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ptked.bat
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2004-06-01
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@rem = '--*-Perl-*--
@echo off
if "%OS%" == "Windows_NT" goto WinNT
perl -x -S "%0" %1 %2 %3 %4 %5 %6 %7 %8 %9
goto endofperl
:WinNT
perl -x -S %0 %*
if NOT "%COMSPEC%" == "%SystemRoot%\system32\cmd.exe" goto endofperl
if %errorlevel% == 9009 echo You do not have Perl in your PATH.
if errorlevel 1 goto script_failed_so_exit_with_non_zero_val 2>nul
goto endofperl
@rem ';
#!/usr/local/bin/perl -w
#line 15
use strict;
use Socket;
use IO::Socket;
use Cwd;
use Getopt::Long;
use vars qw($VERSION $portfile);
$VERSION = sprintf '4.%03d', q$Revision: #29 $ =~ /\D(\d+)\s*$/;
my %opt;
INIT
{
my $home = $ENV{'HOME'} || $ENV{'HOMEDRIVE'}.$ENV{'HOMEPATH'};
$portfile = "$home/.ptkedsn";
my $port = $ENV{'PTKEDPORT'};
return if $^C;
GetOptions(\%opt,qw(server! encoding=s));
unless (defined $port)
{
if (open(SN,"$portfile"))
{
$port = <SN>;
close(SN);
}
}
if (defined $port)
{
my $sock = IO::Socket::INET->new(PeerAddr => 'localhost',
PeerPort => $port, Proto => 'tcp');
if ($sock)
{
binmode($sock);
$sock->autoflush;
foreach my $file (@ARGV)
{
unless (print $sock "$file\n")
{
die "Cannot print $file to socket:$!";
}
print "Requested '$file'\n";
}
$sock->close || die "Cannot close socket:$!";
exit(0);
}
else
{
warn "Cannot connect to server on $port:$!";
}
}
}
use Tk;
use Tk::DropSite qw(XDND Sun);
use Tk::DragDrop qw(XDND Sun);
use Tk::widgets qw(TextUndo Scrollbar Menu Dialog);
# use Tk::ErrorDialog;
{
package Tk::TextUndoPtked;
@Tk::TextUndoPtked::ISA = qw(Tk::TextUndo);
Construct Tk::Widget 'TextUndoPtked';
sub Save {
my $w = shift;
$w->SUPER::Save(@_);
$w->toplevel->title($w->FileName);
}
sub Load {
my $w = shift;
$w->SUPER::Load(@_);
$w->toplevel->title($w->FileName);
}
sub MenuLabels { shift->SUPER::MenuLabels, 'Encoding' }
sub Encoding
{
my ($w,$enc) = @_;
if (@_ > 1)
{
$enc = $w->getEncoding($enc) unless ref($enc);
$w->{ENCODING} = $enc;
$enc = $enc->name;
$w->PerlIO_layers(":encoding($enc)");
}
return $w->{ENCODING};
}
sub EncodingMenuItems
{
my ($w) = @_;
return [ [ command => 'System', -command => [ $w, Encoding => Tk::SystemEncoding()->name ]],
[ command => 'UTF-8', -command => [ $w, Encoding => 'UTF-8'] ],
[ command => 'iso-8859-1', -command => [ $w, Encoding => 'iso8859-1'] ],
[ command => 'iso-8859-15', -command => [ $w, Encoding => 'iso8859-15'] ],
];
}
}
my $top = MainWindow->new();
if ($opt{'server'})
{
my $sock = IO::Socket::INET->new(Listen => 5, Proto => 'tcp');
die "Cannot open listen socket:$!" unless defined $sock;
binmode($sock);
my $port = $sock->sockport;
$ENV{'PTKEDPORT'} = $port;
open(SN,">$portfile") || die "Cannot open $portfile:$!";
print SN $port;
close(SN);
print "Accepting connections on $port\n";
$top->fileevent($sock,'readable',
sub
{
print "accepting $sock\n";
my $client = $sock->accept;
if (defined $client)
{
binmode($client);
print "Connection $client\n";
$top->fileevent($client,'readable',[\&EditRequest,$client]);
}
});
}
Tk::Event::HandleSignals();
$SIG{'INT'} = sub { $top->WmDeleteWindow };
$top->iconify;
$top->optionAdd('*TextUndoPtked.Background' => '#fff5e1');
$top->fontCreate('ptked',-family => 'courier', -size => ($^O eq 'MSWin32' ? 11 : -12),
-weight => 'normal', -slant => 'roman');
$top->optionAdd('*TextUndoPtked.Font' => 'ptked');
foreach my $file (@ARGV)
{
Create_Edit($file);
}
sub EditRequest
{
my ($client) = @_;
local $_;
while (<$client>)
{
chomp($_);
print "'$_'\n",
Create_Edit($_);
}
warn "Odd $!" unless eof($client);
$top->fileevent($client,'readable','');
print "Close $client\n";
$client->close;
}
MainLoop;
unlink("$portfile");
exit(0);
sub Create_Edit
{
my $path = shift;
my $ed = $top->Toplevel(-title => $path);
$ed->withdraw;
$top->{'Edits'}++;
$ed->OnDestroy([\&RemoveEdit,$top]);
my $t = $ed->Scrolled('TextUndoPtked', -wrap => 'none',
-scrollbars => 'se', # both required till optional fixed!
);
$t->pack(-expand => 1, -fill => 'both');
$t = $t->Subwidget('scrolled');
$t->Encoding($opt{encoding}) if $opt{encoding};
my $menu = $t->menu;
$menu->cascade(-label => '~Help', -menuitems => [
[Button => '~About...', -command => [\&About,$ed]],
]);
$ed->configure(-menu => $menu);
my $dd = $t->DragDrop(-event => '<Meta-B1-Motion>');
$t->bind(ref($t),'<Meta-B1-Motion>',\&Ouch);
$t->bind(ref($t),'<Meta-ButtonPress>',\&Ouch);
$t->bind(ref($t),'<Meta-ButtonRelease>',\&Ouch);
$dd->configure(-startcommand =>
sub
{
return 1 unless (eval { $t->tagNextrange(sel => '1.0','end')});
$dd->configure(-text => $t->get('sel.first','sel.last'));
});
$t->DropSite(-motioncommand =>
sub
{ my ($x,$y) = @_;
$t->markSet(insert => "\@$x,$y");
},
-dropcommand => [\&HandleDrop,$t],
);
$ed->protocol('WM_DELETE_WINDOW',[ConfirmExit => $t]);
$t->bind('<F3>',\&DoFind);
$ed->idletasks;
if (-e $path)
{
$t->Load($path);
}
else
{
$t->FileName($path);
}
$ed->deiconify;
$t->update;
$t->focus;
}
sub Ouch
{
warn join(',','Ouch',@_);
}
sub RemoveEdit
{
my $top = shift;
if (--$top->{'Edits'} == 0)
{
$top->destroy unless $opt{'s'};
}
}
sub HandleDrop
{my ($t,$seln,$x,$y) = @_;
# warn join(',',Drop => @_);
my $string;
Tk::catch { $string = $t->SelectionGet(-selection => $seln,'FILE_NAME') };
if ($@)
{
Tk::catch { $string = $t->SelectionGet(-selection => $seln) };
if ($@)
{
my @targets = $t->SelectionGet(-selection => $seln, 'TARGETS');
$t->messageBox(-text => "Targets : ".join(' ',@targets));
}
else
{
$t->markSet(insert => "\@$x,$y");
$t->insert(insert => $string);
}
}
else
{
Create_Edit($string);
}
}
my $str;
sub DoFind
{
my $t = shift;
$str = shift if (@_);
my $posn = $t->index('insert+1c');
$t->tag('remove','sel','1.0','end');
local $_;
while ($t->compare($posn,'<','end'))
{
my ($line,$col) = split(/\./,$posn);
$_ = $t->get("$line.0","$posn lineend");
pos($_) = $col;
if (/\G(.*)$str/g)
{
$col += length($1);
$posn = "$line.$col";
$t->SetCursor($posn);
$t->tag('add','sel',$posn,"$line.".pos($_));
$t->focus;
return;
}
$posn = $t->index("$posn lineend + 1c");
}
}
sub AskFind
{
my ($t) = @_;
unless (exists $t->{'AskFind'})
{
my $d = $t->{'AskFind'} = $t->Toplevel(-popover => 'cursor', -popanchor => 'nw');
$d->title('Find...');
$d->withdraw;
$d->transient($t->toplevel);
my $e = $d->Entry->pack;
$e->bind('<Return>', sub { $d->withdraw; DoFind($t,$e->get); });
$d->protocol(WM_DELETE_WINDOW =>[withdraw => $d]);
}
$t->{'AskFind'}->Popup;
$t->update;
$t->{'AskFind'}->focusNext;
}
sub About
{
my $mw = shift;
$mw->Dialog(-text => <<"END",-popover => $mw)->Show;
$0 version $VERSION
perl$]/Tk$Tk::VERSION
Copyright ⌐ 1995-2004 Nick Ing-Simmons. All rights reserved.
This package is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
END
}
__END__
=head1 NAME
ptked - an editor in Perl/Tk
=head1 SYNOPSIS
S< >B<ptked> [I<file-to-edit>]
=head1 DESCRIPTION
B<ptked> is a simple text editor based on perl/Tk's TextUndo widget.
=cut
__END__
:endofperl