60 lines
2.2 KiB
Python
Executable file
60 lines
2.2 KiB
Python
Executable file
#!/usr/bin/env nix-shell
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#!nix-shell -I nixpkgs=./. -i python3 -p python3.pkgs.requests python3.pkgs.lxml nix
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from lxml import html
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import json
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import os.path
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import re
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import requests
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import subprocess
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def nix_prefetch_sha256(name):
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return subprocess.run(['nix-prefetch-url', '--type', 'sha256', 'https://optifine.net/download?f=' + name], capture_output=True, text=True).stdout.strip()
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# fetch download page
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sess = requests.session()
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page = sess.get('https://optifine.net/downloads')
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tree = html.fromstring(page.content)
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# parse and extract main jar file names
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href = tree.xpath('//tr[@class="downloadLine downloadLineMain"]/td[@class="colMirror"]/a/@href')
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expr = re.compile('(OptiFine_)([0-9.]*)(.*)\.jar')
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result = [ expr.search(x) for x in href ]
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# format name, version and hash for each file
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catalogue = {}
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for i, r in enumerate(result):
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index = r.group(1).lower() + r.group(2).replace('.', '_')
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version = r.group(2) + r.group(3)
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catalogue[index] = {
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"version": version,
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"sha256": nix_prefetch_sha256(r.group(0))
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}
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# latest version should be the first entry
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if len(catalogue) > 0:
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catalogue['optifine-latest'] = list(catalogue.values())[0]
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# read previous versions
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d = os.path.dirname(os.path.abspath(__file__))
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with open(os.path.join(d, 'versions.json'), 'r') as f:
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prev = json.load(f)
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# `maintainers/scripts/update.py` will extract stdout to write commit message
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# embed the commit message in json and print it
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changes = [ { 'commitMessage': 'optifinePackages: update versions\n\n' } ]
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# build a longest common subsequence, natural sorted by keys
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for key, value in sorted({**prev, **catalogue}.items(), key=lambda item: [int(s) if s.isdigit() else s for s in re.split(r'(\d+)', item[0])]):
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if key not in prev:
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changes[0]['commitMessage'] += 'optifinePackages.{}: init at {}\n'.format(key, value['version'])
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elif value['version'] != prev[key]['version']:
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changes[0]['commitMessage'] += 'optifinePackages.{}: {} -> {}\n'.format(key, prev[key]['version'], value['version'])
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# print the changes in stdout
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print(json.dumps(changes))
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# write catalogue to file
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with open(os.path.join(d, 'versions.json'), 'w') as f:
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json.dump(catalogue, f, indent=4)
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f.write('\n')
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