+
+/// StringsEqualNoCase - Return true if the two null-terminated C strings are
+/// equal, ignoring
+
+static inline bool StringsEqualNoCase(const char *LHS, const char *RHS,
+ unsigned len) {
+
+ for (unsigned i = 0; i < len; ++i) {
+ if (tolower(LHS[i]) != tolower(RHS[i]))
+ return false;
+
+ // If RHS[i] == 0 then LHS[i] == 0 or otherwise we would have returned
+ // at the previous branch as tolower('\0') == '\0'.
+ if (RHS[i] == 0)
+ return true;
+ }
+
+ return true;
+}
+
+/// CStrInCStrNoCase - Portable version of strcasestr. Locates the first
+/// occurance of c-string 's2' in string 's1', ignoring case. Returns
+/// NULL if 's2' cannot be found.
+static inline const char* CStrInCStrNoCase(const char *s1, const char *s2) {
+
+ // Are either strings NULL or empty?
+ if (!s1 || !s2 || s1[0] == '\0' || s2[0] == '\0')
+ return 0;
+
+ if (s1 == s2)
+ return s1;
+
+ const char *I1=s1, *I2=s2;
+
+ while (*I1 != '\0' && *I2 != '\0' )
+ if (tolower(*I1) != tolower(*I2)) { // No match. Start over.
+ ++s1; I1 = s1; I2 = s2;
+ }
+ else { // Character match. Advance to the next character.
+ ++I1; ++I2;
+ }
+
+ // If we exhausted all of the characters in 's2', then 's2' appears in 's1'.
+ return *I2 == '\0' ? s1 : 0;
+}