87 lines
2.7 KiB
Python
Executable file
87 lines
2.7 KiB
Python
Executable file
#! /usr/bin/env nix-shell
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#! nix-shell -i python3 -p python3 python3Packages.beautifulsoup4 python3Packages.requests
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import requests
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import subprocess
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from bs4 import BeautifulSoup
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from pathlib import Path
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from tempfile import NamedTemporaryFile
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from textwrap import indent, dedent
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ARCH_MAP = {
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'x86_64-linux': 'x86_64',
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'i686-linux': 'i386',
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'aarch64-linux': 'arm64',
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'armv7l-linux': 'arm',
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}
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def find_latest_jlink_version() -> str:
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try:
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response = requests.get('https://www.segger.com/downloads/jlink/')
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response.raise_for_status()
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except requests.RequestException as e:
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raise RuntimeError(f"Error fetching J-Link version: {e}")
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soup = BeautifulSoup(response.text, 'html.parser')
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jlink_download_tile = soup.find(lambda tag: tag.name == 'tbody' and "J-Link Software and Documentation pack" in tag.text)
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version_select = jlink_download_tile.find('select')
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version = next(o.text for o in version_select.find_all('option'))
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if version is None:
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raise RuntimeError("Could not find the J-Link version on the download page.")
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return version.removeprefix('V').replace('.', '')
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def nar_hash(url: str) -> str:
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try:
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response = requests.post(url, data={'accept_license_agreement': 'accepted'})
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response.raise_for_status()
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except requests.RequestException as e:
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raise RuntimeError(f"Error downloading file from {url}: {e}")
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with NamedTemporaryFile() as tmpfile:
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tmpfile.write(response.content)
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tmpfile.flush()
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output = subprocess.check_output([
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"nix",
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"--extra-experimental-features", "nix-command",
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"hash", "file", "--sri", tmpfile.name
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]).decode("utf8")
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return output.strip()
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def calculate_package_hashes(version: str) -> list[tuple[str, str, str]]:
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result = []
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for (arch_nix, arch_web) in ARCH_MAP.items():
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url = f"https://www.segger.com/downloads/jlink/JLink_Linux_V{version}_{arch_web}.tgz";
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nhash = nar_hash(url)
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result.append((arch_nix, arch_web, nhash))
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return result
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def update_source(version: str, package_hashes: list[tuple[str, str, str]]):
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content = f'version = "{version}";\n'
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for arch_nix, arch_web, nhash in package_hashes:
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content += dedent(f'''
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{arch_nix} = {{
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name = "{arch_web}";
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hash = "{nhash}";
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}};''').strip() + '\n'
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content = '{\n' + indent(content, ' ') + '}\n'
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with open(Path(__file__).parent / 'source.nix', 'w') as file:
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file.write(content)
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if __name__ == '__main__':
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version = find_latest_jlink_version()
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package_hashes = calculate_package_hashes(version)
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update_source(version, package_hashes)
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