Get Next Line - 42 Project

This project aims to read a line of text from a specified file descriptor and return a pointer to the line. The function get_next_line() allows reading a file descriptor one line at a time, making it easier to handle and manipulate the text. The function returns the line that was read, including the terminating \n character, except when the end of the file was reached and does not end with a \n character.

The function is prototyped as char *get_next_line(int fd) and is included in the header file get_next_line.h. The turn-in files include the implementation of the function in get_next_line.c, along with any necessary helper functions in get_next_line_utils.c.

The function takes an integer file descriptor value fd as a parameter and returns a pointer to the line read from the file descriptor. If there is nothing else to read or if an error occurred, the function returns NULL.

The function uses external functions read(), malloc(), and free(). To define the buffer size for read(), the option -D BUFFER_SIZE=n must be added to the compiler call.

The implementation of get_next_line() allows repeated calls to read the text file pointed to by the file descriptor, one line at a time. The function works as expected when reading a file or reading from the standard input.

In conclusion, get_next_line() is a useful function for reading text from a file descriptor one line at a time. Its implementation and the accompanying helper functions in this project meet the requirements and specifications set forth in the project instructions.

Compilation:

  # Compiles with no bonus and creates gnl.a static library
  make 
  # Compiles the bonus and creates the gnl_bonus.a static library
  make bonus

Usage:

Link the static libraries created with your project and call get_next_line() on an open file descriptor.