/* $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