74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/*
|
|
* 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; version 2 of the License.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef __ARCHIVE_H
|
|
#define __ARCHIVE_H
|
|
|
|
#include <stdint.h>
|
|
|
|
/*
|
|
* Archive file layout:
|
|
*
|
|
* +----------------------------------+
|
|
* | root header |
|
|
* +----------------------------------+
|
|
* | file_header[0] |
|
|
* +----------------------------------+
|
|
* | file_header[1] |
|
|
* +----------------------------------+
|
|
* | ... |
|
|
* +----------------------------------+
|
|
* | file_header[count-1] |
|
|
* +----------------------------------+
|
|
* | file(0) content |
|
|
* +----------------------------------+
|
|
* | file(1) content |
|
|
* +----------------------------------+
|
|
* | ... |
|
|
* +----------------------------------+
|
|
* | file(count-1) content |
|
|
* +----------------------------------+
|
|
*/
|
|
|
|
#define VERSION 0
|
|
#define CBAR_MAGIC "CBAR"
|
|
#define NAME_LENGTH 32
|
|
|
|
/* Root header */
|
|
struct directory {
|
|
char magic[4];
|
|
uint32_t version; /* version of the header. little endian */
|
|
uint32_t size; /* total size of archive. little endian */
|
|
uint32_t count; /* number of files. little endian */
|
|
};
|
|
|
|
/* File header */
|
|
struct dentry {
|
|
/* file name. null-terminated if shorter than NAME_LENGTH */
|
|
char name[NAME_LENGTH];
|
|
/* file offset from the root header. little endian */
|
|
uint32_t offset;
|
|
/* file size. little endian */
|
|
uint32_t size;
|
|
};
|
|
|
|
static inline struct dentry *get_first_dentry(const struct directory *dir)
|
|
{
|
|
return (struct dentry *)(dir + 1);
|
|
}
|
|
|
|
static inline uint32_t get_first_offset(const struct directory *dir)
|
|
{
|
|
return sizeof(struct directory) + sizeof(struct dentry) * dir->count;
|
|
}
|
|
|
|
#endif
|