widevine-cdm: refactor

pkgs/by-name/wi/widevine-cdm/update-x86_64.py

···
 #! nix-shell -i python3 -p python3
 
 from __future__ import annotations
-import sys, os, json, base64, re, subprocess, shutil, argparse, urllib.request, time
+import sys, os, json, base64, re, argparse, urllib.request, time
 from typing import Dict, Optional, Tuple
 from pathlib import Path
 
···
 
     sri = hex_to_sri(hv)
     version = extract_ver_from_url(url)
-    return {"platform_key": pkey, "url": url, "hashValue": hv, "sri": sri, "version": version}
-
-def subst_version(file: str, new_version: str) -> str:
-    return re.sub(
-        r'(?m)^(?P<ind>\s*)version\s*=\s*(?P<q>["\'])(?P<v>[^"\']*)(?P=q)\s*;',
-        lambda m: f'{m.group("ind")}version = {m.group("q")}{new_version}{m.group("q")};',
-        file,
-        count=1
-    )
-
-def subst_src_url(file: str, new_url: str) -> str:
-    return re.sub(
-        r'(?m)^(?P<ind>\s*)url\s*=\s*(?P<q>["\'])(?P<v>[^"\']*)(?P=q)\s*;',
-        lambda m: f'{m.group("ind")}url = {m.group("q")}{new_url}{m.group("q")};',
-        file,
-        count=1
-    )
-
-def subst_src_hash(file: str, new_hash: str) -> str:
-    return re.sub(
-        r'(?m)^(?P<ind>\s*)hash\s*=\s*(?P<q>["\'])(?P<v>[^"\']*)(?P=q)\s*;',
-        lambda m: f'{m.group("ind")}hash = {m.group("q")}{new_hash}{m.group("q")};',
-        file,
-        count=1
-    )
+    return {"platform_key": pkey, "url": url, "sri": sri, "version": version}
 
 def main():
     WIDEVINE_DIR = Path(__file__).resolve().parent
-    DEFAULT_FILE = WIDEVINE_DIR / "x86_64-linux.nix"
+    DEFAULT_FILE = WIDEVINE_DIR / "x86_64-manifest.json"
 
     ap = argparse.ArgumentParser()
     ap.add_argument("file", type=Path, nargs="?", default=DEFAULT_FILE)
···
 
     linux_x64 = results["linux_x86_64"]
 
-    txt = args.file.read_text(encoding="utf-8")
-
-    txt = subst_version(txt, linux_x64["version"])
-
-    txt = subst_src_url(txt, linux_x64["url"])
-
-    txt = subst_src_hash(txt, linux_x64["sri"])
-
-    args.file.write_text(txt, encoding="utf-8")
+    args.file.write_text(json.dumps(linux_x64, indent=2) + "\n", encoding="utf-8")
     print("# updated", file=sys.stderr)
 
 if __name__ == "__main__":

pkgs/by-name/wi/widevine-cdm/x86_64-linux.nix

···
   go-crx3,
 }:
 
+let
+  manifest = builtins.fromJSON (builtins.readFile ./x86_64-manifest.json);
+in
+
 stdenv.mkDerivation (finalAttrs: {
-  # version, src.url, and src.hash generated by update-x86_64.py
   pname = "widevine-cdm";
-  version = "4.10.2891.0";
+  version = manifest.version;
 
   src = fetchurl {
-    url = "https://edgedl.me.gvt1.com/edgedl/release2/chrome_component/aclxnidwwkj5di3vduduj2gqpgpq_4.10.2891.0/oimompecagnajdejgnnjijobebaeigek_4.10.2891.0_linux_b4hin3q5s66ws2322cyyfp35lu.crx3";
-    hash = "sha512-8S/4FRQQmQAO9wJ7QGJg8KUVxUQgm5/oEl6l9N2/WGAdMCIqxBoBPrCkPadrpwQUpK0WYX2fIZ8Zzfx3lNm8lA==";
+    url = manifest.url;
+    hash = manifest.sri;
   };
 
   nativeBuildInputs = [ go-crx3 ];

pkgs/by-name/wi/widevine-cdm/x86_64-manifest.json

···
+{
+  "platform_key": "Linux_x86_64-gcc3",
+  "url": "https://edgedl.me.gvt1.com/edgedl/release2/chrome_component/aclxnidwwkj5di3vduduj2gqpgpq_4.10.2891.0/oimompecagnajdejgnnjijobebaeigek_4.10.2891.0_linux_b4hin3q5s66ws2322cyyfp35lu.crx3",
+  "sri": "sha512-8S/4FRQQmQAO9wJ7QGJg8KUVxUQgm5/oEl6l9N2/WGAdMCIqxBoBPrCkPadrpwQUpK0WYX2fIZ8Zzfx3lNm8lA==",
+  "version": "4.10.2891.0"
+}