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-rw-r--r--.urxvt/ext/keyboard-select567
1 files changed, 567 insertions, 0 deletions
diff --git a/.urxvt/ext/keyboard-select b/.urxvt/ext/keyboard-select
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+#! perl -w
+# Author: Bert Muennich
+# Website: http://www.github.com/muennich/urxvt-perls
+# License: GPLv2
+
+# Use keyboard shortcuts to select and copy text.
+
+# Usage: put the following lines in your .Xdefaults/.Xresources:
+# URxvt.perl-ext-common: ...,keyboard-select
+# URxvt.keysym.M-Escape: perl:keyboard-select:activate
+# The following line overwrites the default Meta-s binding and allows to
+# activate keyboard-select directly in backward search mode:
+# URxvt.keysym.M-s: perl:keyboard-select:search
+
+# Use Meta-Escape to activate selection mode, then use the following keys:
+# h/j/k/l: Move cursor left/down/up/right (also with arrow keys)
+# g/G/0/^/$/H/M/L/f/F/;/,/w/W/b/B/e/E: More vi-like cursor movement keys
+# '/'/?: Start forward/backward search
+# n/N: Repeat last search, N: in reverse direction
+# Ctrl-f/b: Scroll down/up one screen
+# Ctrl-d/u: Scroll down/up half a screen
+# v/V/Ctrl-v: Toggle normal/linewise/blockwise selection
+# y/Return: Copy selection to primary buffer, Return: deactivate afterwards
+# q/Escape: Deactivate keyboard selection mode
+
+
+use strict;
+
+sub on_start{
+ my ($self) = @_;
+
+ $self->{patterns}{'w'} = qr/\w[^\w\s]|\W\w|\s\S/;
+ $self->{patterns}{'W'} = qr/\s\S/;
+ $self->{patterns}{'b'} = qr/.*(?:\w[^\w\s]|\W\w|\s\S)/;
+ $self->{patterns}{'B'} = qr/.*\s\S/;
+ $self->{patterns}{'e'} = qr/[^\w\s](?=\w)|\w(?=\W)|\S(?=\s|$)/;
+ $self->{patterns}{'E'} = qr/\S(?=\s|$)/;
+
+ ()
+}
+
+
+sub on_user_command {
+ my ($self, $cmd) = @_;
+
+ if (not $self->{active}) {
+ if ($cmd eq 'keyboard-select:activate') {
+ activate($self);
+ } elsif ($cmd eq 'keyboard-select:search') {
+ activate($self, 1);
+ }
+ }
+
+ ()
+}
+
+
+sub key_press {
+ my ($self, $event, $keysym, $char) = @_;
+ my $key = chr($keysym);
+
+ if (lc($key) eq 'c' && $event->{state} & urxvt::ControlMask) {
+ deactivate($self);
+ } elsif ($self->{search}) {
+ if ($keysym == 0xff1b) {
+ if ($self->{search_mode}) {
+ deactivate($self);
+ } else {
+ $self->{search} = '';
+ status_area($self);
+ }
+ } elsif ($keysym == 0xff08) {
+ $self->{search} = substr($self->{search}, 0, -1);
+ if (not $self->{search} and $self->{search_mode}) {
+ deactivate($self);
+ } else {
+ status_area($self);
+ }
+ } elsif ($keysym == 0xff0d) {
+ my $txt = substr($self->{search}, 1);
+ if ($txt) {
+ $self->{pattern} = ($txt =~ m/[[:upper:]]/) ? qr/\Q$txt\E/ :
+ qr/\Q$txt\E/i;
+ } elsif ($self->{pattern}) {
+ delete $self->{pattern};
+ }
+ $self->{search} = '';
+ if (not find_next($self)) {
+ if ($self->{search_mode}) {
+ deactivate($self);
+ } else {
+ status_area($self);
+ }
+ }
+ } elsif (length($char) > 0) {
+ $self->{search} .= $self->locale_decode($char);
+ status_area($self);
+ }
+ } elsif ($self->{move_to}) {
+ if ($keysym == 0xff1b) {
+ $self->{move_to} = 0;
+ status_area($self);
+ } elsif (length($char) > 0) {
+ $self->{move_to} = 0;
+ $self->{patterns}{'f-1'} = qr/^.*\Q$key\E/;
+ $self->{patterns}{'f+1'} = qr/^.+?\Q$key\E/;
+ move_to($self, ';');
+ status_area($self);
+ }
+ } elsif ($keysym == 0xff1b || lc($key) eq 'q') {
+ deactivate($self);
+ } elsif ($key eq 'y' || $keysym == 0xff0d) {
+ if ($self->{select}) {
+ if ($self->{select} eq 'b') {
+ $self->selection($self->{selection});
+ $self->selection_grab($event->{time});
+ } else {
+ my ($br, $bc, $er, $ec) = calc_span($self);
+ $ec = $self->line($er)->l if $self->{select} eq 'l';
+ $self->selection_beg($br, $bc);
+ $self->selection_end($er, $ec);
+ $self->selection_make($event->{time});
+ }
+ if ($key eq 'y') {
+ if ($self->{select} ne 'b') {
+ $self->selection_beg(1, 0);
+ $self->selection_end(1, 0);
+ }
+ $self->{select} = '';
+ status_area($self);
+ $self->want_refresh();
+ } else {
+ deactivate($self);
+ }
+ }
+ } elsif ($key eq 'V') {
+ toggle_select($self, 'l');
+ } elsif ($key eq 'v') {
+ if ($event->{state} & urxvt::ControlMask) {
+ toggle_select($self, 'b');
+ } else {
+ toggle_select($self, 'n');
+ }
+ } elsif ($key eq 'k' || $keysym == 0xff52) {
+ move_cursor($self, 'k');
+ } elsif ($key eq 'j' || $keysym == 0xff54) {
+ move_cursor($self, 'j');
+ } elsif ($key eq 'h' || $keysym == 0xff51) {
+ move_cursor($self, 'h');
+ } elsif ($key eq 'l' || $keysym == 0xff53) {
+ move_cursor($self, 'l');
+ } elsif ('gG0^$HML' =~ m/\Q$key\E/ ||
+ ('fbdu' =~ m/\Q$key\E/ && $event->{state} & urxvt::ControlMask)) {
+ move_cursor($self, $key);
+ } elsif (lc($key) eq 'f') {
+ $self->{move_to} = 1;
+ $self->{move_dir} = $key eq 'F' ? -1 : 1;
+ status_area($self, $key);
+ } elsif (';,wWbBeE' =~ m/\Q$key\E/) {
+ move_to($self, $key);
+ } elsif ($key eq '/' || $key eq '?') {
+ $self->{search} = $key;
+ $self->{search_dir} = $key eq '?' ? -1 : 1;
+ status_area($self);
+ } elsif (lc($key) eq 'n') {
+ find_next($self, $self->{search_dir} * ($key eq 'N' ? -1 : 1));
+ }
+
+ return 1;
+}
+
+
+sub move_cursor {
+ my ($self, $key) = @_;
+ my ($cr, $cc) = $self->screen_cur();
+ my $line = $self->line($cr);
+
+ if ($key eq 'k' && $line->beg > $self->top_row) {
+ $cr = $line->beg - 1;
+ } elsif ($key eq 'j' && $line->end < $self->nrow - 1) {
+ $cr = $line->end + 1;
+ } elsif ($key eq 'h' && $self->{offset} > 0) {
+ $self->{offset} = $line->offset_of($cr, $cc) - 1;
+ $self->{dollar} = 0;
+ } elsif ($key eq 'l' && $self->{offset} < $line->l - 1) {
+ ++$self->{offset};
+ } elsif ($key eq 'f' || $key eq 'd') {
+ my $vs = $self->view_start() +
+ ($key eq 'd' ? $self->nrow / 2 : $self->nrow - 1);
+ $vs = 0 if $vs > 0;
+ $cr += $vs - $self->view_start($vs);
+ } elsif ($key eq 'b' || $key eq 'u') {
+ my $vs = $self->view_start() -
+ ($key eq 'u' ? $self->nrow / 2 : $self->nrow - 1);
+ $vs = $self->top_row if $vs < $self->top_row;
+ $cr += $vs - $self->view_start($vs);
+ } elsif ($key eq 'g') {
+ ($cr, $self->{offset}) = ($self->top_row, 0);
+ $self->{dollar} = 0;
+ } elsif ($key eq 'G') {
+ ($cr, $self->{offset}) = ($self->nrow - 1, 0);
+ $self->{dollar} = 0;
+ } elsif ($key eq '0') {
+ $self->{offset} = 0;
+ $self->{dollar} = 0;
+ } elsif ($key eq '^') {
+ my $ltxt = $self->special_decode($line->t);
+ while ($ltxt =~ s/^( *)\t/$1 . " " x (8 - length($1) % 8)/e) {}
+ $self->{offset} = $ltxt =~ m/^ +/ ? $+[0] : 0;
+ $self->{dollar} = 0;
+ } elsif ($key eq '$') {
+ my $co = $line->offset_of($cr, $cc);
+ $self->{dollar} = $co + 1;
+ $self->{offset} = $line->l - 1;
+ } elsif ($key eq 'H') {
+ $cr = $self->view_start();
+ } elsif ($key eq 'M') {
+ $cr = $self->view_start() + $self->nrow / 2;
+ } elsif ($key eq 'L') {
+ $cr = $self->view_start() + $self->nrow - 1;
+ }
+
+ $line = $self->line($cr);
+ $cc = $self->{dollar} || $self->{offset} >= $line->l ? $line->l - 1 :
+ $self->{offset};
+ $self->screen_cur($line->coord_of($cc));
+
+ status_area($self);
+ $self->want_refresh();
+
+ ()
+}
+
+
+sub move_to {
+ my ($self, $key) = @_;
+ my ($cr, $cc) = $self->screen_cur();
+ my $line = $self->line($cr);
+ my $offset = $self->{offset};
+ my ($dir, $pattern);
+ my ($wrap, $found) = (0, 0);
+
+ if ($key eq ';' || $key eq ',') {
+ $dir = $self->{move_dir} * ($key eq ',' ? -1 : 1);
+ $pattern = $self->{patterns}{sprintf('f%+d', $dir)};
+ return if not $pattern;
+ } else {
+ if (lc($key) eq 'b') {
+ $dir = -1;
+ } else {
+ $dir = 1;
+ ++$offset if lc($key) eq 'e';
+ }
+ $pattern = $self->{patterns}{$key};
+ $wrap = 1;
+ }
+
+ if ($dir > 0) {
+ NEXTDOWN: my $text = substr($line->t, $offset);
+ if ($text =~ m/$pattern/) {
+ $offset += $+[0] - 1;
+ $found = 1;
+ } elsif ($wrap && $line->end + 1 < $self->nrow) {
+ $cr = $line->end + 1;
+ $line = $self->line($cr);
+ $offset = 0;
+ if (lc($key) eq 'e') {
+ goto NEXTDOWN;
+ } else {
+ $found = 1;
+ }
+ }
+ } elsif ($dir < 0) {
+ NEXTUP: my $text = substr($line->t, 0, $offset);
+ if ($text =~ m/$pattern/) {
+ $offset += $+[0] - length($text) - 1;
+ $found = 1;
+ } elsif ($wrap) {
+ if ($offset > 0) {
+ $offset = 0;
+ $found = 1;
+ } elsif ($line->beg > $self->top_row) {
+ $cr = $line->beg - 1;
+ $line = $self->line($cr);
+ $offset = $line->l;
+ goto NEXTUP;
+ }
+ }
+ }
+
+ if ($found) {
+ $self->{dollar} = 0;
+ $self->{offset} = $offset;
+ $self->screen_cur($line->coord_of($offset));
+ $self->want_refresh();
+ }
+
+ ()
+}
+
+
+sub find_next {
+ my ($self, $dir) = @_;
+
+ return if not $self->{pattern};
+ $dir = $self->{search_dir} if not $dir;
+
+ my ($cr, $cc) = $self->screen_cur();
+ my $line = $self->line($cr);
+ my $offset = $line->offset_of($cr, $cc);
+ my $text;
+ my $found = 0;
+
+ ++$offset if $dir > 0;
+
+ while (not $found) {
+ if ($dir > 0) {
+ $text = substr($line->t, $offset);
+ if ($text =~ m/$self->{pattern}/) {
+ $found = 1;
+ $offset += $-[0];
+ } else {
+ last if $line->end >= $self->nrow;
+ $line = $self->line($line->end + 1);
+ $offset = 0;
+ }
+ } else {
+ $text = substr($line->t, 0, $offset);
+ if ($text =~ m/$self->{pattern}/) {
+ $found = 1;
+ $offset = $-[0] while $text =~ m/$self->{pattern}/g;
+ } else {
+ last if $line->beg <= $self->top_row;
+ $line = $self->line($line->beg - 1);
+ $offset = $line->l;
+ }
+ }
+ }
+
+ if ($found) {
+ $self->{dollar} = 0;
+ $self->{offset} = $offset;
+ $self->screen_cur($line->coord_of($offset));
+ status_area($self);
+ $self->want_refresh();
+ }
+
+ return $found;
+}
+
+
+sub tt_write {
+ return 1;
+}
+
+
+sub refresh {
+ my ($self) = @_;
+ my $reverse_cursor = $self->{select} ne 'l';
+ my ($cr, $cc) = $self->screen_cur();
+
+ if ($self->{select}) {
+ my ($br, $bc, $er, $ec) = calc_span($self);
+
+ if ($self->{select} eq 'b') {
+ delete $self->{selection} if $self->{selection};
+ my $co = $self->line($cr)->offset_of($cr, $cc);
+ my $dollar = $self->{dollar} && $co >= $self->{dollar} - 1;
+
+ my $r = $br;
+ while ($r <= $er) {
+ my $line = $self->line($r);
+ if ($bc < $line->l) {
+ $ec = $line->l if $dollar;
+ $self->{selection} .= substr($line->t, $bc, $ec - $bc);
+ my ($br, $bc) = $line->coord_of($bc);
+ my ($er, $ec) = $line->coord_of($ec <= $line->l ? $ec : $line->l);
+ $self->scr_xor_span($br, $bc, $er, $ec, urxvt::RS_RVid);
+ } elsif ($r == $cr) {
+ $reverse_cursor = 0;
+ }
+ $self->{selection} .= "\n" if $line->end < $er;
+ $r = $line->end + 1;
+ }
+ } else {
+ $self->scr_xor_span($br, $bc, $er, $ec, urxvt::RS_RVid);
+ }
+
+ if ($reverse_cursor) {
+ # make the cursor visible again
+ $self->scr_xor_span($cr, $cc, $cr, $cc + 1, urxvt::RS_RVid);
+ }
+ }
+
+ # scroll the current cursor position into visible area
+ if ($cr < $self->view_start()) {
+ $self->view_start($cr);
+ } elsif ($cr >= $self->view_start() + $self->nrow) {
+ $self->view_start($cr - $self->nrow + 1);
+ }
+
+ ()
+}
+
+
+sub activate {
+ my ($self, $search) = @_;
+
+ $self->{active} = 1;
+
+ $self->{select} = '';
+ $self->{dollar} = 0;
+ $self->{move_to} = 0;
+
+ if ($search) {
+ $self->{search} = '?';
+ $self->{search_dir} = -1;
+ $self->{search_mode} = 1;
+ } else {
+ $self->{search} = '';
+ $self->{search_mode} = 0;
+ }
+
+ ($self->{oldcr}, $self->{oldcc}) = $self->screen_cur();
+ $self->{old_view_start} = $self->view_start();
+ $self->{old_pty_ev_events} = $self->pty_ev_events(urxvt::EV_NONE);
+
+ my $line = $self->line($self->{oldcr});
+ $self->{offset} = $line->offset_of($self->{oldcr}, $self->{oldcc});
+
+ $self->selection_beg(1, 0);
+ $self->selection_end(1, 0);
+
+ $self->enable(
+ key_press => \&key_press,
+ refresh_begin => \&refresh,
+ refresh_end => \&refresh,
+ tt_write => \&tt_write,
+ );
+
+ if ($self->{offset} >= $line->l) {
+ $self->{offset} = $line->l > 0 ? $line->l - 1 : 0;
+ $self->screen_cur($line->coord_of($self->{offset}));
+ $self->want_refresh();
+ }
+
+ $self->{overlay_len} = 0;
+ status_area($self);
+
+ ()
+}
+
+
+sub deactivate {
+ my ($self) = @_;
+
+ $self->selection_beg(1, 0);
+ $self->selection_end(1, 0);
+
+ delete $self->{overlay} if $self->{overlay};
+ delete $self->{selection} if $self->{selection};
+
+ $self->disable("key_press", "refresh_begin", "refresh_end", "tt_write");
+ $self->screen_cur($self->{oldcr}, $self->{oldcc});
+ $self->view_start($self->{old_view_start});
+ $self->pty_ev_events($self->{old_pty_ev_events});
+
+ $self->want_refresh();
+
+ $self->{active} = 0;
+
+ ()
+}
+
+
+sub status_area {
+ my ($self, $extra) = @_;
+ my ($stat, $stat_len);
+
+ if ($self->{search}) {
+ $stat_len = $self->ncol;
+ $stat = $self->{search} . ' ' x ($stat_len - length($self->{search}));
+ } else {
+ if ($self->{select}) {
+ $stat = "-V" . ($self->{select} ne 'n' ? uc($self->{select}) : "") . "- ";
+ }
+
+ if ($self->top_row == 0) {
+ $stat .= "All";
+ } elsif ($self->view_start() == $self->top_row) {
+ $stat .= "Top";
+ } elsif ($self->view_start() == 0) {
+ $stat .= "Bot";
+ } else {
+ $stat .= sprintf("%2d%%",
+ ($self->top_row - $self->view_start) * 100 / $self->top_row);
+ }
+
+ $stat = "$extra $stat" if $extra;
+ $stat_len = length($stat);
+ }
+
+ if (!$self->{overlay} || $self->{overlay_len} != $stat_len) {
+ delete $self->{overlay} if $self->{overlay};
+ $self->{overlay} = $self->overlay(-1, -1, $stat_len, 1,
+ urxvt::OVERLAY_RSTYLE, 0);
+ $self->{overlay_len} = $stat_len;
+ }
+
+ $self->{overlay}->set(0, 0, $self->special_encode($stat));
+ $self->{overlay}->show();
+
+ ()
+}
+
+
+sub toggle_select {
+ my ($self, $mode) = @_;
+
+ if ($self->{select} eq $mode) {
+ $self->{select} = '';
+ } else {
+ if (not $self->{select}) {
+ ($self->{ar}, $self->{ac}) = $self->screen_cur();
+ }
+ $self->{select} = $mode;
+ }
+
+ status_area($self);
+ $self->want_refresh();
+
+ ()
+}
+
+
+sub calc_span {
+ my ($self) = @_;
+ my ($cr, $cc) = $self->screen_cur();
+ my ($br, $bc, $er, $ec);
+
+ if ($self->{select} eq 'b') {
+ $br = $self->line($cr)->beg;
+ $bc = $self->line($cr)->offset_of($cr, $cc);
+ $er = $self->line($self->{ar})->beg;
+ $ec = $self->line($self->{ar})->offset_of($self->{ar}, $self->{ac});
+ ($br, $er) = ($er, $br) if $br > $er;
+ ($bc, $ec) = ($ec, $bc) if $bc > $ec;
+ } else {
+ if ($cr < $self->{ar}) {
+ ($br, $bc, $er, $ec) = ($cr, $cc, $self->{ar}, $self->{ac});
+ } elsif ($cr > $self->{ar}) {
+ ($br, $bc, $er, $ec) = ($self->{ar}, $self->{ac}, $cr, $cc);
+ } else {
+ ($br, $er) = ($cr, $cr);
+ ($bc, $ec) = $cc < $self->{ac} ? ($cc, $self->{ac}) : ($self->{ac}, $cc);
+ }
+ }
+
+ if ($self->{select} eq 'l') {
+ ($br, $er) = ($self->line($br)->beg, $self->line($er)->end);
+ ($bc, $ec) = (0, $self->ncol);
+ } else {
+ ++$ec;
+ }
+
+ return ($br, $bc, $er, $ec);
+}