X-Git-Url: https://git.donarmstrong.com/?p=deb_pkgs%2Flibhtml-calendarmonth-perl.git;a=blobdiff_plain;f=1.25%2Flib%2FHTML%2FCalendarMonth%2FDateTool%2FDateCalc.pm;fp=1.25%2Flib%2FHTML%2FCalendarMonth%2FDateTool%2FDateCalc.pm;h=38cbcbb3869b7bcacb585f0e90081ffbe49ce3c2;hp=0000000000000000000000000000000000000000;hb=1a48ee7ffa0db08c3c5af68b365ee274acbd485d;hpb=2a7fc55a2e563096c7348a2f6272a16830561513

diff --git a/1.25/lib/HTML/CalendarMonth/DateTool/DateCalc.pm b/1.25/lib/HTML/CalendarMonth/DateTool/DateCalc.pm
new file mode 100644
index 0000000..38cbcbb
--- /dev/null
+++ b/1.25/lib/HTML/CalendarMonth/DateTool/DateCalc.pm
@@ -0,0 +1,68 @@
+package HTML::CalendarMonth::DateTool::DateCalc;
+BEGIN {
+  $HTML::CalendarMonth::DateTool::DateCalc::VERSION = '1.25';
+}
+
+# Interface to Date::Calc
+
+use strict;
+use warnings;
+use Carp;
+
+use base qw( HTML::CalendarMonth::DateTool );
+
+use Date::Calc qw(
+  Days_in_Month
+  Day_of_Week
+  Add_Delta_Days
+  Weeks_in_Year
+  Week_of_Year
+  Week_Number
+  Mktime
+);
+
+sub dow1st_and_lastday {
+  my($self, $month, $year) = @_;
+  $month ||= $self->month;
+  $year  ||= $self->year;
+  ($self->dow(1), Days_in_Month($year, $month));
+}
+
+sub day_epoch {
+  my($self, $day, $month, $year) = @_;
+  $month ||= $self->month;
+  $year  ||= $self->year;
+  Mktime($year, $month, $day, 0, 0, 0);
+}
+
+sub dow {
+  my($self, $day, $month, $year) = @_;
+  $day || croak "day required.\n";
+  $month ||= $self->month;
+  $year  ||= $self->year;
+  # Date::Calc uses 1..7 as indicies in the week, starting with Monday.
+  # Convert to 0..6, starting with Sunday.
+  Day_of_Week($year, $month, $day) % 7;
+}
+
+sub add_days {
+  my($self, $delta, $day, $month, $year) = @_;
+  defined $delta || croak "delta (in days) required.\n";
+  $day   || croak "day required.\n";
+  $month ||= $self->month;
+  $year  ||= $self->year;
+  my($y, $m, $d) = Add_Delta_Days($year, $month, $day, $delta);
+  ($d, $m, $y);
+}
+
+sub week_of_year {
+  my($self, $day, $month, $year) = @_;
+  $day || croak "day required.\n";
+  $month ||= $self->month;
+  $year  ||= $self->year;
+  my $week;
+  ($week, $year) = Week_of_Year($year, $month, $day);
+  ($year, $week);
+}
+
+1;