Big update.

src/Helpers.cpp

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it and/or modify it under version 2 of the License, or (at your option), any later version.
+ */
+
+#include "Helpers.h"
+
+char* strstri(char const* haystack, char const* needle)
+{
+    if (!*needle)
+    {
+        return (char*)haystack;
+    }
+
+    for (; *haystack; ++haystack)
+    {
+        if (tolower(*haystack) == tolower(*needle))
+        {
+            char const* h = haystack, * n = needle;
+            for (; *h && *n; ++h, ++n)
+            {
+                if (tolower(*h) != tolower(*n))
+                {
+                    break;
+                }
+            }
+
+            if (!*n)
+            {
+                return (char*)haystack;
+            }
+        }
+    }
+
+    return 0;
+}
+
+std::string& ltrim(std::string& s)
+{
+    s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](int c) {return !std::isspace(c); }));
+    return s;
+}
+
+std::string& rtrim(std::string& s)
+{
+    s.erase(std::find_if(s.rbegin(), s.rend(), [](int c) {return !std::isspace(c); }).base(), s.end());
+    return s;
+}
+
+std::string& trim(std::string& s)
+{
+    return ltrim(rtrim(s));
+}