Markus Armbruster
12b1427693
the next user can't use the cache, it gets automatically zapped then. Remove.
150 lines
4.5 KiB
C
150 lines
4.5 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2005, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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* This program 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ---
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*
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* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
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* related information and legal notices. It is expected that any future
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* projects/authors will amend these files as needed.
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*
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* ---
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*
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* file.h: Describes Empire files and their contents
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*
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* Known contributors to this file:
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*
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*/
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#ifndef _FILE_H_
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#define _FILE_H_
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#include <stddef.h>
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struct empfile {
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int ef_uid; /* Table ID */
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char *name; /* Empire name (e.g., "treaty") */
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char *file; /* file name (relative to data directory) */
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int flags; /* misc stuff */
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int size; /* size of object */
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void (*init) (int, char *); /* call this when object is created */
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int (*postread) (int, char *); /* specific massage routines for items */
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int (*prewrite) (int, char *);
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int fd; /* file descriptor, -1 if not open */
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int baseid; /* starting item in cache */
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int cids; /* # ids in cache */
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int csize; /* size of cache in bytes */
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char *cache; /* pointer to cache */
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int fids; /* # of ids in file */
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struct castr *cadef; /* ca defs selection list */
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};
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/*
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* struct empfile flags
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*
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* EFF_XY / EFF_OWNER / EFF_GROUP assert that coordinates / owner /
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* group of such a file's record can be safely obtained by
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* dereferencing its memory address cast to struct genitem *.
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*/
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#define EFF_XY bit(0)
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#define EFF_OWNER bit(1)
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#define EFF_GROUP bit(2)
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/* Table is entirely in memory */
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#define EFF_MEM bit(3)
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/* Table is read-only */
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#define EFF_RDONLY bit(4)
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/* Create table file, clobbering any existing file */
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#define EFF_CREATE bit(5)
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/* Table is allocated statically */
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/* Flags that may be passed to ef_open() */
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#define EFF_OPEN (EFF_MEM | EFF_RDONLY | EFF_CREATE)
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/*
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* Empire `file types'
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* These are really table IDs. Some tables are backed by files, some
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* are compiled into the server.
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* Historically, only table IDs 0..EF_MAX-1 existed. All the
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* functions operating on table IDs still reject the new indexes >=
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* EF_MAX. This needs to be rectified, carefully checking existing
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* code, which could rely on unspoken assumptions about these tables.
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*/
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/* Error value */
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#define EF_BAD -1
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/* Dynamic game data tables: 0..EF_MAX-1 */
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#define EF_SECTOR 0
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#define EF_SHIP 1
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#define EF_PLANE 2
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#define EF_LAND 3
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#define EF_NUKE 4
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#define EF_NEWS 5
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#define EF_TREATY 6
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#define EF_TRADE 7
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#define EF_POWER 8
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#define EF_NATION 9
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#define EF_LOAN 10
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#define EF_MAP 11
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#define EF_BMAP 12
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#define EF_COMM 13
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#define EF_LOST 14
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#define EF_MAX 15
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/* Static game data (configuation): EF_MAX.. */
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#define EF_SECTOR_CHR 15
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#define EF_SHIP_CHR 16
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#define EF_PLANE_CHR 17
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#define EF_LAND_CHR 18
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#define EF_NUKE_CHR 19
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#if 0 /* doesn't exist yet */
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#define EF_NEWS_CHR
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#endif
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#define EF_TREATY_CHR 20
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#define EF_ITEM 21
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#define EF_INFRASTRUCTURE 22
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#define EF_PRODUCT 23
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#define EF_TABLE 24
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#define EF_SHIP_CHR_FLAGS 25
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#define EF_PLANE_CHR_FLAGS 26
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#define EF_LAND_CHR_FLAGS 27
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#define EF_NUKE_CHR_FLAGS 28
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struct fileinit {
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int ef_type;
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void (*init) (int, char *);
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int (*postread) (int, char *);
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int (*prewrite) (int, char *);
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};
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extern struct castr *ef_cadef(int);
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extern int ef_read(int, int, void *);
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extern void *ef_ptr(int, int);
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extern char *ef_nameof(int);
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extern time_t ef_mtime(int);
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extern int ef_open(int, int);
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extern int ef_check(int);
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extern int ef_close(int);
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extern int ef_flush(int);
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extern int ef_write(int, int, void *);
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extern int ef_extend(int, int);
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extern int ef_ensure_space(int, int, int);
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extern int ef_nelem(int);
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extern int ef_flags(int);
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extern int ef_byname(char *);
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extern struct empfile empfile[];
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#endif /* _FILE_H_ */
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