added: TextStream a class similar to std::ostringstream

but with a Clear() method
       the dynamic allocated buffer can be easily reused
added: DbTextStream a special version of a stream
       used to create a database string query
       everything is escaped by default
added: DbBase a base class with some basic methods for communicating
       with the database
added: DbConn a class for managing connection to the database
changed: some refactoring in Db class       



git-svn-id: svn://ttmath.org/publicrep/winix/trunk@655 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/textstream.h

@@ -0,0 +1,47 @@
+/*
+ * This file is a part of Winix
+ * and is not publicly distributed
+ * 
+ * Copyright (c) 2010, Tomasz Sowa
+ * All rights reserved.
+ * 
+ */
+ 
+#ifndef headerfile_winix_core_textstream
+#define headerfile_winix_core_textstream
+
+#include <string>
+
+
+
+class TextStream
+{
+public:
+
+	void Clear();
+	const std::string & Str() const;
+	const char * CStr() const;
+
+	TextStream & operator<<(const char * str);
+	TextStream & operator<<(const std::string * str);
+	TextStream & operator<<(const std::string & str);
+
+	TextStream & operator<<(char);
+	TextStream & operator<<(int);
+	TextStream & operator<<(long);
+	TextStream & operator<<(unsigned int);
+	TextStream & operator<<(unsigned long);
+	TextStream & operator<<(double);
+	TextStream & operator<<(const void *);// printing a pointer
+
+protected:
+
+	std::string buffer;
+
+};
+
+
+
+
+#endif
+