C///

\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// # This file is dual licensed under the terms of the Apache License, Version # 2.0, and the BSD License. See the LICENSE file in the root of this repository # for complete details. from __future__ import absolute_import, division, print_function import operator import os import platform import sys from pyparsing import ParseException, ParseResults, stringStart, stringEnd from pyparsing import ZeroOrMore, Group, Forward, QuotedString from pyparsing import Literal as L # noqa from ._compat import string_types from .specifiers import Specifier, InvalidSpecifier __all__ = [ "InvalidMarker", "UndefinedComparison", "UndefinedEnvironmentName", "Marker", "default_environment", ] class InvalidMarker(ValueError): """ An invalid marker was found, users should refer to PEP 508. """ class UndefinedComparison(ValueError): """ An invalid operation was attempted on a value that doesn't support it. """ class UndefinedEnvironmentName(ValueError): """ A name was attempted to be used that does not exist inside of the environment. """ class Node(object): def __init__(self, value): self.value = value def __str__(self): return str(self.value) def __repr__(self): return "<{0}({1!r})>".format(self.__class__.__name__, str(self)) def serialize(self): raise NotImplementedError class Variable(Node): def serialize(self): return str(self) class Value(Node): def serialize(self): return '"{0}"'.format(self) class Op(Node): def serialize(self): return str(self) VARIABLE = ( L("implementation_version") | L("platform_python_implementation") | L("implementation_name") | L("python_full_version") | L("platform_release") | L("platform_version") | L("platform_machine") | L("platform_system") | L("python_version") | L("sys_platform") | L("os_name") | L("os.name") | # PEP-345 L("sys.platform") | # PEP-345 L("platform.version") | # PEP-345 L("platform.machine") | # PEP-345 L("platform.python_implementation") | # PEP-345 L("python_implementation") | # undocumented setuptools legacy L("extra") ) ALIASES = { 'os.name': 'os_name', 'sys.platform': 'sys_platform', 'platform.version': 'platform_version', 'platform.machine': 'platform_machine', 'platform.python_implementation': 'platform_python_implementation', 'python_implementation': 'platform_python_implementation' } VARIABLE.setParseAction(lambda s, l, t: Variable(ALIASES.get(t[0], t[0]))) VERSION_CMP = ( L("===") | L("==") | L(">=") | L("<=") | L("!=") | L("~=") | L(">") | L("<") ) MARKER_OP = VERSION_CMP | L("not in") | L("in") MARKER_OP.setParseAction(lambda s, l, t: Op(t[0])) MARKER_VALUE = QuotedString("'") | QuotedString('"') MARKER_VALUE.setParseAction(lambda s, l, t: Value(t[0])) BOOLOP = L("and") | L("or") MARKER_VAR = VARIABLE | MARKER_VALUE MARKER_ITEM = Group(MARKER_VAR + MARKER_OP + MARKER_VAR) MARKER_ITEM.setParseAction(lambda s, l, t: tuple(t[0])) LPAREN = L("(").suppress() RPAREN = L(")").suppress() MARKER_EXPR = Forward() MARKER_ATOM = MARKER_ITEM | Group(LPAREN + MARKER_EXPR + RPAREN) MARKER_EXPR << MARKER_ATOM + ZeroOrMore(BOOLOP + MARKER_EXPR) MARKER = stringStart + MARKER_EXPR + stringEnd def _coerce_parse_result(results): if isinstance(results, ParseResults): return [_coerce_parse_result(i) for i in results] else: return results def _format_marker(marker, first=True): assert isinstance(marker, (list, tuple, string_types)) # Sometimes we have a structure like [[...]] which is a single item list # where the single item is itself it's own list. In that case we want skip # the rest of this function so that we don't get extraneous () on the # outside. if (isinstance(marker, list) and len(marker) == 1 and isinstance(marker[0], (list, tuple))): return _format_marker(marker[0]) if isinstance(marker, list): inner = (_format_marker(m, first=False) for m in marker) if first: return " ".join(inner) else: return "(" + " ".join(inner) + ")" elif isinstance(marker, tuple): return " ".join([m.serialize() for m in marker]) else: return marker _operators = { "in": lambda lhs, rhs: lhs in rhs, "not in": lambda lhs, rhs: lhs not in rhs, "<": operator.lt, "<=": operator.le, "==": operator.eq, "!=": operator.ne, ">=": operator.ge, ">": operator.gt, } def _eval_op(lhs, op, rhs): try: spec = Specifier("".join([op.serialize(), rhs])) except InvalidSpecifier: pass else: return spec.contains(lhs) oper = _operators.get(op.serialize()) if oper is None: raise UndefinedComparison( "Undefined {0!r} on {1!r} and {2!r}.".format(op, lhs, rhs) ) return oper(lhs, rhs) _undefined = object() def _get_env(environment, name): value = environment.get(name, _undefined) if value is _undefined: raise UndefinedEnvironmentName( "{0!r} does not exist in evaluation environment.".format(name) ) return value def _evaluate_markers(markers, environment): groups = [[]] for marker in markers: assert isinstance(marker, (list, tuple, string_types)) if isinstance(marker, list): groups[-1].append(_evaluate_markers(marker, environment)) elif isinstance(marker, tuple): lhs, op, rhs = marker if isinstance(lhs, Variable): lhs_value = _get_env(environment, lhs.value) rhs_value = rhs.value else: lhs_value = lhs.value rhs_value = _get_env(environment, rhs.value) groups[-1].append(_eval_op(lhs_value, op, rhs_value)) else: assert marker in ["and", "or"] if marker == "or": groups.append([]) return any(all(item) for item in groups) def format_full_version(info): version = '{0.major}.{0.minor}.{0.micro}'.format(info) kind = info.releaselevel if kind != 'final': version += kind[0] + str(info.serial) return version def default_environment(): if hasattr(sys, 'implementation'): iver = format_full_versio