- added console interpreter

- added string_utils

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@342 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/backend/Makefile.am

@@ -57,7 +57,8 @@ libbackend_la_SOURCES = \
 		schedulable_list.cc \
 		schedulable_status.cc \
 		scheduler.cc \
-		slice.cc
+		slice.cc \
+		string_utils.cc
 
 noinst_HEADERS = \
 		history.hh \
@@ -70,4 +71,5 @@ noinst_HEADERS = \
 		schedulable_list.hh \
 		schedulable_status.hh \
 		scheduler.hh \
-		slice.hh
+		slice.hh \
+		string_utils.hh

src/backend/policy.hh

@@ -30,35 +30,36 @@
 
 namespace sgpem
 {
-    class Policy;
+
+	class Policy;
 	
-    /**	\brief 
-	e' una Strategy che rappresenta un algoritmo di scheduling che implementa una politica
-	di scheduling.
-    */			   
-    class SG_DLLEXPORT Policy 
-    {
-    public:
-	virtual ~Policy();
+  /**	\brief 
+		e' una Strategy che rappresenta un algoritmo di scheduling che implementa una politica
+  		di scheduling.
+  */			   
+	class SG_DLLEXPORT Policy 
+	{
+	public:
+		virtual ~Policy();
 				
-	virtual void	configure() = 0;
-	virtual void    sort_queue(sgpem::Scheduler::event) const = 0;
-	int 	        get_id() const;
-	virtual Glib::ustring 	get_description() const = 0;
-	virtual bool    is_pre_emptive() const = 0;
-	virtual int     get_time_slice() const = 0;
-	virtual void    set_time_slice(const int&) = 0;
+		virtual void			configure() = 0;
+		virtual void 			sort_queue(sgpem::Scheduler::event) const = 0;
+		int 					get_id() const;
+		virtual Glib::ustring 	get_description() const = 0;
+		virtual bool 			is_pre_emptive() const = 0;
+		virtual int				get_time_slice() const = 0;
+		virtual void 			set_time_slice(const int&) = 0;
 		
-	const PolicyParameters& get_parameters() const;
+		const PolicyParameters& get_parameters() const;
 		
 		
-    private:
-	PolicyParameters 	_parameters;
-	int			_id;
-    };
+	private:
+		PolicyParameters 	_parameters;
+		int					_id;
+	};
 	
 }//~ namespace sgpem
 
 
 
-#endif
+#endif

src/backend/string_utils.cc

@@ -0,0 +1,96 @@
+// src/backend/string_utils.cc - Copyright 2005, 2006, University
+//               of Padova, dept. of Pure and Applied
+//               Mathematics
+//
+// This file is part of SGPEMv2.
+//
+// This is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// SGPEMv2 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with SGPEMv2; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+#include "string_utils.hh"
+
+using Glib::ustring;
+
+/**
+	\brief A function that converts a Unicode string to an integer value
+			   
+	The string can contain ONLY digits and the "minus" character.
+
+	\returns TRUE if the string is well formatted
+	\returns FALSE otherwise	
+*/
+bool 
+string_to_int(const ustring& str, int& num)
+{
+	static const ustring allvalid = "0123456789-";
+	static const ustring digits = "0123456789";
+	
+	//	the string can't be empty
+	if (str.length() == 0 || (str.length() == 1 && str[0] == '-'))
+		return false;
+
+	//checks if the string contains only digits
+	if (str.find_first_not_of(allvalid) < str.length())
+		return false;
+	if (str.substr(1).find_first_not_of(digits) < str.length()-1)
+		return false;
+	
+	num=0;
+	int multiplier = 1, val;
+	int start;	//the position of the biggest digit
+	if (str[0] == '-')
+		start = 1;
+	else
+		start = 0;
+	for (int pos = str.length() - 1; pos >= start ; pos--)
+	{
+		val = str[pos] - 48;	//the INTEGER value of the digit
+		num += val*multiplier;
+		multiplier *= 10;		
+	}
+	//if there is the minus then multiply for -1
+	if (start == 1)
+		num *= -1;
+	return true;	
+}
+
+/**
+	\brief A function that converts an integer value to an Unicode string
+ */
+void
+int_to_string(const int& num, ustring& str)
+{
+	if (num == 0)
+	{
+		str = '0';
+		return;
+	}
+	
+	str = "";
+	int val = num;
+	bool negative = (val < 0)? true : false;
+	if (negative) val *= -1;
+	
+	while (true)
+	{
+		str = char(val % 10 + 48) + str;
+		if (val > 1 && val / 10 != 0)
+			val /= 10;
+		else
+			break;
+	}
+	if (negative)
+		str = '-' + str;
+}
+

src/backend/string_utils.hh

@@ -0,0 +1,33 @@
+// src/backend/string_utils.hh - Copyright 2005, 2006, University
+//               of Padova, dept. of Pure and Applied
+//               Mathematics
+//
+// This file is part of SGPEMv2.
+//
+// This is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// SGPEMv2 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with SGPEMv2; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+#ifndef STRING_UTILS_HH
+#define STRING_UTILS_HH 1
+
+#include "config.h"
+#include "glibmm/ustring.h"
+
+
+	bool SG_DLLEXPORT string_to_int(const Glib::ustring&, int&);
+	
+	void SG_DLLEXPORT int_to_string(const int&, Glib::ustring&);
+
+
+#endif