--- loncom/xml/lonxml.pm 2000/06/19 15:52:29 1.1 +++ loncom/xml/lonxml.pm 2003/05/28 21:05:33 1.258 @@ -1,1305 +1,1455 @@ -package Apache::lonxml; - +# The LearningOnline Network with CAPA +# XML Parser Module +# +# $Id: lonxml.pm,v 1.258 2003/05/28 21:05:33 albertel Exp $ +# +# Copyright Michigan State University Board of Trustees +# +# This file is part of the LearningOnline Network with CAPA (LON-CAPA). +# +# LON-CAPA is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# LON-CAPA is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with LON-CAPA; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +# +# /home/httpd/html/adm/gpl.txt +# +# http://www.lon-capa.org/ +# +# Copyright for TtHfunc and TtMfunc by Ian Hutchinson. +# TtHfunc and TtMfunc (the "Code") may be compiled and linked into +# binary executable programs or libraries distributed by the +# Michigan State University (the "Licensee"), but any binaries so +# distributed are hereby licensed only for use in the context +# of a program or computational system for which the Licensee is the +# primary author or distributor, and which performs substantial +# additional tasks beyond the translation of (La)TeX into HTML. +# 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 $warningcount); use strict; -use HTML::TokeParser; -use Safe; +use HTML::LCParser(); +use HTML::TreeBuilder(); +use HTML::Entities(); +use Safe(); +use Safe::Hole(); +use Math::Cephes(); +use Math::Random(); +use Opcode(); + +sub register { + my ($space,@taglist) = @_; + foreach my $temptag (@taglist) { + push(@{ $Apache::lonxml::alltags{$temptag} },$space); + } +} + +sub deregister { + my ($space,@taglist) = @_; + foreach my $temptag (@taglist) { + my $tempspace = $Apache::lonxml::alltags{$temptag}[-1]; + if ($tempspace eq $space) { + pop(@{ $Apache::lonxml::alltags{$temptag} }); + } + } + #&printalltags(); +} + use Apache::Constants qw(:common); -use Apache::lontexconvert; +use Apache::lontexconvert(); +use Apache::style(); +use Apache::run(); +use Apache::londefdef(); +use Apache::scripttag(); +use Apache::edit(); +use Apache::lonnet(); +use Apache::File(); +use Apache::loncommon(); +use Apache::lonfeedback(); +use Apache::lonmsg(); +use Apache::loncacc(); + +#================================================== Main subroutine: xmlparse +#debugging control, to turn on debugging modify the correct handler +$Apache::lonxml::debug=0; + +# keeps count of the number of warnings and errors generated in a parse +$warningcount=0; +$errorcount=0; + +#path to the directory containing the file currently being processed +@pwd=(); + +#these two are used for capturing a subset of the output for later processing, +#don't touch them directly use &startredirection and &endredirection +@outputstack = (); +$redirection = 0; + +#controls wheter the tag actually does +$import = 1; +@extlinks=(); + +# meta mode is a bit weird only some output is to be turned off +# tag turns metamode off (defined in londefdef.pm) +$metamode = 0; + +# turns on and of run::evaluate actually derefencing var refs +$evaluate = 1; + +# data structure for eidt mode, determines what tags can go into what other tags +%insertlist=(); + +# stores the list of active tag namespaces +@namespace=(); + +# if 0 all high ASCII characters will be encoded into HTML Entities +$prevent_entity_encode=0; + +# has the dynamic menu been updated to know about this resource +$Apache::lonxml::registered=0; + +# a pointer the the Apache request object +$Apache::lonxml::request=''; + +# a problem number counter, and check on ether it is used +$Apache::lonxml::counter=1; +$Apache::lonxml::counter_changed=0; + +#internal check on whether to look at style defs +$Apache::lonxml::usestyle=1; + +sub xmlbegin { + my $output=''; + if ($ENV{'browser.mathml'}) { + $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 ($contrib{$idx.':attachmenturl'}) { + my ($fname,$ft) + =($contrib{$idx.':attachmenturl'}=~/\/(\w+)\.(\w+)$/); + $message.='

Attachment: '.$fname.'.'.$ft.''; + } + 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
+ +

+Attachment (128 KB max size): +

+ +ENDDISCUSS + $discussion.=&Apache::lonfeedback::generate_preview_button(); + } + } + } + return $discussion.($discussiononly?'':''); +} + +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); +} -#======================================================= Main subroutine: xmlparse +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'})) { + $headerstring.= + ''; + } elsif (!$ENV{'browser.mathml'}) { + $headerstring.= + ''; + } + return $headerstring; +} + +sub printalltags { + my $temp; + foreach $temp (sort keys %Apache::lonxml::alltags) { + &Apache::lonxml::debug("$temp -- ". + join(',',@{ $Apache::lonxml::alltags{$temp} })); + } +} sub xmlparse { + my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_; - my ($target,$content_file_string,%style_for_target) = @_; - my $pars = HTML::TokeParser->new(\$content_file_string); - my $currentstring = ''; - my $finaloutput = ''; - my $newarg = ''; - my $tempostring = ''; - my $tempocont = ''; - my $safeeval = new Safe; - -#------------------------- Redefinition of the target in the case of compound target - ($target, my @tenta) = split('&&',$target); -#------------------------------ Stack definition (in stack we have all current tags) - - my @stack = (); - my @parstack = (); - -#------------------------------------------ Parse input string (content_file_string) - - my $token; - - while ($token = $pars->get_token) { - if ($token->[0] eq 'T') { - $finaloutput .= $token->[1]; - $tempocont .= $token->[1]; - } elsif ($token->[0] eq 'S') { -#------------------------------------------------------------------ add tag to stack - push (@stack,$token->[1]); -#---------------------------------------------- add parameters list to another stack - map {$tempostring .= "$_=$token->[2]->{$_},"} @{$token->[3]}; - push (@parstack,$tempostring); - $tempostring = ''; - $tempocont = ''; - - if (exists $style_for_target{$token->[1]}) { - -#--------------------------------------------------------- use style file definition - - $newarg = $style_for_target{$token->[1]}; - - if (index($newarg,'script') != -1 ) { - my $pat = HTML::TokeParser->new(\$newarg); - my $tokenpat; - my $partstring = ''; - my $oustring = ''; - my $outputstring; - - while ($tokenpat = $pat->get_token) { - if ($tokenpat->[0] eq 'T') { - $oustring .= $tokenpat->[1]; - } elsif ($tokenpat->[0] eq 'S') { - if ($tokenpat->[1] eq 'script') { - while ($tokenpat = $pat->get_token and $tokenpat->[1] ne 'script') { - if ($tokenpat->[0] eq 'S') { - $partstring .= $tokenpat->[4]; - } elsif ($tokenpat->[0] eq 'T') { - $partstring .= $tokenpat->[1]; - } elsif ($tokenpat->[0] eq 'E') { - $partstring .= $tokenpat->[2]; - } - } - - map {$partstring =~ s/\$$_/$token->[2]->{$_}/g; } @{$token->[3]}; - - &run($partstring,$safeeval); - $partstring = ''; - } elsif ($tokenpat->[1] eq 'evaluate') { - $outputstring = &evaluate($tokenpat->[2]{expression},$safeeval); - $oustring .= $outputstring; - } else { - $oustring .= $tokenpat->[4]; - } - } elsif ($tokenpat->[0] eq 'E' and $tokenpat->[1] ne 'evaluate') { - $oustring .= $tokenpat->[1]; - } - } - $newarg = $oustring; - } else { - map {$newarg =~ s/\$$_/$token->[2]->{$_}/g; } @{$token->[3]}; - } - $finaloutput .= $newarg; - } else { -#----------------------------------------------------- use default definition of tag - my $sub="start_$token->[1]"; - - { - no strict 'refs'; - if (defined (&$sub)) { - $currentstring = &$sub($target,$token,\@parstack); - $finaloutput .= $currentstring; - $currentstring = ''; - } else { - $finaloutput .= $token->[4]; - } - use strict 'refs'; - } - } - } elsif ($token->[0] eq 'E') { - pop @stack; - unless (exists $style_for_target{$token->[1]}) { - my $sub="end_$token->[1]"; - { - no strict 'refs'; - if (defined (&$sub)) { - $currentstring = &$sub($target,$token,\@parstack); - $finaloutput .= $currentstring; - $currentstring = ''; - } else { - $finaloutput .= $token->[4]; - } - use strict 'refs'; - } - } -#------------------------------------------------------- end tag from the style file - if (exists $style_for_target{'/'."$token->[1]"}) { - $newarg = $style_for_target{'/'."$token->[1]"}; - my @very_temp = split(',',@parstack[$#parstack]); - map {my @ret= split('=',$_); $newarg =~ s/\$$ret[0]/$ret[1]/g; } @very_temp; - $finaloutput .= $newarg; - } - pop @parstack; - } + &setup_globals($request,$target); + &Apache::inputtags::initialize_inputtags(); + &Apache::outputtags::initialize_outputtags(); + &Apache::edit::initialize_edit(); + +# +# do we have a course style file? +# + + if ($ENV{'request.course.id'} && $ENV{'request.state'} ne 'construct') { + my $bodytext= + $ENV{'course.'.$ENV{'request.course.id'}.'.default_xml_style'}; + if ($bodytext) { + my $location=&Apache::lonnet::filelocation('',$bodytext); + my $styletext=&Apache::lonnet::getfile($location); + if ($styletext ne '-1') { + %style_for_target = (%style_for_target, + &Apache::style::styleparser($target,$styletext)); + } } - return $finaloutput; + } +#&printalltags(); + my @pars = (); + my $pwd=$ENV{'request.filename'}; + $pwd =~ s:/[^/]*$::; + &newparser(\@pars,\$content_file_string,$pwd); + + my $safeeval = new Safe; + my $safehole = new Safe::Hole; + &init_safespace($target,$safeeval,$safehole,$safeinit); +#-------------------- Redefinition of the target in the case of compound target + + ($target, my @tenta) = split('&&',$target); + + my @stack = (); + my @parstack = (); + &initdepth; + + my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars, + $safeeval,\%style_for_target); + + if ($ENV{'request.uri'}) { + &writeallows($ENV{'request.uri'}); + } + if ($Apache::lonxml::counter_changed) { &store_counter() } + return $finaloutput; } +sub htmlclean { + my ($raw,$full)=@_; -#================================================================== style subroutine + my $tree = HTML::TreeBuilder->new; + $tree->ignore_unknown(0); -sub styleparser { + $tree->parse($raw); - my ($target,$content_style_string) = @_; + my $output= $tree->as_HTML(undef,' '); -#------------------------------------------------ target redefinition (if necessary) - - my @target_string = ''; - my $element; - - ($element,@target_string) = split ('&&',$target); - - map {$content_style_string =~ s/\<(.*)$_\>/\<$1$element\>/g; } @target_string; - - $target = $element; - -#------------------------------------------------- create a table for defined target -#---------------------------------------------- from the information from Style File - - my @value_style = (); - my $current_key = ''; - my $current_value = ''; - - my $pstyle = HTML::TokeParser->new(\$content_style_string); - - my $stoken; - - while ($stoken = $pstyle->get_token) { -#---------------------------------------------------------- start for tag definition - if ($stoken->[0] eq 'S' and $stoken->[1] eq 'definetag') { -#------------------------------------------------------------------- new key in hash - $current_key = $stoken->[2]{name}; - if ($target eq 'meta') { -#-------------------------------------------------- reserved for the metadate output - - - } else { -#-------------------------------------------------------------------- outtext output - while ($stoken = $pstyle->get_token and $stoken->[1] ne 'outtext') { - } - while ($stoken = $pstyle->get_token and $stoken->[0] ne 'S') { - $current_value .= $stoken->[1]; - } - while ($stoken->[1] ne 'definetag') { - if ($stoken->[0] eq 'S' and $stoken->[1] eq $target) { - while ($stoken = $pstyle->get_token) { - if ($stoken->[1] ne $target) { - if ($stoken->[0] eq 'S') { - $current_value .= $stoken->[4]; - } - if ($stoken->[0] eq 'E') { - $current_value .= $stoken->[2]; - } - if ($stoken->[0] eq 'T') { - $current_value .= $stoken->[1]; - } - } else { - last; - } - } - } elsif ($stoken->[0] eq 'S' and $stoken->[1] ne $target) { - while ($stoken = $pstyle->get_token and $stoken->[0] ne 'E') { - } - } - - while ($stoken = $pstyle->get_token) { - if ($stoken->[0] eq 'T') { - $current_value .= $stoken->[1]; - } - if ($stoken->[0] eq 'E') { - last; - } - if ($stoken->[0] eq 'S') { - last; - } - } - - } - } - - } - push (@value_style,lc $current_key,$current_value); - $current_key = ''; - $current_value = ''; + $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis; + $output=~s/\<\/(br|hr|img|meta|allow)\>//gis; + unless ($full) { + $output=~s/\<[\/]*(body|head|html)\>//gis; + } - } - - my %style_for_target = @value_style; - -#-------------------------------------------------------------------- check printing -# while (($current_key,$current_value) = each %style_for_target) { -# print "$current_key => $current_value\n"; -# } + $tree = $tree->delete; - return %style_for_target; - + return $output; } +sub latex_special_symbols { + my ($current_token,$stack,$parstack,$where)=@_; + if ($where eq 'header') { + $current_token =~ s/(\\|_|\^)/ /g; + $current_token =~ s/(\$|%|\#|&|\{|\})/\\$1/g; + } else { + $current_token=~s/\\ /\\char92 /g; + $current_token=~s/\^/\\char94 /g; + $current_token=~s/\~/\\char126 /g; + $current_token=~s/(&[^A-Za-z\#])/\\$1/g; + $current_token=~s/([^&])\#/$1\\#/g; + $current_token=~s/(\$|_|{|})/\\$1/g; + $current_token=~s/\\char92 /\\texttt{\\char92}/g; + $current_token=~s/(>|<)/\$$1\$/g; #more or less + if ($current_token=~m/\d%/) {$current_token =~ s/(\d)%/$1\\%/g;} #percent after digit + if ($current_token=~m/\s%/) {$current_token =~ s/(\s)%/$1\\%/g;} #persent after space + } + return $current_token; +} - -#=============================================================== Subroutine definition -#--------------------------------------------------------------------------------- Run - sub evaluate { - my ($expression,$safeeval) = @_; - return $safeeval->reval($expression); - } - - sub run { - my ($code,$safeeval) = @_; - $safeeval->reval($code); - } - -#===================================================================== TAG SUBROUTINES -#----------------------------------------------------------------------------- tag - sub start_m { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = "\$out = lontexconvert::converted(\$in = '\$'.\""; - } elsif ($target eq 'tex') { - $currentstring = "\$"; - } - return $currentstring; - } - sub end_m { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = "\".'\$') "; - } elsif ($target eq 'tex') { - $currentstring = "\$"; - } - return $currentstring; - } -#-------------------------------------------------------------------------- tag - sub start_html { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } - return $currentstring; - } - sub end_html { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } - return $currentstring; - } -#-------------------------------------------------------------------------- tag - sub start_head { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } - return $currentstring; - } - sub end_head { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } - return $currentstring; - } -#--------------------------------------------------------------------------- tag - sub start_map { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } - return $currentstring; - } - sub end_map { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } - return $currentstring; - } -#------------------------------------------------------------------------ tag - sub start_applet { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } - return $currentstring; - } - sub end_applet { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } - return $currentstring; - } -#------------------------------------------------------------------------ tag - sub start_input { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } - return $currentstring; - } - sub end_input { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } - return $currentstring; - } -#---------------------------------------------------------------------- +
$buttons +
+ +$titledisplay +ENDFOOTER +# $result=~s/(\]*\>)/$1$editheader/is; + $result=~s/(\<\/body\>)/$editfooter/is; + return $result; +} + +sub get_target { + my $viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); + if ( $ENV{'request.state'} eq 'published') { + if ( defined($ENV{'form.grade_target'}) + && ($viewgrades == 'F' )) { + return ($ENV{'form.grade_target'}); + } elsif (defined($ENV{'form.grade_target'})) { + if (($ENV{'form.grade_target'} eq 'web') || + ($ENV{'form.grade_target'} eq 'tex') ) { + return $ENV{'form.grade_target'} + } else { + return 'web'; + } + } else { + return 'web'; + } + } elsif ($ENV{'request.state'} eq 'construct') { + if ( defined($ENV{'form.grade_target'})) { + return ($ENV{'form.grade_target'}); + } else { + return 'web'; + } + } else { + return 'web'; + } +} + +sub handler { + my $request=shift; + + my $target=&get_target(); + + $Apache::lonxml::debug=$ENV{'user.debug'}; + + if ($ENV{'browser.mathml'}) { + $request->content_type('text/xml'); + } else { + $request->content_type('text/html'); + } + &Apache::loncommon::no_cache($request); + $request->send_http_header; + + return OK if $request->header_only; + + + 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,$ENV{'form.filecont'}); } -#----------------------------------------------------------------------------- tag - sub start_a { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring .= $token->[4]; - } elsif ($target eq 'tex') { + } + my %mystyle; + my $result = ''; + my $filecontents=&Apache::lonnet::getfile($file); + if ($filecontents eq -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); } - return $currentstring; - } - sub end_a { - my ($target,$token,$stackref) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring .= $token->[2]; - } elsif ($target eq 'tex') { - my $tempor_var = $stackref->[$#$stackref]; - if (index($tempor_var,'name') != -1 ) { - $tempor_var =~ s/name=([^,]*),/$1/g; - $currentstring .= " \\label{$tempor_var}"; - } elsif (index($tempor_var,'href') != -1 ) { - $tempor_var =~ s/href=([^,]*),/$1/g; - $currentstring .= " \\ref{$tempor_var}"; - } - } - return $currentstring; - } -#----------------------------------------------------------------------------
  • tag - sub start_li { - my ($target,$token,$stackref) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } elsif ($target eq 'tex') { - my $tempor_var = $stackref->[$#$stackref-1]; - if (index($tempor_var,'circle') != -1 ) { - $currentstring .= " \\item[o] "; - } elsif (index($tempor_var,'square') != -1 ) { - $currentstring .= " \\item[$\Box$] "; - } else { - $currentstring .= " \\item "; - } - } - return $currentstring; - } - sub end_li { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } - return $currentstring; - } -#----------------------------------------------------------------------------- tag - sub start_u { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring .= $token->[4]; - } elsif ($target eq 'tex') { - $currentstring .= "{\\underline "; - } - return $currentstring; - } - sub end_u { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring .= $token->[2]; - } elsif ($target eq 'tex') { - $currentstring .= " }"; - } - return $currentstring; - } -#----------------------------------------------------------------------------
      tag - sub start_ul { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } elsif ($target eq 'tex') { - $currentstring = " \\begin{itemize} "; - } - return $currentstring; } - sub end_ul { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } elsif ($target eq 'tex') { - $currentstring = " \\end{itemize}"; - } - return $currentstring; + if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) { + $result = &Apache::lonxml::xmlparse($request,$target,$filecontents, + '',%mystyle); } -#-------------------------------------------------------------------------- tag - sub start_menu { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } elsif ($target eq 'tex') { - $currentstring = " \\begin{itemize} "; - } - return $currentstring; - } - sub end_menu { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } elsif ($target eq 'tex') { - $currentstring = " \\end{itemize}"; - } - return $currentstring; - } -#--------------------------------------------------------------------------- tag - sub start_dir { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } elsif ($target eq 'tex') { - $currentstring = " \\begin{itemize} "; - } - return $currentstring; - } - sub end_dir { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } elsif ($target eq 'tex') { - $currentstring = " \\end{itemize}"; - } - return $currentstring; - } -#----------------------------------------------------------------------------
        tag - sub start_ol { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } elsif ($target eq 'tex') { - $currentstring = " \\begin{enumerate} "; - } - return $currentstring; - } - sub end_ol { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } elsif ($target eq 'tex') { - $currentstring = " \\end{enumerate}"; - } - return $currentstring; - } -#----------------------------------------------------------------------------
        tag - sub start_dl { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } elsif ($target eq 'tex') { - $currentstring = " \\begin{description} "; - } - return $currentstring; - } - sub end_dl { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } elsif ($target eq 'tex') { - $currentstring = " \\end{description}"; - } - return $currentstring; - } -#----------------------------------------------------------------------------
        tag - sub start_dt { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } elsif ($target eq 'tex') { - $currentstring = "\\item[ "; - } - return $currentstring; - } - sub end_dt { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } elsif ($target eq 'tex') { - $currentstring = "]"; - } - return $currentstring; - } -#----------------------------------------------------------------------------
        tag - sub start_dd { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } - return $currentstring; + } + +# +# Edit action? Insert editing commands +# + unless ($ENV{'request.state'} eq 'published') { + if ($ENV{'form.editmode'} && (!($ENV{'form.viewmode'}))) { + my $displayfile=$request->uri; + $displayfile=~s/^\/[^\/]*//; + $result='

        '.$displayfile. + '

        '; + $result=&inserteditinfo($result,$filecontents); } - sub end_dd { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } - return $currentstring; + } + + writeallows($request->uri); + + + $request->print($result); + + 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($title, '/') + 1); } -#------------------------------------------------------------------------- tag - sub start_table { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } elsif ($target eq 'tex') { - $currentstring = " \\begin{tabular} "; - } - return $currentstring; + $result = ""; + } + return $result; +} + +sub debug { + if ($Apache::lonxml::debug eq 1) { + $|=1; + print('DEBUG:'.&HTML::Entities::encode($_[0])."\n"); + } +} + +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('
        ',@_));
+      }
+    }
+
+    #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 {
+  $warningcount++;
+  if ($ENV{'request.state'} eq 'construct' || $Apache::lonxml::debug) {
+    print "WARNING:".join('
        ',@_)."
        \n";
+  }
+}
+
+sub get_param {
+    my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
+    if ( ! $context ) { $context = -1; }
+    my $args ='';
+    if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
+    if ( ! $args ) { return undef; }
+    if ( $case_insensitive ) {
+	if ($args =~ s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei) {
+	    return &Apache::run::run("{$args;".'return $'.$param.'}',
+                                     $safeeval); #'
+	} else {
+	    return undef;
+	}
+    } else {
+	if ( $args =~ /my \$\Q$param\E=\"/ ) {
+	    return &Apache::run::run("{$args;".'return $'.$param.'}',
+                                     $safeeval); #'
+	} else {
+	    return undef;
 	}
-        sub end_table {
-	    my ($target,$token) = @_;
-            my $currentstring = '';
-            if ($target eq 'web') {
-              $currentstring = $token->[2];     
-	    } elsif ($target eq 'tex') {
-              $currentstring = " \\end{tabular}";  
-	    } 
-	   return $currentstring;
+    }
+}
+
+sub get_param_var {
+  my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
+  if ( ! $context ) { $context = -1; }
+  my $args ='';
+  if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
+  &Apache::lonxml::debug("Args are $args param is $param");
+  if ($case_insensitive) {
+      if (! ($args=~s/(my \$)(\Q$param\E)(=\")/$1.lc($2).$3/ei)) {
+	  return undef;
+      }
+  } elsif ( $args !~ /my \$\Q$param\E=\"/ ) { return undef; }
+  my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
+  &Apache::lonxml::debug("first run is $value");
+  if ($value =~ /^[\$\@\%]\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++;
+    }
+  }
+  $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);
 	}
+      }
+    }
+    $tagnum++;
+  }
+}
+
+sub description {
+  my ($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'};
+}
+
+# ----------------------------------------------------------------- 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,$name,$publicuser);
+  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'};
+    }
+  } else {
+      $symb=&Apache::lonnet::symbread();
+      $courseid=$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__
+
+