From 88df5e430bf5f29dd52202c9ee84079e92c3a04e Mon Sep 17 00:00:00 2001
From: elijah-thomas774 <elijahthomas774@gmail.com>
Date: Sat, 4 May 2024 23:11:25 -0400
Subject: [PATCH] Update ut_CharStrmReader.cpp

---
 src/nw4r/ut/ut_CharStrmReader.cpp | 61 +++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/src/nw4r/ut/ut_CharStrmReader.cpp b/src/nw4r/ut/ut_CharStrmReader.cpp
index e69de29b..647875de 100644
--- a/src/nw4r/ut/ut_CharStrmReader.cpp
+++ b/src/nw4r/ut/ut_CharStrmReader.cpp
@@ -0,0 +1,61 @@
+#include <nw4r/ut/ut_CharStrmReader.h>
+
+namespace nw4r {
+namespace ut {
+namespace {
+
+bool IsSJISLeadByte(u8 c) {
+    // Idk how to force the comparison correctly
+    return ((c >= 0x81) && (c < 0xA0)) || c >= 0xe0;
+}
+
+} // namespace
+
+u16 CharStrmReader::ReadNextCharUTF8() {
+    u16 code;
+
+    if (!(GetChar<u8>(0) & 0x80)) {
+        code = GetChar<u8>(0);
+        StepStrm<u8>(1);
+    } else if ((GetChar<u8>(0) & 0xe0) == 0xC0) {
+        code = ((GetChar<u8>(0) & 0x1F) << 6) | GetChar<u8>(1) & 0x3F;
+        StepStrm<u8>(2);
+    } else {
+        code = ((GetChar<u8>(0) & 0x1F) << 12) | ((GetChar<u8>(1) & 0x3F) << 6) | (GetChar<u8>(2) & 0x3F);
+        StepStrm<u8>(3);
+    }
+    return code;
+}
+
+u16 CharStrmReader::ReadNextCharUTF16() {
+    u16 code = GetChar<u16>(0);
+    StepStrm<u16>(1);
+    return code;
+}
+u16 CharStrmReader::ReadNextCharCP1252() {
+    u16 code = GetChar<u8>(0);
+    StepStrm<u8>(1);
+    return code;
+}
+u16 CharStrmReader::ReadNextCharSJIS() {
+    u16 code = GetChar<u8>(0);
+
+    bool isLead = false;
+
+    if ((((u8)GetChar<u8>(0) >= 0x81) && ((u8)GetChar<u8>(0) <= 0xA0)) || (u8)GetChar<u8>(0) >= 0xe0) {
+        isLead = true;
+    }
+
+    if (isLead) {
+        code = GetChar<u8>(1) | (GetChar<u8>(0) << 8);
+        StepStrm<u8>(2);
+    } else {
+        code = GetChar<u8>(0);
+        StepStrm<u8>(1);
+    }
+    return code;
+}
+
+} // namespace ut
+
+} // namespace nw4r