cosmopolitan/libc/testlib/hexequals.c

44 lines
2.5 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/str/str.h"
#include "libc/testlib/testlib.h"
/**
* Tests that raw memory is equal to numeric representation, e.g.
*
* testlib_hexequals("00010203", "\0\1\2\3", -1ul);
*
* @see unhexstr()
*/
testonly bool testlib_hexequals(const char *want, const void *got, size_t n) {
size_t i;
const unsigned char *p = (const unsigned char *)got;
if (!got) return false;
for (i = 0; i < n; ++i) {
if (!want[i * 2]) break;
if (i == n) break;
if (p[i] != (unsigned char)(hextoint(want[i * 2 + 0]) * 16 +
hextoint(want[i * 2 + 1]))) {
return false;
}
}
return true;
}