mirror of https://github.com/irssi/irssi.git
133 lines
4.5 KiB
Perl
133 lines
4.5 KiB
Perl
use strict;
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use vars qw($VERSION %IRSSI);
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use Storable;
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use 5.014000;
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use Irssi qw(command signal_add signal_add_first active_win
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settings_get_str settings_get_bool channels windows
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settings_add_str settings_add_bool get_irssi_dir
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window_find_refnum signal_stop);
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$VERSION = '3.00';
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%IRSSI = (
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authors => 'Juerd',
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contact => 'juerd@juerd.nl',
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name => 'Scroll buffer restorer',
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description => 'Saves the buffer for /upgrade, so that no information is lost',
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license => 'Public Domain',
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url => 'http://juerd.nl/irssi/',
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changed => 'Thu Mar 29 10:00 CEST 2018',
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changes => 'Fixed file permissions (leaked everything via filesystem), rewritten to use Storable and print to correct levels',
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note1 => 'This script HAS TO BE in your scripts/autorun!',
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note2 => 'Perl support must be static or in startup',
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);
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# Q: How can I get a very smooth and clean upgrade?
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#
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# A: /set -clear upgrade_separator
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# /set upgrade_suppress_join ON (default)
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# /set channel_sync OFF
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# Q: Can I use color in the upgrade_separator?
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# Q: Is it possible to save my command history?
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# Q: Can I prevent the screen from blinking?
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# Q: Can you make it faster?
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#
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# A: Probably not, but if you can do it, tell me how.
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use Irssi::TextUI;
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use Data::Dumper;
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my %suppress;
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sub _filename { sprintf '%s/scrollbuffer', get_irssi_dir }
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sub upgrade {
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my $out = { suppress => [ map $_->{server}->{address} . $_->{name}, channels ] };
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for my $window (windows) {
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next unless defined $window;
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next if $window->{name} eq 'status';
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my $view = $window->view;
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my $line = $view->get_lines;
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my $lines = 0;
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my $buf = '';
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my $output;
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if (defined $line) {
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{
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push @$output, { level => $line->{info}{level}, data => $line->get_text(1) };
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$line = $line->next;
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redo if defined $line;
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}
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}
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push @{$out->{windows}}, { refnum => $window->{refnum}, lines => $output };
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}
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my $old_umask = umask 0077;
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my $fn = _filename;
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store($out, $fn) or die "Could not store data to $fn";
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umask $old_umask;
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unlink sprintf("%s/sessionconfig", get_irssi_dir);
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command 'layout save';
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command 'save';
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}
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sub restore {
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my $fn = _filename;
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my $in = retrieve($fn) or die "Could not retrieve data from $fn";
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unlink $fn or warn "unlink $fn: $!";
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my @suppress = @{$in->{suppress}};
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@suppress{@suppress} = (2) x @suppress if (settings_get_bool 'upgrade_suppress_join');
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active_win->command('^window scroll off');
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for my $win (@{$in->{windows}}) {
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my $window = window_find_refnum $win->{refnum};
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next unless $window;
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my @lines = @{ $win->{lines} || [] };
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next unless @lines;
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my $view = $window->view;
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$view->remove_all_lines();
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$view->redraw();
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for my $line (@lines) {
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my $level = $line->{level};
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my $data = $line->{data};
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$window->gui_printtext_after($window->last_line_insert, $level, "$data\n");
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}
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my $sep = settings_get_str 'upgrade_separator';
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$window->gui_printtext_after($window->last_line_insert, MSGLEVEL_CLIENTNOTICE, "\cO$sep\n") if $sep ne '';
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$view->redraw();
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}
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active_win->command('^window scroll on');
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active_win->command('^scrollback end');
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}
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sub suppress {
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my ($first, $second) = @_;
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return unless scalar keys %suppress and settings_get_bool 'upgrade_suppress_join';
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my $key_part = (grep { /^:?[#!+&]/ } split ' ', $second)[0];
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$key_part =~ s/^://;
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my $key = $first->{address} . $key_part;
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if (exists $suppress{$key} and $suppress{$key}--) {
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signal_stop();
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delete $suppress{$key} unless $suppress{$key};
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}
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}
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settings_add_str 'buffer', 'upgrade_separator' => '=Upgrade=';
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settings_add_bool 'buffer', 'upgrade_suppress_join' => 1;
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signal_add_first 'session save' => 'upgrade';
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signal_add_first 'session restore' => 'restore';
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signal_add 'event 366' => 'suppress';
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signal_add 'event join' => 'suppress';
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unless (-f sprintf('%s/scripts/autorun/buf.pl', get_irssi_dir)) {
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Irssi::print('PUT THIS SCRIPT IN ~/.irssi/scripts/autorun/ BEFORE /UPGRADING!!');
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}
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# Remove any left-over file. If 'session' doesn't exist (created by irssi
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# during /UPGRADE), neither should our file.
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unless (-e sprintf('%s/session', get_irssi_dir)) {
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my $fn = _filename;
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unlink $fn or warn "unlink $fn: $!" if -e $fn;
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}
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