--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mercurial/posix.py Thu Mar 26 13:54:44 2009 -0500
@@ -0,0 +1,222 @@
+"""
+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 os, sys, osutil, errno, stat, getpass
+
+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)
+
+