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87 lines
2.8 KiB
Python
Executable File
87 lines
2.8 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 collections import namedtuple
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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 = namedtuple('Architecture', ['os', 'name', 'ext'])
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ARCH_MAP = {
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'x86_64-linux': Arch(os='Linux', name='x86_64', ext='tgz'),
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'i686-linux': Arch(os='Linux', name='i386', ext='tgz'),
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'aarch64-linux': Arch(os='Linux', name='arm64', ext='tgz'),
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'armv7l-linux': Arch(os='Linux', name='arm', ext='tgz'),
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'aarch64-darwin': Arch(os='MacOSX', name='arm64', ext='pkg'),
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'x86_64-darwin': Arch(os='MacOSX', name='x86_64', ext='pkg'),
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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(version: str, arch: Arch) -> str:
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'''
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Return the nar hash of 'version' for 'source'.
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'''
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url = f"https://www.segger.com/downloads/jlink/JLink_{arch.os}_V{version}_{arch.name}.{arch.ext}"
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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 update_source(version: str):
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content = f'version = "{version}";\n'
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for arch_nix, arch in ARCH_MAP.items():
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nhash = nar_hash(version, arch)
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content += dedent(f'''
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{arch_nix} = {{
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os = "{arch.os}";
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name = "{arch.name}";
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ext = "{arch.ext}";
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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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update_source(find_latest_jlink_version())
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