/* $FreeBSD$ */
/* $NetBSD: citrus_iconv_local.h,v 1.3 2008/02/09 14:56:20 junyoung Exp $ */

/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c)2003 Citrus Project,
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS 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 AUTHOR OR 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.
 */

#ifndef _CITRUS_ICONV_LOCAL_H_
#define _CITRUS_ICONV_LOCAL_H_

#include <iconv.h>
#include <stdbool.h>

#define _CITRUS_ICONV_GETOPS_FUNC_BASE(_n_)				\
    int _n_(struct _citrus_iconv_ops *)
#define _CITRUS_ICONV_GETOPS_FUNC(_n_)					\
    _CITRUS_ICONV_GETOPS_FUNC_BASE(_citrus_##_n_##_iconv_getops)

#define _CITRUS_ICONV_DECLS(_m_)					\
static int	 _citrus_##_m_##_iconv_init_shared			\
		    (struct _citrus_iconv_shared * __restrict,		\
	 	    const char * __restrict, const char * __restrict);	\
static void	 _citrus_##_m_##_iconv_uninit_shared			\
		    (struct _citrus_iconv_shared *);			\
static int	 _citrus_##_m_##_iconv_convert				\
		    (struct _citrus_iconv * __restrict,			\
		    char * __restrict * __restrict,			\
		    size_t * __restrict,				\
		    char * __restrict * __restrict,			\
		    size_t * __restrict outbytes,			\
	 	    uint32_t, size_t * __restrict);			\
static int	 _citrus_##_m_##_iconv_init_context			\
		    (struct _citrus_iconv *);				\
static void	 _citrus_##_m_##_iconv_uninit_context			\
		    (struct _citrus_iconv *)


#define _CITRUS_ICONV_DEF_OPS(_m_)					\
extern struct _citrus_iconv_ops _citrus_##_m_##_iconv_ops;		\
struct _citrus_iconv_ops _citrus_##_m_##_iconv_ops = {			\
	/* io_init_shared */	&_citrus_##_m_##_iconv_init_shared,	\
	/* io_uninit_shared */	&_citrus_##_m_##_iconv_uninit_shared,	\
	/* io_init_context */	&_citrus_##_m_##_iconv_init_context,	\
	/* io_uninit_context */	&_citrus_##_m_##_iconv_uninit_context,	\
	/* io_convert */	&_citrus_##_m_##_iconv_convert		\
}

typedef _CITRUS_ICONV_GETOPS_FUNC_BASE((*_citrus_iconv_getops_t));
typedef	int (*_citrus_iconv_init_shared_t)
    (struct _citrus_iconv_shared * __restrict,
    const char * __restrict, const char * __restrict);
typedef void (*_citrus_iconv_uninit_shared_t)
    (struct _citrus_iconv_shared *);
typedef int (*_citrus_iconv_convert_t)
    (struct _citrus_iconv * __restrict,
    char *__restrict* __restrict, size_t * __restrict,
    char * __restrict * __restrict, size_t * __restrict, uint32_t,
    size_t * __restrict);
typedef int (*_citrus_iconv_init_context_t)(struct _citrus_iconv *);
typedef void (*_citrus_iconv_uninit_context_t)(struct _citrus_iconv *);

struct _citrus_iconv_ops {
	_citrus_iconv_init_shared_t	io_init_shared;
	_citrus_iconv_uninit_shared_t	io_uninit_shared;
	_citrus_iconv_init_context_t	io_init_context;
	_citrus_iconv_uninit_context_t	io_uninit_context;
	_citrus_iconv_convert_t		io_convert;
};

struct _citrus_iconv_shared {
	struct _citrus_iconv_ops			*ci_ops;
	void						*ci_closure;
	_CITRUS_HASH_ENTRY(_citrus_iconv_shared)	 ci_hash_entry;
	TAILQ_ENTRY(_citrus_iconv_shared)		 ci_tailq_entry;
	_citrus_module_t				 ci_module;
	unsigned int					 ci_used_count;
	char						*ci_convname;
	bool						 ci_discard_ilseq;
	struct iconv_hooks				*ci_hooks;
	bool						 ci_ilseq_invalid;
};

struct _citrus_iconv {
	struct _citrus_iconv_shared			*cv_shared;
	void						*cv_closure;
};

#endif