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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$")
BUILD_NUM_RE = re.compile(br'Build: (\d\w*)$')
def pack(directory, dest_dir, build_number):
"""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('Multiple .dist-info directories found in {}'.format(directory))
elif not dist_info_dirs:
raise WheelError('No .dist-info directories found in {}'.format(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, '{}-{}.whl'.format(name_version, tagline))
with WheelFile(wheel_path, 'w') as wf:
print("Repacking wheel as {}...".format(wheel_path), end='', flush=True)
wf.write_files(directory)
print('OK')
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