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/**
* slibc — Yet another C library
* Copyright © 2015, 2016 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 <http://www.gnu.org/licenses/>.
*/
#include <string.h>
/**
* Finds the first occurrence of a substring.
* This search is case sensitive.
*
* @param haystack The string to search.
* @param needle The sought after substring.
* @return Pointer to the first occurrence of the
* substring, `NULL` if not found.
*
* @since Always.
*/
char* (strstr)(const char* haystack, const char* needle)
{
if (*needle && !(needle[1]))
return (strchr)(haystack, *needle);
return (memmem)(haystack, strlen(haystack), needle, strlen(needle));
}
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