2 * Make a hexdump copy of C string
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 hexdump_memdup(const char *src, size_t len)
39 size_t dst_size = 3 * len + 2;
40 assert(dst_size > len);
42 char *dst = malloc(dst_size);
44 perror_msg_and_fail("malloc(%zu)", dst_size);
47 const unsigned char *usrc = (const unsigned char *) src;
49 for (i = 0; i < len; ++i) {
50 unsigned int c = usrc[i];
54 *(p++) = "0123456789abcdef"[c >> 4];
55 *(p++) = "0123456789abcdef"[c & 0xf];
63 hexdump_strdup(const char *src)
65 return hexdump_memdup(src, strlen(src));