From 111551cfe32e9353723ee0968c89ece794b6d037 Mon Sep 17 00:00:00 2001
From: ktlwap <149824361+ktlwap@users.noreply.github.com>
Date: Fri, 19 Apr 2024 19:36:53 +0200
Subject: [PATCH] Remove unnecessary string allocations

---
 src/FontStash.NET/Fontstash.Api.cs | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/src/FontStash.NET/Fontstash.Api.cs b/src/FontStash.NET/Fontstash.Api.cs
index a01af94..6914c64 100644
--- a/src/FontStash.NET/Fontstash.Api.cs
+++ b/src/FontStash.NET/Fontstash.Api.cs
@@ -395,11 +395,10 @@ public float DrawText(float x, float y, string str, string end)
 
             for (int i = 0; i < str.Length; i++)
             {
-                char c = str[i];
-                if (str[i..] == end)
+                if (end != null && string.Compare(str, i, end, 0, end.Length) == 0)
                     break;
-
-                if (Utf8.DecUtf8(ref utf8state, ref codepoint, c) != 0)
+                
+                if (Utf8.DecUtf8(ref utf8state, ref codepoint, str[i]) != 0)
                     continue;
                 glyph = GetGlyph(font, codepoint, isize, iblur, FonsGlyphBitmap.Requiered);
                 if (glyph != null)
@@ -458,7 +457,7 @@ public float TextBounds(float x, float y, string str, string end, out float[] bo
             for (int i = 0; i < str.Length; i++)
             {
                 char c = str[i];
-                if (str[i..] == end)
+                if (end != null && string.Compare(str, i, end, 0, end.Length) == 0)
                     break;
 
                 if (Utf8.DecUtf8(ref utf8state, ref codepoint, c) != 0)
@@ -619,11 +618,10 @@ public bool TextIterNext(ref FonsTextIter iter, ref FonsQuad quad)
             int i;
             for (i = 0; i < str.Length; i++)
             {
-                char c = str[i];
-                if (str[i..] == iter.end)
+                if (iter.end != null && string.Compare(str, i, iter.end, 0, iter.end.Length) == 0)
                     break;
 
-                if (Utf8.DecUtf8(ref iter.utf8state, ref iter.codepoint, c) != 0)
+                if (Utf8.DecUtf8(ref iter.utf8state, ref iter.codepoint, str[i]) != 0)
                     continue;
 
                 iter.x = iter.nextx;