Libft - 42 Project

Table of Contents

• Introduction
• Project Overview
• Features
• Functions Implemented
• Installation
• Usage
• Testing

Introduction

Welcome to Libft, the first project of the 42 curriculum. The goal of this project is to create a C library that will mimic some of the standard C library functions and additional utility functions that will be used throughout the 42 projects.

Project Overview

Libft is a custom implementation of several standard C library functions, including string manipulation, memory handling, and more. This project serves as a foundation for future C projects within the 42 curriculum. By writing these functions from scratch, students develop a deep understanding of how basic functions work under the hood.

Features

• Custom implementation of several essential C standard library functions.
• Includes additional utility functions to facilitate development in future 42 projects.
• Adheres to strict C coding standards imposed by the 42 network (norminette compliant).

Functions Implemented

Libft includes the following categories of functions:

Part 1 - Libc Functions

• ft_memset - Fill memory with a constant byte
• ft_bzero - Zero out a byte string
• ft_memcpy - Copy memory area
• ft_memmove - Move memory area
• ft_memchr - Scan memory for a character
• ft_memcmp - Compare memory areas
• ft_strlen - Calculate the length of a string
• ft_strdup - Duplicate a string
• ft_strcpy - Copy a string
• ft_strncpy - Copy a string up to n characters
• ft_strcat - Concatenate two strings
• ft_strncat - Concatenate two strings, up to n characters
• ft_strchr - Locate character in string
• ft_strrchr - Locate character in string from the end
• ...and many more!

Part 2 - Additional Functions

• ft_substr - Extract a substring from a string
• ft_strjoin - Concatenate two strings into a new one
• ft_strtrim - Trim leading and trailing characters from a string
• ft_split - Split a string into an array based on a delimiter
• ft_itoa - Convert an integer to a string
• ft_putchar_fd - Output a character to a file descriptor
• ft_putstr_fd - Output a string to a file descriptor
• ft_putendl_fd - Output a string to a file descriptor, followed by a newline
• ft_putnbr_fd - Output an integer to a file descriptor

Bonus Part - Linked List Functions

• ft_lstnew - Create a new list node
• ft_lstadd_front - Add a node to the beginning of the list
• ft_lstsize - Count the number of nodes in a list
• ft_lstlast - Return the last node of the list
• ft_lstadd_back - Add a node to the end of the list
• ft_lstdelone - Delete a node and free its content
• ft_lstclear - Clear the entire list
• ft_lstiter - Apply a function to each node of the list
• ft_lstmap - Apply a function to each node and return a new list

Installation

To use the library in your projects:

1. Clone the repository:

   git clone https://github.com/mouaammou/libft-42.git

2. Navigate into the project directory:

   cd libft

3. Compile the library:

   make

4. The compiled library will be available as libft.a.

Usage

To use libft in your project, you need to include it during compilation:

1. Add the header file:

   #include "libft.h"

2. Compile your project with libft.a:

   gcc -Wall -Wextra -Werror -o your_program your_program.c -L. -lft

Example

#include "libft.h"

int main(void)
{
    char str[] = "Hello, World!";
    ft_strrev(str);
    printf("%s\n", str); // Output: !dlroW ,olleH
    return 0;
}

Testing

You can run tests with external testers or write your own to verify your implementation. Some popular testers include:

• 42FileChecker: (https://github.com/jgigault/42FileChecker)
• LibftTester: https://github.com/Tripouille/libftTester To use these testers, follow their respective instructions on installation and running tests.