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| 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" | |
| 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 | |
| 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) | |