str = 'checkpatch.pl found %d error(s), %d warning(s)' % (
error_count, warning_count)
color = col.GREEN
if warning_count:
color = col.YELLOW
if error_count:
color = col.RED
print col.Color(color, str)
return False
return True
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