blob: 4d6b53f4c3c21458ceae8eea810f2fbe64ef5e62 [file] [log] [blame]
/*
* Make a hexdump copy of C string
*
* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 "tests.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
const char *
hexdump_memdup(const char *src, size_t len)
{
size_t dst_size = 3 * len + 2;
assert(dst_size > len);
char *dst = malloc(dst_size);
if (!dst)
perror_msg_and_fail("malloc(%zu)", dst_size);
char *p = dst;
const unsigned char *usrc = (const unsigned char *) src;
size_t i;
for (i = 0; i < len; ++i) {
unsigned int c = usrc[i];
*(p++) = ' ';
if (i == 8)
*(p++) = ' ';
*(p++) = "0123456789abcdef"[c >> 4];
*(p++) = "0123456789abcdef"[c & 0xf];
}
*p = '\0';
return dst;
}
const char *
hexdump_strdup(const char *src)
{
return hexdump_memdup(src, strlen(src));
}