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Add server version to master api
Add IsEvadedOffense to EFPenalty Fix remote log reading in not Windows
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RaidMax
342
Master/env_master/Lib/site-packages/pip/req/req_file.py
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342
Master/env_master/Lib/site-packages/pip/req/req_file.py
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"""
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Requirements file parsing
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"""
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from __future__ import absolute_import
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import os
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import re
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import shlex
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import sys
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import optparse
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import warnings
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from pip._vendor.six.moves.urllib import parse as urllib_parse
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from pip._vendor.six.moves import filterfalse
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import pip
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from pip.download import get_file_content
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from pip.req.req_install import InstallRequirement
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from pip.exceptions import (RequirementsFileParseError)
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from pip.utils.deprecation import RemovedInPip10Warning
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from pip import cmdoptions
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__all__ = ['parse_requirements']
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SCHEME_RE = re.compile(r'^(http|https|file):', re.I)
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COMMENT_RE = re.compile(r'(^|\s)+#.*$')
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SUPPORTED_OPTIONS = [
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cmdoptions.constraints,
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cmdoptions.editable,
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cmdoptions.requirements,
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cmdoptions.no_index,
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cmdoptions.index_url,
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cmdoptions.find_links,
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cmdoptions.extra_index_url,
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cmdoptions.allow_external,
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cmdoptions.allow_all_external,
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cmdoptions.no_allow_external,
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cmdoptions.allow_unsafe,
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cmdoptions.no_allow_unsafe,
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cmdoptions.use_wheel,
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cmdoptions.no_use_wheel,
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cmdoptions.always_unzip,
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cmdoptions.no_binary,
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cmdoptions.only_binary,
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cmdoptions.pre,
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cmdoptions.process_dependency_links,
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cmdoptions.trusted_host,
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cmdoptions.require_hashes,
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]
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# options to be passed to requirements
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SUPPORTED_OPTIONS_REQ = [
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cmdoptions.install_options,
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cmdoptions.global_options,
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cmdoptions.hash,
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]
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# the 'dest' string values
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SUPPORTED_OPTIONS_REQ_DEST = [o().dest for o in SUPPORTED_OPTIONS_REQ]
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def parse_requirements(filename, finder=None, comes_from=None, options=None,
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session=None, constraint=False, wheel_cache=None):
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"""Parse a requirements file and yield InstallRequirement instances.
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:param filename: Path or url of requirements file.
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:param finder: Instance of pip.index.PackageFinder.
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:param comes_from: Origin description of requirements.
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:param options: cli options.
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:param session: Instance of pip.download.PipSession.
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:param constraint: If true, parsing a constraint file rather than
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requirements file.
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:param wheel_cache: Instance of pip.wheel.WheelCache
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"""
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if session is None:
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raise TypeError(
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"parse_requirements() missing 1 required keyword argument: "
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"'session'"
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)
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_, content = get_file_content(
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filename, comes_from=comes_from, session=session
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)
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lines_enum = preprocess(content, options)
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for line_number, line in lines_enum:
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req_iter = process_line(line, filename, line_number, finder,
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comes_from, options, session, wheel_cache,
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constraint=constraint)
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for req in req_iter:
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yield req
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def preprocess(content, options):
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"""Split, filter, and join lines, and return a line iterator
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:param content: the content of the requirements file
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:param options: cli options
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"""
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lines_enum = enumerate(content.splitlines(), start=1)
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lines_enum = join_lines(lines_enum)
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lines_enum = ignore_comments(lines_enum)
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lines_enum = skip_regex(lines_enum, options)
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return lines_enum
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def process_line(line, filename, line_number, finder=None, comes_from=None,
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options=None, session=None, wheel_cache=None,
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constraint=False):
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"""Process a single requirements line; This can result in creating/yielding
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requirements, or updating the finder.
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For lines that contain requirements, the only options that have an effect
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are from SUPPORTED_OPTIONS_REQ, and they are scoped to the
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requirement. Other options from SUPPORTED_OPTIONS may be present, but are
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ignored.
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For lines that do not contain requirements, the only options that have an
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effect are from SUPPORTED_OPTIONS. Options from SUPPORTED_OPTIONS_REQ may
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be present, but are ignored. These lines may contain multiple options
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(although our docs imply only one is supported), and all our parsed and
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affect the finder.
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:param constraint: If True, parsing a constraints file.
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:param options: OptionParser options that we may update
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"""
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parser = build_parser()
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defaults = parser.get_default_values()
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defaults.index_url = None
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if finder:
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# `finder.format_control` will be updated during parsing
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defaults.format_control = finder.format_control
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args_str, options_str = break_args_options(line)
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if sys.version_info < (2, 7, 3):
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# Prior to 2.7.3, shlex cannot deal with unicode entries
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options_str = options_str.encode('utf8')
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opts, _ = parser.parse_args(shlex.split(options_str), defaults)
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# preserve for the nested code path
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line_comes_from = '%s %s (line %s)' % (
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'-c' if constraint else '-r', filename, line_number)
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# yield a line requirement
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if args_str:
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isolated = options.isolated_mode if options else False
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if options:
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cmdoptions.check_install_build_global(options, opts)
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# get the options that apply to requirements
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req_options = {}
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for dest in SUPPORTED_OPTIONS_REQ_DEST:
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if dest in opts.__dict__ and opts.__dict__[dest]:
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req_options[dest] = opts.__dict__[dest]
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yield InstallRequirement.from_line(
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args_str, line_comes_from, constraint=constraint,
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isolated=isolated, options=req_options, wheel_cache=wheel_cache
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)
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# yield an editable requirement
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elif opts.editables:
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isolated = options.isolated_mode if options else False
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default_vcs = options.default_vcs if options else None
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yield InstallRequirement.from_editable(
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opts.editables[0], comes_from=line_comes_from,
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constraint=constraint, default_vcs=default_vcs, isolated=isolated,
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wheel_cache=wheel_cache
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)
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# parse a nested requirements file
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elif opts.requirements or opts.constraints:
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if opts.requirements:
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req_path = opts.requirements[0]
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nested_constraint = False
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else:
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req_path = opts.constraints[0]
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nested_constraint = True
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# original file is over http
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if SCHEME_RE.search(filename):
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# do a url join so relative paths work
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req_path = urllib_parse.urljoin(filename, req_path)
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# original file and nested file are paths
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elif not SCHEME_RE.search(req_path):
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# do a join so relative paths work
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req_path = os.path.join(os.path.dirname(filename), req_path)
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# TODO: Why not use `comes_from='-r {} (line {})'` here as well?
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parser = parse_requirements(
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req_path, finder, comes_from, options, session,
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constraint=nested_constraint, wheel_cache=wheel_cache
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)
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for req in parser:
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yield req
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# percolate hash-checking option upward
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elif opts.require_hashes:
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options.require_hashes = opts.require_hashes
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# set finder options
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elif finder:
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if opts.allow_external:
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warnings.warn(
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"--allow-external has been deprecated and will be removed in "
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"the future. Due to changes in the repository protocol, it no "
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"longer has any effect.",
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RemovedInPip10Warning,
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)
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if opts.allow_all_external:
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warnings.warn(
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"--allow-all-external has been deprecated and will be removed "
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"in the future. Due to changes in the repository protocol, it "
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"no longer has any effect.",
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RemovedInPip10Warning,
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)
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if opts.allow_unverified:
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warnings.warn(
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"--allow-unverified has been deprecated and will be removed "
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"in the future. Due to changes in the repository protocol, it "
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"no longer has any effect.",
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RemovedInPip10Warning,
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)
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if opts.index_url:
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finder.index_urls = [opts.index_url]
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if opts.use_wheel is False:
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finder.use_wheel = False
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pip.index.fmt_ctl_no_use_wheel(finder.format_control)
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if opts.no_index is True:
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finder.index_urls = []
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if opts.extra_index_urls:
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finder.index_urls.extend(opts.extra_index_urls)
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if opts.find_links:
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# FIXME: it would be nice to keep track of the source
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# of the find_links: support a find-links local path
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# relative to a requirements file.
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value = opts.find_links[0]
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req_dir = os.path.dirname(os.path.abspath(filename))
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relative_to_reqs_file = os.path.join(req_dir, value)
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if os.path.exists(relative_to_reqs_file):
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value = relative_to_reqs_file
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finder.find_links.append(value)
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if opts.pre:
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finder.allow_all_prereleases = True
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if opts.process_dependency_links:
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finder.process_dependency_links = True
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if opts.trusted_hosts:
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finder.secure_origins.extend(
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("*", host, "*") for host in opts.trusted_hosts)
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def break_args_options(line):
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"""Break up the line into an args and options string. We only want to shlex
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(and then optparse) the options, not the args. args can contain markers
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which are corrupted by shlex.
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"""
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tokens = line.split(' ')
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args = []
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options = tokens[:]
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for token in tokens:
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if token.startswith('-') or token.startswith('--'):
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break
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else:
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args.append(token)
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options.pop(0)
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return ' '.join(args), ' '.join(options)
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def build_parser():
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"""
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Return a parser for parsing requirement lines
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"""
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parser = optparse.OptionParser(add_help_option=False)
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option_factories = SUPPORTED_OPTIONS + SUPPORTED_OPTIONS_REQ
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for option_factory in option_factories:
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option = option_factory()
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parser.add_option(option)
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# By default optparse sys.exits on parsing errors. We want to wrap
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# that in our own exception.
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def parser_exit(self, msg):
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raise RequirementsFileParseError(msg)
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parser.exit = parser_exit
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return parser
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def join_lines(lines_enum):
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"""Joins a line ending in '\' with the previous line (except when following
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comments). The joined line takes on the index of the first line.
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"""
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primary_line_number = None
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new_line = []
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for line_number, line in lines_enum:
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if not line.endswith('\\') or COMMENT_RE.match(line):
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if COMMENT_RE.match(line):
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# this ensures comments are always matched later
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line = ' ' + line
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if new_line:
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new_line.append(line)
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yield primary_line_number, ''.join(new_line)
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new_line = []
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else:
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yield line_number, line
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else:
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if not new_line:
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primary_line_number = line_number
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new_line.append(line.strip('\\'))
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# last line contains \
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if new_line:
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yield primary_line_number, ''.join(new_line)
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# TODO: handle space after '\'.
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def ignore_comments(lines_enum):
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"""
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Strips comments and filter empty lines.
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"""
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for line_number, line in lines_enum:
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line = COMMENT_RE.sub('', line)
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line = line.strip()
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if line:
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yield line_number, line
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def skip_regex(lines_enum, options):
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"""
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Skip lines that match '--skip-requirements-regex' pattern
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Note: the regex pattern is only built once
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"""
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skip_regex = options.skip_requirements_regex if options else None
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if skip_regex:
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pattern = re.compile(skip_regex)
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lines_enum = filterfalse(
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lambda e: pattern.search(e[1]),
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lines_enum)
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return lines_enum
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