avr/cpp/collection/CppString.h

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/**********************************************************************************************************************\

        C++ library for Atmel AVR microcontrollers
        Copyright (C) 2007 Lauri Kirikal, Mikk Leini, MT� TT� Robotiklubi

        This program 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.

        This program 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 this program; if not, write to the Free Software
        Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

        See http://creativecommons.org/licenses/GPL/2.0/

        MT� TT� Robotiklubi  http://www.robotiklubi.ee robotiklubi@gmail.com
        Lauri Kirikal        laurikirikal@gmail.com
        Mikk Leini           mikk.leini@gmail.com

\**********************************************************************************************************************/

#ifndef __AVR_CPP_STRING_H__
#define __AVR_CPP_STRING_H__

#include "BaseString.h"

namespace AVRCpp
{
        namespace Collection
        {
                
                template <uint16_t capacity> class StaticString : public BaseString
                {
                private:
                        
                        bool EnsureCapacity(uint16_t required);
                        
                protected:
                        
                        char content[capacity];
                        
                public:
                        
                        StaticString<capacity>() : BaseString() {}
                        
                }; // class StaticString
                
                
                template <uint16_t blockSize = 1> class DynamicString : public BaseString
                {
                private:
                        
                        uint16_t GetBlockSize(uint16_t required);

                        bool EnsureCapacity(uint16_t required);
                        
                public:
                        
                        DynamicString<blockSize>() : BaseString() {}
                        ~DynamicString<blockSize>() { if (me) free(me); }
                        
                }; // class DynamicString
                
                template <> class DynamicString<1> : public BaseString
                {
                private:
                        
                        bool EnsureCapacity(uint16_t required);
                        
                public:
                        
                        DynamicString<1>() : BaseString() {}
                        ~DynamicString<1>() { if (me) free(me); }
                        
                }; // class StaticString SPECIALISATION
                
                
                typedef DynamicString<1> String;
                
                
                template <uint16_t blockSize> uint16_t DynamicString<blockSize>::GetBlockSize(uint16_t required)
                {
                        uint16_t k = required / blockSize + 1;
                        return k * blockSize;
                        
                } // GetBlockSize
                
                
                template <uint16_t blockSize> bool DynamicString<blockSize>::EnsureCapacity(uint16_t required)
                {
                        if (me)
                        {
                                if (size < required)
                                {
                                        required = GetBlockSize(required);
                                        me = StrRealloc(me, required);
                                }
                                else
                                        return true;
                        }
                        else
                        {
                                required = GetBlockSize(required);
                                me = StrAlloc(required);
                        }
                        
                        if (me)
                        {
                                size = required;
                                return true;
                        }
                        
                        size = 0;
                        length = 0;
                        return false;
                        
                } // EnsureCapasity


                template <uint16_t capacity> bool StaticString<capacity>::EnsureCapacity(uint16_t required)
                {
                        if (required > capacity)
                                return false;
                        
                        me = content;
                        
                        return true;
                        
                } // EnsureCapasity
                
        } // namespace Collection
        
} // namespace AVRCpp

#endif // ifndef __AVR_CPP_STRING_H__

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MTÜ TTÜ Robotiklubi