mirror of
https://github.com/NixOS/nixpkgs.git
synced 2025-01-16 01:45:11 +00:00
132 lines
3.8 KiB
Python
Executable File
132 lines
3.8 KiB
Python
Executable File
#!/usr/bin/env nix-shell
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#!nix-shell -p nix -p python3 -p git -i python
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# USAGE - just run the script: ./update.py
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# When editing this file, make also sure it passes the mypy typecheck
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# and is formatted with black.
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import fileinput
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import json
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import re
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import subprocess
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import tempfile
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import urllib.request
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from datetime import datetime
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from pathlib import Path
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from typing import Dict
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def sh(*args: str) -> str:
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out = subprocess.check_output(list(args))
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return out.strip().decode("utf-8")
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def prefetch_github(owner: str, repo: str, ref: str) -> str:
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return sh(
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"nix-prefetch-url",
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"--unpack",
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f"https://github.com/{owner}/{repo}/archive/{ref}.tar.gz",
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)
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def get_radare2_rev() -> str:
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url = "https://api.github.com/repos/radare/radare2/releases/latest"
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with urllib.request.urlopen(url) as response:
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release = json.load(response) # type: ignore
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return release["tag_name"]
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def get_r2_cutter_rev() -> str:
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url = "https://api.github.com/repos/radareorg/cutter/contents/"
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with urllib.request.urlopen(url) as response:
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data = json.load(response) # type: ignore
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for entry in data:
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if entry["name"] == "radare2":
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return entry["sha"]
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raise Exception("no radare2 submodule found in github.com/radareorg/cutter")
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def git(dirname: str, *args: str) -> str:
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return sh("git", "-C", dirname, *args)
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def get_repo_info(dirname: str, rev: str) -> Dict[str, str]:
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sha256 = prefetch_github("radare", "radare2", rev)
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cs_tip = None
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with open(Path(dirname).joinpath("shlr", "Makefile")) as makefile:
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for l in makefile:
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match = re.match("CS_TIP=(\S+)", l)
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if match:
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cs_tip = match.group(1)
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assert cs_tip is not None
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cs_sha256 = prefetch_github("aquynh", "capstone", cs_tip)
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return dict(
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rev=rev,
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sha256=sha256,
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version_commit=git(dirname, "rev-list", "--all", "--count"),
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gittap=git(dirname, "describe", "--tags", "--match", "[0-9]*"),
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gittip=git(dirname, "rev-parse", "HEAD"),
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cs_tip=cs_tip,
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cs_sha256=cs_sha256,
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)
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def write_package_expr(version: str, info: Dict[str, str]) -> str:
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return f"""generic {{
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version_commit = "{info["version_commit"]}";
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gittap = "{info["gittap"]}";
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gittip = "{info["gittip"]}";
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rev = "{info["rev"]}";
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version = "{version}";
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sha256 = "{info["sha256"]}";
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cs_tip = "{info["cs_tip"]}";
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cs_sha256 = "{info["cs_sha256"]}";
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}}"""
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def main() -> None:
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radare2_rev = get_radare2_rev()
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r2_cutter_rev = get_r2_cutter_rev()
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with tempfile.TemporaryDirectory() as dirname:
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git(
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dirname,
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"clone",
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"--branch",
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radare2_rev,
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"https://github.com/radare/radare2",
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".",
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)
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nix_file = str(Path(__file__).parent.joinpath("default.nix"))
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radare2_info = get_repo_info(dirname, radare2_rev)
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git(dirname, "checkout", r2_cutter_rev)
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timestamp = git(dirname, "log", "-n1", "--format=%at")
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r2_cutter_version = datetime.fromtimestamp(int(timestamp)).strftime("%Y-%m-%d")
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r2_cutter_info = get_repo_info(dirname, r2_cutter_rev)
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in_block = False
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with fileinput.FileInput(nix_file, inplace=True) as f:
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for l in f:
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if "#<generated>" in l:
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in_block = True
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print(
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f""" #<generated>
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# DO NOT EDIT! Automatically generated by ./update.py
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radare2 = {write_package_expr(radare2_rev, radare2_info)};
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r2-for-cutter = {write_package_expr(r2_cutter_version, r2_cutter_info)};
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#</generated>"""
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)
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elif "#</generated>" in l:
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in_block = False
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elif not in_block:
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print(l, end="")
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if __name__ == "__main__":
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main()
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