Get Next Line - 42 Project

Table of Contents

• Introduction
• Project Overview
• Features
• Function Prototype
• Important Notes

Introduction

Get Next Line (GNL) is a project from the 42 school curriculum designed to develop a deeper understanding of file reading in C. The goal is to create a function that reads a line from a file descriptor, handling both memory management and edge cases effectively.

Project Overview

The Get Next Line project focuses on reading content from a file or input stream, one line at a time. This function will serve as a foundation for more complex input handling in future projects. You are tasked with writing a function that returns the next line from a file descriptor each time it is called.

Features

• Read from any file descriptor, including standard input (stdin).
• Handles multiple file descriptors simultaneously.
• Efficient memory usage with buffers.
• Customizable buffer size.
• Handles different line-ending conventions.

Function Prototype

The core of the project is the get_next_line function:

char *get_next_line(int fd);

Parameters:

int fd: The file descriptor to read from.

Return Value:

char *: The function returns a line read from the file descriptor. The line includes the terminating newline character, except for the last line if it doesn’t end with a newline. Returns NULL if there are no more lines to read, or in case of an error.