From c99cadbe02f659264cecb44c053d96383631147d Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Tue, 17 Nov 2015 05:50:23 +0100 Subject: rearrange files MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- src/string/str/strpbrk.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 src/string/str/strpbrk.c (limited to 'src/string/str/strpbrk.c') diff --git a/src/string/str/strpbrk.c b/src/string/str/strpbrk.c new file mode 100644 index 0000000..8499d31 --- /dev/null +++ b/src/string/str/strpbrk.c @@ -0,0 +1,47 @@ +/** + * slibc — Yet another C library + * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org) + * + * 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, either version 3 of the License, or + * (at your option) any later version. + * + * 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, see . + */ +#include + + + +/** + * This function works like `strcspn`, + * except it returns the pointer to the + * location of the first found non-matching + * byte. + * + * @param string The string. + * @param stopset Bytes disallowed in the substring. + * @return A pointer to the first occurrence in + * `string` of a byte found in `stopset`. + * `NULL` is returned if none is found. + */ +char* (strpbrk)(const char* string, const char* stopset) +{ + char set[256]; + char c; + const char* s = string; + memset(set, 0, 256); + while ((c = *stopset++)) + set[(size_t)c] = 1; + while ((c = *s++)) + if (!set[(size_t)c]) + break; + return c ? (s - 1) : NULL; +} + -- cgit v1.2.3-70-g09d2