#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

int main(int argc, char *argv[]) {
    FILE *in;
    int c;
    long count = 0;
    long col = 0;
    char *var_name;
    char *p;
    
    if (argc != 2) {
        fprintf(stderr, "Usage: %s <input_file>\n", argv[0]);
        return 1;
    }

    in = fopen(argv[1], "rb");
    if (!in) {
        perror("Error opening input file");
        return 1;
    }

    var_name = (char *)malloc(strlen(argv[1]) + 1);
    if (!var_name) {
        perror("Memory allocation failed");
        fclose(in);
        return 1;
    }
    
    strcpy(var_name, argv[1]);
    
    for (p = var_name; *p; ++p) {
        if (!isalnum((unsigned char)*p)) {
            *p = '_';
        }
    }

    printf("unsigned char %s[] = {\n", var_name);

    c = fgetc(in);
    while (c != EOF) {
        printf("  0x%02x", c);
        count++;

        int next = fgetc(in);
        if (next != EOF) {
            printf(",");
            ungetc(next, in);
            if (++col >= 12) {
                printf("\n");
                col = 0;
            }
        }
        
        c = fgetc(in);
    }
    
    printf("\n};\n");
    printf("unsigned int %s_len = %lu;\n", var_name, count);
    free(var_name);
    fclose(in);

    return 0;
}