--- loncom/xml/lonxml.pm 2004/05/27 04:25:13 1.319 +++ loncom/xml/lonxml.pm 2005/01/28 09:49:52 1.352 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # XML Parser Module # -# $Id: lonxml.pm,v 1.319 2004/05/27 04:25:13 albertel Exp $ +# $Id: lonxml.pm,v 1.352 2005/01/28 09:49:52 albertel 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); +qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount @htmlareafields); use strict; use HTML::LCParser(); use HTML::TreeBuilder(); @@ -51,7 +51,7 @@ use Math::Cephes(); use Math::Random(); use Opcode(); use POSIX qw(strftime); - +use Time::HiRes qw( gettimeofday tv_interval ); sub register { my ($space,@taglist) = @_; @@ -150,6 +150,7 @@ $Apache::lonxml::warnings_error_header=' sub xmlbegin { my $output=''; + @htmlareafields=(); if ($ENV{'browser.mathml'}) { $output='' .'' @@ -158,19 +159,28 @@ sub xmlbegin { .''; } else { - $output=''; + $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($mode,$status).''; + my $discussion=&Apache::lonfeedback::list_discussion($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.''; + } } sub tokeninputfield { @@ -278,7 +288,7 @@ sub fontsettings() { my $headerstring=''; if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) { $headerstring.= - ''; + ''; } elsif (!$ENV{'browser.mathml'} && $ENV{'browser.unicode'}) { $headerstring.= ''; @@ -311,13 +321,15 @@ 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); - 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); @@ -388,8 +400,10 @@ sub latex_special_symbols { } else { $string=~s/\\/\\ensuremath{\\backslash}/g; $string=~s/([^\\]|^)\%/$1\\\%/g; - $string=~s/([^\\]|^)(\$|_)/$1\\$2/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 @@ -397,6 +411,7 @@ sub latex_special_symbols { # 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 $string; @@ -604,6 +619,7 @@ sub setup_globals { my ($request,$target)=@_; $Apache::lonxml::request=$request; $Apache::lonxml::registered = 0; + @Apache::lonxml::htmlareafields=(); $errorcount=0; $warningcount=0; $Apache::lonxml::default_homework_loaded=0; @@ -662,7 +678,9 @@ sub init_safespace { $safehole->wrap(\&Apache::scripttag::xmlparse,$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'); @@ -736,9 +754,11 @@ 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'); + $safehole->wrap(\&Apache::caparesponse::get_sigrange,$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(); @@ -747,27 +767,6 @@ sub init_safespace { &Apache::lonxml::debug("Setting rndseed to $rndseed"); &Apache::run::run($safeinit,$safeeval); - my $subroutine=<<'EVALUATESUB'; -sub __LC_INTERNAL_EVALUATE__ { - my ($__LC__a,$__LC__b,$__LC__c)=@_; - my $__LC__prefix; - while(1){ - { - use strict; - no strict "vars"; - if (eval(defined(eval($__LC__a.$__LC__b)))) { - return $__LC__prefix.eval($__LC__a.$__LC__b.$__LC__c); - } - } - $__LC__prefix.=substr($__LC__a,0,1,""); - if ($__LC__a!~/^(\$|&|\#)/) { last; } - } - return $__LC__prefix.$__LC__a.$__LC__b.$__LC__c; -} -EVALUATESUB - $safeeval->permit("require"); - $safeeval->reval($subroutine); - $safeeval->deny("require"); } sub default_homework_load { @@ -782,18 +781,26 @@ sub default_homework_load { } } +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 { @@ -809,6 +816,8 @@ sub initdepth { $Apache::lonxml::olddepth=-1; } +my @timers; +my $lasttime; sub increasedepth { my ($token) = @_; $Apache::lonxml::depth++; @@ -816,8 +825,15 @@ sub increasedepth { if ($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"; } @@ -832,37 +848,44 @@ 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 = $$pars[-1]->get_token) { - if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) { - $result.=$token->[1]; - } elsif ($token->[0] eq 'PI') { - $result.=$token->[2]; - } elsif ($token->[0] eq 'S') { - $result.=$token->[4]; - } elsif ($token->[0] eq 'E') { - $result.=$token->[2]; - } - if ($result =~ /(.*)\Q$tag\E(.*)/is) { - &Apache::lonxml::debug('Got a winner with leftovers ::'.$2); - &Apache::lonxml::debug('Result is :'.$1); - $result=$1; - my $redo=$tag.$2; - &Apache::lonxml::newparser($pars,\$redo); - last; - } - } - return $result + my($tag,$pars)= @_; + my $token; + my $result=''; + $tag='<'.$tag.'>'; + while ($token = $$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 $result } sub increment_counter { @@ -1006,6 +1029,8 @@ sub parstring { unless ($_=~/\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\";"; } @@ -1094,21 +1119,20 @@ sub storefile { } sub createnewhtml { - my $filecontents=(< - - Title of Document Goes Here - +$title - - Body of Document Goes Here - +$body SIMPLECONTENT - return $filecontents; + return $filecontents; } sub createnewsty { @@ -1129,8 +1153,37 @@ sub inserteditinfo { $filecontents = &HTML::Entities::encode($filecontents,'<>&"'); # my $editheader='Edit below
'; my $xml_help = ''; + my $initialize=''; if ($filetype eq 'html') { - $xml_help=Apache::loncommon::helpLatexCheatsheet(); + my $addbuttons=&Apache::lonhtmlcommon::htmlareaaddbuttons(); + $initialize=&Apache::lonhtmlcommon::htmlareaheaders(). + &Apache::lonhtmlcommon::spellheader(); + if (!&Apache::lonhtmlcommon::htmlareablocked() && + &Apache::lonhtmlcommon::htmlareabrowser()) { + $initialize.=(< +$addbuttons + + HTMLArea.loadPlugin("FullPage"); + + function initDocument() { + var editor=new HTMLArea("filecont",config); + editor.registerPlugin(FullPage); + editor.generate(); + } + +FULLPAGE + } else { + $initialize.=(< +$addbuttons + function initDocument() { + } + +FULLPAGE + } + $result=~s/\]*)\>/\/i; + $xml_help=&Apache::loncommon::helpLatexCheatsheet(); } my $cleanbut = ''; if ($filetype eq 'html') { @@ -1146,18 +1199,22 @@ $cleanbut 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; @@ -1204,6 +1261,8 @@ 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; @@ -1245,7 +1304,7 @@ $bodytag ENDNOTFOUND - $filecontents=''; + $filecontents=''; if ($ENV{'request.state'} ne 'published') { if ($filetype eq 'sty') { $filecontents=&createnewsty(); @@ -1256,6 +1315,10 @@ ENDNOTFOUND } } else { unless ($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); } @@ -1277,7 +1340,11 @@ ENDNOTFOUND if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) { my $displayfile=$request->uri; $displayfile=~s/^\/[^\/]*//; - $result=''. + my $bodytag=''; + if ($ENV{'environment.remote'} eq 'off') { + $bodytag=&Apache::loncommon::bodytag(); + } + $result=''.$bodytag. &Apache::lonxml::message_location().'

'. $displayfile. '

'; @@ -1312,42 +1379,65 @@ sub debug { 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++; - my $request=$Apache::lonxml::request; - if (!$request) { $request=Apache->request; } - if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) { - # If printing in construction space, put the error inside 

-      push(@Apache::lonxml::error_messages,
-	   $Apache::lonxml::warnings_error_header.
-	   "ERROR:".join("
\n",@_)."
\n");
-      $Apache::lonxml::warnings_error_header='';
-  } else {
-      push(@Apache::lonxml::error_messages,
-	   "An Error occured while processing this resource. The instructor has been notified. 
");
-    #notify author
-    &Apache::lonmsg::author_res_msg($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 
");
     }
-  }
 }
 
 sub warning {
     $warningcount++;
   
     if ($ENV{'form.grade_target'} ne 'tex') {
-	if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
+	if ( &show_error_warn_msg() ) {
 	    my $request=$Apache::lonxml::request;
 	    if (!$request) { $request=Apache->request; }
 	    push(@Apache::lonxml::warning_messages,
@@ -1424,7 +1514,7 @@ 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($result[0])) {
@@ -1512,29 +1602,36 @@ sub whichuser {
   my ($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);
 }