From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Julian=20Offenh=C3=A4user?= <offenhaeuser@protonmail.com>
Date: Sat, 11 Feb 2023 00:52:51 +0100
Subject: [PATCH] Get rid of swscanf() usage

This function is currently not implemented in our LibC.
---
 gemrb/core/GUI/TextSystem/GemMarkup.cpp | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/gemrb/core/GUI/TextSystem/GemMarkup.cpp b/gemrb/core/GUI/TextSystem/GemMarkup.cpp
index f0f604ccb0c3d37098976f0e05371fb4a1988a67..2741aa6cd6b27961ac9bcd11992cb6cef4fa2a9f 100644
--- a/gemrb/core/GUI/TextSystem/GemMarkup.cpp
+++ b/gemrb/core/GUI/TextSystem/GemMarkup.cpp
@@ -25,7 +25,19 @@ namespace GemRB {
 static Color ParseColor(const String& colorString)
 {
 	Color color = ColorWhite;
-	swscanf(colorString.c_str(), L"%02hhx%02hhx%02hhx%02hhx", &color.r, &color.g, &color.b, &color.a);
+
+	auto h2i = [](wchar_t c) -> int {
+		if (c >= '0' && c <= '9') return c - '0';
+		else if (c >= 'a' && c <='f') return c - 'a' + 10;
+		else if (c >= 'A' && c <='F') return c - 'A' + 10;
+		return 0;
+	};
+
+	color.r = (h2i(colorString[0]) << 4) | h2i(colorString[1]);
+	color.g = (h2i(colorString[2]) << 4) | h2i(colorString[3]);
+	color.b = (h2i(colorString[4]) << 4) | h2i(colorString[5]);
+	color.a = (h2i(colorString[6]) << 4) | h2i(colorString[7]);
+
 	return color;
 }