From 054458db9296b3f6e18452f3ebcf8406ab567c8c Mon Sep 17 00:00:00 2001 From: Tom Feist Date: Thu, 14 Apr 2011 07:30:59 +0100 Subject: undo.pl: new script which stores short-term history (ie: within one command), and allows you to undo with C-\. --- undo/undo.pl | 134 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 134 insertions(+) create mode 100644 undo/undo.pl diff --git a/undo/undo.pl b/undo/undo.pl new file mode 100644 index 0000000..5daa16e --- /dev/null +++ b/undo/undo.pl @@ -0,0 +1,134 @@ +# LICENCE: +# +# Copyright (c) 2011 Tom Feist +# +# Permission is hereby granted, free of charge, to any person obtaining a copy +# of this software and associated documentation files (the "Software"), to deal +# in the Software without restriction, including without limitation the rights +# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +# copies of the Software, and to permit persons to whom the Software is +# furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +# THE SOFTWARE. +# + +# TODO: attempt to create an undo function for short-term history in +# the input-bar. + +use strict; +use warnings; + +use Irssi; +use Irssi::Irc; +use Irssi::TextUI; + +use Data::Dumper; + +our $VERSION = '0.1'; +our %IRSSI = ( + authors => 'shabble', + contact => 'shabble+irssi@metavore.org', + name => '', + description => '', + license => 'MIT', + ); + +my @undo_list; + +sub undo_init { + Irssi::signal_add_first('gui key pressed' => \&sig_cmd_undo);} +} + +sub add_to_undo { + my ($str, $pos) = @_; + + return unless defined $str and defined $pos; + + my $undo_head = $undo_list[-1]; + + if (ref $undo_head) { + if ($str ne $undo_head->{str} && $pos != $undo_head->{pos}) { + push @undo_list, { str => $str, pos => $pos }; + } + } else { + push @undo_list, { str => $str, pos => $pos }; + } + + # enforce maximum size + # TODO: make this a setting? + + if (@undo_list > 100) { + shift @undo_list; + } +} + +sub sig_cmd_undo { + my ($key) = @_; + + if ($key == 10) { + @undo_list = (); + return; + } elsif ($key != 28) { + add_to_undo(_input(), _input_pos()); + return; + } + + Irssi::signal_stop(); + + my $prev_state = pop @undo_list; + + if (not defined $prev_state) { + print "No further undo"; + return; + } + + _input($prev_state->{str}); + _input_pos($prev_state->{pos}); +} + +sub _input { + my ($data) = @_; + + my $current_data = Irssi::parse_special('$L', 0, 0); + + # TODO: set this back up. + + # if ($settings->{utf8}->{value}) { + # $current_data = decode_utf8($current_data); + # } + + if (defined $data) { + # if ($settings->{utf8}->{value}) { + # Irssi::gui_input_set(encode_utf8($data)); + # } else { + Irssi::gui_input_set($data); + #} + } else { + $data = $current_data; + } + + return $data; +} + +sub _input_pos { + my ($pos) = @_; + my $cur_pos = Irssi::gui_input_get_pos(); + if (defined $pos) { + Irssi::gui_input_set_pos($pos) if $pos != $cur_pos; + } else { + $pos = $cur_pos; + } + + return $pos; +} + +undo_init(); -- cgit v1.2.3