# util.py - Mercurial utility functions and platform specfic implementations # # Copyright 2005 K. Thananchayan # Copyright 2005-2007 Matt Mackall # Copyright 2006 Vadim Gelfer # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. """Mercurial utility functions and platform specfic implementations. This contains helper routines that are independent of the SCM core and hide platform-specific details from the core. """ from i18n import _ import error, osutil, encoding, collections import errno, re, shutil, sys, tempfile, traceback import os, time, datetime, calendar, textwrap, signal import imp, socket, urllib if os.name == 'nt': import windows as platform else: import posix as platform cachestat = platform.cachestat checkexec = platform.checkexec checklink = platform.checklink copymode = platform.copymode executablepath = platform.executablepath expandglobs = platform.expandglobs explainexit = platform.explainexit findexe = platform.findexe gethgcmd = platform.gethgcmd getuser = platform.getuser groupmembers = platform.groupmembers groupname = platform.groupname hidewindow = platform.hidewindow isexec = platform.isexec isowner = platform.isowner localpath = platform.localpath lookupreg = platform.lookupreg makedir = platform.makedir nlinks = platform.nlinks normpath = platform.normpath normcase = platform.normcase nulldev = platform.nulldev openhardlinks = platform.openhardlinks oslink = platform.oslink parsepatchoutput = platform.parsepatchoutput pconvert = platform.pconvert popen = platform.popen posixfile = platform.posixfile quotecommand = platform.quotecommand realpath = platform.realpath rename = platform.rename samedevice = platform.samedevice samefile = platform.samefile samestat = platform.samestat setbinary = platform.setbinary setflags = platform.setflags setsignalhandler = platform.setsignalhandler shellquote = platform.shellquote spawndetached = platform.spawndetached sshargs = platform.sshargs statfiles = platform.statfiles termwidth = platform.termwidth testpid = platform.testpid umask = platform.umask unlink = platform.unlink unlinkpath = platform.unlinkpath username = platform.username # Python compatibility _notset = object() def safehasattr(thing, attr): return getattr(thing, attr, _notset) is not _notset def sha1(s=''): ''' Low-overhead wrapper around Python's SHA support >>> f = _fastsha1 >>> a = sha1() >>> a = f() >>> a.hexdigest() 'da39a3ee5e6b4b0d3255bfef95601890afd80709' ''' return _fastsha1(s) def _fastsha1(s=''): # This function will import sha1 from hashlib or sha (whichever is # available) and overwrite itself with it on the first call. # Subsequent calls will go directly to the imported function. if sys.version_info >= (2, 5): from hashlib import sha1 as _sha1 else: from sha import sha as _sha1 global _fastsha1, sha1 _fastsha1 = sha1 = _sha1 return _sha1(s) try: buffer = buffer except NameError: if sys.version_info[0] < 3: def buffer(sliceable, offset=0): return sliceable[offset:] else: def buffer(sliceable, offset=0): return memoryview(sliceable)[offset:] import subprocess closefds = os.name == 'posix' def popen2(cmd, env=None, newlines=False): # Setting bufsize to -1 lets the system decide the buffer size. # The default for bufsize is 0, meaning unbuffered. This leads to # poor performance on Mac OS X: http://bugs.python.org/issue4194 p = subprocess.Popen(cmd, shell=True, bufsize=-1, close_fds=closefds, stdin=subprocess.PIPE, stdout=subprocess.PIPE, universal_newlines=newlines, env=env) return p.stdin, p.stdout def popen3(cmd, env=None, newlines=False): p = subprocess.Popen(cmd, shell=True, bufsize=-1, close_fds=closefds, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=newlines, env=env) return p.stdin, p.stdout, p.stderr def version(): """Return version information if available.""" try: import __version__ return __version__.version except ImportError: return 'unknown' # used by parsedate defaultdateformats = ( '%Y-%m-%d %H:%M:%S', '%Y-%m-%d %I:%M:%S%p', '%Y-%m-%d %H:%M', '%Y-%m-%d %I:%M%p', '%Y-%m-%d', '%m-%d', '%m/%d', '%m/%d/%y', '%m/%d/%Y', '%a %b %d %H:%M:%S %Y', '%a %b %d %I:%M:%S%p %Y', '%a, %d %b %Y %H:%M:%S', # GNU coreutils "/bin/date --rfc-2822" '%b %d %H:%M:%S %Y', '%b %d %I:%M:%S%p %Y', '%b %d %H:%M:%S', '%b %d %I:%M:%S%p', '%b %d %H:%M', '%b %d %I:%M%p', '%b %d %Y', '%b %d', '%H:%M:%S', '%I:%M:%S%p', '%H:%M', '%I:%M%p', ) extendeddateformats = defaultdateformats + ( "%Y", "%Y-%m", "%b", "%b %Y", ) def cachefunc(func): '''cache the result of function calls''' # XXX doesn't handle keywords args cache = {} if func.func_code.co_argcount == 1: # we gain a small amount of time because # we don't need to pack/unpack the list def f(arg): if arg not in cache: cache[arg] = func(arg) return cache[arg] else: def f(*args): if args not in cache: cache[args] = func(*args) return cache[args] return f try: collections.deque.remove deque = collections.deque except AttributeError: # python 2.4 lacks deque.remove class deque(collections.deque): def remove(self, val): for i, v in enumerate(self): if v == val: del self[i] break def lrucachefunc(func): '''cache most recent results of function calls''' cache = {} order = deque() if func.func_code.co_argcount == 1: def f(arg): if arg not in cache: if len(cache) > 20: del cache[order.popleft()] cache[arg] = func(arg) else: order.remove(arg) order.append(arg) return cache[arg] else: def f(*args): if args not in cache: if len(cache) > 20: del cache[order.popleft()] cache[args] = func(*args) else: order.remove(args) order.append(args) return cache[args] return f class propertycache(object): def __init__(self, func): self.func = func self.name = func.__name__ def __get__(self, obj, type=None): result = self.func(obj) setattr(obj, self.name, result) return result def pipefilter(s, cmd): '''filter string S through command CMD, returning its output''' p = subprocess.Popen(cmd, shell=True, close_fds=closefds, stdin=subprocess.PIPE, stdout=subprocess.PIPE) pout, perr = p.communicate(s) return pout def tempfilter(s, cmd): '''filter string S through a pair of temporary files with CMD. CMD is used as a template to create the real command to be run, with the strings INFILE and OUTFILE replaced by the real names of the temporary files generated.''' inname, outname = None, None try: infd, inname = tempfile.mkstemp(prefix='hg-filter-in-') fp = os.fdopen(infd, 'wb') fp.write(s) fp.close() outfd, outname = tempfile.mkstemp(prefix='hg-filter-out-') os.close(outfd) cmd = cmd.replace('INFILE', inname) cmd = cmd.replace('OUTFILE', outname) code = os.system(cmd) if sys.platform == 'OpenVMS' and code & 1: code = 0 if code: raise Abort(_("command '%s' failed: %s") % (cmd, explainexit(code))) fp = open(outname, 'rb') r = fp.read() fp.close() return r finally: try: if inname: os.unlink(inname) except OSError: pass try: if outname: os.unlink(outname) except OSError: pass filtertable = { 'tempfile:': tempfilter, 'pipe:': pipefilter, } def filter(s, cmd): "filter a string through a command that transforms its input to its output" for name, fn in filtertable.iteritems(): if cmd.startswith(name): return fn(s, cmd[len(name):].lstrip()) return pipefilter(s, cmd) def binary(s): """return true if a string is binary data""" return bool(s and '\0' in s) def increasingchunks(source, min=1024, max=65536): '''return no less than min bytes per chunk while data remains, doubling min after each chunk until it reaches max''' def log2(x): if not x: return 0 i = 0 while x: x >>= 1 i += 1 return i - 1 buf = [] blen = 0 for chunk in source: buf.append(chunk) blen += len(chunk) if blen >= min: if min < max: min = min << 1 nmin = 1 << log2(blen) if nmin > min: min = nmin if min > max: min = max yield ''.join(buf) blen = 0 buf = [] if buf: yield ''.join(buf) Abort = error.Abort def always(fn): return True def never(fn): return False def pathto(root, n1, n2): '''return the relative path from one place to another. root should use os.sep to separate directories n1 should use os.sep to separate directories n2 should use "/" to separate directories returns an os.sep-separated path. If n1 is a relative path, it's assumed it's relative to root. n2 should always be relative to root. ''' if not n1: return localpath(n2) if os.path.isabs(n1): if os.path.splitdrive(root)[0] != os.path.splitdrive(n1)[0]: return os.path.join(root, localpath(n2)) n2 = '/'.join((pconvert(root), n2)) a, b = splitpath(n1), n2.split('/') a.reverse() b.reverse() while a and b and a[-1] == b[-1]: a.pop() b.pop() b.reverse() return os.sep.join((['..'] * len(a)) + b) or '.' _hgexecutable = None def mainfrozen(): """return True if we are a frozen executable. The code supports py2exe (most common, Windows only) and tools/freeze (portable, not much used). """ return (safehasattr(sys, "frozen") or # new py2exe safehasattr(sys, "importers") or # old py2exe imp.is_frozen("__main__")) # tools/freeze def hgexecutable(): """return location of the 'hg' executable. Defaults to $HG or 'hg' in the search path. """ if _hgexecutable is None: hg = os.environ.get('HG') mainmod = sys.modules['__main__'] if hg: _sethgexecutable(hg) elif mainfrozen(): _sethgexecutable(sys.executable) elif os.path.basename(getattr(mainmod, '__file__', '')) == 'hg': _sethgexecutable(mainmod.__file__) else: exe = findexe('hg') or os.path.basename(sys.argv[0]) _sethgexecutable(exe) return _hgexecutable def _sethgexecutable(path): """set location of the 'hg' executable""" global _hgexecutable _hgexecutable = path def system(cmd, environ={}, cwd=None, onerr=None, errprefix=None, out=None): '''enhanced shell command execution. run with environment maybe modified, maybe in different dir. if command fails and onerr is None, return status. if ui object, print error message and return status, else raise onerr object as exception. if out is specified, it is assumed to be a file-like object that has a write() method. stdout and stderr will be redirected to out.''' try: sys.stdout.flush() except Exception: pass def py2shell(val): 'convert python object into string that is useful to shell' if val is None or val is False: return '0' if val is True: return '1' return str(val) origcmd = cmd cmd = quotecommand(cmd) if sys.platform == 'plan9': # subprocess kludge to work around issues in half-baked Python # ports, notably bichued/python: if not cwd is None: os.chdir(cwd) rc = os.system(cmd) else: env = dict(os.environ) env.update((k, py2shell(v)) for k, v in environ.iteritems()) env['HG'] = hgexecutable() if out is None or out == sys.__stdout__: rc = subprocess.call(cmd, shell=True, close_fds=closefds, env=env, cwd=cwd) else: proc = subprocess.Popen(cmd, shell=True, close_fds=closefds, env=env, cwd=cwd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) for line in proc.stdout: out.write(line) proc.wait() rc = proc.returncode if sys.platform == 'OpenVMS' and rc & 1: rc = 0 if rc and onerr: errmsg = '%s %s' % (os.path.basename(origcmd.split(None, 1)[0]), explainexit(rc)[0]) if errprefix: errmsg = '%s: %s' % (errprefix, errmsg) try: onerr.warn(errmsg + '\n') except AttributeError: raise onerr(errmsg) return rc def checksignature(func): '''wrap a function with code to check for calling errors''' def check(*args, **kwargs): try: return func(*args, **kwargs) except TypeError: if len(traceback.extract_tb(sys.exc_info()[2])) == 1: raise error.SignatureError raise return check def copyfile(src, dest): "copy a file, preserving mode and atime/mtime" if os.path.islink(src): try: os.unlink(dest) except OSError: pass os.symlink(os.readlink(src), dest) else: try: shutil.copyfile(src, dest) shutil.copymode(src, dest) except shutil.Error, inst: raise Abort(str(inst)) def copyfiles(src, dst, hardlink=None): """Copy a directory tree using hardlinks if possible""" if hardlink is None: hardlink = (os.stat(src).st_dev == os.stat(os.path.dirname(dst)).st_dev) num = 0 if os.path.isdir(src): os.mkdir(dst) for name, kind in osutil.listdir(src): srcname = os.path.join(src, name) dstname = os.path.join(dst, name) hardlink, n = copyfiles(srcname, dstname, hardlink) num += n else: if hardlink: try: oslink(src, dst) except (IOError, OSError): hardlink = False shutil.copy(src, dst) else: shutil.copy(src, dst) num += 1 return hardlink, num _winreservednames = '''con prn aux nul com1 com2 com3 com4 com5 com6 com7 com8 com9 lpt1 lpt2 lpt3 lpt4 lpt5 lpt6 lpt7 lpt8 lpt9'''.split() _winreservedchars = ':*?"<>|' def checkwinfilename(path): '''Check that the base-relative path is a valid filename on Windows. Returns None if the path is ok, or a UI string describing the problem. >>> checkwinfilename("just/a/normal/path") >>> checkwinfilename("foo/bar/con.xml") "filename contains 'con', which is reserved on Windows" >>> checkwinfilename("foo/con.xml/bar") "filename contains 'con', which is reserved on Windows" >>> checkwinfilename("foo/bar/xml.con") >>> checkwinfilename("foo/bar/AUX/bla.txt") "filename contains 'AUX', which is reserved on Windows" >>> checkwinfilename("foo/bar/bla:.txt") "filename contains ':', which is reserved on Windows" >>> checkwinfilename("foo/bar/b\07la.txt") "filename contains '\\\\x07', which is invalid on Windows" >>> checkwinfilename("foo/bar/bla ") "filename ends with ' ', which is not allowed on Windows" >>> checkwinfilename("../bar") ''' for n in path.replace('\\', '/').split('/'): if not n: continue for c in n: if c in _winreservedchars: return _("filename contains '%s', which is reserved " "on Windows") % c if ord(c) <= 31: return _("filename contains %r, which is invalid " "on Windows") % c base = n.split('.')[0] if base and base.lower() in _winreservednames: return _("filename contains '%s', which is reserved " "on Windows") % base t = n[-1] if t in '. ' and n not in '..': return _("filename ends with '%s', which is not allowed " "on Windows") % t if os.name == 'nt': checkosfilename = checkwinfilename else: checkosfilename = platform.checkosfilename def makelock(info, pathname): try: return os.symlink(info, pathname) except OSError, why: if why.errno == errno.EEXIST: raise except AttributeError: # no symlink in os pass ld = os.open(pathname, os.O_CREAT | os.O_WRONLY | os.O_EXCL) os.write(ld, info) os.close(ld) def readlock(pathname): try: return os.readlink(pathname) except OSError, why: if why.errno not in (errno.EINVAL, errno.ENOSYS): raise except AttributeError: # no symlink in os pass fp = posixfile(pathname) r = fp.read() fp.close() return r def fstat(fp): '''stat file object that may not have fileno method.''' try: return os.fstat(fp.fileno()) except AttributeError: return os.stat(fp.name) # File system features def checkcase(path): """ Check whether the given path is on a case-sensitive filesystem Requires a path (like /foo/.hg) ending with a foldable final directory component. """ s1 = os.stat(path) d, b = os.path.split(path) b2 = b.upper() if b == b2: b2 = b.lower() if b == b2: return True # no evidence against case sensitivity p2 = os.path.join(d, b2) try: s2 = os.stat(p2) if s2 == s1: return False return True except OSError: return True try: import re2 _re2 = None except ImportError: _re2 = False def compilere(pat): '''Compile a regular expression, using re2 if possible For best performance, use only re2-compatible regexp features.''' global _re2 if _re2 is None: try: re2.compile _re2 = True except ImportError: _re2 = False if _re2: try: return re2.compile(pat) except re2.error: pass return re.compile(pat) _fspathcache = {} def fspath(name, root): '''Get name in the case stored in the filesystem The name should be relative to root, and be normcase-ed for efficiency. Note that this function is unnecessary, and should not be called, for case-sensitive filesystems (simply because it's expensive). The root should be normcase-ed, too. ''' def find(p, contents): for n in contents: if normcase(n) == p: return n return None seps = os.sep if os.altsep: seps = seps + os.altsep # Protect backslashes. This gets silly very quickly. seps.replace('\\','\\\\') pattern = re.compile(r'([^%s]+)|([%s]+)' % (seps, seps)) dir = os.path.normpath(root) result = [] for part, sep in pattern.findall(name): if sep: result.append(sep) continue if dir not in _fspathcache: _fspathcache[dir] = os.listdir(dir) contents = _fspathcache[dir] found = find(part, contents) if not found: # retry "once per directory" per "dirstate.walk" which # may take place for each patches of "hg qpush", for example contents = os.listdir(dir) _fspathcache[dir] = contents found = find(part, contents) result.append(found or part) dir = os.path.join(dir, part) return ''.join(result) def checknlink(testfile): '''check whether hardlink count reporting works properly''' # testfile may be open, so we need a separate file for checking to # work around issue2543 (or testfile may get lost on Samba shares) f1 = testfile + ".hgtmp1" if os.path.lexists(f1): return False try: posixfile(f1, 'w').close() except IOError: return False f2 = testfile + ".hgtmp2" fd = None try: try: oslink(f1, f2) except OSError: return False # nlinks() may behave differently for files on Windows shares if # the file is open. fd = posixfile(f2) return nlinks(f2) > 1 finally: if fd is not None: fd.close() for f in (f1, f2): try: os.unlink(f) except OSError: pass return False def endswithsep(path): '''Check path ends with os.sep or os.altsep.''' return path.endswith(os.sep) or os.altsep and path.endswith(os.altsep) def splitpath(path): '''Split path by os.sep. Note that this function does not use os.altsep because this is an alternative of simple "xxx.split(os.sep)". It is recommended to use os.path.normpath() before using this function if need.''' return path.split(os.sep) def gui(): '''Are we running in a GUI?''' if sys.platform == 'darwin': if 'SSH_CONNECTION' in os.environ: # handle SSH access to a box where the user is logged in return False elif getattr(osutil, 'isgui', None): # check if a CoreGraphics session is available return osutil.isgui() else: # pure build; use a safe default return True else: return os.name == "nt" or os.environ.get("DISPLAY") def mktempcopy(name, emptyok=False, createmode=None): """Create a temporary file with the same contents from name The permission bits are copied from the original file. If the temporary file is going to be truncated immediately, you can use emptyok=True as an optimization. Returns the name of the temporary file. """ d, fn = os.path.split(name) fd, temp = tempfile.mkstemp(prefix='.%s-' % fn, dir=d) os.close(fd) # Temporary files are created with mode 0600, which is usually not # what we want. If the original file already exists, just copy # its mode. Otherwise, manually obey umask. copymode(name, temp, createmode) if emptyok: return temp try: try: ifp = posixfile(name, "rb") except IOError, inst: if inst.errno == errno.ENOENT: return temp if not getattr(inst, 'filename', None): inst.filename = name raise ofp = posixfile(temp, "wb") for chunk in filechunkiter(ifp): ofp.write(chunk) ifp.close() ofp.close() except: # re-raises try: os.unlink(temp) except OSError: pass raise return temp class atomictempfile(object): '''writeable file object that atomically updates a file All writes will go to a temporary copy of the original file. Call close() when you are done writing, and atomictempfile will rename the temporary copy to the original name, making the changes visible. If the object is destroyed without being closed, all your writes are discarded. ''' def __init__(self, name, mode='w+b', createmode=None): self.__name = name # permanent name self._tempname = mktempcopy(name, emptyok=('w' in mode), createmode=createmode) self._fp = posixfile(self._tempname, mode) # delegated methods self.write = self._fp.write self.fileno = self._fp.fileno def close(self): if not self._fp.closed: self._fp.close() rename(self._tempname, localpath(self.__name)) def discard(self): if not self._fp.closed: try: os.unlink(self._tempname) except OSError: pass self._fp.close() def __del__(self): if safehasattr(self, '_fp'): # constructor actually did something self.discard() def makedirs(name, mode=None): """recursive directory creation with parent mode inheritance""" try: os.mkdir(name) except OSError, err: if err.errno == errno.EEXIST: return if err.errno != errno.ENOENT or not name: raise parent = os.path.dirname(os.path.abspath(name)) if parent == name: raise makedirs(parent, mode) os.mkdir(name) if mode is not None: os.chmod(name, mode) def readfile(path): fp = open(path, 'rb') try: return fp.read() finally: fp.close() def writefile(path, text): fp = open(path, 'wb') try: fp.write(text) finally: fp.close() def appendfile(path, text): fp = open(path, 'ab') try: fp.write(text) finally: fp.close() class chunkbuffer(object): """Allow arbitrary sized chunks of data to be efficiently read from an iterator over chunks of arbitrary size.""" def __init__(self, in_iter): """in_iter is the iterator that's iterating over the input chunks. targetsize is how big a buffer to try to maintain.""" def splitbig(chunks): for chunk in chunks: if len(chunk) > 2**20: pos = 0 while pos < len(chunk): end = pos + 2 ** 18 yield chunk[pos:end] pos = end else: yield chunk self.iter = splitbig(in_iter) self._queue = deque() def read(self, l): """Read L bytes of data from the iterator of chunks of data. Returns less than L bytes if the iterator runs dry.""" left = l buf = '' queue = self._queue while left > 0: # refill the queue if not queue: target = 2**18 for chunk in self.iter: queue.append(chunk) target -= len(chunk) if target <= 0: break if not queue: break chunk = queue.popleft() left -= len(chunk) if left < 0: queue.appendleft(chunk[left:]) buf += chunk[:left] else: buf += chunk return buf def filechunkiter(f, size=65536, limit=None): """Create a generator that produces the data in the file size (default 65536) bytes at a time, up to optional limit (default is to read all data). Chunks may be less than size bytes if the chunk is the last chunk in the file, or the file is a socket or some other type of file that sometimes reads less data than is requested.""" assert size >= 0 assert limit is None or limit >= 0 while True: if limit is None: nbytes = size else: nbytes = min(limit, size) s = nbytes and f.read(nbytes) if not s: break if limit: limit -= len(s) yield s def makedate(): ct = time.time() if ct < 0: hint = _("check your clock") raise Abort(_("negative timestamp: %d") % ct, hint=hint) delta = (datetime.datetime.utcfromtimestamp(ct) - datetime.datetime.fromtimestamp(ct)) tz = delta.days * 86400 + delta.seconds return ct, tz def datestr(date=None, format='%a %b %d %H:%M:%S %Y %1%2'): """represent a (unixtime, offset) tuple as a localized time. unixtime is seconds since the epoch, and offset is the time zone's number of seconds away from UTC. if timezone is false, do not append time zone to string.""" t, tz = date or makedate() if t < 0: t = 0 # time.gmtime(lt) fails on Windows for lt < -43200 tz = 0 if "%1" in format or "%2" in format: sign = (tz > 0) and "-" or "+" minutes = abs(tz) // 60 format = format.replace("%1", "%c%02d" % (sign, minutes // 60)) format = format.replace("%2", "%02d" % (minutes % 60)) try: t = time.gmtime(float(t) - tz) except ValueError: # time was out of range t = time.gmtime(sys.maxint) s = time.strftime(format, t) return s def shortdate(date=None): """turn (timestamp, tzoff) tuple into iso 8631 date.""" return datestr(date, format='%Y-%m-%d') def strdate(string, format, defaults=[]): """parse a localized time string and return a (unixtime, offset) tuple. if the string cannot be parsed, ValueError is raised.""" def timezone(string): tz = string.split()[-1] if tz[0] in "+-" and len(tz) == 5 and tz[1:].isdigit(): sign = (tz[0] == "+") and 1 or -1 hours = int(tz[1:3]) minutes = int(tz[3:5]) return -sign * (hours * 60 + minutes) * 60 if tz == "GMT" or tz == "UTC": return 0 return None # NOTE: unixtime = localunixtime + offset offset, date = timezone(string), string if offset is not None: date = " ".join(string.split()[:-1]) # add missing elements from defaults usenow = False # default to using biased defaults for part in ("S", "M", "HI", "d", "mb", "yY"): # decreasing specificity found = [True for p in part if ("%"+p) in format] if not found: date += "@" + defaults[part][usenow] format += "@%" + part[0] else: # We've found a specific time element, less specific time # elements are relative to today usenow = True timetuple = time.strptime(date, format) localunixtime = int(calendar.timegm(timetuple)) if offset is None: # local timezone unixtime = int(time.mktime(timetuple)) offset = unixtime - localunixtime else: unixtime = localunixtime + offset return unixtime, offset def parsedate(date, formats=None, bias={}): """parse a localized date/time and return a (unixtime, offset) tuple. The date may be a "unixtime offset" string or in one of the specified formats. If the date already is a (unixtime, offset) tuple, it is returned. """ if not date: return 0, 0 if isinstance(date, tuple) and len(date) == 2: return date if not formats: formats = defaultdateformats date = date.strip() try: when, offset = map(int, date.split(' ')) except ValueError: # fill out defaults now = makedate() defaults = {} for part in ("d", "mb", "yY", "HI", "M", "S"): # this piece is for rounding the specific end of unknowns b = bias.get(part) if b is None: if part[0] in "HMS": b = "00" else: b = "0" # this piece is for matching the generic end to today's date n = datestr(now, "%" + part[0]) defaults[part] = (b, n) for format in formats: try: when, offset = strdate(date, format, defaults) except (ValueError, OverflowError): pass else: break else: raise Abort(_('invalid date: %r') % date) # validate explicit (probably user-specified) date and # time zone offset. values must fit in signed 32 bits for # current 32-bit linux runtimes. timezones go from UTC-12 # to UTC+14 if abs(when) > 0x7fffffff: raise Abort(_('date exceeds 32 bits: %d') % when) if when < 0: raise Abort(_('negative date value: %d') % when) if offset < -50400 or offset > 43200: raise Abort(_('impossible time zone offset: %d') % offset) return when, offset def matchdate(date): """Return a function that matches a given date match specifier Formats include: '{date}' match a given date to the accuracy provided '<{date}' on or before a given date '>{date}' on or after a given date >>> p1 = parsedate("10:29:59") >>> p2 = parsedate("10:30:00") >>> p3 = parsedate("10:30:59") >>> p4 = parsedate("10:31:00") >>> p5 = parsedate("Sep 15 10:30:00 1999") >>> f = matchdate("10:30") >>> f(p1[0]) False >>> f(p2[0]) True >>> f(p3[0]) True >>> f(p4[0]) False >>> f(p5[0]) False """ def lower(date): d = dict(mb="1", d="1") return parsedate(date, extendeddateformats, d)[0] def upper(date): d = dict(mb="12", HI="23", M="59", S="59") for days in ("31", "30", "29"): try: d["d"] = days return parsedate(date, extendeddateformats, d)[0] except Abort: pass d["d"] = "28" return parsedate(date, extendeddateformats, d)[0] date = date.strip() if not date: raise Abort(_("dates cannot consist entirely of whitespace")) elif date[0] == "<": if not date[1:]: raise Abort(_("invalid day spec, use '": if not date[1:]: raise Abort(_("invalid day spec, use '>DATE'")) when = lower(date[1:]) return lambda x: x >= when elif date[0] == "-": try: days = int(date[1:]) except ValueError: raise Abort(_("invalid day spec: %s") % date[1:]) if days < 0: raise Abort(_("%s must be nonnegative (see 'hg help dates')") % date[1:]) when = makedate()[0] - days * 3600 * 24 return lambda x: x >= when elif " to " in date: a, b = date.split(" to ") start, stop = lower(a), upper(b) return lambda x: x >= start and x <= stop else: start, stop = lower(date), upper(date) return lambda x: x >= start and x <= stop def shortuser(user): """Return a short representation of a user name or email address.""" f = user.find('@') if f >= 0: user = user[:f] f = user.find('<') if f >= 0: user = user[f + 1:] f = user.find(' ') if f >= 0: user = user[:f] f = user.find('.') if f >= 0: user = user[:f] return user def emailuser(user): """Return the user portion of an email address.""" f = user.find('@') if f >= 0: user = user[:f] f = user.find('<') if f >= 0: user = user[f + 1:] return user def email(author): '''get email of author.''' r = author.find('>') if r == -1: r = None return author[author.find('<') + 1:r] def _ellipsis(text, maxlength): if len(text) <= maxlength: return text, False else: return "%s..." % (text[:maxlength - 3]), True def ellipsis(text, maxlength=400): """Trim string to at most maxlength (default: 400) characters.""" try: # use unicode not to split at intermediate multi-byte sequence utext, truncated = _ellipsis(text.decode(encoding.encoding), maxlength) if not truncated: return text return utext.encode(encoding.encoding) except (UnicodeDecodeError, UnicodeEncodeError): return _ellipsis(text, maxlength)[0] _byteunits = ( (100, 1 << 30, _('%.0f GB')), (10, 1 << 30, _('%.1f GB')), (1, 1 << 30, _('%.2f GB')), (100, 1 << 20, _('%.0f MB')), (10, 1 << 20, _('%.1f MB')), (1, 1 << 20, _('%.2f MB')), (100, 1 << 10, _('%.0f KB')), (10, 1 << 10, _('%.1f KB')), (1, 1 << 10, _('%.2f KB')), (1, 1, _('%.0f bytes')), ) def bytecount(nbytes): '''return byte count formatted as readable string, with units''' for multiplier, divisor, format in _byteunits: if nbytes >= divisor * multiplier: return format % (nbytes / float(divisor)) return _byteunits[-1][2] % nbytes def uirepr(s): # Avoid double backslash in Windows path repr() return repr(s).replace('\\\\', '\\') # delay import of textwrap def MBTextWrapper(**kwargs): class tw(textwrap.TextWrapper): """ Extend TextWrapper for width-awareness. Neither number of 'bytes' in any encoding nor 'characters' is appropriate to calculate terminal columns for specified string. Original TextWrapper implementation uses built-in 'len()' directly, so overriding is needed to use width information of each characters. In addition, characters classified into 'ambiguous' width are treated as wide in east asian area, but as narrow in other. This requires use decision to determine width of such characters. """ def __init__(self, **kwargs): textwrap.TextWrapper.__init__(self, **kwargs) # for compatibility between 2.4 and 2.6 if getattr(self, 'drop_whitespace', None) is None: self.drop_whitespace = kwargs.get('drop_whitespace', True) def _cutdown(self, ucstr, space_left): l = 0 colwidth = encoding.ucolwidth for i in xrange(len(ucstr)): l += colwidth(ucstr[i]) if space_left < l: return (ucstr[:i], ucstr[i:]) return ucstr, '' # overriding of base class def _handle_long_word(self, reversed_chunks, cur_line, cur_len, width): space_left = max(width - cur_len, 1) if self.break_long_words: cut, res = self._cutdown(reversed_chunks[-1], space_left) cur_line.append(cut) reversed_chunks[-1] = res elif not cur_line: cur_line.append(reversed_chunks.pop()) # this overriding code is imported from TextWrapper of python 2.6 # to calculate columns of string by 'encoding.ucolwidth()' def _wrap_chunks(self, chunks): colwidth = encoding.ucolwidth lines = [] if self.width <= 0: raise ValueError("invalid width %r (must be > 0)" % self.width) # Arrange in reverse order so items can be efficiently popped # from a stack of chucks. chunks.reverse() while chunks: # Start the list of chunks that will make up the current line. # cur_len is just the length of all the chunks in cur_line. cur_line = [] cur_len = 0 # Figure out which static string will prefix this line. if lines: indent = self.subsequent_indent else: indent = self.initial_indent # Maximum width for this line. width = self.width - len(indent) # First chunk on line is whitespace -- drop it, unless this # is the very beginning of the text (ie. no lines started yet). if self.drop_whitespace and chunks[-1].strip() == '' and lines: del chunks[-1] while chunks: l = colwidth(chunks[-1]) # Can at least squeeze this chunk onto the current line. if cur_len + l <= width: cur_line.append(chunks.pop()) cur_len += l # Nope, this line is full. else: break # The current line is full, and the next chunk is too big to # fit on *any* line (not just this one). if chunks and colwidth(chunks[-1]) > width: self._handle_long_word(chunks, cur_line, cur_len, width) # If the last chunk on this line is all whitespace, drop it. if (self.drop_whitespace and cur_line and cur_line[-1].strip() == ''): del cur_line[-1] # Convert current line back to a string and store it in list # of all lines (return value). if cur_line: lines.append(indent + ''.join(cur_line)) return lines global MBTextWrapper MBTextWrapper = tw return tw(**kwargs) def wrap(line, width, initindent='', hangindent=''): maxindent = max(len(hangindent), len(initindent)) if width <= maxindent: # adjust for weird terminal size width = max(78, maxindent + 1) line = line.decode(encoding.encoding, encoding.encodingmode) initindent = initindent.decode(encoding.encoding, encoding.encodingmode) hangindent = hangindent.decode(encoding.encoding, encoding.encodingmode) wrapper = MBTextWrapper(width=width, initial_indent=initindent, subsequent_indent=hangindent) return wrapper.fill(line).encode(encoding.encoding) def iterlines(iterator): for chunk in iterator: for line in chunk.splitlines(): yield line def expandpath(path): return os.path.expanduser(os.path.expandvars(path)) def hgcmd(): """Return the command used to execute current hg This is different from hgexecutable() because on Windows we want to avoid things opening new shell windows like batch files, so we get either the python call or current executable. """ if mainfrozen(): return [sys.executable] return gethgcmd() def rundetached(args, condfn): """Execute the argument list in a detached process. condfn is a callable which is called repeatedly and should return True once the child process is known to have started successfully. At this point, the child process PID is returned. If the child process fails to start or finishes before condfn() evaluates to True, return -1. """ # Windows case is easier because the child process is either # successfully starting and validating the condition or exiting # on failure. We just poll on its PID. On Unix, if the child # process fails to start, it will be left in a zombie state until # the parent wait on it, which we cannot do since we expect a long # running process on success. Instead we listen for SIGCHLD telling # us our child process terminated. terminated = set() def handler(signum, frame): terminated.add(os.wait()) prevhandler = None SIGCHLD = getattr(signal, 'SIGCHLD', None) if SIGCHLD is not None: prevhandler = signal.signal(SIGCHLD, handler) try: pid = spawndetached(args) while not condfn(): if ((pid in terminated or not testpid(pid)) and not condfn()): return -1 time.sleep(0.1) return pid finally: if prevhandler is not None: signal.signal(signal.SIGCHLD, prevhandler) try: any, all = any, all except NameError: def any(iterable): for i in iterable: if i: return True return False def all(iterable): for i in iterable: if not i: return False return True def interpolate(prefix, mapping, s, fn=None, escape_prefix=False): """Return the result of interpolating items in the mapping into string s. prefix is a single character string, or a two character string with a backslash as the first character if the prefix needs to be escaped in a regular expression. fn is an optional function that will be applied to the replacement text just before replacement. escape_prefix is an optional flag that allows using doubled prefix for its escaping. """ fn = fn or (lambda s: s) patterns = '|'.join(mapping.keys()) if escape_prefix: patterns += '|' + prefix if len(prefix) > 1: prefix_char = prefix[1:] else: prefix_char = prefix mapping[prefix_char] = prefix_char r = re.compile(r'%s(%s)' % (prefix, patterns)) return r.sub(lambda x: fn(mapping[x.group()[1:]]), s) def getport(port): """Return the port for a given network service. If port is an integer, it's returned as is. If it's a string, it's looked up using socket.getservbyname(). If there's no matching service, util.Abort is raised. """ try: return int(port) except ValueError: pass try: return socket.getservbyname(port) except socket.error: raise Abort(_("no port number associated with service '%s'") % port) _booleans = {'1': True, 'yes': True, 'true': True, 'on': True, 'always': True, '0': False, 'no': False, 'false': False, 'off': False, 'never': False} def parsebool(s): """Parse s into a boolean. If s is not a valid boolean, returns None. """ return _booleans.get(s.lower(), None) _hexdig = '0123456789ABCDEFabcdef' _hextochr = dict((a + b, chr(int(a + b, 16))) for a in _hexdig for b in _hexdig) def _urlunquote(s): """unquote('abc%20def') -> 'abc def'.""" res = s.split('%') # fastpath if len(res) == 1: return s s = res[0] for item in res[1:]: try: s += _hextochr[item[:2]] + item[2:] except KeyError: s += '%' + item except UnicodeDecodeError: s += unichr(int(item[:2], 16)) + item[2:] return s class url(object): r"""Reliable URL parser. This parses URLs and provides attributes for the following components: ://:@:/?# Missing components are set to None. The only exception is fragment, which is set to '' if present but empty. If parsefragment is False, fragment is included in query. If parsequery is False, query is included in path. If both are False, both fragment and query are included in path. See http://www.ietf.org/rfc/rfc2396.txt for more information. Note that for backward compatibility reasons, bundle URLs do not take host names. That means 'bundle://../' has a path of '../'. Examples: >>> url('http://www.ietf.org/rfc/rfc2396.txt') >>> url('ssh://[::1]:2200//home/joe/repo') >>> url('file:///home/joe/repo') >>> url('file:///c:/temp/foo/') >>> url('bundle:foo') >>> url('bundle://../foo') >>> url(r'c:\foo\bar') >>> url(r'\\blah\blah\blah') >>> url(r'\\blah\blah\blah#baz') Authentication credentials: >>> url('ssh://joe:xyz@x/repo') >>> url('ssh://joe@x/repo') Query strings and fragments: >>> url('http://host/a?b#c') >>> url('http://host/a?b#c', parsequery=False, parsefragment=False) """ _safechars = "!~*'()+" _safepchars = "/!~*'()+:" _matchscheme = re.compile(r'^[a-zA-Z0-9+.\-]+:').match def __init__(self, path, parsequery=True, parsefragment=True): # We slowly chomp away at path until we have only the path left self.scheme = self.user = self.passwd = self.host = None self.port = self.path = self.query = self.fragment = None self._localpath = True self._hostport = '' self._origpath = path if parsefragment and '#' in path: path, self.fragment = path.split('#', 1) if not path: path = None # special case for Windows drive letters and UNC paths if hasdriveletter(path) or path.startswith(r'\\'): self.path = path return # For compatibility reasons, we can't handle bundle paths as # normal URLS if path.startswith('bundle:'): self.scheme = 'bundle' path = path[7:] if path.startswith('//'): path = path[2:] self.path = path return if self._matchscheme(path): parts = path.split(':', 1) if parts[0]: self.scheme, path = parts self._localpath = False if not path: path = None if self._localpath: self.path = '' return else: if self._localpath: self.path = path return if parsequery and '?' in path: path, self.query = path.split('?', 1) if not path: path = None if not self.query: self.query = None # // is required to specify a host/authority if path and path.startswith('//'): parts = path[2:].split('/', 1) if len(parts) > 1: self.host, path = parts path = path else: self.host = parts[0] path = None if not self.host: self.host = None # path of file:///d is /d # path of file:///d:/ is d:/, not /d:/ if path and not hasdriveletter(path): path = '/' + path if self.host and '@' in self.host: self.user, self.host = self.host.rsplit('@', 1) if ':' in self.user: self.user, self.passwd = self.user.split(':', 1) if not self.host: self.host = None # Don't split on colons in IPv6 addresses without ports if (self.host and ':' in self.host and not (self.host.startswith('[') and self.host.endswith(']'))): self._hostport = self.host self.host, self.port = self.host.rsplit(':', 1) if not self.host: self.host = None if (self.host and self.scheme == 'file' and self.host not in ('localhost', '127.0.0.1', '[::1]')): raise Abort(_('file:// URLs can only refer to localhost')) self.path = path # leave the query string escaped for a in ('user', 'passwd', 'host', 'port', 'path', 'fragment'): v = getattr(self, a) if v is not None: setattr(self, a, _urlunquote(v)) def __repr__(self): attrs = [] for a in ('scheme', 'user', 'passwd', 'host', 'port', 'path', 'query', 'fragment'): v = getattr(self, a) if v is not None: attrs.append('%s: %r' % (a, v)) return '' % ', '.join(attrs) def __str__(self): r"""Join the URL's components back into a URL string. Examples: >>> str(url('http://user:pw@host:80/c:/bob?fo:oo#ba:ar')) 'http://user:pw@host:80/c:/bob?fo:oo#ba:ar' >>> str(url('http://user:pw@host:80/?foo=bar&baz=42')) 'http://user:pw@host:80/?foo=bar&baz=42' >>> str(url('http://user:pw@host:80/?foo=bar%3dbaz')) 'http://user:pw@host:80/?foo=bar%3dbaz' >>> str(url('ssh://user:pw@[::1]:2200//home/joe#')) 'ssh://user:pw@[::1]:2200//home/joe#' >>> str(url('http://localhost:80//')) 'http://localhost:80//' >>> str(url('http://localhost:80/')) 'http://localhost:80/' >>> str(url('http://localhost:80')) 'http://localhost:80/' >>> str(url('bundle:foo')) 'bundle:foo' >>> str(url('bundle://../foo')) 'bundle:../foo' >>> str(url('path')) 'path' >>> str(url('file:///tmp/foo/bar')) 'file:///tmp/foo/bar' >>> str(url('file:///c:/tmp/foo/bar')) 'file:///c:/tmp/foo/bar' >>> print url(r'bundle:foo\bar') bundle:foo\bar """ if self._localpath: s = self.path if self.scheme == 'bundle': s = 'bundle:' + s if self.fragment: s += '#' + self.fragment return s s = self.scheme + ':' if self.user or self.passwd or self.host: s += '//' elif self.scheme and (not self.path or self.path.startswith('/') or hasdriveletter(self.path)): s += '//' if hasdriveletter(self.path): s += '/' if self.user: s += urllib.quote(self.user, safe=self._safechars) if self.passwd: s += ':' + urllib.quote(self.passwd, safe=self._safechars) if self.user or self.passwd: s += '@' if self.host: if not (self.host.startswith('[') and self.host.endswith(']')): s += urllib.quote(self.host) else: s += self.host if self.port: s += ':' + urllib.quote(self.port) if self.host: s += '/' if self.path: # TODO: similar to the query string, we should not unescape the # path when we store it, the path might contain '%2f' = '/', # which we should *not* escape. s += urllib.quote(self.path, safe=self._safepchars) if self.query: # we store the query in escaped form. s += '?' + self.query if self.fragment is not None: s += '#' + urllib.quote(self.fragment, safe=self._safepchars) return s def authinfo(self): user, passwd = self.user, self.passwd try: self.user, self.passwd = None, None s = str(self) finally: self.user, self.passwd = user, passwd if not self.user: return (s, None) # authinfo[1] is passed to urllib2 password manager, and its # URIs must not contain credentials. The host is passed in the # URIs list because Python < 2.4.3 uses only that to search for # a password. return (s, (None, (s, self.host), self.user, self.passwd or '')) def isabs(self): if self.scheme and self.scheme != 'file': return True # remote URL if hasdriveletter(self.path): return True # absolute for our purposes - can't be joined() if self.path.startswith(r'\\'): return True # Windows UNC path if self.path.startswith('/'): return True # POSIX-style return False def localpath(self): if self.scheme == 'file' or self.scheme == 'bundle': path = self.path or '/' # For Windows, we need to promote hosts containing drive # letters to paths with drive letters. if hasdriveletter(self._hostport): path = self._hostport + '/' + self.path elif (self.host is not None and self.path and not hasdriveletter(path)): path = '/' + path return path return self._origpath def hasscheme(path): return bool(url(path).scheme) def hasdriveletter(path): return path and path[1:2] == ':' and path[0:1].isalpha() def urllocalpath(path): return url(path, parsequery=False, parsefragment=False).localpath() def hidepassword(u): '''hide user credential in a url string''' u = url(u) if u.passwd: u.passwd = '***' return str(u) def removeauth(u): '''remove all authentication information from a url string''' u = url(u) u.user = u.passwd = None return str(u) def isatty(fd): try: return fd.isatty() except AttributeError: return False