Get Next Line

What is it?

This project consists of a function that reads a line from a file descriptor and returns it.
If it is called in a loop, it must read the entire file without losing the reference.

Succeeded with 115%

Skills

• Algorithms & AI
• Imperative programming
• Rigor
• Unix logic

How to use it

Requirements:

sudo apt install clang

Then you will need a C program that has access to a file descriptor, using open in a file, for example:

int main(int argc, char **argv)
{
	int	fd;
	char	*line; // Where the line will be stored

	fd = open(argv[1], O_RDONLY);
	while (get_next_line(fd, &line) == 1);
	{
		printf("%s", line);
		free(line); // Because the line is allocated
	}
	return (0);
}

The return values are 1 (for line read), 0 (for EOF) and -1 (for error). So you can call it in a loop to print the entire file.

After that, compile it, defining the buffer size.

clang -D BUFFER_SIZE=10 main.c get_next_line.c get_next_line_utils.c

And run it!

./a.out text.txt

• The bonus version works the same, but it can handle multiple file descriptors.

Found any bugs?

Feel free to contact me or create an issue!

License

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