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#!/usr/bin/env python
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#
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# check-code - a style and portability checker for Mercurial
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#
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# Copyright 2010 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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"""style and portability checker for Mercurial
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when a rule triggers wrong, do one of the following (prefer one from top):
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* do the work-around the rule suggests
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* doublecheck that it is a false match
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* improve the rule pattern
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* add an ignore pattern to the rule (3rd arg) which matches your good line
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(you can append a short comment and match this, like: #re-raises, # no-py24)
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* change the pattern to a warning and list the exception in test-check-code-hg
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* ONLY use no--check-code for skipping entire files from external sources
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"""
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import re, glob, os, sys
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import keyword
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import optparse
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try:
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import re2
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except ImportError:
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re2 = None
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def compilere(pat, multiline=False):
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if multiline:
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pat = '(?m)' + pat
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if re2:
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try:
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return re2.compile(pat)
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except re2.error:
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pass
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return re.compile(pat)
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def repquote(m):
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fromc = '.:'
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tochr = 'pq'
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def encodechr(i):
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if i > 255:
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return 'u'
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c = chr(i)
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if c in ' \n':
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return c
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if c.isalpha():
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return 'x'
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if c.isdigit():
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return 'n'
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try:
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return tochr[fromc.find(c)]
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except (ValueError, IndexError):
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return 'o'
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t = m.group('text')
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tt = ''.join(encodechr(i) for i in xrange(256))
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t = t.translate(tt)
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return m.group('quote') + t + m.group('quote')
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def reppython(m):
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comment = m.group('comment')
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if comment:
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l = len(comment.rstrip())
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return "#" * l + comment[l:]
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return repquote(m)
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def repcomment(m):
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return m.group(1) + "#" * len(m.group(2))
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def repccomment(m):
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t = re.sub(r"((?<=\n) )|\S", "x", m.group(2))
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return m.group(1) + t + "*/"
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def repcallspaces(m):
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t = re.sub(r"\n\s+", "\n", m.group(2))
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return m.group(1) + t
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def repinclude(m):
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return m.group(1) + "<foo>"
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def rephere(m):
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t = re.sub(r"\S", "x", m.group(2))
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return m.group(1) + t
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testpats = [
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[
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(r'pushd|popd', "don't use 'pushd' or 'popd', use 'cd'"),
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(r'\W\$?\(\([^\)\n]*\)\)', "don't use (()) or $(()), use 'expr'"),
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(r'grep.*-q', "don't use 'grep -q', redirect to /dev/null"),
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(r'(?<!hg )grep.*-a', "don't use 'grep -a', use in-line python"),
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(r'sed.*-i', "don't use 'sed -i', use a temporary file"),
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(r'\becho\b.*\\n', "don't use 'echo \\n', use printf"),
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(r'echo -n', "don't use 'echo -n', use printf"),
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(r'(^| )wc[^|]*$\n(?!.*\(re\))', "filter wc output"),
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(r'head -c', "don't use 'head -c', use 'dd'"),
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(r'tail -n', "don't use the '-n' option to tail, just use '-<num>'"),
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(r'sha1sum', "don't use sha1sum, use $TESTDIR/md5sum.py"),
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(r'ls.*-\w*R', "don't use 'ls -R', use 'find'"),
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(r'printf.*[^\\]\\([1-9]|0\d)', "don't use 'printf \NNN', use Python"),
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(r'printf.*[^\\]\\x', "don't use printf \\x, use Python"),
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(r'\$\(.*\)', "don't use $(expr), use `expr`"),
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(r'rm -rf \*', "don't use naked rm -rf, target a directory"),
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(r'(^|\|\s*)grep (-\w\s+)*[^|]*[(|]\w',
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"use egrep for extended grep syntax"),
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(r'/bin/', "don't use explicit paths for tools"),
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(r'[^\n]\Z', "no trailing newline"),
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(r'export.*=', "don't export and assign at once"),
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(r'^source\b', "don't use 'source', use '.'"),
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(r'touch -d', "don't use 'touch -d', use 'touch -t' instead"),
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(r'ls +[^|\n-]+ +-', "options to 'ls' must come before filenames"),
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(r'[^>\n]>\s*\$HGRCPATH', "don't overwrite $HGRCPATH, append to it"),
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(r'^stop\(\)', "don't use 'stop' as a shell function name"),
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(r'(\[|\btest\b).*-e ', "don't use 'test -e', use 'test -f'"),
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(r'^alias\b.*=', "don't use alias, use a function"),
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(r'if\s*!', "don't use '!' to negate exit status"),
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(r'/dev/u?random', "don't use entropy, use /dev/zero"),
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(r'do\s*true;\s*done', "don't use true as loop body, use sleep 0"),
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(r'^( *)\t', "don't use tabs to indent"),
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(r'sed (-e )?\'(\d+|/[^/]*/)i(?!\\\n)',
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"put a backslash-escaped newline after sed 'i' command"),
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],
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# warnings
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[
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(r'^function', "don't use 'function', use old style"),
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(r'^diff.*-\w*N', "don't use 'diff -N'"),
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(r'\$PWD|\${PWD}', "don't use $PWD, use `pwd`"),
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(r'^([^"\'\n]|("[^"\n]*")|(\'[^\'\n]*\'))*\^', "^ must be quoted"),
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(r'kill (`|\$\()', "don't use kill, use killdaemons.py")
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]
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]
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testfilters = [
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(r"( *)(#([^\n]*\S)?)", repcomment),
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(r"<<(\S+)((.|\n)*?\n\1)", rephere),
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]
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winglobmsg = "use (glob) to match Windows paths too"
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uprefix = r"^ \$ "
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utestpats = [
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[
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(r'^(\S.*|| [$>] .*)[ \t]\n', "trailing whitespace on non-output"),
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(uprefix + r'.*\|\s*sed[^|>\n]*\n',
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"use regex test output patterns instead of sed"),
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(uprefix + r'(true|exit 0)', "explicit zero exit unnecessary"),
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(uprefix + r'.*(?<!\[)\$\?', "explicit exit code checks unnecessary"),
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(uprefix + r'.*\|\| echo.*(fail|error)',
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"explicit exit code checks unnecessary"),
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(uprefix + r'set -e', "don't use set -e"),
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(uprefix + r'(\s|fi\b|done\b)', "use > for continued lines"),
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(r'^ saved backup bundle to \$TESTTMP.*\.hg$', winglobmsg),
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(r'^ changeset .* references (corrupted|missing) \$TESTTMP/.*[^)]$',
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winglobmsg),
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(r'^ pulling from \$TESTTMP/.*[^)]$', winglobmsg,
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'\$TESTTMP/unix-repo$'), # in test-issue1802.t which skipped on windows
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(r'^ reverting .*/.*[^)]$', winglobmsg),
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(r'^ cloning subrepo \S+/.*[^)]$', winglobmsg),
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(r'^ pushing to \$TESTTMP/.*[^)]$', winglobmsg),
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(r'^ pushing subrepo \S+/\S+ to.*[^)]$', winglobmsg),
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(r'^ moving \S+/.*[^)]$', winglobmsg),
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(r'^ no changes made to subrepo since.*/.*[^)]$', winglobmsg),
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(r'^ .*: largefile \S+ not available from file:.*/.*[^)]$', winglobmsg),
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],
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# warnings
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[
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(r'^ [^*?/\n]* \(glob\)$',
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"glob match with no glob character (?*/)"),
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]
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]
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for i in [0, 1]:
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for p, m in testpats[i]:
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if p.startswith(r'^'):
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p = r"^ [$>] (%s)" % p[1:]
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else:
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p = r"^ [$>] .*(%s)" % p
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utestpats[i].append((p, m))
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utestfilters = [
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(r"<<(\S+)((.|\n)*?\n > \1)", rephere),
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(r"( *)(#([^\n]*\S)?)", repcomment),
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]
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pypats = [
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[
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(r'^\s*def\s*\w+\s*\(.*,\s*\(',
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"tuple parameter unpacking not available in Python 3+"),
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(r'lambda\s*\(.*,.*\)',
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"tuple parameter unpacking not available in Python 3+"),
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(r'import (.+,[^.]+\.[^.]+|[^.]+\.[^.]+,)',
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'2to3 can\'t always rewrite "import qux, foo.bar", '
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'use "import foo.bar" on its own line instead.'),
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(r'(?<!def)\s+(cmp)\(', "cmp is not available in Python 3+"),
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(r'\breduce\s*\(.*', "reduce is not available in Python 3+"),
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(r'\.has_key\b', "dict.has_key is not available in Python 3+"),
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(r'\s<>\s', '<> operator is not available in Python 3+, use !='),
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(r'^\s*\t', "don't use tabs"),
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(r'\S;\s*\n', "semicolon"),
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(r'[^_]_\((?:"[^"]+"[ \t\n+]*)+%', "don't use % inside _()"),
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(r"[^_]_\((?:'[^']+'[ \t\n+]*)+%", "don't use % inside _()"),
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(r'(\w|\)),\w', "missing whitespace after ,"),
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(r'(\w|\))[+/*\-<>]\w', "missing whitespace in expression"),
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(r'^\s+(\w|\.)+=\w[^,()\n]*$', "missing whitespace in assignment"),
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(r'(\s+)try:\n((?:\n|\1\s.*\n)+?)\1except.*?:\n'
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r'((?:\n|\1\s.*\n)+?)\1finally:', 'no try/except/finally in Python 2.4'),
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(r'(?<!def)(\s+|^|\()next\(.+\)',
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'no next(foo) in Python 2.4 and 2.5, use foo.next() instead'),
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(r'(\s+)try:\n((?:\n|\1\s.*\n)*?)\1\s*yield\b.*?'
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r'((?:\n|\1\s.*\n)+?)\1finally:',
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'no yield inside try/finally in Python 2.4'),
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(r'.{81}', "line too long"),
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(r' x+[xo][\'"]\n\s+[\'"]x', 'string join across lines with no space'),
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(r'[^\n]\Z', "no trailing newline"),
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(r'(\S[ \t]+|^[ \t]+)\n', "trailing whitespace"),
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# (r'^\s+[^_ \n][^_. \n]+_[^_\n]+\s*=',
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# "don't use underbars in identifiers"),
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(r'^\s+(self\.)?[A-za-z][a-z0-9]+[A-Z]\w* = ',
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"don't use camelcase in identifiers"),
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(r'^\s*(if|while|def|class|except|try)\s[^[\n]*:\s*[^\\n]#\s]+',
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"linebreak after :"),
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(r'class\s[^( \n]+:', "old-style class, use class foo(object)"),
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(r'class\s[^( \n]+\(\):',
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"class foo() not available in Python 2.4, use class foo(object)"),
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(r'\b(%s)\(' % '|'.join(keyword.kwlist),
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"Python keyword is not a function"),
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(r',]', "unneeded trailing ',' in list"),
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# (r'class\s[A-Z][^\(]*\((?!Exception)',
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# "don't capitalize non-exception classes"),
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# (r'in range\(', "use xrange"),
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# (r'^\s*print\s+', "avoid using print in core and extensions"),
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(r'[\x80-\xff]', "non-ASCII character literal"),
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(r'("\')\.format\(', "str.format() not available in Python 2.4"),
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(r'^\s*with\s+', "with not available in Python 2.4"),
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(r'\.isdisjoint\(', "set.isdisjoint not available in Python 2.4"),
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(r'^\s*except.* as .*:', "except as not available in Python 2.4"),
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(r'^\s*os\.path\.relpath', "relpath not available in Python 2.4"),
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(r'(?<!def)\s+(any|all|format)\(',
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"any/all/format not available in Python 2.4", 'no-py24'),
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(r'(?<!def)\s+(callable)\(',
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"callable not available in Python 3, use getattr(f, '__call__', None)"),
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(r'if\s.*\selse', "if ... else form not available in Python 2.4"),
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(r'^\s*(%s)\s\s' % '|'.join(keyword.kwlist),
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"gratuitous whitespace after Python keyword"),
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(r'([\(\[][ \t]\S)|(\S[ \t][\)\]])', "gratuitous whitespace in () or []"),
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# (r'\s\s=', "gratuitous whitespace before ="),
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(r'[^>< ](\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\S',
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"missing whitespace around operator"),
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(r'[^>< ](\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\s',
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"missing whitespace around operator"),
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(r'\s(\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\S',
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"missing whitespace around operator"),
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(r'[^^+=*/!<>&| %-](\s=|=\s)[^= ]',
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"wrong whitespace around ="),
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(r'\([^()]*( =[^=]|[^<>!=]= )',
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"no whitespace around = for named parameters"),
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(r'raise Exception', "don't raise generic exceptions"),
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(r'raise [^,(]+, (\([^\)]+\)|[^,\(\)]+)$',
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"don't use old-style two-argument raise, use Exception(message)"),
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(r' is\s+(not\s+)?["\'0-9-]', "object comparison with literal"),
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(r' [=!]=\s+(True|False|None)',
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"comparison with singleton, use 'is' or 'is not' instead"),
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(r'^\s*(while|if) [01]:',
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"use True/False for constant Boolean expression"),
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(r'(?:(?<!def)\s+|\()hasattr',
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'hasattr(foo, bar) is broken, use util.safehasattr(foo, bar) instead'),
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(r'opener\([^)]*\).read\(',
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"use opener.read() instead"),
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(r'BaseException', 'not in Python 2.4, use Exception'),
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(r'os\.path\.relpath', 'os.path.relpath is not in Python 2.5'),
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(r'opener\([^)]*\).write\(',
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"use opener.write() instead"),
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(r'[\s\(](open|file)\([^)]*\)\.read\(',
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"use util.readfile() instead"),
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(r'[\s\(](open|file)\([^)]*\)\.write\(',
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"use util.writefile() instead"),
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(r'^[\s\(]*(open(er)?|file)\([^)]*\)',
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"always assign an opened file to a variable, and close it afterwards"),
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(r'[\s\(](open|file)\([^)]*\)\.',
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"always assign an opened file to a variable, and close it afterwards"),
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(r'(?i)descendent', "the proper spelling is descendAnt"),
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(r'\.debug\(\_', "don't mark debug messages for translation"),
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(r'\.strip\(\)\.split\(\)', "no need to strip before splitting"),
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(r'^\s*except\s*:', "naked except clause", r'#.*re-raises'),
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(r':\n( )*( ){1,3}[^ ]', "must indent 4 spaces"),
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(r'ui\.(status|progress|write|note|warn)\([\'\"]x',
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"missing _() in ui message (use () to hide false-positives)"),
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(r'release\(.*wlock, .*lock\)', "wrong lock release order"),
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],
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# warnings
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[
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(r'(^| )pp +xxxxqq[ \n][^\n]', "add two newlines after '.. note::'"),
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]
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]
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pyfilters = [
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(r"""(?msx)(?P<comment>\#.*?$)|
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((?P<quote>('''|\"\"\"|(?<!')'(?!')|(?<!")"(?!")))
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(?P<text>(([^\\]|\\.)*?))
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(?P=quote))""", reppython),
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]
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txtfilters = []
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txtpats = [
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[
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('\s$', 'trailing whitespace'),
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],
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[]
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]
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cpats = [
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[
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(r'//', "don't use //-style comments"),
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(r'^ ', "don't use spaces to indent"),
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(r'\S\t', "don't use tabs except for indent"),
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(r'(\S[ \t]+|^[ \t]+)\n', "trailing whitespace"),
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(r'.{81}', "line too long"),
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(r'(while|if|do|for)\(', "use space after while/if/do/for"),
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(r'return\(', "return is not a function"),
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(r' ;', "no space before ;"),
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(r'[)][{]', "space between ) and {"),
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(r'\w+\* \w+', "use int *foo, not int* foo"),
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(r'\W\([^\)]+\) \w+', "use (int)foo, not (int) foo"),
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(r'\w+ (\+\+|--)', "use foo++, not foo ++"),
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(r'\w,\w', "missing whitespace after ,"),
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(r'^[^#]\w[+/*]\w', "missing whitespace in expression"),
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(r'^#\s+\w', "use #foo, not # foo"),
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(r'[^\n]\Z', "no trailing newline"),
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(r'^\s*#import\b', "use only #include in standard C code"),
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],
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# warnings
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[]
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]
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cfilters = [
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|
|
(r'(/\*)(((\*(?!/))|[^*])*)\*/', repccomment),
|
|
|
(r'''(?P<quote>(?<!")")(?P<text>([^"]|\\")+)"(?!")''', repquote),
|
|
|
(r'''(#\s*include\s+<)([^>]+)>''', repinclude),
|
|
|
(r'(\()([^)]+\))', repcallspaces),
|
|
|
]
|
|
|
|
|
|
inutilpats = [
|
|
|
[
|
|
|
(r'\bui\.', "don't use ui in util"),
|
|
|
],
|
|
|
# warnings
|
|
|
[]
|
|
|
]
|
|
|
|
|
|
inrevlogpats = [
|
|
|
[
|
|
|
(r'\brepo\.', "don't use repo in revlog"),
|
|
|
],
|
|
|
# warnings
|
|
|
[]
|
|
|
]
|
|
|
|
|
|
checks = [
|
|
|
('python', r'.*\.(py|cgi)$', pyfilters, pypats),
|
|
|
('test script', r'(.*/)?test-[^.~]*$', testfilters, testpats),
|
|
|
('c', r'.*\.[ch]$', cfilters, cpats),
|
|
|
('unified test', r'.*\.t$', utestfilters, utestpats),
|
|
|
('layering violation repo in revlog', r'mercurial/revlog\.py', pyfilters,
|
|
|
inrevlogpats),
|
|
|
('layering violation ui in util', r'mercurial/util\.py', pyfilters,
|
|
|
inutilpats),
|
|
|
('txt', r'.*\.txt$', txtfilters, txtpats),
|
|
|
]
|
|
|
|
|
|
def _preparepats():
|
|
|
for c in checks:
|
|
|
failandwarn = c[-1]
|
|
|
for pats in failandwarn:
|
|
|
for i, pseq in enumerate(pats):
|
|
|
# fix-up regexes for multi-line searches
|
|
|
p = pseq[0]
|
|
|
# \s doesn't match \n
|
|
|
p = re.sub(r'(?<!\\)\\s', r'[ \\t]', p)
|
|
|
# [^...] doesn't match newline
|
|
|
p = re.sub(r'(?<!\\)\[\^', r'[^\\n', p)
|
|
|
|
|
|
pats[i] = (re.compile(p, re.MULTILINE),) + pseq[1:]
|
|
|
filters = c[2]
|
|
|
for i, flt in enumerate(filters):
|
|
|
filters[i] = re.compile(flt[0]), flt[1]
|
|
|
_preparepats()
|
|
|
|
|
|
class norepeatlogger(object):
|
|
|
def __init__(self):
|
|
|
self._lastseen = None
|
|
|
|
|
|
def log(self, fname, lineno, line, msg, blame):
|
|
|
"""print error related a to given line of a given file.
|
|
|
|
|
|
The faulty line will also be printed but only once in the case
|
|
|
of multiple errors.
|
|
|
|
|
|
:fname: filename
|
|
|
:lineno: line number
|
|
|
:line: actual content of the line
|
|
|
:msg: error message
|
|
|
"""
|
|
|
msgid = fname, lineno, line
|
|
|
if msgid != self._lastseen:
|
|
|
if blame:
|
|
|
print "%s:%d (%s):" % (fname, lineno, blame)
|
|
|
else:
|
|
|
print "%s:%d:" % (fname, lineno)
|
|
|
print " > %s" % line
|
|
|
self._lastseen = msgid
|
|
|
print " " + msg
|
|
|
|
|
|
_defaultlogger = norepeatlogger()
|
|
|
|
|
|
def getblame(f):
|
|
|
lines = []
|
|
|
for l in os.popen('hg annotate -un %s' % f):
|
|
|
start, line = l.split(':', 1)
|
|
|
user, rev = start.split()
|
|
|
lines.append((line[1:-1], user, rev))
|
|
|
return lines
|
|
|
|
|
|
def checkfile(f, logfunc=_defaultlogger.log, maxerr=None, warnings=False,
|
|
|
blame=False, debug=False, lineno=True):
|
|
|
"""checks style and portability of a given file
|
|
|
|
|
|
:f: filepath
|
|
|
:logfunc: function used to report error
|
|
|
logfunc(filename, linenumber, linecontent, errormessage)
|
|
|
:maxerr: number of error to display before aborting.
|
|
|
Set to false (default) to report all errors
|
|
|
|
|
|
return True if no error is found, False otherwise.
|
|
|
"""
|
|
|
blamecache = None
|
|
|
result = True
|
|
|
for name, match, filters, pats in checks:
|
|
|
if debug:
|
|
|
print name, f
|
|
|
fc = 0
|
|
|
if not re.match(match, f):
|
|
|
if debug:
|
|
|
print "Skipping %s for %s it doesn't match %s" % (
|
|
|
name, match, f)
|
|
|
continue
|
|
|
try:
|
|
|
fp = open(f)
|
|
|
except IOError, e:
|
|
|
print "Skipping %s, %s" % (f, str(e).split(':', 1)[0])
|
|
|
continue
|
|
|
pre = post = fp.read()
|
|
|
fp.close()
|
|
|
if "no-" "check-code" in pre:
|
|
|
print "Skipping %s it has no-" "check-code" % f
|
|
|
return "Skip" # skip checking this file
|
|
|
for p, r in filters:
|
|
|
post = re.sub(p, r, post)
|
|
|
nerrs = len(pats[0]) # nerr elements are errors
|
|
|
if warnings:
|
|
|
pats = pats[0] + pats[1]
|
|
|
else:
|
|
|
pats = pats[0]
|
|
|
# print post # uncomment to show filtered version
|
|
|
|
|
|
if debug:
|
|
|
print "Checking %s for %s" % (name, f)
|
|
|
|
|
|
prelines = None
|
|
|
errors = []
|
|
|
for i, pat in enumerate(pats):
|
|
|
if len(pat) == 3:
|
|
|
p, msg, ignore = pat
|
|
|
else:
|
|
|
p, msg = pat
|
|
|
ignore = None
|
|
|
if i >= nerrs:
|
|
|
msg = "warning: " + msg
|
|
|
|
|
|
pos = 0
|
|
|
n = 0
|
|
|
for m in p.finditer(post):
|
|
|
if prelines is None:
|
|
|
prelines = pre.splitlines()
|
|
|
postlines = post.splitlines(True)
|
|
|
|
|
|
start = m.start()
|
|
|
while n < len(postlines):
|
|
|
step = len(postlines[n])
|
|
|
if pos + step > start:
|
|
|
break
|
|
|
pos += step
|
|
|
n += 1
|
|
|
l = prelines[n]
|
|
|
|
|
|
if ignore and re.search(ignore, l, re.MULTILINE):
|
|
|
if debug:
|
|
|
print "Skipping %s for %s:%s (ignore pattern)" % (
|
|
|
name, f, n)
|
|
|
continue
|
|
|
bd = ""
|
|
|
if blame:
|
|
|
bd = 'working directory'
|
|
|
if not blamecache:
|
|
|
blamecache = getblame(f)
|
|
|
if n < len(blamecache):
|
|
|
bl, bu, br = blamecache[n]
|
|
|
if bl == l:
|
|
|
bd = '%s@%s' % (bu, br)
|
|
|
|
|
|
errors.append((f, lineno and n + 1, l, msg, bd))
|
|
|
result = False
|
|
|
|
|
|
errors.sort()
|
|
|
for e in errors:
|
|
|
logfunc(*e)
|
|
|
fc += 1
|
|
|
if maxerr and fc >= maxerr:
|
|
|
print " (too many errors, giving up)"
|
|
|
break
|
|
|
|
|
|
return result
|
|
|
|
|
|
if __name__ == "__main__":
|
|
|
parser = optparse.OptionParser("%prog [options] [files]")
|
|
|
parser.add_option("-w", "--warnings", action="store_true",
|
|
|
help="include warning-level checks")
|
|
|
parser.add_option("-p", "--per-file", type="int",
|
|
|
help="max warnings per file")
|
|
|
parser.add_option("-b", "--blame", action="store_true",
|
|
|
help="use annotate to generate blame info")
|
|
|
parser.add_option("", "--debug", action="store_true",
|
|
|
help="show debug information")
|
|
|
parser.add_option("", "--nolineno", action="store_false",
|
|
|
dest='lineno', help="don't show line numbers")
|
|
|
|
|
|
parser.set_defaults(per_file=15, warnings=False, blame=False, debug=False,
|
|
|
lineno=True)
|
|
|
(options, args) = parser.parse_args()
|
|
|
|
|
|
if len(args) == 0:
|
|
|
check = glob.glob("*")
|
|
|
else:
|
|
|
check = args
|
|
|
|
|
|
ret = 0
|
|
|
for f in check:
|
|
|
if not checkfile(f, maxerr=options.per_file, warnings=options.warnings,
|
|
|
blame=options.blame, debug=options.debug,
|
|
|
lineno=options.lineno):
|
|
|
ret = 1
|
|
|
sys.exit(ret)
|
|
|
|
