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