#include <cal.h>
#include <stdio.h>
#include <string.h>

main (int argc, char *argv[])
{
    int index = 1;
    struct cal *cal_s;
    char version_software_current[512];
    char *version_software_string;
    void *tmp = NULL;
    unsigned long len;
    if (cal_init (&cal_s) < 0)
    {
        printf ("Failed to init CAL.\n");
        return 1;
    }
    if (cal_read_block (cal_s, "sw-release-ver", &tmp, &len, CAL_FLAG_USER) < 0)
    {
        cal_finish (cal_s);
        printf ("Failed to SW Release version from CAL.\n");
        return 2;
    }
    if (len < 1 && !tmp)
    {
        cal_finish (cal_s);
        printf ("Failed to read SW Release version from CAL.\n");
        return 3;
    }
    version_software_string = (char *)tmp;
    strcpy (version_software_current, (char *)version_software_string);
    while (index < argc)
    {
            if (!strcmp (argv[index], "-w"))
        {
            ++index;
            if (index < argc)
            {
                version_software_string = (char *)realloc (version_software_string, (strlen (argv[index]) + 1));
                version_software_string = strcpy (version_software_string, argv[index]);
                printf ("\"%s\" was written.\n", version_software_string);
            }
        }
        ++index;
    }
    if (strcmp (version_software_string, version_software_current))
    {
        if (!strcmp (version_software_string, ""))
        {
            if (cal_write_block (cal_s, "sw-release-ver", version_software_string, sizeof (version_software_string), CAL_FLAG_USER) < 0)
            {
                cal_finish (cal_s);
                printf ("Failed to write to the software version area of CAL.\n");
                return 4;
            }
        }
        else
        {
            if (cal_write_block (cal_s, "sw-release-ver", version_software_string, strlen (version_software_string) + 1, CAL_FLAG_USER) < 0)
            {
                cal_finish (cal_s);
                printf ("Failed to write to the software version area of CAL.\n");
                return 4;
            }
        }
    }
    cal_finish (cal_s);
    return 0;
}