Get Next Line

My implementation of the get_next_line function, similar to the getline from CPP and fgets from C.

What is GNL?

Get Next Line is an individual project at 42 that requires us to create a function similar to the getline from CPP and fgets from C. This function allows a file to be read line after line if called in a loop.

Application flow

Click here for the interactive link or here for the full image.

Badge

Objectives

Unix logic

Skills

Rigor
Unix
Algorithms & AI

My grade

Getting started

Follow the steps below

# Clone the project and access the folder
git clone https://github.com/wwwwelton/GNL && cd GNL/

# Create a main file
touch main.c

/*
** Example of a main, change "myfile.txt"
** to a file you want to read
*/

#include <stdio.h>
#include <fcntl.h>
#include "get_next_line.h"

int main(void)
{
	char	*temp;
	int	fd;

	fd = open("myfile.txt", O_RDONLY);

	while(1)
	{
		temp = get_next_line(fd);
		if (!temp)
		break ;
		printf("%s", temp);
		free(temp);
	}
	return (0);
}

# Compile the files, example:
clang get_next_line.c get_next_line.h get_next_line_utils.c main.c

# Execute your program
./a.out

# Well done!

Functions table reference

The functions present in the utils are from the Libft with some code optimizations.

GNL Functions
Name	Description
free_ptr	Free the memory and sets to NULL a pointer of type **char.
extract_line	Extracts a string from a string delimited by \n.
read_file	Read a file and save the result in a buffer.
get_line	Returns a string from a buffer.
get_next_line	Reads a line from a file descriptor.
Libft Functions
Name	Description
ft_strlen	Computes the length of the string but not including the terminating null character.
ft_strdup	Returns a pointer to a null-terminated byte string, which is a duplicate of the string.
ft_substr	Converts the string to an integer (type int).
ft_strchr	Returns a substring from the string 's'. The substring begins at index 'start' and is of maximum size 'len'.
ft_strjoin	Returns a new string, which is the result of the concatenation of 's1' and 's2'.

Updating

The project is regularly updated with bug fixes and code optimization.

📝 License

This project is licensed under the GNU General Public License v3.0 - see the LICENSE file for details.

Made by Welton Leite 👋 See my linkedin

wwwwelton/get_next_line