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- BUG#3149, need to stroe the order of responses, so we can show them in the right order, all user of lonnavmaps are good to go now.

    1: # The LearningOnline Network with CAPA
    2: # various response type definitons response definition
    3: #
    4: # $Id: response.pm,v 1.100 2004/06/29 22:32:14 albertel Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: package Apache::response;
   30: use strict;
   31: use Apache::lonlocal;
   32: 
   33: BEGIN {
   34:     &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse'));
   35: }
   36: 
   37: sub start_response {
   38:     my ($parstack,$safeeval)=@_;
   39:     my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
   40:     if ($id eq '') { $id = $Apache::lonxml::curdepth; }
   41:     if ($#Apache::inputtags::import > -1) {
   42: 	&Apache::lonxml::debug("Turning :$id: into");
   43: 	$id = join('_',@Apache::inputtags::import).'_'.$id;
   44: 	&Apache::lonxml::debug("New  :$id:");
   45:     }
   46:     push (@Apache::inputtags::response,$id);
   47:     push (@Apache::inputtags::responselist,$id);
   48:     @Apache::inputtags::inputlist=();
   49:     if ($Apache::inputtags::part eq '') {
   50: 	&Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
   51:     }
   52:     if ($Apache::inputtags::response_with_no_part &&
   53: 	$Apache::inputtags::part ne '0') {
   54: 	&Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
   55:     }
   56:     if ($Apache::inputtags::part eq '0') {
   57: 	$Apache::inputtags::response_with_no_part=1;
   58:     }
   59:     return $id;
   60: }
   61: 
   62: sub end_response {
   63:     #pop @Apache::inputtags::response;
   64:     @Apache::inputtags::inputlist=();
   65:     return '';
   66: }
   67: 
   68: sub start_hintresponse {
   69:     my ($parstack,$safeeval)=@_;
   70:     my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
   71:     if ($id eq '') { $id = $Apache::lonxml::curdepth; }
   72:     push (@Apache::inputtags::response,$id);
   73:     push (@Apache::inputtags::responselist,$id);
   74:     push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
   75:     return $id;
   76: }
   77: 
   78: sub end_hintresponse {
   79:     pop @Apache::inputtags::response;
   80:     if (defined($Apache::inputtags::paramstack[-1])) {
   81: 	%Apache::inputtags::params=
   82: 	    @{ pop(@Apache::inputtags::paramstack) };
   83:     }
   84:     return '';
   85: }
   86: 
   87: my @randomseeds;
   88: sub pushrandomnumber {
   89:     my $rand_alg=&Apache::lonnet::get_rand_alg();
   90:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
   91: 	$rand_alg eq '64bit2') {
   92: 	# do nothing
   93:     } else {
   94: 	my @seed=&Math::Random::random_get_seed();
   95: 	push (@randomseeds,\@seed);
   96:     }
   97:     &Apache::response::setrandomnumber();
   98: }
   99: sub poprandomnumber {
  100:     my $rand_alg=&Apache::lonnet::get_rand_alg();
  101:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
  102: 	$rand_alg eq '64bit2') {
  103: 	return;
  104:     }
  105:     my $seed=pop(@randomseeds);
  106:     if ($seed) {
  107: 	&Math::Random::random_set_seed(@$seed);
  108:     } else {
  109: 	&Apache::lonxml::error("Unable to restore random algorithm.");
  110:     }
  111: }
  112: sub setrandomnumber {
  113:     my $rndseed;
  114:     $rndseed=&Apache::structuretags::setup_rndseed();
  115:     if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
  116:     &Apache::lonxml::debug("randseed $rndseed");
  117:     #  $rndseed=unpack("%32i",$rndseed);
  118:     my $rand_alg=&Apache::lonnet::get_rand_alg();
  119:     my $rndmod;
  120:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
  121: 	$rand_alg eq '64bit2') {
  122: 	$rndmod=(&Apache::lonnet::numval($Apache::inputtags::part) << 10);
  123: 	if (defined($Apache::inputtags::response[-1])) {
  124: 	    $rndmod+=&Apache::lonnet::numval($Apache::inputtags::response[-1]);
  125: 	}
  126:     } else {
  127: 	$rndmod=(&Apache::lonnet::numval2($Apache::inputtags::part) << 10);
  128: 	if (defined($Apache::inputtags::response[-1])) {
  129: 	    $rndmod+=&Apache::lonnet::numval2($Apache::inputtags::response[-1]);
  130: 	}
  131:     }
  132:     if ($rndseed =~/([,:])/) {
  133: 	my $char=$1;
  134: 	use integer;
  135: 	my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
  136: 	$num1+=$rndmod;
  137: 	$num2+=$rndmod;
  138: 	$rndseed=$num1.$char.$num2;
  139:     } else {
  140: 	$rndseed+=$rndmod;
  141:     }
  142:     &Apache::lonnet::setup_random_from_rndseed($rndseed);
  143:     &Apache::lonxml::debug("randseed $rndseed");
  144:     return '';
  145: }
  146: 
  147: sub meta_parameter_write {
  148:     my ($name,$type,$default,$display)=@_;
  149:     my $partref=$Apache::inputtags::part;
  150:     my $result='<parameter part="'.$Apache::inputtags::part.'"';
  151:     if (defined($Apache::inputtags::response[-1])) {
  152: 	$result.=            ' id="'.$Apache::inputtags::response[-1].'"';
  153: 	$partref.='_'.$Apache::inputtags::response[-1];
  154:     }
  155:     $result.=            ' name="'.$name.'"'.
  156:                          ' type="'.$type.'"'.
  157: (defined($default)?' default="'.$default.'"':'').
  158: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
  159:              .'></parameter>'
  160:              ."\n";
  161:     return $result;
  162: }
  163: 
  164: sub meta_package_write {
  165:     my $name=shift;
  166:     my $result = '<parameter part="'.$Apache::inputtags::part.'"';
  167:     if(defined($Apache::inputtags::response[-1])) {
  168: 	$result.= ' id="'.$Apache::inputtags::response[-1].'"';
  169:     }
  170:     $result.=' package="'.$name.'"></parameter>'."\n";
  171:     return $result;
  172: }
  173: 
  174: sub meta_stores_write {
  175:     my ($name,$type,$display)=@_;
  176:     my $partref=$Apache::inputtags::part;
  177:     my $result = '<stores part="'.$Apache::inputtags::part.'"';
  178:     if (defined($Apache::inputtags::response[-1])) {
  179: 	$result.=           ' id="'.$Apache::inputtags::response[-1].'"';
  180: 	$partref.='_'.$Apache::inputtags::response[-1];
  181:     }	
  182:     $result.=          ' name="'.$name.'"'.
  183:                        ' type="'.$type.'"'.
  184: 	            ' display="'.$display.' [Part: '.$partref.']"'.
  185: 		      "></stores>\n";
  186: }
  187: 
  188: sub mandatory_part_meta {
  189: #
  190: # Autogenerate metadata for mandatory
  191: # input (from RAT or lonparmset) and 
  192: # output (to lonspreadsheet)
  193: # of each part
  194: #
  195:     return
  196: #    &meta_parameter_write('opendate','date_start','',
  197: #                          'Opening Date').
  198: #    &meta_parameter_write('duedate','date_end','',
  199: #                          'Due Date').
  200: #    &meta_parameter_write('answerdate','date_start','',
  201: #                          'Show Answer Date').
  202: #    &meta_parameter_write('weight','int_zeropos','',
  203: #                          'Available Points').
  204: #    &meta_parameter_write('maxtries','int_pos','',
  205: #                          'Maximum Number of Tries').
  206: 	&meta_package_write('part').
  207:         &meta_stores_write('solved','string',
  208: 			   'Problem Status').
  209:         &meta_stores_write('tries','int_zeropos',
  210: 			   'Number of Attempts').
  211:         &meta_stores_write('awarded','float',
  212: 			   'Partial Credit Factor');
  213: #
  214: # Note: responseid-specific data 'submission' and 'awarddetail'
  215: # not available to spreadsheet -> skip here
  216: #
  217: }
  218: 
  219: sub meta_part_order {
  220:     if (@Apache::inputtags::partlist) {
  221: 	my @parts=@Apache::inputtags::partlist;
  222: 	shift(@parts);
  223: 	return '<partorder>'.join(',',@parts).'</partorder>'."\n";
  224:     } else {
  225: 	return '<partorder>0</partorder>'."\n";
  226:     }
  227: }
  228: 
  229: sub meta_response_order {
  230:     if (@Apache::inputtags::responselist) {
  231: 	return '<responseorder>'.join(',',@Apache::inputtags::responselist).
  232: 	    '</responseorder>'."\n";
  233:     }
  234: }
  235: 
  236: sub check_for_previous {
  237:     my ($curresponse,$partid,$id) = @_;
  238:     my %previous;
  239:     $previous{'used'} = 0;
  240:     foreach my $key (sort(keys(%Apache::lonhomework::history))) {
  241: 	if ($key =~ /resource\.$partid\.$id\.submission$/) {
  242: 	    &Apache::lonxml::debug("Trying $key");
  243: 	    my $pastresponse=$Apache::lonhomework::history{$key};
  244: 	    if ($pastresponse eq $curresponse) {
  245: 		$previous{'used'} = 1;
  246: 		my $history;
  247: 		if ( $key =~ /^(\d+):/ ) {
  248: 		    $history=$1;
  249: 		    $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
  250: 		    $previous{'last'}='0';
  251: 		    push(@{ $previous{'version'} },$history);
  252: 		} else {
  253: 		    $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
  254: 		    $previous{'last'}='1';
  255: 		}
  256: 		if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN';	}
  257: 		&Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
  258: 	    }
  259: 	}
  260:     }
  261:     &Apache::lonhomework::showhash(%previous);
  262:     return %previous;
  263: }
  264: 
  265: sub handle_previous {
  266:     my ($previous,$ad)=@_;
  267:     if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
  268: 	if ($$previous{'last'}) {
  269: 	    push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
  270: 	} else {
  271: 	    push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
  272: 	}
  273: 	push(@Apache::inputtags::previous_version,$$previous{'version'});
  274:     }
  275: }
  276: 
  277: sub view_or_modify {
  278:     my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
  279:     my $myself=0;
  280:     if ( ($name eq $ENV{'user.name'}) && ($domain eq $ENV{'user.domain'}) ) {
  281: 	$myself=1;
  282:     }
  283:     my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
  284:     my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
  285:     if ($mgr) { return "M"; }
  286:     if ($vgr) { return "V"; }
  287:     if ($myself) { return "V"; }
  288:     return '';
  289: }
  290: 
  291: sub start_dataresponse {
  292:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  293:     my $id = &Apache::response::start_response($parstack,$safeeval);
  294:     my $result;
  295:     if ($target eq 'web') {
  296: 	$result = $token->[2]->{'display'}.':';
  297:     } elsif ($target eq 'meta') {
  298: 	$result = &Apache::response::meta_stores_write($token->[2]->{'name'},
  299: 						       $token->[2]->{'type'},
  300: 						       $token->[2]->{'display'});
  301: 	$result .= &Apache::response::meta_package_write('dataresponse');
  302:     }
  303:     return $result;
  304: }
  305: 
  306: sub end_dataresponse {
  307:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  308:     my $result;
  309:     if ( $target eq 'web' ) {
  310:     } elsif ($target eq 'grade' ) {
  311: 	if ( defined $ENV{'form.submitted'}) {
  312: 	    my ($symb,$courseid,$domain,$name)=&Apache::lonxml::whichuser();
  313: 	    my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
  314: 	    if ($allowed) {
  315: 		&Apache::response::setup_params('dataresponse',$safeeval);
  316: 		my $partid = $Apache::inputtags::part;
  317: 		my $id = $Apache::inputtags::response['-1'];
  318: 		my $response = $ENV{'form.HWVAL_'.$id};
  319: 		my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
  320: 		if ( $response =~ /[^\s]/) {
  321: 		    $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
  322: 		    $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
  323: 		    $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
  324: 		}
  325: 	    } else {
  326: 		$result='Not Permitted to change values.'
  327: 	    }
  328: 	}
  329:     }
  330:     &Apache::response::end_response;
  331:     return $result;
  332: }
  333: 
  334: sub decide_package {
  335:     my ($tagstack)=@_;
  336:     my $package;
  337:     if ($$tagstack[-1] eq 'parameter') {
  338: 	$package='part';
  339:     } else {
  340: 	my $i=-1;
  341: 	while (defined($$tagstack[$i])) {
  342: 	    if ($$tagstack[$i] =~ /(response|hint)$/) {
  343: 		$package=$$tagstack[$i];
  344: 		last;
  345: 	    }
  346: 	    $i--;
  347: 	}
  348:     }
  349:     return $package;
  350: }
  351: 
  352: sub start_responseparam {
  353:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  354:     my $result='';
  355:     if ($target eq 'meta') {
  356: 	$result = &meta_parameter_write($token->[2]->{'name'},
  357: 					$token->[2]->{'type'},
  358: 					$token->[2]->{'default'},
  359: 					$token->[2]->{'description'});
  360:     } elsif ($target eq 'edit') {
  361: 	$result.=&Apache::edit::tag_start($target,$token);
  362: 	my $optionlist;
  363: 	my $package=&decide_package($tagstack);
  364: 	foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
  365: 	    if ($key =~ /^\Q$package\E&(.*)&display$/) {
  366: 		$optionlist.='<option value="'.$1.'">'.
  367: 		    $Apache::lonnet::packagetab{$key}.'</option>';
  368: 	    }
  369: 	}
  370: 	if (defined($optionlist)) {
  371: 	    $result.='Use template: <select name="'.
  372: 		&Apache::edit::html_element_name('parameter_package').'">'.
  373: 		    '<option value=""></option>'.$optionlist.'</select><br />';
  374: 	}
  375: 	$result.=&Apache::edit::text_arg('Name:','name',$token).
  376: 	    &Apache::edit::text_arg('Type:','type',$token).
  377: 		&Apache::edit::text_arg('Description:','description',$token).
  378: 		    &Apache::edit::text_arg('Default:','default',$token).
  379: 			"</td></tr>";
  380: 	$result.=&Apache::edit::end_table;
  381:     } elsif ($target eq 'modified') {
  382: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  383: 						     $safeeval,'name','type',
  384: 						     'description','default');
  385: 	my $element=&Apache::edit::html_element_name('parameter_package');
  386: 	if (defined($ENV{"form.$element"}) && $ENV{"form.$element"} ne '') {
  387: 	    my $name=$ENV{"form.$element"};
  388: 	    my $tag=&decide_package($tagstack);
  389: 	    $token->[2]->{'name'}=$name;
  390: 	    $token->[2]->{'type'}=
  391: 		$Apache::lonnet::packagetab{"$tag&$name&type"};
  392: 	    $token->[2]->{'description'}=
  393: 		$Apache::lonnet::packagetab{"$tag&$name&display"};
  394: 	    $token->[2]->{'default'}=
  395: 		$Apache::lonnet::packagetab{"$tag&$name&default"};
  396: 	    $constructtag=1;
  397: 	}
  398: 	if ($constructtag) {
  399: 	    $result = &Apache::edit::rebuild_tag($token);
  400: 	    $result.=&Apache::edit::handle_insert();
  401: 	}
  402:     } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
  403: 	     $target eq 'tex' || $target eq 'analyze' ) {
  404: 	if ($ENV{'request.state'} eq 'construct') {
  405: 	    my $name   =&Apache::lonxml::get_param('name',$parstack,$safeeval);
  406: 	    my $default=&Apache::lonxml::get_param('default',$parstack,
  407: 						     $safeeval);
  408: 	    if ($name) {$Apache::inputtags::params{$name}=$default;}
  409: 	}
  410:     }
  411:     return $result;
  412: }
  413: 
  414: sub end_responseparam {
  415:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  416:     if ($target eq 'edit') { return ('','no'); }
  417:     return '';
  418: }
  419: 
  420: sub start_parameter {
  421:     my $result = &start_responseparam(@_);
  422:     return $result;
  423: }
  424: 
  425: sub end_parameter {
  426:     my $result = &end_responseparam(@_);
  427:     return $result;
  428: }
  429: 
  430: sub reset_params {
  431:     %Apache::inputtags::params=();
  432: }
  433: 
  434: sub setup_params {
  435:     my ($tag,$safeeval) = @_;
  436: 
  437:     if ($ENV{'request.state'} eq 'construct') { return; }
  438:     my %paramlist=();
  439:     foreach my $key (keys(%Apache::lonnet::packagetab)) {
  440: 	if ($key =~ /^$tag/) {
  441: 	    my ($package,$name) = split(/&/,$key);
  442: 	    $paramlist{$name}=1;
  443: 	}
  444:     }
  445:     foreach my $key (keys(%paramlist)) {
  446: 	my $entry= 'resource.'.$Apache::inputtags::part;
  447: 	if (defined($Apache::inputtags::response[-1])) {
  448: 	    $entry.='_'.$Apache::inputtags::response[-1];
  449: 	}
  450: 	$entry.='.'.$key;
  451: 	&Apache::lonxml::debug("looking for $entry");
  452: 	my $value = &Apache::lonnet::EXT("$entry");
  453: 	&Apache::lonxml::debug("$key has value :$value:");
  454: 	if ($value eq 'con_lost' || $value =~ /^error:/) {
  455: 	    &Apache::lonxml::debug("using nothing");
  456: 	    $Apache::inputtags::params{$key}='';
  457: 	} else {
  458: 	    my $string="{return qq\0".$value."\0}";
  459: 	    my $newvalue=&Apache::run::run($string,$safeeval,1);
  460: 	    if (defined($newvalue)) { $value=$newvalue; }
  461: 	    $Apache::inputtags::params{$key}=$value;
  462: 	}
  463:     }
  464: }
  465: 
  466: sub answer_header {
  467:     my ($type) = @_;
  468:     my $result;
  469:     if ($ENV{'form.answer_output_mode'} eq 'tex') {
  470: 	$result = ' \vskip 0 mm \begin{tabular}{|c|}\hline Answer for Part: \verb|'.
  471:                   $Apache::inputtags::part.'| \\\\ \hline ';
  472:     } else {
  473: 	$result = '<table border="1"><tr><td>Answer for Part:'.
  474: 	    $Apache::inputtags::part. '</td>'."\n";
  475:     }
  476:     return $result;
  477: }
  478: 
  479: sub answer_part {
  480:     my ($type,$answer) = @_;
  481:     my $result;
  482:     if ($ENV{'form.answer_output_mode'} eq 'tex') {
  483: 	$result = ' \verb|'.$answer.'|\\\\ \hline ';
  484:     } else {
  485: 	$result = '<td>'.$answer.'</td>';
  486:     }
  487:     return $result;
  488: }
  489: 
  490: sub answer_footer {
  491:     my ($type) = @_;
  492:     my $result;
  493:     if ($ENV{'form.answer_output_mode'} eq 'tex') {
  494: 	$result = ' \end{tabular} \vskip 0 mm ';
  495:     } else {
  496: 	$result = '</tr></table>';
  497:     }
  498:     return $result;
  499: }
  500: 
  501: sub showallfoils {
  502:     my $return=0;
  503:     if (defined($ENV{'form.showallfoils'}) &&
  504: 	$ENV{'request.state'} eq 'construct') {
  505: 	$return=1;
  506:     }
  507:     return $return;
  508: }
  509: 
  510: sub getresponse {
  511:     my ($temp,$resulttype)=@_;
  512:     my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
  513:     my $response;
  514:     if (!defined($temp)) {
  515: 	$temp=1;
  516:     } else {
  517: 	$formparm.=":$temp";
  518:     }
  519:     my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
  520: 		    'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
  521: 		    'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
  522: 		    'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
  523:     if ($ENV{'form.submitted'} eq 'scantron') {
  524: 	my $part  = $Apache::inputtags::part;
  525: 	my $id    = $Apache::inputtags::response[-1];
  526: 	$response = $ENV{'scantron.'.($Apache::lonxml::counter+$temp-1).
  527: 			 '.answer'};
  528: 	# save bubbled letter for later
  529: 	$Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
  530: 	    $response;
  531: 	if ($resulttype ne 'letter') {
  532: 	    $response = $let_to_num{$response};
  533: 	}
  534:     } else {
  535: 	$response = $ENV{$formparm};
  536:     }
  537:     return $response;
  538: }
  539: 
  540: sub repetition {
  541:     my $id = $Apache::inputtags::part;
  542:     my $weight = &Apache::lonnet::EXT("resource.$id.weight");
  543:     my $repetition = int $weight/9;
  544:     if ($weight % 9 != 0) {$repetition++;} 
  545:     return $repetition;
  546: }
  547: 
  548: sub scored_response {
  549:     my ($part,$id)=@_;
  550:     my $repetition=&repetition();
  551:     my $score=0;
  552:     for (my $i=0;$i<$repetition;$i++) {
  553: 	my $increase=&Apache::response::getresponse($i+1);
  554: 	if ($increase ne '') { $score+=$increase+1; }
  555:     }
  556:     my $weight = &Apache::lonnet::EXT("resource.$part.weight");
  557:     if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
  558:     my $pcr=$score/$weight;
  559:     $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
  560:     $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
  561: 	'ASSIGNED_SCORE';
  562:     return $repetition;
  563: }
  564: 
  565: sub whichorder {
  566:     my ($max,$randomize,$showall,$hash)=@_;
  567:     #&Apache::lonxml::debug("man $max randomize $randomize");
  568:     if (!defined(@{ $$hash{'names'} })) { return; }
  569:     my @names = @{ $$hash{'names'} };
  570:     my @whichopt =();
  571:     my (%top,@toplist,%bottom,@bottomlist);
  572:     if (!($showall || ($randomize eq 'no'))) {
  573: 	my $current=0;
  574: 	foreach my $name (@names) {
  575: 	    $current++;
  576: 	    if ($$hash{"$name.location"} eq 'top') {
  577: 		$top{$name}=$current;
  578: 	    } elsif ($$hash{"$name.location"} eq 'bottom') {
  579: 		$bottom{$name}=$current;
  580: 	    }
  581: 	}
  582:     }
  583:     my $topcount=0;
  584:     my $bottomcount=0;
  585:     while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
  586: 	   && ($#names > -1)) {
  587: 	#&Apache::lonxml::debug("Have $#whichopt max is $max");
  588: 	my $aopt;
  589: 	if ($showall || ($randomize eq 'no')) {
  590: 	    $aopt=0;
  591: 	} else {
  592: 	    $aopt=int(&Math::Random::random_uniform() * ($#names+1));
  593: 	}
  594: 	#&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
  595: 	$aopt=splice(@names,$aopt,1);
  596: 	#&Apache::lonxml::debug("Picked $aopt");
  597: 	if ($top{$aopt}) {
  598: 	    $toplist[$top{$aopt}]=$aopt;
  599: 	    $topcount++;
  600: 	} elsif ($bottom{$aopt}) {
  601: 	    $bottomlist[$bottom{$aopt}]=$aopt;
  602: 	    $bottomcount++;
  603: 	} else {
  604: 	    push (@whichopt,$aopt);
  605: 	}
  606:     }
  607:     for (my $i=0;$i<=$#toplist;$i++) {
  608: 	if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
  609:     }
  610:     for (my $i=0;$i<=$#bottomlist;$i++) {
  611: 	if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
  612:     }
  613:     return @whichopt;
  614: }
  615: 
  616: sub show_answer {
  617:     my $part   = $Apache::inputtags::part;
  618:     my $award  = $Apache::lonhomework::history{"resource.$part.solved"};
  619:     my $status = $Apache::inputtags::status[-1];
  620:     return  ( ($award =~ /^correct/
  621: 	       && lc($Apache::lonhomework::problemstatus) ne 'no')
  622: 	      || $status eq "SHOW_ANSWER");
  623: }
  624: 
  625: sub analyze_store_foilgroup {
  626:     my ($shown,$attrs)=@_;
  627:     my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
  628:     foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
  629: 	if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
  630: 	push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
  631: 	foreach my $attr (@$attrs) {
  632: 	    $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
  633: 		$Apache::response::foilgroup{"$name.".$attr};
  634: 	}
  635:     }
  636:     push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
  637: }
  638: 
  639: sub check_if_computed {
  640:     my ($token,$parstack,$safeeval,$name)=@_;
  641:     my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
  642:     if ($value ne $token->[2]{$name}) {
  643: 	my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
  644: 	$Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
  645:     }
  646: }
  647: 
  648: sub pick_foil_for_concept {
  649:     my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
  650:     if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
  651:     my @names = @{ $Apache::response::conceptgroup{'names'} };
  652:     my $pick=int(&Math::Random::random_uniform() * ($#names+1));
  653:     my $name=$names[$pick];
  654:     push @{ $Apache::response::foilgroup{'names'} }, $name;
  655:     foreach my $attr (@$attrs) {
  656: 	$Apache::response::foilgroup{"$name.".$attr} =
  657: 	    $Apache::response::conceptgroup{"$name.".$attr};
  658:     }
  659:     my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
  660:     $Apache::response::foilgroup{"$name.concept"} = $concept;
  661:     &Apache::lonxml::debug("Selecting $name in $concept");
  662:     my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
  663:     if ($target eq 'analyze') {
  664: 	push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
  665: 	      $concept);
  666: 	$Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
  667: 	    $Apache::response::conceptgroup{'names'};
  668: 	foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
  669: 	    push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
  670: 		  $name);
  671: 	    foreach my $attr (@$attrs) {
  672: 		$Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
  673: 		    $Apache::response::conceptgroup{"$name.$attr"};
  674: 	    }
  675: 	}
  676:     }
  677:     push(@{ $hinthash->{"$part_id.concepts"} },$concept);
  678:     $hinthash->{"$part_id.concept.$concept"}=
  679: 	$Apache::response::conceptgroup{'names'};
  680: 
  681: }
  682: 
  683: sub get_response_param {
  684:     my ($id,$name,$default)=@_;
  685:     my $parameter;
  686:     if ($ENV{'request.state'} eq 'construct' &&
  687: 	defined($Apache::inputtags::params{$name})) {
  688: 	$parameter=$Apache::inputtags::params{$name};
  689:     } else {
  690: 	$parameter=&Apache::lonnet::EXT("resource.$id.$name");
  691:     }
  692:     if (!defined($parameter) ||	$parameter eq '') {
  693: 	$parameter = $default;
  694:     }
  695:     return $parameter;
  696: }
  697: 
  698: 1;
  699: __END__
  700: