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"""Module with our own gitdb implementation - it uses the git command"""
from exc import (
GitCommandError,
BadObject
)
from gitdb.base import (
OInfo,
OStream
)
from gitdb.util import (
bin_to_hex,
hex_to_bin
)
from gitdb.db import GitDB
from gitdb.db import LooseObjectDB
__all__ = ('GitCmdObjectDB', 'GitDB' )
#class GitCmdObjectDB(CompoundDB, ObjectDBW):
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, git):
"""Initialize this instance with the root and a git command"""
super(GitCmdObjectDB, self).__init__(root_path)
self._git = git
def info(self, sha):
hexsha, typename, size = self._git.get_object_header(bin_to_hex(sha))
return OInfo(hex_to_bin(hexsha), typename, size)
def stream(self, sha):
"""For now, all lookup is done by git itself"""
hexsha, typename, size, stream = self._git.stream_object_data(bin_to_hex(sha))
return OStream(hex_to_bin(hexsha), typename, size, stream)
# { Interface
def partial_to_complete_sha_hex(self, partial_hexsha):
""":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):
raise BadObject(partial_hexsha)
# END handle exceptions
#} END interface