Initial import of regex stuff

plugins/include/regex.inc

@@ -0,0 +1,38 @@
+/* Regular Expression API
+ * (C)2004 by David "BAILOPAN" Anderson
+ * Licensed under the GNU General Public License.
+ * No warranties of any kind.
+ */
+
+#if defined _regex_included
+  #endinput
+#endif
+#define _regex_included
+
+enum Regex
+{
+	REGEX_MATCH_FAIL = -2,
+	REGEX_PATTERN_FAIL,
+	REGEX_NO_MATCH,
+	REGEX_OK
+};
+
+/* Return values:
+   -2 = Matching error (error code stored in ret)
+   -1 = Error in pattern (error message and offset # in error[] and ret)
+    0 = No match
+   >1 = Id for getting more info (you must call regex_free() later on)
+        (also note that ret will contain the number of substrings found) 
+ */
+ 
+native Regex:regex_match(const string[], const pattern[], &ret, error[], maxLen);
+
+/* Returns a matched substring from a regex handle
+ * substring ids start at 0 and end at ret-1, where ret is from the above function
+ */
+native regex_substr(Regex:id, str_id, buffer[], maxLen);
+
+/* Frees the memory associated with a regex resuls and sets the handle to 0.
+ * You must do this if the handle >=1, once you're done.
+ */
+native regex_free(&Regex:id);