Merge remote branch 'origin/dev'

1 files changed, 346 insertions, 0 deletions

diff --git a/prompt_info/prompt_replace.pl b/prompt_info/prompt_replace.pl
new file mode 100644
index 0000000..30120f7
--- /dev/null
+++ b/prompt_info/prompt_replace.pl
@@ -0,0 +1,346 @@
+use strict;
+use warnings;
+
+use Irssi;
+use Irssi::TextUI;              # for sbar_items_redraw
+use Data::Dumper;
+
+
+
+our $VERSION = "0.1";
+our %IRSSI =
+  (
+   authors         => "shabble",
+   contact         => 'shabble+irssi@metavore.org, shabble@#irssi/Freenode',
+   name            => "prompt_info",
+   description     => "Helper script for dynamically adding text "
+   . "into the input-bar prompt.",
+   license         => "Public Domain",
+   changed         => "24/7/2010"
+  );
+
+sub DEBUG () { 1 }
+#sub DEBUG () { 0 }
+
+my $prompt_data = undef;
+my $prompt_item = undef;
+
+my $region_active = 0;
+
+my ($term_w, $term_h) = (0, 0);
+
+# visual region selected.
+my ($region_start, $region_end) = (0, 0);
+my $region_content = '';
+
+my $prompt_format = '';
+
+init();
+
+sub update_terminal_size {
+
+    my @stty_data = qx/stty -a/;
+    my $line = $stty_data[0];
+
+    # linux
+    # speed 38400 baud; rows 36; columns 126; line = 0;
+    if ($line =~ m/rows (\d+); columns (\d+);/) {
+        $term_h = $1;
+        $term_w = $2;
+    # osx
+    # speed 9600 baud; 40 rows; 235 columns;
+    } elsif ($line =~ m/(\d+) rows; (\d+) columns;/) {
+        $term_h = $1;
+        $term_w = $2;
+    } else {
+        # guess?
+        $term_h = 24;
+        $term_w = 80;
+    }
+
+    print "Terminal detected as $term_w cols by $term_h rows" if DEBUG;
+}
+
+sub prompt_subcmd_handler {
+    my ($data, $server, $item) = @_;
+    $data =~ s/\s+$//g; # strip trailing whitespace.
+    Irssi::command_runsub('prompt', $data, $server, $item);
+}
+
+sub visual_subcmd_handler {
+    my ($data, $server, $item) = @_;
+    $data =~ s/\s+$//g; # strip trailing whitespace.
+    Irssi::command_runsub('visual', $data, $server, $item);
+}
+
+sub init {
+
+    Irssi::statusbar_item_register ('uberprompt', 0, 'uberprompt_draw');
+
+    Irssi::settings_add_str('uberprompt', 'uberprompt_format', '[$*] ');
+
+    Irssi::command_bind("prompt", \&prompt_subcmd_handler);
+    Irssi::command_bind('prompt on', \&replace_prompt_items);
+    Irssi::command_bind('prompt off', \&restore_prompt_items);
+    Irssi::command_bind('prompt set',
+                        sub { Irssi::signal_emit 'change prompt', shift; });
+    Irssi::command_bind('prompt clear',
+                        sub { Irssi::signal_emit 'change prompt', '$p'; });
+
+    # misc faff
+    Irssi::command_bind('visual', \&visual_subcmd_handler);
+    Irssi::command_bind('visual toggle', \&cmd_toggle_visual);
+    Irssi::command_bind('visual clear',  \&cmd_clear_visual);
+
+    Irssi::command("^BIND ^F /visual toggle");
+    Irssi::command("^BIND ^G /visual clear");
+
+    Irssi::command_bind 'print_test',
+        sub {
+            Irssi::gui_printtext(0, 0, '%8hello there%n');
+            };
+
+    # redraw interception
+    Irssi::signal_add_last('command redraw',   \&augment_redraw);
+    Irssi::signal_add_first('gui key pressed', \&ctrl_l_intercept);
+
+    # for updating the overlay.
+    Irssi::signal_add_last ('gui key pressed', \&key_pressed);
+
+    # things to refresh the overlay for.
+    Irssi::signal_add('window changed',           \&uberprompt_refresh);
+    Irssi::signal_add('window name changed',      \&uberprompt_refresh);
+    Irssi::signal_add('window changed automatic', \&uberprompt_refresh);
+    Irssi::signal_add('window item changed',      \&uberprompt_refresh);
+
+    Irssi::signal_add('terminal resized', \&update_terminal_size);
+    Irssi::signal_add('setup changed',    \&reload_settings);
+
+    # so we know where the bottom line is
+    update_terminal_size();
+
+    # intialise the prompt format.
+    reload_settings();
+
+    # install our statusbars.
+    replace_prompt_items();
+
+    # the actual API signals.
+    Irssi::signal_register({'change prompt' => [qw/string/]});
+    Irssi::signal_add('change prompt' => \&change_prompt_sig);
+
+    Irssi::signal_register({'prompt changed' => [qw/string int/]});
+}
+
+sub change_prompt_sig {
+    my ($text) = @_;
+
+    $text = '$p' . $text;
+    print "Got prompt change sig with: $text" if DEBUG;
+
+    my $changed;
+    $changed = defined $prompt_data ? $prompt_data ne $text : 1;
+
+    $prompt_data = $text;
+
+    if ($changed) {
+        print "Redrawing prompt" if DEBUG;
+        uberprompt_refresh();
+    }
+}
+
+
+sub UNLOAD {
+    # remove uberprompt and return the original ones.
+    restore_prompt_items();
+}
+
+sub reload_settings {
+    my $new = Irssi::settings_get_str('uberprompt_format');
+    if ($prompt_format ne $new) {
+        print "Updated prompt format" if DEBUG;
+        $prompt_format = $new;
+        Irssi::abstracts_register(['uberprompt', $prompt_format]);
+    }
+}
+
+sub uberprompt_draw {
+    my ($sb_item, $get_size_only) = @_;
+
+    my $default_prompt = '';
+
+    my $window = Irssi::active_win;
+
+    # hack to produce the same defaults as prompt/prompt_empty sbars.
+
+    if (scalar( () = $window->items )) {
+        $default_prompt = '{uberprompt $[.15]itemname}';
+    } else {
+        $default_prompt = '{uberprompt $winname}';
+    }
+
+    my $p_copy = $prompt_data;
+
+    if (defined $prompt_data) {
+        # replace the special marker '$p' with the original prompt.
+        $p_copy =~ s/\$p/$default_prompt/;
+    } else {
+        $p_copy = $default_prompt;
+    }
+    print "Redrawing with: $p_copy, size-only: $get_size_only" if DEBUG;
+
+    $prompt_item = $sb_item;
+
+    my $ret = $sb_item->default_handler($get_size_only, $p_copy, '', 0);
+
+    Irssi::signal_emit('prompt changed', $p_copy, $sb_item->{size});
+
+    return $ret;
+}
+
+sub augment_redraw {
+    print "Redraw called" if DEBUG;
+    uberprompt_refresh();
+    Irssi::timeout_add_once(10, \&refresh_visual_overlay, 0);
+}
+
+sub uberprompt_refresh {
+    Irssi::statusbar_items_redraw('uberprompt');
+}
+
+
+sub cmd_clear_visual {
+    _clear_visual_region();
+    #refresh_visual_overlay();
+    Irssi::statusbar_items_redraw('input');
+}
+
+sub cmd_toggle_visual {
+
+    $region_active = not $region_active;
+
+    if ($region_active) {
+        $region_start = _pos();
+        $region_end   = 0; # reset end marker.
+        print "visual mode started at $region_start" if DEBUG;
+    } else {
+        $region_end = _pos();
+        print "Visual mode ended at $region_end" if DEBUG;
+
+        if ($region_end > $region_start) {
+            my $input = Irssi::parse_special('$L', 0, 0);
+            my $str = substr($input, $region_start, $region_end - $region_start);
+            print "Region selected: $str" if DEBUG;
+        } else {
+            print "Invalid region selection: [ $region_start - $region_end ]"
+              if DEBUG;
+            $region_start = $region_end = 0;
+        }
+        cmd_clear_visual();
+    }
+}
+
+sub ctrl_l_intercept {
+    my $key = shift;
+
+    if ($key == 12) { # C-l
+        print "C-l pressed" if DEBUG;
+        Irssi::command("redraw");
+        Irssi::signal_stop();
+    } elsif ($key == 10) { # RET
+        _clear_visual_region();
+    }
+}
+
+sub key_pressed {
+    # this handler needs to be last so the actual character is printed by irssi
+    # before we overlay on it. Otherwise things are all a bit off-by-1
+    return unless $region_active;
+
+    refresh_visual_overlay();
+}
+
+sub _clear_visual_region {
+    print "Clearing Region markers" if DEBUG;
+    $region_end = 0;
+    $region_start = 0;
+}
+
+
+sub refresh_visual_overlay {
+
+    my $end_pos = $region_end;
+    $end_pos  ||= _pos(); # if not set, take current position as end.
+
+    my $len = $end_pos - $region_start;
+    return unless $len; # no point drawing an empty overlay
+
+    my $input = Irssi::parse_special('$L');
+    my $offset = $prompt_item->{size} + $region_start;
+
+    my $text = substr($input, $region_start, $len);
+
+    print "printing '$text' at $offset [$region_start, $end_pos] ($len)" if DEBUG;
+
+    $text = '%8' . $text . '%8';
+    _draw_overlay($offset, $text, $len);
+
+}
+
+sub _draw_overlay {
+    my ($offset, $text, $len) = @_;
+    Irssi::gui_printtext($offset, $term_h, $text);
+}
+
+sub replace_prompt_items {
+    # remove existing ones.
+    print "Removing original prompt" if DEBUG;
+
+    _sbar_command('prompt', 'remove', 'prompt');
+    _sbar_command('prompt', 'remove', 'prompt_empty');
+
+    # add the new one.
+
+    _sbar_command('prompt', 'add', 'uberprompt',
+                  qw/-alignment left -before input -priority '-1'/);
+
+    _sbar_command('prompt', 'position', '100');
+}
+
+sub restore_prompt_items {
+
+    _sbar_command('prompt', 'remove', 'uberprompt');
+
+    print "Restoring original prompt" if DEBUG;
+
+    _sbar_command('prompt', 'add', 'prompt',
+                  qw/-alignment left -before input -priority '-1'/);
+    _sbar_command('prompt', 'add', 'prompt_empty',
+                  qw/-alignment left -after prompt -priority '-1'/);
+
+    _sbar_command('prompt', 'position', '100');
+
+}
+
+sub _sbar_command {
+    my ($bar, $cmd, $item, @args) = @_;
+
+    my $args_str = join ' ', @args;
+
+    $args_str .= ' ' if length $args_str && defined $item;
+
+    my $command = sprintf 'STATUSBAR %s %s %s%s',
+      $bar, $cmd, $args_str, defined($item)?$item:'';
+
+    print "Running command: $command" if DEBUG;
+    Irssi::command($command);
+}
+
+sub _pos {
+    return Irssi::gui_input_get_pos();
+}
+
+
+# bit of fakery so things don't complain about the lack of prompt_info (hoepfully)
+
+%Irssi::Script::prompt_info:: = ();