From db1910d81e450d933883a2a55184a9f053997153 Mon Sep 17 00:00:00 2001
From: Joshua Peisach <itzswirlz2020@outlook.com>
Date: Fri, 8 Sep 2023 17:07:44 -0400
Subject: [PATCH] tools/makectx: Use subprocess to direct output file

This way it will appear in 'ctx.h' and not (blah).

Also update the .gitignore for *.obj files, which interestingly
the preprocessor spat out after testing locally.
---
 .gitignore       |  4 ++++
 tools/makectx.py | 26 ++++++++++++++++++++------
 2 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/.gitignore b/.gitignore
index 635e1743..83eb8502 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,8 @@ ISLE.EXE
 LEGO1.DLL
 build/
 *.swp
+
+# Stuff generated by the preprocessor and/or tools/makectx.py
 *.i
+*.obj
+ctx.h
\ No newline at end of file
diff --git a/tools/makectx.py b/tools/makectx.py
index 66a5bf78..29dec232 100644
--- a/tools/makectx.py
+++ b/tools/makectx.py
@@ -1,15 +1,29 @@
 #!/usr/bin/python3
 import argparse
 import os
+import subprocess
 
-parser = argparse.ArgumentParser(allow_abbrev=False,
-  description='Verify Exports: Compare the exports of two DLLs.')
-parser.add_argument('cppfile', metavar='cppfile', help='Path to the C++ File to preprocess.')
+parser = argparse.ArgumentParser(
+    allow_abbrev=False, description="Verify Exports: Compare the exports of two DLLs."
+)
+parser.add_argument(
+    "cppfile", metavar="cppfile", help="Path to the C++ File to preprocess."
+)
+parser.add_argument(
+    "--debug",
+    action="store_true",
+    help="Print debug information by showing the output from the preprocessor. THIS WILL TAKE A LONG TIME AS YOUR TERMINAL TRIES TO LOAD OVER 100K LINES OF TEXT. Use this if your context contains an error or is empty.",
+)
 
 args = parser.parse_args()
 if not os.path.isfile(args.cppfile):
-  parser.error('Specified C++ file does not exist.')
+    parser.error("Specified C++ file does not exist.")
 
-os.system('cl.exe /EP /P ' + args.cppfile)
+output = subprocess.run(
+    "cl.exe /EP " + args.cppfile, capture_output=not args.debug, text=True
+)
 
-print('Preprocessed file. It will be in the directory you executed in this command as "(filename).i".')
\ No newline at end of file
+f = open("ctx.h", "w")
+f.write(output.stdout)
+
+print("Preprocessed file to ctx.h")