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#! perl -w
# Author: Bert Muennich
# Website: http://www.github.com/muennich/urxvt-perls
# Version: 2.0
# 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 ($self->{search}) {
if ($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);
}
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