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diff --git a/trex.h b/trex.h
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+#ifndef _TREX_H_
+#define _TREX_H_
+/***************************************************************
+	T-Rex a tiny regular expression library
+
+	Copyright (C) 2003-2006 Alberto Demichelis
+
+	This software is provided 'as-is', without any express 
+	or implied warranty. In no event will the authors be held 
+	liable for any damages arising from the use of this software.
+
+	Permission is granted to anyone to use this software for 
+	any purpose, including commercial applications, and to alter
+	it and redistribute it freely, subject to the following restrictions:
+
+		1. The origin of this software must not be misrepresented;
+		you must not claim that you wrote the original software.
+		If you use this software in a product, an acknowledgment
+		in the product documentation would be appreciated but
+		is not required.
+
+		2. Altered source versions must be plainly marked as such,
+		and must not be misrepresented as being the original software.
+
+		3. This notice may not be removed or altered from any
+		source distribution.
+
+****************************************************************/
+
+#ifdef _UNICODE
+#define TRexChar unsigned short
+#define MAX_CHAR 0xFFFF
+#define _TREXC(c) L##c 
+#define trex_strlen wcslen
+#define trex_printf wprintf
+#else
+#define TRexChar char
+#define MAX_CHAR 0xFF
+#define _TREXC(c) (c) 
+#define trex_strlen strlen
+#define trex_printf printf
+#endif
+
+#ifndef TREX_API
+#define TREX_API extern
+#endif
+
+#define TRex_True 1
+#define TRex_False 0
+
+typedef unsigned int TRexBool;
+typedef struct TRex TRex;
+
+typedef struct {
+	const TRexChar *begin;
+	int len;
+} TRexMatch;
+
+TREX_API TRex *trex_compile(const TRexChar *pattern,const TRexChar **error);
+TREX_API void trex_free(TRex *exp);
+TREX_API TRexBool trex_match(TRex* exp,const TRexChar* text);
+TREX_API TRexBool trex_search(TRex* exp,const TRexChar* text, const TRexChar** out_begin, const TRexChar** out_end);
+TREX_API TRexBool trex_searchrange(TRex* exp,const TRexChar* text_begin,const TRexChar* text_end,const TRexChar** out_begin, const TRexChar** out_end);
+TREX_API int trex_getsubexpcount(TRex* exp);
+TREX_API TRexBool trex_getsubexp(TRex* exp, int n, TRexMatch *subexp);
+
+#endif