From 861a36d86e7587c043131228cf3a08afd7bc43ad Mon Sep 17 00:00:00 2001 From: yctct Date: Thu, 5 Feb 2026 11:56:49 +0100 Subject: Add files, first commit --- ft_substr.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 ft_substr.c (limited to 'ft_substr.c') diff --git a/ft_substr.c b/ft_substr.c new file mode 100644 index 0000000..b1431c8 --- /dev/null +++ b/ft_substr.c @@ -0,0 +1,59 @@ +/* +Libft Copyright (C) 2026 yctct + +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 "libft.h" + +char *ft_substr(char const *s, unsigned int start, size_t len) +{ + char *ptr; + size_t s_len; + size_t ptr_len; + + if (!s) + return (NULL); + s_len = ft_strlen(s); + if (s_len <= start) + return (ft_strdup("")); + else if (s_len > start + len) + ptr_len = len; + else + ptr_len = s_len - start; + ptr = malloc(ptr_len + 1); + ft_strlcpy(ptr, &s[start], ptr_len + 1); + return (ptr); +} + +/* +#include + +int main(void) +{ + char s[] = "lorem ipsum dolor sit amet"; + char *ptr; + + ptr = ft_substr(s, 6, 6); + printf("%s\n", ptr); + free(ptr); + printf("%s\n", ft_substr("", 0, 1)); + printf("%s\n", ft_substr(s, 15, 1)); + printf("%s\n", ft_substr(s, 0, 10)); + printf("%s\n", ft_substr(s, 7, 10)); + printf("%s\n", ft_substr(s, 7, 0)); + printf("%s\n", ft_substr(s, 0, 0)); + printf("%s\n", ft_substr(s, 400, 20)); +} +*/ -- cgit v1.2.3