version 1.2, 2000/10/05 22:14:11
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version 1.3, 2000/10/07 22:30:30
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Line 10
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Line 10
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# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23, |
# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23, |
# 10/02 Gerd Kortemeyer) |
# 10/02 Gerd Kortemeyer) |
# |
# |
# 10/03,10/05 Gerd Kortemeyer |
# 10/03,10/05,10/06,10/07 Gerd Kortemeyer |
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package Apache::lonpageflip; |
package Apache::lonpageflip; |
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Line 20 use Apache::lonnet();
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Line 20 use Apache::lonnet();
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use HTML::TokeParser; |
use HTML::TokeParser; |
use GDBM_File; |
use GDBM_File; |
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# -------------------------------------------------------------- Module Globals |
# ========================================================== Module Global Hash |
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my %hash; |
my %hash; |
my @rows; |
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# ------------------------------------------------------------------ Euclid gcd |
sub addrid { |
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my ($current,$new)=@_; |
sub euclid { |
if (&Apache::lonnet::allowed('bre',$hash{'src_'.$new})) { |
my ($e,$f)=@_; |
if ($current) { |
my $a; my $b; my $r; |
$current.=','.$new; |
if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; } |
} else { |
while ($r!=0) { |
$current=''.$new; |
$a=$b; $b=$r; |
} |
$r=$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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} |
} |
return $further; |
return $current; |
} |
} |
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# ================================================================ Main Handler |
# ================================================================ Main Handler |
Line 109 sub handler {
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Line 57 sub handler {
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$r->print('<html><body>'); |
$r->print('<html><body>'); |
# --------END DEBUG ONLY TRASH |
# --------END DEBUG ONLY TRASH |
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my %cachehash=(); |
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my $redir=0; |
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if (($ENV{'form.postdata'})&&($ENV{'request.course.fn'})) { |
if (($ENV{'form.postdata'})&&($ENV{'request.course.fn'})) { |
$ENV{'form.postdata'}=~/(\w+)\:(.*)/; |
$ENV{'form.postdata'}=~/(\w+)\:(.*)/; |
Line 117 sub handler {
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Line 67 sub handler {
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my $redirecturl=$currenturl; |
my $redirecturl=$currenturl; |
$currenturl=~s/^http\:\/\///; |
$currenturl=~s/^http\:\/\///; |
$currenturl=~s/^[^\/]+//; |
$currenturl=~s/^[^\/]+//; |
$currenturl=Apache::lonnet::declutter($currenturl); |
# ------------------------------------------- Do we have any idea where we are? |
# ---------------------------------------------------------------- Tie database |
my $position; |
if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'.db', |
if ($position=Apache::lonnet::symbread($currenturl)) { |
&GDBM_READER,0640)) { |
# ------------------------------------------------------------------------- Yes |
# ---------------------------------------------- Get ID(s) for current resource |
my ($mapurl,$mapnum,$thisurl)=split(/\_\_\_/,$position); |
my $syval=$hash{'ids_/res/'.$currenturl}; |
$cachehash{$thisurl}=$mapnum; |
if ($syval) { |
if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'.db', |
# ------------------------------------------------------------------- Has ID(s) |
&GDBM_READER,0640)) { |
my @possiblities=split(/\,/,$syval); |
my $rid=$hash{'map_pc_/res/'.$mapurl}.'.'.$mapnum; |
$r->print($direction.' '.$currenturl.' '.$syval); |
my $next=''; |
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if ($direction eq 'forward') { |
} else { |
map { |
# --------------------------------------------------------- Does not have ID(s) |
$next=&addrid($next,$hash{'goesto_'.$_}); |
$r->print('Weird'); |
} split(/\,/,$hash{'to_'.$rid}); |
} |
my @possibilities=split(/,/,$next); |
# ------------------------------------- Program needs to get here to untie hash |
if ($#possibilities==1) { |
unless(untie(%hash)) { |
my $goto=$possibilities[0]; |
$r->log_reason('Could not untie database hash '. |
} |
$ENV{'request.course.fn'}.' for '.$ENV{'user.name'}. |
} elsif ($direction eq 'back') { |
' at '.$ENV{'user.domain'}); |
} elsif ($direction eq 'up') { |
return HTTP_SERVICE_UNAVAILABLE; |
} elsif ($direction eq 'down') { |
} |
} |
# ------------------------------------------------------------ Now do something |
untie(%hash); |
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$r->print($rid.' - '.$next); |
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} |
} else { |
} else { |
# ----------------------------------------- Serious problem, could not tie hash |
# -------------------------------------------------------------------------- No |
$r->log_reason('Could not tie database hash '. |
$r->print('No idea '.$currenturl); |
$ENV{'request.course.fn'}.' for '.$ENV{'user.name'}. |
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' at '.$ENV{'user.domain'}); |
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return HTTP_SERVICE_UNAVAILABLE; |
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} |
} |
# -------------------------- Class was not initialized or page fliped strangely |
# -------------------------- Class was not initialized or page fliped strangely |
} else { |
} else { |
Line 165 sub handler {
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Line 114 sub handler {
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# ========================================================= TOTAL TRASH |
# ========================================================= TOTAL TRASH |
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my $requrl=$r->uri; |
# &Apache::lonnet::symblist($requrl,%symbhash); |
# ----------------------------------------------------------------- Tie db file |
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if ($ENV{'request.course.fn'}) { |
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my $fn=$ENV{'request.course.fn'}; |
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if (-e "$fn.db") { |
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if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) { |
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# ------------------------------------------------------------------- Hash tied |
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my $firstres=$hash{'map_start_'.$requrl}; |
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my $lastres=$hash{'map_finish_'.$requrl}; |
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if (($firstres) && ($lastres)) { |
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# ----------------------------------------------------------------- Render page |
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@rows=(); |
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&tracetable(0,$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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} |
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# ------------------------------------------------------------- End render page |
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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><body>Page undefined.</body></html>'); |
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} |
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# ------------------------------------------------------------------ Untie hash |
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unless (untie(%hash)) { |
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&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
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"Could not untie coursemap $fn (browse).</font>"); |
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} |
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# -------------------------------------------------------------------- All done |
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return OK; |
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# ----------------------------------------------- Errors, hash could no be tied |
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} |
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} |
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} |
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$ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
} |
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1; |
1; |