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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: ldaniel- <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/07/08 11:59:02 by ldaniel- #+# #+# */
/* Updated: 2021/07/10 16:11:28 by ldaniel- ### ########.fr */
/* */
/* ************************************************************************** */
#include "get_next_line.h"
size_t ft_strclen(const char *s, int c)
{
size_t count;
count = 0;
while (s[count] && s[count] != c)
count++;
return (count);
}
char *ft_strchr(const char *s, int c)
{
int index;
index = 0;
while (s[index])
{
if (s[index] == (unsigned char)c)
return ((char *)s + index);
index++;
}
if (c == '\0')
return ((char *)s + index);
return (NULL);
}
char *ft_strdup(const char *s1)
{
char *dst;
size_t i;
i = 0;
dst = malloc((ft_strclen(s1, '\0') + 1) * sizeof(char));
if (!dst || !s1)
return (NULL);
while (s1[i] != 0)
{
dst[i] = s1[i];
i++;
}
dst[i] = '\0';
return (dst);
}
char *ft_strjoin(char *s1, char const *s2)
{
char *new_str;
size_t i;
unsigned int size_new;
i = 0;
size_new = ft_strclen(s2, '\0');
if (s1 != NULL)
size_new = ft_strclen(s1, '\0') + size_new;
new_str = malloc((size_new + 1) * sizeof(char));
if (new_str == NULL)
return (NULL);
while (s1[i] != '\0')
{
new_str[i] = s1[i];
i++;
}
while (*s2 != '\0')
{
new_str[i] = *s2;
s2++;
i++;
}
new_str[i] = '\0';
free(s1);
return (new_str);
}
char *ft_substr(char const *s, unsigned int start, size_t len)
{
char *substring;
size_t size;
unsigned int i;
if (!s)
return (NULL);
i = 0;
size = ft_strclen(s + start, '\0');
if (size < len)
len = size;
substring = malloc((len + 1) * sizeof(char));
if (substring == NULL)
return (NULL);
while ((i < len) && ((start) < ft_strclen(s, '\0')) && (s[start] != '\0'))
{
substring[i] = s[start];
i++;
start++;
}
substring[i] = '\0';
return (substring);
}