summaryrefslogtreecommitdiffstats
path: root/Doc/perl/l2hinit.perl
blob: 89deed01f969ffc2278a6ba1c1dc0d57f26a387c (plain)
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
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
# LaTeX2HTML support base for use with Python documentation.

package main;

use L2hos;

$HTML_VERSION = 4.0;

$MAX_LINK_DEPTH = 2;
$ADDRESS = '';

$NO_FOOTNODE = 1;
$NUMBERED_FOOTNOTES = 1;

# Python documentation uses section numbers to support references to match
# in the printed and online versions.
#
$SHOW_SECTION_NUMBERS = 1;

$ICONSERVER = '.';
$IMAGE_TYPE = 'gif';

# Control where the navigation bars should show up:
$TOP_NAVIGATION = 1;
$BOTTOM_NAVIGATION = 1;
$AUTO_NAVIGATION = 0;

$BODYTEXT = '';
$CHILDLINE = "\n<p><br /></p><hr class='online-navigation' />\n";
$VERBOSITY = 0;

# default # of columns for the indexes
$INDEX_COLUMNS = 2;
$MODULE_INDEX_COLUMNS = 4;

$HAVE_MODULE_INDEX = 0;
$HAVE_GENERAL_INDEX = 0;
$HAVE_TABLE_OF_CONTENTS = 0;

$AESOP_META_TYPE = 'information';


# A little painful, but lets us clean up the top level directory a little,
# and not be tied to the current directory (as far as I can tell).  Testing
# an existing definition of $mydir is needed since it cannot be computed when
# run under mkhowto with recent versions of LaTeX2HTML, since this file is
# not read directly by LaTeX2HTML any more.  mkhowto is required to prepend
# the required definition at the top of the actual input file.
#
if (!defined $mydir) {
    use Cwd;
    use File::Basename;
    ($myname, $mydir, $myext) = fileparse(__FILE__, '\..*');
    chop $mydir;                        # remove trailing '/'
    $mydir = getcwd() . "$dd$mydir"
        unless $mydir =~ s|^/|/|;
}
$LATEX2HTMLSTYLES = "$mydir$envkey$LATEX2HTMLSTYLES";
push (@INC, $mydir);

($myrootname, $myrootdir, $myext) = fileparse($mydir, '\..*');
chop $myrootdir;


# Hackish way to get the appropriate paper-*/ directory into $TEXINPUTS;
# pass in the paper size (a4 or letter) as the environment variable PAPER
# to add the right directory.  If not given, the current directory is
# added instead for use with HOWTO processing.
#
if (defined $ENV{'PAPER'}) {
    $mytexinputs = "$myrootdir${dd}paper-$ENV{'PAPER'}$envkey";
}
else {
    $mytexinputs = getcwd() . $envkey;
}
$mytexinputs .= "$myrootdir${dd}texinputs";


# Change this variable to change the text added in "About this document...";
# this should be an absolute pathname to get it right.
#
$ABOUT_FILE = "$myrootdir${dd}html${dd}stdabout.dat";


sub custom_driver_hook {
    #
    # This adds the directory of the main input file to $TEXINPUTS; it
    # seems to be sufficiently general that it should be fine for HOWTO
    # processing.
    #
    # XXX This still isn't quite right; we should actually be inserting
    # $mytexinputs just before any empty entry in TEXINPUTS is one
    # exists instead of just concatenating the pieces like we do here.
    #
    my $file = $_[0];
    my($jobname, $dir, $ext) = fileparse($file, '\..*');
    $dir = L2hos->Make_directory_absolute($dir);
    $dir =~ s/$dd$//;
    $TEXINPUTS = "$dir$envkey$mytexinputs";
    # Push everything into $TEXINPUTS since LaTeX2HTML doesn't pick
    # this up on its own; we clear $ENV{'TEXINPUTS'} so the value set
    # for this by the main LaTeX2HTML script doesn't contain duplicate
    # directories.
    if ($ENV{'TEXINPUTS'}) {
        $TEXINPUTS .= "$envkey$ENV{'TEXINPUTS'}";
        $ENV{'TEXINPUTS'} = undef;
    }
    print "\nSetting \$TEXINPUTS to $TEXINPUTS\n";
}


# $CUSTOM_BUTTONS is only used for the module index link.
$CUSTOM_BUTTONS = '';

sub make_nav_sectref($$$) {
    my($label, $linktype, $title) = @_;
    if ($title) {
        if ($title =~ /\<[aA] /) {
            $title =~ s/\<[aA] /<a class="sectref" rel="$linktype" /;
            $title =~ s/ HREF=/ href=/;
        }
        else {
            $title = "<span class=\"sectref\">$title</span>";
        }
        return "<b class=\"navlabel\">$label:</b>\n$title\n";
    }
    return '';
}

@my_icon_tags = ();
$my_icon_tags{'next'} = 'Next Page';
$my_icon_tags{'next_page'} = 'Next Page';
$my_icon_tags{'previous'} = 'Previous Page';
$my_icon_tags{'previous_page'} = 'Previous Page';
$my_icon_tags{'up'} = 'Up One Level';
$my_icon_tags{'contents'} = 'Contents';
$my_icon_tags{'index'} = 'Index';
$my_icon_tags{'modules'} = 'Module Index';

@my_icon_names = ();
$my_icon_names{'previous_page'} = 'previous';
$my_icon_names{'next_page'} = 'next';

sub get_my_icon($) {
    my $name = $_[0];
    my $text = $my_icon_tags{$name};
    if ($my_icon_names{$name}) {
        $name = $my_icon_names{$name};
    }
    if ($text eq '') {
        $name = 'blank';
    }
    my $iconserver = ($ICONSERVER eq '.') ? '' : "$ICONSERVER/";
    return "<img src='$iconserver$name.$IMAGE_TYPE'\n  border='0'"
           . " height='32'  alt='$text' width='32' />";
}

sub unlinkify($) {
    my $text = "$_[0]";
    $text =~ s|</[aA]>||;
    $text =~ s|<a\s+[^>]*>||i;
    return $text;
}

sub use_icon($$$) {
    my($rel,$str,$title) = @_;
    if ($str) {
        my $s = "$str";
        if ($s =~ /\<tex2html_([a-z_]+)_visible_mark\>/) {
            my $r = get_my_icon($1);
            $s =~ s/\<tex2html_[a-z_]+_visible_mark\>/$r/;
        }
        $s =~ s/<[aA] /<a rel="$rel" title="$title"\n  /;
        $s =~ s/ HREF=/ href=/;
        return $s;
    }
    else {
        return get_my_icon('blank');
    }
}

sub make_nav_panel() {
    my $s;
    # new iconic         rel         iconic     page title
    my $next     = use_icon('next',     $NEXT,     unlinkify($NEXT_TITLE));
    my $up       = use_icon('parent',   $UP,       unlinkify($UP_TITLE));
    my $previous = use_icon('prev',     $PREVIOUS, unlinkify($PREVIOUS_TITLE));
    my $contents = use_icon('contents', $CONTENTS, 'Table of Contents');
    my $index    = use_icon('index',    $INDEX,    'Index');
    if (!$CUSTOM_BUTTONS) {
        $CUSTOM_BUTTONS = get_my_icon('blank');
    }
    $s = ('<table align="center" width="100%" cellpadding="0" cellspacing="2">'
          . "\n<tr>"
          # left-hand side
          . "\n<td class='online-navigation'>$previous</td>"
          . "\n<td class='online-navigation'>$up</td>"
          . "\n<td class='online-navigation'>$next</td>"
          # title box
          . "\n<td align=\"center\" width=\"100%\">$t_title</td>"
          # right-hand side
          . "\n<td class='online-navigation'>$contents</td>"
          # module index
          . "\n<td class='online-navigation'>$CUSTOM_BUTTONS</td>"
          . "\n<td class='online-navigation'>$index</td>"
          . "\n</tr></table>\n"
          # textual navigation
          . "<div class='online-navigation'>\n"
          . make_nav_sectref("Previous", "prev", $PREVIOUS_TITLE)
          . make_nav_sectref("Up", "parent", $UP_TITLE)
          . make_nav_sectref("Next", "next", $NEXT_TITLE)
          . "</div>\n"
          );
    # remove these; they are unnecessary and cause errors from validation
    $s =~ s/ NAME="tex2html\d+"\n */ /g;
    return $s;
}

sub add_child_links {
    my $toc = add_real_child_links(@_);
    $toc =~ s|\s*</[aA]>|</a>|g;
    $toc =~ s/ NAME=\"tex2html\d+\"\s*href=/ href=/gi;
    $toc =~ s|</UL>(\s*<BR( /)?>)?|</ul>|gi;
    if ($toc =~ / NAME=["']CHILD_LINKS["']/) {
        return "<div class='online-navigation'>\n$toc</div>\n";
    }
    return $toc;
}

sub get_version_text() {
    if ($PACKAGE_VERSION ne '' && $t_date) {
        return ("<span class=\"release-info\">"
                . "Release $PACKAGE_VERSION$RELEASE_INFO,"
                . " documentation updated on $t_date.</span>");
    }
    if ($PACKAGE_VERSION ne '') {
        return ("<span class=\"release-info\">"
                . "Release $PACKAGE_VERSION$RELEASE_INFO.</span>");
    }
    if ($t_date) {
        return ("<span class=\"release-info\">Documentation released on "
                . "$t_date.</span>");
    }
    return '';
}


sub top_navigation_panel() {
    return "\n<div id='top-navigation-panel' xml:id='top-navigation-panel'>\n"
           . make_nav_panel()
           . "<hr /></div>\n";
}

sub bot_navigation_panel() {
    return "\n<div class='online-navigation'>\n"
           . "<p></p><hr />\n"
           . make_nav_panel()
           . "</div>\n"
           . "<hr />\n"
           . get_version_text()
           . "\n";
}

sub add_link {
    # Returns a pair (iconic link, textual link)
    my($icon, $current_file, @link) = @_;
    my($dummy, $file, $title) = split($delim,
                                      $section_info{join(' ',@link)});
    if ($icon =~ /\<tex2html_([_a-z]+)_visible_mark\>/) {
        my $r = get_my_icon($1);
        $icon =~ s/\<tex2html_[_a-z]+_visible_mark\>/$r/;
    }
    if ($title && ($file ne $current_file)) {
        $title = purify($title);
        $title = get_first_words($title, $WORDS_IN_NAVIGATION_PANEL_TITLES);
        return (make_href($file, $icon), make_href($file, "$title"))
        }
    elsif ($icon eq get_my_icon('up') && $EXTERNAL_UP_LINK) {
        return (make_href($EXTERNAL_UP_LINK, $icon),
                make_href($EXTERNAL_UP_LINK, "$EXTERNAL_UP_TITLE"))
        }
    elsif ($icon eq get_my_icon('previous')
           && $EXTERNAL_PREV_LINK && $EXTERNAL_PREV_TITLE) {
        return (make_href($EXTERNAL_PREV_LINK, $icon),
                make_href($EXTERNAL_PREV_LINK, "$EXTERNAL_PREV_TITLE"))
        }
    elsif ($icon eq get_my_icon('next')
           && $EXTERNAL_DOWN_LINK && $EXTERNAL_DOWN_TITLE) {
        return (make_href($EXTERNAL_DOWN_LINK, $icon),
                make_href($EXTERNAL_DOWN_LINK, "$EXTERNAL_DOWN_TITLE"))
        }
    return (&inactive_img($icon), "");
}

sub add_special_link($$$) {
    my($icon, $file, $current_file) = @_;
    if ($icon =~ /\<tex2html_([_a-z]+)_visible_mark\>/) {
        my $r = get_my_icon($1);
        $icon =~ s/\<tex2html_[_a-z]+_visible_mark\>/$r/;
    }
    return (($file && ($file ne $current_file))
            ? make_href($file, $icon)
            : undef)
}

# The img_tag() function seems only to be called with the parameter
# 'anchor_invisible_mark', which we want to turn into ''.  Since
# replace_icon_marks() is the only interesting caller, and all it really
# does is call img_tag(), we can just define the hook alternative to be
# a no-op instead.
#
sub replace_icons_hook {}

sub do_cmd_arabic {
    # get rid of that nasty <SPAN CLASS="arabic">...</SPAN>
    my($ctr, $val, $id, $text) = &read_counter_value($_[0]);
    return ($val ? farabic($val) : "0") . $text;
}


sub gen_index_id($$) {
    # this is used to ensure common index key generation and a stable sort
    my($str, $extra) = @_;
    sprintf('%s###%s%010d', $str, $extra, ++$global{'max_id'});
}

sub insert_index($$$$$) {
    my($mark, $datafile, $columns, $letters, $prefix) = @_;
    my $prog = "$myrootdir/tools/buildindex.py";
    my $index;
    if ($letters) {
        $index = `$prog --columns $columns --letters $datafile`;
    }
    else {
        $index = `$prog --columns $columns $datafile`;
    }
    if (!s/$mark/$prefix$index/) {
        print "\nCould not locate index mark: $mark";
    }
}

sub add_idx() {
    print "\nBuilding HTML for the index ...";
    close(IDXFILE);
    insert_index($idx_mark, 'index.dat', $INDEX_COLUMNS, 1, '');
}


$idx_module_mark = '<tex2html_idx_module_mark>';
$idx_module_title = 'Module Index';

sub add_module_idx() {
    print "\nBuilding HTML for the module index ...";
    my $key;
    my $first = 1;
    my $prevplat = '';
    my $allthesame = 1;
    my $prefix = '';
    foreach $key (keys %Modules) {
        $key =~ s/<tt>([a-zA-Z0-9._]*)<\/tt>/$1/;
        my $plat = "$ModulePlatforms{$key}";
        $plat = ''
          if ($plat eq $IGNORE_PLATFORM_ANNOTATION);
        if (!$first) {
            $allthesame = 0
              if ($prevplat ne $plat);
        }
        else { $first = 0; }
        $prevplat = $plat;
    }
    open(MODIDXFILE, '>modindex.dat') || die "\n$!\n";
    foreach $key (keys %Modules) {
        # dump the line in the data file; just use a dummy seqno field
        my $nkey = $1;
        my $moditem = "$Modules{$key}";
        my $plat = '';
        $key =~ s/<tt>([a-zA-Z0-9._]*)<\/tt>/$1/;
        if ($ModulePlatforms{$key} && !$allthesame) {
            $plat = (" <em>(<span class=\"platform\">$ModulePlatforms{$key}"
                     . '</span>)</em>');
        }
        print MODIDXFILE $moditem . $IDXFILE_FIELD_SEP
              . "<tt class=\"module\">$key</tt>$plat###\n";
    }
    close(MODIDXFILE);

    if ($GLOBAL_MODULE_INDEX) {
        $prefix = <<MODULE_INDEX_PREFIX;

<p> This index only lists modules documented in this manual.
  The <em class="citetitle"><a href="$GLOBAL_MODULE_INDEX">Global Module
     Index</a></em> lists all modules that are documented in this set
  of manuals.</p>
MODULE_INDEX_PREFIX
    }
    if (!$allthesame) {
        $prefix .= <<PLAT_DISCUSS;

<p> Some module names are followed by an annotation indicating what
platform they are available on.</p>

PLAT_DISCUSS
    }
    insert_index($idx_module_mark, 'modindex.dat', $MODULE_INDEX_COLUMNS, 0,
                 $prefix);
}

# replace both indexes as needed:
sub add_idx_hook {
    add_idx() if (/$idx_mark/);
    process_python_state();
    if ($MODULE_INDEX_FILE) {
        local ($_);
        open(MYFILE, "<$MODULE_INDEX_FILE");
        sysread(MYFILE, $_, 1024*1024);
        close(MYFILE);
        add_module_idx();
        open(MYFILE,">$MODULE_INDEX_FILE");
        print MYFILE $_;
        close(MYFILE);
    }
}


# In addition to the standard stuff, add label to allow named node files and
# support suppression of the page complete (for HTML Help use).
$MY_CONTENTS_PAGE = '';
sub do_cmd_tableofcontents {
    local($_) = @_;
    $TITLE = $toc_title;
    $tocfile = $CURRENT_FILE;
    my($closures, $reopens) = preserve_open_tags();
    anchor_label('contents', $CURRENT_FILE, $_);        # this is added
    $MY_CONTENTS_PAGE = "$CURRENT_FILE";
    join('', "\\tableofchildlinks[off]", $closures
         , make_section_heading($toc_title, 'h2'), $toc_mark
         , $reopens, $_);
}
# In addition to the standard stuff, add label to allow named node files.
sub do_cmd_listoffigures {
    local($_) = @_;
    $TITLE = $lof_title;
    $loffile = $CURRENT_FILE;
    my($closures, $reopens) = preserve_open_tags();
    anchor_label('lof', $CURRENT_FILE, $_);             # this is added
    join('', "<br />\n", $closures
         , make_section_heading($lof_title, 'h2'), $lof_mark
         , $reopens, $_);
}
# In addition to the standard stuff, add label to allow named node files.
sub do_cmd_listoftables {
    local($_) = @_;
    $TITLE = $lot_title;
    $lotfile = $CURRENT_FILE;
    my($closures, $reopens) = preserve_open_tags();
    anchor_label('lot', $CURRENT_FILE, $_);             # this is added
    join('', "<br />\n", $closures
         , make_section_heading($lot_title, 'h2'), $lot_mark
         , $reopens, $_);
}
# In addition to the standard stuff, add label to allow named node files.
sub do_cmd_textohtmlinfopage {
    local($_) = @_;
    if ($INFO) {                                        #
        anchor_label("about",$CURRENT_FILE,$_);         # this is added
    }                                                   #
    my $the_version = '';                               # and the rest is
    if ($t_date) {                                      # mostly ours
        $the_version = ",\n$t_date";
        if ($PACKAGE_VERSION) {
            $the_version .= ", Release $PACKAGE_VERSION$RELEASE_INFO";
        }
    }
    my $about;
    open(ABOUT, "<$ABOUT_FILE") || die "\n$!\n";
    sysread(ABOUT, $about, 1024*1024);
    close(ABOUT);
    $_ = (($INFO == 1)
          ? join('',
                 $close_all,
                 "<strong>$t_title</strong>$the_version\n",
                 $about,
                 $open_all, $_)
          : join('', $close_all, $INFO,"\n", $open_all, $_));
    $_;
}

$GENERAL_INDEX_FILE = '';
$MODULE_INDEX_FILE = '';

# $idx_mark will be replaced with the real index at the end
sub do_cmd_textohtmlindex {
    local($_) = @_;
    $TITLE = $idx_title;
    $idxfile = $CURRENT_FILE;
    $GENERAL_INDEX_FILE = "$CURRENT_FILE";
    if (%index_labels) { make_index_labels(); }
    if (($SHORT_INDEX) && (%index_segment)) { make_preindex(); }
    else { $preindex = ''; }
    my $heading = make_section_heading($idx_title, 'h2') . $idx_mark;
    my($pre, $post) = minimize_open_tags($heading);
    anchor_label('genindex',$CURRENT_FILE,$_);          # this is added
    return "<br />\n" . $pre . $_;
}

# $idx_module_mark will be replaced with the real index at the end
sub do_cmd_textohtmlmoduleindex {
    local($_) = @_;
    $TITLE = $idx_module_title;
    anchor_label('modindex', $CURRENT_FILE, $_);
    $MODULE_INDEX_FILE = "$CURRENT_FILE";
    $_ = ('<p></p>' . make_section_heading($idx_module_title, 'h2')
          . $idx_module_mark . $_);
    return $_;
}

# The bibliography and the index should be treated as separate
# sections in their own HTML files. The \bibliography{} command acts
# as a sectioning command that has the desired effect. But when the
# bibliography is constructed manually using the thebibliography
# environment, or when using the theindex environment it is not
# possible to use the normal sectioning mechanism. This subroutine
# inserts a \bibliography{} or a dummy \textohtmlindex command just
# before the appropriate environments to force sectioning.

# XXX   This *assumes* that if there are two {theindex} environments,
#       the first is the module index and the second is the standard
#       index.  This is sufficient for the current Python documentation,
#       but that's about it.

sub add_bbl_and_idx_dummy_commands {
    my $id = $global{'max_id'};

    if (/[\\]tableofcontents/) {
        $HAVE_TABLE_OF_CONTENTS = 1;
    }
    s/([\\]begin\s*$O\d+$C\s*thebibliography)/$bbl_cnt++; $1/eg;
    s/([\\]begin\s*$O\d+$C\s*thebibliography)/$id++; "\\bibliography$O$id$C$O$id$C $1"/geo;
    my(@parts) = split(/\\begin\s*$O\d+$C\s*theindex/);
    if (scalar(@parts) == 3) {
        # Be careful to re-write the string in place, since $_ is *not*
        # returned explicity;  *** nasty side-effect dependency! ***
        print "\nadd_bbl_and_idx_dummy_commands ==> adding general index";
        print "\nadd_bbl_and_idx_dummy_commands ==> adding module index";
        my $rx = "([\\\\]begin\\s*$O\\d+$C\\s*theindex[\\s\\S]*)"
          . "([\\\\]begin\\s*$O\\d+$C\\s*theindex)";
        s/$rx/\\textohtmlmoduleindex $1 \\textohtmlindex $2/o;
        # Add a button to the navigation areas:
        $CUSTOM_BUTTONS .= ('<a href="modindex.html" title="Module Index">'
                            . get_my_icon('modules')
                            . '</a>');
        $HAVE_MODULE_INDEX = 1;
        $HAVE_GENERAL_INDEX = 1;
    }
    elsif (scalar(@parts) == 2) {
        print "\nadd_bbl_and_idx_dummy_commands ==> adding general index";
        my $rx = "([\\\\]begin\\s*$O\\d+$C\\s*theindex)";
        s/$rx/\\textohtmlindex $1/o;
        $HAVE_GENERAL_INDEX = 1;
    }
    elsif (scalar(@parts) == 1) {
        print "\nadd_bbl_and_idx_dummy_commands ==> no index found";
        $CUSTOM_BUTTONS .= get_my_icon('blank');
        $global{'max_id'} = $id; # not sure why....
        s/([\\]begin\s*$O\d+$C\s*theindex)/\\textohtmlindex $1/o;
            s/[\\]printindex/\\textohtmlindex /o;
    }
    else {
        die "\n\nBad number of index environments!\n\n";
    }
    #----------------------------------------------------------------------
    lib_add_bbl_and_idx_dummy_commands()
        if defined(&lib_add_bbl_and_idx_dummy_commands);
}

# The bibliographic references, the appendices, the lists of figures
# and tables etc. must appear in the contents table at the same level
# as the outermost sectioning command. This subroutine finds what is
# the outermost level and sets the above to the same level;

sub set_depth_levels {
    # Sets $outermost_level
    my $level;
    #RRM:  do not alter user-set value for  $MAX_SPLIT_DEPTH
    foreach $level ("part", "chapter", "section", "subsection",
                    "subsubsection", "paragraph") {
        last if (($outermost_level) = /\\($level)$delimiter_rx/);
    }
    $level = ($outermost_level ? $section_commands{$outermost_level} :
              do {$outermost_level = 'section'; 3;});

    #RRM:  but calculate value for $MAX_SPLIT_DEPTH when a $REL_DEPTH was given
    if ($REL_DEPTH && $MAX_SPLIT_DEPTH) {
        $MAX_SPLIT_DEPTH = $level + $MAX_SPLIT_DEPTH;
    } elsif (!($MAX_SPLIT_DEPTH)) { $MAX_SPLIT_DEPTH = 1 };

    %unnumbered_section_commands = ('tableofcontents' => $level,
                                    'listoffigures' => $level,
                                    'listoftables' => $level,
                                    'bibliography' => $level,
                                    'textohtmlindex' => $level,
                                    'textohtmlmoduleindex' => $level);
    $section_headings{'textohtmlmoduleindex'} = 'h1';

    %section_commands = (%unnumbered_section_commands,
                         %section_commands);

    make_sections_rx();
}


# This changes the markup used for {verbatim} environments, and is the
# best way I've found that ensures the <dl> goes on the outside of the
# <pre>...</pre>.
#
# Note that this *must* be done in the init file, not the python.perl
# style support file.  The %declarations must be set before
# initialize() is called in the main LaTeX2HTML script (which happens
# before style files are loaded).
#
%declarations = ('preform' => '<div class="verbatim"><pre></pre></div>',
                 %declarations);


# This is a modified version of what's provided by LaTeX2HTML; see the
# comment on the middle stanza for an explanation of why we keep our
# own version.
#
# This routine must be called once on the text only,
# else it will "eat up" sensitive constructs.
sub text_cleanup {
    # MRO: replaced $* with /m
    s/(\s*\n){3,}/\n\n/gom;	# Replace consecutive blank lines with one
    s/<(\/?)P>\s*(\w)/<$1P>\n$2/gom;      # clean up paragraph starts and ends
    s/$O\d+$C//go;		# Get rid of bracket id's
    s/$OP\d+$CP//go;		# Get rid of processed bracket id's
    s/(<!)?--?(>)?/(length($1) || length($2)) ? "$1--$2" : "-"/ge;
    # Spacing commands
    s/\\( |$)/ /go;
    #JKR: There should be no more comments in the source now.
    #s/([^\\]?)%/$1/go;        # Remove the comment character
    # Cannot treat \, as a command because , is a delimiter ...
    s/\\,/ /go;
    # Replace tilde's with non-breaking spaces
    s/ *~/&nbsp;/g;

    # This is why we have this copy of this routine; the following
    # isn't so desirable as the author/maintainers of LaTeX2HTML seem
    # to think.  It's not commented out in the main script, so we have
    # to override the whole thing.  In particular, we don't want empty
    # table cells to disappear.

    ### DANGEROUS ?? ###
    # remove redundant (not <P></P>) empty tags, incl. with attributes
    #s/\n?<([^PD >][^>]*)>\s*<\/\1>//g;
    #s/\n?<([^PD >][^>]*)>\s*<\/\1>//g;
    # remove redundant empty tags (not </P><P> or <TD> or <TH>)
    #s/<\/(TT|[^PTH][A-Z]+)><\1>//g;
    #s/<([^PD ]+)(\s[^>]*)?>\n*<\/\1>//g;

    #JCL(jcl-hex)
    # Replace ^^ special chars (according to p.47 of the TeX book)
    # Useful when coming from the .aux file (german umlauts, etc.)
    s/\^\^([^0-9a-f])/chr((64+ord($1))&127)/ge;
    s/\^\^([0-9a-f][0-9a-f])/chr(hex($1))/ge;
}

# This is used to map the link rel attributes LaTeX2HTML uses to those
# currently recommended by the W3C.
sub custom_REL_hook {
    my($rel,$junk) = @_;
    return 'parent' if $rel eq 'up';
    return 'prev' if $rel eq 'previous';
    return $rel;
}

# This is added to get rid of the long comment that follows the
# doctype declaration; MSIE5 on NT4 SP4 barfs on it and drops the
# content of the page.
$MY_PARTIAL_HEADER = '';
sub make_head_and_body($$) {
    my($title, $body) = @_;
    $body = " $body" unless ($body eq '');
    my $DTDcomment = '';
    my($version, $isolanguage) = ($HTML_VERSION, 'EN');
    my %isolanguages = (  'english',  'EN'   , 'USenglish', 'EN.US'
                        , 'original', 'EN'   , 'german'   , 'DE'
                        , 'austrian', 'DE.AT', 'french'   , 'FR'
                        , 'spanish',  'ES');
    $isolanguage = $isolanguages{$default_language};
    $isolanguage = 'EN' unless $isolanguage;
    $title = &purify($title,1);
    eval("\$title = ". $default_title ) unless ($title);

    # allow user-modification of the <title> tag; thanks Dan Young
    if (defined &custom_TITLE_hook) {
        $title = &custom_TITLE_hook($title, $toc_sec_title);
    }

    if ($DOCTYPE =~ /\/\/[\w\.]+\s*$/) { # language spec included
        $DTDcomment = "<!DOCTYPE html PUBLIC \"$DOCTYPE\">\n";
    } else {
        $DTDcomment = "<!DOCTYPE html PUBLIC \"$DOCTYPE//"
            . ($ISO_LANGUAGE ? $ISO_LANGUAGE : $isolanguage) . "\">\n";
    }
    if ($MY_PARTIAL_HEADER eq '') {
        my $favicon = '';
        if ($FAVORITES_ICON) {
            my($myname, $mydir, $myext) = fileparse($FAVORITES_ICON, '\..*');
            my $favtype = '';
            if ($myext eq '.gif' || $myext eq '.png') {
                $myext =~ s/^[.]//;
                $favtype = " type=\"image/$myext\"";
            }
            $favicon = (
                "\n<link rel=\"SHORTCUT ICON\" href=\"$FAVORITES_ICON\""
                . "$favtype />");
        }
        $STYLESHEET = $FILE.".css" unless $STYLESHEET;
        $MY_PARTIAL_HEADER = join('',
            ($DOCTYPE ? $DTDcomment : ''),
            "<html>\n<head>",
            ($BASE ? "\n<base href=\"$BASE\" />" : ''),
            "\n<link rel=\"STYLESHEET\" href=\"$STYLESHEET\" type='text/css'",
            " />",
            $favicon,
            ($EXTERNAL_UP_LINK
             ? ("\n<link rel='start' href='" . $EXTERNAL_UP_LINK
                . ($EXTERNAL_UP_TITLE ?
                   "' title='$EXTERNAL_UP_TITLE' />" : "' />"))
             : ''),
            "\n<link rel=\"first\" href=\"$FILE.html\"",
            ($t_title ? " title='$t_title'" : ''),
            ' />',
            ($HAVE_TABLE_OF_CONTENTS
             ? ("\n<link rel='contents' href='$MY_CONTENTS_PAGE'"
                . ' title="Contents" />')
             : ''),
            ($HAVE_GENERAL_INDEX
             ? ("\n<link rel='index' href='$GENERAL_INDEX_FILE'"
                . " title='Index' />")
             : ''),
            # disable for now -- Mozilla doesn't do well with multiple indexes
            # ($HAVE_MODULE_INDEX
            #  ? ("<link rel="index" href='$MODULE_INDEX_FILE'"
            #     . " title='Module Index' />\n")
            #  : ''),
            ($INFO
             # XXX We can do this with the Python tools since the About...
             # page always gets copied to about.html, even when we use the
             # generated node###.html page names.  Won't work with the
             # rest of the Python doc tools.
             ? ("\n<link rel='last' href='about.html'"
                . " title='About this document...' />"
                . "\n<link rel='help' href='about.html'"
                . " title='About this document...' />")
             : ''),
            $more_links_mark,
            "\n",
            ($CHARSET && $HTML_VERSION ge "2.1"
             ? ('<meta http-equiv="Content-Type" content="text/html; '
                . "charset=$CHARSET\" />\n")
             : ''),
            ($AESOP_META_TYPE
             ? "<meta name='aesop' content='$AESOP_META_TYPE' />\n" : ''));
    }
    if (!$charset && $CHARSET) {
        $charset = $CHARSET;
        $charset =~ s/_/\-/go;
    }
    join('',
         $MY_PARTIAL_HEADER,
         "<title>", $title, "</title>\n</head>\n<body$body>");
}

sub replace_morelinks {
    $more_links =~ s/ REL=/ rel=/g;
    $more_links =~ s/ HREF=/ href=/g;
    $more_links =~ s/<LINK /<link /g;
    $more_links =~ s/">/" \/>/g;
    $_ =~ s/$more_links_mark/$more_links/e;
}

1;      # This must be the last line