version 1.1, 2000/08/30 11:10:23
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version 1.9, 2000/09/25 20:31:33
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Line 4
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Line 4
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# (TeX Content Handler |
# (TeX Content Handler |
# |
# |
# 05/29/00,05/30 Gerd Kortemeyer) |
# 05/29/00,05/30 Gerd Kortemeyer) |
# 08/30 Gerd Kortemeyer |
# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23 Gerd Kortemeyer |
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package Apache::lonpage; |
package Apache::lonpage; |
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use strict; |
use strict; |
use Apache::Constants qw(:common :http); |
use Apache::Constants qw(:common :http); |
use Apache::lonnet(); |
use Apache::lonnet(); |
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use HTML::TokeParser; |
use GDBM_File; |
use GDBM_File; |
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# -------------------------------------------------------------- Module Globals |
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my %hash; |
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my @rows; |
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# ------------------------------------------------------------------ Euclid gcd |
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sub euclid { |
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my ($e,$f)=@_; |
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my $a; my $b; my $r; |
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if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; } |
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while ($r!=0) { |
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$a=$b; $b=$r; |
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$r=$a%$b; |
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} |
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return $b; |
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} |
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# ------------------------------------------------------------ Build page table |
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sub tracetable { |
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my ($sofar,$rid,$beenhere)=@_; |
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my $further=$sofar; |
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unless ($beenhere=~/\&$rid\&/) { |
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$beenhere.=$rid.'&'; |
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if (defined($hash{'is_map_'.$rid})) { |
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if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) && |
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(defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) { |
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my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}}; |
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$sofar= |
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&tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}}, |
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'&'.$frid.'&'); |
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$sofar++; |
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if ($hash{'src_'.$frid}) { |
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my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid}); |
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if (($brepriv eq '2') || ($brepriv eq 'F')) { |
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if (defined($rows[$sofar])) { |
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$rows[$sofar].='&'.$frid; |
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} else { |
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$rows[$sofar]=$frid; |
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} |
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} |
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} |
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} |
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} else { |
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$sofar++; |
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if ($hash{'src_'.$rid}) { |
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my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid}); |
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if (($brepriv eq '2') || ($brepriv eq 'F')) { |
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if (defined($rows[$sofar])) { |
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$rows[$sofar].='&'.$rid; |
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} else { |
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$rows[$sofar]=$rid; |
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} |
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} |
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} |
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} |
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if (defined($hash{'to_'.$rid})) { |
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map { |
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my $now=&tracetable($sofar,$hash{'goesto_'.$_},$beenhere); |
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if ($now>$further) { $further=$now; } |
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} split(/\,/,$hash{'to_'.$rid}); |
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} |
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} |
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return $further; |
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} |
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# ================================================================ Main Handler |
# ================================================================ Main Handler |
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sub handler { |
sub handler { |
my $r=shift; |
my $r=shift; |
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# ----------------------------------------------------------- Set document type |
# ------------------------------------------- Set document type for header only |
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if ($ENV{'browser.mathml'}) { |
if ($r->header_only) { |
$r->content_type('text/xml'); |
if ($ENV{'browser.mathml'}) { |
} else { |
$r->content_type('text/xml'); |
$r->content_type('text/html'); |
} else { |
} |
$r->content_type('text/html'); |
$r->send_http_header; |
} |
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$r->send_http_header; |
return OK if $r->header_only; |
return OK; |
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} |
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my $requrl=$r->uri; |
my $requrl=$r->uri; |
# ----------------------------------------------------------------- Tie db file |
# ----------------------------------------------------------------- Tie db file |
if ($ENV{'request.course.fn'}) { |
if ($ENV{'request.course.fn'}) { |
my $fn=$ENV{'request.course.fn'}; |
my $fn=$ENV{'request.course.fn'}; |
if (-e "$fn.db") { |
if (-e "$fn.db") { |
my %hash; |
if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) { |
if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT,0640)) { |
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# ------------------------------------------------------------------- Hash tied |
# ------------------------------------------------------------------- Hash tied |
my $firstres=$hash{'map_start_'.$requrl}; |
my $firstres=$hash{'map_start_'.$requrl}; |
my $lastres=$hash{'map_finish_'.$requrl}; |
my $lastres=$hash{'map_finish_'.$requrl}; |
if (($firstres) && ($lastres)) { |
if (($firstres) && ($lastres)) { |
# ----------------------------------------------------------------- Render page |
# ----------------------------------------------------------------- Render page |
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$r->print("<h2>All is cool.</h2>"); |
@rows=(); |
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&tracetable(0,$firstres,'&'.$lastres.'&'); |
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if ($hash{'src_'.$lastres}) { |
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my $brepriv= |
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&Apache::lonnet::allowed('bre',$hash{'src_'.$lastres}); |
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if (($brepriv eq '2') || ($brepriv eq 'F')) { |
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$rows[$#rows+1]=''.$lastres; |
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} |
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} |
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# ------------------------------------------------------------ Add to symb list |
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my $i; |
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my %symbhash=(); |
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for ($i=0;$i<=$#rows;$i++) { |
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if ($rows[$i]) { |
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my @colcont=split(/\&/,$rows[$i]); |
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map { |
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$symbhash{$hash{'src_'.$_}}=''; |
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} @colcont; |
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} |
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} |
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&Apache::lonnet::symblist($requrl,%symbhash); |
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# ------------------------------------------------------------------ Page parms |
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my $j; |
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my $lcm=1; |
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my $contents=0; |
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my $nforms=0; |
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my %ssibody=(); |
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my %ssibgcolor=(); |
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my %ssitext=(); |
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my %ssilink=(); |
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my %ssivlink=(); |
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my %ssialink=(); |
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my %cellemb=(); |
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my $allscript=''; |
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my $allmeta=''; |
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my $isxml=0; |
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my $xmlheader=''; |
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my $xmlbody=''; |
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# --------------------------------------------- Get SSI output, post parameters |
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for ($i=0;$i<=$#rows;$i++) { |
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if ($rows[$i]) { |
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$contents++; |
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my @colcont=split(/\&/,$rows[$i]); |
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$lcm*=($#colcont+1)/euclid($lcm,($#colcont+1)); |
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map { |
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my $src=$hash{'src_'.$_}; |
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$src=~/\.(\w+)$/; |
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$cellemb{$_}=Apache::lonnet::fileembstyle($1); |
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if ($cellemb{$_} eq 'ssi') { |
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# --------------------------------------------------------- This is an SSI cell |
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my $prefix=$_.'_'; |
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my %posthash=('request.prefix' => $prefix); |
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if (($ENV{'form.'.$prefix.'submit'}) |
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|| ($ENV{'form.all_submit'})) { |
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map { |
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if ($_=~/^form.$prefix/) { |
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my $name=$_; |
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$name=~s/^form.$prefix//; |
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$posthash{$name}=$ENV{$_}; |
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} |
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} keys %ENV; |
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} |
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my $output=Apache::lonnet::ssi($src,%posthash); |
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my $parser=HTML::TokeParser->new(\$output); |
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my $token; |
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my $bodydef=0; |
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my $thisxml=0; |
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if ($output=~/\?xml/) { |
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$isxml=1; |
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$thisxml=1; |
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$output=~ |
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/((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si; |
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$xmlheader=$1; |
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} |
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while (($bodydef==0) && |
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($token=$parser->get_token)) { |
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if ($token->[1] eq 'body') { |
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$bodydef=1; |
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$ssibgcolor{$_}=$token->[2]->{'bgcolor'}; |
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$ssitext{$_}=$token->[2]->{'text'}; |
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$ssilink{$_}=$token->[2]->{'link'}; |
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$ssivlink{$_}=$token->[2]->{'vlink'}; |
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$ssialink{$_}=$token->[2]->{'alink'}; |
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if ($thisxml) { |
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$xmlbody=$token->[4]; |
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} |
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} |
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if ($token->[1] eq 'meta') { |
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$allmeta.="\n".$token->[4].'</meta>'; |
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} |
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if ($token->[1] eq 'script') { |
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$allscript.="\n\n" |
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.$parser->get_text('/script'); |
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} |
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} |
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if ($output=~/\<body[^\>]*\>(.*)/si) { |
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$output=$1; |
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} |
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$output=~s/\<\/body\>.*//si; |
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if ($output=~/\<form/si) { |
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$nforms++; |
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$output=~s/\<form[^\>]*\>//gsi; |
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$output=~s/\<\/form[^\>]*\>//gsi; |
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} |
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$ssibody{$_}=$output; |
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# ---------------------------------------------------------------- End SSI cell |
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} |
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} @colcont; |
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} |
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} |
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unless ($contents) { |
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$r->content_type('text/html'); |
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$r->send_http_header; |
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$r->print('<html><body>Empty page.</body></html>'); |
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} else { |
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# ------------------------------------------------------------------ Build page |
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# ---------------------------------------------------------------- Send headers |
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if ($isxml) { |
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$r->content_type('text/xml'); |
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$r->send_http_header; |
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$r->print($xmlheader); |
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} else { |
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$r->content_type('text/html'); |
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$r->send_http_header; |
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$r->print('<html>'); |
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} |
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# ------------------------------------------------------------------------ Head |
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$r->print("\n<head>\n".$allmeta); |
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if ($allscript) { |
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$r->print("\n<script>\n".$allscript."\n</script>\n"); |
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} |
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$r->print("\n</head>\n"); |
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# ------------------------------------------------------------------ Start body |
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if ($isxml) { |
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$r->print($xmlbody); |
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} else { |
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$r->print('<body bgcolor="#FFFFFF">'); |
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} |
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# ------------------------------------------------------------------ Start form |
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if ($nforms) { |
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$r->print('<form method="post" action="'. |
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$requrl.'">'); |
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} |
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# ----------------------------------------------------------------- Start table |
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$r->print('<table cols="'.$lcm.'" border="0">'); |
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for ($i=0;$i<=$#rows;$i++) { |
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if ($rows[$i]) { |
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$r->print("\n<tr>"); |
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my @colcont=split(/\&/,$rows[$i]); |
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my $avespan=$lcm/($#colcont+1); |
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for ($j=0;$j<=$#colcont;$j++) { |
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my $rid=$colcont[$j]; |
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$r->print('<td colspan="'.$avespan.'"'); |
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if ($cellemb{$rid} eq 'ssi') { |
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if ($ssibgcolor{$rid}) { |
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$r->print(' bgcolor="'. |
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$ssibgcolor{$rid}.'"'); |
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} |
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$r->print('><font'); |
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if ($ssitext{$rid}) { |
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$r->print(' text="'.$ssitext{$rid}.'"'); |
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} |
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if ($ssilink{$rid}) { |
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$r->print(' link="'.$ssilink{$rid}.'"'); |
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} |
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if ($ssitext{$rid}) { |
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$r->print(' vlink="'.$ssivlink{$rid}.'"'); |
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} |
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if ($ssialink{$rid}) { |
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$r->print(' alink="'.$ssialink{$rid}.'"'); |
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} |
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$r->print('>'.$ssibody{$rid}.'</font>'); |
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} elsif ($cellemb{$rid} eq 'img') { |
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$r->print('><img src="'. |
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$hash{'src_'.$rid}.'"></img>'); |
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} |
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$r->print('</td>'); |
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} |
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$r->print('</tr>'); |
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} |
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} |
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$r->print("\n</table>"); |
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# ---------------------------------------------------------------- Submit, etc. |
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if ($nforms) { |
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$r->print( |
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'<input name="all_submit" value="Submit All" type="'. |
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(($nforms>1)?'submit':'hidden').'"></input></form>'); |
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} |
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$r->print('</body></html>'); |
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# -------------------------------------------------------------------- End page |
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} |
# ------------------------------------------------------------- End render page |
# ------------------------------------------------------------- End render page |
} else { |
} else { |
$r->print("<h2>Page undefined.</h2>"); |
$r->content_type('text/html'); |
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$r->send_http_header; |
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$r->print('<html><body>Page undefined.</body></html>'); |
} |
} |
# ------------------------------------------------------------------ Untie hash |
# ------------------------------------------------------------------ Untie hash |
unless (untie(%hash)) { |
unless (untie(%hash)) { |