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Sorry, should be 'qw'

    1: # The LON-CAPA Homework handler
    2: # Guy Albertelli
    3: # 11/30 Gerd Kortemeyer
    4: # 6/1 Gerd Kortemeyer
    5: 
    6: package Apache::lonhomework;
    7: use strict;
    8: use Apache::style;
    9: use Apache::lonxml;
   10: use Apache::lonnet;
   11: use Apache::inputtags;
   12: use Apache::structuretags;
   13: use Apache::response;
   14: use Apache::hint;
   15: use Apache::Constants qw(:common);
   16: 
   17: sub get_target {
   18:   if ( $ENV{'request.state'} eq "published") {
   19:     if ( defined $ENV{'form.submit'}) {
   20:       return ('grade', 'web');
   21:     } else {
   22:       return ('web');
   23:     }
   24:   } elsif ($ENV{'request.state'} eq "construct") {
   25:     if ( defined $ENV{'form.preview'}) {
   26:       if ( defined $ENV{'form.submit'}) {
   27: 	return ('grade', 'web');
   28:       } else {
   29: 	return ('web');
   30:       }
   31:     } else {
   32:       return ('edit');
   33:     }
   34:   }
   35:   return ();
   36: }
   37: 
   38: sub setup_vars {
   39:   my ($target) = @_;
   40:   return ';'
   41: #  return ';$external::target='.$target.';';
   42: }
   43: 
   44: sub send_header {
   45:   my ($request)= @_;
   46:   $request->print(&Apache::lontexconvert::header());
   47:   $ENV{'request.uri'}=$request->uri;
   48: #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
   49: }
   50: 
   51: sub send_footer {
   52:   my ($request)= @_;
   53: #  $request->print('</form>');
   54:   $request->print(&Apache::lontexconvert::footer());
   55: }
   56: 
   57: #@Apache::lonhomework::date_status=();
   58: #@Apache::lonhomework::date_msg=();
   59: sub check_date {
   60:   my ($id) = @_;
   61:   my $date ='';
   62:   my $status = '';
   63:   my $datemsg = '';
   64:   my $lastdate = '';
   65:   my $temp;
   66:   my $type;
   67:   my $passed;
   68:   &Apache::lonxml::debug("checking for part :$id:");
   69:   foreach $temp ("opendate","duedate","answerdate") {
   70:     $lastdate = $date;
   71:     $date = &Apache::lonnet::EXT("resource.$id.$temp");
   72:     &Apache::lonxml::debug("found :$date: for :$temp:");
   73:     if ($date eq '') {
   74:       $date = "an unknown date"; $passed = 0;
   75:     } else {
   76:       if (time < $date) { $passed = 0; } else { $passed = 1; }
   77:       $date = localtime $date;
   78:     }
   79:     if (!$passed) { $type=$temp; last; }
   80:   }
   81:   &Apache::lonxml::debug("have :$type:$passed:");
   82:   if ($passed) {
   83:     $status='SHOW_ANSWER';
   84:     $datemsg=$date;
   85:   } elsif ($type eq 'opendate') {
   86:     $status='CLOSED';
   87:     $datemsg = "will open on $date";
   88:   } elsif ($type eq 'duedate') {
   89:     $status='CAN_ANSWER';
   90:     $datemsg = "is due at $date";
   91:   } elsif ($type eq 'answerdate') {
   92:     $status='CLOSED';
   93:     $datemsg = "was due as $lastdate, and answers will be available at $date";
   94:   }
   95:   &Apache::lonxml::debug("sending back :$status:$datemsg:");
   96:   if ($ENV{'request.state'} eq "construct") {
   97:     &Apache::lonxml::debug("in construction ignoring dates");
   98:     $status='CAN_ANSWER';
   99:     $datemsg='is in under construction';
  100:   }
  101:   return ($status,$datemsg);
  102: }
  103: 
  104: sub handler {
  105:   my $request=$_[0];
  106: 
  107:   if ( $ENV{'user.name'} eq 'albertel' ) { $Apache::lonxml::debug=1; }
  108:   
  109:   my (@targets) = &get_target();
  110: 
  111:   if ($ENV{'browser.mathml'}) {
  112:     $request->content_type('text/xml');
  113:   } else {
  114:     $request->content_type('text/html');
  115:   }
  116:   $request->send_http_header;
  117:   return OK if $request->header_only;
  118:   
  119:   &Apache::lonhomework::send_header($request);
  120:   
  121:   #check if allowed to see
  122:   
  123:   foreach my $target (@targets) {
  124:     my $file=&Apache::lonnet::filelocation("",$request->uri);
  125:     my $problem=&Apache::lonnet::getfile($file);
  126:     if ($problem == -1) {
  127:       &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
  128:       $problem='';
  129:     }
  130:     
  131:     my %mystyle;
  132:     my $result = '';
  133:     &Apache::inputtags::initialize_inputtags;
  134:     %Apache::lonhomework::results=();
  135:     %Apache::lonhomework::history=&Apache::lonnet::restore;
  136:     #ignore error conditions
  137:     my ($temp)=keys %Apache::lonhomework::history ;
  138:     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); } 
  139:     if ($target eq 'web' && &Apache::lonnet::symbread() eq '') {
  140:       $request->print("Vieiwing this problem as not a student, submissions will be ignored.");
  141:     }
  142:     if ($target eq 'grade') {
  143:       my $resultkey;
  144:       foreach $resultkey (sort keys %Apache::lonhomework::history) {
  145: 	&Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::history{$resultkey}");
  146:       }
  147:       &Apache::lonxml::debug("\n<br>restored values^</br>\n");
  148:     }
  149:     my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
  150:     if ($default == -1) {
  151:       &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
  152:       $default='';
  153:     }
  154:     if ( $target eq 'grade') { 
  155:       $Apache::lonxml::textredirection = 0; 
  156:     } else {
  157:       $Apache::lonxml::textredirection = 1; 
  158:     }
  159:     $result = &Apache::lonxml::xmlparse($target, $problem,
  160: 			$default.&setup_vars($target),%mystyle);
  161: 
  162:     #$request->print("Result follows:");
  163:     $request->print($result);
  164:     #$request->print(":Result ends");
  165:     if ($target eq 'grade') {
  166:       my $resultkey;
  167:       foreach $resultkey (sort keys %Apache::lonhomework::results) {
  168: 	&Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::results{$resultkey}");
  169:       }
  170:       &Apache::lonxml::debug("\n<br>storing values^</br>\n");
  171:     }
  172:     
  173:     my ($temp) = keys %Apache::lonhomework::results;
  174:     if ( $temp ne '' ) {
  175:       &Apache::lonxml::debug("Store return message:".&Apache::lonnet::cstore(%Apache::lonhomework::results));
  176:     }
  177:   }
  178:   &Apache::lonhomework::send_footer($request);
  179:   
  180:   return OK;
  181: 
  182: }
  183: 
  184: 1;
  185: __END__