--- loncom/xml/lonxml.pm 2003/02/03 18:03:53 1.227 +++ loncom/xml/lonxml.pm 2011/12/06 16:30:19 1.526 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # XML Parser Module # -# $Id: lonxml.pm,v 1.227 2003/02/03 18:03:53 harris41 Exp $ +# $Id: lonxml.pm,v 1.526 2011/12/06 16:30:19 dseaton Exp $ # # Copyright Michigan State University Board of Trustees # @@ -36,31 +36,32 @@ # The C source of the Code may not be distributed by the Licensee # to any other parties under any circumstances. # -# last modified 06/26/00 by Alexander Sakharuk -# 11/6 Gerd Kortemeyer -# 6/1/1 Gerd Kortemeyer -# 2/21,3/13 Guy -# 3/29,5/4 Gerd Kortemeyer -# 5/26 Gerd Kortemeyer -# 5/27 H. K. Ng -# 6/2,6/3,6/8,6/9 Gerd Kortemeyer -# 6/12,6/13 H. K. Ng -# 6/16 Gerd Kortemeyer -# 7/27 H. K. Ng -# 8/7,8/9,8/10,8/11,8/15,8/16,8/17,8/18,8/20,8/23,8/24 Gerd Kortemeyer -# Guy Albertelli -# 9/26 Gerd Kortemeyer -# Dec Guy Albertelli -# YEAR=2002 -# 1/1 Gerd Kortemeyer -# 1/2 Matthew Hall -# 1/3 Gerd Kortemeyer -# + +=pod + +=head1 NAME + +Apache::lonxml + +=head1 SYNOPSIS + +XML Parsing Module + +This is part of the LearningOnline Network with CAPA project +described at http://www.lon-capa.org. + + +=head1 SUBROUTINES + +=cut + + package Apache::lonxml; use vars -qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $prevent_entity_encode $errorcount $warningcount); +qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount); use strict; +use LONCAPA; use HTML::LCParser(); use HTML::TreeBuilder(); use HTML::Entities(); @@ -69,6 +70,9 @@ use Safe::Hole(); use Math::Cephes(); use Math::Random(); use Opcode(); +use POSIX qw(strftime); +use Time::HiRes qw( gettimeofday tv_interval ); +use Symbol(); sub register { my ($space,@taglist) = @_; @@ -94,16 +98,26 @@ use Apache::style(); use Apache::run(); use Apache::londefdef(); use Apache::scripttag(); +use Apache::languagetags(); use Apache::edit(); -use Apache::lonnet(); +use Apache::inputtags(); +use Apache::outputtags(); +use Apache::lonnet; use Apache::File(); use Apache::loncommon(); use Apache::lonfeedback(); use Apache::lonmsg(); use Apache::loncacc(); +use Apache::lonmaxima(); +use Apache::lonr(); +use Apache::lonlocal; +use Apache::lonhtmlcommon(); +use Apache::functionplotresponse(); + +#==================================== Main subroutine: xmlparse -#================================================== 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 @@ -135,11 +149,8 @@ $evaluate = 1; # stores the list of active tag namespaces @namespace=(); -# if 0 all high ASCII characters will be encoded into HTML Entities -$prevent_entity_encode=0; - -# has the dynamic menu been updated to know about this resource -$Apache::lonxml::registered=0; +# stores all Scrit Vars displays for later showing +my @script_var_displays=(); # a pointer the the Apache request object $Apache::lonxml::request=''; @@ -148,447 +159,68 @@ $Apache::lonxml::request=''; $Apache::lonxml::counter=1; $Apache::lonxml::counter_changed=0; -#internal check on whether to look at style defs -$Apache::lonxml::usestyle=1; +# Part counter hash. In analysis mode, the +# problems can use this to record which parts increment the counter +# by how much. The counter subs will maintain this hash via +# their optional part parameters. Note that the assumption is that +# analysis is done in one request and therefore it is not necessary to +# save this information request-to-request. -sub xmlbegin { - my $output=''; - if ($ENV{'browser.mathml'}) { - $output='' - .'' - .']>' - .''; - } else { - $output=''; - } - return $output; -} -sub xmlend { - my ($discussiononly,$symb)=@_; - my $discussion=''; - if ($ENV{'request.course.id'}) { - my $crs='/'.$ENV{'request.course.id'}; - if ($ENV{'request.course.sec'}) { - $crs.='_'.$ENV{'request.course.sec'}; - } - $crs=~s/\_/\//g; - my $seeid=&Apache::lonnet::allowed('rin',$crs); - 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 ($contrib{'version'}) { - unless ($discussiononly) { - $discussion.= - '
'; - } - my $idx; - for ($idx=1;$idx<=$contrib{'version'};$idx++) { - my $hidden=($contrib{'hidden'}=~/\.$idx\./); - my $deleted=($contrib{'deleted'}=~/\.$idx\./); - unless ((($hidden) && (!$seeid)) || ($deleted)) { - 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=&Apache::loncommon::aboutmewrapper( - $plainname, - $contrib{$idx.':sendername'}, - $contrib{$idx.':senderdomain'}).' ('. - $contrib{$idx.':sendername'}.' at '. - $contrib{$idx.':senderdomain'}.')'; - if ($contrib{$idx.':anonymous'}) { - $sender.=' [anonymous] '. - $screenname; - } - if ($seeid) { - if ($hidden) { - $sender.=' Make Visible'; - } else { - $sender.=' Hide'; - } - $sender.=' Delete'; - } - } else { - if ($screenname) { - $sender=''.$screenname.''; - } - } - $discussion.='

'.$sender.' ('. - localtime($contrib{$idx.':timestamp'}). - '):

'.$message. - '

'; - } - } - } - 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 $discussion.($discussiononly?'':''); -} +%Apache::lonxml::counters_per_part = (); -sub tokeninputfield { - my $defhost=$Apache::lonnet::perlvar{'lonHostID'}; - $defhost=~tr/a-z/A-Z/; - return (< - function updatetoken() { - var comp=new Array; - var barcode=unescape(document.tokeninput.barcode.value); - comp=barcode.split('*'); - if (typeof(comp[0])!="undefined") { - document.tokeninput.codeone.value=comp[0]; - } - if (typeof(comp[1])!="undefined") { - document.tokeninput.codetwo.value=comp[1]; - } - if (typeof(comp[2])!="undefined") { - comp[2]=comp[2].toUpperCase(); - document.tokeninput.codethree.value=comp[2]; - } - document.tokeninput.barcode.value=''; - } - -
- - - - -
DocID Checkin
- - - - - - - -
Scan in Barcode
or Type in DocID - -* - -* - -
-
-
-ENDINPUTFIELD -} - -sub maketoken { - my ($symb,$tuname,$tudom,$tcrsid)=@_; - unless ($symb) { - $symb=&Apache::lonnet::symbread(); - } - unless ($tuname) { - $tuname=$ENV{'user.name'}; - $tudom=$ENV{'user.domain'}; - $tcrsid=$ENV{'request.course.id'}; - } - - return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid); -} - -sub printtokenheader { - my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_; - unless ($token) { return ''; } - - my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); - unless ($tsymb) { - $tsymb=$symb; - } - unless ($tuname) { - $tuname=$name; - $tudom=$domain; - $tcrsid=$courseid; - } - - my %reply=&Apache::lonnet::get('environment', - ['firstname','middlename','lastname','generation'], - $tudom,$tuname); - my $plainname=$reply{'firstname'}.' '. - $reply{'middlename'}.' '. - $reply{'lastname'}.' '. - $reply{'generation'}; - - if ($target eq 'web') { - my %idhash=&Apache::lonnet::idrget($tudom,($tuname)); - return - ''. - 'Checked out for '.$plainname. - '
User: '.$tuname.' at '.$tudom. - '
ID: '.$idhash{$tuname}. - '
CourseID: '.$tcrsid. - '
Course: '.$ENV{'course.'.$tcrsid.'.description'}. - '
DocID: '.$token. - '
Time: '.localtime().'
'; - } else { - return $token; - } -} - -sub fontsettings() { - my $headerstring=''; - if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) { - $headerstring.= - ''; - } - return $headerstring; -} +#internal check on whether to look at style defs +$Apache::lonxml::usestyle=1; +#locations used to store the parameter string for style substitutions +$Apache::lonxml::style_values=''; +$Apache::lonxml::style_end_values=''; -## -## switchmenu - modeled on lonmenu::switchmenu, but better. -## Helper function for registerurl -## -sub switchmenu { - my ($row,$col,$imgsrc,$texttop,$textbot,$action,$description)=@_; - return(<\n". - "if (typeof menu != 'undefined') {menu.currentURL=null;}\n". - &Apache::loncommon::browser_and_searcher_javascript(). - "\n\n"; - } - if ((($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 $reopen=&Apache::lonmenu::reopenmenu(); - 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.filename'}=~/\.(problem|exam|quiz|assess|survey|form)$/) { - if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) { - $hwkadd.=(< -// BEGIN LON-CAPA Internal - - function LONCAPAreg() { - menu=$reopen; - 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()','Show catalog information'); - menu.switchbutton - (8,1,'eval.gif','evaluate','this','gopost("/adm/evaluate",currentURL)','Provide my evaluation of this resource'); - menu.switchbutton - (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)','Prepare a printable document'); - menu.switchbutton - (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)','Go to the next resource in the course sequence'); - menu.switchbutton - (9,1,'sbkm.gif','set','bookmark','set_bookmark()','Set a bookmark for this resource'); - menu.switchbutton - (9,2,'vbkm.gif','view','bookmark','edit_bookmarks()','Use or edit my bookmark collection'); - menu.switchbutton - (9,3,'anot.gif','anno-','tations','annotate()','Make notes and annotations about this resource'); - $hwkadd - $editbutton - } - - function LONCAPAstale() { - menu=$reopen - menu.currentStale=1; - 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(6,1)', - 2000); +#array of ssi calls that need to occur after we are done parsing +@Apache::lonxml::ssi_info=(); - } +#should we do the postag variable interpolation +$Apache::lonxml::post_evaluate=1; -// END LON-CAPA Internal - -ENDREGTHIS +#a header message to emit in the case of any generated warning or errors +$Apache::lonxml::warnings_error_header=''; - } else { - $result = (< -// BEGIN LON-CAPA Internal +$Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on. - function LONCAPAreg() { - menu=$reopen - $timesync - menu.currentStale=1; - menu.clearbut(2,1); - menu.clearbut(2,3); - menu.clearbut(8,1); - menu.clearbut(8,2); - menu.clearbut(8,3); - if (menu.currentURL) { - menu.switchbutton - (3,1,'reload.gif','return','location','go(currentURL)'); - } else { - menu.clearbut(3,1); - } - } +sub enable_LaTeX_substitutions { + $Apache::lonxml::substitute_LaTeX_symbols = 1; +} +sub disable_LaTeX_substitutions { + $Apache::lonxml::substitute_LaTeX_symbols = 0; +} - function LONCAPAstale() { +sub xmlend { + my ($target,$parser)=@_; + my $mode='xml'; + my $status='OPEN'; + if ($Apache::lonhomework::parsing_a_problem || + $Apache::lonhomework::parsing_a_task ) { + $mode='problem'; + $status=$Apache::inputtags::status[-1]; } - -// END LON-CAPA Internal - -ENDDONOTREGTHIS + my $discussion; + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['LONCAPA_INTERNAL_no_discussion']); + if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) || + $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') { + $discussion=&Apache::lonfeedback::list_discussion($mode,$status); + } + if ($target eq 'tex') { + $discussion.='\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}'; + &Apache::lonxml::newparser($parser,\$discussion,''); + return ''; } - return $result; -} - -sub loadevents() { - return 'LONCAPAreg();'; -} -sub unloadevents() { - return 'LONCAPAstale();'; + return $discussion; } sub printalltags { @@ -603,26 +235,41 @@ sub xmlparse { my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_; &setup_globals($request,$target); + &Apache::inputtags::initialize_inputtags(); + &Apache::bridgetask::initialize_bridgetask(); + &Apache::outputtags::initialize_outputtags(); + &Apache::edit::initialize_edit(); + &Apache::londefdef::initialize_londefdef(); + # # do we have a course style file? # - if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') { + if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') { my $bodytext= - $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'}; + $env{'course.'.$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)); - } - } + foreach my $file (split(',',$bodytext)) { + my $location=&Apache::lonnet::filelocation('',$file); + my $styletext=&Apache::lonnet::getfile($location); + if ($styletext ne '-1') { + %style_for_target = (%style_for_target, + &Apache::style::styleparser($target,$styletext)); + } + } + } + } elsif ($env{'construct.style'} + && ($env{'request.state'} eq 'construct')) { + my $location=&Apache::lonnet::filelocation('',$env{'construct.style'}); + my $styletext=&Apache::lonnet::getfile($location); + if ($styletext ne '-1') { + %style_for_target = (%style_for_target, + &Apache::style::styleparser($target,$styletext)); + } } - - #&printalltags(); +#&printalltags(); my @pars = (); - my $pwd=$ENV{'request.filename'}; + my $pwd=$env{'request.filename'}; $pwd =~ s:/[^/]*$::; &newparser(\@pars,\$content_file_string,$pwd); @@ -635,71 +282,102 @@ sub xmlparse { my @stack = (); my @parstack = (); - &initdepth; - + &initdepth(); + &init_alarm(); my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars, - $safeeval,\%style_for_target); - if ($ENV{'request.uri'}) { - &writeallows($ENV{'request.uri'}); + $safeeval,\%style_for_target,1); + + if (@stack) { + &warning(&mt('At end of file some tags were still left unclosed:'). + ' <'.join('>, <',reverse(@stack)). + '>'); + } + if ($env{'request.uri'}) { + &writeallows($env{'request.uri'}); } + &do_registered_ssi(); if ($Apache::lonxml::counter_changed) { &store_counter() } - return $finaloutput; -} - -sub htmlclean { - my ($raw,$full)=@_; - - my $tree = HTML::TreeBuilder->new; - $tree->ignore_unknown(0); - - $tree->parse($raw); - my $output= $tree->as_HTML(undef,' '); + &clean_safespace($safeeval); - $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; - } - - $tree = $tree->delete; - - return $output; + if (@script_var_displays) { + $finaloutput .= join('',@script_var_displays); + undef(@script_var_displays); + } + &init_state(); + if ($env{'form.return_only_error_and_warning_counts'}) { + if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) { + my $error=&verify_html($content_file_string); + if ($error) { $errorcount++; } + } + return "$errorcount:$warningcount"; + } + return $finaloutput; } sub latex_special_symbols { - my ($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/ $\backslash$ per LaTex line by line pg 10. + $string =~ s/(\$|%|\{|\})/\\$1/g; + $string=&Apache::lonprintout::character_chart($string); + # any & or # leftover should be safe to just escape + $string=~s/([^\\])\&/$1\\\&/g; + $string=~s/([^\\])\#/$1\\\#/g; + $string =~ s/_/\\_/g; # _ -> \_ + $string =~ s/\^/\\\^{}/g; # ^ -> \^{} + } else { + $string=~s/\\/\\ensuremath{\\backslash}/g; + $string=~s/\\\%|\%/\\\%/g; + $string=~s/\\{|{/\\{/g; + $string=~s/\\}|}/\\}/g; + $string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g; + $string=~s/\\\$|\$/\\\$/g; + $string=~s/\\\_|\_/\\\_/g; + $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g; + $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less + $string=&Apache::lonprintout::character_chart($string); + # any & or # leftover should be safe to just escape + $string=~s/\\\&|\&/\\\&/g; + $string=~s/\\\#|\#/\\\#/g; + $string=~s/\|/\$\\mid\$/g; +#single { or } How to escape? + } + return $string; } sub inner_xmlparse { - my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target)=@_; + my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_; my $finaloutput = ''; my $result; my $token; + my $dontpop=0; + my $startredirection = $Apache::lonxml::redirection; while ( $#$pars > -1 ) { while ($token = $$pars['-1']->get_token) { - if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) { + if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) { if ($metamode<1) { my $text=$token->[1]; if ($token->[0] eq 'C' && $target eq 'tex') { - $text = '%'.$text."\n"; + $text = ''; +# $text = '%'.$text."\n"; } $result.=$text; } + } elsif (($token->[0] eq 'D')) { + if ($metamode<1 && $target eq 'web') { + my $text=$token->[1]; + $result.=$text; + } } elsif ($token->[0] eq 'PI') { - if ($metamode<1) { + if ($metamode<1 && $target eq 'web') { $result=$token->[2]; } } elsif ($token->[0] eq 'S') { @@ -714,54 +392,61 @@ sub inner_xmlparse { my $string=$$style_for_target{$token->[1]}. ''; &Apache::lonxml::newparser($pars,\$string); + $Apache::lonxml::style_values=$$parstack[-1]; + $Apache::lonxml::style_end_values=$$parstack[-1]; } else { $result = &callsub("start_$token->[1]", $target, $token, $stack, $parstack, $pars, $safeeval, $style_for_target); } } elsif ($token->[0] eq 'E') { - #clear out any tags that didn't end - while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) { - my $lasttag=$$stack[-1]; - if ($token->[1] =~ /^$lasttag$/i) { - &Apache::lonxml::warning('Using tag </'.$token->[1].'> as end tag to <'.$$stack[-1].'>'); - last; - } else { - &Apache::lonxml::warning('Found tag </'.$token->[1].'> when looking for </'.$$stack[-1].'> in file'); - &end_tag($stack,$parstack,$token); - } - } - if ($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); + $Apache::lonxml::style_values=$Apache::lonxml::style_end_values; + $Apache::lonxml::style_end_values=''; + $dontpop=1; } else { - $result = &callsub("end_$token->[1]", $target, $token, $stack, - $parstack, $pars,$safeeval, $style_for_target); + #clear out any tags that didn't end + while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) { + my $lasttag=$$stack[-1]; + if ($token->[1] =~ /^\Q$lasttag\E$/i) { + &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','</'.$token->[1].'>','.$token->[3].','<'.$$stack[-1].'>')); + last; + } else { + &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','</'.$token->[1].'>',$token->[3],'</'.$$stack[-1].'>')); + &end_tag($stack,$parstack,$token); + } + } + $result = &callsub("end_$token->[1]", $target, $token, $stack, + $parstack, $pars,$safeeval, $style_for_target); } } else { &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:"); } #evaluate variable refs in result - if ($result ne "") { - if ( $#$parstack > -1 ) { - $result=&Apache::run::evaluate($result,$safeeval,$$parstack[-1]); - } else { - $result= &Apache::run::evaluate($result,$safeeval,''); - } + if ($Apache::lonxml::post_evaluate &&$result ne "") { + my $extras; + if (!$Apache::lonxml::usestyle) { + $extras=$Apache::lonxml::style_values; + } + if ( $#$parstack > -1 ) { + $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]); + } else { + $result= &Apache::run::evaluate($result,$safeeval,$extras); + } } + $Apache::lonxml::post_evaluate=1; + if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) { - if ($target eq 'tex') { - $result=&latex_special_symbols($result,$stack,$parstack); - } + #Style file definitions should be correct + if ($target eq 'tex' && ($Apache::lonxml::usestyle)) { + $result=&latex_special_symbols($result); + } } - # 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 { @@ -769,9 +454,10 @@ sub inner_xmlparse { } $result = ''; - if ($token->[0] eq 'E') { + if ($token->[0] eq 'E' && !$dontpop) { &end_tag($stack,$parstack,$token); } + $dontpop=0; } if ($#$pars > -1) { pop @$pars; @@ -783,13 +469,26 @@ sub inner_xmlparse { # $finaloutput.=&endredirection; # } - + if ( $start && $target eq 'grade') { &endredirection(); } + if ( $Apache::lonxml::redirection > $startredirection) { + while ($Apache::lonxml::redirection > $startredirection) { + $finaloutput .= &endredirection(); + } + } if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) { $finaloutput=&afterburn($finaloutput); + } + if ($target eq 'modified') { +# if modfied, handle startpart and endpart + $finaloutput=~s/\]*\>(.*)\]*\>/$1<\/part>/gs; } return $finaloutput; } +## +## Looks to see if there is a subroutine defined for this tag. If so, call it, +## otherwise do not call it as we do not know what it is. +## sub callsub { my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $currentstring=''; @@ -798,6 +497,8 @@ sub callsub { my $sub1; no strict 'refs'; my $tag=$token->[1]; +# get utterly rid of extended html tags + if ($tag=~/^x\-/i) { return ''; } my $space=$Apache::lonxml::alltags{$tag}[-1]; if (!$space) { $tag=~tr/A-Z/a-z/; @@ -806,7 +507,6 @@ sub callsub { } my $deleted=0; - $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter); if (($token->[0] eq 'S') && ($target eq 'modified')) { $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack, $parstack,$parser,$safeeval, @@ -820,6 +520,10 @@ sub callsub { $parstack,$parser,$safeeval, $style); } else { + if ($target eq 'tex') { + # throw away tag name + return ''; + } #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode"); if ($metamode <1) { if (defined($token->[4]) && ($metamode < 1)) { @@ -838,17 +542,23 @@ sub callsub { } elsif ($token->[0] eq 'E') { $currentstring = &Apache::edit::tag_end($target,$token); } - } elsif ($target eq 'modified') { + } + } + if ($target eq 'modified' && $nodefault eq '') { + if ($currentstring eq '') { + if ($token->[0] eq 'S') { + $currentstring = $token->[4]; + } elsif ($token->[0] eq 'E') { + $currentstring = $token->[2]; + } else { + $currentstring = $token->[2]; + } + } if ($token->[0] eq 'S') { - $currentstring = $token->[4]; - $currentstring.=&Apache::edit::handle_insert(); + $currentstring.=&Apache::edit::handle_insert(); } elsif ($token->[0] eq 'E') { - $currentstring = $token->[2]; - $currentstring.=&Apache::edit::handle_insertafter($token->[1]); - } else { - $currentstring = $token->[2]; + $currentstring.=&Apache::edit::handle_insertafter($token->[1]); } - } } } use strict 'refs'; @@ -856,17 +566,43 @@ sub callsub { return $currentstring; } +{ + my %state; + + sub init_state { + undef(%state); + } + + sub set_state { + my ($key,$value) = @_; + $state{$key} = $value; + return $value; + } + sub get_state { + my ($key) = @_; + return $state{$key}; + } +} + sub setup_globals { my ($request,$target)=@_; $Apache::lonxml::request=$request; - $Apache::lonxml::registered = 0; $errorcount=0; $warningcount=0; + $Apache::lonxml::internal_error=0; $Apache::lonxml::default_homework_loaded=0; $Apache::lonxml::usestyle=1; &init_counter(); + &clear_bubble_lines_for_part(); + &init_state(); + &set_state('target',$target); @Apache::lonxml::pwd=(); @Apache::lonxml::extlinks=(); + @script_var_displays=(); + @Apache::lonxml::ssi_info=(); + $Apache::lonxml::post_evaluate=1; + $Apache::lonxml::warnings_error_header=''; + $Apache::lonxml::substitute_LaTeX_symbols = 1; if ($target eq 'meta') { $Apache::lonxml::redirection = 0; $Apache::lonxml::metamode = 1; @@ -878,7 +614,7 @@ sub setup_globals { $Apache::lonxml::evaluate = 1; $Apache::lonxml::import = 1; } elsif ($target eq 'grade') { - &startredirection; + &startredirection(); #ended in inner_xmlparse on exit $Apache::lonxml::metamode = 0; $Apache::lonxml::evaluate = 1; $Apache::lonxml::import = 1; @@ -907,13 +643,44 @@ sub setup_globals { sub init_safespace { my ($target,$safeeval,$safehole,$safeinit) = @_; + $safeeval->reval('use Math::Complex;'); + $safeeval->reval('use LaTeX::Table;'); + $safeeval->deny_only(':dangerous'); + $safeeval->permit_only(":default"); $safeeval->permit("entereval"); $safeeval->permit(":base_math"); $safeeval->permit("sort"); + $safeeval->permit("time"); + $safeeval->permit("caller"); + $safeeval->deny("rand"); + $safeeval->deny("srand"); $safeeval->deny(":base_io"); $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse'); + $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart'); $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); - + $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval, + '&chem_standard_order'); + $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status'); + $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication'); + + $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval'); + $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check'); + $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval, + '&maxima_cas_formula_fix'); + + $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval'); + $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry'); + $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray'); + $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check'); + $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval, + '&r_cas_formula_fix'); + + $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval, + '&capa_formula_fix'); + + $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval, + '&locallocaltime'); + $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin'); $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos'); $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan'); @@ -957,6 +724,36 @@ sub init_safespace { $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' ); $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri'); + $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat'); + $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval, + '&Math::Cephes::Matrix::new'); + $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval, + '&Math::Cephes::Matrix::coef'); + $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval, + '&Math::Cephes::Matrix::clr'); + $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval, + '&Math::Cephes::Matrix::add'); + $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval, + '&Math::Cephes::Matrix::sub'); + $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval, + '&Math::Cephes::Matrix::mul'); + $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval, + '&Math::Cephes::Matrix::div'); + $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval, + '&Math::Cephes::Matrix::inv'); + $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval, + '&Math::Cephes::Matrix::transp'); + $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval, + '&Math::Cephes::Matrix::simq'); + $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval, + '&Math::Cephes::Matrix::mat_to_vec'); + $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval, + '&Math::Cephes::Matrix::vec_to_mat'); + $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval, + '&Math::Cephes::Matrix::check'); + $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval, + '&Math::Cephes::Matrix::check'); + # $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract'); # $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd'); # $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub'); @@ -985,22 +782,75 @@ sub init_safespace { $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase'); $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed'); $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed'); + $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages'); + $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR'); + $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG'); + $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS'); + $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS'); + $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange'); + $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val'); + $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f'); + $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx'); + $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2'); + $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords'); + $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords'); + $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength'); + $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle'); +# use Data::Dumper; +# $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper'); #need to inspect this class of ops # $safeeval->deny(":base_orig"); + $safeeval->permit("require"); $safeinit .= ';$external::target="'.$target.'";'; - my $rndseed; - my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); - $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name); - $safeinit .= ';$external::randomseed='.$rndseed.';'; &Apache::run::run($safeinit,$safeeval); + &initialize_rndseed($safeeval); +} + +sub clean_safespace { + my ($safeeval) = @_; + delete_package_recurse($safeeval->{Root}); +} + +sub delete_package_recurse { + my ($package) = @_; + my @subp; + { + no strict 'refs'; + while (my ($key,$val) = each(%{*{"$package\::"}})) { + if (!defined($val)) { next; } + local (*ENTRY) = $val; + if (defined *ENTRY{HASH} && $key =~ /::$/ && + $key ne "main::" && $key ne "::") + { + my ($p) = $package ne "main" ? "$package\::" : ""; + ($p .= $key) =~ s/::$//; + push(@subp,$p); + } + } + } + foreach my $p (@subp) { + delete_package_recurse($p); + } + Symbol::delete_package($package); +} + +sub initialize_rndseed { + my ($safeeval)=@_; + my $rndseed; + my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser(); + $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name); + my $safeinit = '$external::randomseed="'.$rndseed.'";'; + &Apache::lonxml::debug("Setting rndseed to $rndseed"); + &Apache::run::run($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) { + my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}. + '/default_homework.lcpm'); + if ($default eq -1) { &Apache::lonxml::error("Unable to find default_homework.lcpm"); } else { &Apache::run::run($default,$safeeval); @@ -1008,18 +858,51 @@ sub default_homework_load { } } +{ + my $alarm_depth; + sub init_alarm { + alarm(0); + $alarm_depth=0; + } + + sub start_alarm { + if ($alarm_depth<1) { + my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'}); + if ($old) { + &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur."); + } + } + $alarm_depth++; + } + + sub end_alarm { + $alarm_depth--; + if ($alarm_depth<1) { alarm(0); } + } +} +my $metamode_was; sub startredirection { - $Apache::lonxml::redirection++; - push (@Apache::lonxml::outputstack, ''); + if (!$Apache::lonxml::redirection) { + $metamode_was=$Apache::lonxml::metamode; + } + $Apache::lonxml::metamode=0; + $Apache::lonxml::redirection++; + push (@Apache::lonxml::outputstack, ''); } sub endredirection { - if (!$Apache::lonxml::redirection) { - &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller); - return ''; - } - $Apache::lonxml::redirection--; - pop @Apache::lonxml::outputstack; + if (!$Apache::lonxml::redirection) { + &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller); + return ''; + } + $Apache::lonxml::redirection--; + if (!$Apache::lonxml::redirection) { + $Apache::lonxml::metamode=$metamode_was; + } + pop @Apache::lonxml::outputstack; +} +sub in_redirection { + return ($Apache::lonxml::redirection > 0) } sub end_tag { @@ -1031,208 +914,446 @@ sub end_tag { sub initdepth { @Apache::lonxml::depthcounter=(); - $Apache::lonxml::depth=-1; - $Apache::lonxml::olddepth=-1; + undef($Apache::lonxml::last_depth_count); } + +my @timers; +my $lasttime; +# @Apache::lonxml::depthcounter -> count of tags that exist so +# far at each level +# $Apache::lonxml::last_depth_count -> when ascending, need to +# remember the count for the level below the current level (for +# example going from 1_2 -> 1 -> 1_3 need to remember the 2 ) + sub increasedepth { my ($token) = @_; - $Apache::lonxml::depth++; - $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++; - if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) { - $Apache::lonxml::olddepth=$Apache::lonxml::depth; - } - my $curdepth=join('_',@Apache::lonxml::depthcounter); - &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"); + push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1); + undef($Apache::lonxml::last_depth_count); + my $time; + if ($Apache::lonxml::debug eq "1") { + push(@timers,[&gettimeofday()]); + $time=&tv_interval($lasttime); + $lasttime=[&gettimeofday()]; + } + my $spacing=' 'x($#Apache::lonxml::depthcounter); + $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter); +# &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time"); #print "
s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"; } sub decreasedepth { my ($token) = @_; - $Apache::lonxml::depth--; - if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) { - $#Apache::lonxml::depthcounter--; - $Apache::lonxml::olddepth=$Apache::lonxml::depth+1; + if ( $#Apache::lonxml::depthcounter == -1) { + &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file.")); } - if ( $Apache::lonxml::depth < -1) { - &Apache::lonxml::warning("Missing tags, unable to properly run file."); - $Apache::lonxml::depth='-1'; - } - my $curdepth=join('_',@Apache::lonxml::depthcounter); - &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"); + $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter); + + my ($timer,$time); + if ($Apache::lonxml::debug eq "1") { + $timer=pop(@timers); + $time=&tv_interval($lasttime); + $lasttime=[&gettimeofday()]; + } + my $spacing=' 'x($#Apache::lonxml::depthcounter); + $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter); +# &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer)); #print "
e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"; } +sub get_id { + my ($parstack,$safeeval)=@_; + my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval); + if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) { + &error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"'.$id.'"')); + } + if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; } + return $id; +} + sub get_all_text_unbalanced { #there is a copy of this in lonpublisher.pm - my($tag,$pars)= @_; - my $token; - my $result=''; - $tag='<'.$tag.'>'; - while ($token = $$pars[-1]->get_token) { - if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { - $result.=$token->[1]; - } elsif ($token->[0] eq 'PI') { - $result.=$token->[2]; - } elsif ($token->[0] eq 'S') { - $result.=$token->[4]; - } elsif ($token->[0] eq 'E') { - $result.=$token->[2]; - } - if ($result =~ /(.*)\Q$tag\E(.*)/s) { - &Apache::lonxml::debug('Got a winner with leftovers ::'.$2); - &Apache::lonxml::debug('Result is :'.$1); - $result=$1; - my $redo=$tag.$2; - &Apache::lonxml::newparser($pars,\$redo); - last; - } - } - return $result + my($tag,$pars)= @_; + my $token; + my $result=''; + $tag='<'.$tag.'>'; + while ($token = $$pars[-1]->get_token) { + if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { + if ($token->[0] eq 'T' && $token->[2]) { + $result.='[1].']]>'; + } else { + $result.=$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/is) { + ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is; + #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2); + #&Apache::lonxml::debug('Result is :'.$1); + $redo=$tag.$redo; + &Apache::lonxml::newparser($pars,\$redo); + last; + } + } + return $result + } +######################################################################### +# # +# bubble line counter management # +# # +######################################################################### + +=pod + +For bubble grading mode and exam bubble printing mode, the tracking of +the current 'bubble line number' is stored in the %env element +'form.counter', and is modifed and handled by the following routines. + +The value of it is stored in $Apache:lonxml::counter when live and +stored back to env after done. + +=item &increment_counter($increment, $part_response); + +Increments the internal counter environment variable a specified amount + +Optional Arguments: + $increment - amount to increment by (defaults to 1) + Also 1 if the value is negative or zero. + $part_response - A concatenation of the part and response id + identifying exactly what is being 'answered'. + + +=cut + sub increment_counter { - $Apache::lonxml::counter++; + my ($increment, $part_response) = @_; + if ($env{'form.grade_noincrement'}) { return; } + if (!defined($increment) || $increment le 0) { + $increment = 1; + } + $Apache::lonxml::counter += $increment; + + # If the caller supplied the response_id parameter, + # Maintain its counter.. creating if necessary. + + if (defined($part_response)) { + if (!defined($Apache::lonxml::counters_per_part{$part_response})) { + $Apache::lonxml::counters_per_part{$part_response} = 0; + } + $Apache::lonxml::counters_per_part{$part_response} += $increment; + my $new_value = $Apache::lonxml::counters_per_part{$part_response}; + } + $Apache::lonxml::counter_changed=1; } +=pod + +=item &init_counter($increment); + +Initialize the internal counter environment variable + +=cut + sub init_counter { - if (defined($ENV{'form.counter'})) { - $Apache::lonxml::counter=$ENV{'form.counter'}; - } elsif (not defined($Apache::lonxml::counter)) { + if ($env{'request.state'} eq 'construct') { + $Apache::lonxml::counter=1; + $Apache::lonxml::counter_changed=1; + } elsif (defined($env{'form.counter'})) { + $Apache::lonxml::counter=$env{'form.counter'}; + $Apache::lonxml::counter_changed=0; + } else { $Apache::lonxml::counter=1; - &store_counter(); + $Apache::lonxml::counter_changed=1; } - $Apache::lonxml::counter_changed=0; } sub store_counter { - &Apache::lonnet::appenv(('form.counter' => $Apache::lonxml::counter)); + &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter}); + $Apache::lonxml::counter_changed=0; return ''; } +{ + my $state; + sub clear_problem_counter { + undef($state); + &Apache::lonnet::delenv('form.counter'); + &Apache::lonxml::init_counter(); + &Apache::lonxml::store_counter(); + } + + sub remember_problem_counter { + &Apache::lonnet::transfer_profile_to_env(undef,undef,1); + $state = $env{'form.counter'}; + } + + sub restore_problem_counter { + if (defined($state)) { + &Apache::lonnet::appenv({'form.counter' => $state}); + } + } + sub get_problem_counter { + if ($Apache::lonxml::counter_changed) { &store_counter() } + &Apache::lonnet::transfer_profile_to_env(undef,undef,1); + return $env{'form.counter'}; + } +} + +=pod + +=item bubble_lines_for_part(part_response) + +Returns the number of lines required to get a response for +$part_response (this is just $Apache::lonxml::counters_per_part{$part_response} + +=cut + +sub bubble_lines_for_part { + my ($part_response) = @_; + + if (!defined($Apache::lonxml::counters_per_part{$part_response})) { + return 0; + } else { + return $Apache::lonxml::counters_per_part{$part_response}; + } +} + +=pod + +=item clear_bubble_lines_for_part + +Clears the hash of bubble lines per part. If a caller +needs to analyze several resources this should be called between +resources to reset the hash for each problem being analyzed. + +=cut + +sub clear_bubble_lines_for_part { + undef(%Apache::lonxml::counters_per_part); +} + +=pod + +=item set_bubble_lines(part_response, value) + +If there is a problem part, that for whatever reason +requires bubble lines that are not +the same as the counter increment, it can call this sub during +analysis to set its hash value explicitly. + +=cut + +sub set_bubble_lines { + my ($part_response, $value) = @_; + + $Apache::lonxml::counters_per_part{$part_response} = $value; +} + +=pod + +=item get_bubble_line_hash + +Returns the current bubble line hash. This is assumed to +be small so we return a copy + + +=cut + +sub get_bubble_line_hash { + return %Apache::lonxml::counters_per_part; +} + + +#-------------------------------------------------- + sub get_all_text { - my($tag,$pars)= @_; - &Apache::lonxml::debug("Got a ".ref($pars)); - my $gotfullstack=1; - if (ref($pars) ne 'ARRAY') { - $gotfullstack=0; - $pars=[$pars]; - } - my $depth=0; - my $token; - my $result=''; - if ( $tag =~ m:^/: ) { - my $tag=substr($tag,1); - #&Apache::lonxml::debug("have:$tag:"); - my $top_empty=0; - while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) { - while (($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(@$pars); - pop(@Apache::lonxml::pwd); - } - if (($depth >=0) && ($#$pars == 0) ) { &debug("here4");$top_empty=1; } - } - if ($top_empty && $depth >= 0) { - #never found the end tag ran out of text, throw error send back blank - &error('Never found end tag for <'.$tag.'>'); - if ($gotfullstack) { - my $newstring=''.$result; - &Apache::lonxml::newparser($pars,\$newstring); - } - $result=''; - } - } else { - while ($#$pars > -1) { - while ($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(@$pars); - pop(@Apache::lonxml::pwd); - } else { last; } - } - } - if ($result =~ m||) { - $Apache::lonxml::usestyle=1; - } - #&Apache::lonxml::debug("Exit:$result:"); - return $result + my($tag,$pars,$style)= @_; + my $gotfullstack=1; + if (ref($pars) ne 'ARRAY') { + $gotfullstack=0; + $pars=[$pars]; + } + if (ref($style) ne 'HASH') { + $style={}; + } + my $depth=0; + my $token; + my $result=''; + if ( $tag =~ m:^/: ) { + my $tag=substr($tag,1); + #&Apache::lonxml::debug("have:$tag:"); + my $top_empty=0; + while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) { + while (($depth >=0) && ($token = $$pars[-1]->get_token)) { + #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd); + if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { + if ($token->[2]) { + $result.='[1].']]>'; + } else { + $result.=$token->[1]; + } + } elsif ($token->[0] eq 'PI') { + $result.=$token->[2]; + } elsif ($token->[0] eq 'S') { + if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; } + if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; } + if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; } + $result.=$token->[4]; + } elsif ($token->[0] eq 'E') { + if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; } + #skip sending back the last end tag + if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) { + my $string= + ''. + $$style{'/'.$token->[1]}. + $token->[2]. + ''; + &Apache::lonxml::newparser($pars,\$string); + #&Apache::lonxml::debug("reParsing $string"); + next; + } + if ($depth > -1) { + $result.=$token->[2]; + } else { + $$pars[-1]->unget_token($token); + } + } + } + if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; } + if (($depth >=0) && ($#$pars > 0) ) { + pop(@$pars); + pop(@Apache::lonxml::pwd); + } + } + if ($top_empty && $depth >= 0) { + #never found the end tag ran out of text, throw error send back blank + &error('Never found end tag for <'.$tag. + '> current string 
'.
+		   &HTML::Entities::encode($result,'<>&"').
+		   '
'); + if ($gotfullstack) { + my $newstring=''.$result; + &Apache::lonxml::newparser($pars,\$newstring); + } + $result=''; + } + } else { + while ($#$pars > -1) { + while ($token = $$pars[-1]->get_token) { + #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]"); + if (($token->[0] eq 'T')||($token->[0] eq 'C')|| + ($token->[0] eq 'D')) { + if ($token->[2]) { + $result.='[1].']]>'; + } else { + $result.=$token->[1]; + } + } elsif ($token->[0] eq 'PI') { + $result.=$token->[2]; + } elsif ($token->[0] eq 'S') { + if ( $token->[1] =~ /^\Q$tag\E$/i) { + $$pars[-1]->unget_token($token); last; + } else { + $result.=$token->[4]; + } + if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; } + if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; } + } elsif ($token->[0] eq 'E') { + $result.=$token->[2]; + } + } + if (($#$pars > 0) ) { + pop(@$pars); + pop(@Apache::lonxml::pwd); + } else { last; } + } + } + #&Apache::lonxml::debug("Exit:$result:"); + return $result } sub newparser { my ($parser,$contentref,$dir) = @_; push (@$parser,HTML::LCParser->new($contentref)); - $$parser['-1']->xml_mode('1'); + $$parser[-1]->xml_mode(1); + $$parser[-1]->marked_sections(1); if ( $dir eq '' ) { push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]); } else { push (@Apache::lonxml::pwd, $dir); } -# &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd"); -# &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]"); } sub parstring { - my ($token) = @_; - my $temp=''; - foreach (@{$token->[3]}) { - unless ($_=~/\W/) { - my $val=$token->[2]->{$_}; - $val =~ s/([\%\@\\\"])/\\$1/g; - #if ($val =~ m/^[\%\@]/) { $val="\\".$val; } - $temp .= "my \$$_=\"$val\";" + my ($token) = @_; + my (@vars,@values); + foreach my $attr (@{$token->[3]}) { + if ($attr!~/\W/) { + my $val=$token->[2]->{$attr}; + $val =~ s/([\%\@\\\"\'])/\\$1/g; + $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g; + $val =~ s/(\$)$/\\$1/; + #if ($val =~ m/^[\%\@]/) { $val="\\".$val; } + push(@vars,"\$$attr"); + push(@values,"\"$val\""); + } } - } - return $temp; + my $var_init = + (@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');' + : ''; + return $var_init; +} + +sub extlink { + my ($res,$exact)=@_; + if (!$exact) { + $res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res); + } + push(@Apache::lonxml::extlinks,$res) } sub writeallows { unless ($#extlinks>=0) { return; } - my $thisurl='/res/'.&Apache::lonnet::declutter(shift); - if ($ENV{'httpref.'.$thisurl}) { - $thisurl=$ENV{'httpref.'.$thisurl}; + my $thisurl = &Apache::lonnet::clutter(shift); + if ($env{'httpref.'.$thisurl}) { + $thisurl=$env{'httpref.'.$thisurl}; } my $thisdir=$thisurl; $thisdir=~s/\/[^\/]+$//; my %httpref=(); foreach (@extlinks) { $httpref{'httpref.'. - &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl; + &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl; } @extlinks=(); - &Apache::lonnet::appenv(%httpref); + &Apache::lonnet::appenv(\%httpref); +} + +sub register_ssi { + my ($url,%form)=@_; + push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form}); + return ''; +} + +sub do_registered_ssi { + foreach my $info (@Apache::lonxml::ssi_info) { + my %form=%{ $info->{'form'}}; + my $url=$info->{'url'}; + &Apache::lonnet::ssi($url,%form); + } +} + +sub add_script_result { + my ($display) = @_; + push(@script_var_displays, $display); } # @@ -1242,27 +1363,27 @@ sub afterburn { my $result=shift; &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, ['highlight','anchor','link']); - if ($ENV{'form.highlight'}) { - foreach (split(/\,/,$ENV{'form.highlight'})) { + if ($env{'form.highlight'}) { + foreach (split(/\,/,$env{'form.highlight'})) { my $anchorname=$_; my $matchthis=$anchorname; $matchthis=~s/\_+/\\s\+/g; - $result=~s/($matchthis)/\$1\<\/font\>/gs; + $result=~s/(\Q$matchthis\E)/\$1\<\/font\>/gs; } } - if ($ENV{'form.link'}) { - foreach (split(/\,/,$ENV{'form.link'})) { + if ($env{'form.link'}) { + foreach (split(/\,/,$env{'form.link'})) { my ($anchorname,$linkurl)=split(/\>/,$_); my $matchthis=$anchorname; $matchthis=~s/\_+/\\s\+/g; - $result=~s/($matchthis)/\$1\<\/a\>/gs; + $result=~s/(\Q$matchthis\E)/\$1\<\/a\>/gs; } } - if ($ENV{'form.anchor'}) { - my $anchorname=$ENV{'form.anchor'}; + if ($env{'form.anchor'}) { + my $anchorname=$env{'form.anchor'}; my $matchthis=$anchorname; $matchthis=~s/\_+/\\s\+/g; - $result=~s/($matchthis)/\$1\<\/a\>/s; + $result=~s/(\Q$matchthis\E)/\$1\<\/a\>/s; $result.=(<<"ENDSCRIPT"); +SIMPLECONTENT + return $filecontents; +} + +sub verify_html { + my ($filecontents)=@_; + my ($is_html,$is_xml); + if ($filecontents =~/(?:\<|\<\;)\?xml[^\<]*\?(?:\>|\>\;)/is) { + $is_xml = 1; + } elsif ($filecontents =~/(?:\<|\<\;)html(?:\s+[^\<]+|\s*)(?:\>|\>\;)/is) { + $is_html = 1; + } + unless ($is_xml || $is_html) { + return &mt('File does not have [_1] or [_2] starting tag','<html>','<?xml ?>'); + } + if ($is_html) { + if ($filecontents!~/(?:\<|\<\;)\/html(?:\>|\>\;)/is) { + return &mt('File does not have [_1] ending tag','<html>'); + } + if ($filecontents!~/(?:\<|\<\;)(?:body|frameset)[^\<]*(?:\>|\>\;)/is) { + return &mt('File does not have [_1] or [_2] starting tag','<body>','<frameset>'); + } + if ($filecontents!~/(?:\<|\<\;)\/(?:body|frameset)[^\<]*(?:\>|\>\;)/is) { + return &mt('File does not have [_1] or [_2] ending tag','<body>','<frameset>'); + } + } + return ''; +} + +sub renderingoptions { + my %langchoices=('' => ''); + foreach (&Apache::loncommon::languageids()) { + if (&Apache::loncommon::supportedlanguagecode($_)) { + $langchoices{&Apache::loncommon::supportedlanguagecode($_)} + = &Apache::loncommon::plainlanguagedescription($_); + } + } + my $output; + unless ($env{'form.forceedit'}) { + $output .= + ''. + &mt('Language:').' '. + &Apache::loncommon::select_form( + $env{'form.languages'}, + 'languages', + {&Apache::lonlocal::texthash(%langchoices)}). + ''; + } + $output .= + ' '. + &mt('Math Rendering:').' '. + &Apache::loncommon::select_form( + $env{'form.texengine'}, + 'texengine', + {&Apache::lonlocal::texthash + ('' => '', + 'tth' => 'tth (TeX to HTML)', + 'MathJax' => 'MathJax', + 'jsMath' => 'jsMath', + 'mimetex' => 'mimetex (Convert to Images)')}). + ''; + return $output; +} sub inserteditinfo { - my ($result,$filecontents)=@_; - $filecontents = &HTML::Entities::encode($filecontents); -# my $editheader='Edit below
'; - my $buttons=(< - - -BUTTONS + my ($filecontents, $filetype, $filename)=@_; + $filecontents = &HTML::Entities::encode($filecontents,'<>&"'); + my $xml_help = ''; + my $initialize=''; + my $textarea_id = 'filecont'; + my $dragmath_button; + my ($add_to_onload, $add_to_onresize); + $initialize=&Apache::lonhtmlcommon::spellheader(); + if (($filetype eq 'html') && (&Apache::lonhtmlcommon::htmlareabrowser())) { + my $lang = &Apache::lonhtmlcommon::htmlarea_lang(); + my %textarea_args = ( + fullpage => 'true', + dragmath => 'math', + ); + $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args); + } + $initialize .= (< +// + +FULLPAGE + if ($filetype eq 'html') { + $dragmath_button = ''.&Apache::lonhtmlcommon::dragmath_button('filecont',1).''; + $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup'); + } + $add_to_onload = 'initDocument();'; + $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');"; + + if ($filetype eq 'html') { + $xml_help=&Apache::loncommon::helpLatexCheatsheet(); + } + + my $titledisplay=&display_title(); + my $textareaclass; + my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit', + 'vi' => 'Save and View', + 'dv' => 'Discard Edits and View', + 'un' => 'undo', + 'ed' => 'Edit'); + my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont'); + my $textarea_events = &Apache::edit::element_change_detection(); + my $form_events = &Apache::edit::form_change_detection(); + my $htmlerror; + if ($filetype eq 'html') { + $htmlerror=&verify_html($filecontents); + if ($htmlerror) { + $htmlerror=''.$htmlerror.''; + } + if (&Apache::lonhtmlcommon::htmlareabrowser()) { + $textareaclass = 'class="LC_richDefaultOff"'; + } + } my $editfooter=(< +$initialize -
- -$buttons
- -
$buttons -
+ +
+ +
+ $filename + + $xml_help +
+
+ + + $htmlerror $dragmath_button +
+
+ + +
+
+
$spelllink +
+
+ $titledisplay +
+ ENDFOOTER -# $result=~s/(\]*\>)/$1$editheader/is; - $result=~s/(\<\/body\>)/$editfooter/is; - return $result; + return ($editfooter,$add_to_onload,$add_to_onresize);; } 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'}) + 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 $ENV{'form.grade_target'} + return ($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'}); + } elsif ($env{'request.state'} eq 'construct') { + if ( defined($env{'form.grade_target'})) { + return ($env{'form.grade_target'}); } else { return 'web'; } @@ -1355,121 +1620,370 @@ sub get_target { } sub handler { - my $request=shift; + my $request=shift; - my $target=&get_target(); - - $Apache::lonxml::debug=0; - - if ($ENV{'browser.mathml'}) { - $request->content_type('text/xml'); - } else { - $request->content_type('text/html'); - } - &Apache::loncommon::no_cache($request); - $request->send_http_header; + my $target=&get_target(); + $Apache::lonxml::debug=$env{'user.debug'}; + + &Apache::loncommon::content_type($request,'text/html'); + &Apache::loncommon::no_cache($request); + if ($env{'request.state'} eq 'published') { + $request->set_last_modified(&Apache::lonnet::metadata($request->uri, + 'lastrevisiondate')); + } + # Embedded Flash movies from Camtasia served from https will not display in IE + # if XML config file has expired from cache. + if ($ENV{'SERVER_PORT'} == 443) { + if ($request->uri =~ /\.xml$/) { + my ($httpbrowser,$clientbrowser) = + &Apache::loncommon::decode_user_agent($request); + if ($clientbrowser =~ /^explorer$/i) { + delete $request->headers_out->{'Cache-control'}; + delete $request->headers_out->{'Pragma'}; + my $expiration = time + 60; + my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration)); + $request->headers_out->set("Expires" => $date); + } + } + } + $request->send_http_header; + + return OK if $request->header_only; - return OK if $request->header_only; + my $file=&Apache::lonnet::filelocation("",$request->uri); + my ($filetype,$breadcrumbtext); + if ($file =~ /\.(sty|css|js|txt|tex)$/) { + $filetype=$1; + } else { + $filetype='html'; + } + if ($filetype eq 'sty') { + $breadcrumbtext = 'Style File Editor'; + } elsif ($filetype eq 'js') { + $breadcrumbtext = 'Javascript Editor'; + } elsif ($filetype eq 'css') { + $breadcrumbtext = 'CSS Editor'; + } elsif ($filetype eq 'txt') { + $breadcrumbtext = 'Text Editor'; + } elsif ($filetype eq 'tex') { + $breadcrumbtext = 'TeX Editor'; + } else { + $breadcrumbtext = 'HTML Editor'; + } - my $file=&Apache::lonnet::filelocation("",$request->uri); # # Edit action? Save file. # - unless ($ENV{'request.state'} eq 'published') { - if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) { - &storefile($file,$ENV{'form.filecont'}); - } - } - my %mystyle; - my $result = ''; - my $filecontents=&Apache::lonnet::getfile($file); - if ($filecontents == -1) { - $result=(< - -File not found - - -File not found: $file - - -ENDNOTFOUND - $filecontents=''; - if ($ENV{'request.state'} ne 'published') { - $filecontents=&createnewhtml(); - $ENV{'form.editmode'}='Edit'; #force edit mode - } - } else { - unless ($ENV{'request.state'} eq 'published') { - if ($ENV{'form.attemptclean'}) { - $filecontents=&htmlclean($filecontents,1); - } + if (!($env{'request.state'} eq 'published')) { + if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) { + my $html_file=&Apache::lonnet::getfile($file); + my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'}); + if ($env{'form.savethisfile'}) { + $env{'form.editmode'}='Edit'; #force edit mode + } + } } - if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) { - $result = &Apache::lonxml::xmlparse($request,$target,$filecontents, - '',%mystyle); + my %mystyle; + my $result = ''; + my $filecontents=&Apache::lonnet::getfile($file); + if ($filecontents eq -1) { + my $start_page=&Apache::loncommon::start_page('File Error'); + my $end_page=&Apache::loncommon::end_page(); + my $errormsg='

' + .&mt('File not found: [_1]' + ,''.$file.'') + .'

'; + $result=(< or need to clean + # up if it did + &Apache::structuretags::reset_problem_globals(); + &Apache::lonhomework::finished_parsing(); + } elsif ($filetype eq 'tex') { + $result = &Apache::lontexconvert::converted(\$filecontents, + $env{'form.texengine'}); + if ($env{'form.return_only_error_and_warning_counts'}) { + $result = "$errorcount:$warningcount"; + } + } else { + $result = $filecontents; + } + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['rawmode']); + if ($env{'form.rawmode'}) { $result = $filecontents; } + if (($filetype ne 'html') && + (!$env{'form.return_only_error_and_warning_counts'})) { + my $nochgview = 1; + my $controls = ''; + if ($env{'request.state'} eq 'construct') { + $controls = &Apache::loncommon::head_subbox( + &Apache::loncommon::CSTR_pageheader() + .&Apache::londefdef::edit_controls($nochgview)); + } + if ($filetype ne 'sty' && $filetype ne 'tex') { + $result =~ s//>/g; + $result = ''. + '
'.$result.
+                              '
'; + } + my $brcrum; + if ($env{'request.state'} eq 'construct') { + $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri), + 'text' => 'Construction Space'}, + {'href' => '', + 'text' => $breadcrumbtext}]; + } else { + $brcrum = ''; # FIXME: Where are we? + } + my %options = ('bread_crumbs' => $brcrum, + 'bgcolor' => '#FFFFFF'); + $result = + &Apache::loncommon::start_page(undef,undef,\%options) + .$controls + .$result + .&Apache::loncommon::end_page(); + } + } } - } # # Edit action? Insert editing commands # - unless ($ENV{'request.state'} eq 'published') { - if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) { - my $displayfile=$request->uri; - $displayfile=~s/^\/[^\/]*//; - $result='

'.$displayfile. - '

'; - $result=&inserteditinfo($result,$filecontents); + unless ($env{'request.state'} eq 'published') { + if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'}))) + { + my $displayfile=$request->uri; + $displayfile=~s/^\/[^\/]*//; + + my ($edit_info, $add_to_onload, $add_to_onresize)= + &inserteditinfo($filecontents,$filetype,$displayfile); + + my %options = + ('add_entries' => + {'onresize' => $add_to_onresize, + 'onload' => $add_to_onload, }); + my $header; + if ($env{'request.state'} eq 'construct') { + $options{'bread_crumbs'} = [{ + 'href' => &Apache::loncommon::authorspace($request->uri), + 'text' => 'Construction Space'}, + {'href' => '', + 'text' => $breadcrumbtext}]; + $header = &Apache::loncommon::head_subbox( + &Apache::loncommon::CSTR_pageheader()); + } + my $js = + &Apache::edit::js_change_detection(). + &Apache::loncommon::resize_textarea_js(); + my $start_page = &Apache::loncommon::start_page(undef,$js, + \%options); + $result = $start_page + .$header + .&Apache::lonxml::message_location() + .$edit_info + .&Apache::loncommon::end_page(); + } } - } + if ($filetype eq 'html') { &writeallows($request->uri); } - writeallows($request->uri); - - $request->print($result); + &Apache::lonxml::add_messages(\$result); + $request->print($result); + + return OK; +} - return OK; +sub display_title { + my $result; + if ($env{'request.state'} eq 'construct') { + my $title=&Apache::lonnet::gettitle(); + if (!defined($title) || $title eq '') { + $title = $env{'request.filename'}; + $title = substr($title, rindex($title, '/') + 1); + } + $result = ""; + } + return $result; } sub debug { - if ($Apache::lonxml::debug eq 1) { - $|=1; - print('DEBUG:'.&HTML::Entities::encode($_[0])."\n"); - } + if ($Apache::lonxml::debug eq "1") { + $|=1; + my $request=$Apache::lonxml::request; + if (!$request) { + eval { $request=Apache->request; }; + } + if (!$request) { + eval { $request=Apache2::RequestUtil->request; }; + } + $request->print('
DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."
\n"); + #&Apache::lonnet::logthis($_[0]); + } +} + +sub show_error_warn_msg { + if (($env{'request.filename'} eq + $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') && + (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) { + return 1; + } + return (($Apache::lonxml::debug eq 1) || + ($env{'request.state'} eq 'construct') || + ($Apache::lonhomework::browse eq 'F' + && + $env{'form.show_errors'} eq 'on')); } sub error { - $errorcount++; - if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) { - # 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 (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
-      my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
-      foreach (keys %users) {
-	my ($user,$domain) = split(/:/, $_);
-	&Apache::lonmsg::user_normal_msg($user,$domain,
-        "Error [$declutter]",join('
',@_));
-      }
+    my @errors = @_;
+
+    $errorcount++;
+
+    $Apache::lonxml::internal_error=1;
+
+    if (defined($Apache::inputtags::part)) {
+	if ( @Apache::inputtags::response ) {
+	    push(@errors,
+		 &mt("This error occurred while processing response [_1] in part [_2]",
+		     $Apache::inputtags::response[-1],
+		     $Apache::inputtags::part));
+	} else {
+	    push(@errors,
+		 &mt("This error occurred while processing part [_1]",
+		     $Apache::inputtags::part));
+	}
     }
 
-    #FIXME probably shouldn't have me get everything forever.
-    &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",join('
',@_));
-    #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
-  }
+    if ( &show_error_warn_msg() ) {
+	# If printing in construction space, put the error inside 

+	push(@Apache::lonxml::error_messages,
+	     $Apache::lonxml::warnings_error_header
+             .'
'
+             .''.&mt('ERROR:').' '.join("
\n",@errors)
+             ."
\n");
+	$Apache::lonxml::warnings_error_header='';
+    } else {
+	my $errormsg;
+	my ($symb)=&Apache::lonnet::symbread();
+	if ( !$symb ) {
+	    #public or browsers
+	    $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
+	}
+	my $host=$Apache::lonnet::perlvar{'lonHostID'};
+	push(@errors,
+        &mt("The error occurred on host [_1]",
+             "$host"));
+
+	my $msg = join('
', @errors);
+
+	#notify author
+	&Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
+	#notify course
+	if ( $symb && $env{'request.course.id'} ) {
+	    my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
+	    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+	    my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
+	    my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
+            my $baseurl = &Apache::lonnet::clutter($declutter);
+	    my @userlist;
+	    foreach (keys %users) {
+		my ($user,$domain) = split(/:/, $_);
+		push(@userlist,"$user\@$domain");
+		my $key=$declutter.'_'.$user.'_'.$domain;
+		my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
+						      [$key],
+						      $cdom,$cnum);
+		my $now=time;
+		if ($now-$lastnotified{$key}>86400) {
+                    my $title = &Apache::lonnet::gettitle($symb);
+                    my $sentmessage;
+		    &Apache::lonmsg::user_normal_msg($user,$domain,
+		        "Error [$title]",$msg,'',$baseurl,'','',
+                        \$sentmessage,$symb,$title,1);
+		    &Apache::lonnet::put('nohist_xmlerrornotifications',
+					 {$key => $now},
+					 $cdom,$cnum);		
+		}
+	    }
+	    if ($env{'request.role.adv'}) {
+		$errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
+	    } else {
+		$errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
+	    }
+	}
+	push(@Apache::lonxml::error_messages,"$errormsg 
");
+    }
 }
 
 sub warning {
-  $warningcount++;
-  if ($ENV{'request.state'} eq 'construct') {
-    print "WARNING:".join('
',@_)."
\n";
-  }
+    $warningcount++;
+  
+    if ($env{'form.grade_target'} ne 'tex') {
+	if ( &show_error_warn_msg() ) {
+	    push(@Apache::lonxml::warning_messages,
+		 $Apache::lonxml::warnings_error_header
+                .'
'
+                .&mt('[_1]W[_2]ARNING','','').": ".join('
',@_)
+                ."
\n"
+                );
+	    $Apache::lonxml::warnings_error_header='';
+	}
+    }
+}
+
+sub info {
+    if ($env{'form.grade_target'} ne 'tex' 
+	&& $env{'request.state'} eq 'construct') {
+	push(@Apache::lonxml::info_messages,join('
',@_)."
\n");
+    }
+}
+
+sub message_location {
+    return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
+}
+
+sub add_messages {
+    my ($msg)=@_;
+    my $result=join(' ',
+		    @Apache::lonxml::info_messages,
+		    @Apache::lonxml::error_messages,
+		    @Apache::lonxml::warning_messages);
+    undef(@Apache::lonxml::info_messages);
+    undef(@Apache::lonxml::error_messages);
+    undef(@Apache::lonxml::warning_messages);
+    $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
+    $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
 }
 
 sub get_param {
@@ -1477,16 +1991,19 @@ sub get_param {
     if ( ! $context ) { $context = -1; }
     my $args ='';
     if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
+    if ( ! $Apache::lonxml::usestyle ) {
+	$args=$Apache::lonxml::style_values.$args;
+    }
     if ( ! $args ) { return undef; }
     if ( $case_insensitive ) {
-	if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
+	if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
 	    return &Apache::run::run("{$args;".'return $'.$param.'}',
                                      $safeeval); #'
 	} else {
 	    return undef;
 	}
     } else {
-	if ( $args =~ /my \$\Q$param\E=\"/ ) {
+	if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
 	    return &Apache::run::run("{$args;".'return $'.$param.'}',
                                      $safeeval); #'
 	} else {
@@ -1500,95 +2017,271 @@ sub get_param_var {
   if ( ! $context ) { $context = -1; }
   my $args ='';
   if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
+  if ( ! $Apache::lonxml::usestyle ) {
+      $args=$Apache::lonxml::style_values.$args;
+  }
+  &Apache::lonxml::debug("Args are $args param is $param");
   if ($case_insensitive) {
-      if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
+      if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
 	  return undef;
       }
-  } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { 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);
+  &Apache::lonxml::debug("first run is $value");
+  if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
+      &Apache::lonxml::debug("doing second");
+      my @result=&Apache::run::run("return $value",$safeeval,1);
+      if (!defined($result[0])) {
+	  return $value
+      } else {
+	  if (wantarray) { return @result; } else { return $result[0]; }
+      }
   } else {
     return $value;
   }
 }
 
-sub register_insert {
-  my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
-  my $i;
-  my $tagnum=0;
-  my @order;
-  for ($i=0;$i < $#data; $i++) {
-    my $line = $data[$i];
-    if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
-    if ( $line =~ /TABLE/ ) { last; }
-    my ($tag,$descrip,$color,$function,$show) = split(/,/, $line);
-    if ($tag) {
-      $insertlist{"$tagnum.tag"} = $tag;
-      $insertlist{"$tagnum.description"} = $descrip;
-      $insertlist{"$tagnum.color"} = $color;
-      $insertlist{"$tagnum.function"} = $function;
-      if (!defined($show)) { $show='yes'; }
-      $insertlist{"$tagnum.show"}= $show;
-      $insertlist{"$tag.num"}=$tagnum;
-      $tagnum++;
+sub register_insert_xml {
+    my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
+				     .'/insertlist.xml');
+    my ($tagnum,$in_help)=(0,0);
+    my @alltags;
+    my $tag;
+    while (my $token = $parser->get_token()) {
+	if ($token->[0] eq 'S') {
+	    my $key;
+	    if ($token->[1] eq 'tag') {
+		$tag = $token->[2]{'name'};
+                if (defined($tag)) {
+		    $insertlist{$tagnum.'.tag'} = $tag;
+		    $insertlist{$tag.'.num'}   = $tagnum;
+		    push(@alltags,$tag);
+                }
+	    } elsif ($in_help && $token->[1] eq 'file') {
+		$key = $tag.'.helpfile';
+	    } elsif ($in_help && $token->[1] eq 'description') {
+		$key = $tag.'.helpdesc';
+	    } elsif ($token->[1] eq 'description' ||
+		     $token->[1] eq 'color'       ||
+		     $token->[1] eq 'show'          ) {
+		$key = $tag.'.'.$token->[1];
+	    } elsif ($token->[1] eq 'insert_sub') {
+		$key = $tag.'.function';
+	    } elsif ($token->[1] eq 'help') {
+		$in_help=1;
+	    } elsif ($token->[1] eq 'allow') {
+		$key = $tag.'.allow';
+	    }
+	    if (defined($key)) {
+		$insertlist{$key} = $parser->get_text();
+		$insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
+	    }
+	} elsif ($token->[0] eq 'E') {
+	    if      ($token->[1] eq 'tag') {
+		undef($tag);
+		$tagnum++;
+	    } elsif ($token->[1] eq 'help') {
+		undef($in_help);
+	    }
+	}
     }
-  }
-  $i++; #skipping TABLE line
-  $tagnum = 0;
-  for (;$i < $#data;$i++) {
-    my $line = $data[$i];
-    my ($mnemonic,@which) = split(/ +/,$line);
-    my $tag = $insertlist{"$tagnum.tag"};
-    for (my $j=0;$j <=$#which;$j++) {
-      if ( $which[$j] eq 'Y' ) {
-	if ($insertlist{"$j.show"} ne 'no') {
-	  push(@{ $insertlist{"$tag.which"} },$j);
+    
+    # parse the allows and ignore tags set to no
+    foreach my $tag (@alltags) {	
+        next if (!exists($insertlist{$tag.'.allow'}));
+	my $allow =  $insertlist{$tag.'.allow'};
+       	foreach my $element (split(',',$allow)) {
+	    $element =~ s/(^\s*|\s*$ )//gx;
+	    if (!exists($insertlist{$element.'.show'})
+                || $insertlist{$element.'.show'} ne 'no') {
+		push(@{ $insertlist{$tag.'.which'} },$element);
+	    }
 	}
-      }
     }
-    $tagnum++;
-  }
+}
+
+sub register_insert {
+    return ®ister_insert_xml(@_);
+#    &dump_insertlist('2');
+}
+
+sub dump_insertlist {
+    my ($ext) = @_;
+    open(XML,">/tmp/insertlist.xml.$ext");
+    print XML ("");
+    my $i=0;
+
+    while (exists($insertlist{"$i.tag"})) {
+	my $tag = $insertlist{"$i.tag"};
+	print XML ("
+\t");
+	if (defined($insertlist{"$tag.description"})) {
+	    print XML ("
+\t\t".$insertlist{"$tag.description"}."");
+	}
+	if (defined($insertlist{"$tag.color"})) {
+	    print XML ("
+\t\t".$insertlist{"$tag.color"}."");
+	}
+	if (defined($insertlist{"$tag.function"})) {
+	    print XML ("
+\t\t".$insertlist{"$tag.function"}."");
+	}
+	if (defined($insertlist{"$tag.show"})
+	    && $insertlist{"$tag.show"} ne 'yes') {
+	    print XML ("
+\t\t".$insertlist{"$tag.show"}."");
+	}
+	if (defined($insertlist{"$tag.helpfile"})) {
+	    print XML ("
+\t\t
+\t\t\t".$insertlist{"$tag.helpfile"}."");
+	    if ($insertlist{"$tag.helpdesc"} ne '') {
+		print XML ("
+\t\t\t".$insertlist{"$tag.helpdesc"}."");
+	    }
+	    print XML ("
+\t\t");
+	}
+	if (defined($insertlist{"$tag.which"})) {
+	    print XML ("
+\t\t".join(',',sort(@{ $insertlist{"$tag.which"} }))."");
+	}
+	print XML ("
+\t");
+	$i++;
+    }
+    print XML ("\n\n");
+    close(XML);
 }
 
 sub description {
-  my ($token)=@_;
-  my $tagnum;
-  my $tag=$token->[1];
-  foreach my $namespace (reverse @Apache::lonxml::namespace) {
-    my $testtag=$namespace.'::'.$tag;
-    $tagnum=$insertlist{"$testtag.num"};
-    if (defined($tagnum)) { last; }
-  }
-  if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
-  return $insertlist{$tagnum.'.description'};
+    my ($token)=@_;
+    my $tag = &get_tag($token);
+    return $insertlist{$tag.'.description'};
 }
 
-# ----------------------------------------------------------------- whichuser
-# returns a list of $symb, $courseid, $domain, $name that is correct for
-# calls to lonnet functions for this setup.
-# - looks for form.grade_ parameters
-sub whichuser {
-  my ($symb,$courseid,$domain,$name);
-  if (defined($ENV{'form.grade_symb'})) {
-    my $tmp_courseid=$ENV{'form.grade_courseid'};
-    my $allowed=&Apache::lonnet::allowed('mgr',$tmp_courseid);
-    if ($allowed) {
-      $symb=$ENV{'form.grade_symb'};
-      $courseid=$ENV{'form.grade_courseid'};
-      $domain=$ENV{'form.grade_domain'};
-      $name=$ENV{'form.grade_username'};
+# Returns a list containing the help file, and the description
+sub helpinfo {
+    my ($token)=@_;
+    my $tag = &get_tag($token);
+    return ($insertlist{$tag.'.helpfile'}, $insertlist{$tag.'.helpdesc'});
+}
+
+sub get_tag {
+    my ($token)=@_;
+    my $tagnum;
+    my $tag=$token->[1];
+    foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
+	my $testtag = $namespace.'::'.$tag;
+	$tagnum = $insertlist{"$testtag.num"};
+	last if (defined($tagnum));
     }
-  } else {
-    $symb=&Apache::lonnet::symbread();
-    $courseid=$ENV{'request.course.id'};
-    $domain=$ENV{'user.domain'};
-    $name=$ENV{'user.name'};
-  }
-  return ($symb,$courseid,$domain,$name);
+    if (!defined($tagnum)) {
+	$tagnum = $Apache::lonxml::insertlist{"$tag.num"};
+    }
+    return $insertlist{"$tagnum.tag"};
+}
+
+############################################################
+#                                           PDF-FORM-METHODS
+
+=pod
+
+=item &print_pdf_radiobutton(fieldname, value)
+
+Returns a latexline to generate a PDF-Form-Radiobutton.
+Note: Radiobuttons with equal names are automaticly grouped 
+      in a selection-group.
+
+$fieldname: PDF internalname of the radiobutton(group)
+$value:     Value of radiobutton
+
+=cut
+sub print_pdf_radiobutton {
+    my ($fieldname, $value) = @_;
+    return '\radioButton[\symbolchoice{circle}]{'
+           .$fieldname.'}{10bp}{10bp}{'.$value.'}';
+}
+
+
+=pod
+
+=item &print_pdf_start_combobox(fieldname)
+
+Starts a latexline to generate a PDF-Form-Combobox with text.
+
+$fieldname: PDF internal name of the Combobox
+
+=cut
+sub print_pdf_start_combobox {
+    my $result;
+    my ($fieldName) = @_;
+    $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
+    $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; # 
+
+    return $result;
+}
+
+
+=pod
+
+=item &print_pdf_add_combobox_option(options)
+
+Generates a latexline to add Options to a PDF-Form-ComboBox.
+
+$option: PDF internal name of the Combobox-Option
+
+=cut
+sub print_pdf_add_combobox_option {
+
+    my $result;
+    my ($option) = @_;  
+
+    $result .= '('.$option.')';
+    
+    return $result;
+}
+
+
+=pod
+
+=item &print_pdf_end_combobox(text) {
+
+Returns latexcode to end a PDF-Form-Combobox with text.
+
+=cut
+sub print_pdf_end_combobox {
+    my $result;
+    my ($text) = @_;
+
+    $result .= '}&'.$text."\\\\\n";
+    $result .= '\end{tabularx}' . "\n";
+    $result .= '\hspace{2mm}' . "\n";
+    return $result;
+}
+
+
+=pod
+
+=item &print_pdf_hiddenField(fieldname, user, domain)
+
+Returns a latexline to generate a PDF-Form-hiddenField with userdata.
+
+$fieldname label for hiddentextfield
+$user:    name of user
+$domain:  domain of user
+
+=cut
+sub print_pdf_hiddenfield {
+    my $result;
+    my ($fieldname, $user, $domain) = @_;
+
+    $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
+
+    return $result;
 }
 
 1;
 __END__
 
-