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package PlotCalendar::DateDesc; |
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use strict; |
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use vars qw($VERSION @ISA @EXPORT @EXPORT_OK); |
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require Exporter; |
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@ISA = qw(Exporter); |
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# Items to export into callers namespace by default. Note: do not export |
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# names by default without a very good reason. Use EXPORT_OK instead. |
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# Do not simply export all your public functions/methods/constants. |
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@EXPORT = qw( getdates getdom); |
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$VERSION = sprintf "%d.%02d", q$Revision: 1.0 $ =~ m#(\d+)\.(\d+)#; |
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use Carp; |
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use PlotCalendar::DateTools qw(Add_Delta_Days Day_of_Week Day_of_Year Days_in_Month Decode_Day_of_Week Day_of_Week_to_Text Month_to_Text); |
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sub new { |
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my $proto = shift; |
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my $class = ref($proto) || $proto; |
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my $self = {}; |
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# Values to apply to all cells |
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$self->{MONTH} = shift; # Month (1-12) |
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$self->{YEAR} = shift; # 4 digit (yes, we are y2k compliant) |
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bless $self, $class; |
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return $self; |
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} |
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# **************************************************************** |
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sub getdates { |
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my $self = shift; |
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my $desc = shift; |
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my @doms = parse_desc($self,$desc); |
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my $mm = $self->{MONTH}; |
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my $yy = $self->{YEAR}; |
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my @dates = map {$mm . "/" . $_ . "/" . $yy} @doms; |
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return \@dates |
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} |
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# **************************************************************** |
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sub getdom { |
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my $self = shift; |
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my $desc = shift; |
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my @doms = parse_desc($self,$desc); |
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return \@doms; |
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} |
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# **************************************************************** |
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sub parse_desc { |
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# parse the descriptions |
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my $self = shift; |
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my $desc = shift; |
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my %ords = ( 'first' => '0', |
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'second' => '1', |
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'third' => '2', |
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'fourth' => '3', |
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'fifth' => '4', |
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'last' => '-1', |
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); |
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my @doms; |
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my $component; |
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foreach $component ( (split(/ and /,$desc))) { # split on 'and' |
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# this is either a single dayname or a qualified dayname |
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$component =~ s/^\s*//; |
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$component =~ s/\s*$//; |
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my @desc = (split(/\s+/,$component)); |
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my @temp = days_of_month($self->{YEAR},$self->{MONTH},$desc[$#desc]); |
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if ($#desc == 0) { # just a dayname |
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push @doms,@temp; |
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} |
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else { # dayname and qualifier |
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push @doms,$temp[$ords{$desc[0]}]; |
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} |
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} |
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return @doms; |
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} |
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# **************************************************************** |
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sub days_of_month { |
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my ($yr, $mon, $dayname) = @_; |
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my $dow = Decode_Day_of_Week($dayname); |
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my $dowfirst = Day_of_Week($yr,$mon,1); |
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0
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my $days = Days_in_Month($yr,$mon); |
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0
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my @dom; |
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my $first = Add_Delta_Days($yr,$mon,1, ($dow - $dowfirst)%7); |
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$dom[0]=$first; |
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my $j=7; |
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for (my $i=7+$first;$i<=$days;$i+=7) { |
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push @dom,$first+$j; |
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$j+=7; |
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} |
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0
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return @dom; |
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110
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} |
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1; |
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__END__ |