/*
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* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
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*
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*/
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/* $Id: symbol.h,v 1.1 2000/09/21 21:35:06 alaffin Exp $ */
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#ifndef _SYMBOL_H_
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#define _SYMBOL_H_
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/*
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* "Generic" Symbol Table
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*
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* These data structures are the internal part of a library providing
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* an in-memory dbm-like (key, content) database with hierarchical
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* key names.
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*/
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struct sym {
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struct sym *next;
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char *key;
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void *data;
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};
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/*
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* Symbol Table Header
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*/
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struct symh {
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int magic;
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struct sym *sym;
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struct sym *cursor;
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};
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/*
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* The "SYM" typedef is the only external data type.
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*/
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typedef struct symh *SYM;
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/*
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* Data for keys and contents (lifted from dbopen(3))
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* dbopen(3) uses this for all functions, but I'm hard-wired into chars
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* for keys and the like; I just need this for sym_get
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*/
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typedef struct {
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void *data;
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int size;
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} DBT;
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/*
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* Prototypes
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*/
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SYM sym_open(int flags, int mode, int openinfo );
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int sym_put (SYM sym, char *key, void *data, int flags );
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void *sym_get (SYM sym, char *key );
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int sym_seq (SYM sym, DBT *key, DBT *data, int flags );
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int sym_rm (SYM sym, int flags );
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/*
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* Flags for sym_put
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*/
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#define PUT_REPLACE 1 /* replace data on a put */
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/*
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* Flags for sym_rm
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*/
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#define RM_KEY 001 /* free() on key pointer */
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#define RM_DATA 002 /* free() on data pointer */
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/*
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* Flags for sym_seq (clones of 44BSD dbopen(3))
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*/
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#define R_CURSOR 1 /* set "cursor" to where "data" key is */
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#define R_FIRST 2 /* set "cursor" to first item */
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#define R_NEXT 4 /* set "cursor" to next item */
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#define R_LAST 3 /* set "cursor" to last item (UNIMP) */
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#define R_PREV 5 /* set "cursor" to previous item (UNIMP) */
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#endif
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