JezK

Edit File: pack.py

from __future__ import annotations

import os.path
import re

from wheel.cli import WheelError
from wheel.wheelfile import WheelFile

DIST_INFO_RE = re.compile(r"^(?P<namever>(?P<name>.+?)-(?P<ver>\d.*?))\.dist-info$")
BUILD_NUM_RE = re.compile(rb"Build: (\d\w*)$")

def pack(directory: str, dest_dir: str, build_number: str | None):
    """Repack a previously unpacked wheel directory into a new wheel file.

The .dist-info/WHEEL file must contain one or more tags so that the target
    wheel file name can be determined.

:param directory: The unpacked wheel directory
    :param dest_dir: Destination directory (defaults to the current directory)
    """
    # Find the .dist-info directory
    dist_info_dirs = [
        fn
        for fn in os.listdir(directory)
        if os.path.isdir(os.path.join(directory, fn)) and DIST_INFO_RE.match(fn)
    ]
    if len(dist_info_dirs) > 1:
        raise WheelError(f"Multiple .dist-info directories found in {directory}")
    elif not dist_info_dirs:
        raise WheelError(f"No .dist-info directories found in {directory}")

# Determine the target wheel filename
    dist_info_dir = dist_info_dirs[0]
    name_version = DIST_INFO_RE.match(dist_info_dir).group("namever")

# Read the tags and the existing build number from .dist-info/WHEEL
    existing_build_number = None
    wheel_file_path = os.path.join(directory, dist_info_dir, "WHEEL")
    with open(wheel_file_path) as f:
        tags = []
        for line in f:
            if line.startswith("Tag: "):
                tags.append(line.split(" ")[1].rstrip())
            elif line.startswith("Build: "):
                existing_build_number = line.split(" ")[1].rstrip()

if not tags:
            raise WheelError(
                "No tags present in {}/WHEEL; cannot determine target wheel "
                "filename".format(dist_info_dir)
            )

# Set the wheel file name and add/replace/remove the Build tag in .dist-info/WHEEL
    build_number = build_number if build_number is not None else existing_build_number
    if build_number is not None:
        if build_number:
            name_version += "-" + build_number

if build_number != existing_build_number:
            replacement = (
                ("Build: %s\r\n" % build_number).encode("ascii")
                if build_number
                else b""
            )
            with open(wheel_file_path, "rb+") as f:
                wheel_file_content = f.read()
                wheel_file_content, num_replaced = BUILD_NUM_RE.subn(
                    replacement, wheel_file_content
                )
                if not num_replaced:
                    wheel_file_content += replacement

f.seek(0)
                f.truncate()
                f.write(wheel_file_content)

# Reassemble the tags for the wheel file
    impls = sorted({tag.split("-")[0] for tag in tags})
    abivers = sorted({tag.split("-")[1] for tag in tags})
    platforms = sorted({tag.split("-")[2] for tag in tags})
    tagline = "-".join([".".join(impls), ".".join(abivers), ".".join(platforms)])

# Repack the wheel
    wheel_path = os.path.join(dest_dir, f"{name_version}-{tagline}.whl")
    with WheelFile(wheel_path, "w") as wf:
        print(f"Repacking wheel as {wheel_path}...", end="", flush=True)
        wf.write_files(directory)

print("OK")

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