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"""Source provider for a content root managed by git version control."""
from __future__ import annotations
import os
from ...git import (
Git,
)
from ...encoding import (
to_bytes,
)
from ...util import (
SubprocessError,
)
from . import (
SourceProvider,
)
class GitSource(SourceProvider):
"""Source provider for a content root managed by git version control."""
@staticmethod
def is_content_root(path: str) -> bool:
"""Return True if the given path is a content root for this provider."""
return os.path.exists(os.path.join(path, '.git'))
def get_paths(self, path: str) -> list[str]:
"""Return the list of available content paths under the given path."""
paths = self.__get_paths(path)
try:
submodule_paths = Git(path).get_submodule_paths()
except SubprocessError:
if path == self.root:
raise
# older versions of git require submodule commands to be executed from the top level of the working tree
# git version 2.18.1 (centos8) does not have this restriction
# git version 1.8.3.1 (centos7) does
# fall back to using the top level directory of the working tree only when needed
# this avoids penalizing newer git versions with a potentially slower analysis due to additional submodules
rel_path = os.path.relpath(path, self.root) + os.path.sep
submodule_paths = Git(self.root).get_submodule_paths()
submodule_paths = [os.path.relpath(p, rel_path) for p in submodule_paths if p.startswith(rel_path)]
for submodule_path in submodule_paths:
paths.extend(os.path.join(submodule_path, p) for p in self.__get_paths(os.path.join(path, submodule_path)))
# git reports submodule directories as regular files
paths = [p for p in paths if p not in submodule_paths]
return paths
@staticmethod
def __get_paths(path: str) -> list[str]:
"""Return the list of available content paths under the given path."""
git = Git(path)
paths = git.get_file_names(['--cached', '--others', '--exclude-standard'])
deleted_paths = git.get_file_names(['--deleted'])
paths = sorted(set(paths) - set(deleted_paths))
# directory symlinks are reported by git as regular files but they need to be treated as directories
paths = [path + os.path.sep if os.path.isdir(to_bytes(path)) else path for path in paths]
return paths
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