nixpkgs/pkgs/development/tools/analysis/radare2/update.py
2018-05-23 15:45:56 +01:00

73 lines
2.3 KiB
Python
Executable file

#!/usr/bin/env nix-shell
#!nix-shell -p nix -p python3 -p git -i python
# USAGE - just run the script: ./update.py
# When editing this file, make also sure it passes the mypy typecheck
# and is formatted with yapf.
import urllib.request
import json
import tempfile
import subprocess
import fileinput
import re
from pathlib import Path
def sh(*args: str) -> str:
out = subprocess.check_output(list(args))
return out.strip().decode("utf-8")
def prefetch_github(owner: str, repo: str, ref: str) -> str:
return sh("nix-prefetch-url", "--unpack",
f"https://github.com/{owner}/{repo}/archive/{ref}.tar.gz")
def main() -> None:
url = "https://api.github.com/repos/radare/radare2/releases/latest"
with urllib.request.urlopen(url) as response:
release = json.load(response) # type: ignore
version = release["tag_name"]
with tempfile.TemporaryDirectory() as dirname:
def git(*args: str) -> str:
return sh("git", "-C", dirname, *args)
git("clone", "--branch", version, "https://github.com/radare/radare2",
".")
sha256 = prefetch_github("radare", "radare2", version)
nix_file = str(Path(__file__).parent.joinpath("default.nix"))
cs_tip = None
with open(Path(dirname).joinpath("shlr", "Makefile")) as makefile:
for l in makefile:
match = re.match("CS_TIP=(\S+)", l)
if match:
cs_tip = match.group(1)
assert cs_tip is not None
cs_sha256 = prefetch_github("aquynh", "capstone", cs_tip)
in_block = False
with fileinput.FileInput(nix_file, inplace=True) as f:
for l in f:
if "#<generated>" in l:
in_block = True
print(f""" #<generated>
# DO NOT EDIT! Automatically generated by ./update.py
version_commit = "{git("rev-list", "--all", "--count")}";
gittap = "{git("describe", "--tags", "--match", "[0-9]*")}";
gittip = "{git("rev-parse", "HEAD")}";
version = "{version}";
sha256 = "{sha256}";
cs_tip = "{cs_tip}";
cs_sha256 = "{cs_sha256}";
#</generated>""")
elif "#</generated>" in l:
in_block = False
elif not in_block:
print(l, end="")
if __name__ == "__main__":
main()