Source code for pex.fetcher

# Copyright 2014 Pants project contributors (see
# Licensed under the Apache License, Version 2.0 (see LICENSE).

from __future__ import absolute_import

import re
import warnings
from abc import abstractmethod

from .base import maybe_requirement
from .compatibility import PY3, AbstractClass

if PY3:
  import urllib.parse as urlparse
  from urllib.parse import urljoin
  import urlparse
  from urlparse import urljoin

[docs]def normalize_name(name): """Normalize package name according to PEP-503""" return re.sub(r"[-_.]+", "-", name).lower()
[docs]class FetcherBase(AbstractClass): """ A fetcher takes a Requirement and tells us where to crawl to find it. """ @abstractmethod def urls(self, req): raise NotImplementedError
class Fetcher(FetcherBase): def __init__(self, urls): self._urls = urls def urls(self, _): return self._urls def __eq__(self, other): if not isinstance(other, Fetcher): return False return self._urls == other._urls class PyPIFetcher(FetcherBase): PYPI_BASE = '' def __init__(self, pypi_base=PYPI_BASE, use_mirrors=False): if use_mirrors: warnings.warn('use_mirrors is now deprecated.') if not pypi_base.endswith('/'): pypi_base += '/' pypi_url = urlparse.urlparse(pypi_base) if not pypi_url.scheme: self._pypi_base = 'http://' + pypi_base else: self._pypi_base = pypi_base def urls(self, req): req = maybe_requirement(req) return [urljoin(self._pypi_base, '%s/' % normalize_name(req.project_name))] def __eq__(self, other): if not isinstance(other, PyPIFetcher): return False return self._pypi_base == other._pypi_base def __repr__(self): return 'PyPIFetcher(%r)' % self._pypi_base