src/cx/common.h

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2021 Mike Becker, Olaf Wintermann 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
 */

/**
 * \file common.h
 *
 * \brief Common definitions and feature checks.
 *
 * \author Mike Becker
 * \author Olaf Wintermann
 * \version 3.0
 * \copyright 2-Clause BSD License
 *
 * \mainpage UAP Common Extensions
 * Library with common and useful functions, macros and data structures.
 * <p>
 * Latest available source:<br>
 * <a href="https://sourceforge.net/projects/ucx/files/">https://sourceforge.net/projects/ucx/files/</a>
 * </p>
 *
 * <p>
 * Repositories:<br>
 * <a href="https://sourceforge.net/p/ucx/code">https://sourceforge.net/p/ucx/code</a>
 * -&nbsp;or&nbsp;-
 * <a href="https://develop.uap-core.de/hg/ucx">https://develop.uap-core.de/hg/ucx</a>
 * </p>
 *
 * <h2>LICENCE</h2>
 *
 * Copyright 2021 Mike Becker, Olaf Wintermann 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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 UCX_COMMON_H
#define UCX_COMMON_H

/** Major UCX version as integer constant. */
#define UCX_VERSION_MAJOR   3

/** Minor UCX version as integer constant. */
#define UCX_VERSION_MINOR   0

/** Version constant which ensures to increase monotonically. */
#define UCX_VERSION (((UCX_VERSION_MAJOR)<<16)|UCX_VERSION_MINOR)

#include <stdlib.h>
#include <stddef.h>
#include <stdbool.h>

/**
 * Structure that contains a pointer to arbitrary data.
 */
struct cx_data_ptr_s {
    /**
     * A pointer to the data.
     */
    unsigned char const *data;
    /**
     * The length of the data.
     */
    size_t len;
};

/**
 * Type for a data pointer with length information.
 */
typedef struct cx_data_ptr_s CxDataPtr;

/**
 * Function pointer compatible with fwrite-like functions.
 */
typedef size_t (*cx_write_func)(
        void const *,
        size_t,
        size_t,
        void *
);

#ifdef _WIN32
#if !(defined __ssize_t_defined || defined _SSIZE_T_)
#include <BaseTsd.h>
typedef SSIZE_T ssize_t;
#define __ssize_t_defined
#define _SSIZE_T_
#endif /* __ssize_t_defined and _SSIZE_T */
#ifndef __WORDSIZE
#ifdef _WIN64
#define __WORDSIZE 64
#else
#define __WORDSIZE 32
#endif
#endif /* __WORDSIZE */
#else /* !_WIN32 */

#include <sys/types.h>

#endif /* _WIN32 */

#ifndef __GNUC__
/**
 * Removes GNU C attributes where they are not supported.
 */
#define __attribute__(x)
#endif

#endif /* UCX_COMMON_H */