Working on switching to std::string.

src/poly/string.h

@@ -12,13 +12,21 @@
 
 #include <string>
 
-#include <poly/config.h>
+#include <poly/platform.h>
+
+#if XE_LIKE_WIN32
+#define strcasecmp _stricmp
+#define strncasecmp _strnicmp
+#endif  // XE_LIKE_WIN32
 
 namespace poly {
 
 std::string to_string(const std::wstring& source);
 std::wstring to_wstring(const std::string& source);
 
+std::string::size_type find_first_of_case(const std::string& target,
+                                          const std::string& search);
+
 }  // namespace poly
 
 #endif  // POLY_STRING_H_