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get_next_line_utils.c
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get_next_line_utils.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_next_line_utils.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: selbakya <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/05/07 15:36:31 by selbakya #+# #+# */
/* Updated: 2023/05/08 22:28:55 by selbakya ### ########.fr */
/* */
/* ************************************************************************** */
#include "get_next_line.h"
size_t ft_strlen(const char *str)
{
size_t length;
length = 0;
while (str[length])
++length;
return (length);
}
char *ft_strdup(const char *source_string)
{
int length_str;
int i;
char *result;
length_str = ft_strlen(source_string) + 1;
result = (char *) malloc(sizeof(char) * length_str);
if (!result)
return (NULL);
i = 0;
while (i < length_str)
{
result[i] = source_string[i];
++i;
}
return (result);
}
char *ft_substr(char const *s, unsigned int start, size_t len)
{
char *str;
size_t range;
size_t i;
if (!s || !(*s))
return (NULL);
i = ft_strlen(s);
range = 0;
if (start < i)
range = i - start;
if (range > len)
range = len;
str = (char *)malloc((range + 1) * sizeof(char));
if (!str)
return (NULL);
i = 0;
while (i < range)
{
*(str + i) = *(s + start + i);
i++;
}
*(str + i) = '\0';
return (str);
}
char *ft_strchr(const char *pointer_str, int symbol)
{
unsigned char c;
c = (unsigned char)symbol;
if (symbol == 0)
return ((char *)(pointer_str + ft_strlen(pointer_str)));
while (*pointer_str != 0)
{
if (*pointer_str == c)
return ((char *)pointer_str);
++pointer_str;
}
return (NULL);
}
char *ft_strjoin(char *s1, char *s2)
{
size_t len1;
size_t len2;
long i;
char *join;
if (!s1 || !s2)
return (NULL);
len1 = ft_strlen(s1);
len2 = ft_strlen(s2);
join = (char *)malloc((len1 + len2 + 1) * sizeof(char));
if (!join)
return (NULL);
i = -1;
while ((size_t)(++i) < len1)
*(join + i) = *(s1 + i);
--i;
while ((size_t)(++i) < len1 + len2)
*(join + i) = *(s2 + i - len1);
*(join + len1 + len2) = '\0';
if (s1)
free(s1);
return (join);
}