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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Check for stylistic and formal issues in .rst and .py
# files included in the documentation.
#
# 01/2009, Georg Brandl
# TODO: - wrong versions in versionadded/changed
# - wrong markup after versionchanged directive
import os
import re
import sys
import getopt
from os.path import join, splitext, abspath, exists
from collections import defaultdict
directives = [
# standard docutils ones
'admonition', 'attention', 'caution', 'class', 'compound', 'container',
'contents', 'csv-table', 'danger', 'date', 'default-role', 'epigraph',
'error', 'figure', 'footer', 'header', 'highlights', 'hint', 'image',
'important', 'include', 'line-block', 'list-table', 'meta', 'note',
'parsed-literal', 'pull-quote', 'raw', 'replace',
'restructuredtext-test-directive', 'role', 'rubric', 'sectnum', 'sidebar',
'table', 'target-notes', 'tip', 'title', 'topic', 'unicode', 'warning',
# Sphinx and Python docs custom ones
'acks', 'attribute', 'autoattribute', 'autoclass', 'autodata',
'autoexception', 'autofunction', 'automethod', 'automodule', 'centered',
'cfunction', 'class', 'classmethod', 'cmacro', 'cmdoption', 'cmember',
'code-block', 'confval', 'cssclass', 'ctype', 'currentmodule', 'cvar',
'data', 'decorator', 'decoratormethod', 'deprecated-removed',
'deprecated(?!-removed)', 'describe', 'directive', 'doctest', 'envvar',
'event', 'exception', 'function', 'glossary', 'highlight', 'highlightlang',
'impl-detail', 'index', 'literalinclude', 'method', 'miscnews', 'module',
'moduleauthor', 'opcode', 'pdbcommand', 'productionlist',
'program', 'role', 'sectionauthor', 'seealso', 'sourcecode', 'staticmethod',
'tabularcolumns', 'testcode', 'testoutput', 'testsetup', 'toctree', 'todo',
'todolist', 'versionadded', 'versionchanged'
]
all_directives = '(' + '|'.join(directives) + ')'
seems_directive_re = re.compile(r'(?<!\.)\.\. %s([^a-z:]|:(?!:))' % all_directives)
default_role_re = re.compile(r'(^| )`\w([^`]*?\w)?`($| )')
leaked_markup_re = re.compile(r'[a-z]::\s|`|\.\.\s*\w+:')
checkers = {}
checker_props = {'severity': 1, 'falsepositives': False}
def checker(*suffixes, **kwds):
"""Decorator to register a function as a checker."""
def deco(func):
for suffix in suffixes:
checkers.setdefault(suffix, []).append(func)
for prop in checker_props:
setattr(func, prop, kwds.get(prop, checker_props[prop]))
return func
return deco
@checker('.py', severity=4)
def check_syntax(fn, lines):
"""Check Python examples for valid syntax."""
code = ''.join(lines)
if '\r' in code:
if os.name != 'nt':
yield 0, '\\r in code file'
code = code.replace('\r', '')
try:
compile(code, fn, 'exec')
except SyntaxError as err:
yield err.lineno, 'not compilable: %s' % err
@checker('.rst', severity=2)
def check_suspicious_constructs(fn, lines):
"""Check for suspicious reST constructs."""
inprod = False
for lno, line in enumerate(lines):
if seems_directive_re.search(line):
yield lno+1, 'comment seems to be intended as a directive'
if '.. productionlist::' in line:
inprod = True
elif not inprod and default_role_re.search(line):
yield lno+1, 'default role used'
elif inprod and not line.strip():
inprod = False
@checker('.py', '.rst')
def check_whitespace(fn, lines):
"""Check for whitespace and line length issues."""
for lno, line in enumerate(lines):
if '\r' in line:
yield lno+1, '\\r in line'
if '\t' in line:
yield lno+1, 'OMG TABS!!!1'
if line[:-1].rstrip(' \t') != line[:-1]:
yield lno+1, 'trailing whitespace'
@checker('.rst', severity=0)
def check_line_length(fn, lines):
"""Check for line length; this checker is not run by default."""
for lno, line in enumerate(lines):
if len(line) > 81:
# don't complain about tables, links and function signatures
if line.lstrip()[0] not in '+|' and \
'http://' not in line and \
not line.lstrip().startswith(('.. function',
'.. method',
'.. cfunction')):
yield lno+1, "line too long"
@checker('.html', severity=2, falsepositives=True)
def check_leaked_markup(fn, lines):
"""Check HTML files for leaked reST markup; this only works if
the HTML files have been built.
"""
for lno, line in enumerate(lines):
if leaked_markup_re.search(line):
yield lno+1, 'possibly leaked markup: %r' % line
def main(argv):
usage = '''\
Usage: %s [-v] [-f] [-s sev] [-i path]* [path]
Options: -v verbose (print all checked file names)
-f enable checkers that yield many false positives
-s sev only show problems with severity >= sev
-i path ignore subdir or file path
''' % argv[0]
try:
gopts, args = getopt.getopt(argv[1:], 'vfs:i:')
except getopt.GetoptError:
print(usage)
return 2
verbose = False
severity = 1
ignore = []
falsepos = False
for opt, val in gopts:
if opt == '-v':
verbose = True
elif opt == '-f':
falsepos = True
elif opt == '-s':
severity = int(val)
elif opt == '-i':
ignore.append(abspath(val))
if len(args) == 0:
path = '.'
elif len(args) == 1:
path = args[0]
else:
print(usage)
return 2
if not exists(path):
print('Error: path %s does not exist' % path)
return 2
count = defaultdict(int)
for root, dirs, files in os.walk(path):
# ignore subdirs in ignore list
if abspath(root) in ignore:
del dirs[:]
continue
for fn in files:
fn = join(root, fn)
if fn[:2] == './':
fn = fn[2:]
# ignore files in ignore list
if abspath(fn) in ignore:
continue
ext = splitext(fn)[1]
checkerlist = checkers.get(ext, None)
if not checkerlist:
continue
if verbose:
print('Checking %s...' % fn)
try:
with open(fn, 'r', encoding='utf-8') as f:
lines = list(f)
except (IOError, OSError) as err:
print('%s: cannot open: %s' % (fn, err))
count[4] += 1
continue
for checker in checkerlist:
if checker.falsepositives and not falsepos:
continue
csev = checker.severity
if csev >= severity:
for lno, msg in checker(fn, lines):
print('[%d] %s:%d: %s' % (csev, fn, lno, msg))
count[csev] += 1
if verbose:
print()
if not count:
if severity > 1:
print('No problems with severity >= %d found.' % severity)
else:
print('No problems found.')
else:
for severity in sorted(count):
number = count[severity]
print('%d problem%s with severity %d found.' %
(number, number > 1 and 's' or '', severity))
return int(bool(count))
if __name__ == '__main__':
sys.exit(main(sys.argv))
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