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extract_snap.C

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#include "dyn.h"

#ifdef TOOLBOX

main(int argc, char ** argv)
{
    char  *comment;
    bool  c_flag = FALSE;       // if TRUE, a comment given on command line

    real  t_extract;
    bool  t_flag = FALSE;       // if TRUE, a time was specified

    bool  v_flag = FALSE;       // if TRUE, print snap times as read

    int   n = 1;
    bool  n_flag = false;       // if TRUE, a number was specified

    check_help();

    extern char *poptarg;
    int c;
    char* param_string = "c:n:t:v";

    while ((c = pgetopt(argc, argv, param_string)) != -1)
        switch(c) {
            case 'c': c_flag = TRUE;
                      comment = poptarg;
                      break;
            case 't': t_flag = TRUE;
                      t_extract = atof(poptarg);
                      break;
            case 'n': n_flag = TRUE;
                      n = atoi(poptarg);
                      break;
            case 'v': v_flag = TRUE;
                      break;
            case '?': params_to_usage(cerr, argv[0], param_string);
                      get_help();
                      exit(1);
        }            

    if (n < 0) err_exit("n < 0 specified.");
    if (n > 1 && !t_flag) {
        warning("n > 1 but no time specified -- 0 assumed.");
        t_extract = 0;
        t_flag = true;
    }

    dyn *b = NULL, *bp = NULL;
    int i = 0;

    while (b = get_dyn(cin)) {

        real time = b->get_system_time();
        i++;

        if (v_flag) cerr << "Snap time #" << i << " = " << time << endl;

        if (t_flag && time >= t_extract) {

            if (n > 0) {

                if (c_flag == TRUE)
                    b->log_comment(comment);

                b->log_history(argc, argv);
                put_dyn(cout, *b);
            }

            if (--n <= 0) exit(0);
        }

        if (bp != NULL)         // Hmmm... if (!bp) fails here on merlot!
            rmtree(bp);

        bp = b;
    }

    if (n > 0 && !t_flag) {
        bp->log_history(argc, argv);
        put_dyn(cout, *bp);
    }

}

#endif

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