ikiwiki/IkiWiki/Plugin/calendar.pm

733 lines
21 KiB
Perl

#!/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
require 5.002;
package IkiWiki::Plugin::calendar;
use warnings;
use strict;
use IkiWiki 3.00;
use Time::Local;
my $time=time;
my @now=localtime($time);
my %changed;
sub import {
hook(type => "checkconfig", id => "calendar", call => \&checkconfig);
hook(type => "getsetup", id => "calendar", call => \&getsetup);
hook(type => "needsbuild", id => "calendar", call => \&needsbuild);
hook(type => "preprocess", id => "calendar", call => \&preprocess);
hook(type => "scan", id => "calendar", call => \&scan);
hook(type => "build_affected", id => "calendar", call => \&build_affected);
IkiWiki::loadplugin("transient");
}
sub getsetup () {
return
plugin => {
safe => 1,
rebuild => undef,
section => "widget",
},
archivebase => {
type => "string",
example => "archives",
description => "base of the archives hierarchy",
safe => 1,
rebuild => 1,
},
archive_pagespec => {
type => "pagespec",
example => "page(posts/*) and !*/Discussion",
description => "PageSpec of pages to include in the archives, if option `calendar_autocreate` is true.",
link => 'ikiwiki/PageSpec',
safe => 1,
rebuild => 0,
},
calendar_autocreate => {
type => "boolean",
example => 1,
description => "autocreate new calendar pages?",
safe => 1,
rebuild => undef,
},
calendar_fill_gaps => {
type => "boolean",
example => 1,
default => 1,
description => "if set, when building calendar pages, also build pages of year and month when no pages were published (building empty calendars).",
safe => 1,
rebuild => 0,
},
}
sub checkconfig () {
if (! defined $config{calendar_autocreate}) {
$config{calendar_autocreate} = defined $config{archivebase};
}
if (! defined $config{archive_pagespec}) {
$config{archive_pagespec} = '*';
}
if (! defined $config{archivebase}) {
$config{archivebase} = 'archives';
}
if (! defined $config{calendar_fill_gaps}) {
$config{calendar_fill_gaps} = 1;
}
}
sub is_leap_year (@) {
my %params=@_;
return ($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 $days_in_month;
}
sub build_affected {
my %affected;
my ($ayear, $amonth, $valid);
foreach my $year (keys %changed) {
($ayear, $valid) = nextyear($year, $config{archivebase});
$affected{calendarlink($ayear)} = sprintf(gettext("building calendar for %s, its previous or next year has changed"), $ayear) if ($valid);
($ayear, $valid) = previousyear($year, $config{archivebase});
$affected{calendarlink($ayear)} = sprintf(gettext("building calendar for %s, its previous or next year has changed"), $ayear) if ($valid);
foreach my $month (keys %{$changed{$year}}) {
($ayear, $amonth, $valid) = nextmonth($year, $month, $config{archivebase});
$affected{calendarlink($ayear, sprintf("%02d", $amonth))} = sprintf(gettext("building calendar for %s/%s, its previous or next month has changed"), $amonth, $ayear) if ($valid);
($ayear, $amonth, $valid) = previousmonth($year, $month, $config{archivebase});
$affected{calendarlink($ayear, sprintf("%02d", $amonth))} = sprintf(gettext("building calendar for %s/%s, its previous or next month has changed"), $amonth, $ayear) if ($valid);
}
}
return %affected;
}
sub autocreate {
my ($page, $pagefile, $year, $month) = @_;
my $message=sprintf(gettext("creating calendar page %s"), $page);
debug($message);
my $template;
if (defined $month) {
$template=template("calendarmonth.tmpl");
} else {
$template=template("calendaryear.tmpl");
}
$template->param(year => $year);
$template->param(month => $month) if defined $month;
$template->param(pagespec => $config{archive_pagespec});
my $dir = $IkiWiki::Plugin::transient::transientdir;
writefile($pagefile, $dir, $template->output);
}
sub calendarlink($;$) {
my ($year, $month) = @_;
if (defined $month) {
return $config{archivebase} . "/" . $year . "/" . $month;
} else {
return $config{archivebase} . "/" . $year;
}
}
sub gencalendarmonth{
my $year = shift;
my $month = sprintf("%02d", shift);
my $page = calendarlink($year, $month);
my $pagefile = newpagefile($page, $config{default_pageext});
add_autofile(
$pagefile, "calendar",
sub {return autocreate($page, $pagefile, $year, $month);}
);
}
sub gencalendaryear {
my $year = shift;
my %params = @_;
# Building year page
my $page = calendarlink($year);
my $pagefile = newpagefile($page, $config{default_pageext});
add_autofile(
$pagefile, "calendar",
sub {return autocreate($page, $pagefile, $year);}
);
if (not exists $wikistate{calendar}{minyear}) {
$wikistate{calendar}{minyear} = $year;
}
if (not exists $wikistate{calendar}{maxyear}) {
$wikistate{calendar}{maxyear} = $year;
}
if ($config{calendar_fill_gaps}) {
# Building month pages
foreach my $month (1 .. 12) {
gencalendarmonth($year, $month);
}
# Filling potential gaps in years (e.g. calendar goes from 2010 to 2014,
# and we just added year 2005. We have to add years 2006 to 2009).
return if $params{norecurse};
if ($wikistate{calendar}{minyear} > $year) {
foreach my $other ($year + 1 .. $wikistate{calendar}{minyear} - 1) {
gencalendaryear($other, norecurse => 1);
}
$wikistate{calendar}{minyear} = $year;
}
if ($wikistate{calendar}{maxyear} < $year) {
foreach my $other ($wikistate{calendar}{maxyear} + 1 .. $year - 1) {
gencalendaryear($other, norecurse => 1);
}
$wikistate{calendar}{maxyear} = $year;
}
}
if ($year < $wikistate{calendar}{minyear}) {
$wikistate{calendar}{minyear} = $year;
}
if ($year > $wikistate{calendar}{maxyear}) {
$wikistate{calendar}{maxyear} = $year;
}
}
sub previousmonth($$$) {
my $year = shift;
my $month = shift;
my $archivebase = shift;
if (not exists $wikistate{calendar}{minyear}) {
$wikistate{calendar}{minyear} = $year;
}
my $pmonth = $month;
my $pyear = $year;
while ((not exists $pagesources{"$archivebase/$pyear/" . sprintf("%02d", $pmonth)}) or ($pmonth == $month and $pyear == $year)) {
$pmonth -= 1;
if ($pmonth == 0) {
$pyear -= 1;
$pmonth = 12;
return ($pyear, $pmonth, 0) unless $pyear >= $wikistate{calendar}{minyear};
}
}
return ($pyear, $pmonth, 1);
}
sub nextmonth($$$) {
my $year = shift;
my $month = shift;
my $archivebase = shift;
if (not exists $wikistate{calendar}{maxyear}) {
$wikistate{calendar}{maxyear} = $year;
}
my $nmonth = $month;
my $nyear = $year;
while ((not exists $pagesources{"$archivebase/$nyear/" . sprintf("%02d", $nmonth)}) or ($nmonth == $month and $nyear == $year)) {
$nmonth += 1;
if ($nmonth == 13) {
$nyear += 1;
$nmonth = 1;
return ($nyear, $nmonth, 0) unless $nyear <= $wikistate{calendar}{maxyear};
}
}
return ($nyear, $nmonth, 1);
}
sub previousyear($$) {
my $year = shift;
my $archivebase = shift;
my $pyear = $year - 1;
while (not exists $pagesources{"$archivebase/$pyear"}) {
$pyear -= 1;
return ($pyear, 0) unless ($pyear >= $wikistate{calendar}{minyear});
}
return ($pyear, 1);
}
sub nextyear($$) {
my $year = shift;
my $archivebase = shift;
my $nyear = $year + 1;
while (not exists $pagesources{"$archivebase/$nyear"}) {
$nyear += 1;
return ($nyear, 0) unless ($nyear <= $wikistate{calendar}{maxyear});
}
return ($nyear, 1);
}
sub format_month (@) {
my %params=@_;
my %linkcache;
foreach my $p (pagespec_match_list($params{page},
"creation_year($params{year}) and creation_month($params{month}) and ($params{pages})",
# add presence dependencies to update
# month calendar when pages are added/removed
deptype => deptype("presence"))) {
my $mtime = $IkiWiki::pagectime{$p};
my @date = localtime($mtime);
my $mday = $date[3];
my $month = $date[4] + 1;
my $year = $date[5] + 1900;
my $mtag = sprintf("%02d", $month);
if (! $linkcache{"$year/$mtag/$mday"}) {
$linkcache{"$year/$mtag/$mday"} = [];
}
push(@{$linkcache{"$year/$mtag/$mday"}}, $p);
}
my $archivebase = 'archives';
$archivebase = $config{archivebase} if defined $config{archivebase};
$archivebase = $params{archivebase} if defined $params{archivebase};
my ($pyear, $pmonth, $pvalid) = previousmonth($params{year}, $params{month}, $archivebase);
my ($nyear, $nmonth, $nvalid) = nextmonth($params{year}, $params{month}, $archivebase);
# Add padding.
$pmonth=sprintf("%02d", $pmonth);
$nmonth=sprintf("%02d", $nmonth);
my $calendar="\n";
# When did this month start?
my @monthstart = localtime(timelocal(0,0,0,1,$params{month}-1,$params{year}-1900));
my $future_dom = 0;
my $today = 0;
if ($params{year} == $now[5]+1900 && $params{month} == $now[4]+1) {
$future_dom = $now[3]+1;
$today = $now[3];
}
# Find out month names for this, next, and previous months
my $monthabbrev=strftime_utf8("%b", @monthstart);
my $monthname=strftime_utf8("%B", @monthstart);
my $pmonthname=strftime_utf8("%B", localtime(timelocal(0,0,0,1,$pmonth-1,$pyear-1900)));
my $nmonthname=strftime_utf8("%B", localtime(timelocal(0,0,0,1,$nmonth-1,$nyear-1900)));
# Calculate URL's for monthly archives.
my ($url, $purl, $nurl)=("$monthname $params{year}",'','');
if (exists $pagesources{"$archivebase/$params{year}/$params{month}"}) {
$url = htmllink($params{page}, $params{destpage},
"$archivebase/$params{year}/".$params{month},
noimageinline => 1,
linktext => "$monthabbrev $params{year}",
title => $monthname);
}
add_depends($params{page}, "$archivebase/$params{year}/$params{month}",
deptype("presence"));
if (exists $pagesources{"$archivebase/$pyear/$pmonth"}) {
$purl = htmllink($params{page}, $params{destpage},
"$archivebase/$pyear/$pmonth",
noimageinline => 1,
linktext => "\&larr;",
title => $pmonthname);
}
add_depends($params{page}, "$archivebase/$pyear/$pmonth",
deptype("presence"));
if (exists $pagesources{"$archivebase/$nyear/$nmonth"}) {
$nurl = htmllink($params{page}, $params{destpage},
"$archivebase/$nyear/$nmonth",
noimageinline => 1,
linktext => "\&rarr;",
title => $nmonthname);
}
add_depends($params{page}, "$archivebase/$nyear/$nmonth",
deptype("presence"));
# Start producing the month calendar
$calendar=<<EOF;
<table class="month-calendar">
<tr>
<th class="month-calendar-arrow">$purl</th>
<th class="month-calendar-head" colspan="5">$url</th>
<th class="month-calendar-arrow">$nurl</th>
</tr>
<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++,$params{month}-1,$params{year}-1900));
my $downame = strftime_utf8("%A", @day);
my $dowabbr = substr($downame, 0, 1);
$downame{$dow % 7}=$downame;
$dowabbr{$dow % 7}=$dowabbr;
$calendar.= qq{\t\t<th class="month-calendar-day-head $downame" title="$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}">&nbsp;</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 => $params{year}, month => $params{month});
$day++, $wday++, $wday %= 7) {
# At this point, on a week_start_day, we close out a row,
# and start a new one -- unless it is week_start_day on the
# first, where we do not close a row -- since none was started.
if ($wday == $week_start_day) {
$calendar.=qq{\t</tr>\n} unless $day == 1;
$calendar.=qq{\t<tr>\n};
}
my $tag;
my $key="$params{year}/$params{month}/$day";
if (defined $linkcache{$key}) {
if ($day == $today) {
$tag='month-calendar-day-this-day';
}
else {
$tag='month-calendar-day-link';
}
$calendar.=qq{\t\t<td class="$tag $downame{$wday}">};
$calendar.=qq{<div class='popup'>$day<div class='balloon'>};
# Several postings on this page
$calendar.=qq{<ul>};
foreach my $page (@{$linkcache{$key}}) {
$calendar.= qq{\n\t\t\t<li>};
my $title;
if (exists $pagestate{$page}{meta}{title}) {
$title = "$pagestate{$page}{meta}{title}";
}
else {
$title = pagetitle(IkiWiki::basename($page));
}
$calendar.=htmllink($params{page}, $params{destpage},
$page,
noimageinline => 1,
linktext => $title,
title => $title);
$calendar.= '</li>';
}
$calendar.=qq{\n\t\t</ul>};
$calendar.=qq{</div></div>};
$calendar.=qq{</td>\n};
}
else {
if ($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}">&nbsp;</td>\n};
}
$calendar.=<<EOF;
</tr>
</table>
EOF
return $calendar;
}
sub format_year (@) {
my %params=@_;
my @post_months;
foreach my $p (pagespec_match_list($params{page},
"creation_year($params{year}) and ($params{pages})",
# add presence dependencies to update
# year calendar's links to months when
# pages are added/removed
deptype => deptype("presence"))) {
my $mtime = $IkiWiki::pagectime{$p};
my @date = localtime($mtime);
my $month = $date[4] + 1;
$post_months[$month]++;
}
my $calendar="\n";
my $archivebase = 'archives';
$archivebase = $config{archivebase} if defined $config{archivebase};
$archivebase = $params{archivebase} if defined $params{archivebase};
my ($pyear, $pvalid) = previousyear($params{year}, $archivebase);
my ($nyear, $nvalid) = nextyear($params{year}, $archivebase);
my $thisyear = $now[5]+1900;
my $future_month = 0;
$future_month = $now[4]+1 if $params{year} == $thisyear;
# calculate URL's for previous and next years
my ($url, $purl, $nurl)=("$params{year}",'','');
if (exists $pagesources{"$archivebase/$params{year}"}) {
$url = htmllink($params{page}, $params{destpage},
"$archivebase/$params{year}",
noimageinline => 1,
linktext => $params{year},
title => $params{year});
}
add_depends($params{page}, "$archivebase/$params{year}", deptype("presence"));
if (exists $pagesources{"$archivebase/$pyear"}) {
$purl = htmllink($params{page}, $params{destpage},
"$archivebase/$pyear",
noimageinline => 1,
linktext => "\&larr;",
title => $pyear);
}
add_depends($params{page}, "$archivebase/$pyear", deptype("presence"));
if (exists $pagesources{"$archivebase/$nyear"}) {
$nurl = htmllink($params{page}, $params{destpage},
"$archivebase/$nyear",
noimageinline => 1,
linktext => "\&rarr;",
title => $nyear);
}
add_depends($params{page}, "$archivebase/$nyear", deptype("presence"));
# Start producing the year calendar
my $m=$params{months_per_row}-2;
$calendar=<<EOF;
<table class="year-calendar">
<tr>
<th class="year-calendar-arrow">$purl</th>
<th class="year-calendar-head" colspan="$m">$url</th>
<th class="year-calendar-arrow">$nurl</th>
</tr>
<tr>
<th class="year-calendar-subhead" colspan="$params{months_per_row}">Months</th>
</tr>
EOF
for (my $month = 1; $month <= 12; $month++) {
my @day=localtime(timelocal(0,0,0,15,$month-1,$params{year}-1900));
my $murl;
my $monthname = strftime_utf8("%B", @day);
my $monthabbr = strftime_utf8("%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} && $thisyear == $params{year}) {
$tag = 'year-calendar-this-month';
}
elsif ($pagesources{"$archivebase/$params{year}/$mtag"}) {
$tag = 'year-calendar-month-link';
}
elsif ($future_month && $month >= $future_month) {
$tag = 'year-calendar-month-future';
}
else {
$tag = 'year-calendar-month-nolink';
}
if ($pagesources{"$archivebase/$params{year}/$mtag"} &&
$post_months[$mtag]) {
$murl = htmllink($params{page}, $params{destpage},
"$archivebase/$params{year}/$mtag",
noimageinline => 1,
linktext => $monthabbr,
title => $monthname);
$calendar.=qq{\t<td class="$tag">};
$calendar.=$murl;
$calendar.=qq{\t</td>\n};
}
else {
$calendar.=qq{\t<td class="$tag">$monthabbr</td>\n};
}
add_depends($params{page}, "$archivebase/$params{year}/$mtag",
deptype("presence"));
$calendar.=qq{\t</tr>\n} if ($month % $params{months_per_row} == 0);
}
$calendar.=<<EOF;
</table>
EOF
return $calendar;
}
sub setnextchange ($$) {
my $page=shift;
my $timestamp=shift;
if (! exists $pagestate{$page}{calendar}{nextchange} ||
$pagestate{$page}{calendar}{nextchange} > $timestamp) {
$pagestate{$page}{calendar}{nextchange}=$timestamp;
}
}
sub preprocess (@) {
my %params=@_;
my $thisyear=1900 + $now[5];
my $thismonth=1 + $now[4];
$params{pages} = "*" unless defined $params{pages};
$params{type} = "month" unless defined $params{type};
$params{week_start_day} = 0 unless defined $params{week_start_day};
$params{months_per_row} = 3 unless defined $params{months_per_row};
$params{year} = $thisyear unless defined $params{year};
$params{month} = $thismonth unless defined $params{month};
my $relativeyear=0;
if ($params{year} < 1) {
$relativeyear=1;
$params{year}=$thisyear+$params{year};
}
my $relativemonth=0;
if ($params{month} < 1) {
$relativemonth=1;
my $monthoff=$params{month};
$params{month}=($thismonth+$monthoff) % 12;
$params{month}=12 if $params{month}==0;
my $yearoff=POSIX::ceil(($thismonth-$params{month}) / -12)
- int($monthoff / 12);
$params{year}-=$yearoff;
}
$params{month} = sprintf("%02d", $params{month});
$changed{$params{year}}{$params{month}} = 1;
if ($params{type} eq 'month' && $params{year} == $thisyear
&& $params{month} == $thismonth) {
# calendar for current month, updates next midnight
setnextchange($params{destpage}, ($time
+ (60 - $now[0]) # seconds
+ (59 - $now[1]) * 60 # minutes
+ (23 - $now[2]) * 60 * 60 # hours
));
}
elsif ($params{type} eq 'month' &&
(($params{year} == $thisyear && $params{month} > $thismonth) ||
$params{year} > $thisyear)) {
# calendar for upcoming month, updates 1st of that month
setnextchange($params{destpage},
timelocal(0, 0, 0, 1, $params{month}-1, $params{year}));
}
elsif (($params{type} eq 'year' && $params{year} == $thisyear) ||
$relativemonth) {
# Calendar for current year updates 1st of next month.
# Any calendar relative to the current month also updates
# then.
if ($thismonth < 12) {
setnextchange($params{destpage},
timelocal(0, 0, 0, 1, $thismonth+1-1, $params{year}));
}
else {
setnextchange($params{destpage},
timelocal(0, 0, 0, 1, 1-1, $params{year}+1));
}
}
elsif ($relativeyear) {
# Any calendar relative to the current year updates 1st
# of next year.
setnextchange($params{destpage},
timelocal(0, 0, 0, 1, 1-1, $thisyear+1));
}
elsif ($params{type} eq 'year' && $params{year} > $thisyear) {
# calendar for upcoming year, updates 1st of that year
setnextchange($params{destpage},
timelocal(0, 0, 0, 1, 1-1, $params{year}));
}
else {
# calendar for past month or year, does not need
# to update any more
delete $pagestate{$params{destpage}}{calendar};
}
my $calendar="";
if ($params{type} eq 'month') {
$calendar=format_month(%params);
}
elsif ($params{type} eq 'year') {
$calendar=format_year(%params);
}
return "\n<div><div class=\"calendar\">$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};
}
}
}
return $needsbuild;
}
sub scan (@) {
my %params=@_;
my $page=$params{page};
return unless $config{calendar_autocreate};
# Check if year pages have to be generated
if (pagespec_match($page, $config{archive_pagespec})) {
my @ctime = localtime($IkiWiki::pagectime{$page});
gencalendaryear($ctime[5]+1900);
gencalendarmonth($ctime[5]+1900, $ctime[4]+1);
}
}
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