from pip._vendor.pkg_resources import yield_lines
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from pip._vendor.six import ensure_str
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from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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if MYPY_CHECK_RUNNING:
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from typing import Dict, Iterable, List
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class DictMetadata(object):
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"""IMetadataProvider that reads metadata files from a dictionary.
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"""
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def __init__(self, metadata):
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# type: (Dict[str, bytes]) -> None
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self._metadata = metadata
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def has_metadata(self, name):
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# type: (str) -> bool
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return name in self._metadata
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def get_metadata(self, name):
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# type: (str) -> str
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try:
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return ensure_str(self._metadata[name])
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except UnicodeDecodeError as e:
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# Mirrors handling done in pkg_resources.NullProvider.
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e.reason += " in {} file".format(name)
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raise
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def get_metadata_lines(self, name):
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# type: (str) -> Iterable[str]
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return yield_lines(self.get_metadata(name))
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def metadata_isdir(self, name):
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# type: (str) -> bool
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return False
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def metadata_listdir(self, name):
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# type: (str) -> List[str]
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return []
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def run_script(self, script_name, namespace):
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# type: (str, str) -> None
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pass
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