/*
 * archive.h -- enfle transparent archive file handler header
 * (C)Copyright 1998 by Hiroshi Takekawa
 * Last Modified: Mon Sep 20 20:03:04 1999.
 */

#ifndef _ARCHIVE_H
#define _ARCHIVE_H

typedef struct _archive Archive;

#include "dlist.h"
#include <stdio.h>

#define METHOD(type, name, args) type (*name)args
struct _archive {
  char *format;
  char *filename;
  char ifname[16]; /* stands for internal filename */
  FILE *fp;
  int nfiles;
  int asize; /* stands for archive filesize */
  int index;
  int offset;
  int size;
  /* unique plugin info */
  void *info;

  METHOD(int, select, (struct _archive *, int));
  METHOD(int, seek  , (struct _archive *, long, int));
  METHOD(int, tell  , (struct _archive *));
  METHOD(int, read  , (struct _archive *, unsigned char *, int));
  METHOD(int, close , (struct _archive *));
};

Archive *archive_open(Dlist *, char *);
Archive *archive_open_from_plugin(char *, char *);
int archive_seek(Archive *, long, int);
int archive_tell(Archive *);
int archive_read(Archive *, unsigned char *, int);
int archive_getc(Archive *);
unsigned char *archive_gets(Archive *, unsigned char *, int);
int archive_select(Archive *, int);
int archive_close(Archive *);

#endif