fgetline

int fgetline(FILE *  f, char ** line){
	if(f == NULL) return -1;
	if(line == NULL) return -2;
	unsigned long alloc = 32;
	*line = malloc(sizeof(char) * (alloc + 1));
	char c = 0;
	size_t i = 0;
	while((c = fgetc(f)) != '\n' && c != EOF){
		(*line)[i++] = c;
		if((i+2) >= alloc){
			alloc *= 2;
		    *line = realloc(*line, (alloc + 1) * sizeof(char));
			if(*line == NULL) return -4;
		}
	}
    (*line)[i] = '\0';

	return c == EOF;

}