#!/usr/bin/perl -w
# NAME: showplayback.pl
# AIM: SPECIFIC - Read the FG playback.xml, and show simple list of 'xml' chunks,
# and then read a 'playback' recording, and show the 'changes' over time...
# 05/06/2016 review - some minor tweaks... found typo in playback.xml file, 
# 17/12/2010 geoff mclane http://geoffair.net/mperl
use strict;
use warnings;
use File::Basename;  # split path ($name,$dir,$ext) = fileparse($file [, qr/\.[^.]*/] )
use Cwd;
use Time::HiRes qw( usleep gettimeofday tv_interval );
my $perl_dir = 'C:\GTools\perl';
unshift(@INC, $perl_dir);
require 'logfile.pl' or die "Unable to load logfile.pl ...\n";
require 'fg_wsg84.pl' or die "Unable to load fg_wsg84.pl ...\n";
require "Bucket2.pm" or die "Unable to load Bucket2.pm ...\n";
# log file stuff
my ($LF);
my $pgmname = $0;
if ($pgmname =~ /(\\|\/)/) {
    my @tmpsp = split(/(\\|\/)/,$pgmname);
    $pgmname = $tmpsp[-1];
}
my $outfile = $perl_dir."\\temp.$pgmname.txt";
open_log($outfile);

# user variables
my $load_log = 1;
my $in_file = 'D:\FG\d-and-c\install\FlightGear\fgdata\Protocol\playback.xml';
my $in_flight = 'D:\FG\d-and-c\tracks\6-27-2016-1.csv'; # Jsin's flight south
#my $in_file = 'C:\FG\28\data\Protocol\playback.xml';
#my $in_file = 'D:\FG\fg-64\install\FlightGear\fgdata\Protocol\playback.xml';
#my $in_flight = 'D:\FG\fg-64\LPMA-01.csv'; # 1000 ft circuit
#my $in_flight = 'C:\FG\27\bin\records\zips\temp2\flight_gil_03.txt'; # resonable circuit, bad landing
#my $in_flight = 'C:\FG\27\bin\records\zips\temp\flt-gilc172-01.txt';
#my $in_flight = 'C:\FG\27\bin\records\third_flight.txt';
#my $in_flight = 'C:\FG\27\bin\records\flight_gil_02.txt';
#my $in_flight = 'C:\FG\27\bin\records\third_t01.txt';
my $SG_EPSILON = 0.000001;
my $play_cols = 77;
my $use_blanked_path = 0;

my $list_node_set = 0;
my $show_duplications = 0;
my $min_name_len = 32;
my $min_node_len = 48;
my $debug_on = 0;
my $def_file = 'def_file';
my $dbg_pb01 = 0;

### program variables
my @warnings = ();
my $cwd = cwd();
my $os = $^O;
my $previous_node = '    ';
my $g_used_of_cache = 0;
my $t0 = [gettimeofday];

sub show_warnings($) {
    my ($val) = @_;
    if (@warnings) {
        prt( "\nGot ".scalar @warnings." WARNINGS...\n" );
        foreach my $itm (@warnings) {
           prt("$itm\n");
        }
        prt("\n");
    } else {
        prt( "\nNo warnings issued.\n\n" );
    }
}

sub pgm_exit($$) {
    my ($val,$msg) = @_;
    show_warnings($val);
    if (length($msg)) {
        $msg .= "\n" if (!($msg =~ /\n$/));
        prt($msg);
    }
    my $elap = tv_interval( $t0, [gettimeofday] );
    prt("Ran of $elap seconds...\n");
    # prt("Used offset cache $g_used_of_cache times...\n");
    close_log($outfile,$load_log);
    exit($val);
}


sub prtw($) {
   my ($tx) = shift;
   $tx =~ s/\n$//;
   prt("$tx\n");
   push(@warnings,$tx);
}

sub get_autopilot_nodes() {
    my $apnds = <<EOF;
/autopilot/locks/wing-leveler
/autopilot/locks/heading
/autopilot/locks/nav[0]
/autopilot/locks/glide-slope[0]
/autopilot/locks/altitude
/autopilot/settings/altitude-ft
EOF
    return $apnds;
}

sub get_playback_nodes() {
    my $ppns = <<EOF;
/accelerations/ned/east-accel-fps_sec
/accelerations/ned/north-accel-fps_sec
/accelerations/nlf
/accelerations/pilot/x-accel-fps_sec
/accelerations/pilot/y-accel-fps_sec
/accelerations/pilot/z-accel-fps_sec
/controls/autoflight/altitude-select
/controls/autoflight/autopilot[0]/engage
/controls/autoflight/bank-angle-select
/controls/autoflight/heading-select
/controls/autoflight/speed-select
/controls/autoflight/vertical-speed-select
/controls/electric/APU-generator
/controls/electric/battery-switch
/controls/electric/external-power
/controls/engines/engine[0]/cutoff
/controls/engines/engine[0]/fuel-pump
/controls/engines/engine[0]/ignition
/controls/engines/engine[0]/magnetos
/controls/engines/engine[0]/mixture
/controls/engines/engine[0]/propeller-pitch
/controls/engines/engine[0]/starter
/controls/engines/engine[0]/throttle
/controls/engines/engine[1]/cutoff
/controls/engines/engine[1]/fuel-pump
/controls/engines/engine[1]/ignition
/controls/engines/engine[1]/magnetos
/controls/engines/engine[1]/mixture
/controls/engines/engine[1]/propeller-pitch
/controls/engines/engine[1]/starter
/controls/engines/engine[1]/throttle
/controls/flight/aileron-trim
/controls/flight/aileron[0]
/controls/flight/elevator
/controls/flight/elevator-trim
/controls/flight/flaps
/controls/flight/rudder
/controls/flight/rudder-trim
/controls/flight/slats
/controls/flight/speedbrake
/controls/gear/brake-left
/controls/gear/brake-parking
/controls/gear/brake-right
/controls/gear/gear-down
/controls/gear/steering
/controls/hydraulic/system[0]/electric-pump
/controls/hydraulic/system[0]/engine-pump
/controls/hydraulic/system[1]/electric-pump
/controls/hydraulic/system[1]/engine-pump
/gear/gear/position-norm
/gear/gear[1]/position-norm
/gear/gear[2]/position-norm
/gear/gear[3]/position-norm
/gear/gear[4]/position-norm
/orientation/heading-deg
/orientation/pitch-deg
/orientation/roll-deg
/orientation/side-slip-deg
/position/altitude-ft
/position/latitude-deg
/position/longitude-deg
/surface-positions/elevator-pos-norm[0]
/surface-positions/flap-pos-norm[0]
/surface-positions/left-aileron-pos-norm[0]
/surface-positions/right-aileron-pos-norm[0]
/surface-positions/rudder-pos-norm[0]
/velocities/airspeed-kt
/velocities/glideslope
/velocities/mach
/velocities/speed-down-fps
/velocities/speed-east-fps
/velocities/speed-north-fps
/velocities/uBody-fps
/velocities/vBody-fps
/velocities/vertical-speed-fps
/velocities/wBody-fps
EOF
    return $ppns;
}

sub is_valid_ch_hash($) {
    my ($val) = @_;
    return 1 if (defined ${$val}{'name'} && 
        defined ${$val}{'node'} && 
        defined ${$val}{'type'} &&
        defined ${$val}{'offset'});
    return 0;
}

sub get_decimal_stg($$$) {
    my ($dec,$il,$dl) = @_;
    my (@arr);
    if ($dec =~ /\./) {
        @arr = split(/\./,$dec);
        if (scalar @arr == 2) {
            $arr[0] = " ".$arr[0] while (length($arr[0]) < $il);
            $dec = $arr[0];
            if ($dl > 0) {
                $dec .= ".";
                $arr[1] = substr($arr[1],0,$dl) if (length($arr[1]) > $dl);
                $dec .= $arr[1];
            }
        }
    } else {
        $dec = " $dec" while (length($dec) < $il);
        if ($dl) {
            $dec .= ".";
            while ($dl--) {
                $dec .= "0";
            }
        }
    }
    return $dec;
}


sub get_heading_stg($) {
    my ($hdg) = @_;
    #return get_decimal_stg($hdg,3,1);
    return get_decimal_stg($hdg,3,0);
}

sub get_sg_dist_stg($) {
    my ($sg_dist) = @_;
    my $sg_km = $sg_dist / 1000;
    my $sg_im = int($sg_dist);
    my $sg_ikm = int($sg_km + 0.5);
    my $dlen = 5;
    # if (abs($sg_pdist) < $CP_EPSILON)
    my $sg_dist_stg = "";
    if (abs($sg_km) > $SG_EPSILON) { # = 0.0000001; # EQUALS SG_EPSILON 20101121
        if ($sg_ikm && ($sg_km >= 1)) {
            $sg_km = int(($sg_km * 10) + 0.05) / 10;
            #$sg_dist_stg .= get_decimal_stg($sg_km,5,1)." km";
            $sg_dist_stg .= get_decimal_stg($sg_km,($dlen - 2),1)." km";
        } else {
            #$sg_dist_stg .= "$sg_im m, <1km";
            #$sg_dist_stg .= get_decimal_stg($sg_im,7,0)." m.";
            $sg_dist_stg .= get_decimal_stg($sg_im,$dlen,0)." m.";
        }
    } else {
        #$sg_dist_stg .= "0 m";
        #$sg_dist_stg .= get_decimal_stg('0',7,0)." m.";
        $sg_dist_stg .= get_decimal_stg('0',$dlen,0)." m.";
    }
    return $sg_dist_stg;
}


sub process_in_file($) {
    my ($inf) = @_;
    if (! open INF, "<$inf") {
        pgm_exit(1,"ERROR: Unable to open file [$inf]\n"); 
    }
    my @lines = <INF>;
    close INF;
    my $lncnt = scalar @lines;
    prt("Processing $lncnt lines, from [$inf]...\n");
    my ($line,$inc,$lnn,$len,$i,$ch,$pc,$nc,$intag,$tag,$txt,$inch,$chcnt,$chunk,$type,$incomm);
    my ($indata,$lasttag,$tnum,$key,$val,$ininput,$inoutput,$where,$dir,$nodcnt,$namcnt,$nxttxt);
    my ($chname,$chnode,$chtype,$node,$name,$choff);
    $lnn = 0;
    $ch = '';
    $intag = 0;
    $inch = 0;
    $tag = '';
    $txt = '';
    $chcnt = 0;
    $chunk = '';
    $type = '';
    $incomm = 0;
    $indata = 0;
    $ininput = 0;
    $inoutput = 0;
    my %chunks = ();    # hold it all

    my %chunkh = ();
    my %inames = ();
    my %itypes = ();
    my %inodes = ();
    my %onames = ();
    my %otypes = ();
    my %onodes = ();

    my %nnames = ();
    my %ntypes = ();
    my %nnodes = ();
    my $rnames = \%nnames;
    my $rtypes = \%ntypes;
    my $rnodes = \%nnodes;
    #my @chunkrefsi = ();
    #my @chunkrefso = ();
    #my @nochunks = ();
    #my $rca = \@nochunks;
    $where = '';
    $dir = 'n';
    $choff = 0; # offset of this chunk as found in file
    foreach $line (@lines) {
        chomp $line;
        $lnn++;
        $line = trim_all($line);
        $len = length($line);
        next if ($len == 0);
        for ($i = 0; $i < $len; $i++) {
            $pc = $ch;
            $ch = substr($line,$i,1);
            if ($intag) {
                if ($ch eq '>') {
                    if ($inch) {
                       if ($tag =~ /^\?/) {
                            # header
                            $type = 'hdr';
                        } elsif ($tag =~ /^!--/) {
                            $incomm = 1;
                            $type = 'bgn.comm';
                        } elsif ($tag =~ /--$/) {
                            $incomm = 0;
                            $type = 'end.comm';
                        } elsif ($tag =~ /^!\[CDATA\[/) {
                            $indata = 1;
                        } elsif ($tag =~ /\]\]$/) {
                            $indata = 0;
                        } elsif ($tag =~ /\/$/) {
                            $type = 'closed';
                        } elsif ($tag =~ /^\//) {
                            $type = 'close';
                            if (length($txt)) {
                                $chunk .= "$txt ";
                                $chunkh{$lasttag} = $txt;
                            }
                            if ($tag eq '/chunk') {
                                # STORE THE COLLECTED CHUNK
                                # Get storage number - sequence counter
                                $tnum = sprintf("%05d$dir",$chcnt);
                                # =============================================
                                $chunkh{'offset'} = $choff; # keep OFFSET
                                $chunks{$tnum} = { %chunkh }; # STORE THE CHUNK
                                $val = $chunks{$tnum}; # EXTRACT A CHUNK
                                #if (defined ${$val}{'name'} && ${$val}{'node'}) { # && ${$val}{'type'})
                                if (is_valid_ch_hash($val)) {
                                    $name = ${$val}{'name'}; # this can be duplicated, like
                                    $node = ${$val}{'node'}; # engine[0], engine[1]...
                                    if ($name eq $chname) {
                                        # this is NOT a duplicate
                                    } else {
                                        # prt("$chname $name\n");
                                        ${$val}{'name'} = $chname; # use UNIQUE name i/o 'variable'
                                    }
                                    #${$val}{"_".$name."_"} = $node; # var name -> property nodes
                                    #${$val}{"$node"} = $name; # property node -> name
                                } else {
                                    prt("Bad?: ");
                                    foreach $key (keys %{$val}) {
                                        $val = ${$val}{$key};
                                        prt("[$key]=$val ");
                                    }
                                    prt("\n");
                                    pgm_exit(1,"WHAT, an INVALID chunk ref!\n");
                                }
                                # =============================================
                                foreach $key (keys %chunkh) {
                                    $val = $chunkh{$key};
                                    prt("[$key]=$val ") if ($dbg_pb01);
                                }
                                # prt("$chunk");
                                prt("\n") if ($dbg_pb01);
                                $chunk = '';
                                $inch = 0;
                                %chunkh = ();
                            } elsif ($tag eq '/format') {
                                # various special formats
                            } elsif ($tag eq '/node') {
                                $chnode = $txt;
                                if (length($txt)) {
                                    if (defined ${$rnodes}{$txt}) {
                                        $nodcnt = 0;
                                        if (defined $nnodes{$txt}) {
                                            $nodcnt = $nnodes{$txt};
                                        }
                                        $nodcnt++;
                                        $nxttxt = $txt.sprintf("%d",$nodcnt);
                                        ${$rnodes}{$nxttxt} = $chcnt;
                                        prtw("Duplicated 'node' [$txt] cnt $nxttxt $where\n"); # if ($show_duplications);
                                        $nnodes{$txt} = $nodcnt;
                                    } else {
                                        ${$rnodes}{$txt} = $chcnt;
                                    }
                                }
                            } elsif ($tag eq '/name') {
                                $chname = $txt;
                                if (length($txt)) {
                                    if ( defined ${$rnames}{$txt} ) {
                                        $namcnt = 0;
                                        if (defined $nnames{$txt}) {
                                            $namcnt = $nnames{$txt}
                                        }
                                        $namcnt++;
                                        $nxttxt = $txt.sprintf("%d",$namcnt);
                                        ${$rnames}{$nxttxt} = $chcnt;
                                        $chname = $nxttxt; # update the CHUNK (unique) name
                                        prt("Duplicated 'name' [$txt] cnt $nxttxt $where\n") if ($show_duplications);
                                        $nnames{$txt} = $namcnt;
                                    } else {
                                        ${$rnames}{$txt} = $chcnt;
                                    }
                                }
                            } elsif ($tag eq '/type') {
                                $chtype = $txt;
                                if (length($txt)) {
                                    ${$rtypes}{$txt} = $chcnt;
                                }
                            }
                        } else {
                            $type = 'open';
                            # closing another tag, within a chunk
                            $chunk .= "$txt " if (length($txt));
                            $chunk .= "[$tag] ";
                            #prt("[$txt] [$tag] ");
                            $lasttag = $tag;
                        }
                    } else {
                        if ($tag eq 'chunk') {
                            $inch = 1;
                            $chcnt++;
                            $choff++; # BUMP OFFSET of chunk in list
                        }
                    }
                    if ($tag eq 'output') {
                        $inoutput = 1;
                        $rnames = \%onames;
                        $rtypes = \%otypes;
                        $rnodes = \%onodes;
                        #$rca = \@chunkrefso;
                        $where = 'output';
                        $dir = 'o';
                        $choff = 0; # restart OFFSET of chunk in list
                    } elsif ($tag eq '/output') {
                        $inoutput = 0;
                        $rnames = \%nnames;
                        $rtypes = \%ntypes;
                        $rnodes = \%nnodes;
                        #$rca = \@nochunks;
                        $where = 'nowhereo';
                        $dir = 'n';
                        %nnames = ();
                        %ntypes = ();
                        %nnodes = ();
                        $choff = 0;
                    } elsif ($tag eq 'input') {
                        $ininput = 1;
                        $rnames = \%inames;
                        $rtypes = \%itypes;
                        $rnodes = \%inodes;
                        #$rca = \@chunkrefsi;
                        $where = 'input';
                        $dir = 'i';
                        $choff = 0; # restart OFFSET of chunk in list
                    } elsif ($tag eq '/input') {
                        $ininput = 0;
                        $rnames = \%nnames;
                        $rtypes = \%ntypes;
                        $rnodes = \%nnodes;
                        #$rca = \@nochunks;
                        $where = 'nowherei';
                        $dir = 'n';
                        %nnames = ();
                        %ntypes = ();
                        %nnodes = ();
                        $choff = 0;
                    }
                    $intag = 0;
                    $tag = '';
                    $txt = '';
                } else {
                    $tag .= $ch;
                }
            } else {
                if ($ch eq '<') {
                    $intag = 1;
                    $tag = '';
                } else {
                    $txt .= $ch;
                }
            }
        } # process the line
        $txt .= " " if (length($txt) && ($txt =~ /\S$/));
    }
    prt("Done $chcnt chunks...\n");
    $chunks{'ONAMES'} = { %onames };
    $chunks{'ONODES'} = { %onodes };
    $chunks{'OTYPES'} = { %otypes };
    $chunks{'INAMES'} = { %inames };
    $chunks{'INODES'} = { %inodes };
    $chunks{'ITYPES'} = { %itypes };
    return \%chunks;
}

# WARNING: NF aileron o /controls/flight/aileron[0] = NOT FOUND
# WARNING: NF aileron i /controls/flight/aileron = NOT FOUND
sub nodes_are_equiv($$) {
    my ($n1,$n2) = @_;
    return 1 if ($n1 eq $n2);
    $n1 =~ s/\[0\]//;
    $n2 =~ s/\[0\]//;
    return 1 if ($n1 eq $n2);
    return 0;
}

sub prt_name_node_dir($$$$$) {
    my ($name,$node,$dir,$kn1,$kn2) = @_;
    $name .= ' ' while (length($name) < $min_name_len);
    $node .= ' ' while (length($node) < $min_node_len);
    my $len = length($previous_node);
    my $lstsep = 0;
    my ($i,$ch);
    for ($i = 0; $i < $len; $i++) {
        $ch = substr($node,$i,1);
        last if (substr($previous_node,$i,1) ne $ch);
        $lstsep = $i if ($ch eq '/');
    }
    $previous_node = $node;
    if ($lstsep && $use_blanked_path) {
        my $tmp = '';
        for ($i = 0; $i < $lstsep; $i++) {
            $tmp .= ' ';
        }
        $tmp .= substr($node,$lstsep);
        $node = $tmp;
    }
    $ch = "$kn1";
    $ch .= "/$kn2" if ($kn2);
    prt( "$name = [$node] $dir $ch\n");
}

sub show_ref_hash($) {
    my ($rh) = @_; # = $ref_hash
    my ($key,$val,$k2,$v2,$ncnt,$name,$dir,@arr,$node,$msg,$type,$len,$i,$tmp,$ch);
    my ($mhd,$ci,$rnh,$c2,$ky2,$di2,$fnd,$na2,$nod2);
    my ($knum,$kn2,$offs);
    my @names = qw( NAMES NODES TYPES ); # by 2 output/input
    my @chunkkeys = sort keys %{$rh};
    my $chcnt = scalar @chunkkeys;
    my %onames = ();
    my %inames = ();
    my @nodes = ();
    my %done = ();
    # go through the chunks collected, and try to match
    # an INPUT with an OUTPUT - should 100% match!
    for ($ci = 0; $ci < $chcnt; $ci++) {
        $key = $chunkkeys[$ci]; # this is order in the file - they were grouped
        if ($key =~ /^(\d+)(i|o|n)$/) {
            $knum = $1;
            $dir  = $2;
            $rnh = ($dir eq 'i') ? \%inames : \%onames;
            $val = ${$rh}{$key};
            # if (defined ${$val}{'name'} && ${$val}{'node'} && ${$val}{'type'})
            if (is_valid_ch_hash($val)) {
                $name = ${$val}{'name'}; # this can be duplicated, 1, 2, ...like
                $node = ${$val}{'node'}; # engine[0], engine[1], ...
                $type = ${$val}{'type'};
                $offs = ${$val}{'offset'};
                $fnd = 0;
                for ($c2 = 0; $c2 < $chcnt; $c2++) {
                    if ($c2 != $ci) {
                        $ky2 = $chunkkeys[$c2];
                        if ($ky2 =~ /^(\d+)(i|o|n)$/) {
                            $kn2 = $1;
                            $di2 = $2;
                            if ($dir ne $di2) {
                                $v2 = ${$rh}{$ky2};
                                if (defined ${$v2}{'name'} && ${$v2}{'node'} && ${$v2}{'type'}) {
                                    $na2 = ${$v2}{'name'};
                                    $nod2 = ${$v2}{'node'};
                                    if ($name eq $na2) {
                                        if (nodes_are_equiv($node,$nod2)) {
                                            $fnd = 1;
                                            ${$v2}{'_IO_'} = $key;  # exchange keys
                                            ${$val}{'_IO_'} = $ky2;
                                            push(@nodes,$node);
                                            last;
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
                if (!$fnd) {
                    prtw("WARNING: NF $name ".(($dir eq 'i') ? "i" : "o")." $node = NOT FOUND\n");
                }
            }
        }
    }

    %done = ();
    @nodes = sort @nodes;
    foreach $nod2 (@nodes) {
        for ($ci = 0; $ci < $chcnt; $ci++) {
            $key = $chunkkeys[$ci]; # this is order in the file - they were grouped
            if ($key =~ /^(\d+)(i|o|n)$/) {
                $knum = $1;
                $dir  = $2;
                $val = ${$rh}{$key};
                next if ($done{$key});
                # if (defined ${$val}{'name'} && ${$val}{'node'} && ${$val}{'type'})
                if (is_valid_ch_hash($val)) {
                    $name = ${$val}{'name'}; # this can be duplicated, 1, 2, ...like
                    $node = ${$val}{'node'}; # engine[0], engine[1], ...
                    $type = ${$val}{'type'};
                    $offs = ${$val}{'offset'};
                    if ($node eq $nod2) {
                        if (defined ${$val}{'_IO_'}) {
                            $ky2 = ${$val}{'_IO_'};
                            $kn2 = substr($ky2,0,(length($ky2)-1));
                            $done{$ky2} = 1; # mark this as DONE
                            $done{$key} = 1;
                            $dir = "i/o";
                            prt_name_node_dir($name,$node,$dir,$knum,$kn2);
                        }
                    }
                }
            }
        }
    }
    # foreach $key (sort keys %{$rh}) - pre-sorted the list
    for ($ci = 0; $ci < $chcnt; $ci++) {
        $key = $chunkkeys[$ci]; # this is order in the file - they were grouped
        if ($key =~ /^(\d+)(i|o|n)$/) {
            $knum = $1;
            $dir  = $2;
            $val = ${$rh}{$key};
            next if ($done{$key});
            $done{$key} = 1;
            $tmp = substr($key,0,(length($key) - 1));
            $len = length($tmp);
            $msg = ''; # start output
            $mhd = $dir;
            for ($i = 0; $i < $len; $i++) {
                $ch = substr($tmp,$i,1);
                last if ($ch ne '0');
                #$msg .= ' ';
                $mhd .= '_';
            }
            for (; $i < $len; $i++) {
                $ch = substr($tmp,$i,1);
                $mhd .= $ch;
            }
            $mhd .= "_"; # header, making it unique
            # if (defined ${$val}{'name'} && ${$val}{'node'} && ${$val}{'type'}) {
            if (is_valid_ch_hash($val)) {
                $name = ${$val}{'name'};
                $node = ${$val}{'node'};
                $type = ${$val}{'type'};
                $name =~ s/-/_/g;
                $kn2 = 0;
                if (defined ${$val}{'_IO_'}) {
                    $ky2 = ${$val}{'_IO_'};
                    $kn2 = substr($ky2,0,(length($ky2)-1));
                    $done{$ky2} = 1; # mark this as DONE
                    $dir = "i/o";
                }
                prt_name_node_dir($name,$node,$dir,$knum,$kn2);

                # $msg .= $type."_";
                $name .= ' ' while (length($name) < $min_name_len);
                $node .= ' ' while (length($node) < $min_node_len);
                $msg .= $name." = [$node]";
            } else {
                $msg .= $mhd;
                foreach $k2 (sort keys %{$val}) {
                    $v2 = ${$val}{$k2};
                    $msg .= "$k2 $v2, ";
                }
                $msg .= $dir;
                prt("$msg\n");
            }
            # prt("$msg $dir\n");
        } else {
            # other keys
        }
    }

    # just show the COUNTS
    # ====================
    $msg = '';
    foreach $name (@names) {
        $key = 'O'.$name;
        if (defined ${$rh}{$key}) {
            $val = ${$rh}{$key};
            $ncnt = scalar keys(%{$val});
            $msg .= "$key $ncnt ";
        }
        $key = 'I'.$name;
        if (defined ${$rh}{$key}) {
            $val = ${$rh}{$key};
            $ncnt = scalar keys(%{$val});
            $msg .= "$key $ncnt ";
        }
    }
    prt("$msg\n") if (length($msg));
    # ====================

    if ($list_node_set) {
        $name = "NODES";
        $key = 'O'.$name;
        $msg = '';
        if (defined ${$rh}{$key}) {
            $val = ${$rh}{$key};
            @arr = sort keys(%{$val});
            $v2 = '';
            foreach $node (@arr) {
                $msg .= "$node\n";
            }
        }
        prt("$msg\n") if (length($msg));
    }
}

# given an offset, find the chunk ref hash
# of course, will only find the first, if more than one
sub find_chunk_obj_by_off($$$) {
    my ($rh,$i2,$rval) = @_;
    my ($key,$val,$off);
    foreach $key (keys %{$rh}) {
        $val = ${$rh}{$key};
        if (defined ${$val}{'offset'}) {
            $off = ${$val}{'offset'};
            if ($off == $i2) {
                ${$rval} = $val; # pass back the chunk hash - name, path, etc...
                return 1;
            }
        }
    }
    return 0;
}

# given a name, find the chunk ref hash
sub find_chunk_by_name($$$) {
    my ($rh,$name,$rval) = @_;
    my ($key,$val,$n2);
    foreach $key (keys %{$rh}) {
        $val = ${$rh}{$key};
        if (defined ${$val}{'name'}) {
            $n2 = ${$val}{'name'};
            if ($n2 eq $name) {
                ${$rval} = $val; # pass back the chunk hash - name, path, etc...
                return 1;
            }
        }
    }
    return 0;
}


my %missed_names = ();

sub get_item_val_by_name($$$$$) {
    my ($rh,$cols,$rcurr,$name,$rval) = @_;
    my ($val,$off);
    if (find_chunk_by_name($rh,$name,\$val)) {
        if (is_valid_ch_hash($val)) {
            # is valid
            $off = ${$val}{'offset'} - 1; # OFFSET
            ${$rval} = ${$rcurr}[$off];
            return 1;
        } else {
            if (!defined $missed_names{$name}) {
                $missed_names{$name} = 1;
                prtw("WARNING: Failed finding [$name]\n");
            }
        }
    } else {
        if (!defined $missed_names{$name}) {
            $missed_names{$name} = 1;
            prtw("WARNING: Missed finding [$name]\n");
        }
    }
    return 0;
}

my %ch_name2offset = ();

my $g_shwn_roll = -1;
my $g_shwn_pitch = -1;
sub get_latlonalt($$$$$$) {
    my ($rh,$cols,$rcurr,$rlat,$rlon,$ralt) = @_;
    my $name1 = 'latitude-deg';
    my $name2 = 'longitude-deg';
    my $name3 = 'altitude-ft';
    my $rn2off = \%ch_name2offset;
    my $ok = 0;
    my ($off1,$off2,$off3,$val1,$val2,$val3);
    if (defined ${$rn2off}{$name1} &&
        defined ${$rn2off}{$name2} &&
        defined ${$rn2off}{$name3} ) {
        $off1 = ${$rn2off}{$name1};
        $off2 = ${$rn2off}{$name2};
        $off3 = ${$rn2off}{$name3};
        $ok = 1;
        $g_used_of_cache++;
    } elsif ( find_chunk_by_name($rh,$name1,\$val1) &&
         find_chunk_by_name($rh,$name2,\$val2) &&
         find_chunk_by_name($rh,$name3,\$val3) ) {
        # we have hash refs to check
        if (is_valid_ch_hash($val1) &&
            is_valid_ch_hash($val2) &&
            is_valid_ch_hash($val3) ) {
            # they are valid
            $off1 = ${$val1}{'offset'} - 1; # OFFSET
            $off2 = ${$val2}{'offset'} - 1;
            $off3 = ${$val3}{'offset'} - 1;
            # we have offsets to check
            if (($off1 >= 0) && ($off1 < $cols) &&
                ($off2 >= 0) && ($off2 < $cols) &&
                ($off3 >= 0) && ($off3 < $cols) ) {
                $ok = 1;
                # offsets within range
                ${$rn2off}{$name1} = $off1;
                ${$rn2off}{$name2} = $off2;
                ${$rn2off}{$name3} = $off3;
            }
        }
    }
    if ($ok) {
        ${$rlat} = ${$rcurr}[$off1];
        ${$rlon} = ${$rcurr}[$off2];
        ${$ralt} = ${$rcurr}[$off3];
    }
    return $ok;
}

sub get_latlonalt_msg($$$) {
    my ($rh,$cols,$rcurr) = @_;
    my ($lat,$lon,$alt,$msg);
    $msg = '';
    if (get_latlonalt($rh,$cols,$rcurr,\$lat,\$lon,\$alt)) {
        my $factor = 1000;
        my ($latm,$lonm,$altm);
        # $lat = ${$rcurr}[$off1];
        # $lon = ${$rcurr}[$off2];
        # $alt = ${$rcurr}[$off3];
        # $msg = "$off1:lat $lat  $off2:lon $lon  $off3:alt $alt";
        $latm = $lat * $factor;
        $latm = ($latm < 0.0) ? int($latm - 0.5) : int($latm + 0.5);
        $latm = $latm / $factor;
        $latm = " $latm" while (length($latm) < 7);
        $latm = "lat $latm ";
        $lonm = $lon * $factor;
        $lonm = ($lonm < 0.0) ? int($lonm - 0.5) : int($lonm + 0.5);
        $lonm = $lonm / $factor;
        $lonm = " $lonm" while (length($lonm) < 8);
        $lonm = "lon $lonm ";
        if ($alt < -9990) {
            $altm = 'N/A';
        } else {
            if ($alt < 0) {
                $alt = int($alt - 0.5);
            } else {
                $alt = int($alt + 0.5);
            }
            $altm = "$alt";
        }
        $altm = " $altm" while (length($altm) < 5);
        $altm = "alt $altm ";
        $msg  = "$latm $lonm $altm ";

    }
    return $msg;
}

my $blank_hdg_msgs = 0;
#heading-deg                      = [/orientation/heading-deg                        ] i/o 00054/00131
#pitch-deg                        = [            /pitch-deg                          ] i/o 00053/00130
#roll-deg                         = [            /roll-deg                           ] i/o 00052/00129
sub compare_hdgpitchroll($$$$$) {
    my ($rh,$cols,$rfirst,$rlast,$rcurr) = @_;
    my ($i,$msg,$v1,$v2,$i2);
    my ($val1,$val2,$val3,$name1,$name2,$name3);
    my ($off1,$off2,$off3,$latc,$latp,$lonc,$lonp,$altc,$altp,$ok);
    my ($latm,$lonm,$tmp,$len,$altm);
    my $rn2off = \%ch_name2offset;
    $msg = '';
    $name1 = 'heading-deg';
    $name2 = 'pitch-deg';
    $name3 = 'roll-deg';
    $ok = 0;
    if (defined ${$rn2off}{$name1} &&
        defined ${$rn2off}{$name2} &&
        defined ${$rn2off}{$name3} ) {
        $off1 = ${$rn2off}{$name1};
        $off2 = ${$rn2off}{$name2};
        $off3 = ${$rn2off}{$name3};
        $ok = 1;
        $g_used_of_cache++;
    } elsif ( find_chunk_by_name($rh,$name1,\$val1) &&
         find_chunk_by_name($rh,$name2,\$val2) &&
         find_chunk_by_name($rh,$name3,\$val3) ) {
        # we have hash refs to check
        if (is_valid_ch_hash($val1) &&
            is_valid_ch_hash($val2) &&
            is_valid_ch_hash($val3) ) {
            # they are valid
            #$name1 = ${$val1}{'name'};  # get NAME
            #$name2 = ${$val2}{'name'};
            #$name3 = ${$val3}{'name'};
            $off1 = ${$val1}{'offset'} - 1; # OFFSET
            $off2 = ${$val2}{'offset'} - 1;
            $off3 = ${$val3}{'offset'} - 1;
            # we have offsets to check
            if (($off1 >= 0) && ($off1 < $cols) &&
                ($off2 >= 0) && ($off2 < $cols) &&
                ($off3 >= 0) && ($off3 < $cols) ) {
                $ok = 1;
                # offsets within range
                ${$rn2off}{$name1} = $off1;
                ${$rn2off}{$name2} = $off2;
                ${$rn2off}{$name3} = $off3;
            }
        } else {
            pgm_exit(1,"ERROR: Have an INVALID ref chunk hash for [$name1] or [$name2] or [$name3] chunks...\n");
        }
    } else {
        pgm_exit(1,"ERROR: No find of [$name1] or [$name2] chunks...\n");
    }
    if ($ok) {
        $ok = 0;
        # hdg
        $latc = ${$rcurr}[$off1]; # compare current
        $latp = ${$rlast}[$off1]; # with previous
        # pitch
        $lonc = ${$rcurr}[$off2];
        $lonp = ${$rlast}[$off2];
        # roll
        $altc = ${$rcurr}[$off3];
        $altp = ${$rlast}[$off3];
        # get the text to display

        # heading
        $latm = int($latc + 0.5);
        $latm = ($latm < 10) ? "  $latm" : ($latm < 100) ? " $latm" : $latm;
        if (($blank_hdg_msgs > 20) || (abs($latc - $latp) > 1.0)) { # $SG_EPSILON
            $ok++; # changed
            #$latm = "$off1:hdg $latm ";
            $latm = "hdg $latm ";
            $blank_hdg_msgs = 0;
        } else {
            #$tmp = "$off1:$name1 - $latc ";
            #$tmp = "$off1:hdg $latm ";
            $tmp = "hdg $latm ";
            $len = length($tmp);
            $latm = ' ' x $len;
            $blank_hdg_msgs++;
        }
        # pitch
        # $lonc = ${$rcurr}[$off2];
        # $lonp = ${$rlast}[$off2];
        if ($lonc < 0.0) {
            $lonm = int($lonc - 0.5);
        } else {
            $lonm = int($lonc + 0.5);
        }
        $lonm = " $lonm" while (length($lonm) < 3);
        if (abs($lonc - $lonp) > 0.5) { # $SG_EPSILON
            $ok++; # changed
            #$lonm = "$off2:$name2 - $lonc ";
            #$lonm = "$off2:pitch $lonm ";
            $lonm = "pitch $lonm ";
            $g_shwn_pitch = $lonc;
        } elsif (abs($lonc - $g_shwn_pitch) > 0.5) {
            $ok++; # changed
            #$lonm = "$off2:pitch $lonm ";
            $lonm = "pitch $lonm ";
            $g_shwn_pitch = $lonc;
        } else {
            #$tmp = "$off2:$name2 - $lonc ";
            #$tmp = "$off2:pitch $lonm ";
            $tmp = "pitch $lonm ";
            $len = length($tmp);
            $lonm = ' ' x $len;
        }
        # roll
        # $altc = ${$rcurr}[$off3];
        # $altp = ${$rlast}[$off3];
        if ($altc < 0.0) {
            $altm = int($altc - 0.5);
        } else {
            $altm = int($altc + 0.5);
        }
        $altm = " $altm" while (length($altm) < 3);
        if (abs($altc - $altp) > 0.5) { # $SG_EPSILON
            $g_shwn_roll = $altc;
            $ok++;
            #$altm = "$off3:roll $altm ";
            $altm = "roll $altm ";
        } elsif (abs($altc - $g_shwn_roll) > 0.5) {
            $g_shwn_roll = $altc;
            $ok++;
            #$altm = "$off3:roll $altm ";
            $altm = "roll $altm ";
        } else {
            #$tmp = "$off3:roll $altm ";
            $tmp = "roll $altm ";
            $len = length($tmp);
            $altm = ' ' x $len;
        }

        $tmp = "$latm $lonm $altm ";
        if ($ok) {
            $msg = $tmp;
        } else {
            $len = length($tmp);
            $msg = '.' x $len;
        }
    }
    return $msg;
}


#latitude-deg                     = [         /latitude-deg                          ] i/o 00049/00126
#longitude-deg                    = [         /longitude-deg                         ] i/o 00050/00127
sub compare_latlonalt($$$$$) {
    my ($rh,$cols,$rfirst,$rlast,$rcurr) = @_;
    my ($i,$msg,$v1,$v2,$i2);
    my ($val1,$val2,$val3,$name1,$name2,$name3);
    my ($off1,$off2,$off3,$latc,$latp,$lonc,$lonp,$altc,$altp,$ok);
    my ($latm,$lonm,$tmp,$len,$altm);
    my $rn2off = \%ch_name2offset;
    my $factor = 1000;
    $msg = '';
    $name1 = 'latitude-deg';
    $name2 = 'longitude-deg';
    $name3 = 'altitude-ft';
    $ok = 0;
    if (defined ${$rn2off}{$name1} &&
        defined ${$rn2off}{$name2} &&
        defined ${$rn2off}{$name3} ) {
        $off1 = ${$rn2off}{$name1};
        $off2 = ${$rn2off}{$name2};
        $off3 = ${$rn2off}{$name3};
        $ok = 1;
        $g_used_of_cache++;
    } elsif ( find_chunk_by_name($rh,$name1,\$val1) &&
         find_chunk_by_name($rh,$name2,\$val2) &&
         find_chunk_by_name($rh,$name3,\$val3) ) {
        # we have hash refs to check
        if (is_valid_ch_hash($val1) &&
            is_valid_ch_hash($val2) &&
            is_valid_ch_hash($val3) ) {
            # they are valid
            #$name1 = ${$val1}{'name'};  # get NAME
            #$name2 = ${$val2}{'name'};
            #$name3 = ${$val3}{'name'};
            $off1 = ${$val1}{'offset'} - 1; # OFFSET
            $off2 = ${$val2}{'offset'} - 1;
            $off3 = ${$val3}{'offset'} - 1;
            # we have offsets to check
            if (($off1 >= 0) && ($off1 < $cols) &&
                ($off2 >= 0) && ($off2 < $cols) &&
                ($off3 >= 0) && ($off3 < $cols) ) {
                $ok = 1;
                # offsets within range
                ${$rn2off}{$name1} = $off1;
                ${$rn2off}{$name2} = $off2;
                ${$rn2off}{$name3} = $off3;
            }
        }
    } else {
        pgm_exit(1,"ERROR: No find of [$name1] or [$name2] chunks...\n");
    }
    if ($ok) {
        $ok = 0;
        # latitude
        $latc = ${$rcurr}[$off1]; # compare current
        $latp = ${$rlast}[$off1]; # with previous
        # longitude
        $lonc = ${$rcurr}[$off2];
        $lonp = ${$rlast}[$off2];
        # altitude
        $altc = ${$rcurr}[$off3];
        $altp = ${$rlast}[$off3];

        $latm = $latc * $factor;
        $latm = ($latm < 0.0) ? int($latm - 0.5) : int($latm + 0.5);
        $latm = $latm / $factor;
        $latm = " $latm" while (length($latm) < 7);
        if (abs($latc - $latp) > $SG_EPSILON) {
            $ok++; # changed
            #$latm = "$off1:$name1 - $latc ";
            #$latm = "$off1:lat $latm ";
            #$latm = "lat $latm ";
            $latm = "$latc";
        } else {
            #$tmp = "$off1:$name1 - $latc ";
            #$tmp = "$off1:lat $latm ";
            #$tmp = "lat $latm ";
            $tmp = "$latc";
            $len = length($tmp);
            $latm = ' ' x $len;
        }
        # longitude
        # $lonc = ${$rcurr}[$off2];
        # $lonp = ${$rlast}[$off2];
        $lonm = $lonc * $factor;
        $lonm = ($lonm < 0.0) ? int($lonm - 0.5) : int($lonm + 0.5);
        $lonm = $lonm / $factor;
        $lonm = " $lonm" while (length($lonm) < 8);
        if (abs($lonc - $lonp) > $SG_EPSILON) {
            $ok++; # changed
            #$lonm = "$off2:$name2 - $lonc ";
            #$lonm = "$off2:lon $lonm ";
            #$lonm = "lon $lonm ";
            $lonm = "$lonc";
        } else {
            #$tmp = "$off2:$name2 - $lonc ";
            #$tmp = "$off2:lon $lonm ";
            #$tmp = "lon $lonm ";
            $tmp = "$lonc";
            $len = length($tmp);
            $lonm = ' ' x $len;
        }
        #########################################################
        # altitude
        # $altc = ${$rcurr}[$off3];
        # $altp = ${$rlast}[$off3];
        if ($altc < 0) {
            if ($altc < -9990) {
                $altc = int($altc - 0.5);
                $altm = "n/a";
            } else {
                $altc = int($altc - 0.5);
                $altm = "$altc";
            }
        } else {
            $altc = int($altc + 0.5);
            $altm = "$altc";
        }
        $altm = " $altm" while (length($altm) < 5);
        if ($altp < 0) {
            $altp = int($altp - 0.5);
        } else {
            $altp = int($altp + 0.5);
        }
        if (abs($altc - $altp) > $SG_EPSILON) {
            #$altm = "$off3:alt $altm ";
            #$altm = "alt $altm ";
            #$altm = "$altm ";
            $altm = "$altm";
            $ok++;
        } else {
            #$tmp = "$off3:alt $altm ";
            #$tmp = "alt $altm ";
            #$tmp = "$altm ";
            $tmp = "$altm";
            $len = length($tmp);
            $altm = ' ' x $len;
        }
        ###########################################################
        $tmp = "$latm $lonm $altm";
        if ($ok) {
            $msg = $tmp;
        } else {
            $len = length($tmp);
            $msg = '.' x $len;
        }
    }
    return $msg;
}

# passed the chunk ref hash, and
# the first, last, and current array of variables (from the playback file)
sub compare_arrays_test($$$$$) {
    my ($rh,$cols,$rfirst,$rlast,$rcurr) = @_;
    my ($i,$msg,$v1,$v2,$keyi,$keyo,$i2);
    my ($val,$name,$node,$type,$ok,$offs);
    $msg = '';
    for ($i = 0; $i < $cols; $i++) {
        $i2 = $i + 1;
        $v1 = ${$rcurr}[$i];
        $v2 = ${$rlast}[$i];
        $keyi = sprintf("%5d",$i2);
        $keyo = $keyi;
        $keyi .= 'i';
        $keyo .= 'o';
        $ok = 0;
        if (abs($v1 - $v2) < $SG_EPSILON) {
            # ($v1 == $v2) # skip
        } else {
            # processing by column, get the 'chunk' object at this 'offset'
            if ( find_chunk_obj_by_off($rh,$i2,\$val) ) {
                # if (defined ${$val}{'name'} && ${$val}{'node'} && ${$val}{'type'})
                if ( is_valid_ch_hash($val) ) {
                    $name = ${$val}{'name'};
                    $node = ${$val}{'node'};
                    $type = ${$val}{'type'};
                    $offs = ${$val}{'offset'};
                    $ok = 1;
                }
            }
            if ($ok) {
                $msg .= "$i:$name $v1 ($offs)";
            } else {
                $msg .= "$i - $v1 ";
            }
        }
    }
    # prt("$msg\n") if (length($msg))
    return $msg;
}

# brake-left  = [/controls/gear/brake-left] i/o 00026/00103
# brake-right = [/controls/gear/brake-right] i/o 00027/00104
sub get_brake_msg($$$$) {
    my ($rh,$cols,$rarr,$rbrmsg) = @_;
    my $name1 = 'brake-left';
    my $name2 = 'brake-right';
    my $rn2off = \%ch_name2offset;
    my $ok = 0;
    my ($off1,$off2,$val1,$val2);
    my $brmsg = ${$rbrmsg};
    if (defined ${$rn2off}{$name1} &&
        defined ${$rn2off}{$name2} ) {
        $off1 = ${$rn2off}{$name1};
        $off2 = ${$rn2off}{$name2};
        $ok = 1;
        $g_used_of_cache++;
    } elsif ( find_chunk_by_name($rh,$name1,\$val1) &&
         find_chunk_by_name($rh,$name2,\$val2) ) {
        # we have hash refs to check
        if (is_valid_ch_hash($val1) &&
            is_valid_ch_hash($val2) ) {
            # they are valid
            #$name1 = ${$val1}{'name'};  # get NAME
            #$name2 = ${$val2}{'name'};
            $off1 = ${$val1}{'offset'} - 1; # OFFSET
            $off2 = ${$val2}{'offset'} - 1;
            # we have offsets to check
            if (($off1 >= 0) && ($off1 < $cols) &&
                ($off2 >= 0) && ($off2 < $cols) ) {
                $ok = 1;
                # offsets within range
                ${$rn2off}{$name1} = $off1;
                ${$rn2off}{$name2} = $off2;
            }
        }
    } else {
        pgm_exit(1,"ERROR: No find of [$name1] or [$name2] chunks...\n");
    }
    if ($ok) {
        my $b1 = ${$rarr}[$off1];
        my $b2 = ${$rarr}[$off2];
        if ((length($brmsg) == 0) || ($brmsg =~ /^\s+$/)) {
            if (($b1 > 0) || ($b2 > 0)) {
                $brmsg = 'B';
            } else {
                $brmsg = ' ';
            }
        }
    } else {
        $brmsg = '?';
        pgm_exit(1,"ERROR: No find of [$name1] or [$name2] chunks...2\n");
    }
    ${$rbrmsg} = $brmsg; 
}

sub process_flight($$) {
    my ($rh,$inf) = @_;
    if (!open INF, "<$inf") {
        prt("ERROR: Unable to open flight file [$inf]...\n");
        return;
    }
    my @lines = <INF>;
    close INF;
    my $lncnt = scalar @lines;
    my ($line,@arr,$cols,$i,$lnn,$msg,$clnn,$val,$ok,$len);
    my $linesfnd = 0;
    prt("Processing $lncnt lines, from [$inf]...\n");
    my @first_arr = ();
    my @last_arr  = ();
    my @max_arr = ();
    my @min_arr = ();
    $lnn = 0;
    my $brmsg = '';
    my $thmsg = '';
    my $stmsg = '';
    my $hdgpr = '';
    my $cthrot = 0;
    my $pthrot = -1;
    my $last_dist_msg = '';
    my $tbgn = [gettimeofday];
    foreach $line (@lines) {
        chomp $line;
        @arr = split(/,/,$line);
        $cols = scalar @arr;
        if ($cols >= $play_cols) {
            $lnn++;
            $clnn = sprintf("%5d",$lnn);
            $ok = 0; # assume not for display
            # prepare output messages
            # brake-left  = [/controls/gear/brake-left] i/o 00026/00103
            # brake-right = [/controls/gear/brake-right] i/o 00027/00104
            get_brake_msg($rh,$cols,\@arr,\$brmsg);
            $ok |= 4 if ($brmsg eq 'B');
            if ((length($stmsg) == 0)||($stmsg =~ /^\s+$/)) {
                if (get_item_val_by_name($rh,$cols,\@arr,'starter',\$val)) {
                    if ($val > 0.0) {
                        $stmsg = "S"; # ($val)";
                        $ok |= 1;
                    } else {
                        $stmsg = " "; # ($val)";
                    }
                } else {
                    $stmsg = 'x';
                }
            }
            if (get_item_val_by_name($rh,$cols,\@arr,'throttle',\$val)) {
                if ($val <= 0.0) {
                    if (($pthrot == 0) && $linesfnd) {
                        $thmsg = ' ' x 6;
                    } else {
                        $thmsg = "closed";
                        $pthrot = 0;
                    }
                } elsif ($val >= 1.0) {
                    if (($pthrot == 100) && $linesfnd) {
                        $thmsg = ' ' x 6;
                    } else {
                        $thmsg = "full  ";
                        $pthrot = 100;
                    }
                } else {
                    # between 0 & 1 - show percentage
                    $thmsg = int(($val * 100) + 0.5);
                    if (($thmsg == $pthrot) && $linesfnd) {
                        $thmsg = ' ' x 6;
                    } else {
                        $pthrot = $thmsg;
                        $thmsg = "$thmsg\%";
                        $thmsg = " $thmsg" while (length($thmsg) < 6);
                    }
                }
                # $thmsg = "$val";
            } else {
                $thmsg = 'X' x 6;
            }
            if ($linesfnd) {
                for ($i = 0; $i < $cols; $i++) {
                    $max_arr[$i] = $arr[$i] if ($arr[$i] > $max_arr[$i]);
                    $min_arr[$i] = $arr[$i] if ($arr[$i] < $min_arr[$i]);
                }
                # compare, and show changes
                #$msg = compare_arrays_test($rh,$cols,\@first_arr,\@last_arr,\@arr);
                $hdgpr = compare_hdgpitchroll($rh,$cols,\@first_arr,\@last_arr,\@arr);
                $msg = compare_latlonalt($rh,$cols,\@first_arr,\@last_arr,\@arr);
                if (length($msg)) {
                    if ($msg =~ /^\.+$/) {
                        # no lat,lon,alt change
                    } else {
                        $ok |= 2;
                    }
                    if ($ok) {
                        my ($res,$lat1,$lon1,$alt1,$lat2,$lon2,$alt2,$sg_az1,$sg_az2,$sg_dist);
                        my $dmsg = '';
                        if (get_latlonalt($rh,$cols,\@arr,\$lat1,\$lon1,\$alt1) &&
                            get_latlonalt($rh,$cols,\@first_arr,\$lat2,\$lon2,\$alt2)) {
                            $res = fg_geo_inverse_wgs_84 ($lat1,$lon1,$lat2,$lon2,\$sg_az1,\$sg_az2,\$sg_dist);
                            #$dmsg = "home: on ".get_heading_stg($sg_az1)." at ".get_sg_dist_stg($sg_dist);
                            $dmsg = "bgn: ".get_heading_stg($sg_az1)." at ".get_sg_dist_stg($sg_dist);
                            if ($sg_dist < 200) {
                                $len = length($dmsg);
                                $dmsg = "at home (<200m)";
                                $dmsg .= ' ' while (length($dmsg) < $len);
                            }
                            if ($last_dist_msg eq $dmsg) {
                                $len = length($dmsg);
                                $dmsg = ' ' x $len;
                            } else {
                                $last_dist_msg = $dmsg;
                            }
                        }
                        prt("$clnn: $msg ${stmsg}${brmsg} $thmsg $hdgpr $dmsg\n");
                        # clear EVENT values after a display of it...
                        $stmsg = '';
                        $brmsg = '';
                    }
                }
            } else {
                @first_arr = @arr;
                @min_arr = @arr;
                @max_arr = @arr;
                prt("First with $cols columns...\n");
                $msg = get_latlonalt_msg($rh,$cols,\@arr);
                prt("$clnn: $msg $stmsg $thmsg\n") if (length($msg));
            }
            @last_arr = @arr;
            $linesfnd++;
        } else {
            pgm_exit(1,"WHAT IS THIS [$line]\n");
        }
    }
    # end of scan of lines from 'playback' file
    # =========================================
    my $elap = tv_interval( $tbgn, [gettimeofday] );
    my $htz = $lncnt / $elap;
    if ($htz > 1000) {
        $htz = int(($htz / 1000) * 10) / 10;
        $htz .= "K";
    }
    prt("Done $lncnt lines, at ${htz}Hz, from [$inf]\n");
    if ($linesfnd) {
        my $ramin = \@min_arr;
        my $ramax = \@max_arr;

        # DO MAX INFO LIST
        $brmsg = '';
        $pthrot = -1;
        get_brake_msg($rh,$cols,$ramax,\$brmsg);
        if (get_item_val_by_name($rh,$cols,$ramax,'starter',\$val)) {
            if ($val > 0.0) {
                $stmsg = "S"; # ($val)";
            } else {
                $stmsg = " "; # ($val)";
            }
        } else {
            $stmsg = 'x';
        }
        if (get_item_val_by_name($rh,$cols,$ramax,'throttle',\$val)) {
            if ($val <= 0.0) {
                if (($pthrot == 0) && $linesfnd) {
                    $thmsg = ' ' x 6;
                } else {
                    $thmsg = "closed";
                    $pthrot = 0;
                }
            } elsif ($val >= 1.0) {
                if (($pthrot == 100) && $linesfnd) {
                    $thmsg = ' ' x 6;
                } else {
                    $thmsg = "full  ";
                    $pthrot = 100;
                }
            } else {
                # between 0 & 1 - show percentage
                $thmsg = int(($val * 100) + 0.5);
                if (($thmsg == $pthrot) && $linesfnd) {
                    $thmsg = ' ' x 6;
                } else {
                    $pthrot = $thmsg;
                    $thmsg = "$thmsg\%";
                    $thmsg = " $thmsg" while (length($thmsg) < 6);
                }
            }
            # $thmsg = "$val";
        } else {
            $thmsg = 'X' x 6;
        }
        $hdgpr = compare_hdgpitchroll($rh,$cols,\@first_arr,$ramin,$ramax);
        $msg = compare_latlonalt($rh,$cols,\@first_arr,$ramin,$ramax);
        prt("max  : $msg ${stmsg}${brmsg} $thmsg $hdgpr\n");

        # DO MIN INFO LIST
        $brmsg = '';
        $pthrot = -1;
        get_brake_msg($rh,$cols,$ramin,\$brmsg);
        if (get_item_val_by_name($rh,$cols,$ramin,'starter',\$val)) {
            if ($val > 0.0) {
                $stmsg = "S"; # ($val)";
            } else {
                $stmsg = " "; # ($val)";
            }
        } else {
            $stmsg = 'x';
        }
        if (get_item_val_by_name($rh,$cols,$ramin,'throttle',\$val)) {
            if ($val <= 0.0) {
                if (($pthrot == 0) && $linesfnd) {
                    $thmsg = ' ' x 6;
                } else {
                    $thmsg = "closed";
                    $pthrot = 0;
                }
            } elsif ($val >= 1.0) {
                if (($pthrot == 100) && $linesfnd) {
                    $thmsg = ' ' x 6;
                } else {
                    $thmsg = "full  ";
                    $pthrot = 100;
                }
            } else {
                # between 0 & 1 - show percentage
                $thmsg = int(($val * 100) + 0.5);
                if (($thmsg == $pthrot) && $linesfnd) {
                    $thmsg = ' ' x 6;
                } else {
                    $pthrot = $thmsg;
                    $thmsg = "$thmsg\%";
                    $thmsg = " $thmsg" while (length($thmsg) < 6);
                }
            }
            # $thmsg = "$val";
        } else {
            $thmsg = 'X' x 6;
        }
        $hdgpr = compare_hdgpitchroll($rh,$cols,\@first_arr,$ramax,$ramin);
        $msg = compare_latlonalt($rh,$cols,\@first_arr,$ramax,$ramin);
        prt("min  : $msg ${stmsg}${brmsg} $thmsg $hdgpr\n");

    }
}

#########################################
### MAIN ###
parse_args(@ARGV);
prt( "$pgmname: in [$cwd]: Hello, World...\n" );
my $ref_hash = process_in_file($in_file);
show_ref_hash($ref_hash);
process_flight($ref_hash,$in_flight);
pgm_exit(0,"Normal exit(0)");
########################################
sub give_help {
    prt("$pgmname: version 0.0.1 2010-09-11\n");
    prt("Usage: $pgmname [options] in-file\n");
    prt("Options:\n");
    prt(" --help (-h or -?) = This help, and exit 0.\n");
}
sub need_arg {
    my ($arg,@av) = @_;
    pgm_exit(1,"ERROR: [$arg] must have following argument!\n") if (!@av);
}

sub parse_args {
    my (@av) = @_;
    my ($arg,$sarg);
    while (@av) {
        $arg = $av[0];
        if ($arg =~ /^-/) {
            $sarg = substr($arg,1);
            $sarg = substr($sarg,1) while ($sarg =~ /^-/);
            if (($sarg =~ /^h/i)||($sarg eq '?')) {
                give_help();
                pgm_exit(0,"Help exit(0)");
            } else {
                pgm_exit(1,"ERROR: Invalid argument [$arg]! Try -?\n");
            }
        } else {
            $in_file = $arg;
            prt("Set input to [$in_file]\n");
        }
        shift @av;
    }

    if ((length($in_file) ==  0) && $debug_on) {
        $in_file = $def_file;
    }
    if (length($in_file) ==  0) {
        pgm_exit(1,"ERROR: No input files found in command!\n");
    }
    if (! -f $in_file) {
        pgm_exit(1,"ERROR: Unable to find in file [$in_file]! Check name, location...\n");
    }
}

# eof - template.pl