create_dist_summary.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""
MIT License

Copyright (c) 2021 Devon (Gorialis) R

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
"""

import hashlib
import os
import pathlib
import subprocess
import typing

import pkg_resources
from jinja2 import Environment
from jinja2.environment import Template
from jinja2.loaders import BaseLoader


class File(typing.NamedTuple):
    """
    Artifact file descriptor
    """
    name: str
    md5: str
    sha1: str
    sha256: str


ENVIRONMENT = Environment(loader=BaseLoader())
FILES: typing.List[File] = []

for file in pathlib.Path('dist').iterdir():
    if file.is_file() and file.name.lower().endswith(('.whl', '.egg', '.tar.gz')):
        with open(file, 'rb') as fp:
            data = fp.read()

        FILES.append(File(
            name=file.name,
            md5=hashlib.md5(data).hexdigest(),
            sha1=hashlib.sha1(data).hexdigest(),
            sha256=hashlib.sha256(data).hexdigest()
        ))

process = subprocess.Popen(
    ['git', 'tag', '-l', '--sort=version:refname'],
    stdout=subprocess.PIPE,
    stderr=subprocess.PIPE
)

tags, err = process.communicate()
tags = tags.decode('utf-8').strip().split('\n')

while tags[-1].lower().strip() == (os.getenv('tag_name') or '').lower().strip():
    tags.pop(-1)

last_version = tags[-1]

process = subprocess.Popen(
    ['git', 'rev-parse', '--short', 'HEAD'],
    stdout=subprocess.PIPE,
    stderr=subprocess.PIPE
)

commit_hash, err = process.communicate()
commit_hash = commit_hash.decode('utf-8').strip()

with open('dist_summary.jinja2', 'r', encoding='utf-8') as fp:
    template: Template = ENVIRONMENT.from_string(fp.read())

with open('dist/DIST_SUMMARY.md', 'w', encoding='utf-8') as fp:
    output = template.render(
        env=os.getenv,
        package=pkg_resources.get_distribution('jishaku'),
        files=FILES,
        last_version=last_version,
        commit_hash=commit_hash,
    )

    # Jinja loves obliterating trailing newlines
    if not output.endswith('\n'):
        output += '\n'

    fp.write(output)