LIBFT Project

This repository contains a complete implementation of three foundational C libraries: libft, printf, and gnl (Get Next Line). Each library is designed to be modular and can be used independently for various projects. You can compile them separately using the commands make libft, make printf, and make gnl. Ensure you include the respective header files in your projects for proper functionality.

Table of Contents

• LIBFT
• PRINTF
• GNL (Get Next Line)
• Usage
• Examples
• License

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LIBFT

libft is a personalized implementation of commonly used standard C library functions. It includes utilities for string manipulation, memory handling, linked lists, and more.

Features

• Custom replacements for standard functions such as strlen, memset, and strncpy.
• Extended utilities like ft_split for splitting strings and ft_itoa for integer-to-string conversion.
• Basic linked list operations: create, add, remove, and iterate through list elements.

Highlighted Functions

• ft_strlen: Calculate the length of a string.
• ft_itoa: Convert an integer to a string.
• ft_split: Split a string into an array using a delimiter.
• ft_lstnew: Create a new linked list node.

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PRINTF

printf is a simplified recreation of the standard printf function, supporting formatted output for various data types.

Features

• Format Specifiers: %d, %i, %u, %x, %X, %c, %s, %p, and %%.
• Modifiers: Handles width, precision, and flags like -, +, 0, #, and space.
• Easy-to-integrate solution for formatted output in embedded or custom systems.

Example

ft_printf("Hello, 42! This is an integer: %d and a hex: %x\n", 42, 255);

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GNL (Get Next Line)

gnl provides an efficient way to read lines from file descriptors, even for large files or when managing multiple files simultaneously.

Features

• Reads one line at a time, making it memory-efficient for large files.
• Handles multiple file descriptors concurrently.
• Avoids memory leaks through robust buffer management.

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Usage

Compiling the Libraries

To build the libraries:

make

This will create the libft.a archive containing all three libraries.

Using Individual Libraries

You can compile each library independently:

make libft
make printf
make gnl

Including in Your Projects

1. Add the header files:

   #include "libft.h"
   #include "pr_printf.h"
   #include "get_next_line.h"

2. Link the compiled archive:

   cc -Wall -Wextra -Werror -Iincludes <your_file.c> libft.a -o <your_output>

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Examples

Testing All Libraries

Here's a combined test program to showcase the capabilities of all three libraries:

#include "libft.h"
#include "pr_printf.h"
#include "get_next_line.h"
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>

int main(void) {
	// Testing LIBFT
	printf("=== LIBFT ===\n");
	char *str = ft_strdup("Hello, Libft!");
	printf("Duplicated string: %s\n", str);
	free(str);

	// Testing PRINTF
	printf("\n=== PRINTF ===\n");
	ft_printf("Formatted output: Integer: %d, Hex: %x, String: %s\n", 42, 255, "Hello!");

	// Testing GNL
	printf("\n=== GET NEXT LINE ===\n");
	int fd = open("test_file.txt", O_RDONLY);
	if (fd < 0) {
		perror("Error opening file");
		return 1;
	}
	char *line;
	while ((line = get_next_line(fd)) != NULL) {
		printf("%s", line);
		free(line);
	}
	close(fd);

	return 0;
}

Running the Test

To compile and run:

cc -Wall -Wextra -Werror -Iincludes test.c libft.a -o test_program
./test_program

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License

This project is released under the MIT License. For details, refer to the LICENSE file.

Author

• Romain - Github : rom98759