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minilib.c
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minilib.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* minilib.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: nenvoy <nenvoy@student.21-school.ru> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/26 15:37:44 by nenvoy #+# #+# */
/* Updated: 2021/11/26 15:37:44 by nenvoy ### ########.fr */
/* */
/* ************************************************************************** */
#include "pipex.h"
size_t ft_strlen(const char *s)
{
size_t i;
i = 0;
while (s[i] != '\0')
i++;
return (i);
}
void ft_putstr_fd(char *s, int fd)
{
size_t i;
i = 0;
if (s)
{
while (s[i] != '\0')
{
write (fd, &s[i], 1);
i++;
}
}
}
char *ft_strjoin(char const *s1, char const *s2)
{
char *str;
size_t i;
size_t j;
i = 0;
j = 0;
if (s1 == 0 || s2 == 0)
return (0);
str = malloc ((ft_strlen(s1) + ft_strlen(s2) + 1));
if (str == 0)
return (0);
while (s1[i] != '\0')
{
str[i] = s1[i];
i++;
}
while (s2[j] != '\0')
str[i++] = s2[j++];
str[i] = '\0';
return (str);
}
int ft_strncmp(const char *s1, const char *s2, size_t n)
{
size_t i;
i = 0;
if (n == 0)
return (0);
while (s1[i] != '\0' && s1[i] == s2[i] && i < (n - 1))
i++;
return ((unsigned char)s1[i] - (unsigned char)s2[i]);
}
char *ft_substr(char const *s, unsigned int start, size_t len)
{
char *substr;
size_t i;
i = 0;
if (s == NULL)
return (0);
if (len > ft_strlen(s))
len = ft_strlen(s);
substr = (char *) malloc ((len + 1));
if (substr == NULL)
return (NULL);
if (start >= ft_strlen (s))
{
substr[i] = '\0';
return (substr);
}
while (len != 0 && s[start] != '\0')
{
substr[i++] = s[start++];
len--;
}
substr[i] = '\0';
return (substr);
}