hgk: simplify tags parser
As when hg tags is being called without -v option, it returns
lines with two elements in each, we can just interate them as
if it were a usual Tcl list using foreach and two variables.
Line endings and whitespace don't matter when doing so, so we
may keep them as is.
When we're processing the lines, tag variable is assigned a tag
name, and rev is a string in form of revision:hash which we can
split on colon. As Tcl8.4 lacks lassign command, and using lindex
makes code a bit less readable, we use foreach to iterate over
two-element list.
# 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 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.
return os.path.normpath(normcase(os.path.realpath(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