ossp-pkg/val/val.h
1.10
/*
** OSSP val - Value Access
** Copyright (c) 2002-2005 Ralf S. Engelschall <rse@engelschall.com>
** Copyright (c) 2002-2005 The OSSP Project <http://www.ossp.org/>
** Copyright (c) 2002-2005 Cable & Wireless <http://www.cw.com/>
**
** This file is part of OSSP val, a value access library which
** can be found at http://www.ossp.org/pkg/lib/val/.
**
** Permission to use, copy, modify, and distribute this software for
** any purpose with or without fee is hereby granted, provided that
** the above copyright notice and this permission notice appear in all
** copies.
**
** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
** SUCH DAMAGE.
**
** val.h: library API
*/
#ifndef __VAL_H__
#define __VAL_H__
#include <stdarg.h>
/* maximum length of a structured value name */
#define VAL_MAXNAME 1024
/* the set of distinct value types */
enum {
VAL_TYPE_VAL = 1<<0,
VAL_TYPE_PTR = 1<<1,
VAL_TYPE_CHAR = 1<<2,
VAL_TYPE_SHORT = 1<<3,
VAL_TYPE_INT = 1<<4,
VAL_TYPE_LONG = 1<<5,
VAL_TYPE_FLOAT = 1<<6,
VAL_TYPE_DOUBLE = 1<<7
};
/* the set of return codes */
typedef enum {
VAL_OK, /* everything ok */
VAL_ERR_ARG, /* error: invalid argument */
VAL_ERR_USE, /* error: invalid use */
VAL_ERR_MEM, /* error: no more memory */
VAL_ERR_HSH, /* error: hash table problem */
VAL_ERR_INT, /* error: internal error */
VAL_ERR_SYS /* error: system error (see errno) */
} val_rc_t;
/* the opaque data structure and type */
struct val_s;
typedef struct val_s val_t;
/* function type for use with val_apply() */
typedef val_rc_t (*val_cb_t)(void *, const char *, int, const char *, void *);
/* unique library identifier */
extern const char val_id[];
/* set of API functions */
val_rc_t val_create (val_t **);
val_rc_t val_destroy (val_t *);
val_rc_t val_reg (val_t *, const char *, int, const char *, void *);
val_rc_t val_unreg (val_t *, const char *);
val_rc_t val_query (val_t *, const char *, int *, char **, void **);
val_rc_t val_set (val_t *, const char *, ...);
val_rc_t val_get (val_t *, const char *, ...);
val_rc_t val_vset (val_t *, const char *, va_list);
val_rc_t val_vget (val_t *, const char *, va_list);
val_rc_t val_apply (val_t *, const char *, int, val_cb_t, void *);
#endif /* __VAL_H__ */
