This project is a part of the 42 School curriculum. The main goal of the project was to create a function that reads a file and returns the next line on each subsequent call. The function is designed to be used in a loop, which will then read the text available on a file descriptor one line at a time until the end of the text, regardless of the size of either the text or one of its lines.
The project is composed of three main files:
- 'get_next_line.c': This is the main file that contains the get_next_line function.
- 'get_next_line.h': This is the header file that contains the prototypes of the functions used.
- 'get_next_line_utils.c': This file contains the auxiliary functions that are used in the main function.
The get_next_line function reads a file and returns the next line from the file descriptor. It uses a static variable st_save to keep track of what it read from the file but did not return in the previous call.
The function ft_read_st_save is used to read from the file descriptor into a buffer, and then append the buffer to st_save until a newline character is found or the end of the file is reached.
The function ft_get_line is used to extract a line from st_save. It allocates memory for the line and copies characters from st_save until a newline character or the end of the string is reached.
The function ft_st_save is used to update st_save by removing the line that was just read.
To use this function, include the get_next_line.h header file in your program, and then call the get_next_line function with a file descriptor as the argument. The function will return the next line from the file descriptor on each subsequent call, until there are no more lines to return.
This project uses some functions from the libft library, a project at 42 school where students create their own library of useful functions in C. The Makefile is used to compile the library with the project files.