0bvim / libft

This project is about build your own static library and make your tools.

This is a project that I need to make my own lib replying function of C lib.

Concatenating with header file (.h) and using Makefile to compile a statib lib.

refactoring libft. Changing some functions and adding others.

implemented functions so far:

Functions	Details
ft_atoi.c	Converts the initial portion of the string pointed to by str to int representation
ft_bzero.c	The bzero() function erases the data in the n bytes of the memory starting at the location pointed to by s, by writing zeros (bytes containing '\0') to that area.
ft_calloc.c	The calloc() function allocates memory for an array of nmemb elements of size bytes each and returns a pointer to the allocated memory. The memory is set to zero.
ft_isalnum.c	Checks for an alphanumeric character; it is equivalent to (isal‐pha(c) || is-digit(c)).|| isdigit(c)).
ft_isalpha.c	Checks for an alphabetic character; in the standard "C" locale, it is equivalent to (isupper(c) || islower(c)). In some locales, there may be additional characters for which isalpha() is true—letters which are neither uppercase nor lowercase.
ft_isascii.c	Checks whether c is a 7‐bit unsigned char value that fits into the ASCII character set.
ft_isdigit.c	Checks for a digit (0 through 9).
ft_isprint.c	Checks for any printable character including space.
ft_itoa.c	he string representing the integer. NULL if the allocation fails.
ft_memchr.c	The memchr() function scans the initial n bytes of the memory area pointed to by s for the first instance of c. Both c and the bytes of the memory area pointed to by s are interpreted as unsigned char.
ft_memcmp.c	The memcmp() function compares the first n bytes (each interpreted as unsigned char) of the memory areas s1 and s2.
ft_memcpy.c	The memcpy() function copies n bytes from memory area src to memory area dest. The memory areas must not overlap. Use memmove(3) if the memory areas do overlap.
ft_memmove.c	The memmove() function copies n bytes from memory area src to memory area dest. The memory areas may overlap: copying takes place as though the bytes in src are first copied into a temporary array that does not overlap src or dest, and the bytes are then copied from the temporary array to dest.
ft_memset.c	The memset() function fills the first n bytes of the memory area pointed to by s with the constant byte c.
ft_split.c	The array of new strings resulting from the split. NULL if the allocation fails.
ft_strchr.c	The strchr() function returns a pointer to the first occurrence of the character c in the string s.
ft_strdup.c	The strncmp() function is similar, except it compares only the first (at most) n bytes of s1 and s2.
ft_striteri.c	Applies the function ’f’ on each character of the string passed as argument, passing its index as first argument. Each character is passed by address to ’f’ to be modified if necessary.
ft_strjoin.c	Allocates (with malloc(3)) and returns a new string, which is the result of the concatenation of ’s1’ and ’s2’.
ft_strlcat.c	The strlcat() function concatenate strings. And the explanation is the same of strlcpy function.
ft_strlcpy.c	The strlcpy() function copy a string. This function are designed to be safer, more consistent, and less error prone replacements for strncpy(3). Strlcpy take the full size of the buffer (not just the lenght) and guarantee to NUL-terminate the result.
ft_strlen.c	Calculate the length of a string.
ft_strmapi.c	Applies the function ’f’ to each character of the string ’s’, and passing its index as first argument to create a new string (with malloc(3)) resulting from successive applications of ’f’.
ft_strncmp.c	The strncmp() function is similar, except it compares only the first (at most) n bytes of s1 and s2.
ft_strnstr.c	The strnstr() function locates the first occurrence of the null-terminated string little in the string big, where not more than len characters are searched.
ft_strrchr.c	The strrchr() function returns a pointer to the last occurrence of the character c in the string s.
ft_strtrim.c	Allocates (with malloc(3)) and returns a copy of ’s1’ with the characters specified in ’set’ removed from the beginning and the end of the string.
ft_substr.c	Allocates (with malloc(3)) and returns a substring from the string ’s’. The substring begins at index ’start’ and is of maximum size ’len’.
ft_tolower.c	Convert to lowercase.
ft_toupper.c	Convert to uppercase.

Bonus

Functions	Details
ft_lstnew.c	Allocates (with malloc(3)) and returns a new node. The member variable ’content’ is initialized with the value of the parameter ’content’. The variable ’next’ is initialized to NULL.
ft_lstadd_front.c	Adds the node ’new’ at the beginning of the list.
ft_lstsize.c	Counts the number of nodes in a list.
ft_lstlast.c	Returns the last node of the list.
ft_lstadd_back.c	Adds the node ’new’ at the end of the list.
ft_lstdelone.c	Takes as a parameter a node and frees the memory of the node’s content using the function ’del’ given as a parameter and free the node. The memory of ’next’ must not be freed.
ft_lstclear.c	Deletes and frees the given node and every successor of that node, using the function ’del’ and free(3). Finally, the pointer to the list must be set to NULL.
ft_lstiter.c	Iterates the list ’lst’ and applies the function ’f’ on the content of each node.
ft_lstmap.c	Iterates the list ’lst’ and applies the function ’f’ on the content of each node. Creates a new list resulting of the successive applications of the function ’f’. The ’del’ function is used to delete the content of a node if needed.

Header and Makefile

Files	Details
libft.h	This header handle both, mandatory and bonus part.
Makefile	Makefile to make bonus and mandatory part.

HOW USE IT?

Following command are in terminal. ($)
First, clone repository with your the way you prefer

gh repo clone vinicius-f-pereira/42_libft

or

git clone [e-mail]:vinicius-f-pereira/42_libft.git

or

git clone https://github.com/vinicius-f-pereira/42_libft.git

Now you need to build libftprintf.a

cd 42_libft
make

You need of a main.c file with path do header and compile it with static library

The recipe to compile executable

cc main.c libft.a -Iincludes -o libft
./libft

Here's a boilerplate of a main.c

#include "libft.h"

int  main(void)
{
  int  letters = ft_strlen("Hello");
  ft_putnbr_fd(letters, STDOUT_FILENO);
  ft_putchar_fd('\n', STDOUT_FILENO);
  ft_putstr_fd("Hello\n", STDOUT_FILENO);
  return (0); 
}