viewvc.cgi/maps/NMEA.pm

package NMEA;

use strict;
use warnings;

use Data::Dump qw/dump/;

sub hhmm {
        my $a = shift;
        if ( $a =~ m/^(\d+)(\d\d\.\d\d+)$/ ) {
                return sprintf("%1.6f", $1 + ( $2 / 60 ));
        } else {
                warn "## skipped $a\n";
                return;
        }
}

my $got_it;

sub line {
        my $self = shift;
        my $l = shift || return;

        if ( m/\$GPRMC/ ) {
                chomp;
                my @a = split(/,/,$_);

#               next unless $#a == 12;

                warn "## [$#a] ", join(' ',
                        map { "$_:$a[$_]" }
                        ( 0 .. $#a )
                ), " from $_\n";

                # is valid?
                return unless $a[2] eq 'A';

                my $hash;
                my $i = 1; # skip GPRMC;
                $hash->{$_} = $a[$i++] foreach ( qw/
                        time validity lat_hhmm lat_ns lon_hhmm lon_ew speed course date var var_ew
                / );

                $hash->{lat} = hhmm( ( $hash->{lat_ns} eq 'S' ? -1 : 1 ) * $hash->{lat_hhmm} ) || return;
                $hash->{lon} = hhmm( ( $hash->{lon_ns} eq 'W' ? -1 : 1 ) * $hash->{lon_hhmm} ) || return;

                return if ( $got_it->{ $hash->{lat} . ' ' . $hash->{lon} }++ );

                warn "##>>>> ",dump( $hash );
                return $hash;
        }

        return;
}

1;
1	dpavlin	14	package NMEA;
2
3			use strict;
4			use warnings;
5
6			use Data::Dump qw/dump/;
7
8			sub hhmm {
9			my $a = shift;
10			if ( $a =~ m/^(\d+)(\d\d\.\d\d+)$/ ) {
11			return sprintf("%1.6f", $1 + ( $2 / 60 ));
12			} else {
13			warn "## skipped $a\n";
14			return;
15			}
16			}
17
18			my $got_it;
19
20			sub line {
21			my $self = shift;
22			my $l = shift \|\| return;
23
24			if ( m/\$GPRMC/ ) {
25			chomp;
26			my @a = split(/,/,$_);
27
28			# next unless $#a == 12;
29
30			warn "## [$#a] ", join(' ',
31			map { "$_:$a[$_]" }
32			( 0 .. $#a )
33			), " from $_\n";
34
35			# is valid?
36			return unless $a[2] eq 'A';
37
38			my $hash;
39			my $i = 1; # skip GPRMC;
40			$hash->{$_} = $a[$i++] foreach ( qw/
41			time validity lat_hhmm lat_ns lon_hhmm lon_ew speed course date var var_ew
42			/ );
43
44			$hash->{lat} = hhmm( ( $hash->{lat_ns} eq 'S' ? -1 : 1 ) * $hash->{lat_hhmm} ) \|\| return;
45			$hash->{lon} = hhmm( ( $hash->{lon_ns} eq 'W' ? -1 : 1 ) * $hash->{lon_hhmm} ) \|\| return;
46
47			return if ( $got_it->{ $hash->{lat} . ' ' . $hash->{lon} }++ );
48
49			warn "##>>>> ",dump( $hash );
50			return $hash;
51			}
52
53			return;
54			}
55
56			1;