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get_next_line_utils_bonus.c
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get_next_line_utils_bonus.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_next_line_utils_bonus.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: mpeanuts <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/19 20:57:38 by mpeanuts #+# #+# */
/* Updated: 2021/11/19 20:57:39 by mpeanuts ### ########.fr */
/* */
/* ************************************************************************** */
#include "get_next_line_bonus.h"
size_t ft_strlen(const char *s)
{
size_t count;
count = 0;
while (*s != '\0')
{
count++;
s++;
}
return (count);
}
char *ft_strchr(const char *s, int c)
{
while (*s != '\0')
{
if ((unsigned char)*s == (unsigned char)c)
return ((char *)s);
s++;
}
if ((unsigned char)*s == (unsigned char)c)
return ((char *)s);
return (NULL);
}
char *ft_substr(char const *s, unsigned int start, size_t len)
{
char *sub_s;
size_t i;
size_t s_len;
if (s == NULL)
return (NULL);
s_len = ft_strlen(s);
if (start > s_len)
return (ft_strdup(""));
if (s_len - start < len)
sub_s = (char *)malloc(sizeof(char) * (s_len - start + 1));
else
sub_s = (char *)malloc(sizeof(char) * (len + 1));
if (sub_s == NULL)
return (NULL);
i = 0;
while (i < len && s[start + i] != '\0')
{
sub_s[i] = s[start + i];
i++;
}
sub_s[i] = '\0';
return (sub_s);
}
char *ft_strdup(const char *s1)
{
char *copy;
size_t i;
size_t len;
len = ft_strlen(s1);
copy = (char *)malloc(sizeof(char) * (len + 1));
if (copy == NULL)
return (NULL);
i = 0;
while (i <= len)
{
copy[i] = s1[i];
i++;
}
return (copy);
}
char *ft_strjoin(char const *s1, const char *s2)
{
char *str;
size_t str_len;
size_t i;
if (!s1 || !s2)
return ("");
str_len = ft_strlen(s1) + ft_strlen(s2);
str = (char *)malloc(sizeof(char) * (str_len + 1));
if (str == NULL)
return (NULL);
i = 0;
while (*s1 != '\0')
{
str[i] = *s1;
s1++;
i++;
}
while (*s2 != '\0')
{
str[i] = *s2;
s2++;
i++;
}
str[i] = '\0';
return (str);
}