diff options
Diffstat (limited to 'libft/src/ft_strsubst.c')
| -rw-r--r-- | libft/src/ft_strsubst.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/libft/src/ft_strsubst.c b/libft/src/ft_strsubst.c new file mode 100644 index 0000000..dd89917 --- /dev/null +++ b/libft/src/ft_strsubst.c @@ -0,0 +1,36 @@ +/* ************************************************************************** */ +/* */ +/* ::: :::::::: */ +/* ft_strsubst.c :+: :+: :+: */ +/* +:+ +:+ +:+ */ +/* By: rbousset <marvin@42.fr> +#+ +:+ +#+ */ +/* +#+#+#+#+#+ +#+ */ +/* Created: 2020/02/14 17:19:27 by rbousset #+# #+# */ +/* Updated: 2020/02/14 17:19:29 by rbousset ### ########lyon.fr */ +/* */ +/* ************************************************************************** */ + +#include <libft.h> +#include <stdlib.h> + +char + *ft_strsubst(char *str, const char *pattern, const char *subst) +{ + size_t nlen; + char *nstr; + char *ptr; + + if (!(ptr = ft_strnstr(str, pattern, ft_strlen(str)))) + return (NULL); + nlen = ft_strlen(str) - ft_strlen(pattern) + ft_strlen(subst); + if (!(nstr = (char*)malloc((nlen + 1) * sizeof(char)))) + return (NULL); + ft_memcpy(nstr, str, ptr - str); + ft_memcpy(nstr + (ptr - str), subst, ft_strlen(subst)); + ft_memcpy(nstr + (ptr - str + ft_strlen(subst)), + str + (ptr - str + ft_strlen(pattern)), + ft_strlen(str + (ptr - str + ft_strlen(pattern)))); + nstr[nlen + 1] = '\0'; + ft_memdel((void*)&str); + return (nstr); +} |