#include <stdio.h>
#include <stdlib.h>
#include "backwards_file.h"

//┌───────────────────────────────────────────────┐
//│ This was created in OFFICE HOURS on 3/28/2019.│
//└───────────────────────────────────────────────┘

int main(int argc, char* argv[]) {
    if(argc != 2) {
        fprintf(stderr, "Usage:  tac FILENAME\n");
        return EXIT_FAILURE;
    }
    char* filename = argv[1];

    FileWrapper* file_wrapper = create_file_wrapper(filename);

    while(true) {
        unsigned char* line = read_line(file_wrapper);

        // If there are no more lines (or if there was an error), then quit.
        if(line == NULL) {
            break;
        }

        // Print the line.  Notice no newline because it probably ended with a newline.
        printf("%s", line);

        // Just in case last line of file doesn't end in a '\n'  (RARE)
        if(line[strlen(line)] != '\n') {
            printf("\n");
        }

        free(line);
    }

    free_wrapper(file_wrapper);
    
    return EXIT_SUCCESS;
}

// TODO: Test -- This code was created as an example and has not been tested.

/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */