/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."""

import stat

from dulwich.objects import (

    Blob,

    Tree,

    )

from bzrlib import (

    errors,

    inventory,

    osutils,

    ui,

    urlutils,

    )

class GitInventoryEntry(inventory.InventoryEntry):

    _git_class = None

    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]

            assert isinstance(self._object, self._git_class), \

                    "Expected instance of %r, got %r" % \

                    (self._git_class, self._object)

        return self._object

class GitInventoryFile(GitInventoryEntry):

    _git_class = Blob

    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.text_id = None

        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 __repr__(self):

        return ("%s(%r, %r, parent_id=%r, sha1=%r, len=%s, revision=%s)"

                % (self.__class__.__name__,

                   self.file_id,

                   self.name,

                   self.parent_id,

                   self.text_sha1,

                   self.text_size,

                   self.revision))

    def kind_character(self):

        """See InventoryEntry.kind_character."""

        return ''

    def copy(self):

        other = inventory.InventoryFile(self.file_id, self.name, self.parent_id)

        other.executable = self.executable

        other.text_id = self.text_id

        other.text_sha1 = self.text_sha1

        other.text_size = self.text_size

        other.revision = self.revision

        return other

class GitInventoryLink(GitInventoryEntry):

    _git_class = Blob

    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 ''

    def copy(self):

        other = inventory.InventoryLink(self.file_id, self.name, self.parent_id)

        other.symlink_target = self.symlink_target

        other.revision = self.revision

        return other

class GitInventoryDirectory(GitInventoryEntry):

    _git_class = Tree

    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'

        self._children = None

    def kind_character(self):

        """See InventoryEntry.kind_character."""

        return '/'

    @property

    def children(self):

        if self._children is None:

            self._retrieve_children()

        return self._children

    def _retrieve_children(self):

        self._children = {}

        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,))

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

    def copy(self):

        other = inventory.InventoryDirectory(self.file_id, self.name, 

                                             self.parent_id)

        other.revision = self.revision

        # note that children are *not* copied; they're pulled across when

        # others are added

        return other

class GitInventory(inventory.Inventory):

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

        super(GitInventory, self).__init__(revision_id=revision_id)

        self.store = store

        self.mapping = mapping

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

        try:

            return self._get_ie(path)

        except KeyError:

            raise errors.NoSuchId(None, file_id)

class GitIndexInventory(inventory.Inventory):

    """Inventory that retrieves its contents from an index file."""

    def __init__(self, basis_inventory, mapping, index):

        super(GitIndexInventory, self).__init__(revision_id=None, root_id=basis_inventory.root.file_id)

        self.basis_inv = basis_inventory

        self.mapping = mapping

        self.index = index

        pb = ui.ui_factory.nested_progress_bar()

        try:

            for i, (path, value) in enumerate(self.index.iteritems()):

                pb.update("creating working inventory from index", 

                        i, len(self.index))

                assert isinstance(path, str)

                assert isinstance(value, tuple) and len(value) == 10

                (ctime, mtime, ino, dev, mode, uid, gid, size, sha, flags) = value

                try:

                    old_ie = self.basis_inv._get_ie(path)

                except KeyError:

                    old_ie = None

                if old_ie is None:

                    file_id = self.mapping.generate_file_id(path)

                else:

                    file_id = old_ie.file_id

                if stat.S_ISLNK(mode):

                    kind = 'symlink'

                else:

                    assert stat.S_ISREG(mode)

                    kind = 'file'

                if old_ie is not None and old_ie.hexsha == sha:

                    # Hasn't changed since basis inv

                    self.add_parents(path)

                    self.add(old_ie)

                else:

                    ie = self.add_path(path, kind, file_id, self.add_parents(path))

                    ie.revision = None

        finally:

            pb.finished()

    def add_parents(self, path):

        dirname, _ = osutils.split(path)

        file_id = self.path2id(dirname)

        if file_id is None:

            if dirname == "":

                parent_fid = None

            else:

                parent_fid = self.add_parents(dirname)

            ie = self.add_path(dirname, 'directory', 

                    self.mapping.generate_file_id(dirname), parent_fid)

            if ie.file_id in self.basis_inv:

                ie.revision = self.basis_inv[ie.file_id].revision

            file_id = ie.file_id

        return file_id