Differential D2463 Diff 8763 swh/loader/package/utils.py

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swh/loader/package/utils.py

# Copyright (C) 2019 The Software Heritage developers		# Copyright (C) 2019 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution		# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version		# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information		# See top-level LICENSE file for more information

import copy		import copy
import logging		import logging
import os		import os
import requests		import requests
		import re

from typing import Dict, Optional, Tuple		from typing import Dict, Optional, Tuple

from swh.model.hashutil import MultiHash, HASH_BLOCK_SIZE		from swh.model.hashutil import MultiHash, HASH_BLOCK_SIZE
from swh.loader.package import DEFAULT_PARAMS		from swh.loader.package import DEFAULT_PARAMS


logger = logging.getLogger(__name__)		logger = logging.getLogger(__name__)


		# https://github.com/jonschlinkert/author-regex
		_author_regexp = r'([^<(]+?)?[ \t](?:<([^>(]+?)>)?[ \t](?:$([^)]+?)$\|$)'


		_EMPTY_AUTHOR = {'fullname': b'', 'name': None, 'email': None}


def api_info(url: str) -> Dict:		def api_info(url: str) -> Dict:
"""Basic api client to retrieve information on project. This deals with		"""Basic api client to retrieve information on project. This deals with
fetching json metadata about pypi projects.		fetching json metadata about pypi projects.

Args:		Args:
url (str): The api url (e.g PyPI, npm, etc...)		url (str): The api url (e.g PyPI, npm, etc...)

Raises:		Raises:
▲ Show 20 Lines • Show All 84 Lines • ▼ Show 20 Lines	def download(url: str, dest: str, hashes: Dict = {},

return filepath, extrinsic_metadata		return filepath, extrinsic_metadata


def release_name(version: str, filename: Optional[str] = None) -> str:		def release_name(version: str, filename: Optional[str] = None) -> str:
if filename:		if filename:
return 'releases/%s/%s' % (version, filename)		return 'releases/%s/%s' % (version, filename)
return 'releases/%s' % version		return 'releases/%s' % version


		def parse_author(author_str: str) -> Dict[str, str]:
		"""
		Parse npm package author string.

		It works with a flexible range of formats, as detailed below::

		name
		name <email> (url)
		name <email>(url)
		name<email> (url)
		name<email>(url)
		name (url) <email>
		name (url)<email>
		name(url) <email>
		name(url)<email>
		name (url)
		name(url)
		name <email>
		name<email>
		<email> (url)
		<email>(url)
		(url) <email>
		(url)<email>
		<email>
		(url)

		Args:
		author_str (str): input author string

		Returns:
		dict: A dict that may contain the following keys:
		* name
		* email
		* url

		"""
		author = {}
		matches = re.findall(_author_regexp,
		author_str.replace('<>', '').replace('()', ''),
		re.M)
		for match in matches:
		if match[0].strip():
		author['name'] = match[0].strip()
		if match[1].strip():
		author['email'] = match[1].strip()
		if match[2].strip():
		author['url'] = match[2].strip()
		return author


		def swh_author(author: Dict[str, str]) -> Dict[str, Optional[bytes]]:
		"""Transform an author like dict to an expected swh like dict (values are
		bytes)

		"""
		name = author.get('name')
		email = author.get('email')

		fullname = None

		if name and email:
		fullname = '%s <%s>' % (name, email)
		elif name:
		fullname = name

		if not fullname:
		r = _EMPTY_AUTHOR
		else:
		r = {
		'fullname': fullname.encode('utf-8') if fullname else None,
		'name': name.encode('utf-8') if name else None,
		'email': email.encode('utf-8') if email else None
		}
		return r