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