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https://github.com/profanity-im/profanity.git
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70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
/*
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* history.c
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*
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* Copyright (C) 2012 James Booth <boothj5@gmail.com>
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*
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* This file is part of Profanity.
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*
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* Profanity is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Profanity is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Profanity. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <string.h>
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#define MAX_HISTORY 100
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static char *_history[MAX_HISTORY];
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static int _size;
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static int _pos;
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void history_init(void)
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{
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_size = 0;
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_pos = -1;
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}
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void history_append(char *inp)
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{
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if (_size < MAX_HISTORY) {
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_history[_size] = (char*) malloc(strlen(inp) * sizeof(char));
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strcpy(_history[_size], inp);
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_pos = _size;
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_size++;
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}
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}
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char *history_previous(void)
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{
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if (_size == 0 || _pos == -1)
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return NULL;
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return _history[_pos--];
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}
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char *history_next(void)
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{
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if (_size == 0)
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return NULL;
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if (_pos == (_size - 1))
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return NULL;
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if (_pos + 2 >= _size)
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return NULL;
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int pos = _pos + 2;
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_pos++;
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return _history[pos];
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}
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