forked from github/server
96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/* vi: set ts=2:
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*
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*
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* Eressea PB(E)M host Copyright (C) 1998-2003
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* Christian Schlittchen (corwin@amber.kn-bremen.de)
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* Katja Zedel (katze@felidae.kn-bremen.de)
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* Henning Peters (faroul@beyond.kn-bremen.de)
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* Enno Rehling (enno@eressea-pbem.de)
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* Ingo Wilken (Ingo.Wilken@informatik.uni-oldenburg.de)
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*
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* This program may not be used, modified or distributed without
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* prior permission by the authors of Eressea.
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*/
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#ifndef ATTRIB_H
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#define ATTRIB_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdio.h>
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typedef void (*afun)(void);
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typedef struct attrib {
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const struct attrib_type * type;
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union {
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afun f;
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void * v;
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int i;
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float flt;
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char c;
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short s;
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short sa[2];
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char ca[4];
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} data;
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/* internal data, do not modify: */
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struct attrib * next; /* next attribute in the list */
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struct attrib * nexttype; /* next attribute of same type */
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} attrib;
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#define ATF_UNIQUE (1<<0) /* only one per attribute-list */
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#define ATF_PRESERVE (1<<1) /* preserve order in list. append to back */
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#define ATF_USER_DEFINED (1<<2) /* use this to make udf */
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typedef struct attrib_type {
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const char* name;
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void (*initialize)(struct attrib *);
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void (*finalize)(struct attrib *);
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int (*age)(struct attrib *);
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/* age returns 0 if the attribute needs to be removed, !=0 otherwise */
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void (*write)(const struct attrib *, FILE*);
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int (*read)(struct attrib *, FILE*); /* return AT_READ_OK on success, AT_READ_FAIL if attrib needs removal */
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unsigned int flags;
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/* ---- internal data, do not modify: ---- */
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struct attrib_type * nexthash;
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unsigned int hashkey;
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} attrib_type;
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extern int a_readdefault(attrib * a, FILE * f);
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extern void a_writedefault(const attrib * a, FILE * f);
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extern int a_readstring(attrib * a, FILE * f);
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extern void a_writestring(const attrib * a, FILE * f);
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extern void a_finalizestring(attrib * a);
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extern void at_register(attrib_type * at);
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extern attrib * a_select(attrib * a, const void * data, boolean(*compare)(const attrib *, const void *));
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extern attrib * a_find(attrib * a, const attrib_type * at);
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extern const attrib * a_findc(const attrib * a, const attrib_type * at);
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extern attrib * a_add(attrib ** pa, attrib * at);
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extern int a_remove(attrib ** pa, attrib * at);
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extern void a_removeall(attrib ** a, const attrib_type * at);
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extern attrib * a_new(const attrib_type * at);
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extern void a_free(attrib * a);
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extern int a_age(attrib ** attribs);
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extern void a_read(FILE * f, attrib ** attribs);
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extern void a_write(FILE * f, const attrib * attribs);
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#define DEFAULT_AGE NULL
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#define DEFAULT_INIT NULL
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#define DEFAULT_FINALIZE NULL
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#define DEFAULT_WRITE a_writedefault
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#define DEFAULT_READ a_readdefault
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#define NO_WRITE NULL
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#define NO_READ NULL
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#define AT_READ_OK 4711
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#define AT_READ_FAIL -4711
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#ifdef __cplusplus
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}
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#endif
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#endif
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