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/*
Facebook plugin for Miranda Instant Messenger
_____________________________________________
Copyright © 2009-11 Michal Zelinka, 2011-17 Robert Pösel
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, see <http://www.gnu.org/licenses/>.
*/
#pragma once
namespace List
{
template< typename T > class Item
{
public:
std::string key;
T* data;
Item< T >* prev;
Item< T >* next;
Item()
{
this->data = NULL;
this->prev = NULL;
this->next = NULL;
}
~Item()
{
delete this->data;
}
};
template< typename T > class List
{
private:
Item< T >* first;
Item< T >* last;
unsigned int count;
public:
List()
{
this->first = this->last = NULL;
this->count = 0;
}
~List()
{
this->clear();
}
Item< T >* begin()
{
return first;
}
Item< T >* end()
{
return last;
}
unsigned int size()
{
return count;
}
bool empty()
{
return (this->first == NULL);
}
void insert(Item< T >* item)
{
if (this->empty())
{
this->first = this->last = item;
this->count = 1;
} else { // TODO: key sorting/comparation
item->next = this->first;
this->first->prev = item;
this->first = item;
this->count++;
}
}
void insert(std::pair< std::string, T* > item)
{
Item<T>* ins = new Item<T>;
ins->key = item.first;
ins->data = item.second;
this->insert(ins);
}
void erase(std::string key)
{
Item< T >* help = this->first;
while (help != NULL)
{
if (help->key.compare(key) != 0)
help = help->next;
else
{
if (help == this->first)
{
this->first = help->next;
if (this->first != NULL)
this->first->prev = NULL;
else
this->last = NULL;
}
else if (help == this->last)
{
this->last = help->prev;
if (this->last != NULL)
this->last->next = NULL;
else
this->first = NULL;
}
else
{
help->prev->next = help->next;
help->next->prev = help->prev;
}
this->count--;
delete help;
break;
}
}
}
void erase(Item< T >* item)
{
if (item != NULL)
erase(item->key);
}
T* find(std::string key)
{
Item< T >* help = this->begin();
while (help != NULL)
{
if (help->key.compare(key) != 0)
help = help->next;
else
return help->data;
}
return NULL;
}
T* at(const unsigned int item)
{
if (item >= this->count)
return NULL;
Item< T >* help = this->begin();
for (unsigned int i = 0; i < item; i++)
help = help->next;
return help->item;
}
T* operator[](const unsigned int item)
{
return at(item);
}
void clear()
{
Item< T >* help;
while (this->first != NULL)
{
help = this->first;
this->first = this->first->next;
delete help;
}
this->last = NULL;
this->count = 0;
}
};
};
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