diff --git a/qse/include/qse/awk/Awk.hpp b/qse/include/qse/awk/Awk.hpp
index 2d99a954..fef9d2bc 100644
--- a/qse/include/qse/awk/Awk.hpp
+++ b/qse/include/qse/awk/Awk.hpp
@@ -319,6 +319,16 @@ public:
 			CLOSE_WRITE = QSE_AWK_RIO_CLOSE_WRITE
 		};
 
+		class Handler 
+		{
+		public:
+			virtual int     open  (Pipe& io) = 0;
+			virtual int     close (Pipe& io) = 0;
+			virtual ssize_t read  (Pipe& io, char_t* buf, size_t len) = 0;
+			virtual ssize_t write (Pipe& io, const char_t* buf, size_t len) = 0;
+			virtual int     flush (Pipe& io) = 0;
+		};
+
 	protected:
 		Pipe (Run* run, rio_arg_t* riod);
 
@@ -351,6 +361,16 @@ public:
 			APPEND = QSE_AWK_RIO_FILE_APPEND
 		};
 
+		class Handler 
+		{
+		public:
+			virtual int     open  (File& io) = 0;
+			virtual int     close (File& io) = 0;
+			virtual ssize_t read  (File& io, char_t* buf, size_t len) = 0;
+			virtual ssize_t write (File& io, const char_t* buf, size_t len) = 0;
+			virtual int     flush (File& io) = 0;
+		};
+
 	protected:
 		File (Run* run, rio_arg_t* riod);
 
@@ -373,6 +393,17 @@ public:
 			WRITE = QSE_AWK_RIO_CONSOLE_WRITE
 		};
 
+		class Handler 
+		{
+		public:
+			virtual int     open  (Console& io) = 0;
+			virtual int     close (Console& io) = 0;
+			virtual ssize_t read  (Console& io, char_t* buf, size_t len) = 0;
+			virtual ssize_t write (Console& io, const char_t* buf, size_t len) = 0;
+			virtual int     flush (Console& io) = 0;
+			virtual int     next  (Console& io) = 0;
+		};
+
 	protected:
 		Console (Run* run, rio_arg_t* riod);
 		~Console ();
@@ -386,6 +417,7 @@ public:
 		char_t* filename;
 	};
 
+
 	///
 	/// The Value class wraps around #qse_awk_val_t to provide a more 
 	/// comprehensive interface.
@@ -1050,50 +1082,119 @@ public:
 	);
 	/// @}
 
+	Pipe::Handler* getPipeHandler ()
+	{
+		return this->pipe_handler;
+	}
+
+	const Pipe::Handler* getPipeHandler () const
+	{
+		return this->pipe_handler;
+	}
+
+	///
+	/// The setPipeHandler() function registers an external pipe
+	/// handler object. An external pipe handler can be implemented
+	/// outside this class without overriding various pipe functions.
+	/// Note that an external pipe handler must outlive an outer
+	/// awk object.
+	/// 
+	void setPipeHandler (Pipe::Handler* handler)
+	{
+		this->pipe_handler = handler;
+	}
+
+	File::Handler* getFileHandler ()
+	{
+		return this->file_handler;
+	}
+
+	const File::Handler* getFileHandler () const
+	{
+		return this->file_handler;
+	}
+
+	///
+	/// The setFileHandler() function registers an external file
+	/// handler object. An external file handler can be implemented
+	/// outside this class without overriding various file functions.
+	/// Note that an external file handler must outlive an outer
+	/// awk object.
+	/// 
+	void setFileHandler (File::Handler* handler)
+	{
+		this->file_handler = handler;
+	}
+
+	Console::Handler* getConsoleHandler ()
+	{
+		return this->console_handler;
+	}
+
+	const Console::Handler* getConsoleHandler () const
+	{
+		return this->console_handler;
+	}
+
+	///
+	/// The setConsoleHandler() function registers an external console
+	/// handler object. An external file handler can be implemented
+	/// outside this class without overriding various console functions.
+	/// Note that an external console handler must outlive an outer
+	/// awk object.
+	/// 
+	void setConsoleHandler (Console::Handler* handler)
+	{
+		this->console_handler = handler;
+	}
+
 protected:
 	/// 
 	/// @name Pipe I/O handlers
-	/// Pipe operations are achieved through the following functions.
+	/// Pipe operations are achieved through the following functions
+	/// if no external pipe handler is set with setPipeHandler().
 	/// @{
 
 	/// The openPipe() function is a pure virtual function that must be
 	/// overridden by a child class to open a pipe. It must return 1
 	/// on success, 0 on end of a pipe, and -1 on failure.
-	virtual int     openPipe  (Pipe& io) = 0;
+	virtual int     openPipe  (Pipe& io);
 
 	/// The closePipe() function is a pure virtual function that must be
 	/// overridden by a child class to close a pipe. It must return 0
 	/// on success and -1 on failure.
-	virtual int     closePipe (Pipe& io) = 0;
+	virtual int     closePipe (Pipe& io);
 
-	virtual ssize_t readPipe  (Pipe& io, char_t* buf, size_t len) = 0;
-	virtual ssize_t writePipe (Pipe& io, const char_t* buf, size_t len) = 0;
-	virtual int     flushPipe (Pipe& io) = 0;
+	virtual ssize_t readPipe  (Pipe& io, char_t* buf, size_t len);
+	virtual ssize_t writePipe (Pipe& io, const char_t* buf, size_t len);
+	virtual int     flushPipe (Pipe& io);
 	/// @}
 
 	/// 
 	/// @name File I/O handlers
-	/// File operations are achieved through the following functions.
+	/// File operations are achieved through the following functions
+	/// if no external file handler is set with setFileHandler().
 	/// @{
 	///
-	virtual int     openFile  (File& io) = 0;
-	virtual int     closeFile (File& io) = 0;
-	virtual ssize_t readFile  (File& io, char_t* buf, size_t len) = 0;
-	virtual ssize_t writeFile (File& io, const char_t* buf, size_t len) = 0;
-	virtual int     flushFile (File& io) = 0;
+	virtual int     openFile  (File& io);
+	virtual int     closeFile (File& io);
+	virtual ssize_t readFile  (File& io, char_t* buf, size_t len);
+	virtual ssize_t writeFile (File& io, const char_t* buf, size_t len);
+	virtual int     flushFile (File& io);
 	/// @}
 
 	/// 
 	/// @name Console I/O handlers
 	/// Console operations are achieved through the following functions.
+	/// if no external console handler is set with setConsoleHandler().
 	/// @{
 	///
-	virtual int     openConsole  (Console& io) = 0;
-	virtual int     closeConsole (Console& io) = 0;
-	virtual ssize_t readConsole  (Console& io, char_t* buf, size_t len) = 0;
-	virtual ssize_t writeConsole (Console& io, const char_t* buf, size_t len) = 0;
-	virtual int     flushConsole (Console& io) = 0;
-	virtual int     nextConsole  (Console& io) = 0;
+	virtual int     openConsole  (Console& io);
+	virtual int     closeConsole (Console& io);
+	virtual ssize_t readConsole  (Console& io, char_t* buf, size_t len);
+	virtual ssize_t writeConsole (Console& io, const char_t* buf, size_t len);
+	virtual int     flushConsole (Console& io);
+	virtual int     nextConsole  (Console& io);
 	/// @}
 
 	// primitive handlers 
@@ -1132,8 +1233,9 @@ protected:
 
 	static int functionHandler (rtx_t* rtx, const cstr_t* name);
 
-	static int    sprintf (awk_t* data, char_t* buf, size_t size,
-	                       const char_t* fmt, ...);
+
+	static int   sprintf (awk_t* data, char_t* buf, size_t size,
+	                      const char_t* fmt, ...);
 	static flt_t pow     (awk_t* data, flt_t x, flt_t y);
 	static flt_t mod     (awk_t* data, flt_t x, flt_t y);
 	static flt_t sin     (awk_t* data, flt_t x);
@@ -1154,8 +1256,12 @@ protected:
 
 	htb_t* functionMap;
 
-	Source* sourceReader;
-	Source* sourceWriter;
+	Source* source_reader;
+	Source* source_writer;
+
+	Pipe::Handler* pipe_handler;
+	File::Handler* file_handler;
+	Console::Handler* console_handler;
 
 	struct xstrs_t
 	{
diff --git a/qse/include/qse/awk/StdAwk.hpp b/qse/include/qse/awk/StdAwk.hpp
index 020cf868..7729b688 100644
--- a/qse/include/qse/awk/StdAwk.hpp
+++ b/qse/include/qse/awk/StdAwk.hpp
@@ -40,8 +40,19 @@
 /// This program shows how to add intrinsic functions.
 ///
 /// @example awk12.cpp
-/// This program shows how to override console methods to use a
+/// This program shows how to override console methods to use 
 /// string buffers for console input and output.
+///
+/// @example awk13.cpp
+/// This program shows how to use resetRunContext(). It is similar
+/// to awk12.cpp in principle.
+///
+/// @example awk14.cpp
+/// This program shows how to define a console handler to use
+/// string buffers for console input and output. It is identical
+/// to awk13.cpp except that it relies an external console handler
+/// rather than overriding console methods.
+///
 
 /////////////////////////////////
 QSE_BEGIN_NAMESPACE(QSE)
diff --git a/qse/include/qse/awk/awk.h b/qse/include/qse/awk/awk.h
index 5706f4a5..cb68e265 100644
--- a/qse/include/qse/awk/awk.h
+++ b/qse/include/qse/awk/awk.h
@@ -850,6 +850,7 @@ enum qse_awk_errnum_t
 {
 	QSE_AWK_ENOERR,  /**< no error */
 	QSE_AWK_EINTERN, /**< internal error */
+	QSE_AWK_ENOIMPL, /**< not implemented */
 
 	/* common errors */
 	QSE_AWK_ENOMEM,  /**< insufficient memory */
diff --git a/qse/lib/awk/Awk.cpp b/qse/lib/awk/Awk.cpp
index 6a2667a5..45047494 100644
--- a/qse/lib/awk/Awk.cpp
+++ b/qse/lib/awk/Awk.cpp
@@ -960,7 +960,10 @@ int Awk::Run::getGlobal (int id, Value& g) const
 //////////////////////////////////////////////////////////////////
 
 Awk::Awk (Mmgr* mmgr): 
-	Mmged (mmgr), awk (QSE_NULL), functionMap (QSE_NULL), runctx (this)
+	Mmged (mmgr), awk (QSE_NULL), functionMap (QSE_NULL), 
+	source_reader (QSE_NULL), source_writer (QSE_NULL),
+	pipe_handler (QSE_NULL), file_handler (QSE_NULL), 
+	console_handler (QSE_NULL), runctx (this)
 
 {
 	QSE_MEMSET (&errinf, 0, QSE_SIZEOF(errinf));
@@ -1162,12 +1165,12 @@ Awk::Run* Awk::parse (Source& in, Source& out)
 
 	fini_runctx ();
 
-	sourceReader = &in;
-	sourceWriter = (&out == &Source::NONE)? QSE_NULL: &out;
+	source_reader = &in;
+	source_writer = (&out == &Source::NONE)? QSE_NULL: &out;
 
 	qse_awk_sio_t sio;
 	sio.in = readSource;
-	sio.out = (sourceWriter == QSE_NULL)? QSE_NULL: writeSource;
+	sio.out = (source_writer == QSE_NULL)? QSE_NULL: writeSource;
 
 	int n = qse_awk_parse (awk, &sio);
 	if (n <= -1) 
@@ -1592,11 +1595,11 @@ Awk::ssize_t Awk::readSource (
 	switch (cmd)
 	{
 		case QSE_AWK_SIO_OPEN:
-			return xtn->awk->sourceReader->open (sdat);
+			return xtn->awk->source_reader->open (sdat);
 		case QSE_AWK_SIO_CLOSE:
-			return xtn->awk->sourceReader->close (sdat);
+			return xtn->awk->source_reader->close (sdat);
 		case QSE_AWK_SIO_READ:
-			return xtn->awk->sourceReader->read (sdat, data, count);
+			return xtn->awk->source_reader->read (sdat, data, count);
 		default:
 			return -1;
 	}
@@ -1612,11 +1615,11 @@ Awk::ssize_t Awk::writeSource (
 	switch (cmd)
 	{
 		case QSE_AWK_SIO_OPEN:
-			return xtn->awk->sourceWriter->open (sdat);
+			return xtn->awk->source_writer->open (sdat);
 		case QSE_AWK_SIO_CLOSE:
-			return xtn->awk->sourceWriter->close (sdat);
+			return xtn->awk->source_writer->close (sdat);
 		case QSE_AWK_SIO_WRITE:
-			return xtn->awk->sourceWriter->write (sdat, data, count);
+			return xtn->awk->source_writer->write (sdat, data, count);
 		default:
 			return -1;
 	}
@@ -1635,23 +1638,47 @@ Awk::ssize_t Awk::pipeHandler (
 
 	try
 	{	
-		switch (cmd)
+		if (awk->pipe_handler)
 		{
-			case QSE_AWK_RIO_OPEN:
-				return awk->openPipe (pipe);
-			case QSE_AWK_RIO_CLOSE:
-				return awk->closePipe (pipe);
-
-			case QSE_AWK_RIO_READ:
-				return awk->readPipe (pipe, data, count);
-			case QSE_AWK_RIO_WRITE:
-				return awk->writePipe (pipe, data, count);
-
-			case QSE_AWK_RIO_FLUSH:
-				return awk->flushPipe (pipe);
-
-			default:
-				return -1;
+			switch (cmd)
+			{
+				case QSE_AWK_RIO_OPEN:
+					return awk->pipe_handler->open (pipe);
+				case QSE_AWK_RIO_CLOSE:
+					return awk->pipe_handler->close (pipe);
+	
+				case QSE_AWK_RIO_READ:
+					return awk->pipe_handler->read (pipe, data, count);
+				case QSE_AWK_RIO_WRITE:
+					return awk->pipe_handler->write (pipe, data, count);
+	
+				case QSE_AWK_RIO_FLUSH:
+					return awk->pipe_handler->flush (pipe);
+	
+				default:
+					return -1;
+			}
+		}
+		else
+		{
+			switch (cmd)
+			{
+				case QSE_AWK_RIO_OPEN:
+					return awk->openPipe (pipe);
+				case QSE_AWK_RIO_CLOSE:
+					return awk->closePipe (pipe);
+	
+				case QSE_AWK_RIO_READ:
+					return awk->readPipe (pipe, data, count);
+				case QSE_AWK_RIO_WRITE:
+					return awk->writePipe (pipe, data, count);
+	
+				case QSE_AWK_RIO_FLUSH:
+					return awk->flushPipe (pipe);
+	
+				default:
+					return -1;
+			}
 		}
 	}
 	catch (...)
@@ -1673,23 +1700,47 @@ Awk::ssize_t Awk::fileHandler (
 
 	try
 	{
-		switch (cmd)
+		if (awk->file_handler)
 		{
-			case QSE_AWK_RIO_OPEN:
-				return awk->openFile (file);
-			case QSE_AWK_RIO_CLOSE:
-				return awk->closeFile (file);
+			switch (cmd)
+			{
+				case QSE_AWK_RIO_OPEN:
+					return awk->file_handler->open (file);
+				case QSE_AWK_RIO_CLOSE:
+					return awk->file_handler->close (file);
+	
+				case QSE_AWK_RIO_READ:
+					return awk->file_handler->read (file, data, count);
+				case QSE_AWK_RIO_WRITE:
+					return awk->file_handler->write (file, data, count);
+	
+				case QSE_AWK_RIO_FLUSH:
+					return awk->file_handler->flush (file);
+	
+				default:
+					return -1;
+			}
+		}
+		else
+		{
+			switch (cmd)
+			{
+				case QSE_AWK_RIO_OPEN:
+					return awk->openFile (file);
+				case QSE_AWK_RIO_CLOSE:
+					return awk->closeFile (file);
 
-			case QSE_AWK_RIO_READ:
-				return awk->readFile (file, data, count);
-			case QSE_AWK_RIO_WRITE:
-				return awk->writeFile (file, data, count);
+				case QSE_AWK_RIO_READ:
+					return awk->readFile (file, data, count);
+				case QSE_AWK_RIO_WRITE:
+					return awk->writeFile (file, data, count);
 
-			case QSE_AWK_RIO_FLUSH:
-				return awk->flushFile (file);
+				case QSE_AWK_RIO_FLUSH:
+					return awk->flushFile (file);
 
-			default:
-				return -1;
+				default:
+					return -1;
+			}
 		}
 	}
 	catch (...)
@@ -1711,25 +1762,51 @@ Awk::ssize_t Awk::consoleHandler (
 
 	try
 	{
-		switch (cmd)
+		if (awk->console_handler)
 		{
-			case QSE_AWK_RIO_OPEN:
-				return awk->openConsole (console);
-			case QSE_AWK_RIO_CLOSE:
-				return awk->closeConsole (console);
+			switch (cmd)
+			{
+				case QSE_AWK_RIO_OPEN:
+					return awk->console_handler->open (console);
+				case QSE_AWK_RIO_CLOSE:
+					return awk->console_handler->close (console);
 
-			case QSE_AWK_RIO_READ:
-				return awk->readConsole (console, data, count);
-			case QSE_AWK_RIO_WRITE:
-				return awk->writeConsole (console, data, count);
+				case QSE_AWK_RIO_READ:
+					return awk->console_handler->read (console, data, count);
+				case QSE_AWK_RIO_WRITE:
+					return awk->console_handler->write (console, data, count);
 
-			case QSE_AWK_RIO_FLUSH:
-				return awk->flushConsole (console);
-			case QSE_AWK_RIO_NEXT:
-				return awk->nextConsole (console);
+				case QSE_AWK_RIO_FLUSH:
+					return awk->console_handler->flush (console);
+				case QSE_AWK_RIO_NEXT:
+					return awk->console_handler->next (console);
 
-			default:
-				return -1;
+				default:
+					return -1;
+			}
+		}
+		else
+		{
+			switch (cmd)
+			{
+				case QSE_AWK_RIO_OPEN:
+					return awk->openConsole (console);
+				case QSE_AWK_RIO_CLOSE:
+					return awk->closeConsole (console);
+
+				case QSE_AWK_RIO_READ:
+					return awk->readConsole (console, data, count);
+				case QSE_AWK_RIO_WRITE:
+					return awk->writeConsole (console, data, count);
+
+				case QSE_AWK_RIO_FLUSH:
+					return awk->flushConsole (console);
+				case QSE_AWK_RIO_NEXT:
+					return awk->nextConsole (console);
+
+				default:
+					return -1;
+			}
 		}
 	}
 	catch (...)
@@ -1738,6 +1815,102 @@ Awk::ssize_t Awk::consoleHandler (
 	}
 }
 
+int Awk::openPipe  (Pipe& io)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+int Awk::closePipe (Pipe& io)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+Awk::ssize_t Awk::readPipe (Pipe& io, char_t* buf, size_t len)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+Awk::ssize_t Awk::writePipe (Pipe& io, const char_t* buf, size_t len)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+int Awk::flushPipe (Pipe& io)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+int Awk::openFile  (File& io)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+int Awk::closeFile (File& io)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+Awk::ssize_t Awk::readFile (File& io, char_t* buf, size_t len)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+Awk::ssize_t Awk::writeFile (File& io, const char_t* buf, size_t len)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+int Awk::flushFile (File& io)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+int Awk::openConsole  (Console& io)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+int Awk::closeConsole (Console& io)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+Awk::ssize_t Awk::readConsole (Console& io, char_t* buf, size_t len)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+Awk::ssize_t Awk::writeConsole (Console& io, const char_t* buf, size_t len)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+int Awk::flushConsole (Console& io)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
+int Awk::nextConsole (Console& io)
+{
+	((Run*)io)->setError (QSE_AWK_ENOIMPL);
+	return -1;
+}
+
 int Awk::functionHandler (rtx_t* rtx, const cstr_t* name)
 {
 	rxtn_t* rxtn = (rxtn_t*) QSE_XTN (rtx);
diff --git a/qse/lib/awk/err.c b/qse/lib/awk/err.c
index 773e367b..e7bee65c 100644
--- a/qse/lib/awk/err.c
+++ b/qse/lib/awk/err.c
@@ -26,6 +26,7 @@ const qse_char_t* qse_awk_dflerrstr (qse_awk_t* awk, qse_awk_errnum_t errnum)
  	{
 		QSE_T("no error"),
 		QSE_T("internal error that should never have happened"),
+		QSE_T("not implemented"),
 
 		QSE_T("insufficient memory"),
 		QSE_T("invalid parameter or data"),
diff --git a/qse/samples/awk/Makefile.am b/qse/samples/awk/Makefile.am
index 4a3e27b5..ec403953 100644
--- a/qse/samples/awk/Makefile.am
+++ b/qse/samples/awk/Makefile.am
@@ -26,7 +26,7 @@ if ENABLE_CXX
 
 CXXLIB = -lqseawkxx -lqsecmnxx
 
-bin_PROGRAMS += awk05 awk06 awk07 awk08 awk12 awk13
+bin_PROGRAMS += awk05 awk06 awk07 awk08 awk12 awk13 awk14
 
 awk05_SOURCES = awk05.cpp
 awk06_SOURCES = awk06.cpp
@@ -34,6 +34,7 @@ awk07_SOURCES = awk07.cpp
 awk08_SOURCES = awk08.cpp
 awk12_SOURCES = awk12.cpp
 awk13_SOURCES = awk13.cpp
+awk14_SOURCES = awk14.cpp
 
 awk05_LDADD = $(CXXLIB) $(LDADD)
 awk06_LDADD = $(CXXLIB) $(LDADD)
@@ -41,4 +42,5 @@ awk07_LDADD = $(CXXLIB) $(LDADD)
 awk08_LDADD = $(CXXLIB) $(LDADD)
 awk12_LDADD = $(CXXLIB) $(LDADD)
 awk13_LDADD = $(CXXLIB) $(LDADD)
+awk14_LDADD = $(CXXLIB) $(LDADD)
 endif
diff --git a/qse/samples/awk/Makefile.in b/qse/samples/awk/Makefile.in
index c0ccfaae..157a1784 100644
--- a/qse/samples/awk/Makefile.in
+++ b/qse/samples/awk/Makefile.in
@@ -38,7 +38,7 @@ bin_PROGRAMS = awk01$(EXEEXT) awk02$(EXEEXT) awk03$(EXEEXT) \
 	awk04$(EXEEXT) awk09$(EXEEXT) awk10$(EXEEXT) awk11$(EXEEXT) \
 	$(am__EXEEXT_1)
 @WIN32_TRUE@am__append_1 = $(UNICOWS_LIBS)
-@ENABLE_CXX_TRUE@am__append_2 = awk05 awk06 awk07 awk08 awk12 awk13
+@ENABLE_CXX_TRUE@am__append_2 = awk05 awk06 awk07 awk08 awk12 awk13 awk14
 subdir = samples/awk
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
@@ -55,7 +55,7 @@ CONFIG_CLEAN_FILES =
 CONFIG_CLEAN_VPATH_FILES =
 @ENABLE_CXX_TRUE@am__EXEEXT_1 = awk05$(EXEEXT) awk06$(EXEEXT) \
 @ENABLE_CXX_TRUE@	awk07$(EXEEXT) awk08$(EXEEXT) awk12$(EXEEXT) \
-@ENABLE_CXX_TRUE@	awk13$(EXEEXT)
+@ENABLE_CXX_TRUE@	awk13$(EXEEXT) awk14$(EXEEXT)
 am__installdirs = "$(DESTDIR)$(bindir)"
 PROGRAMS = $(bin_PROGRAMS)
 am_awk01_OBJECTS = awk01.$(OBJEXT)
@@ -119,6 +119,11 @@ am__awk13_SOURCES_DIST = awk13.cpp
 awk13_OBJECTS = $(am_awk13_OBJECTS)
 @ENABLE_CXX_TRUE@awk13_DEPENDENCIES = $(am__DEPENDENCIES_1) \
 @ENABLE_CXX_TRUE@	$(am__DEPENDENCIES_3)
+am__awk14_SOURCES_DIST = awk14.cpp
+@ENABLE_CXX_TRUE@am_awk14_OBJECTS = awk14.$(OBJEXT)
+awk14_OBJECTS = $(am_awk14_OBJECTS)
+@ENABLE_CXX_TRUE@awk14_DEPENDENCIES = $(am__DEPENDENCIES_1) \
+@ENABLE_CXX_TRUE@	$(am__DEPENDENCIES_3)
 DEFAULT_INCLUDES = 
 depcomp = $(SHELL) $(top_srcdir)/ac/depcomp
 am__depfiles_maybe = depfiles
@@ -145,13 +150,13 @@ SOURCES = $(awk01_SOURCES) $(awk02_SOURCES) $(awk03_SOURCES) \
 	$(awk04_SOURCES) $(awk05_SOURCES) $(awk06_SOURCES) \
 	$(awk07_SOURCES) $(awk08_SOURCES) $(awk09_SOURCES) \
 	$(awk10_SOURCES) $(awk11_SOURCES) $(awk12_SOURCES) \
-	$(awk13_SOURCES)
+	$(awk13_SOURCES) $(awk14_SOURCES)
 DIST_SOURCES = $(awk01_SOURCES) $(awk02_SOURCES) $(awk03_SOURCES) \
 	$(awk04_SOURCES) $(am__awk05_SOURCES_DIST) \
 	$(am__awk06_SOURCES_DIST) $(am__awk07_SOURCES_DIST) \
 	$(am__awk08_SOURCES_DIST) $(awk09_SOURCES) $(awk10_SOURCES) \
 	$(awk11_SOURCES) $(am__awk12_SOURCES_DIST) \
-	$(am__awk13_SOURCES_DIST)
+	$(am__awk13_SOURCES_DIST) $(am__awk14_SOURCES_DIST)
 ETAGS = etags
 CTAGS = ctags
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
@@ -322,12 +327,14 @@ awk11_SOURCES = awk11.c
 @ENABLE_CXX_TRUE@awk08_SOURCES = awk08.cpp
 @ENABLE_CXX_TRUE@awk12_SOURCES = awk12.cpp
 @ENABLE_CXX_TRUE@awk13_SOURCES = awk13.cpp
+@ENABLE_CXX_TRUE@awk14_SOURCES = awk14.cpp
 @ENABLE_CXX_TRUE@awk05_LDADD = $(CXXLIB) $(LDADD)
 @ENABLE_CXX_TRUE@awk06_LDADD = $(CXXLIB) $(LDADD)
 @ENABLE_CXX_TRUE@awk07_LDADD = $(CXXLIB) $(LDADD)
 @ENABLE_CXX_TRUE@awk08_LDADD = $(CXXLIB) $(LDADD)
 @ENABLE_CXX_TRUE@awk12_LDADD = $(CXXLIB) $(LDADD)
 @ENABLE_CXX_TRUE@awk13_LDADD = $(CXXLIB) $(LDADD)
+@ENABLE_CXX_TRUE@awk14_LDADD = $(CXXLIB) $(LDADD)
 all: all-am
 
 .SUFFIXES:
@@ -444,6 +451,9 @@ awk12$(EXEEXT): $(awk12_OBJECTS) $(awk12_DEPENDENCIES) $(EXTRA_awk12_DEPENDENCIE
 awk13$(EXEEXT): $(awk13_OBJECTS) $(awk13_DEPENDENCIES) $(EXTRA_awk13_DEPENDENCIES) 
 	@rm -f awk13$(EXEEXT)
 	$(CXXLINK) $(awk13_OBJECTS) $(awk13_LDADD) $(LIBS)
+awk14$(EXEEXT): $(awk14_OBJECTS) $(awk14_DEPENDENCIES) $(EXTRA_awk14_DEPENDENCIES) 
+	@rm -f awk14$(EXEEXT)
+	$(CXXLINK) $(awk14_OBJECTS) $(awk14_LDADD) $(LIBS)
 
 mostlyclean-compile:
 	-rm -f *.$(OBJEXT)
@@ -464,6 +474,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/awk11.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/awk12.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/awk13.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/awk14.Po@am__quote@
 
 .c.o:
 @am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
diff --git a/qse/samples/awk/awk12.cpp b/qse/samples/awk/awk12.cpp
index 20c07014..359abd09 100644
--- a/qse/samples/awk/awk12.cpp
+++ b/qse/samples/awk/awk12.cpp
@@ -153,7 +153,7 @@ static int run_awk (MyAwk& awk)
 	if (x >= 0)
 	{
 		qse_printf (QSE_T("%s"), awk.getOutput()); // print the console output
-		qse_printf (QSE_T("-----------------------------\n"), awk.getOutput());
+		qse_printf (QSE_T("-----------------------------\n"));
 
 		// prepare a string to print lines with A in the fourth column
 		MyAwk::SourceString in2 (QSE_T("$4 == \"A\" { print $1; }")); 
@@ -167,7 +167,7 @@ static int run_awk (MyAwk& awk)
 		if (x >= 0)
 		{
 			qse_printf (QSE_T("%s"), awk.getOutput());
-			qse_printf (QSE_T("-----------------------------\n"), awk.getOutput());
+			qse_printf (QSE_T("-----------------------------\n"));
 		}
 	}
 
diff --git a/qse/samples/awk/awk13.cpp b/qse/samples/awk/awk13.cpp
index 231d11fe..11b8748d 100644
--- a/qse/samples/awk/awk13.cpp
+++ b/qse/samples/awk/awk13.cpp
@@ -174,7 +174,7 @@ static int run_awk (MyAwk& awk)
 	if (x >= 0)
 	{
 		qse_printf (QSE_T("%s"), awk.getOutput()); // print the console output
-		qse_printf (QSE_T("-----------------------------\n"), awk.getOutput());
+		qse_printf (QSE_T("-----------------------------\n"));
 
 		awk.setInput (instr2);
 
@@ -187,7 +187,7 @@ static int run_awk (MyAwk& awk)
 		if (x >= 0)
 		{
 			qse_printf (QSE_T("%s"), awk.getOutput());
-			qse_printf (QSE_T("-----------------------------\n"), awk.getOutput());
+			qse_printf (QSE_T("-----------------------------\n"));
 		}
 	}
 
diff --git a/qse/samples/awk/awk14.cpp b/qse/samples/awk/awk14.cpp
new file mode 100644
index 00000000..e27f1a0f
--- /dev/null
+++ b/qse/samples/awk/awk14.cpp
@@ -0,0 +1,240 @@
+/*
+ * $Id$
+ *
+    Copyright 2006-2011 Chung, Hyung-Hwan.
+    This file is part of QSE.
+
+    QSE is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as 
+    published by the Free Software Foundation, either version 3 of 
+    the License, or (at your option) any later version.
+
+    QSE is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public 
+    License along with QSE. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <qse/awk/StdAwk.hpp>
+#include <qse/cmn/stdio.h>
+#include <qse/cmn/main.h>
+#include <qse/cmn/mbwc.h>
+#include <qse/cmn/str.h>
+
+#include <locale.h>
+#if defined(_WIN32)
+#	include <windows.h>
+#endif
+
+#include <string>
+#if defined(QSE_CHAR_IS_WCHAR)
+typedef std::wstring String;
+#else
+typedef std::string String;
+#endif
+
+typedef QSE::StdAwk StdAwk;
+typedef QSE::StdAwk::Run Run;
+typedef QSE::StdAwk::Value Value;
+
+class MyConsoleHandler: public StdAwk::Console::Handler
+{
+public:
+	// this class defines a console handler that can be
+	// registered into an awk object.
+
+	void setInput (const StdAwk::char_t* instr)
+	{
+		this->input = instr;
+		this->inptr = this->input.c_str();
+		this->inend = inptr + this->input.length();
+	}
+
+	const StdAwk::char_t* getOutput () { return this->output.c_str(); }
+
+protected:
+	String input; // console input buffer 
+	const StdAwk::char_t* inptr;
+	const StdAwk::char_t* inend;
+
+	String output; // console output buffer
+	
+	int open (StdAwk::Console& io) 
+	{ 
+		if (io.getMode() == StdAwk::Console::READ)
+		{
+			this->inptr = this->input.c_str();
+			this->inend = inptr + this->input.length();
+		}
+		else
+		{
+			this->output.clear ();
+		}
+
+		return 1; // return open-success
+	}
+
+	int close (StdAwk::Console& io) 
+	{ 
+		return 0; // return success
+	} 
+
+	int flush (StdAwk::Console& io) 
+	{
+		// there is nothing to flush since a string buffer
+		// is used for a console output. just return success.
+		return 0; 
+	} 
+	int next (StdAwk::Console& io) 
+	{ 
+		// this stripped-down awk doesn't honor the nextfile statement
+		// or the nextofile statement. just return failure.
+		return -1; 
+	} 
+
+	ssize_t read (StdAwk::Console& io, StdAwk::char_t* data, size_t size) 
+	{
+		if (this->inptr >= this->inend) return 0; // EOF
+		size_t x = qse_strxncpy (data, size, inptr, inend - inptr);
+		this->inptr += x;
+		return x;
+	}
+
+	ssize_t write (StdAwk::Console& io, const StdAwk::char_t* data, size_t size) 
+	{
+		try { this->output.append (data, size); }
+		catch (...) 
+		{ 
+			((StdAwk::Run*)io)->setError (QSE_AWK_ENOMEM);
+			return -1; 
+		}
+		return size;
+	}
+};
+
+static void print_error (
+	const StdAwk::loc_t& loc, const StdAwk::char_t* msg)
+{
+	if (loc.line > 0 || loc.colm > 0)
+		qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s at LINE %lu COLUMN %lu\n"), msg, loc.line, loc.colm);
+	else
+		qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s\n"), msg);
+	
+}
+
+static int run_awk (StdAwk& awk)
+{
+	// sample input string
+	const qse_char_t* instr = QSE_T(
+		"aardvark     555-5553     1200/300          B\n"
+		"alpo-net     555-3412     2400/1200/300     A\n"
+		"barfly       555-7685     1200/300          A\n"
+		"bites        555-1675     2400/1200/300     A\n"
+		"camelot      555-0542     300               C\n"
+		"core         555-2912     1200/300          C\n"
+		"fooey        555-1234     2400/1200/300     B\n"
+		"foot         555-6699     1200/300          B\n"
+		"macfoo       555-6480     1200/300          A\n"
+		"sdace        555-3430     2400/1200/300     A\n"
+		"sabafoo      555-2127     1200/300          C\n");
+
+	const qse_char_t* instr2 = QSE_T(
+		"aardvark     555-5553     1200/300          A\n"
+		"alpo-net     555-3412     2400/1200/300     B\n"
+		"barfly       555-7685     1200/300          C\n"
+		"bites        555-1675     2400/1200/300     A\n"
+		"camelot      555-0542     300               C\n"
+		"core         555-2912     1200/300          B\n"
+		"fooey        555-1234     2400/1200/300     A\n"
+		"foot         555-6699     1200/300          A\n"
+		"macfoo       555-6480     1200/300          B\n"
+		"sdace        555-3430     2400/1200/300     B\n"
+		"sabafoo      555-2127     1200/300          A\n");
+
+	// ARGV[0]
+	if (awk.addArgument (QSE_T("awk14")) <= -1) return -1;
+
+	// prepare a string to print lines with A in the fourth column
+	StdAwk::SourceString in (QSE_T("$4 == \"A\" { print $2, $1, $3; }")); 
+	
+	// parse the script.
+	if (awk.parse (in, StdAwk::Source::NONE) == QSE_NULL) return -1;
+	StdAwk::Value r;
+
+	MyConsoleHandler* mch = (MyConsoleHandler*)awk.getConsoleHandler();
+
+	mch->setInput (instr); // locate the input string
+	int x = awk.loop (&r); // execute the BEGIN, pattern-action, END blocks.
+
+	if (x >= 0)
+	{
+		qse_printf (QSE_T("%s"), mch->getOutput()); // print the console output
+		qse_printf (QSE_T("-----------------------------\n"));
+
+		mch->setInput (instr2);
+
+		// reset the runtime context so that the next loop() method
+		// is performed over a new console stream.
+		if (awk.resetRunContext() == QSE_NULL) return -1;
+
+		int x = awk.loop (&r);
+
+		if (x >= 0)
+		{
+			qse_printf (QSE_T("%s"), mch->getOutput());
+			qse_printf (QSE_T("-----------------------------\n"));
+		}
+	}
+
+	return x;
+}
+
+static int awk_main (int argc, qse_char_t* argv[])
+{
+	
+	MyConsoleHandler mch;
+	StdAwk awk;
+
+	int ret = awk.open ();
+	if (ret >= 0) 
+	{
+		awk.setConsoleHandler (&mch);
+		ret = run_awk (awk);
+	}
+
+	if (ret <= -1) 
+	{
+		StdAwk::loc_t loc = awk.getErrorLocation();
+		print_error (loc, awk.getErrorMessage());
+	}
+
+	awk.close ();
+	return ret;
+}
+
+int qse_main (int argc, qse_achar_t* argv[])
+{
+#if defined(_WIN32)
+	char locale[100];
+	UINT codepage = GetConsoleOutputCP();	
+	if (codepage == CP_UTF8)
+	{
+		/*SetConsoleOUtputCP (CP_UTF8);*/
+		qse_setdflcmgr (qse_utf8cmgr);
+	}
+	else
+	{
+		sprintf (locale, ".%u", (unsigned int)codepage);
+		setlocale (LC_ALL, locale);
+		qse_setdflcmgr (qse_slmbcmgr);
+	}
+#else
+	setlocale (LC_ALL, "");
+	qse_setdflcmgr (qse_slmbcmgr);
+#endif
+
+	return qse_runmain (argc,argv,awk_main);
+}