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version 1.46, 2001/12/04 14:54:47 version 1.102, 2003/05/19 21:15:21
Line 1 Line 1
 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA
 # caparesponse definition  # caparesponse definition
   #
   # $Id$
   #
   # 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/
   #
   
 package Apache::caparesponse;  package Apache::caparesponse;
 use strict;  use strict;
 use capa;  use capa;
   
 sub BEGIN {  BEGIN {
   &Apache::lonxml::register('Apache::caparesponse',('caparesponse','numericalresponse','stringresponse','formularesponse'));      &Apache::lonxml::register('Apache::caparesponse',('caparesponse','numericalresponse','stringresponse','formularesponse'));
 }  }
   
 sub start_caparesponse {  sub start_numericalresponse {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $id = &Apache::response::start_response($parstack,$safeeval);      my $id = &Apache::response::start_response($parstack,$safeeval);
   return '';      my $result;
 }      if ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
 sub end_caparesponse {   $result.=&Apache::edit::text_arg('Answer:','answer',$token);
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;   if ($token->[1] eq 'numericalresponse') {
   my $result = '';      $result.=&Apache::edit::text_arg('Unit:','unit',$token,5).
   if ( $target eq 'grade' ) {   &Apache::loncommon::help_open_topic('Physical_Units');
     if ( defined $ENV{'form.submitted'}) {      $result.=&Apache::edit::text_arg('Format:','format',$token,4).
       $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);   &Apache::loncommon::help_open_topic('Numerical_Response_Format');
       my $response = $ENV{'form.HWVAL'.$Apache::inputtags::response['-1']};   } elsif ($token->[1] eq 'stringresponse') {
       if ( $response =~ /[^\s]/) {      $result.=&Apache::edit::select_arg('Type:','type',
    [['cs','Case Sensitive'],['ci','Case Insensitive'],
     ['mc','Case Insensitive, Any Order']],$token);
    } elsif ($token->[1] eq 'formularesponse') {
       $result.=&Apache::edit::text_arg('Sample Points:','samples',
        $token,40).
         &Apache::loncommon::help_open_topic('Formula_Response_Sampling');
    }
    $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
    my $constructtag;
    if ($token->[1] eq 'numericalresponse') {
       $constructtag=&Apache::edit::get_new_args($token,$parstack,
         $safeeval,'answer',
         'unit','format');
    } elsif ($token->[1] eq 'stringresponse') {
       $constructtag=&Apache::edit::get_new_args($token,$parstack,
         $safeeval,'answer',
         'type');
    } elsif ($token->[1] eq 'formularesponse') {
       $constructtag=&Apache::edit::get_new_args($token,$parstack,
         $safeeval,'answer',
         'samples');
    }
    if ($constructtag) {
       $result = &Apache::edit::rebuild_tag($token);
       $result.=&Apache::edit::handle_insert();
    }
       } elsif ($target eq 'meta') {
    $result=&Apache::response::meta_package_write('numericalresponse');
       } elsif ($target eq 'answer' || $target eq 'grade') {
    &Apache::response::reset_params();
       } elsif ($target eq 'web') {
    my $partid = $Apache::inputtags::part;
    my $hideunit=&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffunit');
    &Apache::lonxml::debug("Got unit $hideunit for $partid $id");
    #no way to enter units, with radio buttons
    if (lc($hideunit) eq "yes") {
       my $unit=&Apache::lonxml::get_param_var('unit',$parstack,
       $safeeval);
       if ($unit =~ /\S/) { $result.=" (in $unit) "; }
    }
       }
       return $result;
   }
   
   sub end_numericalresponse {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $increment=1;
       my $result = '';
       if (!$Apache::lonxml::default_homework_loaded) {
    &Apache::lonxml::default_homework_load($safeeval);
       }
       if ( $target eq 'grade' && defined($ENV{'form.submitted'})) {
    &Apache::response::setup_params($$tagstack[-1]);
    $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
    my $partid = $Apache::inputtags::part;
  my $id = $Apache::inputtags::response['-1'];   my $id = $Apache::inputtags::response['-1'];
  my $previous= &Apache::response::check_for_previous($response,$id,$response);   if ($Apache::lonhomework::type eq 'exam' && 
  if ( $previous ) {       ($$tagstack[-1] eq 'formularesponse' ||
   $result = 'PREVIOUSLY_USED';       $$tagstack[-1] eq 'stringresponse')) {
       $increment=&Apache::response::scored_response($partid,$id);
  } else {   } else {
   $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}=$response;      my $response = &Apache::response::getresponse();
   &Apache::lonxml::debug("submitted a $response<br>\n");      if ( $response =~ /[^\s]/) {
   &Apache::lonxml::debug($$parstack[$#$parstack] . "\n<br>");   my $ad;
   my $expression="&caparesponse_check('".$response."','".   my %previous = &Apache::response::check_for_previous($response,$partid,$id);
     $$parstack[$#$parstack].   $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
       ';my $tol="'.$Apache::inputtags::params{'tol'}.'"'.   &Apache::lonxml::debug("submitted a $response<br>\n");
  ';my $sig="'.$Apache::inputtags::params{'sig'}.'"'.   &Apache::lonxml::debug($$parstack[-1] . "\n<br>");
   "');";  
   $result = &Apache::run::run($expression,$safeeval);   if ($ENV{'form.submitted'} eq 'scantron') {
   my ($ad) = split /:/ , $result;      my $number_of_bubbles = 8;#default values for number of bubbles
   $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}=$ad;      my (@formats)=&Apache::lonxml::get_param_var('format',
   &Apache::lonxml::debug("$expression");   $parstack,$safeeval);
   &Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");      my (@answers)=&Apache::lonxml::get_param_var('answer',
  }   $parstack,$safeeval);
       }      my @values=&make_numerical_bubbles($number_of_bubbles,$target,
     }         $answers[0],$formats[0]);
   } elsif ($target eq 'web') {      $response=$values[$response];
     #$result .= "The correct answer is ".&Apache::run::run("{$$parstack['-1'];".'return $answer}',$safeeval)."\n";   } else {
   }      $response =~ s/\\/\\\\/g;
   #Apache::lonxml::debug("\n<br>\nreal end caparesponse<br>\n");      $response =~ s/\'/\\\'/g;
   &Apache::response::end_response;   }
   return '';   &Apache::lonxml::debug("current $response");
    my $expression="&caparesponse_check_list('".$response."','".
       $$parstack[-1];
    my $hideunit=&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffunit');
    #no way to enter units, with radio buttons
    if ($Apache::lonhomework::type eq 'exam' ||
       lc($hideunit) eq "yes") {
       $expression.=';my $unit=undef;';
    }
    foreach my $key (keys(%Apache::inputtags::params)) {
       $expression.= ';my $'. #'
    $key.'="'.$Apache::inputtags::params{$key}.'"';
    }
    if ($$tagstack[-1] eq 'formularesponse') {
       $expression.=';my $type="fml";';
    } elsif ($$tagstack[-1] eq 'numericalresponse') {
       $expression.=';my $type="float";';
    }
    $expression.="');";
    $result = &Apache::run::run($expression,$safeeval);
    my ($awards) = split /:/ , $result;
    ($ad) = &Apache::inputtags::finalizeawards(split /,/ , $awards);
    &Apache::lonxml::debug("$expression");
    &Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");
    &Apache::response::handle_previous(\%previous,$ad);
    $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad;
    $result='';
       }
    }
       } elsif ($target eq 'web' || $target eq 'tex') {
    my (@answers)=&Apache::lonxml::get_param_var('answer',$parstack,
        $safeeval);
    my $award = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
    my $status = $Apache::inputtags::status['-1'];
    if (   ($award =~ /^correct/
                   && lc($Apache::lonhomework::problemstatus) ne 'no')
                || $status eq "SHOW_ANSWER"
                || $ENV{'form.texaward'} eq 'SHOW_ANSWER') {
       my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,
    $safeeval);
       my $unit=&Apache::lonxml::get_param_var('unit',$parstack,
       $safeeval);
       if ($target eq 'web') {
    $result="<br />The correct answer is ";
       } elsif ($target eq 'tex') {
    if ($ENV{'form.texaward'} eq 'SHOW_ANSWER') {
       $result='\vskip 0 mm The correct answer is \\texttt{ ';
    }
       }
       for (my $i=0; $i <= $#answers; $i++) {
    my $answer=$answers[$i];
    my $format;
    if ($#formats > 0) {
       $format=$formats[$i];
    } else {
       $format=$formats[0];
    }
    my $formatted;
    if ((defined($format)) && ($format ne '')) {
       &Apache::lonxml::debug("formatting with :$format: answer :$answer:");
       $formatted=sprintf('%.'.$format,$answer).',';
    } else {
       &Apache::lonxml::debug("no format answer :$answer:");
       $formatted="$answer,";
    }
    if ($ENV{'form.texaward'} eq 'SHOW_ANSWER') {
       $result.=$formatted;
    }
    if ($target eq 'tex') {
       $formatted='';
       #$formatted=&Apache::lonxml::latex_special_symbols($formatted);
    }
    $result.=$formatted;
       }
       chop $result;
       if ($target eq 'web') {
    $result.=" $unit.<br />";
       } elsif ($target eq 'tex') {
    if ($ENV{'form.texaward'} eq 'SHOW_ANSWER') {
       $result.=&Apache::lonxml::latex_special_symbols($unit);
       $result.="}. \\vskip 0 mm ";
    }
       }
    }
    if ($Apache::lonhomework::type eq 'exam') {
       my $number_of_bubbles = 8; #default values for number of bubbles
       my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,
    $safeeval);
       my $unit=&Apache::lonxml::get_param_var('unit',$parstack,
       $safeeval);
       my @bubble_values=&make_numerical_bubbles($number_of_bubbles,
         $target,$answers[0],
         $formats[0]);
       my @alphabet=('A'..'Z');
       my $id=$Apache::inputtags::response[-1];
       if ($target eq 'web') {
    if ($$tagstack[-1] eq 'numericalresponse') {
       if ($unit=~/\S/) {$result.=' (in '.$unit.')<br /><br />';}
       $result.= '<table border="1"><tr>';
       for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
    $result.='<td><input type="radio" name="HWVAL_'.$id.
       '" value="'.$bubble_values[$ind].'"><b>'.
    $alphabet[$ind].'</b>: '.
       $bubble_values[$ind].'</td>';
       }
       $result.='</tr></table>';
    } elsif ($$tagstack[-1] eq 'formularesponse') {
       $result.= '<br /><br /><font color="red">
                              <textarea name="HWVAL_'.$id.'" rows="4" cols="50">
                              </textarea></font> <br /><br />';
    }
       } elsif ($target eq 'tex') {
    if (defined $unit and $Apache::lonhomework::type eq 'exam') {
       $result.=' \textit{(in} \verb|'.$unit.'|\textit{)} ';
    }
    if ($$tagstack[-1] eq 'numericalresponse') {
       my ($celllength,$number_of_tables,@table_range)=
    &get_table_sizes($formats[0],$number_of_bubbles);
       my $j=0;
       my $cou=0;
       $result.='\vskip -1 mm \noindent \begin{enumerate}\item[\textbf{'.$Apache::lonxml::counter.'}.]';
       for (my $i=0;$i<$number_of_tables;$i++) {
    $result.='\vskip -1 mm \noindent \begin{tabular}{';
    for (my $ind=0;$ind<$table_range[$j];$ind++) {
       $result.='lp{'.$celllength.' mm}';
    }
    $result.='}';
    for (my $ind=$cou;$ind<$cou+$table_range[$j];$ind++) {
       $result.='\hskip -3 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -2 mm & {\small '.$bubble_values[$ind].'} ';
       if ($ind != $cou+$table_range[$j]-1) {$result.=' & ';}
    }
    $cou += $table_range[$j];
    $j++;
    $result.='\\\\\end{tabular}\vskip 0 mm ';
       }
       $result.='\end{enumerate}';
    } else {
       $result.='\fbox{\fbox{\parbox{\textwidth-5mm}{\strut\\\\\strut\\\\\strut\\\\\strut\\\\}}}';
       my $repetition = &Apache::response::repetition();
       $result.='\begin{enumerate}';
       for (my $i=0;$i<$repetition;$i++) {
    $result.='\item[\textbf{'.($Apache::lonxml::counter+$i).'}.]\textit{Leave blank on scoring form}\vskip 0 mm';
       }
       $increment=$repetition;
       $result.= '\end{enumerate}';
    }
       }
    }
       } elsif ($target eq 'edit') {
    $result.='</td></tr>'.&Apache::edit::end_table;
       } elsif ($target eq 'answer' || $target eq 'analyze') {
   
    my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
    if ($target eq 'analyze') {
       push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
       $Apache::lonhomework::analyze{"$part_id.type"} = $$tagstack[-1];
    }
    &Apache::response::setup_params($$tagstack[-1]);
    my (@answers)=&Apache::lonxml::get_param_var('answer',$parstack,$safeeval);
    my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,$safeeval);
    my $unit=&Apache::lonxml::get_param_var('unit',$parstack,$safeeval);
    my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval);
   
    if ($target eq 'answer') {
       $result.=&Apache::response::answer_header($$tagstack[-1]);
    }
    for(my $i=0;$i<=$#answers;$i++) {
       my $ans=$answers[$i];
       my $fmt=$formats[0];
       if (@formats && $#formats) {$fmt=$formats[$i];}
       my ($high,$low);
       if ($Apache::inputtags::params{'tol'}) {
    ($high,$low)=&get_tolrange($ans,$Apache::inputtags::params{'tol'});
       }
       my ($sighigh,$siglow);
       if ($Apache::inputtags::params{'sig'}) {
    ($sighigh,$siglow)=&get_sigrange($Apache::inputtags::params{'sig'});
       }
       if ($fmt && $$tagstack[-1] eq 'numericalresponse') {
    $ans = sprintf('%.'.$fmt,$ans);
    if ($high) {
       $high=sprintf('%.'.$fmt,$high);
       $low =sprintf('%.'.$fmt,$low);
    }
       }
       if ($target eq 'answer') {
    if ($high && $$tagstack[-1] eq 'numericalresponse') { $ans.=' ['.$low.','.$high.']'; }
    if ($sighigh && $$tagstack[-1] eq 'numericalresponse') {
       if ($ENV{'form.answer_output_mode'} eq 'tex') {
    $ans.= " Sig \\textit{$siglow - $sighigh}";
       } else {
    $ans.= " Sig <i>$siglow - $sighigh</i>";
       }
    }
    $result.=&Apache::response::answer_part($$tagstack[-1],$ans);
       } elsif ($target eq 'analyze') {
    push (@{ $Apache::lonhomework::analyze{"$part_id.answer"} }, $ans);
    if ($high) {
       push (@{ $Apache::lonhomework::analyze{"$part_id.ans_high"} }, $high);
       push (@{ $Apache::lonhomework::analyze{"$part_id.ans_low"} }, $low);
    }
       }
    }
    if (defined($unit) and ($unit ne '') and
       $$tagstack[-1] eq 'numericalresponse') {
       if ($target eq 'answer') {
    if ($ENV{'form.answer_output_mode'} eq 'tex') {
       $result.=&Apache::response::answer_part($$tagstack[-1],
       "Unit: \\verb|$unit|");
    } else {
       $result.=&Apache::response::answer_part($$tagstack[-1],
       "Unit: <b>$unit</b>");
    }
       } elsif ($target eq 'analyze') {
    push (@{ $Apache::lonhomework::analyze{"$part_id.unit"} },
         $unit);
       }
    }
    if ($type || $token->[1] eq 'stringresponse') {
       my $string='Case Insensitive';
       if ($type eq 'mc') {
    $string='Multiple Choice';
       } elsif ($type eq 'cs') {
    $string='Case Sensitive';
       } elsif ($type eq 'ci') {
    $string='Case Insensitive';
       } elsif ($type eq 'fml') {
    $string='Formula';
       }
       if ($target eq 'answer') {
    if ($ENV{'form.answer_output_mode'} eq 'tex') {
       $result.=&Apache::response::answer_part($$tagstack[-1],
     "\\textbf{$string}");
    } else {
       $result.=&Apache::response::answer_part($$tagstack[-1],
       "<b>$string</b>");
    }
       } elsif ($target eq 'analyze') {
    push (@{ $Apache::lonhomework::analyze{"$part_id.type"} },
         $type);
       }
    }
    if ($$tagstack[-1] eq 'formularesponse' && $target eq 'answer') {
       my $samples=&Apache::lonxml::get_param('samples',$parstack,$safeeval);
       $result.=&Apache::response::answer_part($$tagstack[-1],$samples);
    }
    if ($target eq 'answer') {
       $result.=&Apache::response::answer_footer($$tagstack[-1]);
    }
       }
       if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
    $target eq 'tex' || $target eq 'analyze') {
    &Apache::lonxml::increment_counter($increment);
       }
       &Apache::response::end_response;
       return $result;
 }  }
   
 sub start_numericalresponse {  sub get_table_sizes {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($format,$number_of_bubbles)=@_;
   my $id = &Apache::response::start_response($parstack,$safeeval);      my $max_val = 0;
   my $result;      if ($format=~m/^(\d+)E([^\d]*)(\d*)$/) {
   if ($target eq 'edit') {   $max_val=$1+$2+4;
     $result.=&Apache::edit::tag_start($target,$token,&Apache::lonxml::description($token));      } else {
     $result.=&Apache::edit::text_arg('Answer:','answer',$token);   $max_val=4;
     if ($token->[1] eq 'numericalresponse') {      }
       $result.=&Apache::edit::text_arg('Unit:','unit',$token,5);      $max_val = int(0.9*$ENV{'form.textwidth'}/(($max_val+6)*2));
       $result.=&Apache::edit::text_arg('Format:','format',$token,4);      my $celllength = 0.9*$ENV{'form.textwidth'}/$max_val-10;
     } elsif ($token->[1] eq 'stringresponse') {      my @table_range = ();
       $result.=&Apache::edit::select_arg('Type:','type',      my $number_of_tables = int($number_of_bubbles/$max_val);
  ['cs','ci','mc'],$token)      for (my $i=0;$i<$number_of_tables;$i++) {push @table_range,$max_val;}
     } elsif ($token->[1] eq 'formularesponse') {      if ($number_of_bubbles % $max_val != 0) {
       $result.=&Apache::edit::text_arg('Sample Points:','samples',$token,40);   $number_of_tables++;
     }   push @table_range,($number_of_bubbles % $max_val);
     $result.='</td></tr><tr><td colspan="3">';      }
   } elsif ($target eq 'modified') {      return ($celllength,$number_of_tables,@table_range);
     my $constructtag;  
     if ($token->[1] eq 'numericalresponse') {  
       $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,  
  'answer','unit','format');  
     } elsif ($token->[1] eq 'stringresponse') {  
       $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,  
  'answer','type');  
     } elsif ($token->[1] eq 'formularesponse') {  
       $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,  
  'answer','samples');  
     }  
     if ($constructtag) {  
       $result = &Apache::edit::rebuild_tag($token);  
       $result.=&Apache::edit::handle_insert();  
     }  
   } elsif ($target eq 'meta') {  
     $result=&Apache::response::meta_package_write('numericalresponse');  
   }  
   return $result;  
 }  }
   
 sub end_numericalresponse {  sub format_number {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($number,$format,$target)=@_;
   my $result = '';      my $ans;
   if ( $target eq 'grade' ) {      if ($format ne '') {
     if ( defined $ENV{'form.submitted'}) {   $ans = sprintf('%.'.$format,$number);
       &Apache::response::setup_params($$tagstack[-1]);      } else {
       $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);   my $format = '';
       my $partid = $Apache::inputtags::part;   #What is the number? (integer,decimal,floating point)
       my $id = $Apache::inputtags::response['-1'];   if ($number=~/^(\d*\.?\d*)(E|e)(\d*)$/) {
       my $response = $ENV{'form.HWVAL'.$id};      $format = 'e'.$2;
       if ( $response =~ /[^\s]/) {   } elsif ($number=~/^(\d*)\.(\d*)$/) {
  my %previous = &Apache::response::check_for_previous($response,$partid,$id);      $format = '4f';
  $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;   } elsif ($number=~/^(\d*)$/) {
  &Apache::lonxml::debug("submitted a $response<br>\n");      $format = 'd';
  &Apache::lonxml::debug($$parstack[$#$parstack] . "\n<br>");  
  $response =~ s/\\/\\\\/g;  
  $response =~ s/\'/\\\'/g;  
  &Apache::lonxml::debug("current $response");  
  my $expression="&caparesponse_check_list('".$response."','".  
   $$parstack[$#$parstack];  
  foreach my $key (keys(%Apache::inputtags::params)) {  
   $expression.= ';my $'. #'  
     $key.'="'.$Apache::inputtags::params{$key}.'"';  
  }  
  if ($$tagstack[-1] eq 'formularesponse') {  
   $expression.=';my $type="fml";';  
  } elsif ($$tagstack[-1] eq 'numericalresponse') {  
   $expression.=';my $type="float";';  
  }  
  $expression.="');";  
  $result = &Apache::run::run($expression,$safeeval);  
  my ($awards) = split /:/ , $result;  
  my ($ad) = &Apache::inputtags::finalizeawards(split /,/ , $awards);  
  if ( $previous{'used'} && ($previous{'award'} eq $ad) ) {  
   if ($previous{'last'}) {  
     push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');  
   } else {  
     push(@Apache::inputtags::previous,'PREVIOUSLY_USED');  
   }  
  }  
  $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad;  
  &Apache::lonxml::debug("$expression");  
  &Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");  
  $result='';  
       }  
     }  
   } elsif ($target eq 'web') {  
     my $award = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};  
     my $status = $Apache::inputtags::status['-1'];  
     if ($award =~ /^correct/ || $status eq "SHOW_ANSWER" ) {  
       my (@answers)=&Apache::lonxml::get_param_var('answer',$parstack,  
    $safeeval);  
       my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,  
    $safeeval);  
       my $unit=&Apache::lonxml::get_param_var('unit',$parstack,$safeeval);  
   
       $result="<br />The computer got ";  
   
       for (my $i=0; $i <= $#answers; $i++) {  
  my $answer=$answers[$i];  
  my $format;  
  if ($#formats > 0) {  
   $format=$formats[$i];  
  } else {  
   $format=$formats[0];  
  }   }
  if ((defined($format)) && ($format ne '')) {   $ans = sprintf('%.'.$format,$number);
   &Apache::lonxml::debug("formatting with :$format: answer :$answer:");      }
   $result.=sprintf('%.'.$format,$answer).',';      if ($target eq 'tex') {
  } else {   if ($ans =~ m/([0-9\.\-\+]+)E([0-9\-\+]+)/ ) {
   &Apache::lonxml::debug("no format answer :$answer:");      my $number = $1;
   $result.="$answer,";      my $power = $2;
       $power=~s/^\+//;
       $power=~s/^(-?)0+(\d+)//;
       $ans=$number.'$\times 10^{'.$1.$2.'}$'; #'stupidemacs
  }   }
       }      }
       chop $result;      return $ans;
       $result.=" $unit.<br></br>";  }
     }  
   } elsif ($target eq 'edit') {  sub make_numerical_bubbles {
     $result.='</td></tr>'.&Apache::edit::end_table;      my ($number_of_bubbles,$target,$answer,$format) =@_;
   } elsif ($target eq 'answer') {      my @bubble_values = ();
       my @factors = (1.13,1.17,1.25,1.33,1.45); #default values of factors
     my (@answers)=&Apache::lonxml::get_param_var('answer',$parstack,$safeeval);      my @powers = (1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0); #default values for powers
     my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,$safeeval);      &Apache::response::setrandomnumber();
     my $unit=&Apache::lonxml::get_param_var('unit',$parstack,$safeeval);      my $ind=&Math::Random::random_uniform_integer(1,0,$#powers);
     my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval);      my $power = $powers[$ind];
       $ind=&Math::Random::random_uniform_integer(1,0,$#factors);
     $result.=&Apache::response::answer_header($$tagstack[-1]);      my $factor = $factors[$ind];
     for(my $i=0;$i<=$#answers;$i++) {      for ($ind=0;$ind<$number_of_bubbles;$ind++) {
       my $ans=$answers[$i];   $bubble_values[$ind] = $answer*($factor**($power-$powers[$#powers-$ind]));
       my $fmt;   $bubble_values[$ind] = &format_number($bubble_values[$ind],
       if (@formats) {         $format,$target);
  if ($#formats) {  
   $fmt=$formats[$i];      }
  } else {      return @bubble_values;
   $fmt=$formats[0];  }
   
   sub get_tolrange {
       my ($ans,$tol)=@_;
       my ($high,$low);
       if ($tol =~ /%$/) {
    chop($tol);
    my $change=$ans*($tol/100.0);
    $high=$ans+$change;
    $low=$ans-$change;
       } else {
    $high=$ans+$tol;
    $low=$ans-$tol;
       }
       return ($high,$low);
   }
   
   sub get_sigrange {
       my ($sig)=@_;
       &Apache::lonxml::debug("Got a sig of :$sig:");
       my $sig_lbound;
       my $sig_ubound;
       if ($sig eq '') {
    $sig_lbound = 0; #SIG_LB_DEFAULT
    $sig_ubound =15; #SIG_UB_DEFAULT
       } else {
    ($sig_lbound,$sig_ubound) = split(/,/,$sig);
    if (!$sig_lbound) {
       $sig_lbound = 0; #SIG_LB_DEFAULT
       $sig_ubound =15; #SIG_UB_DEFAULT
  }   }
       }   if (!$sig_ubound) { $sig_ubound=$sig_lbound; }
       if ($fmt) { $ans = sprintf('%.'.$fmt,$ans); }      }
       $result.=&Apache::response::answer_part($$tagstack[-1],$ans);      return ($sig_ubound,$sig_lbound);
     }  
     if ($unit) {  
       $result.=&Apache::response::answer_part($$tagstack[-1],  
       '<b>'.$unit.'</b>');  
     }  
     if ($type || $token->[1] eq 'stringresponse') {  
       my $string='Case Insensitive';  
       if ($type eq 'mc') {  
  $string='Multiple Choice';  
       } elsif ($type eq 'cs') {  
  $string='Case Sensitive';  
       } elsif ($type eq 'ci') {  
  $string='Case Insensitive';  
       } elsif ($type eq 'fml') {  
  $string='Formula';  
       }  
       $result.=&Apache::response::answer_part($$tagstack[-1],  
       '<b>'.$string.'</b>');  
     }  
     if ($$tagstack[-1] eq 'formularesponse') {  
       my $samples=&Apache::lonxml::get_param('samples',$parstack,$safeeval);  
       $result.=&Apache::response::answer_part($$tagstack[-1],$samples);  
     }  
     $result.=&Apache::response::answer_footer($$tagstack[-1]);  
   }  
   &Apache::response::end_response;  
   return $result;  
 }  }
   
 sub start_stringresponse {  sub start_stringresponse {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $result;      my $result;
   if ($target eq 'meta') {      if ($target eq 'meta') {
     $result=&Apache::response::meta_package_write('stringresponse');   $result=&Apache::response::meta_package_write('stringresponse');
   } else {      } else {
     $result.=&start_numericalresponse(@_);   $result.=&start_numericalresponse(@_);
   }      }
   return $result;      return $result;
 }  }
   
 sub end_stringresponse {  sub end_stringresponse {
   return end_numericalresponse(@_);      return end_numericalresponse(@_);
 }  }
   
 sub start_formularesponse {  sub start_formularesponse {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $result;      my $result;
   if ($target eq 'meta') {      if ($target eq 'meta') {
     $result=&Apache::response::meta_package_write('formularesponse');   $result=&Apache::response::meta_package_write('formularesponse');
   } else {      } else {
     $result.=&start_numericalresponse(@_);   $result.=&start_numericalresponse(@_);
   }      }
   return $result;      return $result;
 }  }
   
 sub end_formularesponse {  sub end_formularesponse {
   return end_numericalresponse(@_);      return end_numericalresponse(@_);
 }  }
   
 1;  1;
 __END__  __END__
    
Removed from v.1.46  
changed lines
  Added in v.1.102

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