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"""Module with our own gitdb implementation - it uses the git command"""

from git.util import bin_to_hex, hex_to_bin

from gitdb.base import (

OInfo,

OStream

)

from gitdb.db import GitDB # @UnusedImport

from gitdb.db import LooseObjectDB

from gitdb.exc import BadObject

from git.exc import GitCommandError

# typing-------------------------------------------------

from typing import TYPE_CHECKING

from git.types import PathLike

if TYPE_CHECKING:

from git.cmd import Git

# --------------------------------------------------------

__all__ = ('GitCmdObjectDB', 'GitDB')

class GitCmdObjectDB(LooseObjectDB):

"""A database representing the default git object store, which includes loose

objects, pack files and an alternates file

It will create objects only in the loose object database.

:note: for now, we use the git command to do all the lookup, just until he

have packs and the other implementations

"""

def __init__(self, root_path: PathLike, git: 'Git') -> None:

"""Initialize this instance with the root and a git command"""

super(GitCmdObjectDB, self).__init__(root_path)

self._git = git

def info(self, binsha: bytes) -> OInfo:

hexsha, typename, size = self._git.get_object_header(bin_to_hex(binsha))

return OInfo(hex_to_bin(hexsha), typename, size)

def stream(self, binsha: bytes) -> OStream:

"""For now, all lookup is done by git itself"""

hexsha, typename, size, stream = self._git.stream_object_data(bin_to_hex(binsha))

return OStream(hex_to_bin(hexsha), typename, size, stream)

# { Interface

def partial_to_complete_sha_hex(self, partial_hexsha: str) -> bytes:

""":return: Full binary 20 byte sha from the given partial hexsha

:raise AmbiguousObjectName:

:raise BadObject:

:note: currently we only raise BadObject as git does not communicate

AmbiguousObjects separately"""

try:

hexsha, _typename, _size = self._git.get_object_header(partial_hexsha)

return hex_to_bin(hexsha)

except (GitCommandError, ValueError) as e:

raise BadObject(partial_hexsha) from e

# END handle exceptions

#} END interface

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