Add ci_char_traits

Builds/VisualStudio2013/beast.vcxproj

@@ -241,6 +241,7 @@
     <ClInclude Include="..\..\beast\unit_test\suite.h" />
     <ClInclude Include="..\..\beast\unit_test\suite_info.h" />
     <ClInclude Include="..\..\beast\unit_test\suite_list.h" />
+    <ClInclude Include="..\..\beast\utility\ci_char_traits.h" />
     <ClInclude Include="..\..\beast\utility\Debug.h" />
     <ClInclude Include="..\..\beast\utility\empty_base_optimization.h" />
     <ClInclude Include="..\..\beast\utility\Error.h" />

Builds/VisualStudio2013/beast.vcxproj.filters

@@ -1207,6 +1207,9 @@
     <ClInclude Include="..\..\beast\utility\zero.h">
       <Filter>beast\utility</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\beast\utility\ci_char_traits.h">
+      <Filter>beast\utility</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\modules\beast_core\files\DirectoryIterator.cpp">

beast/utility/ci_char_traits.h

@@ -0,0 +1,86 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of Beast: https://github.com/vinniefalco/Beast
+    Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#ifndef BEAST_UTILITY_CI_CHAR_TRAITS_H_INCLUDED
+#define BEAST_UTILITY_CI_CHAR_TRAITS_H_INCLUDED
+
+#include <locale>
+#include <string>
+
+namespace beast {
+
+struct ci_char_traits : std::char_traits <char>
+{
+    static
+    bool
+    eq (char c1, char c2)
+    {
+        return ::toupper(c1) ==
+               ::toupper(c2);
+    }
+
+    static
+    bool
+    ne (char c1, char c2)
+    {
+        return ::toupper(c1) !=
+               ::toupper(c2);
+    }
+
+    static
+    bool
+    lt (char c1, char c2)
+    {
+        return ::toupper(c1) <
+               ::toupper(c2);
+    }
+
+    static
+    int
+    compare (char const* s1, char const* s2, std::size_t n)
+    {
+        while (n-- > 0)
+        {
+            auto const comp (
+                int(::toupper(*s1++)) -
+                int(::toupper(*s2++)));
+            if (comp != 0)
+                return comp;
+        }
+        return 0;
+    }
+
+    static
+    char const*
+    find (char const* s, int n, char a)
+    {
+        auto const ua (::toupper(a));
+        for (;n--;)
+        {
+            if (::toupper(*s) == ua)
+                return s;
+            s++;
+        }
+        return nullptr;
+    }
+};
+
+}
+
+#endif