aabduvak / 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.

🧰 Get Next Line

FUNCTION TO GET LINE FROM FILE DESCRIPTOR

About · Usage · Testing

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💡 About the project

_The goal of this project is to create the function get_next_line.c which, when called in a loop, will then allow the available text in the file descriptor to be read one line at a time until the end of the file. The program must compile with the flag-D BUFFER_SIZE=xx which will be used as the buffer size for the read calls in get_next_line.

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.

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/abdulazizabduvakhobov/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:
gcc 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
ft_clear_backup	Free the memory and sets to NULL a pointer of type **char.
ft_update	Joins all slices of backup and returns it
ft_init_string	Creates new string and return the result string
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_substr	Creates new string from start parameter to length
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.

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📋 Testing

You can use any of this third party testers to test the project

• Tripouille/libfTester