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File Name : _requirestxt.py

"""Helper code used to generate ``requires.txt`` files in the egg-info directory.

The ``requires.txt`` file has an specific format:
    - Environment markers need to be part of the section headers and
      should not be part of the requirement spec itself.

See https://setuptools.pypa.io/en/latest/deprecated/python_eggs.html#requires-txt
"""
import io
from collections import defaultdict
from itertools import filterfalse
from typing import Dict, List, Tuple, Mapping, TypeVar

from .. import _reqs
from ..extern.jaraco.text import yield_lines
from ..extern.packaging.requirements import Requirement

# dict can work as an ordered set
_T = TypeVar("_T")
_Ordered = Dict[_T, None]
_ordered = dict
_StrOrIter = _reqs._StrOrIter

def _prepare(
    install_requires: _StrOrIter, extras_require: Mapping[str, _StrOrIter]
) -> Tuple[List[str], Dict[str, List[str]]]:
    """Given values for ``install_requires`` and ``extras_require``
    create modified versions in a way that can be written in ``requires.txt``
    """
    extras = _convert_extras_requirements(extras_require)
    return _move_install_requirements_markers(install_requires, extras)

def _convert_extras_requirements(
    extras_require: _StrOrIter,
) -> Mapping[str, _Ordered[Requirement]]:
    """
    Convert requirements in `extras_require` of the form
    `"extra": ["barbazquux; {marker}"]` to
    `"extra:{marker}": ["barbazquux"]`.
    """
    output: Mapping[str, _Ordered[Requirement]] = defaultdict(dict)
    for section, v in extras_require.items():
        # Do not strip empty sections.
        output[section]
        for r in _reqs.parse(v):
            output[section + _suffix_for(r)].setdefault(r)

return output

def _move_install_requirements_markers(
    install_requires: _StrOrIter, extras_require: Mapping[str, _Ordered[Requirement]]
) -> Tuple[List[str], Dict[str, List[str]]]:
    """
    The ``requires.txt`` file has an specific format:
        - Environment markers need to be part of the section headers and
          should not be part of the requirement spec itself.

Move requirements in ``install_requires`` that are using environment
    markers ``extras_require``.
    """

# divide the install_requires into two sets, simple ones still
    # handled by install_requires and more complex ones handled by extras_require.

inst_reqs = list(_reqs.parse(install_requires))
    simple_reqs = filter(_no_marker, inst_reqs)
    complex_reqs = filterfalse(_no_marker, inst_reqs)
    simple_install_requires = list(map(str, simple_reqs))

for r in complex_reqs:
        extras_require[':' + str(r.marker)].setdefault(r)

expanded_extras = dict(
        # list(dict.fromkeys(...))  ensures a list of unique strings
        (k, list(dict.fromkeys(str(r) for r in map(_clean_req, v))))
        for k, v in extras_require.items()
    )

return simple_install_requires, expanded_extras

def _suffix_for(req):
    """Return the 'extras_require' suffix for a given requirement."""
    return ':' + str(req.marker) if req.marker else ''

def _clean_req(req):
    """Given a Requirement, remove environment markers and return it"""
    r = Requirement(str(req))  # create a copy before modifying
    r.marker = None
    return r

def _no_marker(req):
    return not req.marker

def _write_requirements(stream, reqs):
    lines = yield_lines(reqs or ())

def append_cr(line):
        return line + '\n'

lines = map(append_cr, lines)
    stream.writelines(lines)

def write_requirements(cmd, basename, filename):
    dist = cmd.distribution
    data = io.StringIO()
    install_requires, extras_require = _prepare(
        dist.install_requires or (), dist.extras_require or {}
    )
    _write_requirements(data, install_requires)
    for extra in sorted(extras_require):
        data.write('\n[{extra}]\n'.format(**vars()))
        _write_requirements(data, extras_require[extra])
    cmd.write_or_delete_file("requirements", filename, data.getvalue())

def write_setup_requirements(cmd, basename, filename):
    data = io.StringIO()
    _write_requirements(data, cmd.distribution.setup_requires)
    cmd.write_or_delete_file("setup-requirements", filename, data.getvalue())

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/linksafe	0755	2024-06-14 05:06:47
..	dir	-	root/linksafe	0755	2024-06-14 05:06:47
__pycache__	dir	-	root/linksafe	0755	2024-06-14 05:06:47
__init__.py	text/x-script.python	396 B	root/linksafe	0644	2023-12-28 10:57:56
_requirestxt.py	text/plain	4.11 KB	root/linksafe	0644	2023-12-28 10:57:56
alias.py	text/x-script.python	2.33 KB	root/linksafe	0644	2023-12-28 10:57:56
bdist_egg.py	text/plain	16.17 KB	root/linksafe	0644	2023-12-28 10:57:56
bdist_rpm.py	text/x-script.python	1.28 KB	root/linksafe	0644	2023-12-28 10:57:56
build.py	text/x-script.python	6.63 KB	root/linksafe	0644	2023-12-28 10:57:56
build_clib.py	text/x-script.python	4.43 KB	root/linksafe	0644	2023-12-28 10:57:56
build_ext.py	text/x-script.python	17.09 KB	root/linksafe	0644	2023-12-28 10:57:56
build_py.py	text/x-script.python	14.77 KB	root/linksafe	0644	2023-12-28 10:57:56
develop.py	text/x-script.python	6.55 KB	root/linksafe	0644	2023-12-28 10:57:56
dist_info.py	text/plain	3.48 KB	root/linksafe	0644	2023-12-28 10:57:56
easy_install.py	text/plain	84.42 KB	root/linksafe	0644	2023-12-28 10:57:56
editable_wheel.py	text/plain	32.97 KB	root/linksafe	0644	2023-12-28 10:57:56
egg_info.py	text/plain	25.9 KB	root/linksafe	0644	2023-12-28 10:57:56
install.py	text/x-script.python	5.5 KB	root/linksafe	0644	2023-12-28 10:57:56
install_egg_info.py	text/x-script.python	2.02 KB	root/linksafe	0644	2023-12-28 10:57:56
install_lib.py	text/x-script.python	3.78 KB	root/linksafe	0644	2023-12-28 10:57:56
install_scripts.py	text/x-script.python	2.3 KB	root/linksafe	0644	2023-12-28 10:57:56
launcher manifest.xml	text/xml	628 B	root/root	0644	2023-12-28 10:57:56
register.py	text/x-script.python	468 B	root/linksafe	0644	2023-12-28 10:57:56
rotate.py	text/x-script.python	2.05 KB	root/linksafe	0644	2023-12-28 10:57:56
saveopts.py	text/x-script.python	657 B	root/linksafe	0644	2023-12-28 10:57:56
sdist.py	text/x-script.python	6.92 KB	root/linksafe	0644	2023-12-28 10:57:56
setopt.py	text/x-script.python	4.81 KB	root/linksafe	0644	2023-12-28 10:57:56
test.py	text/x-script.python	7.91 KB	root/linksafe	0644	2023-12-28 10:57:56
upload.py	text/x-script.python	462 B	root/linksafe	0644	2023-12-28 10:57:56
upload_docs.py	text/plain	7.57 KB	root/linksafe	0644	2023-12-28 10:57:56

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