2 files changed, 58 insertions, 2 deletions

diff --git a/libodbcpp/column.cpp b/libodbcpp/column.cpp
index 386cbfd..c94c25d 100644
--- a/libodbcpp/column.cpp
+++ b/libodbcpp/column.cpp
@@ -91,6 +91,18 @@ namespace ODBC {
 		return writeToBuf(buf, "%g");
 	}
 	template <>
+	Glib::ustring
+	_Column<SQLDOUBLE>::compose() const
+	{
+		return Glib::ustring::compose("%1", value);
+	}
+	template <>
+	Glib::ustring
+	_Column<SQLDOUBLE>::compose(const Glib::ustring & fmt) const
+	{
+		return Glib::ustring::compose(fmt, value);
+	}
+	template <>
 	int
 	_Column<SQLINTEGER>::writeToBuf(char ** buf, const char * fmt) const
 	{
@@ -103,6 +115,18 @@ namespace ODBC {
 		return writeToBuf(buf, "%ld");
 	}
 	template <>
+	Glib::ustring
+	_Column<SQLINTEGER>::compose() const
+	{
+		return Glib::ustring::compose("%1", value);
+	}
+	template <>
+	Glib::ustring
+	_Column<SQLINTEGER>::compose(const Glib::ustring & fmt) const
+	{
+		return Glib::ustring::compose(fmt, value);
+	}
+	template <>
 	int
 	_Column<SQLCHAR*>::writeToBuf(char ** buf, const char * fmt) const
 	{
@@ -115,13 +139,25 @@ namespace ODBC {
 		return writeToBuf(buf, "%s");
 	}
 	template <>
+	Glib::ustring
+	_Column<SQLCHAR*>::compose() const
+	{
+		return Glib::ustring::compose("%1", value);
+	}
+	template <>
+	Glib::ustring
+	_Column<SQLCHAR*>::compose(const Glib::ustring & fmt) const
+	{
+		return Glib::ustring::compose(fmt, value);
+	}
+	template <>
 	int
 	_Column<SQL_TIMESTAMP_STRUCT>::writeToBuf(char ** buf, const char * fmt) const
 	{
-		*buf = (char *)malloc(30);
+		*buf = (char *)malloc(300);
 		struct tm t;
 		t << value;
-		return strftime(*buf, 30, fmt, &t);
+		return strftime(*buf, sizeof(*buf), fmt, &t);
 	}
 	template <>
 	int
@@ -129,6 +165,22 @@ namespace ODBC {
 	{
 		return writeToBuf(buf, "%F %T");
 	}
+	template <>
+	Glib::ustring
+	_Column<SQL_TIMESTAMP_STRUCT>::compose(const Glib::ustring & fmt) const
+	{
+		char buf[300];
+		struct tm t;
+		t << value;
+		int len = strftime(buf, sizeof(buf), fmt.c_str(), &t);
+		return Glib::ustring(buf, len);
+	}
+	template <>
+	Glib::ustring
+	_Column<SQL_TIMESTAMP_STRUCT>::compose() const
+	{
+		return compose("%F %T");
+	}
 }
 
 void operator << (SQL_TIMESTAMP_STRUCT & target, const struct tm & src)
diff --git a/libodbcpp/column.h b/libodbcpp/column.h
index 9f3b93d..3b3370f 100644
--- a/libodbcpp/column.h
+++ b/libodbcpp/column.h
@@ -22,6 +22,8 @@ namespace ODBC {
 			operator Glib::ustring () const;
 			operator struct tm () const;
 			virtual void rebind(Command *, unsigned int col) const = 0;
+			virtual Glib::ustring compose() const = 0;
+			virtual Glib::ustring compose(const Glib::ustring & fmt) const = 0;
 			virtual int writeToBuf(char ** buf) const = 0;
 			virtual int writeToBuf(char ** buf, const char * fmt) const = 0;
 			bool isNull() const;
@@ -38,6 +40,8 @@ namespace ODBC {
 			_Column(const Glib::ustring &, unsigned int);
 			~_Column() {}
 			void			rebind(Command *, unsigned int col) const;
+			Glib::ustring	compose() const;
+			Glib::ustring	compose(const Glib::ustring & fmt) const;
 			int				writeToBuf(char ** buf) const;
 			int				writeToBuf(char ** buf, const char * fmt) const;
 	};