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# Copyright (c) 2011 The Chromium OS Authors.
#
# SPDX-License-Identifier: GPL-2.0+
#
import collections
import command
import gitutil
import os
import re
import sys
import terminal
def FindCheckPatch():
top_level = gitutil.GetTopLevel()
try_list = [
os.getcwd(),
os.path.join(os.getcwd(), '..', '..'),
os.path.join(top_level, 'tools'),
os.path.join(top_level, 'scripts'),
'%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 >> sys.stderr, ('Cannot find checkpatch.pl - please put it in your ' +
'~/bin directory or use --no-check')
sys.exit(1)
def CheckPatch(fname, verbose=False):
"""Run checkpatch.pl on a file.
Returns:
namedtuple containing:
ok: False=failure, True=ok
problems: List of problems, each a dict:
'type'; error or warning
'msg': text message
'file' : filename
'line': line number
errors: Number of errors
warnings: Number of warnings
checks: Number of checks
lines: Number of lines
stdout: Full output of checkpatch
"""
fields = ['ok', 'problems', 'errors', 'warnings', 'checks', 'lines',
'stdout']
result = collections.namedtuple('CheckPatchResult', fields)
result.ok = False
result.errors, result.warning, result.checks = 0, 0, 0
result.lines = 0
result.problems = []
chk = FindCheckPatch()
item = {}
result.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
# or:
# total: 0 errors, 2 warnings, 7 checks, 473 lines checked
re_stats = re.compile('total: (\\d+) errors, (\d+) warnings, (\d+)')
re_stats_full = re.compile('total: (\\d+) errors, (\d+) warnings, (\d+)'
' checks, (\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_check = re.compile('CHECK: (.*)')
re_file = re.compile('#\d+: FILE: ([^:]*):(\d+):')
for line in result.stdout.splitlines():
if verbose:
print line
# A blank line indicates the end of a message
if not line and item:
result.problems.append(item)
item = {}
match = re_stats_full.match(line)
if not match:
match = re_stats.match(line)
if match:
result.errors = int(match.group(1))
result.warnings = int(match.group(2))
if len(match.groups()) == 4:
result.checks = int(match.group(3))
result.lines = int(match.group(4))
else:
result.lines = int(match.group(3))
elif re_ok.match(line):
result.ok = True
elif re_bad.match(line):
result.ok = False
err_match = re_error.match(line)
warn_match = re_warning.match(line)
file_match = re_file.match(line)
check_match = re_check.match(line)
if err_match:
item['msg'] = err_match.group(1)
item['type'] = 'error'
elif warn_match:
item['msg'] = warn_match.group(1)
item['type'] = 'warning'
elif check_match:
item['msg'] = check_match.group(1)
item['type'] = 'check'
elif file_match:
item['file'] = file_match.group(1)
item['line'] = int(file_match.group(2))
return result
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)
elif msg_type == 'check':
msg_type = col.Color(col.MAGENTA, 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, warning_count, check_count = 0, 0, 0
col = terminal.Color()
for fname in args:
result = CheckPatch(fname, verbose)
if not result.ok:
error_count += result.errors
warning_count += result.warnings
check_count += result.checks
print '%d errors, %d warnings, %d checks for %s:' % (result.errors,
result.warnings, result.checks, col.Color(col.BLUE, fname))
if (len(result.problems) != result.errors + result.warnings +
result.checks):
print "Internal error: some problems lost"
for item in result.problems:
print GetWarningMsg(col, item.get('type', '<unknown>'),
item.get('file', '<unknown>'),
item.get('line', 0), item.get('msg', 'message'))
print
#print stdout
if error_count or warning_count or check_count:
str = 'checkpatch.pl found %d error(s), %d warning(s), %d checks(s)'
color = col.GREEN
if warning_count:
color = col.YELLOW
if error_count:
color = col.RED
print col.Color(color, str % (error_count, warning_count, check_count))
return False
return True
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