--- loncom/xml/lonxml.pm 2003/09/21 21:40:06 1.280 +++ loncom/xml/lonxml.pm 2005/03/10 19:10:31 1.362 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # XML Parser Module # -# $Id: lonxml.pm,v 1.280 2003/09/21 21:40:06 www Exp $ +# $Id: lonxml.pm,v 1.362 2005/03/10 19:10:31 matthew Exp $ # # Copyright Michigan State University Board of Trustees # @@ -36,30 +36,11 @@ # 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 -# + 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 $warningcount @htmlareafields); use strict; use HTML::LCParser(); use HTML::TreeBuilder(); @@ -70,7 +51,7 @@ use Math::Cephes(); use Math::Random(); use Opcode(); use POSIX qw(strftime); - +use Time::HiRes qw( gettimeofday tv_interval ); sub register { my ($space,@taglist) = @_; @@ -96,6 +77,7 @@ use Apache::style(); use Apache::run(); use Apache::londefdef(); use Apache::scripttag(); +use Apache::languagetags(); use Apache::edit(); use Apache::inputtags(); use Apache::outputtags(); @@ -140,9 +122,6 @@ $evaluate = 1; # stores the list of active tag namespaces @namespace=(); -# if 0 all high ASCII characters will be encoded into HTML Entities -$prevent_entity_encode=0; - # has the dynamic menu been updated to know about this resource $Apache::lonxml::registered=0; @@ -160,29 +139,59 @@ $Apache::lonxml::usestyle=1; $Apache::lonxml::style_values=''; $Apache::lonxml::style_end_values=''; +#array of ssi calls that need to occur after we are done parsing +@Apache::lonxml::ssi_info=(); + +#should we do the postag variable interpolation +$Apache::lonxml::post_evaluate=1; + +#a header message to emit in the case of any generated warning or errors +$Apache::lonxml::warnings_error_header=''; + sub xmlbegin { - my $output=''; - if ($ENV{'browser.mathml'}) { - $output='' - .'' - .']>' + my ($style)=@_; + my $output=''; + @htmlareafields=(); + if ($ENV{'browser.mathml'}) { + $output='' + #.''."\n" +# .'] >' + .'' .''; - } else { - $output=''; - } - return $output; + .'xmlns="http://www.w3.org/1999/xhtml">'; + } else { + $output=''; + } + if ($style eq 'encode') { + $output=&HTML::Entities::encode($output,'<>&"'); + } + return $output; } sub xmlend { + my ($target,$parser)=@_; my $mode='xml'; my $status='OPEN'; if ($Apache::lonhomework::parsing_a_problem) { $mode='problem'; $status=$Apache::inputtags::status[-1]; } - return &Apache::lonfeedback::list_discussion().''; + 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 ''; + } else { + return $discussion.&Apache::loncommon::endbodytag(); + } } sub tokeninputfield { @@ -274,23 +283,23 @@ sub printtokenheader { my %idhash=&Apache::lonnet::idrget($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().'
'; + &mt('Checked out for').' '.$plainname. + '
'.&mt('User').': '.$tuname.' at '.$tudom. + '
'.&mt('ID').': '.$idhash{$tuname}. + '
'.&mt('CourseID').': '.$tcrsid. + '
'.&mt('Course').': '.$ENV{'course.'.$tcrsid.'.description'}. + '
'.&mt('DocID').': '.$token. + '
'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'
'; } else { return $token; } } -sub fontsettings() { +sub fontsettings { my $headerstring=''; if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) { $headerstring.= - ''; + ''; } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) { $headerstring.= ''; @@ -313,6 +322,7 @@ sub xmlparse { &Apache::inputtags::initialize_inputtags(); &Apache::outputtags::initialize_outputtags(); &Apache::edit::initialize_edit(); + &Apache::londefdef::initialize_londefdef(); # # do we have a course style file? @@ -322,13 +332,22 @@ sub xmlparse { 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); + 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(); my @pars = (); @@ -345,57 +364,75 @@ 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($ENV{'request.uri'}); } + &do_registered_ssi(); if ($Apache::lonxml::counter_changed) { &store_counter() } + if ($ENV{'form.return_only_error_and_warning_counts'}) { + return "$errorcount:$warningcount"; + } return $finaloutput; } sub htmlclean { my ($raw,$full)=@_; +# Take care of CRLF etc - my $tree = HTML::TreeBuilder->new; - $tree->ignore_unknown(0); - - $tree->parse($raw); - - my $output= $tree->as_HTML(undef,' '); - - $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis; - $output=~s/\<\/(br|hr|img|meta|allow)\>//gis; + $raw=~s/\r\f/\n/gs; $raw=~s/\f\r/\n/gs; + $raw=~s/\r\n/\n/gs; $raw=~s/\n\r/\n/gs; + $raw=~s/\f/\n/gs; $raw=~s/\r/\n/gs; + $raw=~s/\&\#10\;/\n/gs; $raw=~s/\&\#13\;/\n/gs; + +# Generate empty tags, remove wrong end tags + $raw=~s/\<(br|hr|img|meta|allow|basefont)([^\>\/]*?)\>/\<$1$2 \/\>/gis; + $raw=~s/\<\/(br|hr|img|meta|allow|basefont)\>//gis; unless ($full) { - $output=~s/\<[\/]*(body|head|html)\>//gis; + $raw=~s/\<[\/]*(body|head|html)\>//gis; } - - $tree = $tree->delete; - - return $output; +# Make standard tags lowercase + foreach ('html','body','head','meta','h1','h2','h3','h4','b','i','m', + 'table','tr','td','th','p','br','hr','img','embed','font', + 'a','strong','center','title','basefont','li','ol','ul', + 'input','select','form','option','script','pre') { + $raw=~s/\<$_\s*\>/\<$_\>/gis; + $raw=~s/\<\/$_\s*\>/<\/$_\>/gis; + $raw=~s/\<$_\s([^\>]*)\>/<$_ $1\>/gis; + } + return $raw; } sub latex_special_symbols { my ($string,$where)=@_; if ($where eq 'header') { $string =~ s/(\\|_|\^)/ /g; - $string =~ s/(\$|%|\#|&|\{|\})/\\$1/g; + $string =~ s/(\$|%|\{|\})/\\$1/g; $string =~ s/_/ /g; + $string=&Apache::lonprintout::character_chart($string); + # any & or # leftover should be safe to just escape + $string=~s/([^\\])\&/$1\\\&/g; + $string=~s/([^\\])\#/$1\\\#/g; } else { - $string=~s/\\ /\\char92 /g; - $string=~s/\^/\\char94 /g; - $string=~s/\~/\\char126 /g; - $string=~s/(&[^A-Za-z\#])/\\$1/g; - $string=~s/([^&])\#/$1\\#/g; - $string=~s/(\$|_|{|})/\\$1/g; - $string=~s/\\char92 /\\texttt{\\char92}/g; - $string=~s/(>|<)/\$$1\$/g; #more or less - if ($string=~m/\d%/) {$string =~ s/(\d)%/$1\\%/g;} #percent after digit - if ($string=~m/\s%/) {$string =~ s/(\s)%/$1\\%/g;} #percent after space - if ($string eq '%.') {$string = '\%.';} #percent at the end of statement + $string=~s/\\/\\ensuremath{\\backslash}/g; + $string=~s/([^\\]|^)\%/$1\\\%/g; + $string=~s/([^\\]|^)\$/$1\\\$/g; + $string=~s/([^\\])\_/$1\\_/g; + $string=~s/\$\$/\$\\\$/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/([^\\]|^)\&/$1\\\&/g; + $string=~s/([^\\]|^)\#/$1\\\#/g; + $string=~s/\|/\$\\mid\$/g; +#single { or } How to escape? } return $string; } @@ -458,7 +495,7 @@ sub inner_xmlparse { #clear out any tags that didn't end while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) { my $lasttag=$$stack[-1]; - if ($token->[1] =~ /^$lasttag$/i) { + if ($token->[1] =~ /^\Q$lasttag\E$/i) { &Apache::lonxml::warning('Using tag </'.$token->[1].'> on line '.$token->[3].' as end tag to <'.$$stack[-1].'>'); last; } else { @@ -473,7 +510,7 @@ sub inner_xmlparse { &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:"); } #evaluate variable refs in result - if ($result ne "") { + if ($Apache::lonxml::post_evaluate &&$result ne "") { my $extras; if (!$Apache::lonxml::usestyle) { $extras=$Apache::lonxml::style_values; @@ -484,6 +521,8 @@ sub inner_xmlparse { $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') ) { #Style file definitions should be correct if ($target eq 'tex' && ($Apache::lonxml::usestyle)) { @@ -491,10 +530,6 @@ sub inner_xmlparse { } } - # 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 { @@ -524,6 +559,10 @@ sub inner_xmlparse { 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=''; @@ -556,6 +595,10 @@ 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)) { @@ -596,6 +639,7 @@ sub setup_globals { my ($request,$target)=@_; $Apache::lonxml::request=$request; $Apache::lonxml::registered = 0; + @Apache::lonxml::htmlareafields=(); $errorcount=0; $warningcount=0; $Apache::lonxml::default_homework_loaded=0; @@ -603,6 +647,9 @@ sub setup_globals { &init_counter(); @Apache::lonxml::pwd=(); @Apache::lonxml::extlinks=(); + @Apache::lonxml::ssi_info=(); + $Apache::lonxml::post_evaluate=1; + $Apache::lonxml::warnings_error_header=''; if ($target eq 'meta') { $Apache::lonxml::redirection = 0; $Apache::lonxml::metamode = 1; @@ -646,11 +693,14 @@ sub init_safespace { $safeeval->permit("entereval"); $safeeval->permit(":base_math"); $safeeval->permit("sort"); + $safeeval->permit("time"); $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(\&Math::Cephes::asin,$safeeval,'&asin'); $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos'); $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan'); @@ -722,16 +772,21 @@ 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::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR'); + $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG'); + $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange'); #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.';'; + $safeinit .= ';$external::randomseed="'.$rndseed.'";'; &Apache::lonxml::debug("Setting rndseed to $rndseed"); &Apache::run::run($safeinit,$safeeval); + } sub default_homework_load { @@ -746,18 +801,48 @@ 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 debuging information:".join ":",caller); + return ''; + } + $Apache::lonxml::redirection--; + if (!$Apache::lonxml::redirection) { + $Apache::lonxml::metamode=$metamode_was; + } + pop @Apache::lonxml::outputstack; } sub end_tag { @@ -773,6 +858,8 @@ sub initdepth { $Apache::lonxml::olddepth=-1; } +my @timers; +my $lasttime; sub increasedepth { my ($token) = @_; $Apache::lonxml::depth++; @@ -780,8 +867,15 @@ sub increasedepth { if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) { $Apache::lonxml::olddepth=$Apache::lonxml::depth; } + my $time; + if ($Apache::lonxml::debug eq "1") { + push(@timers,[&gettimeofday()]); + $time=&tv_interval($lasttime); + $lasttime=[&gettimeofday()]; + } + my $spacing=' 'x($Apache::lonxml::depth-1); my $curdepth=join('_',@Apache::lonxml::depthcounter); - &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"); + &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : \n"); #print "
s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n"; } @@ -796,37 +890,44 @@ sub decreasedepth { &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file.")); $Apache::lonxml::depth='-1'; } + my ($timer,$time); + if ($Apache::lonxml::debug eq "1") { + $timer=pop(@timers); + $time=&tv_interval($lasttime); + $lasttime=[&gettimeofday()]; + } + my $spacing=' 'x$Apache::lonxml::depth; my $curdepth=join('_',@Apache::lonxml::depthcounter); - &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"); + &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1] : $time : ".&tv_interval($timer)."\n"); #print "
e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n"; } 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 = $$pars[-1]->get_token) { + if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { + $result.=$token->[1]; + } elsif ($token->[0] eq 'PI') { + $result.=$token->[2]; + } elsif ($token->[0] eq 'S') { + $result.=$token->[4]; + } elsif ($token->[0] eq 'E') { + $result.=$token->[2]; + } + if ($result =~ /\Q$tag\E/is) { + ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is; + #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2); + #&Apache::lonxml::debug('Result is :'.$1); + $redo=$tag.$redo; + &Apache::lonxml::newparser($pars,\$redo); + last; + } + } + return $result } sub increment_counter { @@ -856,17 +957,13 @@ sub store_counter { sub get_all_text { my($tag,$pars,$style)= @_; - &Apache::lonxml::debug("Got a ".ref($pars)); my $gotfullstack=1; if (ref($pars) ne 'ARRAY') { $gotfullstack=0; $pars=[$pars]; } - &Apache::lonxml::debug("Got a ".ref($style)); if (ref($style) ne 'HASH') { $style={}; - } else { - &Apache::lonhomework::showhash(%$style); } my $depth=0; my $token; @@ -883,14 +980,14 @@ sub get_all_text { } elsif ($token->[0] eq 'PI') { $result.=$token->[2]; } elsif ($token->[0] eq 'S') { - if ($token->[1] =~ /^$tag$/i) { $depth++; } - if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; } - if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; } + if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; } + if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; } + if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; } $result.=$token->[4]; } elsif ($token->[0] eq 'E') { - if ( $token->[1] =~ /^$tag$/i) { $depth--; } + if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; } #skip sending back the last end tag - if ($depth == 0 && exists($$style{'/'.$token->[1]})) { + if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) { my $string= ''. $$style{'/'.$token->[1]}. @@ -917,7 +1014,7 @@ sub get_all_text { #never found the end tag ran out of text, throw error send back blank &error('Never found end tag for <'.$tag. '> current string 
'.
-		   &HTML::Entities::encode($result).
+		   &HTML::Entities::encode($result,'<>&"').
 		   '
'); if ($gotfullstack) { my $newstring=''.$result; @@ -935,13 +1032,13 @@ sub get_all_text { } elsif ($token->[0] eq 'PI') { $result.=$token->[2]; } elsif ($token->[0] eq 'S') { - if ( $token->[1] =~ /^$tag$/i) { + if ( $token->[1] =~ /^\Q$tag\E$/i) { $$pars[-1]->unget_token($token); last; } else { $result.=$token->[4]; } - if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/i) { $Apache::lonxml::usestyle=1; } - if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/i) { $Apache::lonxml::usestyle=0; } + if ($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]; } @@ -974,6 +1071,8 @@ sub parstring { unless ($_=~/\W/) { my $val=$token->[2]->{$_}; $val =~ s/([\%\@\\\"\'])/\\$1/g; + $val =~ s/(\$[^{a-zA-Z_])/\\$1/g; + $val =~ s/(\$)$/\\$1/; #if ($val =~ m/^[\%\@]/) { $val="\\".$val; } $temp .= "my \$$_=\"$val\";"; } @@ -998,6 +1097,19 @@ sub writeallows { &Apache::lonnet::appenv(%httpref); } +sub register_ssi { + my ($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); + } +} # # Afterburner handles anchors, highlights and links # @@ -1010,7 +1122,7 @@ sub afterburn { my $anchorname=$_; my $matchthis=$anchorname; $matchthis=~s/\_+/\\s\+/g; - $result=~s/($matchthis)/\$1\<\/font\>/gs; + $result=~s/(\Q$matchthis\E)/\$1\<\/font\>/gs; } } if ($ENV{'form.link'}) { @@ -1018,14 +1130,14 @@ sub afterburn { my ($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'}; my $matchthis=$anchorname; $matchthis=~s/\_+/\\s\+/g; - $result=~s/($matchthis)/\$1\<\/a\>/s; + $result=~s/(\Q$matchthis\E)/\$1\<\/a\>/s; $result.=(<<"ENDSCRIPT"); +FULLPAGE + } else { + $initialize.=(< +$addbuttons + function initDocument() { + } + +FULLPAGE + } + $result=~s/\]*)\>/\/i; + $xml_help=&Apache::loncommon::helpLatexCheatsheet(); } my $cleanbut = ''; if ($filetype eq 'html') { @@ -1097,21 +1238,25 @@ sub inserteditinfo { 'ed' => 'Edit'); my $buttons=(< - + + BUTTONS + $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont'); + $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont'); my $editfooter=(< -
+ $xml_help $buttons
- +
$buttons
$titledisplay + ENDFOOTER # $result=~s/(\]*\>)/$1$editheader/is; $result=~s/(\<\/body\>)/$editfooter/is; @@ -1158,6 +1303,8 @@ sub handler { &Apache::loncommon::content_type($request,'text/html'); } &Apache::loncommon::no_cache($request); + $request->set_last_modified(&Apache::lonnet::metadata($request->uri, + 'lastrevisiondate')); $request->send_http_header; return OK if $request->header_only; @@ -1176,7 +1323,10 @@ sub handler { unless ($ENV{'request.state'} eq 'published') { if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) { if (&storefile($file,$ENV{'form.filecont'})) { - $request->print("Updated: ". strftime("%d %b %H:%M:%S",localtime())." "); + &Apache::lonxml::info("". + &mt('Updated').": ". + &Apache::lonlocal::locallocaltime(time). + " "); } } } @@ -1184,17 +1334,19 @@ sub handler { my $result = ''; my $filecontents=&Apache::lonnet::getfile($file); if ($filecontents eq -1) { + my $bodytag=&Apache::loncommon::bodytag('File Error'); + my $fnf=&mt('File not found'); $result=(< -File not found +$fnf - -File not found: $file +$bodytag +$fnf: $file ENDNOTFOUND - $filecontents=''; + $filecontents=''; if ($ENV{'request.state'} ne 'published') { if ($filetype eq 'sty') { $filecontents=&createnewsty(); @@ -1205,6 +1357,10 @@ ENDNOTFOUND } } else { unless ($ENV{'request.state'} eq 'published') { + if ($filecontents=~/BEGIN LON-CAPA Internal/) { + &Apache::lonxml::error(&mt('This file appears to be a rendering of a Lon-CAPA resource. If this is correct, this resource will act very oddly and incorrectly.')); + } + if ($ENV{'form.attemptclean'}) { $filecontents=&htmlclean($filecontents,1); } @@ -1226,7 +1382,13 @@ ENDNOTFOUND if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) { my $displayfile=$request->uri; $displayfile=~s/^\/[^\/]*//; - $result='

'.$displayfile. + my $bodytag=''; + if ($ENV{'environment.remote'} eq 'off') { + $bodytag=&Apache::loncommon::bodytag(); + } + $result=''.$bodytag. + &Apache::lonxml::message_location().'

'. + $displayfile. '

'; $result=&inserteditinfo($result,$filecontents,$filetype); } @@ -1234,7 +1396,7 @@ ENDNOTFOUND if ($filetype eq 'html') { writeallows($request->uri); } - + &Apache::lonxml::add_messages(\$result); $request->print($result); return OK; @@ -1254,46 +1416,102 @@ sub display_title { } 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) { $request=Apache->request; } + $request->print('
DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."
\n"); + #&Apache::lonnet::logthis($_[0]); + } +} + +sub show_error_warn_msg { + if ($ENV{'request.filename'} eq '/home/httpd/html/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('
',@_));
-      }
+    $errorcount++;
+    if ( &show_error_warn_msg() ) {
+	# If printing in construction space, put the error inside 

+	push(@Apache::lonxml::error_messages,
+	     $Apache::lonxml::warnings_error_header.
+	     "ERROR:".join("
\n",@_)."
\n");
+	$Apache::lonxml::warnings_error_header='';
+    } else {
+	my $errormsg;
+	my ($symb)=&Apache::lonnet::symbread();
+	if ( !$symb ) {
+	    #public or browsers
+	    $errormsg=&mt("An error occured while processing this resource. The author has been notified.");
+	} 
+	#notify author
+	&Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('
',@_));
+	#notify course
+	if ( $symb && $ENV{'request.course.id'} ) {
+	    my (undef,%users)=&Apache::lonfeedback::decide_receiver(undef,0,1,1,1);
+	    my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'});
+	    my @userlist;
+	    foreach (keys %users) {
+		my ($user,$domain) = split(/:/, $_);
+		push(@userlist,"$user\@$domain");
+		&Apache::lonmsg::user_normal_msg($user,$domain,
+						 "Error [$declutter]",join('
',@_));
+	    }
+	    if ($ENV{'request.role.adv'}) {
+		$errormsg=&mt("An error occured while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
+	    } else {
+		$errormsg=&mt("An error occured while processing this resource. The instructor has been notified.");
+	    }
+	}
+	push(@Apache::lonxml::error_messages,"$errormsg 
");
     }
-
-    #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]);
-  }
 }
 
 sub warning {
-  $warningcount++;
+    $warningcount++;
   
-  if ($ENV{'form.grade_target'} ne 'tex') {
-      if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
-        print "WARNING:".join('
',@_)."
\n";
-      }
-  }
+    if ($ENV{'form.grade_target'} ne 'tex') {
+	if ( &show_error_warn_msg() ) {
+	    my $request=$Apache::lonxml::request;
+	    if (!$request) { $request=Apache->request; }
+	    push(@Apache::lonxml::warning_messages,
+		 $Apache::lonxml::warnings_error_header.
+		 "WARNING:".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 {
@@ -1301,6 +1519,9 @@ sub get_param {
     if ( ! $context ) { $context = -1; }
     my $args ='';
     if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
+    if ( ! $Apache::lonxml::usestyle ) {
+	$args=$Apache::lonxml::style_values.$args;
+    }
     if ( ! $args ) { return undef; }
     if ( $case_insensitive ) {
 	if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
@@ -1324,6 +1545,9 @@ sub get_param_var {
   if ( ! $context ) { $context = -1; }
   my $args ='';
   if ( $#$parstack > (-2-$context) ) { $args=$$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)) {
@@ -1332,7 +1556,7 @@ sub get_param_var {
   } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
   my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
   &Apache::lonxml::debug("first run is $value");
-  if ($value =~ /^[\$\@\%]\w+$/) {
+  if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
       &Apache::lonxml::debug("doing second");
       my @result=&Apache::run::run("return $value",$safeeval,1);
       if (!defined($result[0])) {
@@ -1420,29 +1644,36 @@ sub whichuser {
   my ($passedsymb)=@_;
   my ($symb,$courseid,$domain,$name,$publicuser);
   if (defined($ENV{'form.grade_symb'})) {
-    my $tmp_courseid=$ENV{'form.grade_courseid'};
-    my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
-    if ($allowed) {
-      $symb=$ENV{'form.grade_symb'};
-      $courseid=$ENV{'form.grade_courseid'};
-      $domain=$ENV{'form.grade_domain'};
-      $name=$ENV{'form.grade_username'};
-    }
-  } else {
-      if (!$passedsymb) {
-          $symb=&Apache::lonnet::symbread();
-      } else {
-          $symb=$passedsymb;
+      my ($tmp_courseid)=
+	  &Apache::loncommon::get_env_multiple('form.grade_courseid');
+      my $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid);
+      if (!$allowed && 
+	  exists($ENV{'request.course.sec'}) && 
+	  $ENV{'request.course.sec'} !~ /^\s*$/) {
+	  $allowed=&Apache::lonnet::allowed('vgr',$tmp_courseid.
+					    '/'.$ENV{'request.course.sec'});
       }
-      $courseid=$ENV{'request.course.id'};
-      $domain=$ENV{'user.domain'};
-      $name=$ENV{'user.name'};
-      if ($name eq 'public' && $domain eq 'public') {
-	  if (!defined($ENV{'form.username'})) {
-	      $ENV{'form.username'}.=time.rand(10000000);
-	  }
-	  $name.=$ENV{'form.username'};
+      if ($allowed) {
+	  ($symb)=&Apache::loncommon::get_env_multiple('form.grade_symb');
+	  $courseid=$tmp_courseid;
+	  ($domain)=&Apache::loncommon::get_env_multiple('form.grade_domain');
+	  ($name)=&Apache::loncommon::get_env_multiple('form.grade_username');
+	  return ($symb,$courseid,$domain,$name,$publicuser);
+      }
+  }
+  if (!$passedsymb) {
+      $symb=&Apache::lonnet::symbread();
+  } else {
+      $symb=$passedsymb;
+  }
+  $courseid=$ENV{'request.course.id'};
+  $domain=$ENV{'user.domain'};
+  $name=$ENV{'user.name'};
+  if ($name eq 'public' && $domain eq 'public') {
+      if (!defined($ENV{'form.username'})) {
+	  $ENV{'form.username'}.=time.rand(10000000);
       }
+      $name.=$ENV{'form.username'};
   }
   return ($symb,$courseid,$domain,$name,$publicuser);
 }