--- loncom/xml/lonxml.pm 2002/01/30 16:04:04 1.151 +++ loncom/xml/lonxml.pm 2002/12/06 19:29:02 1.219 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # XML Parser Module # -# $Id: lonxml.pm,v 1.151 2002/01/30 16:04:04 albertel Exp $ +# $Id: lonxml.pm,v 1.219 2002/12/06 19:29:02 matthew Exp $ # # Copyright Michigan State University Board of Trustees # @@ -60,15 +60,16 @@ package Apache::lonxml; use vars -qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace); +qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $prevent_entity_encode $errorcount $warningcount); use strict; -use HTML::TokeParser; -use HTML::TreeBuilder; -use Safe; -use Safe::Hole; -use Math::Cephes qw(:trigs :hypers :bessels erf erfc); -use Math::Random qw(:all); -use Opcode; +use HTML::LCParser(); +use HTML::TreeBuilder(); +use HTML::Entities(); +use Safe(); +use Safe::Hole(); +use Math::Cephes(); +use Math::Random(); +use Opcode(); sub register { my ($space,@taglist) = @_; @@ -89,20 +90,27 @@ sub deregister { } use Apache::Constants qw(:common); -use Apache::lontexconvert; -use Apache::style; -use Apache::run; -use Apache::londefdef; -use Apache::scripttag; -use Apache::edit; -use Apache::lonnet; -use Apache::File; -use Apache::loncommon; +use Apache::lontexconvert(); +use Apache::style(); +use Apache::run(); +use Apache::londefdef(); +use Apache::scripttag(); +use Apache::edit(); +use Apache::lonnet(); +use Apache::File(); +use Apache::loncommon(); +use Apache::lonfeedback(); +use Apache::lonmsg(); +use Apache::loncacc(); #================================================== Main subroutine: xmlparse #debugging control, to turn on debugging modify the correct handler $Apache::lonxml::debug=0; +# keeps count of the number of warnings and errors generated in a parse +$warningcount=0; +$errorcount=0; + #path to the directory containing the file currently being processed @pwd=(); @@ -128,9 +136,22 @@ $evaluate = 1; # stores the list of active tag namespaces @namespace=(); +# if 0 all high ASCII characters will be encoded into HTML Entities +$prevent_entity_encode=0; + # has the dynamic menu been updated to know about this resource $Apache::lonxml::registered=0; +# a pointer the the Apache request object +$Apache::lonxml::request=''; + +# a problem number counter, and check on ether it is used +$Apache::lonxml::counter=1; +$Apache::lonxml::counter_changed=0; + +#internal check on whether to look at style defs +$Apache::lonxml::usestyle=1; + sub xmlbegin { my $output=''; if ($ENV{'browser.mathml'}) { @@ -147,6 +168,7 @@ sub xmlbegin { } sub xmlend { + my ($discussiononly,$symb)=@_; my $discussion=''; if ($ENV{'request.course.id'}) { my $crs='/'.$ENV{'request.course.id'}; @@ -155,30 +177,47 @@ sub xmlend { } $crs=~s/\_/\//g; my $seeid=&Apache::lonnet::allowed('rin',$crs); - my $symb=&Apache::lonnet::symbread(); + unless ($symb) { + $symb=&Apache::lonnet::symbread(); + } if ($symb) { my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'}, $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}, $ENV{'course.'.$ENV{'request.course.id'}.'.num'}); if ($contrib{'version'}) { - $discussion.= - '

Course Discussion of Resource

'; + unless ($discussiononly) { + $discussion.= + '

'; + } my $idx; for ($idx=1;$idx<=$contrib{'version'};$idx++) { my $hidden=($contrib{'hidden'}=~/\.$idx\./); unless (($hidden) && (!$seeid)) { my $message=$contrib{$idx.':message'}; $message=~s/\n/\
/g; + $message=&Apache::lontexconvert::msgtexconverted($message); if ($message) { if ($hidden) { $message=''.$message.''; } + my $screenname=&Apache::loncommon::screenname( + $contrib{$idx.':sendername'}, + $contrib{$idx.':senderdomain'}); + my $plainname=&Apache::loncommon::nickname( + $contrib{$idx.':sendername'}, + $contrib{$idx.':senderdomain'}); + my $sender='Anonymous'; if ((!$contrib{$idx.':anonymous'}) || ($seeid)) { - $sender=$contrib{$idx.':sendername'}.' at '. - $contrib{$idx.':senderdomain'}; + $sender=&Apache::loncommon::aboutmewrapper( + $plainname, + $contrib{$idx.':sendername'}, + $contrib{$idx.':senderdomain'}).' ('. + $contrib{$idx.':sendername'}.' at '. + $contrib{$idx.':senderdomain'}.')'; if ($contrib{$idx.':anonymous'}) { - $sender.=' (anonymous)'; + $sender.=' [anonymous] '. + $screenname; } if ($seeid) { if ($hidden) { @@ -189,6 +228,10 @@ sub xmlend { $symb.':::'.$idx.'">Hide'; } } + } else { + if ($screenname) { + $sender=''.$screenname.''; + } } $discussion.='

'.$sender.' ('. localtime($contrib{$idx.':timestamp'}). @@ -197,11 +240,28 @@ sub xmlend { } } } - $discussion.='

'; + unless ($discussiononly) { + $discussion.='
'; + } + } + if ($discussiononly) { + $discussion.=(< + + + + +
+Note: in anonymous discussion, your name is visible only to +course faculty
+ + +ENDDISCUSS + $discussion.=&Apache::lonfeedback::generate_preview_button(); } } } - return $discussion.''; + return $discussion.($discussiononly?'':''); } sub tokeninputfield { @@ -314,82 +374,173 @@ sub fontsettings() { return $headerstring; } + +## +## switchmenu - modeled on lonmenu::switchmenu, but better. +## Helper function for registerurl +## +sub switchmenu { + my ($row,$col,$imgsrc,$texttop,$textbot,$action,$description)=@_; + return(<\n"; + } + if ((($ENV{'request.publicaccess'}) || + (!&Apache::lonnet::is_on_map($ENV{'REQUEST_URI'}))) && + (!$forcereg)) { + return $result. ''; } if ($Apache::lonxml::registered && !$forcereg) { return ''; } $Apache::lonxml::registered=1; + my $nothing=''; + if ($ENV{'browser.type'} eq 'explorer') { $nothing='javascript:void(0);'; } + my $newmail=''; + if (&Apache::lonmsg::newmail()) { + $newmail='menu.setstatus("you have","messages");'; + } + my $timesync='menu.syncclock(1000*'.time.');'; if (($ENV{'REQUEST_URI'}!~/^\/(res\/)*adm\//) || ($forcereg)) { my $hwkadd=''; - if ($ENV{'REQUEST_URI'}=~/\.(problem|exam|quiz|assess|survey|form)$/) { + if ($ENV{'request.filename'}=~/\.(problem|exam|quiz|assess|survey|form)$/) { if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) { $hwkadd.=(< // BEGIN LON-CAPA Internal function LONCAPAreg() { - menu=window.open("","LONCAPAmenu"); + menu=window.open("$nothing","LONCAPAmenu","",false); menu.clearTimeout(menu.menucltim); + $timesync + $newmail menu.currentURL=window.location.pathname; + menu.reloadURL=window.location.pathname; + menu.currentSymb="$ENV{'request.symb'}"; + menu.reloadSymb="$ENV{'request.symb'}"; menu.currentStale=0; menu.clearbut(3,1); menu.switchbutton (6,3,'catalog.gif','catalog','info','catalog_info()'); menu.switchbutton - (8,1,'eval.gif','evaluate','this','gopost("/adm/evaluate",currentURL)'); + (8,1,'eval.gif','evaluate','this','gopost("/adm/evaluate",currentURL)','Provide my evaluation of this resource'); menu.switchbutton - (8,2,'fdbk.gif','feedback','on this','gopost("/adm/feedback",currentURL)'); + (8,2,'fdbk.gif','feedback','discuss','gopost("/adm/feedback",currentURL)','Provide feedback messages or contribute to the course discussion about this resource'); menu.switchbutton - (8,3,'prt.gif','prepare','printout','gopost("/adm/printout",currentURL)'); + (8,3,'prt.gif','prepare','printout','gopost("/adm/printout",currentURL)','Prepare a printable document'); menu.switchbutton - (2,1,'back.gif','backward','','gopost("/adm/flip","back:"+currentURL)'); + (2,1,'back.gif','backward','','gopost("/adm/flip","back:"+currentURL)','Go to the previous resource in the course sequence'); menu.switchbutton - (2,3,'forw.gif','forward','','gopost("/adm/flip","forward:"+currentURL)'); + (2,3,'forw.gif','forward','','gopost("/adm/flip","forward:"+currentURL)','Go to the next resource in the course sequence'); menu.switchbutton - (9,1,'sbkm.gif','set','bookmark','set_bookmark()'); + (9,1,'sbkm.gif','set','bookmark','set_bookmark()','Set a bookmark for this resource'); menu.switchbutton - (9,2,'vbkm.gif','view','bookmark','edit_bookmarks()'); + (9,2,'vbkm.gif','view','bookmark','edit_bookmarks()','Use or edit my bookmark collection'); menu.switchbutton - (9,3,'anot.gif','anno-','tations','annotate()'); + (9,3,'anot.gif','anno-','tations','annotate()','Make notes and annotations about this resource'); $hwkadd + $editbutton } function LONCAPAstale() { - menu=window.open("","LONCAPAmenu"); + menu=window.open("$nothing","LONCAPAmenu","",false); menu.currentStale=1; - menu.switchbutton - (3,1,'reload.gif','return','location','go(currentURL)'); + if (menu.reloadURL!='' && menu.reloadURL!= null) { + menu.switchbutton + (3,1,'reload.gif','return','location','go(reloadURL)','Return to the last known location in the course sequence'); + } menu.clearbut(7,1); menu.clearbut(7,2); menu.clearbut(7,3); menu.menucltim=menu.setTimeout( 'clearbut(2,1);clearbut(2,3);clearbut(8,1);clearbut(8,2);clearbut(8,3);'+ - 'clearbut(9,1);clearbut(9,2);clearbut(9,3);clearbut(6,3)', + 'clearbut(9,1);clearbut(9,2);clearbut(9,3);clearbut(6,3);clearbut(6,1)', 2000); } @@ -399,13 +550,14 @@ ENDPARM ENDREGTHIS } else { - return (< // BEGIN LON-CAPA Internal function LONCAPAreg() { - menu=window.open("","LONCAPAmenu"); + menu=window.open("$nothing","LONCAPAmenu","",false); + $timesync menu.currentStale=1; menu.clearbut(2,1); menu.clearbut(2,3); @@ -426,8 +578,8 @@ ENDREGTHIS // END LON-CAPA Internal ENDDONOTREGTHIS - } + return $result; } sub loadevents() { @@ -447,9 +599,26 @@ sub printalltags { } sub xmlparse { - my ($target,$content_file_string,$safeinit,%style_for_target) = @_; + my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_; + + &setup_globals($request,$target); +# +# do we have a course style file? +# + + if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') { + my $bodytext= + $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'}; + if ($bodytext) { + my $location=&Apache::lonnet::filelocation('',$bodytext); + my $styletext=&Apache::lonnet::getfile($location); + if ($styletext ne '-1') { + %style_for_target = (%style_for_target, + &Apache::style::styleparser($target,$styletext)); + } + } + } - &setup_globals($target); #&printalltags(); my @pars = (); my $pwd=$ENV{'request.filename'}; @@ -472,6 +641,7 @@ sub xmlparse { if ($ENV{'request.uri'}) { &writeallows($ENV{'request.uri'}); } + if ($Apache::lonxml::counter_changed) { &store_counter() } return $finaloutput; } @@ -485,7 +655,7 @@ sub htmlclean { my $output= $tree->as_HTML(undef,' '); - $output=~s/\<(br|hr|img|meta|allow)([^\>\/]*)\>/\<$1$2 \/\>/gis; + $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis; $output=~s/\<\/(br|hr|img|meta|allow)\>//gis; unless ($full) { $output=~s/\<[\/]*(body|head|html)\>//gis; @@ -496,6 +666,22 @@ sub htmlclean { return $output; } +sub latex_special_symbols { + my ($current_token,$stack,$parstack)=@_; + $current_token=~s/\\ /\\char92 /g; + $current_token=~s/\^/\\char94 /g; + $current_token=~s/\~/\\char126 /g; + $current_token=~s/(&[^a-z\#])/\\$1/g; + $current_token=~s/([^&])\#/$1\\#/g; + $current_token=~s/(\$|_|{|})/\\$1/g; + $current_token=~s/\\char92 /\\texttt{\\char92}/g; + $current_token=~s/>/\$>\$/g; #more + $current_token=~s/get_token) { if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) { if ($metamode<1) { - $result=$token->[1]; + my $text=$token->[1]; + if ($token->[0] eq 'C' && $target eq 'tex') { + $text = '%'.$text."\n"; + } + $result.=$text; } } elsif ($token->[0] eq 'PI') { if ($metamode<1) { @@ -517,15 +707,12 @@ sub inner_xmlparse { # add parameters list to another stack push (@$parstack,&parstring($token)); &increasedepth($token); - if (exists $$style_for_target{$token->[1]}) { - if ($Apache::lonxml::redirection) { - $Apache::lonxml::outputstack['-1'] .= - &recurse($$style_for_target{$token->[1]},$target,$safeeval, - $style_for_target,@$parstack); - } else { - $finaloutput .= &recurse($$style_for_target{$token->[1]},$target, - $safeeval,$style_for_target,@$parstack); - } + if ($Apache::lonxml::usestyle && + exists($$style_for_target{$token->[1]})) { + $Apache::lonxml::usestyle=0; + my $string=$$style_for_target{$token->[1]}. + ''; + &Apache::lonxml::newparser($pars,\$string); } else { $result = &callsub("start_$token->[1]", $target, $token, $stack, $parstack, $pars, $safeeval, $style_for_target); @@ -538,21 +725,17 @@ sub inner_xmlparse { &Apache::lonxml::warning('Using tag </'.$token->[1].'> as end tag to <'.$$stack[-1].'>'); last; } else { - &Apache::lonxml::warning('Found tag </'.$$stack[-1].'> when looking for </'.$token->[1].'> in file'); + &Apache::lonxml::warning('Found tag </'.$token->[1].'> when looking for </'.$$stack[-1].'> in file'); &end_tag($stack,$parstack,$token); } } - if (exists($$style_for_target{'/'."$token->[1]"})) { - if ($Apache::lonxml::redirection) { - $Apache::lonxml::outputstack['-1'] .= - &recurse($$style_for_target{'/'."$token->[1]"}, - $target,$safeeval,$style_for_target,@$parstack); - } else { - $finaloutput .= &recurse($$style_for_target{'/'."$token->[1]"}, - $target,$safeeval,$style_for_target, - @$parstack); - } + if ($Apache::lonxml::usestyle && + exists($$style_for_target{'/'."$token->[1]"})) { + $Apache::lonxml::usestyle=0; + my $string=$$style_for_target{'/'.$token->[1]}. + ''; + &Apache::lonxml::newparser($pars,\$string); } else { $result = &callsub("end_$token->[1]", $target, $token, $stack, $parstack, $pars,$safeeval, $style_for_target); @@ -563,108 +746,49 @@ sub inner_xmlparse { #evaluate variable refs in result if ($result ne "") { if ( $#$parstack > -1 ) { - if ($Apache::lonxml::redirection) { - $Apache::lonxml::outputstack['-1'] .= - &Apache::run::evaluate($result,$safeeval,$$parstack['-1']); - } else { - $finaloutput .= &Apache::run::evaluate($result,$safeeval, - $$parstack['-1']); - } + $result=&Apache::run::evaluate($result,$safeeval,$$parstack[-1]); } else { - $finaloutput .= &Apache::run::evaluate($result,$safeeval,''); + $result= &Apache::run::evaluate($result,$safeeval,''); } - $result = ''; - } + } + if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) { + if ($target eq 'tex') { + $result=&latex_special_symbols($result,$stack,$parstack); + } + } + + # Encode any high ASCII characters + if (!$Apache::lonxml::prevent_entity_encode) { + $result=&HTML::Entities::encode($result,"\200-\377"); + } + if ($Apache::lonxml::redirection) { + $Apache::lonxml::outputstack['-1'] .= $result; + } else { + $finaloutput.=$result; + } + $result = ''; + if ($token->[0] eq 'E') { &end_tag($stack,$parstack,$token); } } - pop @$pars; - pop @Apache::lonxml::pwd; + if ($#$pars > -1) { + pop @$pars; + pop @Apache::lonxml::pwd; + } } # if ($target eq 'meta') { # $finaloutput.=&endredirection; # } + if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) { $finaloutput=&afterburn($finaloutput); - } + } return $finaloutput; } -sub recurse { - my @innerstack = (); - my @innerparstack = (); - my ($newarg,$target,$safeeval,$style_for_target,@parstack) = @_; - my @pat = (); - &newparser(\@pat,\$newarg); - my $tokenpat; - my $partstring = ''; - my $output=''; - my $decls=''; - &Apache::lonxml::debug("Recursing"); - while ( $#pat > -1 ) { - while ($tokenpat = $pat[$#pat]->get_token) { - if (($tokenpat->[0] eq 'T') || ($tokenpat->[0] eq 'C') || ($tokenpat->[0] eq 'D') ) { - if ($metamode<1) { $partstring=$tokenpat->[1]; } - } elsif ($tokenpat->[0] eq 'PI') { - if ($metamode<1) { $partstring=$tokenpat->[2]; } - } elsif ($tokenpat->[0] eq 'S') { - push (@innerstack,$tokenpat->[1]); - push (@innerparstack,&parstring($tokenpat)); - &increasedepth($tokenpat); - $partstring = &callsub("start_$tokenpat->[1]", $target, $tokenpat, - \@innerstack, \@innerparstack, \@pat, - $safeeval, $style_for_target); - } elsif ($tokenpat->[0] eq 'E') { - #clear out any tags that didn't end - while ($tokenpat->[1] ne $innerstack[$#innerstack] - && ($#innerstack > -1)) { - my $lasttag=$innerstack[-1]; - if ($tokenpat->[1] =~ /^$lasttag$/i) { - &Apache::lonxml::warning('Using tag </'.$tokenpat->[1].'> as end tag to <'.$innerstack[-1].'>'); - last; - } else { - &Apache::lonxml::warning('Found tag </'.$innerstack[-1].'> when looking for </'.$tokenpat->[1].'> in file'); - &end_tag(\@innerstack,\@innerparstack,$tokenpat); - } - } - $partstring = &callsub("end_$tokenpat->[1]", $target, $tokenpat, - \@innerstack, \@innerparstack, \@pat, - $safeeval, $style_for_target); - } else { - &Apache::lonxml::error("Unknown token event :$tokenpat->[0]:$tokenpat->[1]:"); - } - #pass both the variable to the style tag, and the tag we - #are processing inside the - if ( $partstring ne "" ) { - if ( $#parstack > -1 ) { - if ( $#innerparstack > -1 ) { - $decls= $parstack[$#parstack].$innerparstack[$#innerparstack]; - } else { - $decls= $parstack[$#parstack]; - } - } else { - if ( $#innerparstack > -1 ) { - $decls=$innerparstack[$#innerparstack]; - } else { - $decls=''; - } - } - $output .= &Apache::run::evaluate($partstring,$safeeval,$decls); - $partstring = ''; - } - if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack; - &decreasedepth($tokenpat);} - } - pop @pat; - pop @Apache::lonxml::pwd; - } - &Apache::lonxml::debug("Exiting Recursing"); - return $output; -} - sub callsub { my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $currentstring=''; @@ -689,13 +813,13 @@ sub callsub { } if (!$deleted) { if ($space) { - #&Apache::lonxml::debug("Calling sub $sub in $space $metamode
\n"); + &Apache::lonxml::debug("Calling sub $sub in $space $metamode"); $sub1="$space\:\:$sub"; ($currentstring,$nodefault) = &$sub1($target,$token,$tagstack, $parstack,$parser,$safeeval, $style); } else { - #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode
\n"); + &Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode"); if ($metamode <1) { if (defined($token->[4]) && ($metamode < 1)) { $currentstring = $token->[4]; @@ -717,6 +841,9 @@ sub callsub { if ($token->[0] eq 'S') { $currentstring = $token->[4]; $currentstring.=&Apache::edit::handle_insert(); + } elsif ($token->[0] eq 'E') { + $currentstring = $token->[2]; + $currentstring.=&Apache::edit::handle_insertafter($token->[1]); } else { $currentstring = $token->[2]; } @@ -729,8 +856,14 @@ sub callsub { } sub setup_globals { - my ($target)=@_; + my ($request,$target)=@_; + $Apache::lonxml::request=$request; $Apache::lonxml::registered = 0; + $errorcount=0; + $warningcount=0; + $Apache::lonxml::default_homework_loaded=0; + $Apache::lonxml::usestyle=1; + &init_counter(); @Apache::lonxml::pwd=(); @Apache::lonxml::extlinks=(); if ($target eq 'meta') { @@ -758,6 +891,11 @@ sub setup_globals { $Apache::lonxml::metamode = 0; $Apache::lonxml::evaluate = 0; $Apache::lonxml::import = 0; + } elsif ($target eq 'analyze') { + $Apache::lonxml::redirection = 0; + $Apache::lonxml::metamode = 0; + $Apache::lonxml::evaluate = 1; + $Apache::lonxml::import = 1; } else { $Apache::lonxml::redirection = 0; $Apache::lonxml::metamode = 0; @@ -794,6 +932,37 @@ sub init_safespace { $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1'); $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn'); $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv'); + + $safehole->wrap(\&Math::Cephes::bdtr ,$safeeval,'&bdtr' ); + $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' ); + $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' ); + $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' ); + $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' ); + $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc'); + $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri'); + $safehole->wrap(\&Math::Cephes::fdtr ,$safeeval,'&fdtr' ); + $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' ); + $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' ); + $safehole->wrap(\&Math::Cephes::gdtr ,$safeeval,'&gdtr' ); + $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' ); + $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' ); + $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc'); + $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri'); + $safehole->wrap(\&Math::Cephes::ndtr ,$safeeval,'&ndtr' ); + $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' ); + $safehole->wrap(\&Math::Cephes::pdtr ,$safeeval,'&pdtr' ); + $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' ); + $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' ); + $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' ); + $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri'); + +# $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract'); +# $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd'); +# $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub'); +# $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul'); +# $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv'); +# $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid'); + $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta'); $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square'); $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential'); @@ -826,6 +995,18 @@ sub init_safespace { &Apache::run::run($safeinit,$safeeval); } +sub default_homework_load { + my ($safeeval)=@_; + &Apache::lonxml::debug('Loading default_homework'); + my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm'); + if ($default == -1) { + &Apache::lonxml::error("Unable to find default_homework.lcpm"); + } else { + &Apache::run::run($default,$safeeval); + $Apache::lonxml::default_homework_loaded=1; + } +} + sub startredirection { $Apache::lonxml::redirection++; push (@Apache::lonxml::outputstack, ''); @@ -881,57 +1062,124 @@ sub decreasedepth { #print "
e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"; } -sub get_all_text { +sub get_all_text_unbalanced { +#there is a copy of this in lonpublisher.pm + my($tag,$pars)= @_; + my $token; + my $result=''; + $tag='<'.$tag.'>'; + while ($token = $$pars[-1]->get_token) { + if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { + $result.=$token->[1]; + } elsif ($token->[0] eq 'PI') { + $result.=$token->[2]; + } elsif ($token->[0] eq 'S') { + $result.=$token->[4]; + } elsif ($token->[0] eq 'E') { + $result.=$token->[2]; + } + if ($result =~ /(.*)\Q$tag\E(.*)/s) { + &Apache::lonxml::debug('Got a winner with leftovers ::'.$2); + &Apache::lonxml::debug('Result is :'.$1); + $result=$1; + my $redo=$tag.$2; + &Apache::lonxml::newparser($pars,\$redo); + last; + } + } + return $result +} +sub increment_counter { + $Apache::lonxml::counter++; + $Apache::lonxml::counter_changed=1; +} + +sub init_counter { + if (defined($ENV{'form.counter'})) { + $Apache::lonxml::counter=$ENV{'form.counter'}; + } elsif (not defined($Apache::lonxml::counter)) { + $Apache::lonxml::counter=1; + &store_counter(); + } + $Apache::lonxml::counter_changed=0; +} + +sub store_counter { + &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter)); + return ''; +} + +sub get_all_text { my($tag,$pars)= @_; + &Apache::lonxml::debug("Got a ".ref($pars)); + if (ref($pars) ne 'ARRAY') { + $pars=[$pars]; + } my $depth=0; my $token; my $result=''; if ( $tag =~ m:^/: ) { my $tag=substr($tag,1); -# &Apache::lonxml::debug("have:$tag:"); - while (($depth >=0) && ($token = $pars->get_token)) { -# &Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]"); - if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { - $result.=$token->[1]; - } elsif ($token->[0] eq 'PI') { - $result.=$token->[2]; - } elsif ($token->[0] eq 'S') { - if ($token->[1] =~ /^$tag$/i) { $depth++; } - $result.=$token->[4]; - } elsif ($token->[0] eq 'E') { - if ( $token->[1] =~ /^$tag$/i) { $depth--; } - #skip sending back the last end tag - if ($depth > -1) { $result.=$token->[2]; } else { - $pars->unget_token($token); + #&Apache::lonxml::debug("have:$tag:"); + while (($depth >=0) && ($#$pars > -1)) { + while (($depth >=0) && ($token = $$pars[-1]->get_token)) { + #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd); + if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { + $result.=$token->[1]; + } elsif ($token->[0] eq 'PI') { + $result.=$token->[2]; + } elsif ($token->[0] eq 'S') { + if ($token->[1] =~ /^$tag$/i) { $depth++; } + $result.=$token->[4]; + } elsif ($token->[0] eq 'E') { + if ( $token->[1] =~ /^$tag$/i) { $depth--; } + #skip sending back the last end tag + if ($depth > -1) { $result.=$token->[2]; } else { + $$pars[-1]->unget_token($token); + } } } + if (($depth >=0) && ($#$pars > 0) ) { + pop(@$pars); + pop(@Apache::lonxml::pwd); + } } } else { - while ($token = $pars->get_token) { -# &Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]"); - if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { - $result.=$token->[1]; - } elsif ($token->[0] eq 'PI') { - $result.=$token->[2]; - } elsif ($token->[0] eq 'S') { - if ( $token->[1] =~ /^$tag$/i) { - $pars->unget_token($token); last; - } else { - $result.=$token->[4]; - } - } elsif ($token->[0] eq 'E') { - $result.=$token->[2]; + while ($#$pars > -1) { + while ($token = $$pars[-1]->get_token) { + #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]"); + if (($token->[0] eq 'T')||($token->[0] eq 'C')|| + ($token->[0] eq 'D')) { + $result.=$token->[1]; + } elsif ($token->[0] eq 'PI') { + $result.=$token->[2]; + } elsif ($token->[0] eq 'S') { + if ( $token->[1] =~ /^$tag$/i) { + $$pars[-1]->unget_token($token); last; + } else { + $result.=$token->[4]; + } + } elsif ($token->[0] eq 'E') { + $result.=$token->[2]; + } + } + if (($#$pars > 0) ) { + pop(@$pars); + pop(@Apache::lonxml::pwd); + } else { last; } } - } } -# &Apache::lonxml::debug("Exit:$result:"); + if ($result =~ m||) { + $Apache::lonxml::usestyle=1; + } + #&Apache::lonxml::debug("Exit:$result:"); return $result } sub newparser { my ($parser,$contentref,$dir) = @_; - push (@$parser,HTML::TokeParser->new($contentref)); + push (@$parser,HTML::LCParser->new($contentref)); $$parser['-1']->xml_mode('1'); if ( $dir eq '' ) { push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]); @@ -978,16 +1226,8 @@ sub writeallows { # sub afterburn { my $result=shift; - foreach (split(/&/,$ENV{'QUERY_STRING'})) { - my ($name, $value) = split(/=/,$_); - $value =~ tr/+/ /; - $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; - if (($name eq 'highlight')||($name eq 'anchor')||($name eq 'link')) { - unless ($ENV{'form.'.$name}) { - $ENV{'form.'.$name}=$value; - } - } - } + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['highlight','anchor','link']); if ($ENV{'form.highlight'}) { foreach (split(/\,/,$ENV{'form.highlight'})) { my $anchorname=$_; @@ -1049,19 +1289,23 @@ SIMPLECONTENT sub inserteditinfo { my ($result,$filecontents)=@_; - $filecontents =~ s::</textarea>:ig; + $filecontents = &HTML::Entities::encode($filecontents); # my $editheader='Edit below
'; + my $buttons=(< + + +BUTTONS my $editfooter=(<
+ +$buttons
+
$buttons
- - - -
ENDFOOTER # $result=~s/(\]*\>)/$1$editheader/is; @@ -1069,10 +1313,37 @@ ENDFOOTER return $result; } +sub get_target { + my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); + if ( $ENV{'request.state'} eq 'published') { + if ( defined($ENV{'form.grade_target'}) + && ($viewgrades == 'F' )) { + return ($ENV{'form.grade_target'}); + } elsif (defined($ENV{'form.grade_target'})) { + if (($ENV{'form.grade_target'} eq 'web') || + ($ENV{'form.grade_target'} eq 'tex') ) { + return $ENV{'form.grade_target'} + } else { + return 'web'; + } + } else { + return 'web'; + } + } elsif ($ENV{'request.state'} eq 'construct') { + if ( defined($ENV{'form.grade_target'})) { + return ($ENV{'form.grade_target'}); + } else { + return 'web'; + } + } else { + return 'web'; + } +} + sub handler { my $request=shift; - my $target='web'; + my $target=&get_target(); $Apache::lonxml::debug=0; @@ -1113,7 +1384,7 @@ ENDNOTFOUND $filecontents=''; if ($ENV{'request.state'} ne 'published') { $filecontents=&createnewhtml(); - $ENV{'form.showmode'}='Edit'; #force edit mode + $ENV{'form.editmode'}='Edit'; #force edit mode } } else { unless ($ENV{'request.state'} eq 'published') { @@ -1121,8 +1392,9 @@ ENDNOTFOUND $filecontents=&htmlclean($filecontents,1); } } - if ($ENV{'form.showmode'} ne 'Edit') { - $result = &Apache::lonxml::xmlparse($target,$filecontents,'',%mystyle); + if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) { + $result = &Apache::lonxml::xmlparse($request,$target,$filecontents, + '',%mystyle); } } @@ -1130,8 +1402,11 @@ ENDNOTFOUND # Edit action? Insert editing commands # unless ($ENV{'request.state'} eq 'published') { - if ($ENV{'form.showmode'} eq 'Edit') { - $result=''; + if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) { + my $displayfile=$request->uri; + $displayfile=~s/^\/[^\/]*//; + $result='

'.$displayfile. + '

'; $result=&inserteditinfo($result,$filecontents); } } @@ -1146,23 +1421,25 @@ ENDNOTFOUND sub debug { if ($Apache::lonxml::debug eq 1) { $|=1; - print("DEBUG:".join('
',@_)."
\n"); + print('DEBUG:'.&HTML::Entities::encode($_[0])."\n"); } } sub error { + $errorcount++; if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) { - print "ERROR:".join('
',@_)."
\n"; + # If printing in construction space, put the error inside

+    print "ERROR:".join("\n",@_)."\n";
   } else {
     print "An Error occured while processing this resource. The instructor has been notified. 
"; #notify author &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('
',@_)); #notify course if ( $ENV{'request.course.id'} ) { - my $users=$ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'}; + my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1); my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'}); - foreach my $user (split /\,/, $users) { - ($user,my $domain) = split /:/, $user; + foreach (keys %users) { + my ($user,$domain) = split(/:/, $_); &Apache::lonmsg::user_normal_msg($user,$domain, "Error [$declutter]",join('
',@_)); } @@ -1175,29 +1452,45 @@ sub error { } sub warning { + $warningcount++; if ($ENV{'request.state'} eq 'construct') { print "WARNING:".join('
',@_)."
\n"; } } sub get_param { - my ($param,$parstack,$safeeval,$context) = @_; - if ( ! $context ) { $context = -1; } - my $args =''; - if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } - if ( $args =~ /my \$$param=\"/ ) { - return &Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #' - } else { - return undef; - } + my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_; + if ( ! $context ) { $context = -1; } + my $args =''; + if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } + if ( ! $args ) { return undef; } + if ( $case_insensitive ) { + if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) { + return &Apache::run::run("{$args;".'return $'.$param.'}', + $safeeval); #' + } else { + return undef; + } + } else { + if ( $args =~ /my \$\Q$param\E=\"/ ) { + return &Apache::run::run("{$args;".'return $'.$param.'}', + $safeeval); #' + } else { + return undef; + } + } } sub get_param_var { - my ($param,$parstack,$safeeval,$context) = @_; + my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_; if ( ! $context ) { $context = -1; } my $args =''; if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; } - if ( $args !~ /my \$$param=\"/ ) { return undef; } + if ($case_insensitive) { + if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) { + return undef; + } + } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; } my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #' if ($value =~ /^[\$\@\%]/) { return &Apache::run::run("return $value",$safeeval,1);