"""

dirstate.py - working directory tracking for mercurial

Copyright 2005-2007 Matt Mackall <mpm@selenic.com>

This software may be used and distributed according to the terms

of the GNU General Public License, incorporated herein by reference.

"""

from node import nullid

from i18n import _

import struct, os, bisect, stat, strutil, util, errno, ignore

import cStringIO, osutil, sys

_unknown = ('?', 0, 0, 0)

_format = ">cllll"

class dirstate(object):

    def __init__(self, opener, ui, root):

        self._opener = opener

        self._root = root

        self._dirty = False

        self._dirtypl = False

        self._ui = ui

    def __getattr__(self, name):

        if name == '_map':

            self._read()

            return self._map

        elif name == '_copymap':

            self._read()

            return self._copymap

        elif name == '_foldmap':

            _foldmap = {}

            for name in self._map:

                norm = os.path.normcase(os.path.normpath(name))

                _foldmap[norm] = name

            self._foldmap = _foldmap

            return self._foldmap

        elif name == '_branch':

            try:

                self._branch = (self._opener("branch").read().strip()

                                or "default")

            except IOError:

                self._branch = "default"

            return self._branch

        elif name == '_pl':

            self._pl = [nullid, nullid]

            try:

                st = self._opener("dirstate").read(40)

                if len(st) == 40:

                    self._pl = st[:20], st[20:40]

            except IOError, err:

                if err.errno != errno.ENOENT: raise

            return self._pl

        elif name == '_dirs':

            self._dirs = {}

            for f in self._map: