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#!/usr/bin/python3
import lzma
import re
import subprocess
import sys
verbose = False
def log(msg):
if verbose:
sys.stderr.write(f"{msg}\n")
sys.stderr.flush()
def parse(para):
name = None
version = None
for line in para.splitlines():
if line.startswith("Package:"):
name = line.split()[1]
elif line.startswith("Version:"):
version = line.split()[1]
return name, version
def crate_name(name):
if not name.startswith("librust-"):
return None
name = strip_prefix(name, "librust-")
name = strip_suffix(name, "-dev")
return name
def strip_prefix(s, prefix):
if s.startswith(prefix):
return s[len(prefix) :]
else:
return s
def strip_suffix(s, suffix):
if s.endswith(suffix):
return s[: -len(suffix)]
else:
return s
def crate_version(version):
if "+really" in version:
version = version.split("really")[-1]
version = strip_prefix(version, ".")
elif "+" in version:
version = version.split("+", 1)[0]
version = "-".join(version.split("~"))
parts = version.split("-")
if len(parts) == 1:
return parts[0]
else:
return "-".join(parts[:-1])
output = subprocess.run(
[
"curl",
"-s",
"http://deb.debian.org/debian/dists/unstable/main/binary-amd64/Packages.xz",
],
check=True,
capture_output=True,
)
packages = lzma.decompress(output.stdout).decode("UTF8")
paras = packages.split("\n\n")
for para in paras:
(name, version) = parse(para)
if name is not None and version is not None:
crate = crate_name(name)
v = crate_version(version)
log(f"Debian package {name} -> {crate}, {version} -> {v}")
if crate is not None:
print(crate, v)
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