X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/492a22ac75f8b41a427a98c44525b01a6fd181b5..bd8198fb77ed5cf77ddeb860ca1ac983bfaacbbd:/IkiWiki/Plugin/calendar.pm

diff --git a/IkiWiki/Plugin/calendar.pm b/IkiWiki/Plugin/calendar.pm
index 185026d20..c03b89667 100644
--- a/IkiWiki/Plugin/calendar.pm
+++ b/IkiWiki/Plugin/calendar.pm
@@ -1,4 +1,4 @@
-#! /usr/bin/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
@@ -25,6 +25,7 @@ use Time::Local;
 
 my $time=time;
 my @now=localtime($time);
+my %changed;
 
 sub import {
 	hook(type => "checkconfig", id => "calendar", call => \&checkconfig);
@@ -32,6 +33,7 @@ sub import {
 	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");
 }
@@ -104,6 +106,26 @@ sub month_days {
 	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);
@@ -149,8 +171,6 @@ sub gencalendaryear {
 	my $year = shift;
 	my %params = @_;
 
-	return unless $config{calendar_autocreate};
-
 	# Building year page
 	my $page = calendarlink($year);
 	my $pagefile = newpagefile($page, $config{default_pageext});
@@ -173,7 +193,7 @@ sub gencalendaryear {
 		}
 
 		# Filling potential gaps in years (e.g. calendar goes from 2010 to 2014,
-		# and we just added year 2005. We have to had years 2006 to 2009).
+		# 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) {
@@ -196,6 +216,74 @@ sub gencalendaryear {
 	}
 }
 
+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=@_;
 
@@ -221,26 +309,9 @@ sub format_month (@) {
 	my $archivebase = 'archives';
 	$archivebase = $config{archivebase} if defined $config{archivebase};
 	$archivebase = $params{archivebase} if defined $params{archivebase};
-  
-	my $pmonth = $params{month};
-	my $pyear  = $params{year};
-	while (((not exists $pagesources{"$archivebase/$pyear/" . sprintf("%02d", $pmonth)}) and ($pyear >= $wikistate{calendar}{minyear})) or ($pmonth == $params{month} and $pyear == $params{year})) {
-		$pmonth -= 1;
-		if ($pmonth == 0) {
-			$pyear -= 1;
-			$pmonth = 12;
-		}
-	}
-
-	my $nmonth = $params{month};
-	my $nyear  = $params{year};
-	while (((not exists $pagesources{"$archivebase/$nyear/" . sprintf("%02d", $nmonth)}) and ($nyear <= $wikistate{calendar}{maxyear})) or ($nmonth == $params{month} and $nyear == $params{year})) {
-		$nmonth += 1;
-		if ($nmonth == 13) {
-			$nyear += 1;
-			$nmonth = 1;
-		}
-	}
+	
+	my ($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);
@@ -416,7 +487,6 @@ sub format_year (@) {
 		my $mtime = $IkiWiki::pagectime{$p};
 		my @date  = localtime($mtime);
 		my $month = $date[4] + 1;
-		my $year  = $date[5] + 1900;
 
 		$post_months[$month]++;
 	}
@@ -427,14 +497,8 @@ sub format_year (@) {
 	$archivebase = $config{archivebase} if defined $config{archivebase};
 	$archivebase = $params{archivebase} if defined $params{archivebase};
 	
-	my $pyear = $params{year}  - 1;
-	while ((not exists $pagesources{"$archivebase/$pyear"}) and ($pyear > $wikistate{calendar}{minyear})) {
-		$pyear -= 1;
-	}
-	my $nyear = $params{year}  + 1;
-	while ((not exists $pagesources{"$archivebase/$nyear"}) and ($nyear < $wikistate{calendar}{maxyear})) {
-		$nyear += 1;
-	}
+	my ($pyear, $pvalid) = previousyear($params{year}, $archivebase);
+	my ($nyear, $nvalid) = nextyear($params{year}, $archivebase);
 
 	my $thisyear = $now[5]+1900;
 	my $future_month = 0;
@@ -569,6 +633,7 @@ sub preprocess (@) {
 	}
 	
 	$params{month} = sprintf("%02d", $params{month});
+	$changed{$params{year}}{$params{month}} = 1;
 	
 	if ($params{type} eq 'month' && $params{year} == $thisyear
 	    && $params{month} == $thismonth) {
@@ -654,6 +719,8 @@ 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});