Mercurial > hg
view mercurial/posix.py @ 8573:62c996d543e6
match: kill unused defaults on _globre
author | Matt Mackall <mpm@selenic.com> |
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date | Sun, 24 May 2009 02:56:14 -0500 |
parents | b87a50b7125c |
children | 573734e7e6d0 |
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# posix.py - Posix 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, incorporated herein by reference. from i18n import _ import osutil import os, sys, errno, stat, getpass, pwd, grp posixfile = file nulldev = '/dev/null' normpath = os.path.normpath samestat = os.path.samestat umask = os.umask(0) os.umask(umask) def openhardlinks(): '''return true if it is safe to hold open file handles to hardlinks''' return True def rcfiles(path): rcs = [os.path.join(path, 'hgrc')] rcdir = os.path.join(path, 'hgrc.d') try: rcs.extend([os.path.join(rcdir, f) for f, kind in osutil.listdir(rcdir) if f.endswith(".rc")]) except OSError: pass return rcs def system_rcpath(): path = [] # old mod_python does not set sys.argv if len(getattr(sys, 'argv', [])) > 0: path.extend(rcfiles(os.path.dirname(sys.argv[0]) + '/../etc/mercurial')) path.extend(rcfiles('/etc/mercurial')) return path def user_rcpath(): return [os.path.expanduser('~/.hgrc')] def parse_patch_output(output_line): """parses the output produced by patch and returns the file name""" pf = output_line[14:] if os.sys.platform == 'OpenVMS': if pf[0] == '`': pf = pf[1:-1] # Remove the quotes else: if pf.startswith("'") and pf.endswith("'") and " " in pf: pf = pf[1:-1] # Remove the quotes return pf def sshargs(sshcmd, host, user, port): '''Build argument list for ssh''' args = user and ("%s@%s" % (user, host)) or host return port and ("%s -p %s" % (args, port)) or args def is_exec(f): """check whether a file is executable""" return (os.lstat(f).st_mode & 0100 != 0) def set_flags(f, l, x): s = os.lstat(f).st_mode if l: if not stat.S_ISLNK(s): # switch file to link data = file(f).read() os.unlink(f) try: os.symlink(data, f) except: # failed to make a link, rewrite file file(f, "w").write(data) # no chmod needed at this point return if stat.S_ISLNK(s): # switch link to file data = os.readlink(f) os.unlink(f) file(f, "w").write(data) s = 0666 & ~umask # avoid restatting for chmod sx = s & 0100 if x and not sx: # Turn on +x for every +r bit when making a file executable # and obey umask. os.chmod(f, s | (s & 0444) >> 2 & ~umask) elif not x and sx: # Turn off all +x bits os.chmod(f, s & 0666) def set_binary(fd): pass def pconvert(path): return path def localpath(path): return path def shellquote(s): if os.sys.platform == 'OpenVMS': return '"%s"' % s else: return "'%s'" % s.replace("'", "'\\''") def quotecommand(cmd): return cmd def popen(command, mode='r'): return os.popen(command, mode) def testpid(pid): '''return False if pid dead, True if running or not sure''' if os.sys.platform == 'OpenVMS': return True try: os.kill(pid, 0) return True except OSError, inst: return inst.errno != errno.ESRCH def explain_exit(code): """return a 2-tuple (desc, code) describing a process's status""" if os.WIFEXITED(code): val = os.WEXITSTATUS(code) return _("exited with status %d") % val, val elif os.WIFSIGNALED(code): val = os.WTERMSIG(code) return _("killed by signal %d") % val, val elif os.WIFSTOPPED(code): val = os.WSTOPSIG(code) return _("stopped by signal %d") % val, val raise ValueError(_("invalid exit code")) def isowner(fp, st=None): """Return True if the file object f belongs to the current user. The return value of a util.fstat(f) may be passed as the st argument. """ if st is None: st = fstat(fp) return st.st_uid == os.getuid() def find_exe(command): '''Find executable for command searching like which does. If command is a basename then PATH is searched for command. PATH isn't searched if command is an absolute or relative path. If command isn't found None is returned.''' if sys.platform == 'OpenVMS': return command def findexisting(executable): 'Will return executable if existing file' 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 None def set_signal_handler(): pass def statfiles(files): 'Stat each file in files and yield stat or None if file does not exist.' lstat = os.lstat for nf in files: try: st = lstat(nf) except OSError, err: if err.errno not in (errno.ENOENT, errno.ENOTDIR): raise st = None yield st def getuser(): '''return name of current user''' return getpass.getuser() def expand_glob(pats): '''On Windows, expand the implicit globs in a list of patterns''' return list(pats) 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.""" if uid is None: uid = os.getuid() try: return pwd.getpwuid(uid)[0] except KeyError: return str(uid) 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.""" if gid is None: gid = os.getgid() try: return grp.getgrgid(gid)[0] except KeyError: return str(gid)