Move endsWith() to UtilityClass.cpp and put it in header file

This ensures that endsWith() can be used outside of editor.cpp.

When leo60228 originally wrote endsWith(), it was static, but I asked
him on Discord just now and he more-or-less confirmed that it's fine if
it's not static. If it was static, it would be confined to
UtilityClass.cpp now instead!

desktop_version/src/UtilityClass.cpp

@@ -230,3 +230,16 @@ bool is_positive_num(const std::string& str, bool hex)
 	}
 	return true;
 }
+
+bool endsWith(const std::string& str, const std::string& suffix)
+{
+	if (str.size() < suffix.size())
+	{
+		return false;
+	}
+	return str.compare(
+		str.size() - suffix.size(),
+		suffix.size(),
+		suffix
+	) == 0;
+}

desktop_version/src/UtilityClass.h

@@ -13,6 +13,8 @@ std::vector<std::string> split(const std::string &s, char delim);
 
 bool is_positive_num(const std::string& str, bool hex);
 
+bool endsWith(const std::string& str, const std::string& suffix);
+
 #define INBOUNDS(index, vector) ((int) index >= 0 && (int) index < (int) vector.size())
 
 

desktop_version/src/editor.cpp

@@ -88,19 +88,6 @@ bool compare_nocase (std::string first, std::string second)
         return false;
 }
 
-static bool endsWith(const std::string& str, const std::string& suffix)
-{
-    if (str.size() < suffix.size())
-    {
-        return false;
-    }
-    return str.compare(
-        str.size() - suffix.size(),
-        suffix.size(),
-        suffix
-    ) == 0;
-}
-
 void editorclass::loadZips()
 {
     directoryList = FILESYSTEM_getLevelDirFileNames();