79 lines
1.3 KiB
C
79 lines
1.3 KiB
C
/*
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** create a copy of s without the firsts and lasts empty characters
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*/
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/*
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** #include <libc.h>
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**
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** char *ft_substr(char const *s, unsigned int start, size_t len)
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** {
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** char *str;
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** size_t i;
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**
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** if (!s)
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** return (NULL);
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** if (!(str = (char *)malloc(sizeof(char) * (len + 1))))
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** return (NULL);
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** str[len] = '\0';
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** i = 0;
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** while (i < len)
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** str[i++] = s[start++];
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** return (str);
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** }
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**
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** size_t ft_strlen(const char *str)
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** {
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** size_t i;
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**
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** i = 0;
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** while (str[i])
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** i++;
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** return (i);
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** }
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**
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** char *ft_strchr(const char *s, int c)
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** {
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** int i;
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** int j;
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**
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** i = 0;
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** j = -1;
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** while (s[i])
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** i++;
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** while (++j < i + 1)
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** if (s[j] == c)
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** return ((char *)s + j);
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** return (NULL);
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** }
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**
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** char *ft_strtrim(char const *s1, char const *set);
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**
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** int main(int ac, char **av)
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** {
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** if (ac == 3)
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** printf("%s\n",ft_strtrim(av[1], av[2]));
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**
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** return (0);
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** }
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*/
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#include "libft.h"
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char *ft_strtrim(char const *s1, char const *set)
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{
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int len;
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char *str;
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if (!s1)
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return (NULL);
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while (s1[0] && ft_strchr(set, s1[0]))
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s1++;
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len = ft_strlen(s1) - 1;
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while (len >= 0 && ft_strchr(set, s1[len]))
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len--;
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len++;
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if (!(str = ft_substr(s1, 0, len)))
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return (NULL);
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return (str);
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}
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