From ccf94e2e6e2c3eb889e7ef26c0a38062330425d6 Mon Sep 17 00:00:00 2001
From: ocornut <omarcornut@gmail.com>
Date: Thu, 12 Jan 2023 12:46:06 +0100
Subject: [PATCH] Strip seemingly unecessary tests, as UTF-8 decoder can not
 return null since 9cca1b2e9

---
 imgui.cpp         |  7 +------
 imgui_draw.cpp    | 15 +--------------
 imgui_widgets.cpp |  4 +---
 3 files changed, 3 insertions(+), 23 deletions(-)

diff --git a/imgui.cpp b/imgui.cpp
index 186f7ac1..29bf8aee 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1288,8 +1288,7 @@ void ImGuiIO::AddInputCharactersUTF8(const char* utf8_chars)
     {
         unsigned int c = 0;
         utf8_chars += ImTextCharFromUtf8(&c, utf8_chars, NULL);
-        if (c != 0)
-            AddInputCharacter(c);
+        AddInputCharacter(c);
     }
 }
 
@@ -2032,8 +2031,6 @@ int ImTextStrFromUtf8(ImWchar* buf, int buf_size, const char* in_text, const cha
     {
         unsigned int c;
         in_text += ImTextCharFromUtf8(&c, in_text, in_text_end);
-        if (c == 0)
-            break;
         *buf_out++ = (ImWchar)c;
     }
     *buf_out = 0;
@@ -2049,8 +2046,6 @@ int ImTextCountCharsFromUtf8(const char* in_text, const char* in_text_end)
     {
         unsigned int c;
         in_text += ImTextCharFromUtf8(&c, in_text, in_text_end);
-        if (c == 0)
-            break;
         char_count++;
     }
     return char_count;
diff --git a/imgui_draw.cpp b/imgui_draw.cpp
index 43857a68..25493df3 100644
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@@ -3382,6 +3382,7 @@ const char* ImFont::CalcWordWrapPositionA(float scale, const char* text, const c
     bool inside_word = true;
 
     const char* s = text;
+    IM_ASSERT(text_end != NULL);
     while (s < text_end)
     {
         unsigned int c = (unsigned int)*s;
@@ -3390,8 +3391,6 @@ const char* ImFont::CalcWordWrapPositionA(float scale, const char* text, const c
             next_s = s + 1;
         else
             next_s = s + ImTextCharFromUtf8(&c, s, text_end);
-        if (c == 0)
-            break;
 
         if (c < 32)
         {
@@ -3497,15 +3496,9 @@ ImVec2 ImFont::CalcTextSizeA(float size, float max_width, float wrap_width, cons
         const char* prev_s = s;
         unsigned int c = (unsigned int)*s;
         if (c < 0x80)
-        {
             s += 1;
-        }
         else
-        {
             s += ImTextCharFromUtf8(&c, s, text_end);
-            if (c == 0) // Malformed UTF-8?
-                break;
-        }
 
         if (c < 32)
         {
@@ -3647,15 +3640,9 @@ void ImFont::RenderText(ImDrawList* draw_list, float size, const ImVec2& pos, Im
         // Decode and advance source
         unsigned int c = (unsigned int)*s;
         if (c < 0x80)
-        {
             s += 1;
-        }
         else
-        {
             s += ImTextCharFromUtf8(&c, s, text_end);
-            if (c == 0) // Malformed UTF-8?
-                break;
-        }
 
         if (c < 32)
         {
diff --git a/imgui_widgets.cpp b/imgui_widgets.cpp
index e61766bd..0613ef8e 100644
--- a/imgui_widgets.cpp
+++ b/imgui_widgets.cpp
@@ -4407,12 +4407,10 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
                 const int clipboard_len = (int)strlen(clipboard);
                 ImWchar* clipboard_filtered = (ImWchar*)IM_ALLOC((clipboard_len + 1) * sizeof(ImWchar));
                 int clipboard_filtered_len = 0;
-                for (const char* s = clipboard; *s; )
+                for (const char* s = clipboard; *s != 0; )
                 {
                     unsigned int c;
                     s += ImTextCharFromUtf8(&c, s, NULL);
-                    if (c == 0)
-                        break;
                     if (!InputTextFilterCharacter(&c, flags, callback, callback_user_data, ImGuiInputSource_Clipboard))
                         continue;
                     clipboard_filtered[clipboard_filtered_len++] = (ImWchar)c;