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/*
* Make a hexquoted copy of a string
*
* Copyright (c) 2016-2021 Dmitry V. Levin <ldv@strace.io>
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
const char *
hexquote_strndup(const char *src, const size_t src_len)
{
const size_t dst_size = 4 * src_len + 1;
assert(dst_size > src_len);
char *dst = malloc(dst_size);
if (!dst)
perror_msg_and_fail("malloc(%zu)", dst_size);
char *p = dst;
for (size_t i = 0; i < src_len; ++i) {
unsigned int c = ((const unsigned char *) src)[i];
*(p++) = '\\';
*(p++) = 'x';
*(p++) = "0123456789abcdef"[c >> 4];
*(p++) = "0123456789abcdef"[c & 0xf];
}
*p = '\0';
return dst;
}
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