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view contrib/check-code.py @ 26755:bb0b955d050d
streamclone: support for producing and consuming stream clone bundles
Up to this point, stream clones only existed as a dynamically generated
data format produced and consumed during streaming clones. In order to
support this efficient cloning format with the clone bundles feature, we
need a more formal, on disk representation of the streaming clone data.
This patch introduces a new "bundle" type for streaming clones. Unlike
existing bundles, it does not contain changegroup data. It does,
however, share the same concepts like the 4 byte header which identifies
the type of data that follows and the 2 byte abbreviation for
compression types (of which only "UN" is currently supported).
The new bundle format is essentially the existing stream clone version 1
data format with some headers at the beginning.
Content negotiation at stream clone request time checked for repository
format/requirements compatibility before initiating a stream clone. We
can't do active content negotiation when using clone bundles. So, we put
this set of requirements inside the payload so consumers have a built-in
mechanism for checking compatibility before reading and applying lots of
data. Of course, we will also advertise this requirements set in clone
bundles. But that's for another patch.
We currently don't have a mechanism to produce and consume this new
bundle format. This will be implemented in upcoming patches.
It's worth noting that if a legacy client attempts to `hg unbundle` a
stream clone bundle (with the "HGS1" header), it will abort with:
"unknown bundle version S1," which seems appropriate.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sat, 17 Oct 2015 11:14:52 -0700 |
parents | b3f7516fa50e |
children | df1a29ec45bf |
line wrap: on
line source
#!/usr/bin/env python # # check-code - a style and portability checker for Mercurial # # Copyright 2010 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. """style and portability checker for Mercurial when a rule triggers wrong, do one of the following (prefer one from top): * do the work-around the rule suggests * doublecheck that it is a false match * improve the rule pattern * add an ignore pattern to the rule (3rd arg) which matches your good line (you can append a short comment and match this, like: #re-raises, # no-py24) * change the pattern to a warning and list the exception in test-check-code-hg * ONLY use no--check-code for skipping entire files from external sources """ import re, glob, os, sys import keyword import optparse try: import re2 except ImportError: re2 = None def compilere(pat, multiline=False): if multiline: pat = '(?m)' + pat if re2: try: return re2.compile(pat) except re2.error: pass return re.compile(pat) def repquote(m): fromc = '.:' tochr = 'pq' def encodechr(i): if i > 255: return 'u' c = chr(i) if c in ' \n': return c if c.isalpha(): return 'x' if c.isdigit(): return 'n' try: return tochr[fromc.find(c)] except (ValueError, IndexError): return 'o' t = m.group('text') tt = ''.join(encodechr(i) for i in xrange(256)) t = t.translate(tt) return m.group('quote') + t + m.group('quote') def reppython(m): comment = m.group('comment') if comment: l = len(comment.rstrip()) return "#" * l + comment[l:] return repquote(m) def repcomment(m): return m.group(1) + "#" * len(m.group(2)) def repccomment(m): t = re.sub(r"((?<=\n) )|\S", "x", m.group(2)) return m.group(1) + t + "*/" def repcallspaces(m): t = re.sub(r"\n\s+", "\n", m.group(2)) return m.group(1) + t def repinclude(m): return m.group(1) + "<foo>" def rephere(m): t = re.sub(r"\S", "x", m.group(2)) return m.group(1) + t testpats = [ [ (r'pushd|popd', "don't use 'pushd' or 'popd', use 'cd'"), (r'\W\$?\(\([^\)\n]*\)\)', "don't use (()) or $(()), use 'expr'"), (r'grep.*-q', "don't use 'grep -q', redirect to /dev/null"), (r'(?<!hg )grep.*-a', "don't use 'grep -a', use in-line python"), (r'sed.*-i', "don't use 'sed -i', use a temporary file"), (r'\becho\b.*\\n', "don't use 'echo \\n', use printf"), (r'echo -n', "don't use 'echo -n', use printf"), (r'(^|\|\s*)\bwc\b[^|]*$\n(?!.*\(re\))', "filter wc output"), (r'head -c', "don't use 'head -c', use 'dd'"), (r'tail -n', "don't use the '-n' option to tail, just use '-<num>'"), (r'sha1sum', "don't use sha1sum, use $TESTDIR/md5sum.py"), (r'ls.*-\w*R', "don't use 'ls -R', use 'find'"), (r'printf.*[^\\]\\([1-9]|0\d)', "don't use 'printf \NNN', use Python"), (r'printf.*[^\\]\\x', "don't use printf \\x, use Python"), (r'\$\(.*\)', "don't use $(expr), use `expr`"), (r'rm -rf \*', "don't use naked rm -rf, target a directory"), (r'(^|\|\s*)grep (-\w\s+)*[^|]*[(|]\w', "use egrep for extended grep syntax"), (r'/bin/', "don't use explicit paths for tools"), (r'[^\n]\Z', "no trailing newline"), (r'export.*=', "don't export and assign at once"), (r'^source\b', "don't use 'source', use '.'"), (r'touch -d', "don't use 'touch -d', use 'touch -t' instead"), (r'ls +[^|\n-]+ +-', "options to 'ls' must come before filenames"), (r'[^>\n]>\s*\$HGRCPATH', "don't overwrite $HGRCPATH, append to it"), (r'^stop\(\)', "don't use 'stop' as a shell function name"), (r'(\[|\btest\b).*-e ', "don't use 'test -e', use 'test -f'"), (r'\[\[\s+[^\]]*\]\]', "don't use '[[ ]]', use '[ ]'"), (r'^alias\b.*=', "don't use alias, use a function"), (r'if\s*!', "don't use '!' to negate exit status"), (r'/dev/u?random', "don't use entropy, use /dev/zero"), (r'do\s*true;\s*done', "don't use true as loop body, use sleep 0"), (r'^( *)\t', "don't use tabs to indent"), (r'sed (-e )?\'(\d+|/[^/]*/)i(?!\\\n)', "put a backslash-escaped newline after sed 'i' command"), (r'^diff *-\w*u.*$\n(^ \$ |^$)', "prefix diff -u with cmp"), (r'seq ', "don't use 'seq', use $TESTDIR/seq.py"), (r'\butil\.Abort\b', "directly use error.Abort"), ], # warnings [ (r'^function', "don't use 'function', use old style"), (r'^diff.*-\w*N', "don't use 'diff -N'"), (r'\$PWD|\${PWD}', "don't use $PWD, use `pwd`"), (r'^([^"\'\n]|("[^"\n]*")|(\'[^\'\n]*\'))*\^', "^ must be quoted"), (r'kill (`|\$\()', "don't use kill, use killdaemons.py") ] ] testfilters = [ (r"( *)(#([^\n]*\S)?)", repcomment), (r"<<(\S+)((.|\n)*?\n\1)", rephere), ] winglobmsg = "use (glob) to match Windows paths too" uprefix = r"^ \$ " utestpats = [ [ (r'^(\S.*|| [$>] .*)[ \t]\n', "trailing whitespace on non-output"), (uprefix + r'.*\|\s*sed[^|>\n]*\n', "use regex test output patterns instead of sed"), (uprefix + r'(true|exit 0)', "explicit zero exit unnecessary"), (uprefix + r'.*(?<!\[)\$\?', "explicit exit code checks unnecessary"), (uprefix + r'.*\|\| echo.*(fail|error)', "explicit exit code checks unnecessary"), (uprefix + r'set -e', "don't use set -e"), (uprefix + r'(\s|fi\b|done\b)', "use > for continued lines"), (uprefix + r'.*:\.\S*/', "x:.y in a path does not work on msys, rewrite " "as x://.y, or see `hg log -k msys` for alternatives", r'-\S+:\.|' #-Rxxx '# no-msys'), # in test-pull.t which is skipped on windows (r'^ saved backup bundle to \$TESTTMP.*\.hg$', winglobmsg), (r'^ changeset .* references (corrupted|missing) \$TESTTMP/.*[^)]$', winglobmsg), (r'^ pulling from \$TESTTMP/.*[^)]$', winglobmsg, '\$TESTTMP/unix-repo$'), # in test-issue1802.t which skipped on windows (r'^ reverting (?!subrepo ).*/.*[^)]$', winglobmsg), (r'^ cloning subrepo \S+/.*[^)]$', winglobmsg), (r'^ pushing to \$TESTTMP/.*[^)]$', winglobmsg), (r'^ pushing subrepo \S+/\S+ to.*[^)]$', winglobmsg), (r'^ moving \S+/.*[^)]$', winglobmsg), (r'^ no changes made to subrepo since.*/.*[^)]$', winglobmsg), (r'^ .*: largefile \S+ not available from file:.*/.*[^)]$', winglobmsg), (r'^ .*file://\$TESTTMP', 'write "file:/*/$TESTTMP" + (glob) to match on windows too'), (r'^ (cat|find): .*: No such file or directory', 'use test -f to test for file existence'), ], # warnings [ (r'^ [^*?/\n]* \(glob\)$', "glob match with no glob character (?*/)"), ] ] for i in [0, 1]: for tp in testpats[i]: p = tp[0] m = tp[1] if p.startswith(r'^'): p = r"^ [$>] (%s)" % p[1:] else: p = r"^ [$>] .*(%s)" % p utestpats[i].append((p, m) + tp[2:]) utestfilters = [ (r"<<(\S+)((.|\n)*?\n > \1)", rephere), (r"( *)(#([^\n]*\S)?)", repcomment), ] pypats = [ [ (r'\([^)]*\*\w[^()]+\w+=', "can't pass varargs with keyword in Py2.5"), (r'^\s*def\s*\w+\s*\(.*,\s*\(', "tuple parameter unpacking not available in Python 3+"), (r'lambda\s*\(.*,.*\)', "tuple parameter unpacking not available in Python 3+"), (r'import (.+,[^.]+\.[^.]+|[^.]+\.[^.]+,)', '2to3 can\'t always rewrite "import qux, foo.bar", ' 'use "import foo.bar" on its own line instead.'), (r'(?<!def)\s+(cmp)\(', "cmp is not available in Python 3+"), (r'\breduce\s*\(.*', "reduce is not available in Python 3+"), (r'dict\(.*=', 'dict() is different in Py2 and 3 and is slower than {}', 'dict-from-generator'), (r'\.has_key\b', "dict.has_key is not available in Python 3+"), (r'\s<>\s', '<> operator is not available in Python 3+, use !='), (r'^\s*\t', "don't use tabs"), (r'\S;\s*\n', "semicolon"), (r'[^_]_\([ \t\n]*(?:"[^"]+"[ \t\n+]*)+%', "don't use % inside _()"), (r"[^_]_\([ \t\n]*(?:'[^']+'[ \t\n+]*)+%", "don't use % inside _()"), (r'(\w|\)),\w', "missing whitespace after ,"), (r'(\w|\))[+/*\-<>]\w', "missing whitespace in expression"), (r'^\s+(\w|\.)+=\w[^,()\n]*$', "missing whitespace in assignment"), (r'.{81}', "line too long"), (r' x+[xo][\'"]\n\s+[\'"]x', 'string join across lines with no space'), (r'[^\n]\Z', "no trailing newline"), (r'(\S[ \t]+|^[ \t]+)\n', "trailing whitespace"), # (r'^\s+[^_ \n][^_. \n]+_[^_\n]+\s*=', # "don't use underbars in identifiers"), (r'^\s+(self\.)?[A-za-z][a-z0-9]+[A-Z]\w* = ', "don't use camelcase in identifiers"), (r'^\s*(if|while|def|class|except|try)\s[^[\n]*:\s*[^\\n]#\s]+', "linebreak after :"), (r'class\s[^( \n]+:', "old-style class, use class foo(object)"), (r'class\s[^( \n]+\(\):', "class foo() creates old style object, use class foo(object)"), (r'\b(%s)\(' % '|'.join(k for k in keyword.kwlist if k not in ('print', 'exec')), "Python keyword is not a function"), (r',]', "unneeded trailing ',' in list"), # (r'class\s[A-Z][^\(]*\((?!Exception)', # "don't capitalize non-exception classes"), # (r'in range\(', "use xrange"), # (r'^\s*print\s+', "avoid using print in core and extensions"), (r'[\x80-\xff]', "non-ASCII character literal"), (r'("\')\.format\(', "str.format() has no bytes counterpart, use %"), (r'^\s*(%s)\s\s' % '|'.join(keyword.kwlist), "gratuitous whitespace after Python keyword"), (r'([\(\[][ \t]\S)|(\S[ \t][\)\]])', "gratuitous whitespace in () or []"), # (r'\s\s=', "gratuitous whitespace before ="), (r'[^>< ](\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\S', "missing whitespace around operator"), (r'[^>< ](\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\s', "missing whitespace around operator"), (r'\s(\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\S', "missing whitespace around operator"), (r'[^^+=*/!<>&| %-](\s=|=\s)[^= ]', "wrong whitespace around ="), (r'\([^()]*( =[^=]|[^<>!=]= )', "no whitespace around = for named parameters"), (r'raise Exception', "don't raise generic exceptions"), (r'raise [^,(]+, (\([^\)]+\)|[^,\(\)]+)$', "don't use old-style two-argument raise, use Exception(message)"), (r' is\s+(not\s+)?["\'0-9-]', "object comparison with literal"), (r' [=!]=\s+(True|False|None)', "comparison with singleton, use 'is' or 'is not' instead"), (r'^\s*(while|if) [01]:', "use True/False for constant Boolean expression"), (r'(?:(?<!def)\s+|\()hasattr', 'hasattr(foo, bar) is broken, use util.safehasattr(foo, bar) instead'), (r'opener\([^)]*\).read\(', "use opener.read() instead"), (r'opener\([^)]*\).write\(', "use opener.write() instead"), (r'[\s\(](open|file)\([^)]*\)\.read\(', "use util.readfile() instead"), (r'[\s\(](open|file)\([^)]*\)\.write\(', "use util.writefile() instead"), (r'^[\s\(]*(open(er)?|file)\([^)]*\)', "always assign an opened file to a variable, and close it afterwards"), (r'[\s\(](open|file)\([^)]*\)\.', "always assign an opened file to a variable, and close it afterwards"), (r'(?i)descend[e]nt', "the proper spelling is descendAnt"), (r'\.debug\(\_', "don't mark debug messages for translation"), (r'\.strip\(\)\.split\(\)', "no need to strip before splitting"), (r'^\s*except\s*:', "naked except clause", r'#.*re-raises'), (r'^\s*except\s([^\(,]+|\([^\)]+\))\s*,', 'legacy exception syntax; use "as" instead of ","'), (r':\n( )*( ){1,3}[^ ]', "must indent 4 spaces"), (r'ui\.(status|progress|write|note|warn)\([\'\"]x', "missing _() in ui message (use () to hide false-positives)"), (r'release\(.*wlock, .*lock\)', "wrong lock release order"), (r'\b__bool__\b', "__bool__ should be __nonzero__ in Python 2"), (r'os\.path\.join\(.*, *(""|\'\')\)', "use pathutil.normasprefix(path) instead of os.path.join(path, '')"), (r'\s0[0-7]+\b', 'legacy octal syntax; use "0o" prefix instead of "0"'), # XXX only catch mutable arguments on the first line of the definition (r'def.*[( ]\w+=\{\}', "don't use mutable default arguments"), (r'\butil\.Abort\b', "directly use error.Abort"), ], # warnings [ (r'(^| )pp +xxxxqq[ \n][^\n]', "add two newlines after '.. note::'"), ] ] pyfilters = [ (r"""(?msx)(?P<comment>\#.*?$)| ((?P<quote>('''|\"\"\"|(?<!')'(?!')|(?<!")"(?!"))) (?P<text>(([^\\]|\\.)*?)) (?P=quote))""", reppython), ] txtfilters = [] txtpats = [ [ ('\s$', 'trailing whitespace'), ('.. note::[ \n][^\n]', 'add two newlines after note::') ], [] ] cpats = [ [ (r'//', "don't use //-style comments"), (r'^ ', "don't use spaces to indent"), (r'\S\t', "don't use tabs except for indent"), (r'(\S[ \t]+|^[ \t]+)\n', "trailing whitespace"), (r'.{81}', "line too long"), (r'(while|if|do|for)\(', "use space after while/if/do/for"), (r'return\(', "return is not a function"), (r' ;', "no space before ;"), (r'[^;] \)', "no space before )"), (r'[)][{]', "space between ) and {"), (r'\w+\* \w+', "use int *foo, not int* foo"), (r'\W\([^\)]+\) \w+', "use (int)foo, not (int) foo"), (r'\w+ (\+\+|--)', "use foo++, not foo ++"), (r'\w,\w', "missing whitespace after ,"), (r'^[^#]\w[+/*]\w', "missing whitespace in expression"), (r'^#\s+\w', "use #foo, not # foo"), (r'[^\n]\Z', "no trailing newline"), (r'^\s*#import\b', "use only #include in standard C code"), ], # warnings [] ] cfilters = [ (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 [] ] webtemplatefilters = [] webtemplatepats = [ [], [ (r'{desc(\|(?!websub|firstline)[^\|]*)+}', 'follow desc keyword with either firstline or websub'), ] ] checks = [ ('python', r'.*\.(py|cgi)$', r'^#!.*python', pyfilters, pypats), ('test script', r'(.*/)?test-[^.~]*$', '', 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), ('web template', r'mercurial/templates/.*\.tmpl', '', webtemplatefilters, webtemplatepats), ] 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[3] 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 try: fp = open(f) except IOError as e: print "Skipping %s, %s" % (f, str(e).split(':', 1)[0]) return result pre = post = fp.read() fp.close() for name, match, magic, filters, pats in checks: if debug: print name, f fc = 0 if not (re.match(match, f) or (magic and re.search(magic, f))): if debug: print "Skipping %s for %s it doesn't match %s" % ( name, match, f) continue 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)