This file is indexed.

/usr/share/perl5/Tk/Pod/SimpleBridge.pm is in libtk-pod-perl 0.9939-2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
require 5;
use strict;
package Tk::Pod::SimpleBridge;
# Interface between Tk::Pod and Pod::Simple

use vars qw($VERSION);
$VERSION = sprintf("%d.%02d", q$Revision: 5.3 $ =~ /(\d+)\.(\d+)/);

BEGIN {  # Make a DEBUG constant very first thing...
  if(defined &DEBUG) {
  } elsif(($ENV{'TKPODDEBUG'} || '') =~ m/^(\d+)/) { # untaint
    my $debug = $1;
    *DEBUG = sub () { $debug };
  } else {
    *DEBUG = sub () {0};
  }
}

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

use Pod::Simple::PullParser;
use Tk::Pod::Styles;
use vars qw(@ISA);
@ISA = qw(Tk::Pod::Styles);

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sub no_op {return}

sub process { # main routine: non-handler
  my ($w,$file_or_textref, $title) = @_;  # window, filename or string ref, title (optional)

  my $p = $w->{'pod_parser'} = Pod::Simple::PullParser->new;
  $p->set_source($file_or_textref);
  my $file = !ref $file_or_textref && $file_or_textref;

  $w->toplevel->Busy;
  $w->init_styles;

  my $process_no;
  $w->{ProcessNo}++;
  $process_no = $w->{ProcessNo};

  $w->{'sections'} = [];
  $w->{'pod_tag'} = '10000'; # counter
#XXX  my $style_stack = $w->{'style_stack'} ||= []; # || is probably harmful
  my $style_stack = $w->{'style_stack'} = [];

  my @pod_marks;

  DEBUG and $file and warn "Pull-parsing $file (process number $process_no)\n";
  $w->{'pod_title'} = $p->get_short_title || $title || $file;

  my($token, $tagname, $style);
  my $last_update = Tk::timeofday();
  my $current_line;
  while($token = $p->get_token) {

    DEBUG > 7 and warn " t:", $token->dump, "\n";
    if($token->can("attr_hash") && exists $token->attr_hash->{start_line}) {
      $current_line = $token->attr_hash->{start_line};
    }

    if($token->is_text) {
      DEBUG > 10 and warn " ->pod_text( ", $token->text, ",", $current_line, ")\n";
      $w->pod_text( $token, $current_line );

    } elsif($token->is_start) {
      ($tagname = $token->tagname ) =~ tr/-:./__/;
      $style    = "style_"     . $tagname;
      $tagname  = "pod_start_" . $tagname;
      DEBUG > 7 and warn " ->$tagname & ->$style\n";
      push @pod_marks, $w->index('end -1c');
       # Yes, save the start-point for every element,
       #  for feeding to its end-tag event.

      if( $w->can($style) ) {
        push @$style_stack,  $w->$style($token);
        DEBUG > 5 and warn "Style stack after adding ->$style: ",
         join("|", map join('.',@$_), @{ $w->{'style_stack'} } ), "\n";
      }

      &{ $w->can($tagname) || next }( $w, $token );
      DEBUG > 10 and warn "   back from ->$tagname\n";

    } elsif($token->is_end) {
      ($tagname = $token->tagname ) =~ tr/-:./__/;
      $style    = "style_"   . $tagname;
      $tagname  = "pod_end_" . $tagname;

      DEBUG > 7 and warn " ->$tagname & $style\n";

      &{ $w->can($tagname) || \&no_op }( $w, $token, pop(@pod_marks) );
       # the output of that pop() is the start-point of this element
      DEBUG > 10 and warn "   back from ->$tagname\n";

      if( $w->can($style) ) {
        pop @$style_stack;
        DEBUG > 5 and warn "Style stack after popping results of ->$style: ",
         join("|", map join('.',@$_), @{ $w->{'style_stack'} } ), "\n";
      }
    }

    if (Tk::timeofday() > $last_update+0.5) { # XXX make configurable
      $w->update;
      $last_update = Tk::timeofday();
      do { warn "ABORT!"; return } if $w->{ProcessNo} != $process_no;
    }

  }

  undef $p;
  delete $w->{'pod_parser'};
  DEBUG and $file and warn "Done rendering $file\n";

  $w->parent->add_section_menu if $w->parent->can('add_section_menu');
  $w->Callback('-poddone', $file);
  # set (invisible) insertion cursor to top of file
  $w->markSet(insert => '@0,0');
  $w->toplevel->Unbusy;
}

###########################################################################

sub pod_text {
  my($w, $t, $current_line) = @_;
  if( $w->{'pod_in_X'} ) {
    # no-op
  } else {
    # Emit it with whatever styles are in effect.

    my %attributes = (map @$_, @{ $w->{'style_stack'} } );
    DEBUG > 4 and warn "Inserting <", $t->text, "> with attributes: ",
      join('/', %attributes), "\n";

    my $startpoint = $w->index('end -1c');
    $w->insert( 'end -1c', $t->text, "start_line_" . $current_line );
   
    $w->tag(
      'add',
      $w->tag_for(\%attributes),
      $startpoint => 'end -1c'
    );
  }
  return;
}

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

sub pod_start_Document {
  $_[0]->toplevel->title( "Tkpod: " . $_[0]->{'pod_title'} . " (loading)");
  $_[0]->toplevel->update;
  # XXX  Is it bad form to manipulate the top level?
  return;
}

sub pod_end_Document {
  $_[0]->toplevel->title( "Tkpod: " . $_[0]->{'pod_title'});
  $_[0]->toplevel->update;
  # XXX  Is it bad form to manipulate the top level?
  return;
}

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

sub nlnl { $_[0]->insert( 'end -1c', "\n\n" ); $_[0]; }
sub nl { $_[0]->insert( 'end -1c', "\n" ); $_[0]; }

sub fake_unget_bold_text {
  require Pod::Simple::PullParserStartToken;
  require Pod::Simple::PullParserTextToken;
  require Pod::Simple::PullParserEndToken;

  $_[0]{'pod_parser'}->unget_token(
    Pod::Simple::PullParserStartToken->new('B'),
    Pod::Simple::PullParserTextToken->new($_[1]),
    Pod::Simple::PullParserEndToken->new('B'),
  );
}

sub pod_start_item_bullet {
  $_[0]->fake_unget_bold_text('* ');
}
sub pod_start_item_number {
  $_[0]->fake_unget_bold_text($_[1]->attr('number') . '. ');
}

sub pod_end_Para        { $_[0]->_indent($_[2]); $_[0]->nlnl }
sub pod_end_Verbatim    { $_[0]->_indent($_[2]); $_[0]->nlnl }
sub pod_end_item_bullet { $_[0]->_indent($_[2]); $_[0]->nlnl }
sub pod_end_item_number { $_[0]->_indent($_[2]); $_[0]->nlnl }
sub pod_end_item_text   { $_[0]->_indent($_[2]); $_[0]->nl }

sub pod_end_over_text   { $_[0]->nl } # XXX ok?

sub _indent {
  my ($w, $start) = @_;

  my $indent = 0;
  foreach my $s (@{ $w->{'style_stack'} }) {
    $indent += $s->[1] if @$s and $s->[0] eq 'indent';
     # yes, indent is special -- it always has to be first
  }
  $indent = 0 if $indent < 0;
  
  DEBUG > 5 and warn "Style stack giving indent of $indent for $start: ",
         join("|", map join('.',@$_), @{ $w->{'style_stack'} } ), "\n";
  
  my $tag = "Indent" . ($indent+0);
  unless (exists $w->{'pod_indent_tag_known'}{$tag}) {
    $w->{'pod_indent_tag_known'}{$tag} = 1;
    
    $indent *= 8;  # XXX  Why 8?
    
    $w->tag('configure' => $tag,
            '-lmargin2' => $indent . 'p',
            '-rmargin'  => $indent . 'p',
            '-lmargin1' => $indent . 'p'
           );
  }
  $w->tag('add', $tag, $start, 'end -1c');
  DEBUG > 3 and warn "Applying $tag to $start\n";
  return;
}


#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# All we need for X<...>, I think:
sub pod_start_X { $_[0]{'pod_in_X'}++; return; }
sub pod_end_X   { $_[0]{'pod_in_X'}--; return; }
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

sub tag_for {
  my($w, $attr) = @_;
  my $canonical_form =
    join( '~', map {; $_, $attr->{$_}}
      sort
        grep $_ ne 'indent',
          keys %$attr
  ) || 'nihil';
  
  return
    $w->{'known_tags'}{$canonical_form} ||=
    do {
      # initialize and return a new tagname
      DEBUG and warn "Making a tag for $canonical_form\n";
      $attr->{'family'}  = 'times'  unless exists $attr->{'family'};
      $attr->{'weight'}  = 'medium' unless exists $attr->{'weight'};
      $attr->{'slant'}   = 'r'      unless exists $attr->{'slant'};
      $attr->{'size'}    = 10       unless exists $attr->{'size'};
      $attr->{'spacing'} = '*'      unless exists $attr->{'spacing'};
      $attr->{'slant'}   = substr( $attr->{'slant'},0,1 );
      
      my $font_name = join ' ',
        $attr->{'family'},
        $attr->{'size'},
        ($attr->{'weight'} ne 'medium') ? 'bold'   : (),
        ($attr->{'slant'}  ne 'r'     ) ? 'italic' : (),
      ;
      
      DEBUG and warn "Defining new tag $canonical_form with font $font_name\n";
      
      $w->tagConfigure(
        $canonical_form,
        '-font' => $font_name,
        ('none' eq ($attr->{'wrap'} || '')) ? ('-wrap' => 'none') : (),
        $attr->{'underline'} ? ('-underline' => 'true') : (),
      );
      DEBUG > 10 and sleep 1;
      $canonical_form;
    }
  ;
}

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

sub pod_start_L {
  push @{ $_[0]->{'pod_L_attr_stack'} }, $_[1]->attr_hash;
}

sub pod_end_L   {
  my $w = $_[0];
  my $attr = pop @{ $w->{'pod_L_attr_stack'} };

  #$w->tag('add', 'L' , $_[2], 'end -1c');
  
  my $tag = # make a unique identifier for this guy:
    join "__", '!',
      map defined($_) ? $_ : '',
        @$attr{'type', 'to', 'section'};
    #"!" . $attr->{'to'}
  ;
  $tag =~ tr/ /_/;
  DEBUG > 2 and warn "Link-tag <$tag>\n";
  
  my $to      = $attr->{'to'}     ; # might be undef!
  my $section = $attr->{'section'}; # might be undef!
  
  my $methodname;
  if($attr->{'type'} eq 'pod')      {
    #$methodname = defined($to) ? 'Link' : 'Link_my_section';
    $methodname = 'Link';
  } elsif($attr->{'type'} eq 'url') {
    $methodname = 'Link_url'
  } elsif($attr->{'type'} eq 'man') {
    $methodname = 'Link_man'
  } else {
    DEBUG and warn "Unknown link-type $$attr{'type'}!\n";
  }

  $section = '' . $section if defined $section and ref $section;

  if(!defined $methodname) {
    DEBUG > 2 and warn "No method for $$attr{'type'} links.\n";
  } elsif($w->can($methodname)) {
    DEBUG > 2 and warn "Binding $tag to $methodname\n";
    $w->tag('bind', $tag, '<ButtonRelease-1>',
            [$w, $methodname, 'reuse', Tk::Ev('@%x,%y'), $to, $section]);
    $w->tag('bind', $tag, '<Shift-ButtonRelease-1>',
            [$w, $methodname, 'new',   Tk::Ev('@%x,%y'), $to, $section]);
    $w->tag('bind', $tag, '<ButtonRelease-2>',
            [$w, $methodname, 'new',   Tk::Ev('@%x,%y'), $to, $section]);
    $w->tag('bind', $tag, '<Enter>' => [$w, 'EnterLink']);
    $w->tag('bind', $tag, '<Leave>' => [$w, 'LeaveLink']);
    $w->tag('configure', $tag, '-underline' => 1, '-foreground' => 'blue' );
  } else {
    DEBUG > 2 and warn "Can't bind $tag to $methodname\n";
    # green for no-good
    $w->tag('configure', $tag, '-underline' => 1, '-foreground' => 'darkgreen' );
  }
  $w->tag('add', $tag, $_[2] ,'end -1c');

  return;
}

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

sub pod_start_head1 { $_[0]->_common_heading('head1'); }
sub pod_start_head2 { $_[0]->_common_heading('head2'); }
sub pod_start_head3 { $_[0]->_common_heading('head3'); }
sub pod_start_head4 { $_[0]->_common_heading('head4'); }

sub pod_end_head1 {  $_[0]->nlnl }
sub pod_end_head2 {  $_[0]->nlnl }
sub pod_end_head3 {  $_[0]->nlnl }
sub pod_end_head4 {  $_[0]->nlnl }

sub _common_heading {
  my $w = $_[0];
  my $p = $w->{'pod_parser'};
  my $end_tag = $_[1];
  
  my @to_put_back;
  my $text = '';
  my $token;
  my $in_X = 0;
  while($token = $p->get_token) {
    push @to_put_back, $token;
    if( $token->is_end ) {
      last if $token->is_tag($end_tag);
      --$in_X if $token->is_tag('X');
    } elsif($token->is_start) {
      ++$in_X if $token->is_tag('X');
    } elsif($token->is_text) {
      $text .= $token->text unless $in_X;
    }
    last if @to_put_back > 40; # too complex a heading!
  }

  if(length $text) {
    my $level;
    $end_tag =~ m/(\d+)$/ or die "WHAAAT?  $end_tag!?";
    $level = $1;
    push @{$w->{'sections'}}, [$level, $text, $w->index('end')];
    DEBUG and warn "Noting section heading head$level \"$text\".\n";
  }

  $p->unget_token(@to_put_back);
  return;
}

# ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1;
__END__

=encoding iso-8859-2

=head1 NAME

Tk::Pod::SimpleBridge -- render Pod::Simple events to a Tk::Pod window

=head1 SYNOPSIS

  [
    This is a class internal to Tk::Pod.
    No user-serviceable parts inside.
  ]

=head1 DESCRIPTION

This class contains methods that L<Tk::Pod> (specifically L<Tk::Pod::Text>)
uses to render a pod page's text into its window.  It uses L<Pod::Simple>
(specifically L<Pod::Simple::PullParser>) to do the parsing.

L<Tk::Pod> used to use Tk::Parse (a snapshot of an old old Pod-parser)
to do the Pod-parsing.  But it doesn't anymore -- it now uses L<Pod::Simple>
via this module.

=head1 COPYRIGHT AND DISCLAIMERS

Copyright (c) 2002 Sean M. Burke.  All rights reserved.

This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.

This program is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of
merchantability or fitness for a particular purpose.

=head1 AUTHOR

Sean M. Burke <F<sburke@cpan.org>>, with bits of Tk code cribbed from
the old Tk::Pod::Text code that Nick Ing-Simmons
<F<nick@ni-s.u-net.com>> originally wrote.

Current maintainer is Slaven ReziƦ <F<slaven@rezic.de>>.

=cut