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/*
* alk.c ALK archive manager
*
* Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
* 1998- <masaki-c@is.aist-nara.ac.jp>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @version 1.0 01/11/29 initial version
*/
/* $Id: alk.c,v 1.2 2003/01/12 10:48:50 chikama Exp $ */
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "portab.h"
#include "system.h"
#include "LittleEndian.h"
#include "alk.h"
alk_t *alk_new(const char *path) {
mmap_t *m = map_file(path);
if (0 != strncmp(m->addr, "ALK0", 4)) {
WARNING("%s: not an ALK file", path);
unmap_file(m);
return NULL;
}
int nr_entries = LittleEndian_getDW(m->addr, 4);
alk_t *alk = malloc(sizeof(alk_t) + sizeof(struct alk_entry) * nr_entries);
alk->mmap = m;
alk->datanum = nr_entries;
for (int i = 0; i < nr_entries; i++) {
alk->entries[i].data = (uint8_t *)m->addr + LittleEndian_getDW(m->addr, 8 + i * 8);
alk->entries[i].size = LittleEndian_getDW(m->addr, 8 + i * 8 + 4);
}
return alk;
}
void alk_free(alk_t *alk) {
unmap_file(alk->mmap);
free(alk);
}
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