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Employee-Management-Portal/Lib/site-packages/pipenv/patched/piptools/utils.py
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Python

# coding: utf-8
from __future__ import absolute_import, division, print_function, unicode_literals
import os
import sys
from collections import OrderedDict
from itertools import chain, groupby
import six
from click.utils import LazyFile
from ._compat import install_req_from_line
from six.moves import shlex_quote
from pipenv.vendor.packaging.specifiers import SpecifierSet, InvalidSpecifier
from pipenv.vendor.packaging.version import Version, InvalidVersion, parse as parse_version
from pipenv.vendor.packaging.markers import Marker, Op, Value, Variable
from ._compat import PIP_VERSION
from .click import style
UNSAFE_PACKAGES = {"setuptools", "distribute", "pip"}
COMPILE_EXCLUDE_OPTIONS = {
"--dry-run",
"--quiet",
"--rebuild",
"--upgrade",
"--upgrade-package",
"--verbose",
"--cache-dir",
}
def simplify_markers(ireq):
"""simplify_markers "This code cleans up markers for a specific :class:`~InstallRequirement`"
Clean and deduplicate markers.
:param ireq: An InstallRequirement to clean
:type ireq: :class:`~pip._internal.req.req_install.InstallRequirement`
:return: An InstallRequirement with cleaned Markers
:rtype: :class:`~pip._internal.req.req_install.InstallRequirement`
"""
if not getattr(ireq, 'markers', None):
return ireq
markers = ireq.markers
marker_list = []
if isinstance(markers, six.string_types):
if ';' in markers:
markers = [Marker(m_str.strip()) for m_str in markers.split(';')]
else:
markers = Marker(markers)
for m in markers._markers:
_single_marker = []
if isinstance(m[0], six.string_types):
continue
if not isinstance(m[0], (list, tuple)):
marker_list.append(''.join([_piece.serialize() for _piece in m]))
continue
for _marker_part in m:
if isinstance(_marker_part, six.string_types):
_single_marker.append(_marker_part)
continue
_single_marker.append(''.join([_piece.serialize() for _piece in _marker_part]))
_single_marker = [_m.strip() for _m in _single_marker]
marker_list.append(tuple(_single_marker,))
marker_str = ' and '.join(list(dedup(tuple(marker_list,)))) if marker_list else ''
new_markers = Marker(marker_str)
ireq.markers = new_markers
new_ireq = install_req_from_line(format_requirement(ireq))
if ireq.constraint:
new_ireq.constraint = ireq.constraint
return new_ireq
def clean_requires_python(candidates):
"""Get a cleaned list of all the candidates with valid specifiers in the `requires_python` attributes."""
all_candidates = []
py_version = parse_version(os.environ.get('PIPENV_REQUESTED_PYTHON_VERSION', '.'.join(map(str, sys.version_info[:3]))))
for c in candidates:
if getattr(c, "requires_python", None):
# Old specifications had people setting this to single digits
# which is effectively the same as '>=digit,<digit+1'
if len(c.requires_python) == 1 and c.requires_python in ("2", "3"):
c.requires_python = '>={0},<{1!s}'.format(c.requires_python, int(c.requires_python) + 1)
try:
specifierset = SpecifierSet(c.requires_python)
except InvalidSpecifier:
continue
else:
if not specifierset.contains(py_version):
continue
all_candidates.append(c)
return all_candidates
def key_from_ireq(ireq):
"""Get a standardized key for an InstallRequirement."""
if ireq.req is None and ireq.link is not None:
return str(ireq.link)
else:
return key_from_req(ireq.req)
def key_from_req(req):
"""Get an all-lowercase version of the requirement's name."""
if hasattr(req, "key"):
# from pkg_resources, such as installed dists for pip-sync
key = req.key
else:
# from packaging, such as install requirements from requirements.txt
key = req.name
key = key.replace("_", "-").lower()
return key
def comment(text):
return style(text, fg="green")
def make_install_requirement(name, version, extras, markers, constraint=False):
# If no extras are specified, the extras string is blank
extras_string = ""
if extras:
# Sort extras for stability
extras_string = "[{}]".format(",".join(sorted(extras)))
if not markers:
return install_req_from_line(
str('{}{}=={}'.format(name, extras_string, version)),
constraint=constraint)
else:
return install_req_from_line(
str('{}{}=={}; {}'.format(name, extras_string, version, str(markers))),
constraint=constraint)
def _requirement_to_str_lowercase_name(requirement):
"""
Formats a packaging.requirements.Requirement with a lowercase name.
This is simply a copy of
https://github.com/pypa/pipenv/patched/packaging/blob/pipenv/patched/16.8/packaging/requirements.py#L109-L124
modified to lowercase the dependency name.
Previously, we were invoking the original Requirement.__str__ method and
lowercasing the entire result, which would lowercase the name, *and* other,
important stuff that should not be lowercased (such as the marker). See
this issue for more information: https://github.com/pypa/pipenv/patched/pipenv/issues/2113.
"""
parts = [requirement.name.lower()]
if requirement.extras:
parts.append("[{0}]".format(",".join(sorted(requirement.extras))))
if requirement.specifier:
parts.append(str(requirement.specifier))
if requirement.url:
parts.append("@ {0}".format(requirement.url))
if requirement.marker:
parts.append("; {0}".format(requirement.marker))
return "".join(parts)
def is_url_requirement(ireq):
"""
Return True if requirement was specified as a path or URL.
ireq.original_link will have been set by InstallRequirement.__init__
"""
return bool(ireq.original_link)
def format_requirement(ireq, marker=None, hashes=None):
"""
Generic formatter for pretty printing InstallRequirements to the terminal
in a less verbose way than using its `__str__` method.
"""
if ireq.editable:
line = "-e {}".format(ireq.link.url)
elif ireq.link and ireq.link.is_vcs:
line = str(ireq.req)
elif is_url_requirement(ireq):
line = ireq.link.url
else:
line = _requirement_to_str_lowercase_name(ireq.req)
if marker and ';' not in line:
line = "{}; {}".format(line, marker)
if hashes:
for hash_ in sorted(hashes):
line += " \\\n --hash={}".format(hash_)
return line
def format_specifier(ireq):
"""
Generic formatter for pretty printing the specifier part of
InstallRequirements to the terminal.
"""
# TODO: Ideally, this is carried over to the pip library itself
specs = ireq.specifier._specs if ireq.req is not None else []
specs = sorted(specs, key=lambda x: x._spec[1])
return ",".join(str(s) for s in specs) or "<any>"
def is_pinned_requirement(ireq):
"""
Returns whether an InstallRequirement is a "pinned" requirement.
An InstallRequirement is considered pinned if:
- Is not editable
- It has exactly one specifier
- That specifier is "=="
- The version does not contain a wildcard
Examples:
django==1.8 # pinned
django>1.8 # NOT pinned
django~=1.8 # NOT pinned
django==1.* # NOT pinned
"""
if ireq.editable:
return False
if ireq.req is None or len(ireq.specifier._specs) != 1:
return False
op, version = next(iter(ireq.specifier._specs))._spec
return (op == "==" or op == "===") and not version.endswith(".*")
def as_tuple(ireq):
"""
Pulls out the (name: str, version:str, extras:(str)) tuple from
the pinned InstallRequirement.
"""
if not is_pinned_requirement(ireq):
raise TypeError("Expected a pinned InstallRequirement, got {}".format(ireq))
name = key_from_ireq(ireq)
version = next(iter(ireq.specifier._specs))._spec[1]
extras = tuple(sorted(ireq.extras))
return name, version, extras
def full_groupby(iterable, key=None):
"""Like groupby(), but sorts the input on the group key first."""
return groupby(sorted(iterable, key=key), key=key)
def flat_map(fn, collection):
"""Map a function over a collection and flatten the result by one-level"""
return chain.from_iterable(map(fn, collection))
def lookup_table(values, key=None, keyval=None, unique=False, use_lists=False):
"""
Builds a dict-based lookup table (index) elegantly.
Supports building normal and unique lookup tables. For example:
>>> assert lookup_table(
... ['foo', 'bar', 'baz', 'qux', 'quux'], lambda s: s[0]) == {
... 'b': {'bar', 'baz'},
... 'f': {'foo'},
... 'q': {'quux', 'qux'}
... }
For key functions that uniquely identify values, set unique=True:
>>> assert lookup_table(
... ['foo', 'bar', 'baz', 'qux', 'quux'], lambda s: s[0],
... unique=True) == {
... 'b': 'baz',
... 'f': 'foo',
... 'q': 'quux'
... }
For the values represented as lists, set use_lists=True:
>>> assert lookup_table(
... ['foo', 'bar', 'baz', 'qux', 'quux'], lambda s: s[0],
... use_lists=True) == {
... 'b': ['bar', 'baz'],
... 'f': ['foo'],
... 'q': ['qux', 'quux']
... }
The values of the resulting lookup table will be lists, not sets.
For extra power, you can even change the values while building up the LUT.
To do so, use the `keyval` function instead of the `key` arg:
>>> assert lookup_table(
... ['foo', 'bar', 'baz', 'qux', 'quux'],
... keyval=lambda s: (s[0], s[1:])) == {
... 'b': {'ar', 'az'},
... 'f': {'oo'},
... 'q': {'uux', 'ux'}
... }
"""
if keyval is None:
if key is None:
def keyval(v):
return v
else:
def keyval(v):
return (key(v), v)
if unique:
return dict(keyval(v) for v in values)
lut = {}
for value in values:
k, v = keyval(value)
try:
s = lut[k]
except KeyError:
if use_lists:
s = lut[k] = list()
else:
s = lut[k] = set()
if use_lists:
s.append(v)
else:
s.add(v)
return dict(lut)
def dedup(iterable):
"""Deduplicate an iterable object like iter(set(iterable)) but
order-preserved.
"""
return iter(OrderedDict.fromkeys(iterable))
def name_from_req(req):
"""Get the name of the requirement"""
if hasattr(req, "project_name"):
# from pkg_resources, such as installed dists for pip-sync
return req.project_name
else:
# from packaging, such as install requirements from requirements.txt
return req.name
def fs_str(string):
"""
Convert given string to a correctly encoded filesystem string.
On Python 2, if the input string is unicode, converts it to bytes
encoded with the filesystem encoding.
On Python 3 returns the string as is, since Python 3 uses unicode
paths and the input string shouldn't be bytes.
:type string: str|unicode
:rtype: str
"""
if isinstance(string, str):
return string
if isinstance(string, bytes):
raise AssertionError
return string.encode(_fs_encoding)
_fs_encoding = sys.getfilesystemencoding() or sys.getdefaultencoding()
def get_hashes_from_ireq(ireq):
"""
Given an InstallRequirement, return a list of string hashes in
the format "{algorithm}:{hash}". Return an empty list if there are no hashes
in the requirement options.
"""
result = []
if PIP_VERSION[:2] <= (20, 0):
ireq_hashes = ireq.options.get("hashes", {})
else:
ireq_hashes = ireq.hash_options
for algorithm, hexdigests in ireq_hashes.items():
for hash_ in hexdigests:
result.append("{}:{}".format(algorithm, hash_))
return result
def force_text(s):
"""
Return a string representing `s`.
"""
if s is None:
return ""
if not isinstance(s, six.string_types):
return six.text_type(s)
return s
def get_compile_command(click_ctx):
"""
Returns a normalized compile command depending on cli context.
The command will be normalized by:
- expanding options short to long
- removing values that are already default
- sorting the arguments
- removing one-off arguments like '--upgrade'
- removing arguments that don't change build behaviour like '--verbose'
"""
from piptools.scripts.compile import cli
# Map of the compile cli options (option name -> click.Option)
compile_options = {option.name: option for option in cli.params}
left_args = []
right_args = []
for option_name, value in click_ctx.params.items():
option = compile_options[option_name]
# Get the latest option name (usually it'll be a long name)
option_long_name = option.opts[-1]
# Collect variadic args separately, they will be added
# at the end of the command later
if option.nargs < 0:
# These will necessarily be src_files
# Re-add click-stripped '--' if any start with '-'
if any(val.startswith("-") and val != "-" for val in value):
right_args.append("--")
right_args.extend([shlex_quote(force_text(val)) for val in value])
continue
# Exclude one-off options (--upgrade/--upgrade-package/--rebuild/...)
# or options that don't change compile behaviour (--verbose/--dry-run/...)
if option_long_name in COMPILE_EXCLUDE_OPTIONS:
continue
# Skip options without a value
if option.default is None and not value:
continue
# Skip options with a default value
if option.default == value:
continue
# Use a file name for file-like objects
if isinstance(value, LazyFile):
value = value.name
# Convert value to the list
if not isinstance(value, (tuple, list)):
value = [value]
for val in value:
# Flags don't have a value, thus add to args true or false option long name
if option.is_flag:
# If there are false-options, choose an option name depending on a value
if option.secondary_opts:
# Get the latest false-option
secondary_option_long_name = option.secondary_opts[-1]
arg = option_long_name if val else secondary_option_long_name
# There are no false-options, use true-option
else:
arg = option_long_name
left_args.append(shlex_quote(arg))
# Append to args the option with a value
else:
if option.name == "pip_args":
# shlex_quote would produce functional but noisily quoted results,
# e.g. --pip-args='--cache-dir='"'"'/tmp/with spaces'"'"''
# Instead, we try to get more legible quoting via repr:
left_args.append(
"{option}={value}".format(
option=option_long_name, value=repr(fs_str(force_text(val)))
)
)
else:
left_args.append(
"{option}={value}".format(
option=option_long_name, value=shlex_quote(force_text(val))
)
)
return " ".join(["pip-compile"] + sorted(left_args) + sorted(right_args))