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/*
* history.c
*
* Copyright (C) 2012 James Booth <boothj5@gmail.com>
*
* This file is part of Profanity.
*
* Profanity 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 3 of the License, or
* (at your option) any later version.
*
* Profanity 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 Profanity. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdlib.h>
#include <string.h>
#define MAX_HISTORY 100
static char *_history[MAX_HISTORY];
static int _size;
static int _pos;
void history_init(void)
{
int i;
for (i = 0; i < _size; i++)
free(_history[i]);
_size = 0;
_pos = -1;
}
// FIXME: Roll history when full
void history_append(const char * const inp)
{
if (_size < MAX_HISTORY) {
_history[_size] = (char*) malloc((strlen(inp) + 1) * sizeof(char));
strcpy(_history[_size], inp);
_pos = _size;
_size++;
}
}
char *history_previous(void)
{
if (_size == 0 || _pos == -1)
return NULL;
return _history[_pos--];
}
char *history_next(void)
{
if (_size == 0)
return NULL;
if (_pos == (_size - 1))
return NULL;
if (_pos + 2 >= _size)
return NULL;
int pos = _pos + 2;
_pos++;
return _history[pos];
}
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