--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/lib/python3.8/site-packages/wheel/metadata.py	Tue Mar 18 17:55:14 2025 -0400
@@ -0,0 +1,183 @@
+"""
+Tools for converting old- to new-style metadata.
+"""
+
+from __future__ import annotations
+
+import functools
+import itertools
+import os.path
+import re
+import textwrap
+from email.message import Message
+from email.parser import Parser
+from typing import Generator, Iterable, Iterator, Literal
+
+from .vendored.packaging.requirements import Requirement
+
+
+def _nonblank(str: str) -> bool | Literal[""]:
+    return str and not str.startswith("#")
+
+
+@functools.singledispatch
+def yield_lines(iterable: Iterable[str]) -> Iterator[str]:
+    r"""
+    Yield valid lines of a string or iterable.
+    >>> list(yield_lines(''))
+    []
+    >>> list(yield_lines(['foo', 'bar']))
+    ['foo', 'bar']
+    >>> list(yield_lines('foo\nbar'))
+    ['foo', 'bar']
+    >>> list(yield_lines('\nfoo\n#bar\nbaz #comment'))
+    ['foo', 'baz #comment']
+    >>> list(yield_lines(['foo\nbar', 'baz', 'bing\n\n\n']))
+    ['foo', 'bar', 'baz', 'bing']
+    """
+    return itertools.chain.from_iterable(map(yield_lines, iterable))
+
+
+@yield_lines.register(str)
+def _(text: str) -> Iterator[str]:
+    return filter(_nonblank, map(str.strip, text.splitlines()))
+
+
+def split_sections(
+    s: str | Iterator[str],
+) -> Generator[tuple[str | None, list[str]], None, None]:
+    """Split a string or iterable thereof into (section, content) pairs
+    Each ``section`` is a stripped version of the section header ("[section]")
+    and each ``content`` is a list of stripped lines excluding blank lines and
+    comment-only lines.  If there are any such lines before the first section
+    header, they're returned in a first ``section`` of ``None``.
+    """
+    section = None
+    content: list[str] = []
+    for line in yield_lines(s):
+        if line.startswith("["):
+            if line.endswith("]"):
+                if section or content:
+                    yield section, content
+                section = line[1:-1].strip()
+                content = []
+            else:
+                raise ValueError("Invalid section heading", line)
+        else:
+            content.append(line)
+
+    # wrap up last segment
+    yield section, content
+
+
+def safe_extra(extra: str) -> str:
+    """Convert an arbitrary string to a standard 'extra' name
+    Any runs of non-alphanumeric characters are replaced with a single '_',
+    and the result is always lowercased.
+    """
+    return re.sub("[^A-Za-z0-9.-]+", "_", extra).lower()
+
+
+def safe_name(name: str) -> str:
+    """Convert an arbitrary string to a standard distribution name
+    Any runs of non-alphanumeric/. characters are replaced with a single '-'.
+    """
+    return re.sub("[^A-Za-z0-9.]+", "-", name)
+
+
+def requires_to_requires_dist(requirement: Requirement) -> str:
+    """Return the version specifier for a requirement in PEP 345/566 fashion."""
+    if requirement.url:
+        return " @ " + requirement.url
+
+    requires_dist: list[str] = []
+    for spec in requirement.specifier:
+        requires_dist.append(spec.operator + spec.version)
+
+    if requires_dist:
+        return " " + ",".join(sorted(requires_dist))
+    else:
+        return ""
+
+
+def convert_requirements(requirements: list[str]) -> Iterator[str]:
+    """Yield Requires-Dist: strings for parsed requirements strings."""
+    for req in requirements:
+        parsed_requirement = Requirement(req)
+        spec = requires_to_requires_dist(parsed_requirement)
+        extras = ",".join(sorted(safe_extra(e) for e in parsed_requirement.extras))
+        if extras:
+            extras = f"[{extras}]"
+
+        yield safe_name(parsed_requirement.name) + extras + spec
+
+
+def generate_requirements(
+    extras_require: dict[str | None, list[str]],
+) -> Iterator[tuple[str, str]]:
+    """
+    Convert requirements from a setup()-style dictionary to
+    ('Requires-Dist', 'requirement') and ('Provides-Extra', 'extra') tuples.
+
+    extras_require is a dictionary of {extra: [requirements]} as passed to setup(),
+    using the empty extra {'': [requirements]} to hold install_requires.
+    """
+    for extra, depends in extras_require.items():
+        condition = ""
+        extra = extra or ""
+        if ":" in extra:  # setuptools extra:condition syntax
+            extra, condition = extra.split(":", 1)
+
+        extra = safe_extra(extra)
+        if extra:
+            yield "Provides-Extra", extra
+            if condition:
+                condition = "(" + condition + ") and "
+            condition += f"extra == '{extra}'"
+
+        if condition:
+            condition = " ; " + condition
+
+        for new_req in convert_requirements(depends):
+            canonical_req = str(Requirement(new_req + condition))
+            yield "Requires-Dist", canonical_req
+
+
+def pkginfo_to_metadata(egg_info_path: str, pkginfo_path: str) -> Message:
+    """
+    Convert .egg-info directory with PKG-INFO to the Metadata 2.1 format
+    """
+    with open(pkginfo_path, encoding="utf-8") as headers:
+        pkg_info = Parser().parse(headers)
+
+    pkg_info.replace_header("Metadata-Version", "2.1")
+    # Those will be regenerated from `requires.txt`.
+    del pkg_info["Provides-Extra"]
+    del pkg_info["Requires-Dist"]
+    requires_path = os.path.join(egg_info_path, "requires.txt")
+    if os.path.exists(requires_path):
+        with open(requires_path, encoding="utf-8") as requires_file:
+            requires = requires_file.read()
+
+        parsed_requirements = sorted(split_sections(requires), key=lambda x: x[0] or "")
+        for extra, reqs in parsed_requirements:
+            for key, value in generate_requirements({extra: reqs}):
+                if (key, value) not in pkg_info.items():
+                    pkg_info[key] = value
+
+    description = pkg_info["Description"]
+    if description:
+        description_lines = pkg_info["Description"].splitlines()
+        dedented_description = "\n".join(
+            # if the first line of long_description is blank,
+            # the first line here will be indented.
+            (
+                description_lines[0].lstrip(),
+                textwrap.dedent("\n".join(description_lines[1:])),
+                "\n",
+            )
+        )
+        pkg_info.set_payload(dedented_description)
+        del pkg_info["Description"]
+
+    return pkg_info