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
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
|
#!/usr/local/bin/perl -w
#
# W3C HTML Validation Service
# A CGI script to retrieve and validate an HTML file
#
# Copyright 1995-1999 Gerald Oskoboiny <gerald@w3.org>
#
# This source code is available under the license at:
# http://www.w3.org/Consortium/Legal/copyright-software
#
# $Id: check,v 1.44 1999-10-25 12:21:23 gerald Exp $
#
# Load modules
use strict;
use LWP::UserAgent;
use URI::Escape;
use CGI::Carp;
use CGI qw(:cgi -newstyle_urls -private_tempfiles);
use Text::Wrap;
#
# Define global constants
use constant TRUE => 1;
use constant FALSE => 0;
use constant UNDEF => undef;
#############################################################################
# Constant definitions
#############################################################################
my $cvsrevision = '$Revision: 1.44 $';
my $cvsdate = '$Date: 1999-10-25 12:21:23 $';
my $logfile = "/var/log/httpd/val-svc";
my $uri_def_uri = "http://www.w3.org/Addressing/#terms";
my $faqloc = "http://www.cs.duke.edu/~dsb/kgv-faq/";
my $faqerrloc = "${faqloc}errors.html";
my $abs_svc_uri = "http://validator.w3.org/";
my $rel_img_uri = "/images/";
my $abs_img_uri = "${abs_svc_uri}images/";
my $maintainer = 'gerald@w3.org';
my $sgmlstuff = "/usr/local/src/validator/htdocs/sgml-lib";
my $sp = "/usr/local/bin/nsgmls";
my $nkf = "/usr/local/bin/nkf";
my $sgmldecl = "$sgmlstuff/REC-html40-19980424/HTML4.decl";
my $xhtmldecl = "$sgmlstuff/PR-xhtml1-19990824/xhtml1.dcl";
my $xmldecl = "$sgmlstuff/sp-1.3/pubtext/xml.dcl";
my $revision = $cvsrevision;
$revision =~ s/^\$Revision: //;
$revision =~ s/ \$$//;
my ( $validity, $version, $document_type, %undef_frag,
$effective_charset, $charsets_differ,
$lastmod, $catalog, $command, @fake_errors,
$guessed_doctype, $doctype, $line, $col, $type, $msg, $diff,
$pos, $indent, $gifname, $alttext, $gifhw, $nicegifname, $pedanticflags,
$pedantic_blurb, $level, $prevlevel, $i, $prevdata );
my $notice = '';
# "<p><strong>Note: This service will be ...</strong>";
umask( 022 );
my $weblint = "/usr/bin/weblint";
my $html32_doctype = qq{<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">};
my $html40t_doctype = qq{<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">};
my $html40f_doctype = qq{<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN" "http://www.w3.org/TR/REC-html40/frameset.dtd">};
my $xhtmlt_doctype = qq{<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"};
my $temp = "/tmp/validate.$$";
my $lt = "\020";
my $gt = "\021";
my $gifborder = " border=0";
my @options = qw(weblint pw outline ss sp noatt);
#############################################################################
# Array of FPIs -> plain text version strings
#############################################################################
my %pub_ids = (
'-//IETF//DTD HTML Level 0//EN//2.0', 'HTML 0.0',
'-//IETF//DTD HTML Strict Level 0//EN//2.0', 'Strict HTML 0.0',
'-//IETF//DTD HTML 2.0 Level 1//EN', 'HTML 1.0',
'-//IETF//DTD HTML 2.0 Strict Level 1//EN', 'Strict HTML 1.0',
'-//IETF//DTD HTML 2.0 Strict//EN', 'Strict HTML 2.0',
'-//IETF//DTD HTML 2.0//EN', 'HTML 2.0',
'-//IETF//DTD HTML 2.1E//EN', 'HTML 2.1E',
'-//AS//DTD HTML 3.0 asWedit + extensions//EN', 'HTML 3.0 (AdvaSoft version)',
'-//IETF//DTD HTML 3.0//EN', 'HTML 3.0 (Beta)',
'-//W3O//DTD W3 HTML Strict 3.0//EN//', 'Strict HTML 3.0 (Beta)',
'-//Sun Microsystems Corp.//DTD HotJava HTML//EN', 'Hotjava-HTML',
'-//Sun Microsystems Corp.//DTD HotJava Strict HTML//EN', 'Strict Hotjava-HTML',
'-//WebTechs//DTD Mozilla HTML 2.0//EN', 'Netscape-HTML',
'-//Netscape Comm. Corp. Strict//DTD HTML//EN', 'Strict Netscape-HTML',
'-//Microsoft//DTD Internet Explorer 2.0 HTML//EN', 'MSIE-HTML',
'-//Microsoft//DTD Internet Explorer 2.0 HTML Strict//EN', 'Strict MSIE-HTML',
'-//Microsoft//DTD Internet Explorer 3.0 HTML//EN', 'MSIE 3.0 HTML',
'-//Microsoft//DTD Internet Explorer 3.0 HTML Strict//EN', 'Strict MSIE 3.0 HTML',
'-//OReilly and Associates//DTD HTML Extended 1.0//EN', 'O\'Reilly HTML Extended v1.0',
'-//OReilly and Associates//DTD HTML Extended Relaxed 1.0//EN', 'O\'Reilly HTML Extended Relaxed v1.0',
'-//IETF//DTD HTML V2.2//EN', 'HTML 2.2',
'-//W3C//DTD HTML 1996-01//EN', 'HTML 1996-01',
'-//W3C//DTD HTML 3.2 Final//EN', '<a href="http://www.w3.org/TR/REC-html32">HTML 3.2</a>',
'-//W3C//DTD HTML Experimental 970421//EN', '<a href="http://www.w3.org/TR/NOTE-html-970421.html">HTML 3.2 + Style</a>',
'+//Silmaril//DTD HTML Pro v0r11 19970101//EN', '<a href="http://www.ucc.ie/doc/www/html/dtds/htmlpro.html">HTML Pro</a>',
'-//Spyglass//DTD HTML 2.0 Extended//EN', 'Spyglass HTML 2.0 Extended',
'http://www.w3.org/MarkUp/Cougar/Cougar.dtd', '<a href="http://www.w3.org/MarkUp/Cougar/">HTML Level "Cougar"</a>',
'-//W3C//DTD HTML 4.0//EN', '<a href="http://www.w3.org/TR/REC-html40/">HTML 4.0</a> Strict',
'-//W3C//DTD HTML 4.0 Transitional//EN', '<a href="http://www.w3.org/TR/REC-html40/">HTML 4.0</a> Transitional',
'-//W3C//DTD HTML 4.0 Frameset//EN', '<a href="http://www.w3.org/TR/PR-html40/">HTML 4.0</a> Frameset',
'-//W3C//DTD HTML 4.01//EN', '<a href="http://www.w3.org/TR/1999/PR-html40-19990824/">HTML 4.01</a> Strict',
'-//W3C//DTD HTML 4.01 Transitional//EN', '<a href="http://www.w3.org/TR/1999/PR-html40-19990824/">HTML 4.01</a> Transitional',
'-//W3C//DTD HTML 4.01 Frameset//EN', '<a href="http://www.w3.org/TR/1999/PR-html40-19990824/">HTML 4.01</a> Frameset',
'-//W3C//DTD XHTML 1.0 Strict//EN', '<a href="http://www.w3.org/TR/1999/PR-xhtml1-19990824/">XHTML 1.0</a> Strict',
'-//W3C//DTD XHTML 1.0 Transitional//EN', '<a href="http://www.w3.org/TR/1999/PR-xhtml1-19990824/">XHTML 1.0</a> Transitional',
'-//W3C//DTD XHTML 1.0 Frameset//EN', '<a href="http://www.w3.org/TR/1999/PR-xhtml1-19990824/">XHTML 1.0</a> Frameset',
'XML', '<a href="http://www.w3.org/TR/REC-xml">XML</a>'
);
#############################################################################
# Array of errors -> fragment identifiers for error explanation links
#############################################################################
my %frag = (
'entity end not allowed in comment', 'unterm-comment-1',
'name start character invalid only s and comment allowed in comment declaration', 'unterm-comment-2',
'name character invalid only s and comment allowed in comment declaration', 'unterm-comment-2',
'unknown declaration type FOO', 'bad-comment',
'character FOO not allowed in attribute specification list', 'attr-char',
'an attribute value must be a literal unless it contains only name characters', 'attr-quoted',
'syntax of attribute value does not conform to declared value', 'bad-attr-char',
'length of attribute value must not exceed LITLEN less NORMSEP', 'name-length',
'element FOO undefined', 'undef-tag',
'element FOO not allowed here', 'not-allowed',
'there is no attribute FOO', 'undef-attr',
'FOO is not a member of the group specified in the declared value of this attribute', 'undef-attr-val',
'FOO is not a member of a group specified for any attribute', 'bad-abbrev-attr',
'end tag for FOO omitted but its declaration does not permit this', 'no-end-tag',
'end tag for element FOO which is not open', 'floating-close',
'end tag for FOO which is not finished', 'omitted-content',
'start tag for FOO omitted but its declaration does not permit this', 'no-start-tag',
'general entity FOO not defined and no default entity', 'bad-entity',
'non SGML character number', 'bad-char',
'cannot generate system identifier for entity FOO', 'bad-pub-id'
# 'error', 'frag',
# 'character data is not allowed here', 'frag',
);
#############################################################################
# Set up some signal handlers in case we get killed before exiting naturally
#############################################################################
$SIG{'TERM'} = 'erase_stuff';
$SIG{'KILL'} = 'erase_stuff';
$SIG{'PIPE'} = 'IGNORE';
# $SIG{'CHLD'} = 'erase_stuff';
#############################################################################
# Process CGI variables
#############################################################################
#
# Create a new CGI object.
my $q = new CGI;
#
# Backwards compatibility; see
# http://lists.w3.org/Archives/Public/www-validator/1999JulSep/0197
# http://lists.w3.org/Archives/Public/www-validator/1999JulSep/0212
if (scalar $q->param) {
foreach my $param ($q->param) {
$q->param($param, TRUE) unless $q->param($param);
}
}
#
# Futz the URI so "/referer" works.
if ($q->path_info eq '/referer') {
$q->param('uri', $q->referer);
}
#
# Use "url" unless a "uri" was also given.
if ($q->param('url') and not $q->param('uri')) {
$q->param('uri', $q->param('url'));
}
#
# Send them to the homepage unless we can extract a URI from either of the
# acceptable sources: uri, url or /referer.
&redirect_to_home_page unless length($q->param('uri')) > 5;
#
# Munge the URI to include commonly omitted prefixes/suffixes.
$q->param('uri', $q->param('uri') . '/') unless $q->param('uri') =~ m(/);
$q->param('uri', 'http://' . $q->param('uri')) if $q->param('uri') =~ m(^www)i;
#############################################################################
# Output validation results
#############################################################################
my $header = <<"EOF";
Content-Type: text/html
$html40t_doctype
<html>
<head>
<title>W3C HTML Validation Service Results</title>
<link rev="made" href="mailto:$maintainer">
<link rel="stylesheet" href="/results.css" media="screen">
</head>
<body bgcolor="#FFFFFF" text="#000000" link="#0000ee" vlink="#551a8b">
<p>
<a href="http://www.w3.org/"><img
src="http://www.w3.org/Icons/WWW/w3c_home" height=48 border=0
alt="W3C"></a>
</p>
<h1><a href="/">W3C HTML Validation Service</a> Results</h1>
$notice
EOF
unless($q->param('uri') =~ m(^http://)) {
print $header;
print <<"EOF";
<p>
Sorry, this type of URI is not supported by this service.
</p>
<p>
URIs should be in the form:
</p>
<blockquote>
<code>$abs_svc_uri</code>
</blockquote>
<p>
(There are other types of URIs, too, but only <code>http://</code> URIs
are currently supported by this service.)
</p>
EOF
&clean_up_and_exit;
}
my $ua = new LWP::UserAgent;
$ua->agent( "W3C_Validator/$revision " . $ua->agent );
$ua->parse_head(0); # we want to parse the http-equiv stuff ourselves, for now
my $request = new HTTP::Request(GET => $q->param('uri'));
# if we got a Authorization header from the client, it means
# that the client is back at it after being prompted for
# a password: let's insert the header as is in the outgoing request
if($ENV{HTTP_AUTHORIZATION}){
$request->headers->header(Authorization => $ENV{HTTP_AUTHORIZATION});
}
my $response = $ua->request($request);
if ( $response->code != 200 ) {
if ( $response->code == 401 ) {
$response->headers->www_authenticate =~ /Basic realm=\"([^\"]+)\"/;
my $realm = $1;
my $resource = $response->request->url;
my $authHeader = $response->headers->www_authenticate;
&print_401_auth_required_message( $resource, $realm, $authHeader );
}
else {
print $header;
&print_unknown_http_error_message( $q->param('uri'), $response->code,
$response->message );
}
&clean_up_and_exit;
}
my $content_type = $response->headers->header("Content-Type");
if ( ( $content_type =~ /text\/xml/i ) ||
( $content_type =~ /image\/svg/i ) ||
( $content_type =~ /application\/smil/i ) ||
( $content_type =~ /application\/xml/i ) ) {
$document_type = "xml";
}
elsif ($content_type =~ /text\/html/i) {
$document_type = "html";
}
else {
print $header;
print <<"EOF";
<p>
Sorry, I am unable to validate this document because its returned
content-type was <code>$content_type</code>, which is not
currently supported by this service.
</p>
EOF
&clean_up_and_exit;
}
my $jump_links = &build_jump_links;
my $count = 1; # @@ should loop over many uris instead
print $header;
print <<"EOF";
<h2><a name="doc$count">Document Checked</a></h2>
$jump_links
EOF
my @file = split '\n',$response->content;
if ( ( $document_type eq "html" ) || ( $document_type eq "xhtml" ) ) {
( $guessed_doctype, $doctype ) = &check_for_doctype( \@file );
}
if ( $doctype =~ /xhtml/i ) {
$document_type = "xhtml";
}
my $meta_charset = '';
foreach $line (@file) {
# @@ needs to handle meta elements that span more than one line
if ( $line =~ /<meta/i ) {
if ( $line =~ /charset\s*=[\s"]*([^\s;">]*)/i ) {
$meta_charset = $1;
last;
}
}
}
my $http_charset = '';
if ( $content_type =~ /;\s*charset=(.*)/i ) {
$http_charset = $1;
$http_charset =~ s/;.*//;
$http_charset =~ s/\s*//g;
}
$content_type =~ s/;.*$//;
$content_type =~ s/\s*$//g;
if ( $http_charset ne '' ) {
$effective_charset = $http_charset;
if ( $meta_charset ne '' && $http_charset !~ /$meta_charset/i ) {
# @@ the above needs work
$charsets_differ = 1;
}
}
else {
if ( $meta_charset ne '' ) {
$effective_charset = $meta_charset;
}
else {
$effective_charset = "unknown";
}
}
my $codeconv = '';
if ( $effective_charset =~ /iso-2022-jp/i ) {
$codeconv = "$nkf -Jex | ";
}
elsif ( $effective_charset =~ /utf-8/i ) {
$ENV{SP_CHARSET_FIXED}="YES";
$ENV{SP_ENCODING}="utf-8";
}
elsif ( $effective_charset =~ /Shift_JIS/i ) {
$codeconv = "$nkf -Sex | ";
}
else {
$codeconv = "";
}
print qq(<ul>\n <li><a href="$uri_def_uri">URI</a>: ),
'<a href="', $q->param('uri'), '">', $q->param('uri'), qq(</a>\n);
if ( $lastmod = $response->headers->header("Last-Modified") ) {
print qq{ <li>Last modified: $lastmod\n};
}
if ( defined $response->headers->server ) {
print " <li>Server: " . $response->headers->server . "\n";
}
if ( defined $response->content_length ) {
print " <li>Content length: " . $response->content_length . "\n";
}
my $xmlflags = '';
my $decl = '';
if ( $document_type eq "xhtml" ) {
$ENV{SP_CATALOG_FILES} = "$sgmlstuff/PR-xhtml1-19990824/xhtml.soc";
$ENV{SGML_SEARCH_PATH} = "$sgmlstuff/PR-xhtml1-19990824/";
$ENV{SP_CHARSET_FIXED}="YES";
$ENV{SP_ENCODING}="XML";
$xmlflags = "-wxml ";
$decl = $xhtmldecl;
}
elsif ( $document_type eq "xml" ) {
$ENV{SP_CATALOG_FILES} = "$sgmlstuff/sp-1.3/pubtext/xml.soc";
$ENV{SGML_SEARCH_PATH} = "$sgmlstuff/sp-1.3/pubtext/";
$ENV{SP_CHARSET_FIXED}="YES";
$ENV{SP_ENCODING}="XML";
$xmlflags = "-wxml -wno-valid ";
$decl = $xmldecl;
}
else { # must be HTML (for now)
$decl = $sgmldecl;
$catalog = "-c $sgmlstuff/catalog";
}
$command = "$codeconv $sp -E0 $xmlflags $catalog $decl";
# print " <li>nsgmls command line: <code>$command</code>\n";
open CHECKER, "|$command - >$temp.esis 2>$temp"
or die "open(|$command - >$temp.esis 2>$temp) returned: $!\n";
print CHECKER "$doctype\n" if $guessed_doctype;
# this is a kludge for DOS users with their entire file on a single line
# like http://validator.w3.org/dev/tests/no-newlines.html
if ( $#file == 0 ) {
@file = (split(/
/,$file[0]));
for (0..$#file) {
$file[$_] .= "\n";
}
}
# kludge for other DOS users with CRLFs
for (@file) {
s/
+$//;
print CHECKER $_, "\n";
}
close CHECKER or warn "close(CHECKER) returned: $!\n";
open ERRORS, "<$temp" or die "open($temp) returned: $!\n";
my @errors = <ERRORS>;
close ERRORS or warn "close(ERRORS) returned: $!\n";
my @esis;
open ESIS, "$temp.esis" or die "open($temp.esis) returned: $!\n";
while (<ESIS>) {
next if / IMPLIED$/;
next if /^ASDAFORM CDATA /;
next if /^ASDAPREF CDATA /;
chomp; # Removes trailing newlines
push @esis, $_;
}
close ESIS or warn "close(ESIS) returned: $!";
my $fpi;
$version = "unknown";
if ( $document_type eq "xhtml" ) {
$fpi = $doctype;
}
elsif ( $document_type eq "xml" ) {
$fpi = "XML";
}
else {
for (@esis) {
next unless /^AVERSION CDATA (.*)/;
$fpi = $1;
last;
}
if ( ! defined $fpi && length( $doctype) ) {
# this is needed for HTML 4 strict, which doesn't have a
# version attribute on the HTML element
$fpi = $doctype;
}
}
$version = $pub_ids{$fpi} || "unknown";
if ( $guessed_doctype ) {
push( @fake_errors, "$sp:<OSFD>0:2:1:E: Missing DOCTYPE declaration at start of document (<a href=\"http://www.htmlhelp.org/tools/validator/doctype.html\">explanation...</a>)\n" );
}
print qq{ <li>Character encoding: $effective_charset\n};
if ( $charsets_differ ) {
print <<"EOHD";
<br>
<strong>Warning:</strong> the character encoding specified in the HTTP header
(<code>$http_charset</code>) is different from the one specified in the META
element (<code>$meta_charset</code>).
I will use <code>$effective_charset</code> for this validation.
EOHD
}
print " <li>Document type: <b>$version</b>.\n";
print "</ul>\n\n";
if ( $document_type eq "xml" ) {
print <<"EOHD";
<p>
<strong>Note: experimental XML support was added to this service
on Aug 31, 1999, but it is not quite working yet; stay tuned to <a
href="http://lists.w3.org/Archives/Public/www-validator/">the
<code>www-validator</code> mailing list</a> for updates, and
please do not trust this service\'s output for XML documents
in the meantime.</strong>
</p>
EOHD
}
print <<"EOHD";
<p>
Below are the results of attempting to parse this document with
an SGML parser.
</p>
EOHD
if ( $? || $guessed_doctype ) {
print "<ul>\n";
for ((@fake_errors,@errors)) {
next if /^<OSFD>0:[0-9]+:[0-9]+:[^A-Z]/;
next if / numbers exceeding 65535 not supported$/;
next if /:W: SGML declaration was not implied$/ &&
( $document_type =~ /^x(ht)?ml$/ );
s/^$sp:<OSFD>//g;
if ( ! (($line, $col, $type, $msg)=(/^[^:]*:([0-9]+):([0-9]+):([A-Z]?):? (.*)/))) {
print "Uh oh! I got the following unknown error:\n\n $_\n\n";
print "Please make sure you specified the DOCTYPE properly!\n\n";
&output_doctype_spiel;
last;
}
if ( $msg =~ /^cannot generate system identifier for entity / ) {
print "<p><b>Fatal error</b>! $msg\n\n";
print "<p>I couldn't parse this document, because it " .
"uses a public\n identifier that's not in my <a\n " .
" href=\"sgml-lib/catalog\">catalog</a>!\n </p>\n";
&output_doctype_spiel;
last;
}
if ( $msg =~ /^cannot open / ) {
print "<p>Fatal error! $msg\n\n";
print "<p>I couldn't parse this document, because it " .
"makes reference to\n a system-specific file instead of " .
"simply using a public identifier\n to specify the " .
"level of HTML being used.\n </p>\n";
&output_doctype_spiel;
last;
}
$line-- if $guessed_doctype;
my $newline = $file[$line-1];
# make sure there are no ^P's or ^Q's in the file, since we need to use
# them to represent '<' and '>' temporarily. We'll just change them to
# literal P's and Q's for a lack of anything better to do with them.
$newline =~ s/${lt}/P/go; $newline =~ s/${gt}/Q/g;
my $orig_col = $col;
if ( length( $newline ) > 70 ) {
if ( $col < 25 ) {
# truncate source line at 70 chars (truncate right side only)
$newline = substr( $newline, 0, 70 ) . " ...";
}
elsif ( $col > 70 ) {
# keep rightmost 70 chars; adjust $col accordingly
# (truncate left side only)
$diff = $col - 50;
$newline = "... " . substr( $newline, $diff, 70 );
if ( length( $newline ) == (70 + 4) ) {
$newline .= " ...";
}
if ( $col > $diff ) {
$col -= $diff;
}
else {
$col -= 70;
}
}
else {
# truncate source line on both sides; leave more source text
# on left, and about 30 chars on right side. Also, adjust $col.
if ( $col < 35 ) {
$newline = "... " . substr( $newline, 0, 60 );
}
else {
$newline = "... " . substr( $newline, $col - 35, 60 );
$col = 35;
}
if ( length( $newline ) == ( 60 + 4 ) ) {
$newline .= " ...";
}
}
}
# figure out the index into the %frag associative array for the
# "explanation..." links to the KGV FAQ.
my $msgindex = $msg;
$msgindex =~ s/"[^"]+"/FOO/g;
$msgindex =~ s/[^A-Za-z ]//;
$newline =~ s/&/&/go; $newline =~ s/</</go;
$newline =~ s/${lt}/</g; $newline =~ s/${gt}/>/g;
print " <li>";
print qq{<a href="#line-$line">} if $q->param('ss');
print "Line $line";
print "</a>" if $q->param('ss');
print ", column $orig_col:\n";
print "<pre> <code class=input>$newline</code>\n";
print " " x ($col+2); # 2 is the number of spaces before <code> above
print " " x 4 if $col != $orig_col; # only for truncated lines
print "<span class=markup>^</span></pre>\n";
print "<p>\n";
print qq{<span class=error>Error: $msg</span>};
if ( defined $frag{$msgindex} ) {
print qq{ (<a
href="$faqerrloc#$frag{$msgindex}">explanation...</a>)};
}
else { # remember msgindexes without frags, to get the KGV FAQ updated.
$undef_frag{$msgindex} = 1;
}
print "</p>\n";
}
print "</ul>\n";
print "<hr>\n";
if ( $version eq "unknown" ) {
print "\n <p>\n Sorry, I can't validate this document.\n </p>\n";
}
else {
print "\n <p>\n Sorry, this document does not validate as $version.\n </p>\n\n";
&output_css_validator_blurb( $q->param('uri') );
}
$validity="invalid";
}
else {
print "\n <pre>\n No errors found!</pre>\n\n";
if ( $version ne "unknown" ) {
if ( $version =~ /^HTML 2\.0$/ ) {
$gifname = "vh20";
$alttext = "Valid HTML 2.0!";
$gifborder = "";
}
elsif ( $version =~ /HTML 3\.2</ ) {
$gifname = "vh32";
$alttext = "Valid HTML 3.2!";
$gifhw = " height=31 width=88";
}
elsif ( $version =~ /HTML 4\.0<\/a> Strict$/ ) {
$gifname = "vh40";
$alttext = "Valid HTML 4.0!";
$gifborder = "";
$gifhw = " height=31 width=88";
}
elsif ( $version =~ /HTML 4\.0<\/a> / ) {
$gifname = "vh40";
$alttext = "Valid HTML 4.0!";
$gifhw = " height=31 width=88";
}
elsif ( $version =~ /HTML 4\.01<\/a> Strict$/ ) {
$gifname = "vh40";
$alttext = "Valid HTML 4.01!";
$gifborder = "";
$gifhw = " height=31 width=88";
}
elsif ( $version =~ /HTML 4\.01<\/a> / ) {
$gifname = "vh40";
$alttext = "Valid HTML 4.01!";
$gifhw = " height=31 width=88";
}
elsif ( $version =~ /HTML 3\.0/ ) {
$gifname = "vh30";
$alttext = "Valid HTML 3.0!";
}
elsif ( $version =~ /Netscape/ ) {
$gifname = "vhns";
$alttext = "Valid Netscape-HTML!";
}
elsif ( $version =~ /Hotjava/ ) {
$gifname = "vhhj";
$alttext = "Valid Hotjava-HTML!";
}
if ( defined $gifname ) {
$nicegifname = $gifname;
$nicegifname =~ s/</\</g; $nicegifname =~ s/&/\&/g;
print <<"EOHD";
<p>
<img src="$rel_img_uri$gifname" alt="$alttext"> Congratulations, this
document validates as $version!
</p>
<p>
To show your readers that you have taken the care to create an
interoperable Web page, you may display this icon on any page
that validates. Here is the HTML you could use to add this icon
to your Web page:
</p>
<pre>
<p>
<a href="${abs_svc_uri}check/referer"><img$gifborder
src="$abs_img_uri$nicegifname"
alt="$alttext"$gifhw></a>
</p></pre>
<p>
If you like, you can <a href="$rel_img_uri$gifname">download a copy of this
image</a> to keep in your local web directory, and change the HTML fragment
above to reference your local image rather than the one on this server.
</p>
EOHD
}
}
if ( ( $version eq "unknown" ) || ( ! defined $gifname ) ) {
print " <p>\n Congratulations, this document validates as the document type specified! (I don't have an icon for this one yet, sorry.)\n </p>\n";
}
my $thispage = $q->self_url;
&output_css_validator_blurb( $q->param('uri') );
print <<"EOHD";
<p>
If you would like to create a link to <em>this</em> page (i.e., this
validation result) to make it easier to re-validate this page in the
future or to allow others to validate your page, the URI is:
</p>
<blockquote>
<code>$thispage</code>
</blockquote>
<p>
(Or, you can just add the current page to your bookmarks or hotlist.)
</p>
EOHD
$validity="valid";
}
if ( $q->param('weblint') ) {
if ( $q->param('pw') ) {
$pedanticflags = '-pedantic -e mailto-link';
$pedantic_blurb = ' (in "pedantic" mode)';
}
else {
$pedanticflags = '';
}
print <<"EOF";
<hr>
<h2><a name="weblint">Weblint Results</a></h2>
<p>
Below are the results of running <a
href="http://www.weblint.org/">Weblint</a>
on this document$pedantic_blurb:
</p>
EOF
open( WEBLINT,
"| $weblint -s $pedanticflags - 2>&1 >$temp.weblint" )
|| die "couldn't open weblint: $!";
for (@file) {
print WEBLINT $_, "\n";
}
close( WEBLINT ) or warn "couldn't close weblint: $!";
print "\n\n";
if ( $? ) {
print " <ul>\n";
open( WEBLINTOUT, "$temp.weblint" )
|| die "couldn't open weblint results in $temp: $!";
while (<WEBLINTOUT>) {
s/ \(use "-x <extension>" to allow this\)\.$/./go;
s/&/&/go;
s/</</go;
s/>/>/go;
print " <li>$_";
}
close( WEBLINTOUT ) || die "couldn't close weblint results: $!";
print " </ul>\n";
}
else {
print "\n <blockquote>\n Looks good to me!\n </blockquote>\n";
}
print "\n\n";
}
if ($q->param('outline')) {
print <<'EOF';
<div id="outline" class="mtb">
<hr>
<h2><a name="outline">Outline</a></h2>
<p>
Below is an outline for this document, automatically generated from the
heading tags (<code><H1></code> through <code><H6></code>.)
</p>
EOF
my $prevlevel = 0;
my $indent = 0;
my $level = 0;
for (1 .. $#esis) {
my $line = $esis[$_];
next unless $line =~ /^\(H([1-6])$/i;
$prevlevel = $level;
$level = $1;
print " </ul>\n" x ($prevlevel - $level); # perl is so cool.
if ($level - $prevlevel == 1) {
print " <ul>\n";
}
foreach my $i (($prevlevel + 1) .. ($level - 1)) {
print qq( <ul>\n <li class="warning">A level $i heading is missing!\n);
}
if ($level - $prevlevel > 1) {
print " <ul>\n";
}
$line = '';
my $heading = '';
until (substr($line, 0, 3) =~ /^\)H$level/i) {
$line = $esis[$_++];
$line =~ s/\\011/ /g;
if ($line =~ /^-/) {
my $headcont = $line;
substr($headcont, 0, 1) = " ";
$headcont =~ s/\\n/ /g;
$heading .= $headcont;
} elsif ($line =~ /^AALT CDATA( .+)/) {
my $headcont = $1;
$headcont =~ s/\\n/ /g;
$heading .= $headcont;
}
}
$heading = substr($heading, 1); # chop the leading '-' or ' '.
$heading =~ s/&/&/go; $heading =~ s/</</go;
print " <li>$heading\n";
}
print " </ul>\n" x $level;
print <<'EOF';
<p>
If this does not look like a real outline, it is likely that the
heading tags are not being used properly. (Headings should reflect
the logical structure of the document; they should not be used simply
to add emphasis, or to change the font size.)
</p>
</div>
EOF
}
if ( $q->param('ss') ) {
print <<'EOF';
<hr>
<h2><a name="source">Source Listing</a></h2>
<p>
Below is the source input I used for this validation:
</p>
EOF
print "<pre>\n";
if ( $guessed_doctype ) {
my $gd = "$doctype\n";
$gd =~ s/&/&/go; $gd =~ s/</</go;
printf "%4d: %s", 0, $gd;
}
$line = 1;
for (@file) {
s/&/&/go; s/</</go;
printf "<a name=\"line-%s\">%4d</a>: %s\n", $line, $line, $_;
$line++;
}
print "</pre>\n";
}
if ($q->param('sp')) {
print <<'EOF';
<div id="parse" class="mtb">
<hr>
<h2><a name="parse">Parse Tree</a></h2>
EOF
if ($q->param('noatt')) {
print <<'EOF';
<p class="note">
I am excluding the attributes, as you requested.
</p>
EOF
} else {
print <<'EOF';
<p class="note">
You can also view this parse tree without attributes by selecting the
appropriate option on <a href="./#byURI">the form</a>.
</p>
EOF
}
my $indent = 0;
my $prevdata = '';
print "<pre>\n";
foreach my $line (@esis) {
if ($q->param('noatt')) { # don't show attributes
next if $line =~ /^A/;
next if $line =~ /^\(A$/;
next if $line =~ /^\)A$/;
}
$line =~ s/\\n/ /g;
$line =~ s/\\011/ /g;
$line =~ s/\s+/ /g;
next if $line =~ /^-\s*$/;
if ($line =~ /^-/) {
substr($line, 0, 1) = ' ';
$prevdata .= $line;
next;
} elsif ($prevdata) {
$prevdata =~ s/&/&/go;
$prevdata =~ s/</</go;
$prevdata =~ s/\s+/ /go;
print wrap(' ' x $indent, ' ' x $indent, $prevdata), "\n";
undef $prevdata;
}
$line =~ s/&/&/go;
$line =~ s/</</go;
if ($line =~ /^\)/) {
$indent -= 2;
}
my $printme;
chomp($printme = $line);
$printme =~ s{^([()])(.*)} # reformat and add links on HTML elements
{ my $close = '';
$close = "/" if $1 eq ")"; # ")" -> close-tag
"<" . $close . "<a href=\"" .
&html_element_ref($2) .
"\">$2<\/a>>"
}egx;
$printme =~ s,^A, A,; # indent attributes a bit
print ' ' x $indent, $printme, "\n";
if ($line =~ /^\(/) {
$indent += 2;
}
}
print "</pre>\n";
print "</div>\n";
}
&clean_up_and_exit;
sub output_doctype_spiel {
print <<"EOF";
<p>
You should make the first line of your HTML document a DOCTYPE
declaration, like this:
</p>
<pre>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>Title</TITLE>
</HEAD>
<BODY>
<-- ... body of document ... -->
</BODY>
</HTML></pre>
<p>
Or, if you are using features from <a
href="http://www.w3.org/TR/REC-html40/">HTML 4.0</a>,
one of these:
</p>
<pre>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN"></pre>
EOF
}
sub output_closing {
print <<"EOF";
<hr>
<address>
<a href="http://validator.w3.org/check/referer"><img
src="http://validator.w3.org/images/vh40" height=31 width=88
align=right border=0 alt="Valid HTML 4.0!"></a>
<a href="/feedback.html">Gerald Oskoboiny</a><br>
$cvsdate
</address>
</body>
</html>
EOF
}
sub erase_stuff {
unlink $temp or warn "unlink($temp) returned: $!\n";
unlink "$temp.esis" or warn "unlink($temp.esis) returned: $!\n";
unlink "$temp.weblint";
}
sub make_log_entry {
my $msgindex;
open(LOG,">>$logfile") || die "couldn't append to log: $!";
print LOG "$ENV{REMOTE_HOST}\t$validity $version\t", $q->param('uri'), "\n";
foreach $msgindex (keys %undef_frag) {
print LOG "frag not defined for msgindex: $msgindex\n";
}
close( LOG ) || die "couldn't close log: $!";
}
sub clean_up_and_exit {
&output_closing;
&erase_stuff;
# &make_log_entry;
exit;
}
sub redirect_to_home_page {
print "Status: 302 Moved Permanently\n";
print "Content-Type: text/html\n";
print "Location: http://validator.w3.org/\n\n";
print "<title>Moved!</title>\n";
print "<p>\n";
print " Please see <a href=\"http://validator.w3.org/\">the validation service's home page.</a>\n";
print "</p>\n";
&clean_up_and_exit;
}
sub build_jump_links {
my $text;
my $count = 0;
$count++ if $q->param('ss');
$count++ if $q->param('sp');
$count++ if $q->param('weblint');
$count++ if $q->param('outline');
if ( $count ) {
$text .= " <p>\n Jump to: ";
if ( $q->param('weblint') ) {
$text .= "<a\n href=\"#weblint\">Weblint Results</a>";
$count--;
$text .= " or " if ( $count == 1 );
$text .= ", " if ( $count > 1 );
}
if ( $q->param('outline') ) {
$text .= "<a\n href=\"#outline\">Outline</a>";
$count--;
$text .= " or " if ( $count == 1 );
$text .= ", " if ( $count > 1 );
}
if ( $q->param('ss') ) {
$text .= "<a\n href=\"#source\">Source Listing</a>";
$count--;
$text .= " or " if ( $count == 1 );
$text .= ", " if ( $count > 1 );
}
if ( $q->param('sp') ) {
$text .= "<a\n href=\"#parse\">Parse Tree</a>";
}
$text .= ".\n </p>\n\n";
}
return $text;
}
sub check_for_doctype {
# check if the document has a doctype; if it doesn't, try to
# guess an appropriate one given the elements used
#
# returns 2 values:
#
# first value: 0 or 1:
# if 0, there was a doctype already present;
# if 1, there wasn't a doctype
#
# second value:
# the inferred doctype, if any
my $fileref = shift; # a reference to @file, for efficiency
my @file = @$fileref; # dereference $fileref
foreach $count (0..$#file) {
$line = $file[$count];
# does an HTML element precede the doctype on the same line?
last if $line =~ /<[a-z].*<!doctype/i;
if ( $line =~ /<!doctype/i ) { # found a doctype
my $dttext = join( "", @file[$count..$count+5] );
$dttext =~ s/\n//g;
$dttext =~ s/.*doctype\s+html\s+public\s*["']//i;
$dttext =~ s/["'].*//; # strip everything except the FPI
# @@ should make sure both quote chars were the same
return 0, $dttext;
}
$line =~ s/<!(?:--(?:[^-]|-[^-])*--\s*)+>//go; # strip comments,
# so the next line doesn't find commented-out markup etc.
# (this doesn't handle multi-line comments, unfortunately)
last if ( $line =~ /<[a-z]/i ); # found an element
}
# do several loops of increasing lengths to avoid iterating over
# the whole file if possible.
#
# these heuristics could be improved a lot.
foreach $line (@file[0..20]) {
return 1, $xhtmlt_doctype if $line =~ /xmlns\s*=/i;
}
foreach $line (@file[0..20]) {
return 1, $html40f_doctype if $line =~ /<frame/i;
}
foreach $line (@file[0..20]) {
return 1, $html40t_doctype if $line =~ /<(table|body )/i;
}
# go through the whole file
foreach $line (@file) {
return 1, $html40t_doctype if $line =~ /<(table|body )/i;
}
foreach $line (@file) {
return 1, $html32_doctype if $line =~ /<center>/i;
return 1, $html32_doctype if $line =~ /<[h0-9p]*\s*align\s*=\s*center>/i;
}
# no luck earlier; guess HTML 4.0 transitional
return 1, $html40t_doctype;
}
sub print_401_auth_required_message {
my $resource = shift;
my $realm = shift;
my $authHeader = shift;
print <<"EOF";
Status: 401 Authorization Required
WWW-Authenticate: $authHeader
Connection: close
Content-Type: text/html
<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">
<HTML><HEAD>
<TITLE>401 Authorization Required</TITLE>
</HEAD><BODY>
<H1>Authorization Required</H1>
<p>
Sorry, I am not authorized to access the specified URI.
</p>
<p>
The URI you specified,
</p>
<blockquote>
<code><a href="$resource">$resource</a></code>
</blockquote>
<p>
returned a 401 "authorization required" response when I tried
to download it.
</p>
<p>
You should have been prompted by your browser for a
username/password pair; if you had supplied this information, I
would have forwarded it to your server for authorization to
access the resource. You can use your browser's "reload" function
to try again, if you wish.
</p>
<p>
Of course, you may not want to trust me with this information,
which is fine. I can tell you that I don't log it or do
anything else nasty with it, and you can <a
href="http://validator.w3.org/source/">download the source for
this service</a> to see what it does, but you have no guarantee
that this is actually the code I'm using; you basically have to
decide whether to trust me or not. :-)
</p>
<p>
Note that you shouldn't use HTTP Basic Authentication for
anything which really needs to be private, since the password
goes across the network unencrypted.
</p>
EOF
}
sub print_unknown_http_error_message {
my $uri = shift;
my $code = shift;
my $message = shift;
print <<"EOF";
<p>
I got the following unexpected response when trying to
retrieve <code><a href="$uri">$uri</a></code>:
</p>
<blockquote>
<code>$code $message</code>
</blockquote>
<p>
Please make sure you have entered the URI correctly.
</p>
EOF
}
sub output_css_validator_blurb {
my $uri = shift;
print <<"EOHD";
<p>
If you use <a href="http://www.w3.org/Style/css/">CSS</a>
in your document, you should also <a
href="http://jigsaw.w3.org/css-validator/validator?uri=$uri">check
it for validity</a> using W3C's <a
href="http://jigsaw.w3.org/css-validator/">CSS
Validation Service</a>.
</p>
EOHD
}
sub html_element_ref {
# returns a URI pointing to docs on the HTML element given as $1
my $element = shift;
# the following hash was produced with:
#
# GET http://www.htmlhelp.com/reference/html40/alist.html > /tmp/e
# egrep '^ <li' /tmp/e | \
# perl -pe 's|.*href="([^"]*)">(.*)</a>.*|\t"\L$2\E" => "$1",|'
my %html_element_hash = (
"a" => "special/a.html",
"abbr" => "phrase/abbr.html",
"acronym" => "phrase/acronym.html",
"address" => "block/address.html",
"applet" => "special/applet.html",
"area" => "special/area.html",
"b" => "fontstyle/b.html",
"base" => "head/base.html",
"basefont" => "special/basefont.html",
"bdo" => "special/bdo.html",
"big" => "fontstyle/big.html",
"blockquote" => "block/blockquote.html",
"body" => "html/body.html",
"br" => "special/br.html",
"button" => "forms/button.html",
"caption" => "tables/caption.html",
"center" => "block/center.html",
"cite" => "phrase/cite.html",
"code" => "phrase/code.html",
"col" => "tables/col.html",
"colgroup" => "tables/colgroup.html",
"dd" => "lists/dd.html",
"del" => "phrase/del.html",
"dfn" => "phrase/dfn.html",
"dir" => "lists/dir.html",
"div" => "block/div.html",
"dl" => "lists/dl.html",
"dt" => "lists/dt.html",
"em" => "phrase/em.html",
"fieldset" => "forms/fieldset.html",
"font" => "special/font.html",
"form" => "forms/form.html",
"frame" => "frames/frame.html",
"frameset" => "frames/frameset.html",
"h1" => "block/h1.html",
"h2" => "block/h2.html",
"h3" => "block/h3.html",
"h4" => "block/h4.html",
"h5" => "block/h5.html",
"h6" => "block/h6.html",
"head" => "head/head.html",
"hr" => "block/hr.html",
"html" => "html/html.html",
"i" => "fontstyle/i.html",
"iframe" => "special/iframe.html",
"img" => "special/img.html",
"input" => "forms/input.html",
"ins" => "phrase/ins.html",
"isindex" => "block/isindex.html",
"kbd" => "phrase/kbd.html",
"label" => "forms/label.html",
"legend" => "forms/legend.html",
"li" => "lists/li.html",
"link" => "head/link.html",
"map" => "special/map.html",
"menu" => "lists/menu.html",
"meta" => "head/meta.html",
"noframes" => "frames/noframes.html",
"noscript" => "block/noscript.html",
"object" => "special/object.html",
"ol" => "lists/ol.html",
"optgroup" => "forms/optgroup.html",
"option" => "forms/option.html",
"p" => "block/p.html",
"param" => "special/param.html",
"pre" => "block/pre.html",
"q" => "special/q.html",
"s" => "fontstyle/s.html",
"samp" => "phrase/samp.html",
"script" => "special/script.html",
"select" => "forms/select.html",
"small" => "fontstyle/small.html",
"span" => "special/span.html",
"strike" => "fontstyle/strike.html",
"strong" => "phrase/strong.html",
"style" => "head/style.html",
"sub" => "special/sub.html",
"sup" => "special/sup.html",
"table" => "tables/table.html",
"tbody" => "tables/tbody.html",
"td" => "tables/td.html",
"textarea" => "forms/textarea.html",
"tfoot" => "tables/tfoot.html",
"th" => "tables/th.html",
"thead" => "tables/thead.html",
"title" => "head/title.html",
"tr" => "tables/tr.html",
"tt" => "fontstyle/tt.html",
"u" => "fontstyle/u.html",
"ul" => "lists/ul.html",
"var" => "phrase/var.html"
);
return "http://www.htmlhelp.com/reference/html40/" .
$html_element_hash{"\L$element"};
}
|
