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![Simon Glass](/assets/img/avatar_default.png)
It is convenient to be able to deal with checkpatch warnings in the same way as build warnings. Tools such as emacs and kate can quickly locate the source file and line automatically. To achieve this, adjust the format to match the C compiler, and output to stderr. Signed-off-by: Simon Glass <sjg@chromium.org>
176 lines
6.1 KiB
Python
176 lines
6.1 KiB
Python
# Copyright (c) 2011 The Chromium OS Authors.
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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import collections
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import command
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import gitutil
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import os
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import re
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import sys
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import terminal
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def FindCheckPatch():
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top_level = gitutil.GetTopLevel()
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try_list = [
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os.getcwd(),
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os.path.join(os.getcwd(), '..', '..'),
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os.path.join(top_level, 'tools'),
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os.path.join(top_level, 'scripts'),
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'%s/bin' % os.getenv('HOME'),
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]
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# Look in current dir
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for path in try_list:
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fname = os.path.join(path, 'checkpatch.pl')
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if os.path.isfile(fname):
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return fname
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# Look upwwards for a Chrome OS tree
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while not os.path.ismount(path):
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fname = os.path.join(path, 'src', 'third_party', 'kernel', 'files',
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'scripts', 'checkpatch.pl')
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if os.path.isfile(fname):
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return fname
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path = os.path.dirname(path)
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sys.exit('Cannot find checkpatch.pl - please put it in your ' +
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'~/bin directory or use --no-check')
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def CheckPatch(fname, verbose=False):
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"""Run checkpatch.pl on a file.
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Returns:
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namedtuple containing:
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ok: False=failure, True=ok
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problems: List of problems, each a dict:
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'type'; error or warning
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'msg': text message
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'file' : filename
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'line': line number
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errors: Number of errors
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warnings: Number of warnings
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checks: Number of checks
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lines: Number of lines
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stdout: Full output of checkpatch
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"""
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fields = ['ok', 'problems', 'errors', 'warnings', 'checks', 'lines',
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'stdout']
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result = collections.namedtuple('CheckPatchResult', fields)
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result.ok = False
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result.errors, result.warning, result.checks = 0, 0, 0
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result.lines = 0
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result.problems = []
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chk = FindCheckPatch()
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item = {}
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result.stdout = command.Output(chk, '--no-tree', fname,
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raise_on_error=False)
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#pipe = subprocess.Popen(cmd, stdout=subprocess.PIPE)
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#stdout, stderr = pipe.communicate()
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# total: 0 errors, 0 warnings, 159 lines checked
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# or:
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# total: 0 errors, 2 warnings, 7 checks, 473 lines checked
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re_stats = re.compile('total: (\\d+) errors, (\d+) warnings, (\d+)')
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re_stats_full = re.compile('total: (\\d+) errors, (\d+) warnings, (\d+)'
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' checks, (\d+)')
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re_ok = re.compile('.*has no obvious style problems')
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re_bad = re.compile('.*has style problems, please review')
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re_error = re.compile('ERROR: (.*)')
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re_warning = re.compile('WARNING: (.*)')
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re_check = re.compile('CHECK: (.*)')
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re_file = re.compile('#\d+: FILE: ([^:]*):(\d+):')
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for line in result.stdout.splitlines():
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if verbose:
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print(line)
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# A blank line indicates the end of a message
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if not line and item:
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result.problems.append(item)
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item = {}
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match = re_stats_full.match(line)
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if not match:
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match = re_stats.match(line)
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if match:
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result.errors = int(match.group(1))
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result.warnings = int(match.group(2))
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if len(match.groups()) == 4:
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result.checks = int(match.group(3))
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result.lines = int(match.group(4))
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else:
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result.lines = int(match.group(3))
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elif re_ok.match(line):
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result.ok = True
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elif re_bad.match(line):
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result.ok = False
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err_match = re_error.match(line)
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warn_match = re_warning.match(line)
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file_match = re_file.match(line)
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check_match = re_check.match(line)
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if err_match:
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item['msg'] = err_match.group(1)
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item['type'] = 'error'
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elif warn_match:
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item['msg'] = warn_match.group(1)
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item['type'] = 'warning'
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elif check_match:
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item['msg'] = check_match.group(1)
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item['type'] = 'check'
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elif file_match:
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item['file'] = file_match.group(1)
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item['line'] = int(file_match.group(2))
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return result
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def GetWarningMsg(col, msg_type, fname, line, msg):
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'''Create a message for a given file/line
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Args:
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msg_type: Message type ('error' or 'warning')
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fname: Filename which reports the problem
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line: Line number where it was noticed
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msg: Message to report
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'''
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if msg_type == 'warning':
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msg_type = col.Color(col.YELLOW, msg_type)
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elif msg_type == 'error':
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msg_type = col.Color(col.RED, msg_type)
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elif msg_type == 'check':
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msg_type = col.Color(col.MAGENTA, msg_type)
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return '%s:%d: %s: %s\n' % (fname, line, msg_type, msg)
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def CheckPatches(verbose, args):
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'''Run the checkpatch.pl script on each patch'''
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error_count, warning_count, check_count = 0, 0, 0
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col = terminal.Color()
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for fname in args:
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result = CheckPatch(fname, verbose)
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if not result.ok:
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error_count += result.errors
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warning_count += result.warnings
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check_count += result.checks
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print('%d errors, %d warnings, %d checks for %s:' % (result.errors,
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result.warnings, result.checks, col.Color(col.BLUE, fname)))
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if (len(result.problems) != result.errors + result.warnings +
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result.checks):
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print("Internal error: some problems lost")
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for item in result.problems:
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sys.stderr.write(
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GetWarningMsg(col, item.get('type', '<unknown>'),
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item.get('file', '<unknown>'),
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item.get('line', 0), item.get('msg', 'message')))
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print
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#print(stdout)
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if error_count or warning_count or check_count:
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str = 'checkpatch.pl found %d error(s), %d warning(s), %d checks(s)'
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color = col.GREEN
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if warning_count:
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color = col.YELLOW
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if error_count:
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color = col.RED
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print(col.Color(color, str % (error_count, warning_count, check_count)))
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return False
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return True
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