2 # Common functions for HTML/XHTML output generation
3 # Copyright (C) 2003-2005 Jan Kratochvil <project-www.jankratochvil.net@jankratochvil.net>
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; exactly version 2 of June 1991 is required
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program; if not, write to the Free Software
16 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 require 5.6.0; # at least 'use warnings;' but we need some 5.6.0+ modules anyway
21 our $VERSION=do { my @r=(q$Revision$=~/\d+/g); sprintf "%d.".("%03d"x$#r),@r; };
32 &path_web &path_abs_disk
36 &img ¢erimg &rightimg
38 &input_hidden_persistents
41 our @ISA=qw(Tie::Handle Exporter);
43 my %packages_used_hash; # $packages_used_hash{$W->{"__PACKAGE__"}}{"_done"}=1;
44 my %packages_used_array;
48 use Carp qw(cluck confess);
49 $W->{"__My::Web_init"}=1;
55 # print STDERR "Wrequire $file\n";
62 for (my $depth=0;defined caller($depth);$depth++) {
63 $callers{caller($depth)}=1;
65 my $selfpkg=__PACKAGE__;
67 for my $target ($class,__PACKAGE__) {
68 for my $caller (keys(%callers)) {
69 next if $caller eq $target;
70 next if $packages_used_hash{$caller}{$target}++;
71 push @{$packages_used_array{$caller}},$target;
74 eval { CORE::require "$file"; } or confess $@;
75 1; # Otherwise 'require' would already file above.
82 # print STDERR "Wuse $file\n";
84 local $Exporter::ExportLevel=$Exporter::ExportLevel+1;
93 local $Exporter::ExportLevel=$Exporter::ExportLevel+1;
95 return $class->SUPER::import(@rest);
99 use WebConfig; # see also below: Wuse 'WebConfig';
101 require Image::Size; # for &imgsize
102 use File::Basename; # &basename
103 use Carp qw(cluck confess);
105 require HTTP::BrowserDetect;
106 require HTTP::Negotiate;
107 my $have_Geo_IP; BEGIN { $have_Geo_IP=eval { require Geo::IP; 1; }; }
108 # Do not: use ModPerl::Util qw(exit);
109 # to prevent in mod_perl2: "exit" is not exported by the ModPerl::Util module
111 use POSIX qw(strftime);
113 use Apache2::Const qw(HTTP_MOVED_TEMPORARILY OK);
123 # $W->{"force_charset"}
124 # $W->{"heading_done"}
125 # $W->{"footer_passed"}
127 # %{$W->{"headers_lc"}} # maps lc($headers_key)=>$headers_key
132 my($apache_request)=@_;
134 $packages_used_hash{$W->{"__PACKAGE__"}}{"_done"}=1;
140 sub request_check(;$)
144 # Use &eval to prevent: Global $r object is not available. Set:\n\tPerlOptions +GlobalRequest\nin ...
145 # CGI requires valid "r": check it beforehand here.
146 confess "Calling sensitive dynamic code from a static code" if !eval { Apache2::RequestUtil->request(); };
147 # Do not: confess "Calling sensitive dynamic code without My::Web::init" if !$W->{"__PACKAGE__"};
148 # as it is valid at least while preparing arguments to call: &project::Lib::init
155 print STDERR "$class->init ".Apache2::RequestUtil->request()->unparsed_uri()."\n";
157 # We need to track package dependencies, so we need to call it from &init.
158 # We cannot do it in BEGIN { } block
159 # as it would not be tracked for each of the toplevel users later.
161 Wrequire 'My::Hash::Sub';
164 tie %$W,"My::Hash::Sub";
165 %$W=(%WebConfig,%args); # override %WebConfig settings
166 $W->{"__PACKAGE__"}||=caller();
168 # {"__PACKAGE__"} is mandatory for mod_perl-2.0;
169 # $Apache2::Registry::curstash is no longer supported.
170 do { cluck "No $_" if !$W->{$_}; } for "__PACKAGE__";
173 do { cluck "charset==$_, expecting ISO-8859-1" if $_ ne "ISO-8859-1"; } for CGI::charset();
174 CGI::charset("utf-8");
176 do { $W->{$_}=0 if !defined $W->{$_}; } for "detect_ent";
177 do { $W->{$_}=0 if !defined $W->{$_}; } for "detect_js";
178 do { $W->{$_}=1 if !defined $W->{$_}; } for "have_css"; # AFAIK it does not hurt anyone.
179 do { $W->{$_}=0 if !defined $W->{$_}; } for "css_inherit";
180 do { $W->{$_}=1 if !defined $W->{$_}; } for "footer";
181 do { $W->{$_}=1 if !defined $W->{$_}; } for "footer_delimit";
182 do { $W->{$_}=1 if !defined $W->{$_}; } for "footer_ids";
183 do { $W->{$_}=1 if !defined $W->{$_}; } for "indexme";
184 do { $W->{$_}="" if !defined $W->{$_}; } for "head";
185 do { $W->{$_}="" if !defined $W->{$_}; } for "body_attr";
186 do { $W->{$_}="en-US" if !defined $W->{$_}; } for "language";
189 for (qw(footer_ids)) {
190 $W->{$_}=0 if !$W->{"footer"};
191 $footer_any=1 if $W->{$_};
193 $W->{"footer"}=0 if !$footer_any;
194 $W->{"footer_delimit"}=0 if !$W->{"footer"};
196 $W->{"r"}=Apache2::RequestUtil->request();
198 $W->{"r"}->push_handlers("PerlCleanupHandler"=>\&cleanup);
200 $W->{"web_hostname"}||=$W->{"r"}->hostname();
202 tie *STDOUT,$W->{"r"};
206 $W->{"QUERY_STRING"}=$W->{"r"}->args() || "";
207 if ($W->{"detect_ent"}) {
208 if ($W->{"QUERY_STRING"}=~/[&]amp;have_ent/)
209 { $W->{"have_ent"}=0; }
210 elsif ($W->{"QUERY_STRING"}=~ /[&]have_ent/)
211 { $W->{"have_ent"}=1; }
213 { delete $W->{"have_ent"}; }
214 if (!defined $W->{"have_ent"} && $W->{"r"}->method() eq "GET") {
215 $W->{"head"}.='<meta http-equiv="Refresh" content="0; URL='
216 .escapeHTML("http://".$W->{"web_hostname"}."/".($W->{"r"}->uri()=~m#^/*(.*)$#)[0]
217 ."?".($W->{"QUERY_STRING"} || "detect_ent_glue=1").'&have_ent=detect')
221 $W->{"QUERY_STRING"}=~s/([&])amp;/$1/g;
222 $W->{"r"}->args($W->{"QUERY_STRING"});
223 # Workaround: &CGI::Vars behaves weird if strings passed both as POST data and in: $QUERY_STRING
224 do { $W->{"r"}->args(""); delete $ENV{"QUERY_STRING"}; } if $W->{"r"}->method() eq "POST";
225 # Do not: $W->{"r"}->args()
226 # as it parses only QUERY_STRING (not POST data).
227 $W->{"args"}={ CGI->new($W->{"r"})->Vars() };
228 for my $name (keys(%{$W->{"args"}})) {
229 my @vals=split /\x00/,$W->{"args"}{$name};
231 $W->{"args"}{$name}=[@vals];
234 do { $W->{$_}=$W->{"r"}->headers_in()->{"Accept"} if !defined $W->{$_}; } for ("accept");
235 do { $W->{$_}=$W->{"r"}->headers_in()->{"User-Agent"}||"" if !defined $W->{$_}; } for ("user_agent");
237 $W->{"browser"}=HTTP::BrowserDetect->new($W->{"user_agent"});
239 if (!defined $W->{"have_style"}) {
240 $W->{"have_style"}=(!$W->{"browser"}->netscape() || ($W->{"browser"}->major() && $W->{"browser"}->major()>4) ? 1 : 0);
243 $W->{"have_js"}=($W->{"args"}{"have_js"} ? 1 : 0);
244 if ($W->{"detect_js"} && !$W->{"have_js"}) {
245 $W->{"head"}.='<script type="text/javascript" src="'.uri_escaped(path_web('/have_js.pm')).'"></script>'."\n";
248 do { _args_check(%$_) if $_; } for ($W->{"args_check"});
250 return bless $W,$class;
253 # Although we have &tie-d *STDOUT we try to not to be dependent on it in My::Web itself.
254 # Do not: Wprint $W->{"heading"},"undef"=>1;
255 # as we would need to undef() it to turn it off and it would get defaulted in such case.
256 # Do not: exists $W->{"heading"}
257 # as we use a lot of 'for $W->{"heading"}' which instantiates it with the value: undef()
262 cluck "undef Wprint" if !defined $text && !$args{"undef"};
263 delete $args{"undef"};
264 cluck join(" ","Invalid arguments:",keys(%args)) if keys(%args);
265 $W->{"r"}->puts($text) if defined $text;
272 # Prevent &CGI::escapeHTML breaking utf-8 strings like: \xC4\x9B eq \x{11B}
273 # Prevent case if we run under mod_perl but still just initializing:
274 request_check() if $ENV{"MOD_PERL"};
275 # Generally we are initialized from &init but we may be used without it without mod_perl
276 # and in such case check the change on all non-first invocations.
278 if (!$ENV{"MOD_PERL"} && $init++) {
279 do { cluck "charset==$_" if $_ ne "utf-8"; } for CGI::charset();
281 CGI::charset("utf-8");
283 return CGI::escapeHTML($text);
287 # tie *FH,ref($W),$W;
293 $self->{"W"}=$W or confess "Missing W";
294 return bless $self,$class;
299 my($self,$scalar,$length,$offset)=@_;
301 Wprint substr($scalar,0,$length);
304 # /home/user/www/webdir
305 sub dir_top_abs_disk()
307 our $dir_top_abs_disk;
308 if (!$dir_top_abs_disk) {
309 my $selfpkg_relpath=__PACKAGE__;
310 $selfpkg_relpath=~s{::}{/}g;
311 $selfpkg_relpath.=".pm";
312 my $selfpkg_abspath=$INC{$selfpkg_relpath} or do {
313 cluck "Unable to find self package $selfpkg_relpath";
316 $selfpkg_abspath=~s{/*\Q$selfpkg_relpath\E$}{} or do {
317 cluck "Unable to strip myself \"$selfpkg_relpath\" from the abspath: $selfpkg_abspath";
320 cluck "INC{myself} is relative?: $selfpkg_abspath" if $selfpkg_abspath!~m{^/};
321 $dir_top_abs_disk=$selfpkg_abspath;
323 return $dir_top_abs_disk;
329 if (!$W->{"unparsed_uri"}) {
331 # as we may be called before &init from: &My::Project::init
332 my $r=Apache2::RequestUtil->request();
333 cluck "Calling ".'&unparsed_uri'." from a static code, going to fail" if !$r;
334 my $uri_string=$r->unparsed_uri() or cluck "Valid 'r' missing unparsed_uri()?";
335 my $uri=URI->new_abs($uri_string,"http://".$W->{"web_hostname"}."/");
336 $W->{"unparsed_uri"}=$uri;
338 return $W->{"unparsed_uri"};
345 # Otherwise we may have been already processed and thus legally relativized.
346 # FIXME data: Currently disabled, all the data are too violating such rule.
348 my $uri_check=URI->new($in);
349 $uri_check->scheme() || $in=~m{^\Q./\E} || $in=~m{^/}
350 or cluck "Use './' or '/' prefix for all the local references: $in";
352 my $uri=URI->new_abs($in,unparsed_uri());
353 $uri=$uri->canonical();
357 # $args{"uri_as_in"}=1 to permit passing URI objects as: $in
363 cluck if !$args{"uri_as_in"} && ref $in;
364 my $uri=in_to_uri_abs($in);
365 if (uri_is_local($uri)) {
366 # Prefer the $uri values over "args_persistent" values.
367 $uri->query_form_hash({
370 my $val=$W->{"args"}{$key};
371 (!defined $val ? () : ($key=>$val));
372 } keys(%{$W->{"args_persistent"}})),
373 %{$uri->query_form_hash()},
376 return $uri->abs(unparsed_uri()) if $W->{"args"}{"Wabs"} || $args{"abs"};
377 return $uri->rel(unparsed_uri());
380 # $args{"uri_as_in"}=1 to permit passing URI objects as: $in
381 sub path_abs_disk($%)
385 cluck if !$args{"uri_as_in"} && ref $in;
386 my $uri=in_to_uri_abs($in);
387 cluck if !uri_is_local($uri);
388 my $path=$uri->path();
389 cluck "URI compatibility: ->path() not w/leading slash of URI \"$uri\"; path: $path" if $path!~m{^/};
390 return dir_top_abs_disk().$path;
399 while (my($name,$regex)=each(%tmpl)) {
400 my $name_html="Parameter <span class=\"quote\">".escapeHTML($name)."</span>";
401 $W->{"args"}{$name}="" if !defined $W->{"args"}{$name};
402 $W->{"args"}{$name}=[ $W->{"args"}{$name} ] if !ref $W->{"args"}{$name} && ref $regex;
403 fatal "$name_html passed as multivar although singlevar expected"
404 if ref $W->{"args"}{$name} && !ref $regex;
405 $regex=$regex->[0] if ref $regex;
406 for my $val (!ref $W->{"args"}{$name} ? $W->{"args"}{$name} : @{$W->{"args"}{$name}}) {
407 $val="" if !defined $val;
408 fatal "$name_html <span class=\"quote\">".escapeHTML($val)."</span>"
409 ." does not match the required regex <span class=\"quote\">".escapeHTML($regex)."</span> "
410 if $regex ne "" && $val!~/$regex/;
419 return '<p'.(!defined $height ? "" : ' style="height: '.$height.';"').'> </p>'."\n";
426 $msg="UNKNOWN" if !$msg;
429 # Do not send it unconditionally.
430 # The intial duplicated '<?xml...' crashes Gecko parser.
431 $W->{"heading_done"}=0 if $W->{"header_only"};
432 # Do not send it unconditionally.
433 # Prevents warn: Headers already sent
434 if (!$W->{"heading_done"}) {
435 $W->{"indexme"}=0; # For the case no heading was sent yet.
436 $W->{"header_only"}=0; # assurance for &heading
439 Wprint "\n".vskip("3ex")."<hr /><h1 class=\"error\">FATAL ERROR: $msg!</h1>\n"
440 ."<p>You can report this problem's details to"
441 ." ".a_href("mailto:".$W->{"admin_mail"},"admin of this website").".</p>\n";
447 exit 1 if $W->{"footer_passed"}++; # deadlock prevention:
449 Wprint vskip if $W->{"footer_delimit"};
451 do { Wprint $_ if $_; } for $W->{"footing_delimit"};
453 Wprint "<hr />\n" if $W->{"footer"};
455 my $packages_used=$packages_used_array{$W->{"__PACKAGE__"}};
457 if ($W->{"footer_ids"}) {
458 Wprint '<p class="cvs-id">';
459 Wprint join("<br />\n",map({ my $package=$_;
460 my $cvs_id=(eval('$'.$package."::CVS_ID")
461 # || $package # debug
467 $cvs_id='$'.$cvs_id.'$'; # Eaten by 'q' operator.
468 my @cvs_id_split=split / +/,$cvs_id;
469 if (@cvs_id_split==8) {
476 my $path_abs_disk=path_abs_disk("/$file$ext");
477 push @tried,$path_abs_disk;
478 last if -r $path_abs_disk;
479 cluck "Class file $file not found; tried: ".join(" ",@tried) if !$ext;
483 .a_href((map({ my $s=$_; $s=~s#/viewcvs/#$&~checkout~/#; $s; } $W->{"viewcvs"}))[0]."$file?rev=".$cvs_id_split[2],
485 $cvs_id_split[1]=a_href($W->{"viewcvs"}.$file,
486 ($package!~/^Apache2::/ ? $package : $cvs_id_split[1]));
487 $cvs_id_split[5]=&{$W->{"cvs_id_author_sub"}}($cvs_id_split[5]);
489 join " ",@cvs_id_split;
495 for my $package (@$packages_used) {
496 my $cvs_id=(eval('$'.$package."::CVS_ID")
497 # || $package # debug
499 Wprint '<!-- '.$package.' - $'.$cvs_id.'$ -->'."\n" if $cvs_id;
502 do { Wprint $_ if $_; } for $W->{"footing"};
504 Wprint "</body></html>\n";
512 while (my($key,$val)=each(%pairs)) {
513 do { cluck "Headers already sent"; next; } if $W->{"heading_done"};
514 for ($W->{"headers_lc"}{lc $key} || ()) {
515 delete $W->{"headers"}{$_};
517 $W->{"headers_lc"}{lc $key}=$key;
518 $W->{"headers"}{$key}=$val;
528 elsif ($size<1024*1024)
529 { $size=sprintf "%.1fK",$size/1024; }
531 { $size=sprintf "%.1fM",$size/1024/1024; }
540 my $uri_rel=in_to_uri_abs($in)->rel(unparsed_uri());
541 # Do not: defined $uri_rel->("userinfo"|"host"|"port")();
542 # as they fail to be called for schemes not supporting them.
543 return 0 if $uri_rel->scheme();
544 return 0 if $uri_rel->authority();
548 # &path_web still may be required for &uri_escaped !
554 my $urient=escapeHTML($uri);
555 return $uri if $uri eq $urient;
557 return $urient if uri_is_local $uri;
558 return $uri if defined $W->{"have_ent"} && !$W->{"have_ent"}; # non-ent client
559 return $urient if $W->{"have_ent"}; # ent client
560 # Unknown client, &escapeHTML should not be needed here:
561 return escapeHTML(path_web('/Redirect.pm?location='.uri_escape($uri->abs(unparsed_uri()))));
564 our $a_href_inhibited;
567 my($in,$contents,%args)=@_;
570 do { $$_=1 if !defined $$_; } for (\$args{"size"});
571 if (!defined $contents) {
573 $contents=File::Basename::basename($contents) if $args{"basename"};
574 $contents=escapeHTML($contents);
576 $contents=~s#<a\b[^>]*>##gi;
577 $contents=~s#</a>##gi;
578 return $contents if $a_href_inhibited;
580 my $path_web=path_web $in,%args;
583 $r.=uri_escaped $path_web;
585 do { $r.=" $_" if $_; } for ($args{"attr"});
586 $r.='>'.$contents.'</a>';
587 if ($args{"size"} && uri_is_local($in) && ($args{"size"}>=2 || $in=~/[.](?:gz|Z|rpm|zip|deb|lha)/)) { # Downloadable?
588 my $path_abs_disk=path_abs_disk $in,%args;
589 cluck "File not readable: $path_abs_disk" if !-r $path_abs_disk;
590 $r.=' ('.size_display((stat($path_abs_disk))[7]).')';
595 sub a_href_inhibit($$;@)
597 my($self,$sub,@sub_args)=@_;
599 local $a_href_inhibited=1;
600 return &{$sub}(@sub_args);
603 sub input_hidden_persistents()
608 my $val=$W->{"args"}{$key};
609 (!defined $val ? () : '<input type="hidden"'
610 .' name="'.escapeHTML($key).'"'
611 .' value="'.escapeHTML($val).'"'
613 } (keys(%{$W->{"args_persistent"}}))));
618 my($self,$url,$status)=@_;
620 $url=path_web($url,"abs"=>1);
621 $status||=HTTP_MOVED_TEMPORARILY;
622 $W->{"r"}->status($status);
623 $W->{"r"}->headers_out()->{"Location"}=$url;
624 $W->{"header_only"}=1;
632 # Do not: PerlModule Apache2::ForwardedFor
633 # PerlPostReadRequestHandler Apache2::ForwardedFor
634 # As 'Apache2::ForwardedFor' takes the first of $ENV{"HTTP_X_FORWARDED_FOR"}
635 # while the contents is '127.0.0.1, 213.220.195.171' if client has its own proxy.
636 # We must take the last item ourselves.
637 my $r=$W->{"r"}->headers_in()->{"X-Forwarded-For"} || $W->{"r"}->get_remote_host();
644 return 0 if !$have_Geo_IP;
645 return "CZ" eq Geo::IP->new()->country_code_by_addr(remote_ip());
650 my($url,$contents,%args)=@_;
652 return a_href $url,$contents,%args if is_cz();
660 # FIXME: &alarm, --timeout is now infinite.
661 # FIXME: Try to remove bash(1).
662 # FIXME: Use: @PATH_FLOCK@
663 my @argv=('flock',dir_top_abs_disk(),'bash','-c',$cmd.' >&2');
664 print STDERR join(" ","SPAWN:",@argv)."\n";
672 cluck "Pathname not absolute: $file" if $file!~m{^/};
674 # TODO: Somehow quickly check dependencies?
675 return make('make -s --no-print-directory'
676 .' -C '."'".File::Basename::dirname($file)."' '".File::Basename::basename($file)."'");
681 my($width,$height)=@_;
683 cluck if !defined $width || !defined $height;
684 return ($W->{"have_style"} ? "style=\"border:0;width:${width}px;height:${height}px\"" : "border=\"0\"")
685 ." width=\"$width\" height=\"$height\"";
688 sub negotiate_variant (%)
692 my @fields=("id","qs","content-type","encoding","charset","lang","size");
693 return [ map(($args{$_}),@fields) ];
696 # Input: $self is required!
697 # Input: Put the fallback variant as the first one.
698 # Returns: always only scalar!
699 sub Negotiate_choose($$)
701 my($self,$variants)=@_;
703 my $best=HTTP::Negotiate::choose($variants,
705 # to prevent: Can't locate object method "scan" via package "Apache2::RequestRec" at HTTP/Negotiate.pm line 84.
706 # Do not: $W->{"r"}->headers_in()
707 # to prevent: Can't locate object method "scan" via package "APR::Table" at HTTP/Negotiate.pm line 84.
708 # Do not: HTTP::Headers->new($W->{"r"}->headers_in());
709 # to prevent empty result or even: Odd number of elements in anonymous hash
710 HTTP::Headers->new(%{$W->{"r"}->headers_in()}));
711 $best||=$variants->[0][0]; # $variants->[0]{"id"}; &HTTP::Negotiate::choose failed?
716 { "id"=>"png","qs"=>0.9,"content-type"=>"image/png" },
717 { "id"=>"gif","qs"=>0.7,"content-type"=>"image/gif" },
719 my $img_variants_re='[.](?:'.join('|',"jpeg",map(($_->{"id"}),@img_variants)).')$';
721 # Returns: ($path_web,$path_abs_disk)
722 # URI path segments support ignored here. Where it is used? (';' path segment options)
727 cluck if !uri_is_local $in;
728 my $uri=in_to_uri_abs $in;
729 my $path_abs_disk=path_abs_disk $uri,%args,"uri_as_in"=>1;
731 # Known image extension?
732 return path_web($uri,%args,"uri_as_in"=>1),$path_abs_disk if $uri->path()=~m#$img_variants_re#o;
735 for my $var (@img_variants) {
736 my $path_abs_disk_variant=$path_abs_disk.".".$var->{"id"};
737 __PACKAGE__->make_file($path_abs_disk_variant);
738 push @nego_variants,negotiate_variant(
740 "size"=>(stat $path_abs_disk_variant)[7],
743 my $ext=__PACKAGE__->Negotiate_choose(\@nego_variants);
745 $uri->path($uri->path().".$ext");
746 return path_web($uri,%args,"uri_as_in"=>1),path_abs_disk($uri,%args,"uri_as_in"=>1);
752 my($in,$alt,%args)=@_;
755 my($path_web,$path_abs_disk)=_img_src($in,%args);
756 my($width,$height)=Image::Size::imgsize($path_abs_disk);
758 $alt=escapeHTML($alt);
759 my $content="<img src=\"".uri_escaped($path_web)."\" alt=\"$alt\" title=\"$alt\" ".img_size($width,$height)
760 .(!$args{"attr"} ? "" : " ".$args{"attr"})." />";
761 do { return a_href((_img_src($_))[0],$content,"uri_as_in"=>1) if $_; } for $args{"a_href_img"};
762 do { return a_href $_,$content if $_; } for $args{"a_href"};
769 $r.='<table border="0" width="100%"><tr>'."\n";
770 @_=( [@_] ) if !ref $_[0];
772 $r.="\t".'<td align="center">'.&{\&img}(@$_).'</td>'."\n";
774 $r.='</tr></table>'."\n";
780 my($text,@args_img)=@_;
782 # FIXME: Workaround bug of 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)':
783 # <col width="@{[ (!$W->{"browser"}->ie() ? "1*" : "90%" ) ]}" />
784 # <col width="@{[ (!$W->{"browser"}->ie() ? "0*" : "10%" ) ]}" />
785 # causes whole invisible projects in: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050719 Galeon/1.3.21
787 <table border="0" width="100%">
793 @{[ &{\&img}(@args_img) ]}
802 my($class,$filename)=@_;
805 open F,$filename or cluck "Cannot open \"$filename\": $!";
806 my $F=do { local $/=undef(); <F>; };
807 close F or cluck "Cannot close \"$filename\": $!";
815 header("Expires"=>HTTP::Date::time2str(1000000000)); # date in the past
816 header("Last-Modified"=>HTTP::Date::time2str()); # always modified
817 header("Cache-Control"=>join(", ",
822 "pre-check=0", # MSIE
823 "post-check=0", # MSIE
825 header("Pragma"=>"no-cache"); # HTTP/1.0
826 header("Vary"=>"*"); # content may ba based on unpredictable sources
833 return if !$packages_used_hash{$W->{"__PACKAGE__"}}{"_done"};
835 for my $package_orig (@{$packages_used_array{$W->{"__PACKAGE__"}}}) {
836 local $_=$package_orig;
839 my $path_abs_disk=path_abs_disk("/$_");
840 my $mtime=(stat $path_abs_disk)[9];
841 do { cluck "No mtime for: $path_abs_disk"; next; } if !$mtime;
842 $mtime_newest=$mtime if !$mtime_newest || $mtime_newest<$mtime;
844 cluck "No mtime_newest found for the current W __PACKAGE__: ".$W->{"__PACKAGE__"}
846 # "Vary" header is REQUIRED in this case:
847 header("Last-Modified"=>HTTP::Date::time2str($mtime_newest));
855 # $ENV{"CLIENT_CHARSET"} ignored (mod_czech support dropped!)
856 my $client_charset=$W->{"force_charset"} || "us-ascii";
857 header("Content-Style-Type"=>"text/css");
858 header("Content-Script-Type"=>"text/javascript");
859 do { header("Content-Language"=>$_) if $_; } for $W->{"language"};
860 $class->last_modified() if !$W->{"no_cache"};
861 $class->no_cache() if $W->{"no_cache"};
863 while (my($key,$val)=each(%{$W->{"headers"}})) {
864 $W->{"r"}->headers_out()->{$key}=$val;
866 exit if $W->{"r"}->header_only();
867 return if $W->{"header_only"};
868 # We still can append headers before we put out some text.
869 # FIXME: It is not clean to still append them without overwriting.
870 return if $W->{"heading_done"}++;
873 # https://bugzilla.mozilla.org/show_bug.cgi?id=120556
875 # Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8b) Gecko/20050217
877 # http://validator.w3.org/ does not send ANY "Accept" headers!
878 $mime||="application/xhtml+xml" if !$W->{"accept"} && $W->{"user_agent"}=~m{^W3C_Validator/}i;
879 $mime||=$class->Negotiate_choose([
880 # Put the fallback variant as the first one.
881 # Rate both variants the same to prefer "text/html" for undecided clients.
883 # Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8b) Gecko/20050217
884 # prefers "application/xhtml+xml" over "text/html" itself:
885 # text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
888 "content-type"=>"text/html",
890 "charset"=>$client_charset,
891 "lang"=>$W->{"language"},
894 "id"=>"application/xhtml+xml",
895 "content-type"=>"application/xhtml+xml",
897 "charset"=>$client_charset,
898 "lang"=>$W->{"language"},
903 $W->{"r"}->content_type("$mime; charset=$client_charset");
904 Wprint '<?xml version="1.0" encoding="'.$client_charset.'"?>'."\n" if $mime=~m{^application/\w+[+]xml$};
905 return if $W->{"xml_header_only"};
906 Wprint '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'."\n";
907 Wprint '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="'.$W->{"language"}.'">'."\n";
908 my $title=$W->{"title_prefix"}.join("",map({ ': '.$_; } ($W->{"title"} || ())));
909 # Do not: cluck if $title=~/[<>]/;
910 # as it is not solved just by: &a_href_inhibit
911 # as sometimes titles use also: <i>...</i>
912 $title=~s#<[^>]*>##g;
914 Wprint "<title>$title</title>\n";
915 if ($W->{"have_css"}) {
916 # Everything can get overriden later.
917 for my $css ("/My/Web.css",map((!$_ ? () : ("ARRAY" ne ref($_) ? $_ : @$_)),$W->{"css_push"})) {
919 <link rel="stylesheet" type="text/css" href="@{[ uri_escaped(path_web $css) ]}" />
922 if ($W->{"css_inherit"}) {
924 <script type="text/javascript" src="@{[ uri_escaped(path_web('/My/css_inherit.js')) ]}" />
928 Wprint '<meta name="robots" content="'.($W->{"indexme"} ? "" : "no" ).'index,follow" />'."\n";
930 for my $type (qw(prev next index contents start up)) {
931 do { Wprint '<link rel="'.$type.'" href="'.uri_escaped(path_web $_).'" />'."\n" if $_; }
932 for ($W->{"rel_$type"});
934 Wprint "</head><body";
935 # Wprint ' bgcolor="black" text="white" link="aqua" vlink="teal"'
936 # if $W->{"browser"}->netscape() && (!$W->{"browser"}->major() || $W->{"browser"}->major()<=4);
937 Wprint $W->{"body_attr"};
940 do { Wprint $_ if $_; } for $W->{"heading"};
944 delete $W->{"__My::Web_init"};