/brz/remove-bazaar

# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""Git inventory."""

from bzrlib import (

    errors,

    inventory,

    osutils,

    urlutils,

    )

class GitInventoryEntry(inventory.InventoryEntry):

    def __init__(self, inv, parent_id, hexsha, path, name, executable):

        self.name = name

        self.parent_id = parent_id

        self._inventory = inv

        self._object = None

        self.hexsha = hexsha

        self.path = path

        self.revision = self._inventory.revision_id

        self.executable = executable

        self.file_id = self._inventory.mapping.generate_file_id(path.encode('utf-8'))

    @property

    def object(self):

        if self._object is None:

            self._object = self._inventory.store[self.hexsha]

        return self._object

class GitInventoryFile(GitInventoryEntry):

    def __init__(self, inv, parent_id, hexsha, path, basename, executable):

        super(GitInventoryFile, self).__init__(inv, parent_id, hexsha, path, basename, executable)

        self.kind = 'file'

        self.symlink_target = None

    @property

    def text_sha1(self):

        return osutils.sha_string(self.object.data)

    @property

    def text_size(self):

        return len(self.object.data)

    def kind_character(self):

        """See InventoryEntry.kind_character."""

        return ''

class GitInventoryLink(GitInventoryEntry):

    def __init__(self, inv, parent_id, hexsha, path, basename, executable):

        super(GitInventoryLink, self).__init__(inv, parent_id, hexsha, path, basename, executable)

        self.text_sha1 = None

        self.text_size = None

        self.kind = 'symlink'

    @property

    def symlink_target(self):

        return self.object.data

    def kind_character(self):

        """See InventoryEntry.kind_character."""

        return ''

class GitInventoryDirectory(GitInventoryEntry):

    def __init__(self, inv, parent_id, hexsha, path, basename, executable):

        super(GitInventoryDirectory, self).__init__(inv, parent_id, hexsha, path, basename, executable)

        self.text_sha1 = None

        self.text_size = None

        self.symlink_target = None

        self.kind = 'directory'

    def kind_character(self):

        """See InventoryEntry.kind_character."""

        return '/'

    @property

    def children(self):

        ret = {}

        for mode, name, hexsha in self.object.entries():

            basename = name.decode("utf-8")

            child_path = osutils.pathjoin(self.path, basename)

            entry_kind = (mode & 0700000) / 0100000

            fs_mode = mode & 0777

            executable = bool(fs_mode & 0111)

            if entry_kind == 0:

                kind_class = GitInventoryDirectory

            elif entry_kind == 1:

                file_kind = (mode & 070000) / 010000

                if file_kind == 0:

                    kind_class = GitInventoryFile

                elif file_kind == 2:

                    kind_class = GitInventoryLink

                else:

                    raise AssertionError(

                        "Unknown file kind, perms=%o." % (mode,))

            else:

                raise AssertionError(

                    "Unknown blob kind, perms=%r." % (mode,))

            ret[basename] = kind_class(self._inventory, self.file_id, hexsha, child_path, basename, executable)

        return ret

class GitInventory(inventory.Inventory):

    def __init__(self, tree_id, mapping, store, revision_id):

        super(GitInventory, self).__init__(revision_id)

        self.store = store

        self.mapping = mapping

        self.root = GitInventoryDirectory(self, None, tree_id, "", "", False)

    def _get_ie(self, path):

        parts = path.split("/")

        ie = self.root

        for name in parts:

            ie = ie.children[name] 

        return ie

    def has_filename(self, path):

        try:

            self._get_ie(path)

            return True

        except KeyError:

            return False

    def has_id(self, file_id):

        try:

            self.id2path(file_id)

            return True

        except errors.NoSuchId:

            return False

    def id2path(self, file_id):

        path = self.mapping.parse_file_id(file_id)

        try:

            ie = self._get_ie(path)

            assert ie.path == path

        except KeyError:

            raise errors.NoSuchId(None, file_id)

    def path2id(self, path):

        try:

            return self._get_ie(path).file_id

        except KeyError:

            return None

    def __getitem__(self, file_id):

        if file_id == inventory.ROOT_ID:

            return self.root

        path = self.mapping.parse_file_id(file_id)

        return self._get_ie(path)