/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2005 Poul-Henning Kamp
 * 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.
 */

#include <namespace.h>
#include <stdio.h>
#include <wchar.h>
#include <stdint.h>
#include <assert.h>
#include <sys/time.h>
#include "printf.h"

int
__printf_arginfo_hexdump(const struct printf_info *pi, size_t n, int *argt)
{

        assert(n >= 2);
        argt[0] = PA_POINTER;
        argt[1] = PA_INT;
        return (2);
}

int
__printf_render_hexdump(struct __printf_io *io, const struct printf_info *pi, const void *const *arg)
{
        unsigned char *p;
        int i;
        unsigned u, l, j, a;
        char buf[100], *q;
        int ret;

        if (pi->width > 0 && pi->width < 16)
                l = pi->width;
        else
                l = 16;
        p = *((unsigned char **)arg[0]);
        i = *((int *)arg[1]);
        if (i < 0)
                i = 0;
        u = i;

        ret = 0;
        a = 0;
        while (u > 0) {
                q = buf;
                if (pi->showsign)
                        q += sprintf(q, " %04x", a);
                for (j = 0; j < l && j < u; j++)
                        q += sprintf(q, " %02x", p[j]);
                if (pi->alt) {
                        for (; j < l; j++)
                                q += sprintf(q, "   ");
                        q += sprintf(q, "  |");
                        for (j = 0; j < l && j < u; j++) {
                                if (p[j] < ' ' || p[j] > '~')
                                        *q++ = '.';
                                else
                                        *q++ = p[j];
                        }
                        for (; j < l; j++)
                                *q++ = ' ';
                        *q++ = '|';
                }
                if (l < u)
                        j = l;
                else
                        j = u;
                p += j;
                u -= j;
                a += j;
                if (u > 0)
                        *q++ = '\n';
                ret += __printf_puts(io, buf + 1, q - (buf + 1));
                __printf_flush(io);
        }
        return (ret);
}