Mercurial > hg
view mercurial/windows.py @ 23626:012a7b482d68
share: use the 'sharedpath' attr on repo instead of reloading from the file
Seems like a useful optimization, and now the exact file content is not a
concern.
author | Matt Harbison <matt_harbison@yahoo.com> |
---|---|
date | Thu, 18 Dec 2014 23:24:17 -0500 |
parents | 234e4c24b980 |
children | 1642eb429536 |
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# windows.py - Windows utility function implementations for Mercurial # # Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from i18n import _ import osutil, encoding import errno, msvcrt, os, re, stat, sys, _winreg import win32 executablepath = win32.executablepath getuser = win32.getuser hidewindow = win32.hidewindow makedir = win32.makedir nlinks = win32.nlinks oslink = win32.oslink samedevice = win32.samedevice samefile = win32.samefile setsignalhandler = win32.setsignalhandler spawndetached = win32.spawndetached split = os.path.split termwidth = win32.termwidth testpid = win32.testpid unlink = win32.unlink umask = 0022 # wrap osutil.posixfile to provide friendlier exceptions def posixfile(name, mode='r', buffering=-1): try: return osutil.posixfile(name, mode, buffering) except WindowsError, err: raise IOError(err.errno, '%s: %s' % (name, err.strerror)) posixfile.__doc__ = osutil.posixfile.__doc__ class winstdout(object): '''stdout on windows misbehaves if sent through a pipe''' def __init__(self, fp): self.fp = fp def __getattr__(self, key): return getattr(self.fp, key) def close(self): try: self.fp.close() except IOError: pass def write(self, s): try: # This is workaround for "Not enough space" error on # writing large size of data to console. limit = 16000 l = len(s) start = 0 self.softspace = 0 while start < l: end = start + limit self.fp.write(s[start:end]) start = end except IOError, inst: if inst.errno != 0: raise self.close() raise IOError(errno.EPIPE, 'Broken pipe') def flush(self): try: return self.fp.flush() except IOError, inst: if inst.errno != errno.EINVAL: raise self.close() raise IOError(errno.EPIPE, 'Broken pipe') sys.__stdout__ = sys.stdout = winstdout(sys.stdout) def _is_win_9x(): '''return true if run on windows 95, 98 or me.''' try: return sys.getwindowsversion()[3] == 1 except AttributeError: return 'command' in os.environ.get('comspec', '') def openhardlinks(): return not _is_win_9x() def parsepatchoutput(output_line): """parses the output produced by patch and returns the filename""" pf = output_line[14:] if pf[0] == '`': pf = pf[1:-1] # Remove the quotes return pf def sshargs(sshcmd, host, user, port): '''Build argument list for ssh or Plink''' pflag = 'plink' in sshcmd.lower() and '-P' or '-p' args = user and ("%s@%s" % (user, host)) or host return port and ("%s %s %s" % (args, pflag, port)) or args def setflags(f, l, x): pass def copymode(src, dst, mode=None): pass def checkexec(path): return False def checklink(path): return False def setbinary(fd): # When run without console, pipes may expose invalid # fileno(), usually set to -1. fno = getattr(fd, 'fileno', None) if fno is not None and fno() >= 0: msvcrt.setmode(fno(), os.O_BINARY) def pconvert(path): return path.replace(os.sep, '/') def localpath(path): return path.replace('/', '\\') def normpath(path): return pconvert(os.path.normpath(path)) def normcase(path): return encoding.upper(path) def samestat(s1, s2): return False # A sequence of backslashes is special iff it precedes a double quote: # - if there's an even number of backslashes, the double quote is not # quoted (i.e. it ends the quoted region) # - if there's an odd number of backslashes, the double quote is quoted # - in both cases, every pair of backslashes is unquoted into a single # backslash # (See http://msdn2.microsoft.com/en-us/library/a1y7w461.aspx ) # So, to quote a string, we must surround it in double quotes, double # the number of backslashes that precede double quotes and add another # backslash before every double quote (being careful with the double # quote we've appended to the end) _quotere = None def shellquote(s): global _quotere if _quotere is None: _quotere = re.compile(r'(\\*)("|\\$)') return '"%s"' % _quotere.sub(r'\1\1\\\2', s) def quotecommand(cmd): """Build a command string suitable for os.popen* calls.""" if sys.version_info < (2, 7, 1): # Python versions since 2.7.1 do this extra quoting themselves return '"' + cmd + '"' return cmd def popen(command, mode='r'): # Work around "popen spawned process may not write to stdout # under windows" # http://bugs.python.org/issue1366 command += " 2> %s" % os.devnull return os.popen(quotecommand(command), mode) def explainexit(code): return _("exited with status %d") % code, code # if you change this stub into a real check, please try to implement the # username and groupname functions above, too. def isowner(st): return True def findexe(command): '''Find executable for command searching like cmd.exe does. If command is a basename then PATH is searched for command. PATH isn't searched if command is an absolute or relative path. An extension from PATHEXT is found and added if not present. If command isn't found None is returned.''' pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD') pathexts = [ext for ext in pathext.lower().split(os.pathsep)] if os.path.splitext(command)[1].lower() in pathexts: pathexts = [''] def findexisting(pathcommand): 'Will append extension (if needed) and return existing file' for ext in pathexts: executable = pathcommand + ext if os.path.exists(executable): return executable return None if os.sep in command: return findexisting(command) for path in os.environ.get('PATH', '').split(os.pathsep): executable = findexisting(os.path.join(path, command)) if executable is not None: return executable return findexisting(os.path.expanduser(os.path.expandvars(command))) _wantedkinds = set([stat.S_IFREG, stat.S_IFLNK]) def statfiles(files): '''Stat each file in files. Yield each stat, or None if a file does not exist or has a type we don't care about. Cluster and cache stat per directory to minimize number of OS stat calls.''' dircache = {} # dirname -> filename -> status | None if file does not exist getkind = stat.S_IFMT for nf in files: nf = normcase(nf) dir, base = os.path.split(nf) if not dir: dir = '.' cache = dircache.get(dir, None) if cache is None: try: dmap = dict([(normcase(n), s) for n, k, s in osutil.listdir(dir, True) if getkind(s.st_mode) in _wantedkinds]) except OSError, err: # handle directory not found in Python version prior to 2.5 # Python <= 2.4 returns native Windows code 3 in errno # Python >= 2.5 returns ENOENT and adds winerror field # EINVAL is raised if dir is not a directory. if err.errno not in (3, errno.ENOENT, errno.EINVAL, errno.ENOTDIR): raise dmap = {} cache = dircache.setdefault(dir, dmap) yield cache.get(base, None) def username(uid=None): """Return the name of the user with the given uid. If uid is None, return the name of the current user.""" return None def groupname(gid=None): """Return the name of the group with the given gid. If gid is None, return the name of the current group.""" return None def _removedirs(name): """special version of os.removedirs that does not remove symlinked directories or junction points if they actually contain files""" if osutil.listdir(name): return os.rmdir(name) head, tail = os.path.split(name) if not tail: head, tail = os.path.split(head) while head and tail: try: if osutil.listdir(head): return os.rmdir(head) except (ValueError, OSError): break head, tail = os.path.split(head) def unlinkpath(f, ignoremissing=False): """unlink and remove the directory if it is empty""" try: unlink(f) except OSError, e: if not (ignoremissing and e.errno == errno.ENOENT): raise # try removing directories that might now be empty try: _removedirs(os.path.dirname(f)) except OSError: pass def rename(src, dst): '''atomically rename file src to dst, replacing dst if it exists''' try: os.rename(src, dst) except OSError, e: if e.errno != errno.EEXIST: raise unlink(dst) os.rename(src, dst) def gethgcmd(): return [sys.executable] + sys.argv[:1] def groupmembers(name): # Don't support groups on Windows for now raise KeyError def isexec(f): return False class cachestat(object): def __init__(self, path): pass def cacheable(self): return False def lookupreg(key, valname=None, scope=None): ''' Look up a key/value name in the Windows registry. valname: value name. If unspecified, the default value for the key is used. scope: optionally specify scope for registry lookup, this can be a sequence of scopes to look up in order. Default (CURRENT_USER, LOCAL_MACHINE). ''' if scope is None: scope = (_winreg.HKEY_CURRENT_USER, _winreg.HKEY_LOCAL_MACHINE) elif not isinstance(scope, (list, tuple)): scope = (scope,) for s in scope: try: val = _winreg.QueryValueEx(_winreg.OpenKey(s, key), valname)[0] # never let a Unicode string escape into the wild return encoding.tolocal(val.encode('UTF-8')) except EnvironmentError: pass expandglobs = True def statislink(st): '''check whether a stat result is a symlink''' return False def statisexec(st): '''check whether a stat result is an executable file''' return False def readpipe(pipe): """Read all available data from a pipe.""" chunks = [] while True: size = os.fstat(pipe.fileno()).st_size if not size: break s = pipe.read(size) if not s: break chunks.append(s) return ''.join(chunks)