#! /usr/bin/perl # Copyright (c) 2006, 2007 Manoj Srivastava <srivasta@debian.org> # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA require 5.002; package IkiWiki::Plugin::calendar; use warnings; use strict; use IkiWiki 2.00; use Time::Local; use POSIX; my %cache; my %linkcache; my $time=time; my @now=localtime($time); sub import { #{{{ hook(type => "needsbuild", id => "version", call => \&needsbuild); hook(type => "preprocess", id => "calendar", call => \&preprocess); } #}}} sub is_leap_year (@) { #{{{ my %params=@_; return ($params{year} % 4 == 0 && (($params{year} % 100 != 0) || $params{year} % 400 == 0)); } #}}} sub month_days { #{{{ my %params=@_; my $days_in_month = (31,28,31,30,31,30,31,31,30,31,30,31)[$params{month}-1]; if ($params{month} == 2 && is_leap_year(%params)) { $days_in_month++; } return $days_in_month; } #}}} sub format_month (@) { #{{{ my %params=@_; my $pagespec = $params{pages}; my $year = $params{year}; my $month = $params{month}; my $pmonth = $params{pmonth}; my $nmonth = $params{nmonth}; my $pyear = $params{pyear}; my $nyear = $params{nyear}; my @list; my $calendar="\n"; # When did this month start? my @monthstart = localtime(timelocal(0,0,0,1,$month-1,$year-1900)); my $future_dom = 0; my $today = 0; if ($year == $now[5]+1900 && $month == $now[4]+1) { $future_dom = $now[3]+1; $today = $now[3]; } # Find out month names for this, next, and previous months my $monthname=POSIX::strftime("%B", @monthstart); my $pmonthname=POSIX::strftime("%B", localtime(timelocal(0,0,0,1,$pmonth-1,$pyear-1900))); my $nmonthname=POSIX::strftime("%B", localtime(timelocal(0,0,0,1,$nmonth-1,$nyear-1900))); my $archivebase = 'archives'; $archivebase = $config{archivebase} if defined $config{archivebase}; $archivebase = $params{archivebase} if defined $params{archivebase}; # Calculate URL's for monthly archives. my ($url, $purl, $nurl)=("$monthname",'',''); if (exists $cache{$pagespec}{"$year/$month"}) { $url = htmllink($params{page}, $params{destpage}, "$archivebase/$year/".sprintf("%02d", $month), linktext => " $monthname "); } add_depends($params{page}, "$archivebase/$year/".sprintf("%02d", $month)); if (exists $cache{$pagespec}{"$pyear/$pmonth"}) { $purl = htmllink($params{page}, $params{destpage}, "$archivebase/$pyear/" . sprintf("%02d", $pmonth), linktext => " $pmonthname "); } add_depends($params{page}, "$archivebase/$pyear/".sprintf("%02d", $pmonth)); if (exists $cache{$pagespec}{"$nyear/$nmonth"}) { $nurl = htmllink($params{page}, $params{destpage}, "$archivebase/$nyear/" . sprintf("%02d", $nmonth), linktext => " $nmonthname "); } add_depends($params{page}, "$archivebase/$nyear/".sprintf("%02d", $nmonth)); # Start producing the month calendar $calendar=<<EOF; <table class="month-calendar"> <caption class="month-calendar-head"> $purl $url $nurl </caption> <tr> EOF # Suppose we want to start the week with day $week_start_day # If $monthstart[6] == 1 my $week_start_day = $params{week_start_day}; my $start_day = 1 + (7 - $monthstart[6] + $week_start_day) % 7; my %downame; my %dowabbr; for my $dow ($week_start_day..$week_start_day+6) { my @day=localtime(timelocal(0,0,0,$start_day++,$month-1,$year-1900)); my $downame = POSIX::strftime("%A", @day); my $dowabbr = POSIX::strftime("%a", @day); $downame{$dow % 7}=$downame; $dowabbr{$dow % 7}=$dowabbr; $calendar.= qq{\t\t<th class="month-calendar-day-head $downame">$dowabbr</th>\n}; } $calendar.=<<EOF; </tr> EOF my $wday; # we start with a week_start_day, and skip until we get to the first for ($wday=$week_start_day; $wday != $monthstart[6]; $wday++, $wday %= 7) { $calendar.=qq{\t<tr>\n} if $wday == $week_start_day; $calendar.=qq{\t\t<td class="month-calendar-day-noday $downame{$wday}"> </td>\n}; } # At this point, either the first is a week_start_day, in which case # nothing has been printed, or else we are in the middle of a row. for (my $day = 1; $day <= month_days(year => $year, month => $month); $day++, $wday++, $wday %= 7) { # At tihs point, on a week_start_day, we close out a row, # and start a new one -- unless it is week_start_day on the # first, where we do not close a row -- since none was started. if ($wday == $week_start_day) { $calendar.=qq{\t</tr>\n} unless $day == 1; $calendar.=qq{\t<tr>\n}; } my $tag; my $mtag = sprintf("%02d", $month); if (defined $cache{$pagespec}{"$year/$mtag/$day"}) { if ($day == $today) { $tag='month-calendar-day-this-day'; } else { $tag='month-calendar-day-link'; } $calendar.=qq{\t\t<td class="$tag $downame{$wday}">}; $calendar.=htmllink($params{page}, $params{destpage}, pagename($linkcache{"$year/$mtag/$day"}), "linktext" => "$day"); push @list, pagename($linkcache{"$year/$mtag/$day"}); $calendar.=qq{</td>\n}; } else { if ($day == $today) { $tag='month-calendar-day-this-day'; } elsif ($day == $future_dom) { $tag='month-calendar-day-future'; } else { $tag='month-calendar-day-nolink'; } $calendar.=qq{\t\t<td class="$tag $downame{$wday}">$day</td>\n}; } } # finish off the week for (; $wday != $week_start_day; $wday++, $wday %= 7) { $calendar.=qq{\t\t<td class="month-calendar-day-noday $downame{$wday}"> </td>\n}; } $calendar.=<<EOF; </tr> </table> EOF # Add dependencies to update the calendar whenever pages # matching the pagespec are added or removed. add_depends($params{page}, $params{pages}); # Explicitly add all currently linked pages as dependencies, so # that if they are removed, the calendar will be sure to be updated. add_depends($params{page}, join(" or ", @list)); return $calendar; } #}}} sub format_year (@) { #{{{ my %params=@_; my $pagespec = $params{pages}; my $year = $params{year}; my $month = $params{month}; my $pmonth = $params{pmonth}; my $nmonth = $params{nmonth}; my $pyear = $params{pyear}; my $nyear = $params{nyear}; my $calendar="\n"; my $future_month = 0; $future_month = $now[4]+1 if ($year == $now[5]+1900); my $archivebase = 'archives'; $archivebase = $config{archivebase} if defined $config{archivebase}; $archivebase = $params{archivebase} if defined $params{archivebase}; # calculate URL's for previous and next years my ($url, $purl, $nurl)=("$year",'',''); if (exists $cache{$pagespec}{"$year"}) { $url = htmllink($params{page}, $params{destpage}, "$archivebase/$year", linktext => "$year"); } add_depends($params{page}, "$archivebase/$year"); if (exists $cache{$pagespec}{"$pyear"}) { $purl = htmllink($params{page}, $params{destpage}, "$archivebase/$pyear", linktext => "\←"); } add_depends($params{page}, "$archivebase/$pyear"); if (exists $cache{$pagespec}{"$nyear"}) { $nurl = htmllink($params{page}, $params{destpage}, "$archivebase/$nyear", linktext => "\→"); } add_depends($params{page}, "$archivebase/$nyear"); # Start producing the year calendar $calendar=<<EOF; <table class="year-calendar"> <caption class="year-calendar-head"> $purl $url $nurl </caption> <tr> <th class="year-calendar-subhead" colspan="$params{months_per_row}">Months</th> </tr> EOF for ($month = 1; $month <= 12; $month++) { my @day=localtime(timelocal(0,0,0,15,$month-1,$year-1900)); my $murl; my $monthname = POSIX::strftime("%B", @day); my $monthabbr = POSIX::strftime("%b", @day); $calendar.=qq{\t<tr>\n} if ($month % $params{months_per_row} == 1); my $tag; my $mtag=sprintf("%02d", $month); if ($month == $params{month}) { if ($cache{$pagespec}{"$year/$mtag"}) { $tag = 'this_month_link'; } else { $tag = 'this_month_nolink'; } } elsif ($cache{$pagespec}{"$year/$mtag"}) { $tag = 'month_link'; } elsif ($future_month && $month >= $future_month) { $tag = 'month_future'; } else { $tag = 'month_nolink'; } if ($cache{$pagespec}{"$year/$mtag"}) { $murl = htmllink($params{page}, $params{destpage}, "$archivebase/$year/$mtag", linktext => "$monthabbr"); $calendar.=qq{\t<td class="$tag">}; $calendar.=$murl; $calendar.=qq{\t</td>\n}; } else { $calendar.=qq{\t<td class="$tag">$monthabbr</td>\n}; } add_depends($params{page}, "$archivebase/$year/$mtag"); $calendar.=qq{\t</tr>\n} if ($month % $params{months_per_row} == 0); } $calendar.=<<EOF; </table> EOF return $calendar; } #}}} sub preprocess (@) { #{{{ my %params=@_; $params{pages} = "*" unless defined $params{pages}; $params{type} = "month" unless defined $params{type}; $params{month} = sprintf("%02d", $params{month}) if defined $params{month}; $params{week_start_day} = 0 unless defined $params{week_start_day}; $params{months_per_row} = 3 unless defined $params{months_per_row}; if (! defined $params{year} || ! defined $params{month}) { # Record that the calendar next changes at midnight. $pagestate{$params{destpage}}{calendar}{nextchange}=($time + (60 - $now[0]) # seconds + (59 - $now[1]) * 60 # minutes + (23 - $now[2]) * 60 * 60 # hours ); $params{year} = 1900 + $now[5] unless defined $params{year}; $params{month} = 1 + $now[4] unless defined $params{month}; } else { delete $pagestate{$params{destpage}}{calendar}; } # Calculate month names for next month, and previous months my $pmonth = $params{month} - 1; my $nmonth = $params{month} + 1; my $pyear = $params{year} - 1; my $nyear = $params{year} + 1; # Adjust for January and December if ($params{month} == 1) { $pmonth = 12; $pyear--; } if ($params{month} == 12) { $nmonth = 1; $nyear++; } $params{pmonth}=$pmonth; $params{nmonth}=$nmonth; $params{pyear} =$pyear; $params{nyear} =$nyear; my $calendar="\n"; my $pagespec=$params{pages}; my $page =$params{page}; if (! defined $cache{$pagespec}) { foreach my $p (keys %pagesources) { next unless pagespec_match($p, $pagespec); my $mtime = $IkiWiki::pagectime{$p}; my $src = $pagesources{$p}; my @date = localtime($mtime); my $mday = $date[3]; my $month = $date[4] + 1; my $year = $date[5] + 1900; my $mtag = sprintf("%02d", $month); # Only one posting per day is being linked to. $linkcache{"$year/$mtag/$mday"} = "$src"; $cache{$pagespec}{"$year"}++; $cache{$pagespec}{"$year/$mtag"}++; $cache{$pagespec}{"$year/$mtag/$mday"}++; } } if ($params{type} =~ /month/i) { $calendar=format_month(%params); } elsif ($params{type} =~ /year/i) { $calendar=format_year(%params); } return "\n<div><div class=\"calendar\">$calendar</div></div>\n"; } #}} sub needsbuild (@) { #{{{ my $needsbuild=shift; foreach my $page (keys %pagestate) { if (exists $pagestate{$page}{calendar}{nextchange}) { if ($pagestate{$page}{calendar}{nextchange} <= $time) { # force a rebuild so the calendar shows # the current day push @$needsbuild, $pagesources{$page}; } if (exists $pagesources{$page} && grep { $_ eq $pagesources{$page} } @$needsbuild) { # remove state, will be re-added if # the calendar is still there during the # rebuild delete $pagestate{$page}{calendar}; } } } } # }}} 1