From 2504bc9ef9e54cd600cec086ece9a5df4cbe8dd8 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sun, 21 Oct 2018 15:11:23 +0200 Subject: Add {str,mem}[r][case]eqlen MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- memcaseeqlen.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 memcaseeqlen.c (limited to 'memcaseeqlen.c') diff --git a/memcaseeqlen.c b/memcaseeqlen.c new file mode 100644 index 0000000..79ab198 --- /dev/null +++ b/memcaseeqlen.c @@ -0,0 +1,42 @@ +/* See LICENSE file for copyright and license details. */ +#include "libsimple.h" +#ifndef TEST + + +size_t +libsimple_memcaseeqlen(const void *a_, size_t n, const void *b_, size_t m) +{ + const char *a = a_, *b = b_; + size_t i = 0; + n = n < m ? n : m; + for (; i < n && tolower(a[i]) == tolower(b[i]); i++); + return i; +} + + +#else +#include "test.h" + +int +main(void) +{ + char s[] = "abcdefgh", t[] = "ABCDEFGH"; + size_t i, j; + assert(libsimple_memcaseeqlen("x", 0, "x", 0) == 0); + assert(libsimple_memcaseeqlen("x", 1, "x", 0) == 0); + assert(libsimple_memcaseeqlen("x", 1, "y", 1) == 0); + assert(libsimple_memcaseeqlen("y", 0, "y", 1) == 0); + for (i = 0; i <= 8; i++) { + for (j = 0; j <= 8; j++) { + assert(libsimple_memcaseeqlen(&s[i], 8 - i, &t[j], 8 - j) == (i == j ? 8 - i : 0)); + assert(libsimple_memcaseeqlen(s, i, t, j) == (i < j ? i : j)); + assert(libsimple_memcaseeqlen(&t[i], 8 - i, &s[j], 8 - j) == (i == j ? 8 - i : 0)); + assert(libsimple_memcaseeqlen(t, i, s, j) == (i < j ? i : j)); + } + } + assert(libsimple_memcaseeqlen("abc", 3, "abc", 3) == 3); + assert(libsimple_memcaseeqlen("123", 3, "123", 3) == 3); + return 0; +} + +#endif -- cgit v1.2.3-70-g09d2