/[PLies]/burst.pl
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Revision 1.16 - (hide annotations)
Fri May 11 14:17:27 2001 UTC (18 years, 3 months ago) by dpavlin
Branch: MAIN
Changes since 1.15: +34 -22 lines
File MIME type: text/plain
read local template infos.txt, progress bar can be turned off in it.

1 dpavlin 1.5 #!/usr/bin/perl
2 dpavlin 1.1 #
3 dpavlin 1.9 # PLies Copyright 2001 Dobrica Pavlinusic <dpavlin@rot13.org>
4 dpavlin 1.1 #
5     # this tool is based on SlideMaker and XLSies tool
6     # split a all.htm into slide*.htm
7     #
8     # For more information please see presentation about this tool on
9     # http://www.rot13.org/~dpavlin/presentations/XLSies_to_PLies/
10     #
11     # Copyright 1999 World Wide Web Consortium,
12     # (Massachusetts Institute of Technology, Institut
13     # National de Recherche en Informatique et en
14     # Automatique, Keio University). All Rights Reserved.
15     # This program is distributed under the W3C's
16     # Intellectual Property License. This program is
17     # distributed in the hope that it will be useful, but
18     # WITHOUT ANY WARRANTY; without even the implied
19     # warranty of MERCHANTABILITY or FITNESS FOR A
20     # PARTICULAR PURPOSE. See W3C License
21     # http://www.w3.org/Consortium/Legal/ for more details.
22     #
23     #
24     ##############################################################################
25     #
26     # slidemaker credits:
27     #
28     # Stephan Montigaud - stephan@w3.org
29     # created 970601
30     # modified by Pierre Fillault
31     # check the documentation at http://www.w3.org/Talks/YYMMsub/
32     #
33     # modified 19990505 Bert Bos: ALT text of prev/next arrows is now
34     # "prev"/"next" rather than the title of the prev/next slide; looks better
35     # in lynx.
36     #
37     # version: 4.14 - 19990719
38     # $Id: w3cburst.pl,v 1.41 1999/11/02 17:25:50 charles Exp $
39     #
40     #
41     # XLSies credits:
42     #
43     # Sami Lempinen - lempinen@iki.fi
44     # http://www.snowman.sgic.fi/ssl/xslies/
45 dpavlin 1.5 #
46     # Text::FastTemplate:
47     # Robert Lehr - bozzio@the-lehrs.com
48    
49     use Text::FastTemplate;
50 dpavlin 1.1
51     ##############################################################################
52     ## default values of variables
53     ##
54    
55 dpavlin 1.7 ## show debug output
56 dpavlin 1.14 my $debug=0;
57 dpavlin 1.7
58 dpavlin 1.1 ## default DOCTYPE added on the slides
59     $doctype = '<html xmlns="http://www.w3.org/TR/REC-html40">';
60    
61     ## name of raw HTML file containing the slides
62     $all = 'all.htm';
63    
64     ## table of content built from all.htm - also first page of the presentation
65     ## this is only the basename as we need to generate one toc for each style sheets
66     ## the main toc will not bear any more so the server can understand a request for '/'
67     ## the next ones will bear a number corresponding to the slide index
68     #$overview = 'Overview';
69     $overview = 'index';
70    
71     ## name of the file containing the parameters of the presentation
72     $infos = 'infos.txt';
73    
74     ## link to the logo printed on all the slides
75     $logoLink = '';
76    
77     ## default location of the logo - works when slidemaker is used as a package
78     $logoFile = '';
79    
80     ### localization
81     $loc_toc = "Table of contents";
82     $loc_by = "by";
83     $loc_amp = "&amp;"; # author separator
84     $loc_slide = "Slide";
85     $loc_of = "of"; # $loc_slide nr $loc_of total
86    
87     ## alternate representation of the logo
88     $logoAlt = '';
89    
90     ## default values set to none
91     $logoLink2 = ''; # link to a potential second reference
92     $logoFile2 = ''; # location of a second logo
93     $logoAlt2 = ''; # alternate representation of the second logo
94    
95     ## default accesskeys for navigation icons used in the slides
96     $prevKey = 'P'; # accesskey for previous slide
97     $nextKey = 'N'; # accesskey for next slide
98     $tocKey = 'C'; # accesskey for table of contents
99     $styleKey = 'S'; # accesskey for changing style sheets
100    
101     ## default author name
102     $author = 'Staff';
103    
104     ## default presentation title
105     $talkTitle = 'Talk';
106    
107     ## standard style sheets
108     $cssStandard = '../PLies/css/default.css';
109    
110 dpavlin 1.5 ## template name
111     $template = '../PLies/default';
112    
113 dpavlin 1.1 ## default charset use in meta tag http-equiv (undef to skip)
114     #$charset = 'ISO-8859-1';
115    
116     ## default <body> tag
117     $body = '<body>';
118    
119     ## number of entries on each TOC page
120     $toc_on_page = 10;
121    
122     ## use progress bar
123     $progress_bar = 1;
124    
125 dpavlin 1.2 ## content hight for each slide
126     $content_hight = "70%";
127    
128 dpavlin 1.1 ## end of default values for the presentation
129     ##############################################################################
130    
131     ## globals
132     my $last_toc_title;
133 dpavlin 1.5 my %page_data;
134     my %overview_data;
135 dpavlin 1.1
136 dpavlin 1.13 my $pack = 0;
137     my @pack_additional; # additional files to pack (pictures, logos...)
138    
139 dpavlin 1.1 ##############################################################################
140     ## reading user input from $infos
141     ##
142     @PARAM = @ARGV; # we keep this for backward compatibility with an old version
143     # of the slidemaker tool
144     #when the parameters were in Makefile or make.bat
145    
146 dpavlin 1.16 my @file;
147    
148     ##############################################################################
149     sub parse_infos {
150     my @file=@_;
151 dpavlin 1.7 do {
152     if ($file[0] && $file[0] =~ /^[^#\n\r]/) {
153     $file[0] =~ s/\n//; # remove UNIX \n
154     $file[0] =~ s/\r//; # remove WINDOWS \r
155 dpavlin 1.16 my ($var,$value) = split(/ *= */,$file[0],2);
156     $value=~s/'/\\'/g;
157     $cmd="\$$var = \'$value\';";
158     if (defined($value)) {
159     eval($cmd) || warn "problem with eval of: $cmd";
160     } else {
161     die "no value defined for $var";
162     }
163 dpavlin 1.13 print STDERR "$file[0]\n";
164 dpavlin 1.7 }
165     } while (shift(@file));
166 dpavlin 1.1 }
167 dpavlin 1.16 ##############################################################################
168    
169     # read parameters from infos.txt and put them in @PARAM
170     if (open(INFOS, $infos)) {
171     print STDERR "--- Reading parameters file $infos ---\n";
172     @file = <INFOS>;
173     parse_infos(@file);
174     }
175 dpavlin 1.1
176 dpavlin 1.16 # try to read local infos.txt for template
177     if (-f "$template/$infos" && open(INFOS,"$template/$infos")) {
178     print STDERR "--- Reading template parameters file $template/$infos ---\n";
179     @file = <INFOS>;
180     parse_infos(@file);
181     close(INFOS);
182 dpavlin 1.1 }
183    
184 dpavlin 1.16 ## @PARAM is now a table with the user preferences for his presentation
185    
186 dpavlin 1.1 ## use charset
187    
188     if ($charset) {
189     $http_equiv='<meta http-equiv="Content-type" content="text/html; charset='.$charset.'">';
190     } else {
191     $http_equiv='';
192     }
193    
194 dpavlin 1.13
195 dpavlin 1.1 ##############################################################################
196     ## read the raw html presentation
197     ##
198    
199     ## copy file in memory
200     my $sep = $/;
201     $/ = undef;
202 dpavlin 1.7 open(ALL, $all) || die "Error: Cannot open file: $all";
203 dpavlin 1.1 my $buf = <ALL>;
204 dpavlin 1.12 $buf =~ s/\r//g; # remove WINDOWS \r
205 dpavlin 1.1 close(ALL);
206     $/ = $sep;
207    
208     ## Remove comments from the raw presentation
209     ## they do not need to show up on the slides
210     $buf =~ s/<!--.*?-->//sgo;
211    
212 dpavlin 1.13 ## if $pack is set, output name of css (for inclusion in archive), but
213     ## reset $cssStandard only to filename (without path)
214    
215     if ($pack) {
216     push @pack_additional,$cssStandard;
217     $cssStandard =~ s/^.*\/([^\/]+)$/$1/g;
218     }
219    
220 dpavlin 1.1 ## the slidemaker tool assumes that each slide is self contained between 2 sets of h1 tags
221     ## if not it will generate a rather weird output
222     ## split using <h1...> and </h1...> as separator (ignores attributes!)
223     ## h1 or H1 can be used
224     @table = split(/<\/?[hH]1[^>]*>/, $buf);
225    
226     ## compute the total number of slides
227     $total = $#table / 2;
228     if ($#table % 2 != 0) {
229     $total = ($#table +1)/2;
230     }
231    
232     ##
233     ## raw presentation has been read successfully
234     ##############################################################################
235    
236     ##############################################################################
237     ## processing the slides
238    
239 dpavlin 1.13 print STDERR "\n--- Processing $total slides ---\n";
240 dpavlin 1.1
241     ## generate the header table of content of the presentation
242     ## which is also the first page of the talk
243     &openOverview($overview);
244    
245     ## start the slide count so we can number them
246     $slideCount = 1;
247    
248 dpavlin 1.5 ## pre-load template slides using $template dir
249     Text::FastTemplate->defaults(
250     path => [ $template ]
251     );
252    
253     Text::FastTemplate->preload( [
254     { file => 'slide.html', key => 'slide' },
255     { file => 'overview.html', key => 'overview' },
256 dpavlin 1.12 { file => 'title.html', key => 'title' },
257 dpavlin 1.5 ]);
258 dpavlin 1.1
259 dpavlin 1.7 ## unroll relative anchors (#something) into links with slides
260    
261     my %anchor_on_slide;
262    
263     ## step 1: record anchors
264     for($i=0; $i<$total; $i++) {
265 dpavlin 1.9 my $tmp = $table[($i*2)].$table[($i*2)+1];
266 dpavlin 1.7 while ($tmp =~ s,<a +name="*([^>"]+)"*>,,i) {
267     $anchor_on_slide{$1}=($i+1);
268 dpavlin 1.13 print STDERR "\tslide ",($i+1)," anchor: $1\n" if ($debug);
269 dpavlin 1.7 }
270     }
271    
272     ## step 2: fix links
273     for($i=0; $i<$total; $i++) {
274     foreach (keys %anchor_on_slide) {
275     $table[($i*2)] =~ s,href="*#$_"*>,href="slide$anchor_on_slide{$_}\.html#$_">,gi;
276     }
277     }
278    
279 dpavlin 1.1 ## @table is the array containing each slide with its title
280     ## for each slide to be generated
281     ## we delete each slide and its title when generated
282     ## so that the current slide and its title are always at $table[0] (for the title)
283     ## and $table[1] (for the slide content)
284 dpavlin 1.7
285     undef $prev_title;
286     undef $next_title;
287    
288 dpavlin 1.1 do {
289    
290     ## get rid of the first element contained by the raw presentation array
291     shift(@table);
292     ## then $table[0] is the title of the slide to be generated
293     $table[0] =~ s/\n+/ /g; ## replace return character by a white space
294     $table[0] =~ s/\r+/ /g; ## replace lf character by a white space
295     $table[0] =~ s/ +/ /g; ## concatenate several white spaces to only one
296     $table[0] =~ s/^ //; ## remove all the starting white spaces in the title
297     $table[0] =~ s/ $//; ## remove all trailing white spaces in the title
298     ## $slideTitle preserves link(s) in the title
299     $slideTitle = $table[0];
300     ## need to check if the title contains any anchor
301     ## if so it needs to be removed
302     ## because the title is being used in the table of content to link to the corresponding slide
303 dpavlin 1.8 $table[0] = remove_anchor($table[0]);
304 dpavlin 1.1
305     ## grab next slide title $table[2] (if there's a next slide)
306     ## to be able to use in the 'next' navigation button
307     ## keep in mind that $table[1] contains the slide corresponding to the title $table[0]
308 dpavlin 1.7 if ($table[2]) {
309 dpavlin 1.8 $next_title= remove_anchor($table[2]);
310 dpavlin 1.7 }
311 dpavlin 1.1
312     ## the current slide content is stored $table[1]
313     ## there is an attempt to make sure it's clean HTML
314     ## Pierre Fillault's note: use same piece of as used in http://www.w3.org/Web/Tools/CvsCommitScripting
315     ## to make use of the validation service
316     $slideContent = &clean_html($table[1]) ;
317    
318     ## extract slide Sub Title <h2>
319     undef $slideSubTitle;
320 dpavlin 1.8 if ($slideContent =~ s/<[hH]2[^>]*>(.+)<\/[hH]2[^>]*>//sm) {
321     $slideSubTitle=remove_anchor($1);
322 dpavlin 1.1 }
323    
324     ## add the title of the current slide to the table of content
325     &addTitle($slideTitle,$slideSubTitle,$slideCount);
326    
327     ## generate the current slide
328     ## parameters are:
329     ## title of the slide, its content, the slide number, the title of the previous slide and the title of the next slide
330 dpavlin 1.7 &createSlide($slideTitle,$slideSubTitle,$slideContent ,$slideCount++,$prev_title,$next_title);
331 dpavlin 1.1
332     ## save the title of the previous slide to be displayed in the 'previous' navigation button
333 dpavlin 1.8 $prev_title=remove_anchor($table[0]);
334 dpavlin 1.1 }
335     ## process the next slide
336     while (shift(@table));
337    
338     ## close the table of content
339     &closeOverview;
340    
341     ## generate more toc with the all the style sheets
342     ## as there's no way of loading a style sheet
343     ## except dynamically, but that would be slow
344     ## and would not work on all platforms (ie would fail on Joe's laptop)
345     &generateTOC;
346    
347 dpavlin 1.13 ## print additional files to pack
348     print STDOUT join("\n",@pack_additional) if ($pack);
349 dpavlin 1.1
350 dpavlin 1.13 print STDERR "--- Finished ---\n";
351 dpavlin 1.1 exit 0;
352     ##
353     ## end of the slidemaker main program
354     ##############################################################################
355    
356    
357     ##############################################################################
358     ## generate the header of the table of content
359    
360     sub openOverview
361     {
362     ## open the file to write to
363     open(FOO, ">$_[0].html") || die "can't open $_[0].html: $!";
364 dpavlin 1.13 push @pack_additional,"$_[0].html" if ($pack);
365 dpavlin 1.1
366     ## the style sheet used in the table of content is
367     $stylelink = "";
368     ## here is the standard style sheet
369     $stylelink .= "<link href=\"$cssStandard\" rel=\"stylesheet\" type=\"text/css\" title=\"Talk\" media=\"screen\">";
370    
371 dpavlin 1.5 %overview_data = (
372     doctype => $doctype,
373     title => $title,
374     http_equiv => $http_equiv,
375     stylelink => $stylelink,
376     body => $body,
377    
378     logoLink => $logoLink,
379     logoFile => $logoFile,
380     logoAlt => $logoAlt,
381 dpavlin 1.7 logoLink2 => $logoLink2,
382     logoFile2 => $logoFile2,
383     logoAlt2 => $logoAlt2,
384 dpavlin 1.5
385     talkTitle => $talkTitle,
386     talkSubTitle => $talkSubTitle,
387    
388     content_hight => $content_hight,
389    
390     author => $author,
391     authorUrl => $authorUrl,
392     author2 => $author2,
393     authorUrl2 => $authorUrl2,
394 dpavlin 1.1
395 dpavlin 1.5 date => $date,
396 dpavlin 1.1
397 dpavlin 1.16 toc_title => $loc_toc,
398     template => $template,
399 dpavlin 1.5 );
400 dpavlin 1.1
401     }
402     ##
403     ## the beginning of the table of content has been generated and saved
404     ##############################################################################
405    
406     ##############################################################################
407     ## generate the footer of the table of content
408    
409     sub closeOverview
410     {
411 dpavlin 1.5 $overview_data{slide_html} = make_progress_bar(0,$total);
412     $overview_data{toc_entries} = [ @toc_entries ];
413    
414     my $page= new Text::FastTemplate key => 'overview';
415     print FOO $page->output( \%overview_data );
416 dpavlin 1.1
417     close(FOO);
418     }
419     ##
420     ## the toc has been completed and saved
421     ##############################################################################
422    
423     ##############################################################################
424     ## add an item in the toc
425    
426     sub addTitle
427     {
428     my ($title,$subtitle,$nr) = @_;
429     $title =~ s/\r//ig; # remove the windows CR+LF
430     $title =~ s/<[^>]+>//g;
431    
432     if (! $title) {
433     return 1;
434     }
435    
436     # split TOC entries to multiple pages
437    
438     if ($nr % $toc_on_page == 0) {
439     my $toc_nr=int($nr/$toc_on_page);
440    
441 dpavlin 1.10 $item = {
442 dpavlin 1.5 pre_html => $pre_ul,
443     accesskey => " ", # space
444     href => "index-toc$toc_nr.html",
445     title => "...",
446     post_html => $post_ul,
447     more => 1, # use style for more pages link (...)
448 dpavlin 1.10 };
449     push @toc_entries, $item;
450 dpavlin 1.5
451 dpavlin 1.1 &closeOverview;
452 dpavlin 1.10 undef @toc_entries;
453 dpavlin 1.1 &openOverview("$overview-toc$toc_nr");
454     $last_toc_title='';
455     }
456    
457 dpavlin 1.5 $pre_ul=$post_ul='';
458 dpavlin 1.11 if ($last_toc_title eq $title && $subtitle) {
459 dpavlin 1.1 $title = $subtitle;
460 dpavlin 1.5 $pre_ul='<ul>';
461     $post_ul='</ul>';
462 dpavlin 1.1 } else {
463     $last_toc_title=$title;
464     }
465    
466     # add accesskey for first 9 slides (`1' - `9') or just for first
467     # TOC page, and tabindex for all slides
468     if ($nr < 10 && $nr < $toc_on_page) {
469 dpavlin 1.5 $item = {
470     pre_html => $pre_ul,
471     accesskey => "$nr",
472     tabindex => "$nr",
473     href => "slide$nr.html",
474     title => $title,
475     post_html => $post_ul,
476     more => 0,
477     };
478     push @toc_entries,$item;
479 dpavlin 1.1 } else {
480 dpavlin 1.10 $item = {
481 dpavlin 1.5 pre_html => $pre_ul,
482     tabindex => "$nr",
483     href => "slide$nr.html",
484     title => $title,
485     post_html => $post_ul,
486 dpavlin 1.10 };
487     push @toc_entries,$item;
488 dpavlin 1.1 }
489     }
490     ##
491     ##############################################################################
492    
493     ##############################################################################
494     ## generate the current slide
495    
496     sub createSlide
497     {
498    
499     # parameters are respectively the slide title, its content,
500     # its number, the next slide title and the previous slide title
501    
502 dpavlin 1.7 my ($title,$subtitle,$content,$nr,$prev_title,$next_title) = @_;
503 dpavlin 1.1
504     if (! $title) {
505     return 1;
506     }
507    
508     # work the slide title, the previous and next titles
509     chomp $title;
510     $title =~ s/\r//ig; # remove the windows CR+LF
511     $next_title =~ s/\r//ig;
512     $prev_title =~ s/\r//ig;
513    
514     # Remove any tags from the prev & next titles
515     $next_title =~ s/<[^>]+>//g;
516     $prev_title =~ s/<[^>]+>//g;
517     $title =~ s/<[^>]+>//g;
518    
519     # Replace double quotes
520     # $title =~ s/"/&#34;/g;
521     $next_title =~ s/"/&#34;/g;
522     $prev_title =~ s/"/&#34;/g;
523    
524     # work the slide content
525     $content =~ s/<\/body>//i; # remove if any
526     $content =~ s/<\/html>//i; # remove if any
527    
528     $status = sprintf "Slide %2d: %s %s\n", $nr, $title, $subtitle;
529     $status =~ s/<[^>]+>//g;
530 dpavlin 1.13 print STDERR $status;
531 dpavlin 1.1
532     &verify_html($content); # check the html
533    
534     ## write to the slide
535     open(SLIDE, ">slide$nr.html") || die "can't save slide$nr.html: $!";
536 dpavlin 1.13 push @pack_additional,"slide$nr.html" if ($pack);
537 dpavlin 1.1
538 dpavlin 1.7 my $toc_link = "$overview\.html";
539 dpavlin 1.1
540     ## initialization of the navigation links
541 dpavlin 1.7 my $next_link = "";
542     my $prev_link = "";
543 dpavlin 1.1
544     if ($nr>1) {
545 dpavlin 1.7 $prev_link = "slide".($nr-1).".html";
546 dpavlin 1.1 # } else {
547     # ## add a link back to the toc for the first slide --CMN 19991102
548 dpavlin 1.7 # $prev_link = "$overview\.html";
549 dpavlin 1.1 }
550    
551     if ($nr != $total) {
552 dpavlin 1.7 $next_link = "slide".($nr+1).".html";
553 dpavlin 1.1 }
554    
555     $stylelink = "";
556     # here is the standard style sheet
557     $stylelink .= "<link href=\"$cssStandard\" rel=\"stylesheet\" type=\"text/css\" title=\"Talk\">";
558    
559     my $slide_html=make_progress_bar($nr,$total);
560    
561 dpavlin 1.12 # undefine body if no content is found (so that template can show
562     # only title and sub-title
563     if ($content !~ m/\S/g) {
564     undef $content;
565     }
566    
567 dpavlin 1.5 %page_data = (
568     doctype => $doctype,
569     talkTitle => $talkTitle,
570     title => $title,
571 dpavlin 1.7 subtitle => $subtitle,
572 dpavlin 1.5 http_equiv => $http_equiv,
573     stylelink => $stylelink,
574     body => $body,
575    
576 dpavlin 1.7 logoLink => $logoLink,
577     logoFile => $logoFile,
578     logoAlt => $logoAlt,
579     logoLink2 => $logoLink2,
580     logoFile2 => $logoFile2,
581     logoAlt2 => $logoAlt2,
582    
583    
584 dpavlin 1.5 content_hight => $content_hight,
585     content => $content,
586 dpavlin 1.7
587     prev_link => $prev_link,
588     toc_link => $toc_link,
589     next_link => $next_link,
590     prev_title => $prev_title,
591 dpavlin 1.16 toc_title => $loc_toc,
592 dpavlin 1.7 next_title => $next_title,
593    
594 dpavlin 1.5 author => $author,
595 dpavlin 1.7 authorUrl => $authorUrl,
596     author2 => $author2,
597     authorUrl2 => $authorUrl2,
598    
599     date => $date,
600    
601 dpavlin 1.5 slide_html => $slide_html,
602    
603 dpavlin 1.16 template => $template,
604 dpavlin 1.5 );
605    
606 dpavlin 1.12 my $page;
607     if ($content) {
608     $page= new Text::FastTemplate key => 'slide';
609     } else {
610     $page= new Text::FastTemplate key => 'title';
611     }
612 dpavlin 1.5 print SLIDE $page->output( \%page_data );
613 dpavlin 1.13 extract_files($page->output( \%page_data )) if ($pack);
614 dpavlin 1.1 close(SLIDE);
615     return 0;
616     }
617    
618     ##############################################################################
619     ## generate all the toc of contents needed for each css choosen by the user
620     ## the default toc is not numbered so it can be served by a request to '/'
621     ## (ie it remains Overview.html whereas the other toc are called Overview_#.html)
622    
623     sub generateTOC {
624    
625     ## read the general toc
626     open(FOO, "<$overview.html");
627     @TOC = <FOO>;
628     close(FOO);
629     $toc = "@TOC";
630    
631     ## for each user CSS file
632     ## starting after the default css
633     for ($css=1;$css<$nbCssStandard;$css++) {
634    
635     ## create new TOC
636     $newTOC = $toc;
637    
638     ## the links on the toc need also to be modified
639     ## to link to the correct slides
640     $newTOC =~ s/<a accesskey=\"(\d)\" tabindex=\"(\d+)\" href=\"slide(\d+)-\d+\.html\">/<a accesskey=\"$1\" tabindex=\"$2\" href=\"slide$3-$css\.html">/ig;
641     $newTOC =~ s/<a tabindex=\"(\d+)\" href=\"slide(\d+)-\d+\.html\">/<a tabindex=\"$1\" href=\"slide$2-$css\.html">/ig;
642    
643     ## write to new TOC
644     $outfile = $overview."-".$css.".html";
645     open(OUT, ">$outfile");
646     print OUT $newTOC;
647     close(OUT)
648     }
649    
650    
651     }
652    
653     ##############################################################################
654     # check that the html of the slide
655     # is correct (ALT tags, ...)
656     # This procedure produces only warning
657     sub verify_html {
658    
659     if ($_[0] =~ /<img([^>]*)>/im) {
660     if (!($1 =~ /ALT=/im)) {
661 dpavlin 1.13 print STDERR "WARNING: <IMG> without ALT\n";
662     print STDERR " <IMG$1>\n" ;
663 dpavlin 1.1 }
664     }
665     }
666    
667     ##############################################################################
668     # clean the html of the slide
669     # remove all <div class="comment">blabla</div>
670     sub clean_html {
671 dpavlin 1.10 my $tmp=$_[0];
672     $tmp =~ s/<div\s+class\s*=\s*(?:comment[\s>]|\"comment\").*?<\/div>//igs;
673     $tmp =~ s,</*font[^>]+>,,ig;
674     return $tmp;
675 dpavlin 1.1 }
676    
677     ##############################################################################
678     # make transparent 1x1 gif (for layout tricks)
679     sub make_dotgif {
680     @dot_gif=(71,73,70,56,57,97,1,0,1,0,128,0,0,192,192,192,0,0,0,33,
681     249,4,1,0,0,0,0,44,0,0,0,0,1,0,1,0,0,2,2,68,1,0,59);
682     open(GIF,"> $_[0]") || die "can't write gif $_[0]: $!";
683     my $dotgif;
684     foreach (@dot_gif) {
685     $dotgif.=chr($_);
686     }
687     print GIF $dotgif;
688     close(GIF);
689     }
690    
691     ##############################################################################
692     # make slide progress bar
693     sub make_progress_bar {
694     my ($nr,$total) = @_;
695    
696     my $pcnt_done=int($nr*100/$total);
697     my $pcnt_left=100-$pcnt_done;
698    
699 dpavlin 1.16 if ($progress_bar && uc($progress_bar) ne "NO") {
700 dpavlin 1.1 my $l=$r="&nbsp;";
701     my $t="$nr of $total";
702     if ($pcnt_done > 50) {
703     $l=$t;
704     } else {
705     $r=$t;
706     }
707 dpavlin 1.15 $html='<table border="0" width="50%" cellpadding="0" cellspacing="0" align="right"><tr>';
708     if ($pcnt_done != 0) {
709     $html.='<td width="'.$pcnt_done.'%" class="pcnt-done">'.$l.'</td>';
710     }
711     if ($pcnt_left != 0) {
712     $html.='<td width="'.$pcnt_left.'%" class="pcnt-left">'.$r.'</td>';
713     }
714     $html.='</tr></table>';
715 dpavlin 1.1 } else {
716     $html="$loc_slide $nr $loc_of $total";
717     }
718    
719     return $html;
720     }
721    
722 dpavlin 1.8 ##############################################################################
723 dpavlin 1.13 # remove anchors <a href...> from html (for titles)
724 dpavlin 1.8 sub remove_anchor {
725 dpavlin 1.10 my $tmp = $_[0];
726     $tmp =~ s/(.*)<A[^>]*>(.*)<\/A>(.*)/$1$2$3/ig;
727     return $tmp;
728 dpavlin 1.13 }
729    
730     ##############################################################################
731     # extract files referenced in presentation
732    
733     sub extract_files {
734     my $tmp = $_[0];
735     while ($tmp =~ s/<a\s+href="*([^"\s]+)"*//ism ||
736     $tmp =~ s/<img\s+src="*([^"\s]+)"*//ism) {
737     if ("$1" !~ m/[hf]t?tp:/ && -f "$1" && !grep(/$1/,@pack_additional)) {
738     push @pack_additional,$1;
739     }
740     }
741 dpavlin 1.8 }

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