From f7694214009de69f1c8c5f5f6f3dca73f8869ca1 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Thu, 20 May 2021 01:38:46 +0200
Subject: fix use string entries from Data::ICal object (iCal::Parser is
 broken: not only fails to unescape characters but rewraps raw octets which
 breaks UTF-8 e.g. when danish å is first character after an auto-wrap that
 gets rewrapped)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 bin/events2md.pl | 29 +++++++++++++----------------
 1 file changed, 13 insertions(+), 16 deletions(-)

diff --git a/bin/events2md.pl b/bin/events2md.pl
index 2964867..282afa8 100755
--- a/bin/events2md.pl
+++ b/bin/events2md.pl
@@ -133,7 +133,7 @@ if ( $log->is_trace ) {
 # serialize calendar events
 $log->debug('serialize calendar events...');
 my $parser = iCal::Parser->new( start => $start, end => $end );
-my $events = $parser->parse_strings( decode_utf8 $calendar->as_string );
+my $events = $parser->parse_strings( $calendar->as_string );
 if ( $log->is_trace ) {
 	use DDP;
 	p $events;
@@ -177,17 +177,18 @@ sub print_event
 		p $entry;
 		p $event;
 	}
-	my $summary     = unescape( $event->{SUMMARY} );
-	my $description = unescape( $event->{DESCRIPTION} );
+	my $summary     = get_property_string( $entry, 'summary' );
+	my $description = get_property_string( $entry, 'description' );
 	$description =~ s/\n\n[Pp]ris:\s*((?!\n).+)\s*\z//m;
 	my $price = $1;
 	my @attendees;
-	if ( $event->{ATTENDEE} ) {
-		for ( @{ $event->{ATTENDEE} } ) {
-			push @attendees, $_->{'CN'} || $_->{value} =~ s/^mailto://r;
+	if ( $entry->property('attendee') ) {
+		for ( @{ $entry->property('attendee') } ) {
+			push @attendees, decode_utf8 $_->parameters->{'CN'}
+				|| $_->value =~ s/^mailto://r;
 		}
 	}
-	my $location   = unescape( $event->{LOCATION} );
+	my $location   = get_property_string( $entry, 'location' );
 	my $time_begin = ucfirst( $event->{DTSTART}->strftime('%A') );
 	$time_begin .= $event->{DTSTART}->strftime(' %e. %B kl. %k.%M');
 	my $time_end = $event->{DTEND}->strftime('%k.%M');
@@ -228,18 +229,14 @@ sub print_event
 	}
 }
 
-# unescape characters in iCalendar TEXT content strings
-# should fully cover iCalendar 2.0 (rfc5545 and rfc6868)
-sub unescape
+sub get_property_string
 {
-	($_) = @_;
+	my ( $entry, $key ) = @_;
 
-	s/\^n|\\[Nn]/\n/g;
-	s/\^\'/\"/g;
-	s/\^\^/^/g;
-	s/\\([\\;,])/$1/g;
+	return ''
+		unless $entry->property($key);
 
-	return $_;
+	return decode_utf8 $entry->property($key)->[0]->value;
 }
 
 1;
-- 
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