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
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27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 hexdump_strdup(const char *src)
39 size_t src_len = strlen(src);
40 size_t dst_size = 3 * src_len + 1;
41 assert(dst_size > src_len);
43 char *dst = malloc(dst_size);
45 perror_msg_and_fail("malloc(%zu)", dst_size);
48 const unsigned char *usrc = (const unsigned char *) src;
49 for (; *usrc; ++usrc) {
50 unsigned int c = *usrc;
52 *(p++) = "0123456789abcdef"[c >> 4];
53 *(p++) = "0123456789abcdef"[c & 0xf];