diff --git a/qse/include/qse/awk/Awk.hpp b/qse/include/qse/awk/Awk.hpp
index 67e355bd..80eaa143 100644
--- a/qse/include/qse/awk/Awk.hpp
+++ b/qse/include/qse/awk/Awk.hpp
@@ -1,5 +1,5 @@
 /*
- * $Id: Awk.hpp 229 2009-07-12 13:06:01Z hyunghwan.chung $
+ * $Id: Awk.hpp 230 2009-07-13 08:51:23Z hyunghwan.chung $
  *
    Copyright 2006-2009 Chung, Hyung-Hwan.
 
@@ -239,6 +239,69 @@ public:
 		void operator delete (void* p) throw ();
 		void operator delete[] (void* p) throw ();
 
+		class Index
+		{
+		public:
+			friend class Value;
+
+			Index (): ptr (EMPTY_STRING), len (0) {}
+			Index (const char_t* ptr, size_t len):
+				ptr (ptr), len (len) {}
+
+			const char_t* ptr;
+			size_t        len;
+		};
+
+		class IntIndex: public Index
+		{
+		public:
+			IntIndex (long_t num);
+
+		protected:
+			// 2^32: 4294967296
+			// 2^64: 18446744073709551616
+			// 2^128: 340282366920938463463374607431768211456 
+			// -(2^32/2): -2147483648
+			// -(2^64/2): -9223372036854775808
+			// -(2^128/2): -170141183460469231731687303715884105728
+		#if QSE_SIZEOF_LONG_T > 16
+		#	error SIZEOF(qse_long_t) TOO LARGE. 
+		#	error INCREASE THE BUFFER SIZE TO SUPPORT IT.
+		#elif QSE_SIZEOF_LONG_T == 16
+			char_t buf[41];
+		#elif QSE_SIZEOF_LONG_T == 8
+			char_t buf[21];
+		#else
+			char_t buf[12];
+		#endif
+		};
+
+		class IndexIterator
+		{
+		public:
+			friend class Value;
+
+			static IndexIterator END;
+
+			IndexIterator (): pair (QSE_NULL), buckno (0) {}
+			IndexIterator (pair_t* pair, size_t buckno): 
+				pair (pair), buckno (buckno) {}
+
+			bool operator==  (const IndexIterator& ii) const
+			{
+				return pair == ii.pair && buckno == ii.buckno;
+			}
+
+			bool operator!=  (const IndexIterator& ii) const
+			{
+				return !operator== (ii);
+			}
+
+		protected:
+			pair_t* pair;
+			size_t  buckno;
+		};
+
 		Value ();
 		Value (Run& run);
 		Value (Run* run);
@@ -302,62 +365,75 @@ public:
 		int setStr (Run* r, const char_t* str);
 
 		int setIndexedVal (
-			const char_t* idx, size_t isz, val_t* v);
+			const Index& idx,
+			val_t*       v
+		);
+
 		int setIndexedVal (
-			Run* r, const char_t* idx, size_t isz, val_t* v);
+			Run*         r, 
+			const Index& idx, 
+			val_t*       v
+		);
 
 		int setIndexedInt (
-			const char_t* idx, size_t isz, long_t v);
+			const Index& idx,
+			long_t       v
+		);
+
 		int setIndexedInt (
-			Run* r, const char_t* idx, size_t isz, long_t v);
+			Run* r,
+			const Index& idx,
+			long_t v);
 
 		int setIndexedReal (
-			const char_t* idx,
-			size_t        isz,
+			const Index&  idx,
 			real_t        v
 		);
 
 		int setIndexedReal (
 			Run*          r,
-			const char_t* idx,
-			size_t        isz,
+			const Index&  idx,
 			real_t        v
 		);
 
 		int setIndexedStr (
-			const char_t* idx,
-			size_t        isz,
+			const Index&  idx,
 			const char_t* str,
 			size_t        len
 		);
 
 		int setIndexedStr (
 			Run*          r,
-			const char_t* idx,
-			size_t        isz,
+			const Index&  idx,
 			const char_t* str,
 			size_t        len
 		);
 
 		int setIndexedStr (
-			const char_t* idx,
-			size_t        isz,
+			const Index&  idx,
 			const char_t* str
 		);
 
 		int setIndexedStr (
 			Run*          r,
-			const char_t* idx,
-			size_t        isz,
+			const Index&  idx,
 			const char_t* str
 		);
 
 		bool isIndexed () const;
 
 		int getIndexed (
-			const char_t* idx,
-			size_t        isz,
-			Value&        val
+			const Index&  idx,
+			Value*        val
+		) const;
+
+		IndexIterator getFirstIndex (
+			Index* idx
+		) const;
+
+		IndexIterator getNextIndex (
+			Index* idx,
+			const IndexIterator& iter
 		) const;
 
 	protected:
diff --git a/qse/include/qse/awk/StdAwk.hpp b/qse/include/qse/awk/StdAwk.hpp
index c6fa99ed..b8225b96 100644
--- a/qse/include/qse/awk/StdAwk.hpp
+++ b/qse/include/qse/awk/StdAwk.hpp
@@ -1,5 +1,5 @@
 /*
- * $Id: StdAwk.hpp 229 2009-07-12 13:06:01Z hyunghwan.chung $
+ * $Id: StdAwk.hpp 230 2009-07-13 08:51:23Z hyunghwan.chung $
  *
    Copyright 2006-2009 Chung, Hyung-Hwan.
 
@@ -23,9 +23,11 @@
 
 /**
  * @example awk05.cpp
- * This program demonstrates how to embed QSE::StdAwk in C++.
+ * This program demonstrates how to embed QSE::StdAwk::loop().
  * @example awk06.cpp
- * This program demonstrates how to embed QSE::StdAwk in C++.
+ * This program demonstrates how to use QSE::StdAwk::call().
+ * @example awk07.cpp
+ * This program demonstrates how to handle an indexed value.
  */
 
 /////////////////////////////////
diff --git a/qse/include/qse/awk/awk.h b/qse/include/qse/awk/awk.h
index 3174d6d0..968b1083 100644
--- a/qse/include/qse/awk/awk.h
+++ b/qse/include/qse/awk/awk.h
@@ -1,5 +1,5 @@
 /*
- * $Id: awk.h 228 2009-07-11 03:01:36Z hyunghwan.chung $
+ * $Id: awk.h 230 2009-07-13 08:51:23Z hyunghwan.chung $
  *
    Copyright 2006-2009 Chung, Hyung-Hwan.
 
@@ -1809,6 +1809,18 @@ void* qse_awk_rtx_alloc (
 	qse_size_t     size /**< block size in bytes */
 );
 
+/**
+ * The qse_awk_rtx_realloc() function resizes a memory block pointed to
+ * by @a ptr to @a size bytes using the memory manager associated with 
+ * a runtime context @a rtx. 
+ * @return the pointer to a memory block on success, #QSE_NULL on failure.
+ */
+void* qse_awk_rtx_realloc (
+	qse_awk_rtx_t* rtx, /**< runtime context */
+	void*          ptr, /**< memory block */
+	qse_size_t     size /**< block size in bytes */
+);
+
 /**
  * The qse_awk_rtx_free() function frees a memory block pointed to by @a ptr
  * using the memory manager of a runtime ocntext @a rtx.
diff --git a/qse/include/qse/types.h b/qse/include/qse/types.h
index 94cbed6e..882096e6 100644
--- a/qse/include/qse/types.h
+++ b/qse/include/qse/types.h
@@ -1,5 +1,5 @@
 /*
- * $Id: types.h 220 2009-07-01 13:14:39Z hyunghwan.chung $
+ * $Id: types.h 230 2009-07-13 08:51:23Z hyunghwan.chung $
  *
    Copyright 2006-2009 Chung, Hyung-Hwan.
 
@@ -70,24 +70,31 @@ typedef enum qse_tri_t qse_tri_t;
     (QSE_SIZEOF_VOID_P == QSE_SIZEOF_LONG)
 	typedef long qse_int_t;
 	typedef unsigned long qse_uint_t;
+	#define QSE_SIZEOF_INT_T QSE_SIZEOF_LONG
 #elif defined(__SPU__) && (QSE_SIZEOF_VOID_P == QSE_SIZEOF_LONG)
 	typedef long qse_int_t;
 	typedef unsigned long qse_uint_t;
+	#define QSE_SIZEOF_INT_T QSE_SIZEOF_LONG
 #elif QSE_SIZEOF_VOID_P == QSE_SIZEOF_INT
 	typedef int qse_int_t;
 	typedef unsigned int qse_uint_t;
+	#define QSE_SIZEOF_INT_T QSE_SIZEOF_INT
 #elif QSE_SIZEOF_VOID_P == QSE_SIZEOF_LONG
 	typedef long qse_int_t;
 	typedef unsigned long qse_uint_t;
+	#define QSE_SIZEOF_INT_T QSE_SIZEOF_LONG
 #elif QSE_SIZEOF_VOID_P == QSE_SIZEOF_LONG_LONG
 	typedef long long qse_int_t;
 	typedef unsigned long long qse_uint_t;
+	#define QSE_SIZEOF_INT_T QSE_SIZEOF_LONG_LONG
 #elif QSE_SIZEOF_VOID_P == QSE_SIZEOF___INT32
 	typedef __int32 qse_int_t;
 	typedef unsigned __int32 qse_uint_t;
+	#define QSE_SIZEOF_INT_T QSE_SIZEOF___INT32
 #elif QSE_SIZEOF_VOID_P == QSE_SIZEOF___INT64
 	typedef __int64 qse_int_t;
 	typedef unsigned __int64 qse_uint_t;
+	#define QSE_SIZEOF_INT_T QSE_SIZEOF___INT64
 #else
 #	error unsupported pointer size
 #endif
@@ -101,12 +108,15 @@ typedef enum qse_tri_t qse_tri_t;
 #if QSE_SIZEOF_LONG_LONG > 0
 	typedef long long qse_long_t;
 	typedef unsigned long long qse_ulong_t;
+	#define QSE_SIZEOF_LONG_T QSE_SIZEOF_LONG_LONG
 #elif QSE_SIZEOF___INT64 > 0
 	typedef __int64 qse_long_t;
 	typedef unsigned __int64 qse_ulong_t;
+	#define QSE_SIZEOF_LONG_T QSE_SIZEOF___INT64
 #else
 	typedef long qse_long_t;
 	typedef unsigned long qse_ulong_t;
+	#define QSE_SIZEOF_LONG_T QSE_SIZEOF_LONG
 #endif
 
 /** @typedef qse_int8_t
diff --git a/qse/lib/awk/Awk.cpp b/qse/lib/awk/Awk.cpp
index 8610a27e..80adc46d 100644
--- a/qse/lib/awk/Awk.cpp
+++ b/qse/lib/awk/Awk.cpp
@@ -1,5 +1,5 @@
 /*
- * $Id: Awk.cpp 229 2009-07-12 13:06:01Z hyunghwan.chung $
+ * $Id: Awk.cpp 230 2009-07-13 08:51:23Z hyunghwan.chung $
  *
    Copyright 2006-2009 Chung, Hyung-Hwan.
 
@@ -170,6 +170,51 @@ Awk::Console::Mode Awk::Console::getMode () const
 //////////////////////////////////////////////////////////////////
 
 const Awk::char_t* Awk::Value::EMPTY_STRING = QSE_T("");
+Awk::Value::IndexIterator Awk::Value::IndexIterator::END;
+
+Awk::Value::IntIndex::IntIndex (long_t x)
+{
+	ptr = buf;
+	len = 0;
+
+#define NTOC(n) ((n) + QSE_T('0'))
+
+	int base = 10;
+        long_t last = x % base;
+        long_t y = 0;
+        int dig = 0;
+
+	if (x < 0) buf[len++] = QSE_T('-');
+
+	x = x / base;
+	if (x < 0) x = -x;
+
+	while (x > 0)
+	{
+		y = y * base + (x % base);
+		x = x / base;
+		dig++;
+	}
+
+        while (y > 0)
+        {
+		buf[len++] = NTOC (y % base);
+		y = y / base;
+		dig--;
+	}
+
+	while (dig > 0)
+	{
+		dig--;
+		buf[len++] = QSE_T('0');
+	}
+	if (last < 0) last = -last;
+	buf[len++] = NTOC(last);
+
+	buf[len] = QSE_T('\0');
+
+#undef NTOC
+}
 
 void* Awk::Value::operator new (size_t n, Run* run) throw ()
 {
@@ -326,7 +371,11 @@ int Awk::Value::getInt (long_t* v) const
 	{
 		real_t rv;
 		int n = qse_awk_rtx_valtonum (run->rtx, val, &lv, &rv);
-		if (n <= -1) return -1;
+		if (n <= -1) 
+		{
+			run->awk->retrieveError (run->rtx);
+			return -1;
+		}
 		if (n >= 1) lv = rv;
 	}
 
@@ -346,7 +395,11 @@ int Awk::Value::getReal (real_t* v) const
 	{
 		long_t lv;
 		int n = qse_awk_rtx_valtonum (run->rtx, val, &lv, &rv);
-		if (n <= -1) return -1;
+		if (n <= -1)
+		{
+			run->awk->retrieveError (run->rtx);
+			return -1;
+		}
 		if (n == 0) rv = lv;
 	}
 
@@ -379,6 +432,7 @@ int Awk::Value::getStr (const char_t** str, size_t* len) const
 				if (qse_awk_rtx_valtostr (
 					run->rtx, val, &out) == QSE_NULL)
 				{
+					run->awk->retrieveError (run->rtx);
 					return -1;
 				}
 
@@ -440,7 +494,11 @@ int Awk::Value::setInt (Run* r, long_t v)
 {
 	val_t* tmp;
 	tmp = qse_awk_rtx_makeintval (r->rtx, v);
-	if (tmp == QSE_NULL) return -1;
+	if (tmp == QSE_NULL) 
+	{
+		r->awk->retrieveError (r->rtx);
+		return -1;
+	}
 
 	int n = setVal (r, tmp);
 	QSE_ASSERT (n == 0);
@@ -457,7 +515,11 @@ int Awk::Value::setReal (Run* r, real_t v)
 {
 	val_t* tmp;
 	tmp = qse_awk_rtx_makerealval (r->rtx, v);
-	if (tmp == QSE_NULL) return -1;
+	if (tmp == QSE_NULL)
+	{
+		r->awk->retrieveError (r->rtx);
+		return -1;
+	}
 			
 	int n = setVal (r, tmp);
 	QSE_ASSERT (n == 0);
@@ -474,7 +536,11 @@ int Awk::Value::setStr (Run* r, const char_t* str, size_t len)
 {
 	val_t* tmp;
 	tmp = qse_awk_rtx_makestrval (r->rtx, str, len);
-	if (tmp == QSE_NULL) return -1;
+	if (tmp == QSE_NULL)
+	{
+		r->awk->retrieveError (r->rtx);
+		return -1;
+	}
 
 	int n = setVal (r, tmp);
 	QSE_ASSERT (n == 0);
@@ -491,27 +557,37 @@ int Awk::Value::setStr (Run* r, const char_t* str)
 {
 	val_t* tmp;
 	tmp = qse_awk_rtx_makestrval0 (r->rtx, str);
-	if (tmp == QSE_NULL) return -1;
+	if (tmp == QSE_NULL) 
+	{
+		r->awk->retrieveError (r->rtx);
+		return -1;
+	}
 
 	int n = setVal (r, tmp);
 	QSE_ASSERT (n == 0);
 	return n;
 }
 
-int Awk::Value::setIndexedVal (const char_t* idx, size_t isz, val_t* v)
+int Awk::Value::setIndexedVal (const Index& idx, val_t* v)
 {
 	if (run == QSE_NULL) return -1;
-	return setIndexedVal (run, idx, isz, v);
+	return setIndexedVal (run, idx, v);
 }
 
-int Awk::Value::setIndexedVal (Run* r, const char_t* idx, size_t isz, val_t* v)
+int Awk::Value::setIndexedVal (Run* r, const Index& idx, val_t* v)
 {
+	QSE_ASSERT (r != QSE_NULL);
+
 	if (val->type != QSE_AWK_VAL_MAP)
 	{
 		/* the previous value is not a map. 
 		 * a new map value needs to be created first */
-		val_t* map = qse_awk_rtx_makemapval (run->rtx);
-		if (map == QSE_NULL) return -1;
+		val_t* map = qse_awk_rtx_makemapval (r->rtx);
+		if (map == QSE_NULL) 
+		{
+			r->awk->retrieveError (r->rtx);
+			return -1;
+		}
 
 		qse_awk_rtx_refupval (r->rtx, map);
 		qse_awk_rtx_refupval (r->rtx, v);
@@ -519,12 +595,13 @@ int Awk::Value::setIndexedVal (Run* r, const char_t* idx, size_t isz, val_t* v)
 		/* update the map with a given value */
 		pair_t* pair = qse_map_upsert (
 			((qse_awk_val_map_t*)map)->map, 
-			(char_t*)idx, isz, v, 0);
+			(char_t*)idx.ptr, idx.len, v, 0);
 		if (pair == QSE_NULL)
 		{
 			qse_awk_rtx_refdownval (r->rtx, v);
 			qse_awk_rtx_refdownval (r->rtx, map);
-			run->setError (ERR_NOMEM, 0, QSE_NULL, 0);
+			r->setError (ERR_NOMEM, 0, QSE_NULL, 0);
+			r->awk->retrieveError (r->rtx);
 			return -1;
 		}
 
@@ -545,6 +622,7 @@ int Awk::Value::setIndexedVal (Run* r, const char_t* idx, size_t isz, val_t* v)
 		{
 			// it can't span across multiple runtime contexts
 			run->setError (ERR_INVAL);
+			run->awk->retrieveError (run->rtx);
 			return -1;
 		}
 
@@ -552,11 +630,12 @@ int Awk::Value::setIndexedVal (Run* r, const char_t* idx, size_t isz, val_t* v)
 
 		pair_t* pair = qse_map_upsert (
 			((qse_awk_val_map_t*)val)->map, 
-			(char_t*)idx, isz, v, 0);
+			(char_t*)idx.ptr, idx.len, v, 0);
 		if (pair == QSE_NULL)
 		{
 			qse_awk_rtx_refdownval (r->rtx, v);
 			run->setError (ERR_NOMEM);
+			run->awk->retrieveError (run->rtx);
 			return -1;
 		}
 	}
@@ -564,79 +643,94 @@ int Awk::Value::setIndexedVal (Run* r, const char_t* idx, size_t isz, val_t* v)
 	return 0;
 }
 
-int Awk::Value::setIndexedInt (const char_t* idx, size_t isz, long_t v)
+int Awk::Value::setIndexedInt (const Index& idx, long_t v)
 {
 	if (run == QSE_NULL) return -1;
-	return setIndexedInt (run, idx, isz, v);
+	return setIndexedInt (run, idx, v);
 }
 
-int Awk::Value::setIndexedInt (Run* r, const char_t* idx, size_t isz, long_t v)
+int Awk::Value::setIndexedInt (Run* r, const Index& idx, long_t v)
 {
 	val_t* tmp;
 	tmp = qse_awk_rtx_makeintval (r->rtx, v);
-	if (tmp == QSE_NULL) return -1;
+	if (tmp == QSE_NULL) 
+	{
+		r->awk->retrieveError (r->rtx);
+		return -1;
+	}
 
 	qse_awk_rtx_refupval (r->rtx, tmp);
-	int n = setIndexedVal (r, idx, isz, tmp);
+	int n = setIndexedVal (r, idx, tmp);
 	qse_awk_rtx_refdownval (r->rtx, tmp);
 
 	return n;
 }
 
-int Awk::Value::setIndexedReal (const char_t* idx, size_t isz, real_t v)
+int Awk::Value::setIndexedReal (const Index& idx, real_t v)
 {
 	if (run == QSE_NULL) return -1;
-	return setIndexedReal (run, idx, isz, v);
+	return setIndexedReal (run, idx, v);
 }
 
-int Awk::Value::setIndexedReal (Run* r, const char_t* idx, size_t isz, real_t v)
+int Awk::Value::setIndexedReal (Run* r, const Index& idx, real_t v)
 {
 	val_t* tmp;
 	tmp = qse_awk_rtx_makerealval (r->rtx, v);
-	if (tmp == QSE_NULL) return -1;
+	if (tmp == QSE_NULL) 
+	{
+		r->awk->retrieveError (r->rtx);
+		return -1;
+	}
 
 	qse_awk_rtx_refupval (r->rtx, tmp);
-	int n = setIndexedVal (r, idx, isz, tmp);
+	int n = setIndexedVal (r, idx, tmp);
 	qse_awk_rtx_refdownval (r->rtx, tmp);
 
 	return n;
 }
 
-int Awk::Value::setIndexedStr (const char_t* idx, size_t isz, const char_t* str, size_t len)
+int Awk::Value::setIndexedStr (const Index& idx, const char_t* str, size_t len)
 {
 	if (run == QSE_NULL) return -1;
-	return setIndexedStr (run, idx, isz, str, len);
+	return setIndexedStr (run, idx, str, len);
 }
 
 int Awk::Value::setIndexedStr (
-	Run* r, const char_t* idx, size_t isz, const char_t* str, size_t len)
+	Run* r, const Index& idx, const char_t* str, size_t len)
 {
 	val_t* tmp;
 	tmp = qse_awk_rtx_makestrval (r->rtx, str, len);
-	if (tmp == QSE_NULL) return -1;
+	if (tmp == QSE_NULL) 
+	{
+		r->awk->retrieveError (r->rtx);
+		return -1;
+	}
 
 	qse_awk_rtx_refupval (r->rtx, tmp);
-	int n = setIndexedVal (r, idx, isz, tmp);
+	int n = setIndexedVal (r, idx, tmp);
 	qse_awk_rtx_refdownval (r->rtx, tmp);
 
 	return n;
 }
 
-int Awk::Value::setIndexedStr (const char_t* idx, size_t isz, const char_t* str)
+int Awk::Value::setIndexedStr (const Index& idx, const char_t* str)
 {
 	if (run == QSE_NULL) return -1;
-	return setIndexedStr (run, idx, isz, str);
+	return setIndexedStr (run, idx, str);
 }
 
-int Awk::Value::setIndexedStr (
-	Run* r, const char_t* idx, size_t isz, const char_t* str)
+int Awk::Value::setIndexedStr (Run* r, const Index& idx, const char_t* str)
 {
 	val_t* tmp;
 	tmp = qse_awk_rtx_makestrval0 (r->rtx, str);
-	if (tmp == QSE_NULL) return -1;
+	if (tmp == QSE_NULL)
+	{
+		r->awk->retrieveError (r->rtx);
+		return -1;
+	}
 
 	qse_awk_rtx_refupval (r->rtx, tmp);
-	int n = setIndexedVal (r, idx, isz, tmp);
+	int n = setIndexedVal (r, idx, tmp);
 	qse_awk_rtx_refdownval (r->rtx, tmp);
 
 	return n;
@@ -649,30 +743,68 @@ bool Awk::Value::isIndexed () const
 	return val->type == QSE_AWK_VAL_MAP;
 }
 
-int Awk::Value::getIndexed (const char_t* idx, size_t isz, Value& v) const
+int Awk::Value::getIndexed (const Index& idx, Value* v) const
 {
 	QSE_ASSERT (val != QSE_NULL);
 
 	// not a map. v is just nil. not an error 
 	if (val->type != QSE_AWK_VAL_MAP) 
 	{	
-		v.clear ();
+		v->clear ();
 		return 0;
 	}
 
 	// get the value from the map.
 	qse_awk_val_map_t* m = (qse_awk_val_map_t*)val;
-	pair_t* pair = qse_map_search (m->map, idx, isz);
+	pair_t* pair = qse_map_search (m->map, idx.ptr, idx.len);
 
 	// the key is not found. it is not an error. v is just nil 
 	if (pair == QSE_NULL) 
 	{
-		v.clear ();
+		v->clear ();
 		return 0; 
 	}
 
 	// if v.set fails, it should return an error 
-	return v.setVal (run, (val_t*)QSE_MAP_VPTR(pair));
+	return v->setVal (run, (val_t*)QSE_MAP_VPTR(pair));
+}
+
+Awk::Value::IndexIterator Awk::Value::getFirstIndex (Index* idx) const
+{
+	QSE_ASSERT (val != QSE_NULL);
+
+	if (val->type != QSE_AWK_VAL_MAP) return IndexIterator::END;
+
+	size_t buckno;
+	qse_awk_val_map_t* m = (qse_awk_val_map_t*)val;
+	pair_t* pair = qse_map_getfirstpair (m->map, &buckno);
+	if (pair == QSE_NULL) return IndexIterator::END; // no more key
+
+	idx->ptr = (const char_t*)QSE_MAP_KPTR(pair);
+	idx->len = QSE_MAP_KLEN(pair);
+
+	return IndexIterator (pair, buckno);	
+}
+
+Awk::Value::IndexIterator Awk::Value::getNextIndex (
+	Index* idx, const IndexIterator& iter) const
+{
+	QSE_ASSERT (val != QSE_NULL);
+
+	if (val->type != QSE_AWK_VAL_MAP) return IndexIterator::END;
+
+	qse_awk_val_map_t* m = (qse_awk_val_map_t*)val;
+
+	pair_t* pair = (pair_t*)iter.pair;
+	size_t buckno = iter.buckno;
+		
+	pair = qse_map_getnextpair (m->map, pair, &buckno);
+	if (pair == QSE_NULL) return IndexIterator::END;
+
+	idx->ptr = (const char_t*)QSE_MAP_KPTR(pair); 
+	idx->len = QSE_MAP_KLEN(pair);
+
+	return IndexIterator (pair, buckno);	
 }
 
 #if 0
@@ -724,35 +856,6 @@ int Awk::Argument::getNextIndex (Awk::Argument& val) const
 	return 1;
 }
 
-int Awk::Return::setIndexed (long_t idx, real_t v)
-{
-	if (this->run == QSE_NULL) return -1;
-
-	char_t ri[128];
-
-	int rl = Awk::sprintf (
-		(awk_t*)this->run->awk, ri, QSE_COUNTOF(ri), 
-	#if QSE_SIZEOF_LONG_LONG > 0
-		QSE_T("%lld"), (long long)idx
-	#elif QSE_SIZEOF___INT64 > 0
-		QSE_T("%I64d"), (__int64)idx
-	#elif QSE_SIZEOF_LONG > 0
-		QSE_T("%ld"), (long)idx
-	#elif QSE_SIZEOF_INT > 0
-		QSE_T("%d"), (int)idx
-	#else
-		#error unsupported size	
-	#endif
-		);
-
-	if (rl < 0)
-	{
-		this->run->setError (ERR_INTERN, 0, QSE_NULL, 0);
-		return -1;
-	}
-
-	return setIndexed (ri, rl, v);
-}
 #endif
 
 //////////////////////////////////////////////////////////////////
@@ -1270,6 +1373,7 @@ int Awk::call (const char_t* name, Value* ret, const Value* args, size_t nargs)
 			if (ptr == QSE_NULL)
 			{
 				runctx.setError (ERR_NOMEM);
+				retrieveError (runctx.rtx);
 				return -1;
 			}
 		}
diff --git a/qse/lib/awk/misc.c b/qse/lib/awk/misc.c
index 8c7c0dae..65114823 100644
--- a/qse/lib/awk/misc.c
+++ b/qse/lib/awk/misc.c
@@ -1,5 +1,5 @@
 /*
- * $Id: misc.c 220 2009-07-01 13:14:39Z hyunghwan.chung $
+ * $Id: misc.c 230 2009-07-13 08:51:23Z hyunghwan.chung $
  *
    Copyright 2006-2009 Chung, Hyung-Hwan.
 
@@ -983,6 +983,11 @@ void* qse_awk_rtx_alloc (qse_awk_rtx_t* rtx, qse_size_t size)
 	return qse_awk_alloc (rtx->awk, size);
 }
 
+void* qse_awk_rtx_realloc (qse_awk_rtx_t* rtx, void* ptr, qse_size_t size)
+{
+	return qse_awk_realloc (rtx->awk, ptr, size);
+}
+
 void qse_awk_rtx_free (qse_awk_rtx_t* rtx, void* ptr)
 {
 	qse_awk_free (rtx->awk, ptr);
diff --git a/qse/lib/awk/run.c b/qse/lib/awk/run.c
index 54468133..c69500fb 100644
--- a/qse/lib/awk/run.c
+++ b/qse/lib/awk/run.c
@@ -1,5 +1,5 @@
 /*
- * $Id: run.c 228 2009-07-11 03:01:36Z hyunghwan.chung $
+ * $Id: run.c 230 2009-07-13 08:51:23Z hyunghwan.chung $
  *
    Copyright 2006-2009 Chung, Hyung-Hwan.
 
@@ -243,6 +243,9 @@ typedef qse_awk_val_t* (*binop_func_t) (
 	qse_awk_rtx_t* run, qse_awk_val_t* left, qse_awk_val_t* right);
 typedef qse_awk_val_t* (*eval_expr_t) (qse_awk_rtx_t* run, qse_awk_nde_t* nde);
 
+#ifdef NDEBUG
+#define xstr_to_cstr(x) ((qse_cstr_t*)x)
+#else
 static qse_cstr_t* xstr_to_cstr (qse_xstr_t* xstr)
 {
 	/* i use this function to typecast qse_cstr_t* to 
@@ -252,6 +255,7 @@ static qse_cstr_t* xstr_to_cstr (qse_xstr_t* xstr)
 	 * haved changed to something else. */ 
 	return (qse_cstr_t*)xstr;
 }
+#endif
 
 qse_size_t qse_awk_rtx_getnargs (qse_awk_rtx_t* run)
 {
@@ -3328,7 +3332,6 @@ static qse_awk_val_t* do_assignment (
 			goto exit_on_error;
 		}
 	
-
 		ret = do_assignment_pos (run, (qse_awk_nde_pos_t*)var, val);
 	}
 	else
@@ -3463,7 +3466,7 @@ static qse_awk_val_t* do_assignment_map (
 		      (var->type == QSE_AWK_NDE_LCLIDX)? 
 		      	(qse_awk_val_map_t*)STACK_LCL(run,var->id.idxa):
 		      	(qse_awk_val_map_t*)STACK_ARG(run,var->id.idxa);
-	}
+	} 
 
 	if (map->type == QSE_AWK_VAL_NIL)
 	{
diff --git a/qse/samples/awk/Makefile.am b/qse/samples/awk/Makefile.am
index c997e4de..ab783b70 100644
--- a/qse/samples/awk/Makefile.am
+++ b/qse/samples/awk/Makefile.am
@@ -11,13 +11,15 @@ awk03_SOURCES = awk03.c
 awk04_SOURCES = awk04.c
 
 if ENABLE_CXX
-bin_PROGRAMS += awk05 awk06 awk07
+bin_PROGRAMS += awk05 awk06 awk07 awk08
 
 awk05_SOURCES = awk05.cpp
 awk06_SOURCES = awk06.cpp
 awk07_SOURCES = awk07.cpp
+awk08_SOURCES = awk08.cpp
 
 awk05_LDADD = -lqseawk++ $(LDADD)
 awk06_LDADD = -lqseawk++ $(LDADD)
 awk07_LDADD = -lqseawk++ $(LDADD)
+awk08_LDADD = -lqseawk++ $(LDADD)
 endif
diff --git a/qse/samples/awk/Makefile.in b/qse/samples/awk/Makefile.in
index d58c2107..a2bf09c7 100644
--- a/qse/samples/awk/Makefile.in
+++ b/qse/samples/awk/Makefile.in
@@ -34,7 +34,7 @@ build_triplet = @build@
 host_triplet = @host@
 bin_PROGRAMS = awk01$(EXEEXT) awk02$(EXEEXT) awk03$(EXEEXT) \
 	awk04$(EXEEXT) $(am__EXEEXT_1)
-@ENABLE_CXX_TRUE@am__append_1 = awk05 awk06 awk07
+@ENABLE_CXX_TRUE@am__append_1 = awk05 awk06 awk07 awk08
 subdir = samples/awk
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
@@ -49,7 +49,7 @@ mkinstalldirs = $(install_sh) -d
 CONFIG_HEADER = $(top_builddir)/include/qse/config.h
 CONFIG_CLEAN_FILES =
 @ENABLE_CXX_TRUE@am__EXEEXT_1 = awk05$(EXEEXT) awk06$(EXEEXT) \
-@ENABLE_CXX_TRUE@	awk07$(EXEEXT)
+@ENABLE_CXX_TRUE@	awk07$(EXEEXT) awk08$(EXEEXT)
 am__installdirs = "$(DESTDIR)$(bindir)"
 binPROGRAMS_INSTALL = $(INSTALL_PROGRAM)
 PROGRAMS = $(bin_PROGRAMS)
@@ -83,6 +83,10 @@ am__awk07_SOURCES_DIST = awk07.cpp
 @ENABLE_CXX_TRUE@am_awk07_OBJECTS = awk07.$(OBJEXT)
 awk07_OBJECTS = $(am_awk07_OBJECTS)
 @ENABLE_CXX_TRUE@awk07_DEPENDENCIES = $(am__DEPENDENCIES_2)
+am__awk08_SOURCES_DIST = awk08.cpp
+@ENABLE_CXX_TRUE@am_awk08_OBJECTS = awk08.$(OBJEXT)
+awk08_OBJECTS = $(am_awk08_OBJECTS)
+@ENABLE_CXX_TRUE@awk08_DEPENDENCIES = $(am__DEPENDENCIES_2)
 DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)/include/qse
 depcomp = $(SHELL) $(top_srcdir)/ac/au/depcomp
 am__depfiles_maybe = depfiles
@@ -106,10 +110,11 @@ CXXLINK = $(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
 	$(LDFLAGS) -o $@
 SOURCES = $(awk01_SOURCES) $(awk02_SOURCES) $(awk03_SOURCES) \
 	$(awk04_SOURCES) $(awk05_SOURCES) $(awk06_SOURCES) \
-	$(awk07_SOURCES)
+	$(awk07_SOURCES) $(awk08_SOURCES)
 DIST_SOURCES = $(awk01_SOURCES) $(awk02_SOURCES) $(awk03_SOURCES) \
 	$(awk04_SOURCES) $(am__awk05_SOURCES_DIST) \
-	$(am__awk06_SOURCES_DIST) $(am__awk07_SOURCES_DIST)
+	$(am__awk06_SOURCES_DIST) $(am__awk07_SOURCES_DIST) \
+	$(am__awk08_SOURCES_DIST)
 ETAGS = etags
 CTAGS = ctags
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
@@ -258,9 +263,11 @@ awk04_SOURCES = awk04.c
 @ENABLE_CXX_TRUE@awk05_SOURCES = awk05.cpp
 @ENABLE_CXX_TRUE@awk06_SOURCES = awk06.cpp
 @ENABLE_CXX_TRUE@awk07_SOURCES = awk07.cpp
+@ENABLE_CXX_TRUE@awk08_SOURCES = awk08.cpp
 @ENABLE_CXX_TRUE@awk05_LDADD = -lqseawk++ $(LDADD)
 @ENABLE_CXX_TRUE@awk06_LDADD = -lqseawk++ $(LDADD)
 @ENABLE_CXX_TRUE@awk07_LDADD = -lqseawk++ $(LDADD)
+@ENABLE_CXX_TRUE@awk08_LDADD = -lqseawk++ $(LDADD)
 all: all-am
 
 .SUFFIXES:
@@ -343,6 +350,9 @@ awk06$(EXEEXT): $(awk06_OBJECTS) $(awk06_DEPENDENCIES)
 awk07$(EXEEXT): $(awk07_OBJECTS) $(awk07_DEPENDENCIES) 
 	@rm -f awk07$(EXEEXT)
 	$(CXXLINK) $(awk07_OBJECTS) $(awk07_LDADD) $(LIBS)
+awk08$(EXEEXT): $(awk08_OBJECTS) $(awk08_DEPENDENCIES) 
+	@rm -f awk08$(EXEEXT)
+	$(CXXLINK) $(awk08_OBJECTS) $(awk08_LDADD) $(LIBS)
 
 mostlyclean-compile:
 	-rm -f *.$(OBJEXT)
@@ -357,6 +367,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/awk05.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/awk06.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/awk07.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/awk08.Po@am__quote@
 
 .c.o:
 @am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
diff --git a/qse/samples/awk/awk07.cpp b/qse/samples/awk/awk07.cpp
index c6421646..dd18e554 100644
--- a/qse/samples/awk/awk07.cpp
+++ b/qse/samples/awk/awk07.cpp
@@ -17,652 +17,103 @@
  */
 
 #include <qse/awk/StdAwk.hpp>
-#include <qse/cmn/str.h>
 #include <qse/cmn/stdio.h>
 #include <qse/cmn/main.h>
 
-#include <stdlib.h>
-#include <math.h>
-
-#if defined(_WIN32)
-#	include <windows.h>
-#else
-#	include <unistd.h>
-#	include <signal.h>
-#	include <errno.h>
-#endif
-
-class MyAwk;
-#ifdef _WIN32
-static BOOL WINAPI stop_run (DWORD ctrl_type);
-#else
-static void stop_run (int sig);
-#endif
-
-static void set_intr_run (void);
-static void unset_intr_run (void);
-
-MyAwk* app_awk = QSE_NULL;
-static bool verbose = false;
-
-class MyAwk: public QSE::StdAwk
+static void print_error (unsigned long line, const qse_char_t* msg)
 {
-public:
-	MyAwk (): srcInName(QSE_NULL), srcOutName(QSE_NULL)
-	            
-	{
-	#ifdef _WIN32
-		heap = QSE_NULL;
-	#endif
-	}
-
-	~MyAwk ()
-	{
-		close ();
-	}
-
-	int open ()
-	{
-	#ifdef _WIN32
-		QSE_ASSERT (heap == QSE_NULL);
-		heap = ::HeapCreate (0, 1000000, 1000000);
-		if (heap == QSE_NULL) return -1;
-	#endif
-
-		int n = StdAwk::open ();
-		if (n <= -1)
-		{
-	#ifdef _WIN32
-			HeapDestroy (heap); 
-			heap = QSE_NULL;
-	#endif
-			return -1;
-		}
-
-		idLastSleep = addGlobal (QSE_T("LAST_SLEEP"));
-		if (idLastSleep <= -1) goto failure;
-
-		if (addFunction (QSE_T("sleep"), 1, 1,
-		    	(FunctionHandler)&MyAwk::sleep) <= -1) goto failure;
-
-		if (addFunction (QSE_T("sumintarray"), 1, 1,
-		    	(FunctionHandler)&MyAwk::sumintarray) <= -1) goto failure;
-
-		if (addFunction (QSE_T("arrayindices"), 1, 1,
-		    	(FunctionHandler)&MyAwk::arrayindices) <= -1) goto failure;
-		return 0;
-
-	failure:
-		StdAwk::close ();
-
-	#ifdef _WIN32
-		HeapDestroy (heap); 
-		heap = QSE_NULL;
-	#endif
-		return -1;
-	}
-
-	void close ()
-	{
-		StdAwk::close ();
-
-	#ifdef _WIN32
-		if (heap != QSE_NULL)
-		{
-			HeapDestroy (heap); 
-			heap = QSE_NULL;
-		}
-	#endif
-	}
-
-	int sleep (Run& run, Return& ret, const Argument* args, size_t nargs, 
-		const char_t* name, size_t len)
-	{
-		if (args[0].isIndexed()) 
-		{
-			run.setError (ERR_INVAL);
-			return -1;
-		}
-
-		long_t x = args[0].toInt();
-
-		/*Argument arg;
-		if (run.getGlobal(idLastSleep, arg) == 0)
-			qse_printf (QSE_T("GOOD: [%d]\n"), (int)arg.toInt());
-		else { qse_printf (QSE_T("BAD:\n")); }
-		*/
-
-		if (run.setGlobal (idLastSleep, x) <= -1) return -1;
-
-	#ifdef _WIN32
-		::Sleep ((DWORD)(x * 1000));
-		return ret.set ((long_t)0);
-	#else
-		return ret.set ((long_t)::sleep (x));
-	#endif
-	}
-
-	int sumintarray (Run& run, Return& ret, const Argument* args, size_t nargs, 
-		const char_t* name, size_t len)
-	{
-		long_t x = 0;
-
-		if (args[0].isIndexed()) 
-		{
-			Argument idx(run), val(run);
-
-			int n = args[0].getFirstIndex (idx);
-			while (n > 0)
-			{
-				size_t len;
-				const char_t* ptr = idx.toStr(&len);
-
-				if (args[0].getIndexed(ptr, len, val) <= -1) return -1;
-				x += val.toInt ();
-
-				n = args[0].getNextIndex (idx);
-			}
-			if (n != 0) return -1;
-		}
-		else x += args[0].toInt();
-
-		return ret.set (x);
-	}
-
-	int arrayindices (Run& run, Return& ret, const Argument* args, size_t nargs, 
-		const char_t* name, size_t len)
-	{
-		if (!args[0].isIndexed()) return 0;
-
-		Argument idx (run);
-		long_t i;
-
-		int n = args[0].getFirstIndex (idx);
-		for (i = 0; n > 0; i++)
-		{
-			size_t len;
-			const char_t* ptr = idx.toStr(&len);
-			n = args[0].getNextIndex (idx);
-			if (ret.setIndexed (i, ptr, len) <= -1) return -1;
-		}
-		if (n != 0) return -1;
-	
-		return 0;
-	}
-	
-	Run* parse (const char_t* in, const char_t* out)
-	{
-		srcInName = in;
-		srcOutName = out;
-		return StdAwk::parse ();
-	}
-
-protected:
-
-	bool onLoopEnter (Run& run)
-	{
-		set_intr_run ();
-		return true;
-	}
-
-	void onLoopExit (Run& run, const Argument& ret)
-	{
-		unset_intr_run ();
-
-		if (verbose)
-		{
-			size_t len;
-			const char_t* ptr = ret.toStr (&len);
-			qse_printf (QSE_T("*** return [%.*s] ***\n"), (int)len, ptr);
-		}
-	}
-	
-
-	int openSource (Source& io)
-	{
-		Source::Mode mode = io.getMode();
-		FILE* fp = QSE_NULL;
-
-		// TODO: use sio instead of stdio
-		if (mode == Source::READ)
-		{
-			if (srcInName == QSE_NULL) 
-			{
-				io.setHandle (stdin);
-				return 0;
-			}
-
-			if (srcInName[0] == QSE_T('\0')) fp = stdin;
-			else fp = qse_fopen (srcInName, QSE_T("r"));
-		}
-		else if (mode == Source::WRITE)
-		{
-			if (srcOutName == QSE_NULL)
-			{
-				io.setHandle (stdout);
-				return 0;
-			}
-
-			if (srcOutName[0] == QSE_T('\0')) fp = stdout;
-			else fp = qse_fopen (srcOutName, QSE_T("w"));
-		}
-
-		if (fp == QSE_NULL) return -1;
-		io.setHandle (fp);
-		return 1;
-	}
-
-	int closeSource (Source& io)
-	{
-		FILE* fp = (FILE*)io.getHandle();
-		if (fp == stdout || fp == stderr) fflush (fp);
-		if (fp != stdin && fp != stdout && fp != stderr) fclose (fp);
-		io.setHandle (QSE_NULL);
-		return 0;
-	}
-
-	ssize_t readSource (Source& io, char_t* buf, size_t len)
-	{
-		FILE* fp = (FILE*)io.getHandle();
-		ssize_t n = 0;
-
-		while (n < (ssize_t)len)
-		{
-			qse_cint_t c = qse_fgetc (fp);
-			if (c == QSE_CHAR_EOF) 
-			{
-				if (qse_ferror(fp)) n = -1;
-				break;
-			}
-
-			buf[n++] = c;
-			if (c == QSE_T('\n')) break;
-		}
-
-		return n;
-	}
-
-	ssize_t writeSource (Source& io, char_t* buf, size_t len)
-	{
-		FILE* fp = (FILE*)io.getHandle();
-		size_t left = len;
-
-		while (left > 0)
-		{
-			if (*buf == QSE_T('\0')) 
-			{
-				if (qse_fputc(*buf,fp) == QSE_CHAR_EOF) return -1;
-				left -= 1; buf += 1;
-			}
-			else
-			{
-				int chunk = (left > QSE_TYPE_MAX(int))? QSE_TYPE_MAX(int): (int)left;
-				int n = qse_fprintf (fp, QSE_T("%.*s"), chunk, buf);
-				if (n < 0 || n > chunk) return -1;
-				left -= n; buf += n;
-			}
-		}
-
-		return len;
-	}
-
-	void* allocMem (size_t n) throw ()
-	{ 
-	#ifdef _WIN32
-		return ::HeapAlloc (heap, 0, n);
-	#else
-		return ::malloc (n);
-	#endif
-	}
-
-	void* reallocMem (void* ptr, size_t n) throw ()
-	{ 
-	#ifdef _WIN32
-		if (ptr == NULL)
-			return ::HeapAlloc (heap, 0, n);
-		else
-			return ::HeapReAlloc (heap, 0, ptr, n);
-	#else
-		return ::realloc (ptr, n);
-	#endif
-	}
-
-	void freeMem (void* ptr) throw ()
-	{ 
-	#ifdef _WIN32
-		::HeapFree (heap, 0, ptr);
-	#else
-		::free (ptr);
-	#endif
-	}
-
-private:
-	const char_t* srcInName;
-	const char_t* srcOutName;
-	
-	int idLastSleep;
-
-#ifdef _WIN32
-	void* heap;
-#endif
-};
-
-#ifdef _WIN32
-static BOOL WINAPI stop_run (DWORD ctrl_type)
-{
-	if (ctrl_type == CTRL_C_EVENT ||
-	    ctrl_type == CTRL_CLOSE_EVENT)
-	{
-		if (app_awk) app_awk->stop ();
-		return TRUE;
-	}
-
-	return FALSE;
-}
-#else
-
-static int setsignal (int sig, void(*handler)(int), int restart)
-{
-	struct sigaction sa_int;
-
-	sa_int.sa_handler = handler;
-	sigemptyset (&sa_int.sa_mask);
-	
-	sa_int.sa_flags = 0;
-
-	if (restart)
-	{
-	#ifdef SA_RESTART
-		sa_int.sa_flags |= SA_RESTART;
-	#endif
-	}
+	if (line > 0)
+		qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s at LINE %lu\n"), msg, line);
 	else
-	{
-	#ifdef SA_INTERRUPT
-		sa_int.sa_flags |= SA_INTERRUPT;
-	#endif
-	}
-	return sigaction (sig, &sa_int, NULL);
-}
-
-static void stop_run (int sig)
-{
-	int e = errno;
-	if (app_awk) app_awk->stop ();
-	errno = e;
-}
-#endif
-
-static void set_intr_run (void)
-{
-#ifdef _WIN32
-	SetConsoleCtrlHandler (stop_run, TRUE);
-#else
-	/*setsignal (SIGINT, stop_run, 1); TO BE MORE COMPATIBLE WITH WIN32*/
-	setsignal (SIGINT, stop_run, 0);
-#endif
-}
-
-static void unset_intr_run (void)
-{
-#ifdef _WIN32
-	SetConsoleCtrlHandler (stop_run, FALSE);
-#else
-	setsignal (SIGINT, SIG_DFL, 1);
-#endif
-}
-
-static void print_error (const qse_char_t* msg)
-{
-	qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s\n"), msg);
-}
-
-static struct
-{
-	const qse_char_t* name;
-	MyAwk::Option   opt;
-} otab[] =
-{
-	{ QSE_T("implicit"),    MyAwk::OPT_IMPLICIT },
-	{ QSE_T("explicit"),    MyAwk::OPT_EXPLICIT },
-	{ QSE_T("bxor"),        MyAwk::OPT_BXOR },
-	{ QSE_T("shift"),       MyAwk::OPT_SHIFT },
-	{ QSE_T("idiv"),        MyAwk::OPT_IDIV },
-	{ QSE_T("rio"),         MyAwk::OPT_RIO },
-	{ QSE_T("rwpipe"),      MyAwk::OPT_RWPIPE },
-	{ QSE_T("newline"),     MyAwk::OPT_NEWLINE },
-	{ QSE_T("stripspaces"), MyAwk::OPT_STRIPSPACES },
-	{ QSE_T("nextofile"),   MyAwk::OPT_NEXTOFILE },
-	{ QSE_T("crlf"),        MyAwk::OPT_CRLF },
-	{ QSE_T("reset"),       MyAwk::OPT_RESET },
-	{ QSE_T("maptovar"),    MyAwk::OPT_MAPTOVAR },
-	{ QSE_T("pablock"),     MyAwk::OPT_PABLOCK }
-};
-
-static void print_usage (const qse_char_t* argv0)
-{
-	const qse_char_t* base;
-	int j;
+		qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s\n"), msg);
 	
-	base = qse_strrchr(argv0, QSE_T('/'));
-	if (base == QSE_NULL) base = qse_strrchr(argv0, QSE_T('\\'));
-	if (base == QSE_NULL) base = argv0; else base++;
+}
 
-	qse_printf (QSE_T("Usage: %s [-si file]? [-so file]? [-ci file]* [-co file]* [-w o:n]* \n"), base);
-	qse_printf (QSE_T("    -si file  Specify the input source file\n"));
-	qse_printf (QSE_T("              The source code is read from stdin when it is not specified\n"));
-	qse_printf (QSE_T("    -so file  Specify the output source file\n"));
-	qse_printf (QSE_T("              The deparsed code is not output when is it not specified\n"));
-	qse_printf (QSE_T("    -ci file  Specify the input console file\n"));
-	qse_printf (QSE_T("    -co file  Specify the output console file\n"));
-	qse_printf (QSE_T("    -w  o:n   Specify an old and new word pair\n"));
-	qse_printf (QSE_T("              o - an original word\n"));
-	qse_printf (QSE_T("              n - the new word to replace the original\n"));
-	qse_printf (QSE_T("    -v        Print extra messages\n"));
+static int run_awk (QSE::StdAwk& awk)
+{
+	QSE::StdAwk::Run* run;
 
+	const qse_char_t* script = QSE_T(
+		"function pa (x) {\n"
+		"	reset ret;\n"
+		"	for (i in x) { print i, \"=>\", x[i]; ret += x[i]; }\n"
+		"	return ret;\n"
+		"}\n"
+		"function pb (x) {\n"
+		"	reset ret;\n"
+		"	for (i in x) { ret[-i] = -x[i]; }\n"
+		"	return ret;\n"
+		"}"
+	);
 
-	qse_printf (QSE_T("\nYou may specify the following options to change the behavior of the interpreter.\n"));
-	for (j = 0; j < (int)QSE_COUNTOF(otab); j++)
+	QSE::StdAwk::SourceString in (script);
+	QSE::StdAwk::SourceFile out (QSE_T("awk07.out"));
+
+	// parse the script and deparse it to awk07.out
+	run = awk.parse (&in, &out);
+	if (run == QSE_NULL) return -1;
+
+	QSE::StdAwk::Value arg[1];
+
+	for (int i = 1; i <= 5; i++)
 	{
-		qse_printf (QSE_T("    -%-20s -no%-20s\n"), otab[j].name, otab[j].name);
+		if (arg[0].setIndexedInt (
+			run, QSE::StdAwk::Value::IntIndex(i), i*20) <= -1) return -1;
 	}
+
+	QSE::StdAwk::Value r;
+
+	// call the 'pa' function
+	if (awk.call (QSE_T("pa"), &r, arg, QSE_COUNTOF(arg)) <= -1) return -1;
+
+	// output the result in various types
+	qse_printf (QSE_T("RESULT: (int) [%lld]\n"), (long long)r.toInt());
+	qse_printf (QSE_T("        (real) [%Lf]\n"), (long double)r.toReal());
+	qse_printf (QSE_T("        (str) [%s]\n"), r.toStr(QSE_NULL));
+
+	// call the 'pb' function
+	if (awk.call (QSE_T("pb"), &r, arg, QSE_COUNTOF(arg)) <= -1) return -1;
+
+	// output the returned map.
+	QSE_ASSERT (r.isIndexed());
+
+	QSE::StdAwk::Value::IndexIterator iter;
+	QSE::StdAwk::Value::Index idx;
+	QSE::StdAwk::Value v;
+
+	qse_printf (QSE_T("RESULT:\n"));
+
+	iter = r.getFirstIndex (&idx);
+	while (iter != QSE::StdAwk::Value::IndexIterator::END)
+	{
+		if (r.getIndexed (idx, &v) <= -1) return -1;
+		
+		qse_printf (QSE_T("\t[%.*s]=>[%lld]\n"), 
+			(int)idx.len, idx.ptr, (long long)v.toInt());
+		
+		iter = r.getNextIndex (&idx, iter);
+	}
+
+	return 0;
 }
 
 static int awk_main (int argc, qse_char_t* argv[])
 {
-	MyAwk awk;
-	MyAwk::Run* run;
+	QSE::StdAwk awk;
 
-	int mode = 0;
-	const qse_char_t* srcin = QSE_T("");
-	const qse_char_t* srcout = NULL;
-	qse_size_t nsrcins = 0;
-	qse_size_t nsrcouts = 0;
+	int ret = awk.open();
 
-	if (awk.open() <= -1)
-	{
-		print_error (awk.getErrorMessage());
-		return -1;
-	}
+	// allow returning a map from a function and enable 'reset'
+	awk.setOption (
+		awk.getOption() | 
+		QSE::StdAwk::OPT_MAPTOVAR | 
+		QSE::StdAwk::OPT_RESET);
 
-	// ARGV[0]
-	if (awk.addArgument (QSE_T("awk05")) <= -1)
-	{
-		print_error (awk.getErrorMessage());
-		awk.close ();
-		return -1;
-	}
+	if (ret >= 0) ret = run_awk (awk);
+	if (ret <= -1) print_error (awk.getErrorLine(), awk.getErrorMessage());
 
-	for (int i = 1; i < argc; i++)
-	{
-		if (mode == 0)
-		{
-			if (qse_strcmp(argv[i], QSE_T("-si")) == 0) mode = 1;
-			else if (qse_strcmp(argv[i], QSE_T("-so")) == 0) mode = 2;
-			else if (qse_strcmp(argv[i], QSE_T("-ci")) == 0) mode = 3;
-			else if (qse_strcmp(argv[i], QSE_T("-co")) == 0) mode = 4;
-			else if (qse_strcmp(argv[i], QSE_T("-w")) == 0) mode = 5;
-			else if (qse_strcmp(argv[i], QSE_T("-v")) == 0)
-			{
-				verbose = true;
-			}
-			else 
-			{
-				if (argv[i][0] == QSE_T('-'))
-				{
-					int j;
-
-					if (argv[i][1] == QSE_T('n') && argv[i][2] == QSE_T('o'))
-					{
-						for (j = 0; j < (int)QSE_COUNTOF(otab); j++)
-						{
-							if (qse_strcmp(&argv[i][3], otab[j].name) == 0)
-							{
-								awk.setOption (awk.getOption() & ~otab[j].opt);
-								goto ok_valid;
-							}
-						}
-					}
-					else
-					{
-						for (j = 0; j < (int)QSE_COUNTOF(otab); j++)
-						{
-							if (qse_strcmp(&argv[i][1], otab[j].name) == 0)
-							{
-								awk.setOption (awk.getOption() | otab[j].opt);
-								goto ok_valid;
-							}
-						}
-					}
-				}
-
-				print_usage (argv[0]);
-				return -1;
-
-			ok_valid:
-				;
-			}
-		}
-		else
-		{
-			if (argv[i][0] == QSE_T('-'))
-			{
-				print_usage (argv[0]);
-				return -1;
-			}
-
-			if (mode == 1) // source input 
-			{
-				if (nsrcins != 0) 
-				{
-					print_usage (argv[0]);
-					return -1;
-				}
-	
-				srcin = argv[i];
-				nsrcins++;
-				mode = 0;
-			}
-			else if (mode == 2) // source output 
-			{
-				if (nsrcouts != 0) 
-				{
-					print_usage (argv[0]);
-					return -1;
-				}
-	
-				srcout = argv[i];
-				nsrcouts++;
-				mode = 0;
-			}
-			else if (mode == 3) // console input
-			{
-				if (awk.addArgument (argv[i]) <= -1)
-				{
-					print_error (QSE_T("too many console inputs"));
-					return -1;
-				}
-
-				mode = 0;
-			}
-			else if (mode == 4) // console output
-			{
-				if (awk.addConsoleOutput (argv[i]) <= -1)
-				{
-					print_error (QSE_T("too many console outputs"));
-					return -1;
-				}
-
-				mode = 0;
-			}
-			else if (mode == 5) // word replacement
-			{
-				const qse_char_t* p;
-				qse_size_t l;
-
-				p = qse_strchr(argv[i], QSE_T(':'));
-				if (p == QSE_NULL)
-				{
-					print_usage (argv[0]);
-					return -1;
-				}
-
-				l = qse_strlen (argv[i]);
-
-				awk.setWord (
-					argv[i], p - argv[i], 
-					p + 1, l - (p - argv[i] + 1));
-
-				mode = 0;
-			}
-		}
-	}
-
-	if (mode != 0)
-	{
-		print_usage (argv[0]);
-		awk.close ();
-		return -1;
-	}
-
-	run = awk.parse (srcin, srcout);
-	if (run == QSE_NULL)
-	{
-		qse_fprintf (stderr, QSE_T("cannot parse: LINE[%d] %s\n"), 
-			awk.getErrorLine(), awk.getErrorMessage());
-		awk.close ();
-		return -1;
-	}
-
-	awk.enableRunCallback ();
-	app_awk = &awk;
-
-	if (awk.loop () <= -1)
-	{
-		qse_fprintf (stderr, QSE_T("cannot run: LINE[%d] %s\n"), 
-			awk.getErrorLine(), awk.getErrorMessage());
-		awk.close ();
-		return -1;
-	}
-
-#if 0
-	MyAwk::Return args[2];
-
-	args[0].setRun (run);
-	args[1].setRun (run);
-
-	if (awk.call (QSE_T("add"), args, 2) <= -1)
-	{
-		qse_fprintf (stderr, QSE_T("cannot run: LINE[%d] %s\n"), 
-			awk.getErrorLine(), awk.getErrorMessage());
-		awk.close ();
-	}
-#endif
-
-	app_awk = QSE_NULL;
 	awk.close ();
-
-	return 0;
+	return -1;
 }
 
 int qse_main (int argc, qse_achar_t* argv[])
diff --git a/qse/samples/awk/awk08.cpp b/qse/samples/awk/awk08.cpp
new file mode 100644
index 00000000..c6421646
--- /dev/null
+++ b/qse/samples/awk/awk08.cpp
@@ -0,0 +1,671 @@
+/*
+ * $Id: Awk.cpp 341 2008-08-20 10:58:19Z baconevi $
+ *
+   Copyright 2006-2009 Chung, Hyung-Hwan.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+ */
+
+#include <qse/awk/StdAwk.hpp>
+#include <qse/cmn/str.h>
+#include <qse/cmn/stdio.h>
+#include <qse/cmn/main.h>
+
+#include <stdlib.h>
+#include <math.h>
+
+#if defined(_WIN32)
+#	include <windows.h>
+#else
+#	include <unistd.h>
+#	include <signal.h>
+#	include <errno.h>
+#endif
+
+class MyAwk;
+#ifdef _WIN32
+static BOOL WINAPI stop_run (DWORD ctrl_type);
+#else
+static void stop_run (int sig);
+#endif
+
+static void set_intr_run (void);
+static void unset_intr_run (void);
+
+MyAwk* app_awk = QSE_NULL;
+static bool verbose = false;
+
+class MyAwk: public QSE::StdAwk
+{
+public:
+	MyAwk (): srcInName(QSE_NULL), srcOutName(QSE_NULL)
+	            
+	{
+	#ifdef _WIN32
+		heap = QSE_NULL;
+	#endif
+	}
+
+	~MyAwk ()
+	{
+		close ();
+	}
+
+	int open ()
+	{
+	#ifdef _WIN32
+		QSE_ASSERT (heap == QSE_NULL);
+		heap = ::HeapCreate (0, 1000000, 1000000);
+		if (heap == QSE_NULL) return -1;
+	#endif
+
+		int n = StdAwk::open ();
+		if (n <= -1)
+		{
+	#ifdef _WIN32
+			HeapDestroy (heap); 
+			heap = QSE_NULL;
+	#endif
+			return -1;
+		}
+
+		idLastSleep = addGlobal (QSE_T("LAST_SLEEP"));
+		if (idLastSleep <= -1) goto failure;
+
+		if (addFunction (QSE_T("sleep"), 1, 1,
+		    	(FunctionHandler)&MyAwk::sleep) <= -1) goto failure;
+
+		if (addFunction (QSE_T("sumintarray"), 1, 1,
+		    	(FunctionHandler)&MyAwk::sumintarray) <= -1) goto failure;
+
+		if (addFunction (QSE_T("arrayindices"), 1, 1,
+		    	(FunctionHandler)&MyAwk::arrayindices) <= -1) goto failure;
+		return 0;
+
+	failure:
+		StdAwk::close ();
+
+	#ifdef _WIN32
+		HeapDestroy (heap); 
+		heap = QSE_NULL;
+	#endif
+		return -1;
+	}
+
+	void close ()
+	{
+		StdAwk::close ();
+
+	#ifdef _WIN32
+		if (heap != QSE_NULL)
+		{
+			HeapDestroy (heap); 
+			heap = QSE_NULL;
+		}
+	#endif
+	}
+
+	int sleep (Run& run, Return& ret, const Argument* args, size_t nargs, 
+		const char_t* name, size_t len)
+	{
+		if (args[0].isIndexed()) 
+		{
+			run.setError (ERR_INVAL);
+			return -1;
+		}
+
+		long_t x = args[0].toInt();
+
+		/*Argument arg;
+		if (run.getGlobal(idLastSleep, arg) == 0)
+			qse_printf (QSE_T("GOOD: [%d]\n"), (int)arg.toInt());
+		else { qse_printf (QSE_T("BAD:\n")); }
+		*/
+
+		if (run.setGlobal (idLastSleep, x) <= -1) return -1;
+
+	#ifdef _WIN32
+		::Sleep ((DWORD)(x * 1000));
+		return ret.set ((long_t)0);
+	#else
+		return ret.set ((long_t)::sleep (x));
+	#endif
+	}
+
+	int sumintarray (Run& run, Return& ret, const Argument* args, size_t nargs, 
+		const char_t* name, size_t len)
+	{
+		long_t x = 0;
+
+		if (args[0].isIndexed()) 
+		{
+			Argument idx(run), val(run);
+
+			int n = args[0].getFirstIndex (idx);
+			while (n > 0)
+			{
+				size_t len;
+				const char_t* ptr = idx.toStr(&len);
+
+				if (args[0].getIndexed(ptr, len, val) <= -1) return -1;
+				x += val.toInt ();
+
+				n = args[0].getNextIndex (idx);
+			}
+			if (n != 0) return -1;
+		}
+		else x += args[0].toInt();
+
+		return ret.set (x);
+	}
+
+	int arrayindices (Run& run, Return& ret, const Argument* args, size_t nargs, 
+		const char_t* name, size_t len)
+	{
+		if (!args[0].isIndexed()) return 0;
+
+		Argument idx (run);
+		long_t i;
+
+		int n = args[0].getFirstIndex (idx);
+		for (i = 0; n > 0; i++)
+		{
+			size_t len;
+			const char_t* ptr = idx.toStr(&len);
+			n = args[0].getNextIndex (idx);
+			if (ret.setIndexed (i, ptr, len) <= -1) return -1;
+		}
+		if (n != 0) return -1;
+	
+		return 0;
+	}
+	
+	Run* parse (const char_t* in, const char_t* out)
+	{
+		srcInName = in;
+		srcOutName = out;
+		return StdAwk::parse ();
+	}
+
+protected:
+
+	bool onLoopEnter (Run& run)
+	{
+		set_intr_run ();
+		return true;
+	}
+
+	void onLoopExit (Run& run, const Argument& ret)
+	{
+		unset_intr_run ();
+
+		if (verbose)
+		{
+			size_t len;
+			const char_t* ptr = ret.toStr (&len);
+			qse_printf (QSE_T("*** return [%.*s] ***\n"), (int)len, ptr);
+		}
+	}
+	
+
+	int openSource (Source& io)
+	{
+		Source::Mode mode = io.getMode();
+		FILE* fp = QSE_NULL;
+
+		// TODO: use sio instead of stdio
+		if (mode == Source::READ)
+		{
+			if (srcInName == QSE_NULL) 
+			{
+				io.setHandle (stdin);
+				return 0;
+			}
+
+			if (srcInName[0] == QSE_T('\0')) fp = stdin;
+			else fp = qse_fopen (srcInName, QSE_T("r"));
+		}
+		else if (mode == Source::WRITE)
+		{
+			if (srcOutName == QSE_NULL)
+			{
+				io.setHandle (stdout);
+				return 0;
+			}
+
+			if (srcOutName[0] == QSE_T('\0')) fp = stdout;
+			else fp = qse_fopen (srcOutName, QSE_T("w"));
+		}
+
+		if (fp == QSE_NULL) return -1;
+		io.setHandle (fp);
+		return 1;
+	}
+
+	int closeSource (Source& io)
+	{
+		FILE* fp = (FILE*)io.getHandle();
+		if (fp == stdout || fp == stderr) fflush (fp);
+		if (fp != stdin && fp != stdout && fp != stderr) fclose (fp);
+		io.setHandle (QSE_NULL);
+		return 0;
+	}
+
+	ssize_t readSource (Source& io, char_t* buf, size_t len)
+	{
+		FILE* fp = (FILE*)io.getHandle();
+		ssize_t n = 0;
+
+		while (n < (ssize_t)len)
+		{
+			qse_cint_t c = qse_fgetc (fp);
+			if (c == QSE_CHAR_EOF) 
+			{
+				if (qse_ferror(fp)) n = -1;
+				break;
+			}
+
+			buf[n++] = c;
+			if (c == QSE_T('\n')) break;
+		}
+
+		return n;
+	}
+
+	ssize_t writeSource (Source& io, char_t* buf, size_t len)
+	{
+		FILE* fp = (FILE*)io.getHandle();
+		size_t left = len;
+
+		while (left > 0)
+		{
+			if (*buf == QSE_T('\0')) 
+			{
+				if (qse_fputc(*buf,fp) == QSE_CHAR_EOF) return -1;
+				left -= 1; buf += 1;
+			}
+			else
+			{
+				int chunk = (left > QSE_TYPE_MAX(int))? QSE_TYPE_MAX(int): (int)left;
+				int n = qse_fprintf (fp, QSE_T("%.*s"), chunk, buf);
+				if (n < 0 || n > chunk) return -1;
+				left -= n; buf += n;
+			}
+		}
+
+		return len;
+	}
+
+	void* allocMem (size_t n) throw ()
+	{ 
+	#ifdef _WIN32
+		return ::HeapAlloc (heap, 0, n);
+	#else
+		return ::malloc (n);
+	#endif
+	}
+
+	void* reallocMem (void* ptr, size_t n) throw ()
+	{ 
+	#ifdef _WIN32
+		if (ptr == NULL)
+			return ::HeapAlloc (heap, 0, n);
+		else
+			return ::HeapReAlloc (heap, 0, ptr, n);
+	#else
+		return ::realloc (ptr, n);
+	#endif
+	}
+
+	void freeMem (void* ptr) throw ()
+	{ 
+	#ifdef _WIN32
+		::HeapFree (heap, 0, ptr);
+	#else
+		::free (ptr);
+	#endif
+	}
+
+private:
+	const char_t* srcInName;
+	const char_t* srcOutName;
+	
+	int idLastSleep;
+
+#ifdef _WIN32
+	void* heap;
+#endif
+};
+
+#ifdef _WIN32
+static BOOL WINAPI stop_run (DWORD ctrl_type)
+{
+	if (ctrl_type == CTRL_C_EVENT ||
+	    ctrl_type == CTRL_CLOSE_EVENT)
+	{
+		if (app_awk) app_awk->stop ();
+		return TRUE;
+	}
+
+	return FALSE;
+}
+#else
+
+static int setsignal (int sig, void(*handler)(int), int restart)
+{
+	struct sigaction sa_int;
+
+	sa_int.sa_handler = handler;
+	sigemptyset (&sa_int.sa_mask);
+	
+	sa_int.sa_flags = 0;
+
+	if (restart)
+	{
+	#ifdef SA_RESTART
+		sa_int.sa_flags |= SA_RESTART;
+	#endif
+	}
+	else
+	{
+	#ifdef SA_INTERRUPT
+		sa_int.sa_flags |= SA_INTERRUPT;
+	#endif
+	}
+	return sigaction (sig, &sa_int, NULL);
+}
+
+static void stop_run (int sig)
+{
+	int e = errno;
+	if (app_awk) app_awk->stop ();
+	errno = e;
+}
+#endif
+
+static void set_intr_run (void)
+{
+#ifdef _WIN32
+	SetConsoleCtrlHandler (stop_run, TRUE);
+#else
+	/*setsignal (SIGINT, stop_run, 1); TO BE MORE COMPATIBLE WITH WIN32*/
+	setsignal (SIGINT, stop_run, 0);
+#endif
+}
+
+static void unset_intr_run (void)
+{
+#ifdef _WIN32
+	SetConsoleCtrlHandler (stop_run, FALSE);
+#else
+	setsignal (SIGINT, SIG_DFL, 1);
+#endif
+}
+
+static void print_error (const qse_char_t* msg)
+{
+	qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s\n"), msg);
+}
+
+static struct
+{
+	const qse_char_t* name;
+	MyAwk::Option   opt;
+} otab[] =
+{
+	{ QSE_T("implicit"),    MyAwk::OPT_IMPLICIT },
+	{ QSE_T("explicit"),    MyAwk::OPT_EXPLICIT },
+	{ QSE_T("bxor"),        MyAwk::OPT_BXOR },
+	{ QSE_T("shift"),       MyAwk::OPT_SHIFT },
+	{ QSE_T("idiv"),        MyAwk::OPT_IDIV },
+	{ QSE_T("rio"),         MyAwk::OPT_RIO },
+	{ QSE_T("rwpipe"),      MyAwk::OPT_RWPIPE },
+	{ QSE_T("newline"),     MyAwk::OPT_NEWLINE },
+	{ QSE_T("stripspaces"), MyAwk::OPT_STRIPSPACES },
+	{ QSE_T("nextofile"),   MyAwk::OPT_NEXTOFILE },
+	{ QSE_T("crlf"),        MyAwk::OPT_CRLF },
+	{ QSE_T("reset"),       MyAwk::OPT_RESET },
+	{ QSE_T("maptovar"),    MyAwk::OPT_MAPTOVAR },
+	{ QSE_T("pablock"),     MyAwk::OPT_PABLOCK }
+};
+
+static void print_usage (const qse_char_t* argv0)
+{
+	const qse_char_t* base;
+	int j;
+	
+	base = qse_strrchr(argv0, QSE_T('/'));
+	if (base == QSE_NULL) base = qse_strrchr(argv0, QSE_T('\\'));
+	if (base == QSE_NULL) base = argv0; else base++;
+
+	qse_printf (QSE_T("Usage: %s [-si file]? [-so file]? [-ci file]* [-co file]* [-w o:n]* \n"), base);
+	qse_printf (QSE_T("    -si file  Specify the input source file\n"));
+	qse_printf (QSE_T("              The source code is read from stdin when it is not specified\n"));
+	qse_printf (QSE_T("    -so file  Specify the output source file\n"));
+	qse_printf (QSE_T("              The deparsed code is not output when is it not specified\n"));
+	qse_printf (QSE_T("    -ci file  Specify the input console file\n"));
+	qse_printf (QSE_T("    -co file  Specify the output console file\n"));
+	qse_printf (QSE_T("    -w  o:n   Specify an old and new word pair\n"));
+	qse_printf (QSE_T("              o - an original word\n"));
+	qse_printf (QSE_T("              n - the new word to replace the original\n"));
+	qse_printf (QSE_T("    -v        Print extra messages\n"));
+
+
+	qse_printf (QSE_T("\nYou may specify the following options to change the behavior of the interpreter.\n"));
+	for (j = 0; j < (int)QSE_COUNTOF(otab); j++)
+	{
+		qse_printf (QSE_T("    -%-20s -no%-20s\n"), otab[j].name, otab[j].name);
+	}
+}
+
+static int awk_main (int argc, qse_char_t* argv[])
+{
+	MyAwk awk;
+	MyAwk::Run* run;
+
+	int mode = 0;
+	const qse_char_t* srcin = QSE_T("");
+	const qse_char_t* srcout = NULL;
+	qse_size_t nsrcins = 0;
+	qse_size_t nsrcouts = 0;
+
+	if (awk.open() <= -1)
+	{
+		print_error (awk.getErrorMessage());
+		return -1;
+	}
+
+	// ARGV[0]
+	if (awk.addArgument (QSE_T("awk05")) <= -1)
+	{
+		print_error (awk.getErrorMessage());
+		awk.close ();
+		return -1;
+	}
+
+	for (int i = 1; i < argc; i++)
+	{
+		if (mode == 0)
+		{
+			if (qse_strcmp(argv[i], QSE_T("-si")) == 0) mode = 1;
+			else if (qse_strcmp(argv[i], QSE_T("-so")) == 0) mode = 2;
+			else if (qse_strcmp(argv[i], QSE_T("-ci")) == 0) mode = 3;
+			else if (qse_strcmp(argv[i], QSE_T("-co")) == 0) mode = 4;
+			else if (qse_strcmp(argv[i], QSE_T("-w")) == 0) mode = 5;
+			else if (qse_strcmp(argv[i], QSE_T("-v")) == 0)
+			{
+				verbose = true;
+			}
+			else 
+			{
+				if (argv[i][0] == QSE_T('-'))
+				{
+					int j;
+
+					if (argv[i][1] == QSE_T('n') && argv[i][2] == QSE_T('o'))
+					{
+						for (j = 0; j < (int)QSE_COUNTOF(otab); j++)
+						{
+							if (qse_strcmp(&argv[i][3], otab[j].name) == 0)
+							{
+								awk.setOption (awk.getOption() & ~otab[j].opt);
+								goto ok_valid;
+							}
+						}
+					}
+					else
+					{
+						for (j = 0; j < (int)QSE_COUNTOF(otab); j++)
+						{
+							if (qse_strcmp(&argv[i][1], otab[j].name) == 0)
+							{
+								awk.setOption (awk.getOption() | otab[j].opt);
+								goto ok_valid;
+							}
+						}
+					}
+				}
+
+				print_usage (argv[0]);
+				return -1;
+
+			ok_valid:
+				;
+			}
+		}
+		else
+		{
+			if (argv[i][0] == QSE_T('-'))
+			{
+				print_usage (argv[0]);
+				return -1;
+			}
+
+			if (mode == 1) // source input 
+			{
+				if (nsrcins != 0) 
+				{
+					print_usage (argv[0]);
+					return -1;
+				}
+	
+				srcin = argv[i];
+				nsrcins++;
+				mode = 0;
+			}
+			else if (mode == 2) // source output 
+			{
+				if (nsrcouts != 0) 
+				{
+					print_usage (argv[0]);
+					return -1;
+				}
+	
+				srcout = argv[i];
+				nsrcouts++;
+				mode = 0;
+			}
+			else if (mode == 3) // console input
+			{
+				if (awk.addArgument (argv[i]) <= -1)
+				{
+					print_error (QSE_T("too many console inputs"));
+					return -1;
+				}
+
+				mode = 0;
+			}
+			else if (mode == 4) // console output
+			{
+				if (awk.addConsoleOutput (argv[i]) <= -1)
+				{
+					print_error (QSE_T("too many console outputs"));
+					return -1;
+				}
+
+				mode = 0;
+			}
+			else if (mode == 5) // word replacement
+			{
+				const qse_char_t* p;
+				qse_size_t l;
+
+				p = qse_strchr(argv[i], QSE_T(':'));
+				if (p == QSE_NULL)
+				{
+					print_usage (argv[0]);
+					return -1;
+				}
+
+				l = qse_strlen (argv[i]);
+
+				awk.setWord (
+					argv[i], p - argv[i], 
+					p + 1, l - (p - argv[i] + 1));
+
+				mode = 0;
+			}
+		}
+	}
+
+	if (mode != 0)
+	{
+		print_usage (argv[0]);
+		awk.close ();
+		return -1;
+	}
+
+	run = awk.parse (srcin, srcout);
+	if (run == QSE_NULL)
+	{
+		qse_fprintf (stderr, QSE_T("cannot parse: LINE[%d] %s\n"), 
+			awk.getErrorLine(), awk.getErrorMessage());
+		awk.close ();
+		return -1;
+	}
+
+	awk.enableRunCallback ();
+	app_awk = &awk;
+
+	if (awk.loop () <= -1)
+	{
+		qse_fprintf (stderr, QSE_T("cannot run: LINE[%d] %s\n"), 
+			awk.getErrorLine(), awk.getErrorMessage());
+		awk.close ();
+		return -1;
+	}
+
+#if 0
+	MyAwk::Return args[2];
+
+	args[0].setRun (run);
+	args[1].setRun (run);
+
+	if (awk.call (QSE_T("add"), args, 2) <= -1)
+	{
+		qse_fprintf (stderr, QSE_T("cannot run: LINE[%d] %s\n"), 
+			awk.getErrorLine(), awk.getErrorMessage());
+		awk.close ();
+	}
+#endif
+
+	app_awk = QSE_NULL;
+	awk.close ();
+
+	return 0;
+}
+
+int qse_main (int argc, qse_achar_t* argv[])
+{
+	return qse_runmain (argc,argv,awk_main);
+}