--- loncom/xml/lonxml.pm 2005/01/28 09:49:52 1.352 +++ loncom/xml/lonxml.pm 2006/12/24 22:13:20 1.434 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # XML Parser Module # -# $Id: lonxml.pm,v 1.352 2005/01/28 09:49:52 albertel Exp $ +# $Id: lonxml.pm,v 1.434 2006/12/24 22:13:20 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -40,7 +40,7 @@ package Apache::lonxml; use vars -qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount @htmlareafields); +qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount); use strict; use HTML::LCParser(); use HTML::TreeBuilder(); @@ -52,6 +52,7 @@ use Math::Random(); use Opcode(); use POSIX qw(strftime); use Time::HiRes qw( gettimeofday tv_interval ); +use Symbol(); sub register { my ($space,@taglist) = @_; @@ -81,12 +82,13 @@ use Apache::languagetags(); use Apache::edit(); use Apache::inputtags(); use Apache::outputtags(); -use Apache::lonnet(); +use Apache::lonnet; use Apache::File(); use Apache::loncommon(); use Apache::lonfeedback(); use Apache::lonmsg(); use Apache::loncacc(); +use Apache::lonmaxima(); use Apache::lonlocal; #================================================== Main subroutine: xmlparse @@ -122,9 +124,6 @@ $evaluate = 1; # stores the list of active tag namespaces @namespace=(); -# has the dynamic menu been updated to know about this resource -$Apache::lonxml::registered=0; - # a pointer the the Apache request object $Apache::lonxml::request=''; @@ -148,39 +147,42 @@ $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 $output=''; - @htmlareafields=(); - if ($ENV{'browser.mathml'}) { - $output='' - .'' - .']>' - .''; - } else { - $output=' -'; - } - return $output; +# Control whether or not LaTeX symbols should be substituted for their +# \ style equivalents...this may be turned off e.g. in an verbatim +# environment. + +$Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on. + +sub enable_LaTeX_substitutions { + $Apache::lonxml::substitute_LaTeX_symbols = 1; +} +sub disable_LaTeX_substitutions { + $Apache::lonxml::substitute_LaTeX_symbols = 0; } sub xmlend { my ($target,$parser)=@_; my $mode='xml'; my $status='OPEN'; - if ($Apache::lonhomework::parsing_a_problem) { + if ($Apache::lonhomework::parsing_a_problem || + $Apache::lonhomework::parsing_a_task ) { $mode='problem'; $status=$Apache::inputtags::status[-1]; } - my $discussion=&Apache::lonfeedback::list_discussion($mode,$status); + 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.''; } + + return $discussion; } sub tokeninputfield { @@ -238,9 +240,9 @@ sub maketoken { $symb=&Apache::lonnet::symbread(); } unless ($tuname) { - $tuname=$ENV{'user.name'}; - $tudom=$ENV{'user.domain'}; - $tcrsid=$ENV{'request.course.id'}; + $tuname=$env{'user.name'}; + $tudom=$env{'user.domain'}; + $tcrsid=$env{'request.course.id'}; } return &Apache::lonnet::checkout($symb,$tuname,$tudom,$tcrsid); @@ -250,7 +252,7 @@ sub printtokenheader { my ($target,$token,$tsymb,$tcrsid,$tudom,$tuname)=@_; unless ($token) { return ''; } - my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); + my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser(); unless ($tsymb) { $tsymb=$symb; } @@ -260,13 +262,7 @@ sub printtokenheader { $tcrsid=$courseid; } - my %reply=&Apache::lonnet::get('environment', - ['firstname','middlename','lastname','generation'], - $tudom,$tuname); - my $plainname=$reply{'firstname'}.' '. - $reply{'middlename'}.' '. - $reply{'lastname'}.' '. - $reply{'generation'}; + my $plainname=&Apache::loncommon::plainname($tuname,$tudom); if ($target eq 'web') { my %idhash=&Apache::lonnet::idrget($tudom,($tuname)); @@ -276,7 +272,7 @@ sub printtokenheader { '
'.&mt('User').': '.$tuname.' at '.$tudom. '
'.&mt('ID').': '.$idhash{$tuname}. '
'.&mt('CourseID').': '.$tcrsid. - '
'.&mt('Course').': '.$ENV{'course.'.$tcrsid.'.description'}. + '
'.&mt('Course').': '.$env{'course.'.$tcrsid.'.description'}. '
'.&mt('DocID').': '.$token. '
'.&mt('Time').': '.&Apache::lonlocal::locallocaltime().'
'; } else { @@ -284,18 +280,6 @@ sub printtokenheader { } } -sub fontsettings() { - my $headerstring=''; - if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) { - $headerstring.= - ''; - } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) { - $headerstring.= - ''; - } - return $headerstring; -} - sub printalltags { my $temp; foreach $temp (sort keys %Apache::lonxml::alltags) { @@ -309,6 +293,7 @@ sub xmlparse { &setup_globals($request,$target); &Apache::inputtags::initialize_inputtags(); + &Apache::bridgetask::initialize_bridgetask(); &Apache::outputtags::initialize_outputtags(); &Apache::edit::initialize_edit(); &Apache::londefdef::initialize_londefdef(); @@ -317,9 +302,9 @@ sub xmlparse { # do we have a course style file? # - if ($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) { foreach my $file (split(',',$bodytext)) { my $location=&Apache::lonnet::filelocation('',$file); @@ -330,8 +315,8 @@ sub xmlparse { } } } - } elsif ($ENV{'construct.style'} && ($ENV{'request.state'} eq 'construct')) { - my $location=&Apache::lonnet::filelocation('',$ENV{'construct.style'}); + } 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, @@ -340,7 +325,7 @@ sub xmlparse { } #&printalltags(); my @pars = (); - my $pwd=$ENV{'request.filename'}; + my $pwd=$env{'request.filename'}; $pwd =~ s:/[^/]*$::; &newparser(\@pars,\$content_file_string,$pwd); @@ -353,64 +338,62 @@ sub xmlparse { my @stack = (); my @parstack = (); - &initdepth; - + &initdepth(); + &init_alarm(); my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars, - $safeeval,\%style_for_target); + $safeeval,\%style_for_target,1); - if ($ENV{'request.uri'}) { - &writeallows($ENV{'request.uri'}); + if (@stack) { + &warning("At end of file some tags were still left unclosed, ". + '<'.join('>, <',reverse(@stack)). + '>'); + } + if ($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); + &clean_safespace($safeeval); - my $output= $tree->as_HTML(undef,' '); - - $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 $output; + if ($env{'form.return_only_error_and_warning_counts'}) { + return "$errorcount:$warningcount"; + } + return $finaloutput; } sub latex_special_symbols { my ($string,$where)=@_; + # + # If e.g. in verbatim mode, then don't substitute. + # but return original string. + # + if (!($Apache::lonxml::substitute_LaTeX_symbols)) { + return $string; + } if ($where eq 'header') { - $string =~ s/(\\|_|\^)/ /g; + $string =~ s/\\/\$\\backslash\$/g; # \ -> $\backslash$ per LaTex line by line pg 10. $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; + $string =~ s/_/\\_/g; # _ -> \_ + $string =~ s/\^/\\\^{}/g; # ^ -> \^{} } else { $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/\\\%|\%/\\\%/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/([^\\]|^)\&/$1\\\&/g; - $string=~s/([^\\]|^)\#/$1\\\#/g; + $string=~s/\\\&|\&/\\\&/g; + $string=~s/\\\#|\#/\\\#/g; $string=~s/\|/\$\\mid\$/g; #single { or } How to escape? } @@ -418,11 +401,12 @@ sub latex_special_symbols { } sub inner_xmlparse { - my ($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') ) { @@ -532,7 +516,12 @@ 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); } @@ -618,8 +607,6 @@ sub callsub { 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; @@ -630,6 +617,7 @@ sub setup_globals { @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; @@ -641,7 +629,7 @@ 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; @@ -670,16 +658,30 @@ sub setup_globals { sub init_safespace { my ($target,$safeeval,$safehole,$safeinit) = @_; + $safeeval->deny_only(':dangerous'); + $safeeval->reval('use Math::Complex;'); + $safeeval->permit_only(":default"); $safeeval->permit("entereval"); $safeeval->permit(":base_math"); $safeeval->permit("sort"); $safeeval->permit("time"); + $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::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::caparesponse::capa_formula_fix,$safeeval, + '&capa_formula_fix'); $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin'); $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos'); @@ -724,6 +726,36 @@ 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'); @@ -754,19 +786,55 @@ sub init_safespace { $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::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'); - +# 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::lonxml::debug("Setting rndseed to $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 { @@ -781,6 +849,28 @@ 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 { if (!$Apache::lonxml::redirection) { @@ -793,7 +883,7 @@ sub startredirection { 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); + &Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller); return ''; } $Apache::lonxml::redirection--; @@ -860,6 +950,16 @@ sub decreasedepth { #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 =~ /(\.|_)/) { + &error(&mt("IDs are not allowed to contain "_" or "."")); + } + 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)= @_; @@ -868,7 +968,11 @@ sub get_all_text_unbalanced { $tag='<'.$tag.'>'; while ($token = $$pars[-1]->get_token) { if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { - $result.=$token->[1]; + if ($token->[0] eq 'T' && $token->[2]) { + $result.='[1].']]>'; + } else { + $result.=$token->[1]; + } } elsif ($token->[0] eq 'PI') { $result.=$token->[2]; } elsif ($token->[0] eq 'S') { @@ -899,8 +1003,11 @@ sub increment_counter { } sub init_counter { - if (defined($ENV{'form.counter'})) { - $Apache::lonxml::counter=$ENV{'form.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; @@ -910,9 +1017,36 @@ sub init_counter { sub store_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 $env{'form.counter'}; + } +} + sub get_all_text { my($tag,$pars,$style)= @_; my $gotfullstack=1; @@ -934,7 +1068,11 @@ sub get_all_text { while (($depth >=0) && ($token = $$pars[-1]->get_token)) { #&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd); if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { - $result.=$token->[1]; + if ($token->[2]) { + $result.='[1].']]>'; + } else { + $result.=$token->[1]; + } } elsif ($token->[0] eq 'PI') { $result.=$token->[2]; } elsif ($token->[0] eq 'S') { @@ -986,7 +1124,11 @@ sub get_all_text { #&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]"); if (($token->[0] eq 'T')||($token->[0] eq 'C')|| ($token->[0] eq 'D')) { - $result.=$token->[1]; + if ($token->[2]) { + $result.='[1].']]>'; + } else { + $result.=$token->[1]; + } } elsif ($token->[0] eq 'PI') { $result.=$token->[2]; } elsif ($token->[0] eq 'S') { @@ -1014,7 +1156,8 @@ sub get_all_text { sub newparser { my ($parser,$contentref,$dir) = @_; push (@$parser,HTML::LCParser->new($contentref)); - $$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 { @@ -1023,26 +1166,38 @@ sub newparser { } sub parstring { - my ($token) = @_; - my $temp=''; - foreach (@{$token->[3]}) { - 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; } - $temp .= "my \$$_=\"$val\";"; + my ($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\""); + } + } + 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); } - } - return $temp; + push(@Apache::lonxml::extlinks,$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; $thisdir=~s/\/[^\/]+$//; @@ -1075,24 +1230,24 @@ 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; $result=~s/(\Q$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; $result=~s/(\Q$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; $result=~s/(\Q$matchthis\E)/\$1\<\/a\>/s; @@ -1122,7 +1277,6 @@ sub createnewhtml { my $title=&mt('Title of document goes here'); my $body=&mt('Body of document goes here'); my $filecontents=(< $title @@ -1156,8 +1310,7 @@ sub inserteditinfo { my $initialize=''; if ($filetype eq 'html') { my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons(); - $initialize=&Apache::lonhtmlcommon::htmlareaheaders(). - &Apache::lonhtmlcommon::spellheader(); + $initialize=&Apache::lonhtmlcommon::spellheader(); if (!&Apache::lonhtmlcommon::htmlareablocked() && &Apache::lonhtmlcommon::htmlareabrowser()) { $initialize.=(<'; - } + my $titledisplay=&display_title(); - my %lt=&Apache::lonlocal::texthash('st' => 'Save this', - 'vi' => 'View', + my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit', + 'vi' => 'Save and View', + 'dv' => 'Discard Edits and View', + 'un' => 'undo', 'ed' => 'Edit'); my $buttons=(< +
BUTTONS $buttons.=&Apache::lonhtmlcommon::spelllink('xmledit','filecont'); - $buttons.=&Apache::lonhtmlcommon::htmlareaselectactive('filecont'); my $editfooter=(< @@ -1209,7 +1362,7 @@ $initialize $xml_help $buttons
- +
$buttons
@@ -1222,24 +1375,24 @@ ENDFOOTER } 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'; } @@ -1253,16 +1406,14 @@ sub handler { my $target=&get_target(); - $Apache::lonxml::debug=$ENV{'user.debug'}; + $Apache::lonxml::debug=$env{'user.debug'}; - if ($ENV{'browser.mathml'}) { - &Apache::loncommon::content_type($request,'text/xml'); - } else { - &Apache::loncommon::content_type($request,'text/html'); - } + &Apache::loncommon::content_type($request,'text/html'); &Apache::loncommon::no_cache($request); - $request->set_last_modified(&Apache::lonnet::metadata($request->uri, - 'lastrevisiondate'); + if ($env{'request.state'} eq 'published') { + $request->set_last_modified(&Apache::lonnet::metadata($request->uri, + 'lastrevisiondate')); + } $request->send_http_header; return OK if $request->header_only; @@ -1278,80 +1429,76 @@ sub handler { # # Edit action? Save file. # - unless ($ENV{'request.state'} eq 'published') { - if (($ENV{'form.savethisfile'}) || ($ENV{'form.attemptclean'})) { - if (&storefile($file,$ENV{'form.filecont'})) { - &Apache::lonxml::info("". - &mt('Updated').": ". - &Apache::lonlocal::locallocaltime(time). - " "); - } + 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'}); } } my %mystyle; my $result = ''; my $filecontents=&Apache::lonnet::getfile($file); if ($filecontents eq -1) { - my $bodytag=&Apache::loncommon::bodytag('File Error'); + my $start_page=&Apache::loncommon::start_page('File Error'); + my $end_page=&Apache::loncommon::end_page(); my $fnf=&mt('File not found'); $result=(< - -$fnf - -$bodytag +$start_page $fnf: $file - - +$end_page ENDNOTFOUND $filecontents=''; - if ($ENV{'request.state'} ne 'published') { + if ($env{'request.state'} ne 'published') { if ($filetype eq 'sty') { $filecontents=&createnewsty(); } else { $filecontents=&createnewhtml(); } - $ENV{'form.editmode'}='Edit'; #force edit mode + $env{'form.editmode'}='Edit'; #force edit mode } } else { - unless ($ENV{'request.state'} eq 'published') { + 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); + &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.')); } # # we are in construction space, see if edit mode forced - &Apache::loncommon::get_unprocessed_cgi - ($ENV{'QUERY_STRING'},['editmode']); + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['editmode']); } - if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) { + &Apache::lonnet::logthis("edit mode is ".$env{'form.editmode'}); + if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) { $result = &Apache::lonxml::xmlparse($request,$target,$filecontents, '',%mystyle); + undef($Apache::lonhomework::parsing_a_task); + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['rawmode']); + if ($env{'form.rawmode'}) { $result = $filecontents; } } } # # Edit action? Insert editing commands # - unless ($ENV{'request.state'} eq 'published') { - if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) { + unless ($env{'request.state'} eq 'published') { + if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'}))) + { my $displayfile=$request->uri; $displayfile=~s/^\/[^\/]*//; - my $bodytag=''; - if ($ENV{'environment.remote'} eq 'off') { - $bodytag=&Apache::loncommon::bodytag(); + my %options = (); + if ($env{'environment.remote'} ne 'off') { + $options{'bgcolor'} = '#FFFFFF'; } - $result=''.$bodytag. + my $start_page = &Apache::loncommon::start_page(undef,undef, + \%options); + $result=$start_page. &Apache::lonxml::message_location().'

'. $displayfile. - '

'; + ''.&Apache::loncommon::end_page(); $result=&inserteditinfo($result,$filecontents,$filetype); } } - if ($filetype eq 'html') { writeallows($request->uri); } + if ($filetype eq 'html') { &writeallows($request->uri); } &Apache::lonxml::add_messages(\$result); @@ -1362,10 +1509,10 @@ ENDNOTFOUND sub display_title { my $result; - if ($ENV{'request.state'} eq 'construct') { + if ($env{'request.state'} eq 'construct') { my $title=&Apache::lonnet::gettitle(); if (!defined($title) || $title eq '') { - $title = $ENV{'request.filename'}; + $title = $env{'request.filename'}; $title = substr($title, rindex($title, '/') + 1); } $result = ""; @@ -1377,22 +1524,27 @@ sub debug { if ($Apache::lonxml::debug eq "1") { $|=1; my $request=$Apache::lonxml::request; - if (!$request) { $request=Apache->request; } + if (!$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 '/home/httpd/html/res/lib/templates/simpleproblem.problem' && - &Apache::lonnet::allowed('mdc',$ENV{'request.course.id'})) { + if ($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) || - ($ENV{'request.state'} eq 'construct') || + ($env{'request.state'} eq 'construct') || ($Apache::lonhomework::browse eq 'F' && - $ENV{'form.show_errors'} eq 'on')); + $env{'form.show_errors'} eq 'on')); } sub error { @@ -1409,21 +1561,38 @@ sub error { if ( !$symb ) { #public or browsers $errormsg=&mt("An error occured while processing this resource. The author has been notified."); - } + } + my $host=$Apache::lonnet::perlvar{'lonHostID'}; + my $msg = join('
',(@_,"The error occurred on host $host")); #notify author - &Apache::lonmsg::author_res_msg($ENV{'request.filename'},join('
',@_)); + &Apache::lonmsg::author_res_msg($env{'request.filename'},$msg); #notify course - if ( $symb && $ENV{'request.course.id'} ) { + 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::lonfeedback::decide_receiver(undef,0,1,1,1); - my $declutter=&Apache::lonnet::declutter($ENV{'request.filename'}); + 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('
',@_)); + 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]",$msg,'','','','', + \$sentmessage,$symb,$title,1); + &Apache::lonnet::put('nohist_xmlerrornotifications', + {$key => $now}, + $cdom,$cnum); + } } - if ($ENV{'request.role.adv'}) { + if ($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."); @@ -1436,10 +1605,8 @@ sub error { sub warning { $warningcount++; - if ($ENV{'form.grade_target'} ne 'tex') { + 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, $Apache::lonxml::warnings_error_header. "WARNING:".join('
',@_)."
\n"); @@ -1449,8 +1616,8 @@ sub warning { } sub info { - if ($ENV{'form.grade_target'} ne 'tex' - && $ENV{'request.state'} eq 'construct') { + if ($env{'form.grade_target'} ne 'tex' + && $env{'request.state'} eq 'construct') { push(@Apache::lonxml::info_messages,join('
',@_)."
\n"); } } @@ -1482,14 +1649,14 @@ sub get_param { } 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 { @@ -1508,10 +1675,10 @@ sub get_param_var { } &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); #' &Apache::lonxml::debug("first run is $value"); if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) { @@ -1594,48 +1761,6 @@ sub helpinfo { return ($insertlist{$tagnum.'.helpfile'}, $insertlist{$tagnum.'.helpdesc'}); } -# ----------------------------------------------------------------- whichuser -# returns a list of $symb, $courseid, $domain, $name that is correct for -# calls to lonnet functions for this setup. -# - looks for form.grade_ parameters -sub whichuser { - my ($passedsymb)=@_; - my ($symb,$courseid,$domain,$name,$publicuser); - if (defined($ENV{'form.grade_symb'})) { - 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. - '/'.$ENV{'request.course.sec'}); - } - if ($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); -} - 1; __END__