windows.py
319 lines
| 9.5 KiB
| text/x-python
|
PythonLexer
/ mercurial / windows.py
|
r8226 | # 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 | ||||
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r10263 | # GNU General Public License version 2 or any later version. | ||
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r7890 | |||
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r7914 | from i18n import _ | ||
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r14064 | import osutil | ||
import errno, msvcrt, os, re, sys | ||||
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r8421 | |||
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r15016 | import win32 | ||
executablepath = win32.executablepath | ||||
getuser = win32.getuser | ||||
hidewindow = win32.hidewindow | ||||
lookupreg = win32.lookupreg | ||||
makedir = win32.makedir | ||||
nlinks = win32.nlinks | ||||
oslink = win32.oslink | ||||
samedevice = win32.samedevice | ||||
samefile = win32.samefile | ||||
setsignalhandler = win32.setsignalhandler | ||||
spawndetached = win32.spawndetached | ||||
termwidth = win32.termwidth | ||||
testpid = win32.testpid | ||||
unlink = win32.unlink | ||||
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r14985 | |||
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r7890 | nulldev = 'NUL:' | ||
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r15440 | umask = 0022 | ||
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r7890 | |||
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r8421 | # wrap osutil.posixfile to provide friendlier exceptions | ||
def posixfile(name, mode='r', buffering=-1): | ||||
try: | ||||
return osutil.posixfile(name, mode, buffering) | ||||
except WindowsError, err: | ||||
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r9448 | raise IOError(err.errno, '%s: %s' % (name, err.strerror)) | ||
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r8421 | posixfile.__doc__ = osutil.posixfile.__doc__ | ||
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r7890 | |||
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r8778 | class winstdout(object): | ||
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r7890 | '''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() | ||||
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r14004 | except IOError: | ||
pass | ||||
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r7890 | |||
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 | ||||
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r10394 | self.softspace = 0 | ||
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r7890 | while start < l: | ||
end = start + limit | ||||
self.fp.write(s[start:end]) | ||||
start = end | ||||
except IOError, inst: | ||||
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r10282 | if inst.errno != 0: | ||
raise | ||||
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r7890 | self.close() | ||
raise IOError(errno.EPIPE, 'Broken pipe') | ||||
def flush(self): | ||||
try: | ||||
return self.fp.flush() | ||||
except IOError, inst: | ||||
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r10282 | if inst.errno != errno.EINVAL: | ||
raise | ||||
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r7890 | self.close() | ||
raise IOError(errno.EPIPE, 'Broken pipe') | ||||
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r14892 | sys.__stdout__ = sys.stdout = winstdout(sys.stdout) | ||
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r7890 | |||
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(): | ||||
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r13375 | return not _is_win_9x() | ||
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r7890 | |||
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r14231 | def parsepatchoutput(output_line): | ||
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r8761 | """parses the output produced by patch and returns the filename""" | ||
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r7890 | 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 | ||||
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r14232 | def setflags(f, l, x): | ||
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r7890 | pass | ||
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r15011 | def copymode(src, dst, mode=None): | ||
pass | ||||
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r13879 | def checkexec(path): | ||
return False | ||||
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r13890 | def checklink(path): | ||
return False | ||||
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r14233 | def setbinary(fd): | ||
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r7890 | # When run without console, pipes may expose invalid | ||
# fileno(), usually set to -1. | ||||
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r14969 | fno = getattr(fd, 'fileno', None) | ||
if fno is not None and fno() >= 0: | ||||
msvcrt.setmode(fno(), os.O_BINARY) | ||||
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r7890 | |||
def pconvert(path): | ||||
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r16076 | return path.replace(os.sep, '/') | ||
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r7890 | |||
def localpath(path): | ||||
return path.replace('/', '\\') | ||||
def normpath(path): | ||||
return pconvert(os.path.normpath(path)) | ||||
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r15672 | encodinglower = None | ||
encodingupper = None | ||||
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r15671 | def normcase(path): | ||
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r15672 | return encodingupper(path) | ||
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r15488 | |||
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r9238 | def realpath(path): | ||
''' | ||||
Returns the true, canonical file system path equivalent to the given | ||||
path. | ||||
''' | ||||
# TODO: There may be a more clever way to do this that also handles other, | ||||
# less common file systems. | ||||
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r15637 | return os.path.normpath(normcase(os.path.realpath(path))) | ||
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r9238 | |||
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r7890 | 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 preceed 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.""" | ||||
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r13188 | if sys.version_info < (2, 7, 1): | ||
# Python versions since 2.7.1 do this extra quoting themselves | ||||
return '"' + cmd + '"' | ||||
return cmd | ||||
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r7890 | |||
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" % nulldev | ||||
return os.popen(quotecommand(command), mode) | ||||
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r14234 | def explainexit(code): | ||
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r7890 | 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. | ||||
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r8657 | def isowner(st): | ||
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r7890 | return True | ||
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r14271 | def findexe(command): | ||
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r7890 | '''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 | ||||
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r10156 | return findexisting(os.path.expanduser(os.path.expandvars(command))) | ||
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r7890 | |||
def statfiles(files): | ||||
'''Stat each file in files and yield stat or None if file does not exist. | ||||
Cluster and cache stat per directory to minimize number of OS stat calls.''' | ||||
dircache = {} # dirname -> filename -> status | None if file does not exist | ||||
for nf in files: | ||||
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r15637 | nf = normcase(nf) | ||
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r9099 | dir, base = os.path.split(nf) | ||
if not dir: | ||||
dir = '.' | ||||
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r7890 | cache = dircache.get(dir, None) | ||
if cache is None: | ||||
try: | ||||
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r15637 | dmap = dict([(normcase(n), s) | ||
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r7890 | for n, k, s in osutil.listdir(dir, True)]) | ||
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 | ||||
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r8364 | 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: | ||||
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r9572 | if osutil.listdir(head): | ||
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r8364 | return | ||
os.rmdir(head) | ||||
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r14004 | except (ValueError, OSError): | ||
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r8364 | break | ||
head, tail = os.path.split(head) | ||||
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r13235 | def unlinkpath(f): | ||
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r8364 | """unlink and remove the directory if it is empty""" | ||
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r13777 | unlink(f) | ||
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r8364 | # try removing directories that might now be empty | ||
try: | ||||
_removedirs(os.path.dirname(f)) | ||||
except OSError: | ||||
pass | ||||
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r9549 | def rename(src, dst): | ||
'''atomically rename file src to dst, replacing dst if it exists''' | ||||
try: | ||||
os.rename(src, dst) | ||||
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r13278 | except OSError, e: | ||
if e.errno != errno.EEXIST: | ||||
raise | ||||
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r13280 | unlink(dst) | ||
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r9549 | os.rename(src, dst) | ||
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r10239 | def gethgcmd(): | ||
return [sys.executable] + sys.argv[:1] | ||||
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r12689 | def termwidth(): | ||
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r11010 | # cmd.exe does not handle CR like a unix console, the CR is | ||
# counted in the line length. On 80 columns consoles, if 80 | ||||
# characters are written, the following CR won't apply on the | ||||
# current line but on the new one. Keep room for it. | ||||
return 79 | ||||
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r11138 | def groupmembers(name): | ||
# Don't support groups on Windows for now | ||||
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r16687 | raise KeyError | ||
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r11138 | |||
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r14926 | def isexec(f): | ||
return False | ||||
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r14927 | class cachestat(object): | ||
def __init__(self, path): | ||||
pass | ||||
def cacheable(self): | ||||
return False | ||||
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r8614 | expandglobs = True | ||