From 974541fd6e11dd6733f1be208f02f0445f18c7c6 Mon Sep 17 00:00:00 2001
From: Gregory Lirent <opensource@lirent.ru>
Date: Fri, 3 Jun 2022 17:41:56 +0300
Subject: [PATCH] Clean charsize checks

---
 charsize.c | 56 ++++++------------------------------------------------
 1 file changed, 6 insertions(+), 50 deletions(-)

diff --git a/charsize.c b/charsize.c
index a175bb3..b3cdf7d 100644
--- a/charsize.c
+++ b/charsize.c
@@ -6,63 +6,19 @@
 int charsize(const char* s) {
 
     unsigned int v;
-  #ifndef UNICODE_CHARSIZE_CHECK_DISABLE
-    unsigned int c;
-  #endif
     if (*(unsigned char*)s <= 0x7f)
         return 1;
 
     memcpy(&v, s, 4);
 
     if (IS_LITTLE_ENDIAN) {
-        if ((v&0x0000c0e0) == 0x000080c0) {
-  #ifndef UNICODE_CHARSIZE_CHECK_DISABLE
-            if (v&0x001f) // > 0x7f
-  #endif
-                return 2;
-        } else {
-
-  #ifndef UNICODE_CHARSIZE_CHECK_DISABLE
-            c  = (v&0x000f) << 6;
-            c |= (v&0x3f00) >> 8;
-
-            if (c >= 0x20) {
-  #endif
-                if ((v&0xc0c0c0f8) == 0x808080f0)
-                    return 4;
-                if ((v&0x00c0c0f0) == 0x008080e0)
-  #ifndef UNICODE_CHARSIZE_CHECK_DISABLE
-                if (c >= (0xd8<<2) && c <= (0xdf<<2)) // != (0xd800 <-> 0xdfff)
-  #endif
-                    return 3;
-            }
-  #ifndef UNICODE_CHARSIZE_CHECK_DISABLE
-        }
-  #endif
+        if ((v&0x0000c0e0) == 0x000080c0) return 2;
+        if ((v&0xc0c0c0f8) == 0x808080f0) return 4;
+        if ((v&0x00c0c0f0) == 0x008080e0) return 3;
     } else {
-        if ((v&0xe0c00000) == 0xc0800000) {
-  #ifndef UNICODE_CHARSIZE_CHECK_DISABLE
-            if (v&0x1f000000) // > 0x7f
-  #endif
-                return 2;
-        } else {
-  #ifndef UNICODE_CHARSIZE_CHECK_DISABLE
-            c  = (v&0x0f<<24) >> 2;
-            c |= (v&(0x3f<<16));
-
-            if (c >= (0x20<<16)) {
-  #endif
-                if ((v&0xf8c0c0c0) == 0xf0808080)
-                    return 4;
-                if ((v&0xf0c0c000) == 0xe0808000)
-  #ifndef UNICODE_CHARSIZE_CHECK_DISABLE
-                if (c >= (0xd8<<22) && c <= (0xdf<<22)) // != (0xd800 <-> 0xdfff)
-  #endif
-                    return 3;
-  #ifndef UNICODE_CHARSIZE_CHECK_DISABLE
-            }
-  #endif
-        }
+        if ((v&0xe0c00000) == 0xc0800000) return 2;
+        if ((v&0xf8c0c0c0) == 0xf0808080) return 4;
+        if ((v&0xf0c0c000) == 0xe0808000) return 3;
     }
     return 0;
 }