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dpavlin |
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package NMEA; |
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use strict; |
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use warnings; |
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use Data::Dump qw/dump/; |
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sub hhmm { |
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my $a = shift; |
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if ( $a =~ m/^(\d+)(\d\d\.\d\d+)$/ ) { |
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return sprintf("%1.6f", $1 + ( $2 / 60 )); |
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} else { |
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warn "## skipped $a\n"; |
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return; |
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} |
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} |
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my $got_it; |
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dpavlin |
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my $stats; |
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dpavlin |
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dpavlin |
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sub error { |
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my ( $self, $message, $line ) = @_; |
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push @{ $stats->{errors}->{$message} }, $line; |
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} |
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sub stats { |
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my $self = shift; |
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return $stats; |
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} |
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dpavlin |
14 |
sub line { |
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my $self = shift; |
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my $l = shift || return; |
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if ( m/\$GPRMC/ ) { |
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chomp; |
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my @a = split(/,/,$_); |
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dpavlin |
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if ( $#a != 12 ) { |
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$self->error( 'invalid line length' => $_ ); |
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return; |
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} |
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dpavlin |
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dpavlin |
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# warn "## [$#a] ", join(' ', map { "$_:$a[$_]" } ( 0 .. $#a )), " from $_\n"; |
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dpavlin |
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# is valid? |
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dpavlin |
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if ( $a[2] ne 'A' ) { |
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$self->error( 'not valid' => $_ ); |
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return; |
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} |
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dpavlin |
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my $hash; |
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my $i = 1; # skip GPRMC; |
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$hash->{$_} = $a[$i++] foreach ( qw/ |
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time validity lat_hhmm lat_ns lon_hhmm lon_ew speed course date var var_ew |
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/ ); |
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$hash->{lat} = hhmm( ( $hash->{lat_ns} eq 'S' ? -1 : 1 ) * $hash->{lat_hhmm} ) || return; |
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dpavlin |
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$hash->{lon} = hhmm( ( $hash->{lon_ew} eq 'W' ? -1 : 1 ) * $hash->{lon_hhmm} ) || return; |
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dpavlin |
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dpavlin |
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if ( $got_it->{ $hash->{lat} . ' ' . $hash->{lon} }++ ) { |
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$self->error( 'duplicate line' => $_ ); |
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return; |
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} |
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dpavlin |
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dpavlin |
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foreach my $n ( qw/lat lon time speed/ ) { |
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$stats->{'min_'.$n} ||= $hash->{$n}; |
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$stats->{'max_'.$n} ||= $hash->{$n}; |
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$stats->{'min_'.$n} = $hash->{$n} if $hash->{$n} < $stats->{'min_'.$n}; |
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$stats->{'max_'.$n} = $hash->{$n} if $hash->{$n} > $stats->{'max_'.$n}; |
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} |
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dpavlin |
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$hash->{number} = $stats->{total}++; |
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dpavlin |
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# warn "##>>>> ",dump( $hash ); |
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dpavlin |
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return $hash; |
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} |
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return; |
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} |
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