Libft, personal static library (42 school project)

The aim of this project is to create a static library to use during the cursus at 42 School.

About The Project

Most of the C standard library functions are forbidden during 42 school curriculum, instead students must create their own static library. Many of the functions that can be found in this library are re-creations of functions that already exist in libc, but some others are added beacuse they will be useful for future projects.

C standard library functions

• int ft_isalpha(int c);
• int ft_isdigit(int c);
• int ft_isalnum(int c);
• int ft_isascii(int c);
• int ft_isprint(int c);
• size_t ft_strlen(const char *s);
• void *ft_memset(void *b, int c, size_t len);
• void ft_bzero(void *s, size_t n);
• void *ft_memcpy(void *dst, const void *src, size_t n);
• void *ft_memmove(void *dst, const void *src, size_t len);
• size_t ft_strlcpy(char *dst, const char *src, size_t dstsize);
• size_t ft_strlcat(char *dst, const char *src, size_t dstsize);
• int ft_toupper(int c);
• int ft_tolower(int c);
• char *ft_strchr(const char *s, int c);
• char *ft_strrchr(const char *s, int c);
• int ft_strncmp(const char *s1, const char *s2, size_t n);
• void *ft_memchr(const void *s, int c, size_t n);
• int ft_memcmp(const void *s1, const void *s2, size_t n);
• char *ft_strnstr(const char *haystack, const char *needle, size_t len);
• int ft_atoi(const char *str);
• void *ft_calloc(size_t count, size_t size);
• char *ft_strdup(const char *s1);
• int ft_strcmp(const char *s1, const char *s2);

Extra functions libc

This set of functions are either not in the libc, or are part of it in a different form:

• char *ft_substr(char const *s, unsigned int start, size_t len);
• char *ft_strjoin(char const *s1, char const *s2);
• char *ft_strtrim(char const *s1, char const *set);
• char **ft_split(char const *s, char c);
• char *ft_itoa(int n);
• char *ft_strmapi(char const *s, char (*f)(unsigned int, char));
• void ft_striteri(char *s, void (f)(unsigned int, char));
• void ft_putchar_fd(char c, int fd);
• void ft_putstr_fd(char *s, int fd);
• void ft_putendl_fd(char *s, int fd);
• void ft_putnbr_fd(int n, int fd);

Lists manipulation functions

This set of functions is used to manipulate lists:

• t_list *ft_lstnew(void *content);
• void ft_lstadd_front(t_list **lst, t_list *new);
• int ft_lstsize(t_list *lst);
• t_list *ft_lstlast(t_list *lst);
• void ft_lstadd_back(t_list **lst, t_list *new);
• void ft_lstdelone(t_list *lst, void (*del)(void *));
• void ft_lstclear(t_list **lst, void (*del)(void *));
• void ft_lstiter(t_list *lst, void (*f)(void *));
• t_list *ft_lstmap(t_list *lst, void *(*f)(void *), void (*del)(void *));

Special functions

To make the library more versatile a custom implementation of printf(3) was added. It was also useful to add a function to extract text lines, one at a time, from specific fd's.

• int ft_printf(const char *str, ...);
• char *get_next_line(int fd);

Getting Started

In order to get the library first clone the repository:

git clone git@github.com:ferri17/libft.git

Open the folder:

cd libft/

Compile the library:

make

You can now use libft.a library by linking it in your projects.