From 050af3ff7182956b33825d42c39536c5b5c834c8 Mon Sep 17 00:00:00 2001
From: Kelsey Gilbert <kelsey.gilbert@mozilla.com>
Date: Wed, 6 Mar 2024 21:43:11 -0800
Subject: [PATCH] build.py in specs/latest/2.0 as an alternative to Makefile.
 (#3627)

---
 specs/latest/2.0/build.py   | 41 +++++++++++++++++++++++++++++++++++++
 specs/latest/2.0/webgl2.idl |  2 +-
 2 files changed, 42 insertions(+), 1 deletion(-)
 create mode 100644 specs/latest/2.0/build.py

diff --git a/specs/latest/2.0/build.py b/specs/latest/2.0/build.py
new file mode 100644
index 000000000..5b1622688
--- /dev/null
+++ b/specs/latest/2.0/build.py
@@ -0,0 +1,41 @@
+#! /usr/bin/env python3
+import os
+import pathlib
+import subprocess
+import sys
+
+DIR = pathlib.Path(__file__).parent
+
+# -
+# Extract the idl from index.html.
+
+RESOURCES = DIR.parent.parent.parent / 'resources'
+assert RESOURCES.exists(), RESOURCES
+PYTHONPATH_LIBS = [
+   RESOURCES / 'html5lib-1.1/src/html5lib',
+   RESOURCES / 'webencodings-0.5.1/src/webencodings',
+]
+for lib in PYTHONPATH_LIBS:
+   assert lib.exists(), lib
+PYTHONPATH = os.pathsep.join([str(lib.parent) for lib in PYTHONPATH_LIBS])
+
+ENV = os.environ
+ENV['PYTHONPATH'] = PYTHONPATH
+
+args = [sys.executable, 'extract-idl.py', 'index.html']
+print(f'Running {args}...')
+p = subprocess.run([sys.executable, 'extract-idl.py', 'index.html'], cwd=DIR, env=ENV, stdout=subprocess.PIPE, text=True)
+p.check_returncode()
+idl = p.stdout
+assert '\r' not in idl
+
+idl_file_data = '''\
+// AUTOGENERATED FILE -- DO NOT EDIT -- SEE Makefile
+//
+// WebGL IDL definitions scraped from the Khronos specification:
+// https://www.khronos.org/registry/webgl/specs/latest/
+''' + idl
+
+out_file = DIR / 'webgl2.idl'
+print(f'Writing "{out_file}"...')
+out_file.write_bytes(idl_file_data.encode())
diff --git a/specs/latest/2.0/webgl2.idl b/specs/latest/2.0/webgl2.idl
index 70a514837..c810cbf62 100644
--- a/specs/latest/2.0/webgl2.idl
+++ b/specs/latest/2.0/webgl2.idl
@@ -3,7 +3,7 @@
 // WebGL IDL definitions scraped from the Khronos specification:
 // https://www.khronos.org/registry/webgl/specs/latest/
 
-// Copyright (c) 2023 The Khronos Group Inc.
+// Copyright (c) 2024 The Khronos Group Inc.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
 // copy of this software and/or associated documentation files (the