File size: 4,034 Bytes
6017349 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 |
import os
import pygit2
from fsspec.spec import AbstractFileSystem
from .memory import MemoryFile
class GitFileSystem(AbstractFileSystem):
"""Browse the files of a local git repo at any hash/tag/branch
(experimental backend)
"""
root_marker = ""
cachable = True
def __init__(self, path=None, fo=None, ref=None, **kwargs):
"""
Parameters
----------
path: str (optional)
Local location of the repo (uses current directory if not given).
May be deprecated in favour of ``fo``. When used with a higher
level function such as fsspec.open(), may be of the form
"git://[path-to-repo[:]][ref@]path/to/file" (but the actual
file path should not contain "@" or ":").
fo: str (optional)
Same as ``path``, but passed as part of a chained URL. This one
takes precedence if both are given.
ref: str (optional)
Reference to work with, could be a hash, tag or branch name. Defaults
to current working tree. Note that ``ls`` and ``open`` also take hash,
so this becomes the default for those operations
kwargs
"""
super().__init__(**kwargs)
self.repo = pygit2.Repository(fo or path or os.getcwd())
self.ref = ref or "master"
@classmethod
def _strip_protocol(cls, path):
path = super()._strip_protocol(path).lstrip("/")
if ":" in path:
path = path.split(":", 1)[1]
if "@" in path:
path = path.split("@", 1)[1]
return path.lstrip("/")
def _path_to_object(self, path, ref):
comm, ref = self.repo.resolve_refish(ref or self.ref)
parts = path.split("/")
tree = comm.tree
for part in parts:
if part and isinstance(tree, pygit2.Tree):
tree = tree[part]
return tree
@staticmethod
def _get_kwargs_from_urls(path):
if path.startswith("git://"):
path = path[6:]
out = {}
if ":" in path:
out["path"], path = path.split(":", 1)
if "@" in path:
out["ref"], path = path.split("@", 1)
return out
def ls(self, path, detail=True, ref=None, **kwargs):
path = self._strip_protocol(path)
tree = self._path_to_object(path, ref)
if isinstance(tree, pygit2.Tree):
out = []
for obj in tree:
if isinstance(obj, pygit2.Tree):
out.append(
{
"type": "directory",
"name": "/".join([path, obj.name]).lstrip("/"),
"hex": obj.hex,
"mode": f"{obj.filemode:o}",
"size": 0,
}
)
else:
out.append(
{
"type": "file",
"name": "/".join([path, obj.name]).lstrip("/"),
"hex": obj.hex,
"mode": f"{obj.filemode:o}",
"size": obj.size,
}
)
else:
obj = tree
out = [
{
"type": "file",
"name": obj.name,
"hex": obj.hex,
"mode": f"{obj.filemode:o}",
"size": obj.size,
}
]
if detail:
return out
return [o["name"] for o in out]
def ukey(self, path, ref=None):
return self.info(path, ref=ref)["hex"]
def _open(
self,
path,
mode="rb",
block_size=None,
autocommit=True,
cache_options=None,
ref=None,
**kwargs,
):
obj = self._path_to_object(path, ref or self.ref)
return MemoryFile(data=obj.data)
|