get_next_line

C project · file I/O, memory

Reads a file descriptor one line at a time with careful dynamic memory handling.

The problem

Return one line at a time from a file descriptor, whatever the buffer size.

A static leftover buffer carried between calls.
Works from BUFFER_SIZE=1 to 9999, on files and standard input; the bonus handles several file descriptors at once.

Memory: never leaking the leftover buffer on errors or at end of file, with only one static variable allowed.

metro · Lisbon metro sim in pixel art: watch the four lines run, step into any station, board a train and ride it.
call_me_maybe · Turns a sentence into a JSON function call with a 0.6B model using constrained decoding — parseable by construction, not by luck.
codexion · Multithreaded twist on the Dining Philosophers: coders compete for shared dongles, with FIFO/EDF scheduling.
fly-in · Drone fleet routing: Dijkstra pathfinding, turn-based scheduling and a pygame replay.
a-maze-ing · Maze generator with multiple algorithms, pathfinding solvers and terminal visualization.
push_swap · Highly optimized sorting with two stacks and a tiny set of allowed operations.
ft_printf · printf rebuilt from scratch: chars, strings, pointers, decimals, unsigned and hex.
Libft · My own C standard library — the foundation every later 42 project is built on.