use strict; use vars qw($VERSION %IRSSI); use Irssi qw(command signal_add signal_add_first active_win settings_get_str settings_get_bool channels windows settings_add_str settings_add_bool get_irssi_dir window_find_refnum signal_stop); $VERSION = '2.20'; %IRSSI = ( authors => 'Juerd', contact => 'juerd@juerd.nl', name => 'Scroll buffer restorer', description => 'Saves the buffer for /upgrade, so that no information is lost', license => 'Public Domain', url => 'http://juerd.nl/irssi/', changed => 'Thu Sep 22 01:37 CEST 2016', changes => 'Fixed file permissions (leaked everything via filesystem)', note1 => 'This script HAS TO BE in your scripts/autorun!', note2 => 'Perl support must be static or in startup', ); # Q: How can I get a very smooth and clean upgrade? # # A: /set -clear upgrade_separator # /set upgrade_suppress_join ON (default) # /set channel_sync OFF # Q: Can I use color in the upgrade_separator? # Q: Is it possible to save my command history? # Q: Can I prevent the screen from blinking? # Q: Can you make it faster? # # A: Probably not, but if you can do it, tell me how. use Irssi::TextUI; use Data::Dumper; my %suppress; sub _filename { sprintf '%s/scrollbuffer', get_irssi_dir } sub upgrade { my $fn = _filename; my $old_umask = umask 0077; open my $fh, q{>}, $fn or die "open $fn: $!"; umask $old_umask; print $fh join("\0", map $_->{server}->{address} . $_->{name}, channels), "\n"; for my $window (windows) { next unless defined $window; next if $window->{name} eq 'status'; my $view = $window->view; my $line = $view->get_lines; my $lines = 0; my $buf = ''; if (defined $line){ { $buf .= $line->get_text(1) . "\n"; $line = $line->next; $lines++; redo if defined $line; } } printf $fh "%s:%s\n%s", $window->{refnum}, $lines, $buf; } close $fh; unlink sprintf("%s/sessionconfig", get_irssi_dir); command 'layout save'; command 'save'; } sub restore { my $fn = _filename; open my $fh, q{<}, $fn or die "open $fn: $!"; unlink $fn or warn "unlink $fn: $!"; my @suppress = split /\0/, readline $fh; if (settings_get_bool 'upgrade_suppress_join') { chomp $suppress[-1]; @suppress{@suppress} = (2) x @suppress; } active_win->command('^window scroll off'); while (my $bla = readline $fh){ chomp $bla; my ($refnum, $lines) = split /:/, $bla; next unless $lines; my $window = window_find_refnum $refnum; unless (defined $window){ readline $fh for 1..$lines; next; } my $view = $window->view; $view->remove_all_lines(); $view->redraw(); my $buf = ''; $buf .= readline $fh for 1..$lines; my $sep = settings_get_str 'upgrade_separator'; $sep .= "\n" if $sep ne ''; $window->gui_printtext_after(undef, MSGLEVEL_CLIENTNOTICE, "$buf\cO$sep"); $view->redraw(); } active_win->command('^window scroll on'); active_win->command('^scrollback end'); } sub suppress { my ($first, $second) = @_; return unless scalar keys %suppress and settings_get_bool 'upgrade_suppress_join'; my $key_part = (grep { /^:?[#!+&]/ } split ' ', $second)[0]; $key_part =~ s/^://; my $key = $first->{address} . $key_part; if (exists $suppress{$key} and $suppress{$key}--) { signal_stop(); delete $suppress{$key} unless $suppress{$key}; } } settings_add_str 'buffer', 'upgrade_separator' => '=Upgrade='; settings_add_bool 'buffer', 'upgrade_suppress_join' => 1; signal_add_first 'session save' => 'upgrade'; signal_add_first 'session restore' => 'restore'; signal_add 'event 366' => 'suppress'; signal_add 'event join' => 'suppress'; unless (-f sprintf('%s/scripts/autorun/buf.pl', get_irssi_dir)) { Irssi::print('PUT THIS SCRIPT IN ~/.irssi/scripts/autorun/ BEFORE /UPGRADING!!'); } # Remove any left-over file. If 'session' doesn't exist (created by irssi # during /UPGRADE), neither should our file. unless (-e sprintf('%s/session', get_irssi_dir)) { my $fn = _filename; unlink $fn or warn "unlink $fn: $!" if -e $fn; }