42 Madrid project
Grade: 125/100
get_next_line is a function that reads a line ending with a newline character '\n' from a file descriptor and returns it as a null-terminated string. The implementation of the function reads a line ending with a newline character '\n' from a file descriptor and returns it as a null-terminated string. The implementation of the function also includes the gnl_bzero and gnl_calloc functions.
I see it as a introduction to text parsing for future system and network communication applications.
Include the header file get_next_line_bonus.h in your program, and call the function get_next_line with the file descriptor of the file you want to read from.
#include "get_next_line_bonus.h"
char *line;
int fd;
fd = open("file.txt", O_RDONLY);
line = get_next_line(fd);
printf("%s", line);
close(fd);
The function get_next_line returns a null-terminated string with the next line of the file. If there is an error opening the file, the function returns NULL.
The function has a limit of FOPEN_MAX file descriptors and a buffer size of BUFFER_SIZE. If you want to change these limits, you need to modify the definitions in the header file get_next_line_bonus.h.
The implementation of the get_next_line function also includes the gnl_bzero and gnl_calloc functions.
The gnl_bzero function sets the first 'len' bytes of the block of memory pointed by 'str' to zero.
The gnl_calloc function allocates a block of memory for an array of 'count' elements, each of 'size' bytes and returns a pointer to the first byte of the allocated memory.