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146 lines
4.7 KiB
Python
Executable File
146 lines
4.7 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# cpep8.py - Check Python source files for PEP8 compliance.
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#
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# Copyright 2015 Zachary T Welch <zach@mandolincreekfarm.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import warnings
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import os
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import sys
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import logging
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import argparse
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# pep8 has a FutureWarning about nested sets. This isn't our problem, so
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# squelch it here during import.
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with warnings.catch_warnings():
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warnings.simplefilter('ignore')
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import pep8
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parser = argparse.ArgumentParser()
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parser.add_argument("-a", "--all", action="store_true",
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help="Check all files, ignoring blacklist")
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parser.add_argument("-d", "--dir", action="store", default=".",
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help="Root directory of source tree")
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parser.add_argument("-s", "--stats", action="store_true",
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help="Only show statistics")
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parser.add_argument("--strict", action="store_true",
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help="Ignore listed exceptions")
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parser.add_argument("-S", "--scan", action="store_true",
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help="Scan for additional files")
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parser.add_argument("-u", "--update", action="store_true",
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help="Update manifest/blacklist files")
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parser.add_argument("-v", "--verbose", action="store_true",
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help="Display list of checked files")
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parser.add_argument("files", metavar="file", nargs='*',
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help="List of files to check (if none, check all)")
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args = parser.parse_args()
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def file_to_lines(name):
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fh = open(name, "r")
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lines = fh.read().split("\n")
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lines.pop()
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fh.close()
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return lines
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scriptdir = os.path.dirname(sys.argv[0])
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manifest_filename = os.path.join(scriptdir, "cpep8.manifest")
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blacklist_filename = os.path.join(scriptdir, "cpep8.blacklist")
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exceptions_filename = os.path.join(scriptdir, "cpep8.exceptions")
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manifest = []
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if args.scan:
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for root, dirs, files in os.walk(args.dir):
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for f in files:
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filename = os.path.join(root, f)
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if f.endswith('.py'):
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manifest.append(filename)
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continue
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with open(filename, "r") as fh:
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shebang = fh.readline()
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if shebang.startswith("#!/usr/bin/env python"):
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manifest.append(filename)
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else:
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manifest += file_to_lines(manifest_filename)
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# unless we are being --strict, load per-file style exceptions
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exceptions = {}
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if not args.strict:
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exception_lines = file_to_lines(exceptions_filename)
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exception_lists = [x.split('\t')
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for x in exception_lines if not x.startswith('#')]
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for filename, codes in exception_lists:
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exceptions[filename] = codes
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def get_exceptions(f):
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try:
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ignore = exceptions[f]
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except KeyError:
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ignore = None
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return ignore
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if args.update:
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print("Starting update of %d files" % len(manifest))
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bad = []
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for f in manifest:
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checker = pep8.StyleGuide(quiet=True, ignore=get_exceptions(f))
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results = checker.check_files([f])
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if results.total_errors:
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bad.append(f)
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print("%s: %s" % (results.total_errors and "FAIL" or "PASS", f))
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with open(blacklist_filename, "w") as fh:
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fh.write("""\
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# cpep8.blacklist: The list of files that do not meet PEP8 standards.
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# DO NOT ADD NEW FILES!! Instead, fix the code to be compliant.
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# Over time, this list should shrink and (eventually) be eliminated.""")
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fh.write("\n".join(sorted(bad)))
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if args.scan:
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with open(manifest_filename, "w") as fh:
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fh.write("\n".join(sorted(manifest)))
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sys.exit(0)
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if args.files:
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manifest = args.files
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# read the blacklisted source files
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blacklist = file_to_lines(blacklist_filename)
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check_list = []
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for f in manifest:
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if args.all or f not in blacklist:
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check_list.append(f)
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check_list = sorted(check_list)
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total_errors = 0
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for f in check_list:
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if args.verbose:
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print("Checking %s" % f)
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checker = pep8.Checker(f, quiet=args.stats, ignore=get_exceptions(f))
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results = checker.check_all()
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if args.stats:
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checker.report.print_statistics()
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total_errors += results
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sys.exit(total_errors and 1 or 0)
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