Annotation of loncom/homework/response.pm, revision 1.246

1.38      albertel    1: # The LearningOnline Network with CAPA
1.1       albertel    2: # various response type definitons response definition
1.53      albertel    3: #
1.246   ! raeburn     4: # $Id: response.pm,v 1.245 2018/03/30 23:50:13 raeburn Exp $
1.53      albertel    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: #
1.5       www        28: 
1.208     jms        29: =pod
                     30: 
                     31: =head1 NAME
                     32: 
1.218     raeburn    33: Apache::response.pm
1.208     jms        34: 
                     35: =head1 SYNOPSIS
                     36: 
                     37: This is part of the LearningOnline Network with CAPA project
                     38: described at http://www.lon-capa.org.
                     39: 
                     40: 
                     41: =head1 NOTABLE SUBROUTINES
                     42: 
                     43: =over
                     44: 
                     45: =item 
                     46: 
                     47: =back
                     48: 
                     49: =cut
                     50: 
                     51: 
1.1       albertel   52: package Apache::response;
                     53: use strict;
1.93      albertel   54: use Apache::lonlocal;
1.120     albertel   55: use Apache::lonnet;
1.228     raeburn    56: use Apache::inputtags();
1.153     www        57: use Apache::lonmaxima();
1.214     www        58: use Apache::lonr();
1.238     raeburn    59: use Apache::lontexconvert();
1.1       albertel   60: 
1.57      harris41   61: BEGIN {
1.139     www        62:     &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
1.1       albertel   63: }
                     64: 
1.13      albertel   65: sub start_response {
1.73      albertel   66:     my ($parstack,$safeeval)=@_;
1.136     albertel   67:     my $id = &Apache::lonxml::get_id($parstack,$safeeval);
1.73      albertel   68:     if ($#Apache::inputtags::import > -1) {
                     69: 	&Apache::lonxml::debug("Turning :$id: into");
                     70: 	$id = join('_',@Apache::inputtags::import).'_'.$id;
                     71: 	&Apache::lonxml::debug("New  :$id:");
                     72:     }
                     73:     push (@Apache::inputtags::response,$id);
                     74:     push (@Apache::inputtags::responselist,$id);
                     75:     @Apache::inputtags::inputlist=();
1.101     albertel   76:     if ($Apache::inputtags::part eq '' && 
                     77: 	!$Apache::lonhomework::ignore_response_errors) {
1.97      albertel   78: 	&Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
1.92      albertel   79:     }
                     80:     if ($Apache::inputtags::response_with_no_part &&
                     81: 	$Apache::inputtags::part ne '0') {
1.97      albertel   82: 	&Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
1.92      albertel   83:     }
                     84:     if ($Apache::inputtags::part eq '0') {
                     85: 	$Apache::inputtags::response_with_no_part=1;
                     86:     }
1.73      albertel   87:     return $id;
1.13      albertel   88: }
                     89: 
                     90: sub end_response {
1.79      albertel   91:     #pop @Apache::inputtags::response;
1.73      albertel   92:     @Apache::inputtags::inputlist=();
                     93:     return '';
1.13      albertel   94: }
                     95: 
1.41      albertel   96: sub start_hintresponse {
1.73      albertel   97:     my ($parstack,$safeeval)=@_;
1.136     albertel   98:     my $id = &Apache::lonxml::get_id($parstack,$safeeval);
1.123     albertel   99:     push (@Apache::inputtags::hint,$id);
                    100:     push (@Apache::inputtags::hintlist,$id);
1.73      albertel  101:     push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
                    102:     return $id;
1.41      albertel  103: }
                    104: 
                    105: sub end_hintresponse {
1.123     albertel  106:     pop @Apache::inputtags::hint;
1.73      albertel  107:     if (defined($Apache::inputtags::paramstack[-1])) {
                    108: 	%Apache::inputtags::params=
                    109: 	    @{ pop(@Apache::inputtags::paramstack) };
                    110:     }
                    111:     return '';
1.41      albertel  112: }
                    113: 
1.99      albertel  114: my @randomseeds;
                    115: sub pushrandomnumber {
                    116:     my $rand_alg=&Apache::lonnet::get_rand_alg();
                    117:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
                    118: 	$rand_alg eq '64bit2') {
                    119: 	# do nothing
                    120:     } else {
                    121: 	my @seed=&Math::Random::random_get_seed();
1.127     albertel  122: 	push(@randomseeds,\@seed);
1.99      albertel  123:     }
1.127     albertel  124:     &Apache::response::setrandomnumber(@_);
1.99      albertel  125: }
                    126: sub poprandomnumber {
                    127:     my $rand_alg=&Apache::lonnet::get_rand_alg();
                    128:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
                    129: 	$rand_alg eq '64bit2') {
                    130: 	return;
                    131:     }
                    132:     my $seed=pop(@randomseeds);
                    133:     if ($seed) {
                    134: 	&Math::Random::random_set_seed(@$seed);
                    135:     } else {
                    136: 	&Apache::lonxml::error("Unable to restore random algorithm.");
                    137:     }
                    138: }
1.117     albertel  139: 
1.26      albertel  140: sub setrandomnumber {
1.221     raeburn   141:     my ($ignore_id2,$target,$rndseed) = @_;
                    142:     if (!defined($rndseed)) {
                    143:         $rndseed=&Apache::structuretags::setup_rndseed(undef,$target);
                    144:     } 
1.88      albertel  145:     if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
1.73      albertel  146:     &Apache::lonxml::debug("randseed $rndseed");
                    147:     #  $rndseed=unpack("%32i",$rndseed);
1.99      albertel  148:     my $rand_alg=&Apache::lonnet::get_rand_alg();
1.126     albertel  149:     my ($rndmod,$rndmod2);
1.119     albertel  150: 
                    151:     my ($id1,$id2,$shift_amt);
                    152:     if ($Apache::lonhomework::parsing_a_problem) {
                    153: 	$id1=$Apache::inputtags::part;
                    154: 	if (defined($Apache::inputtags::response[-1])) {
                    155: 	    $id2=$Apache::inputtags::response[-1];
                    156: 	}
                    157: 	$shift_amt=scalar(@Apache::inputtags::responselist);
                    158:     } elsif ($Apache::lonhomework::parsing_a_task) {
1.141     albertel  159: 	$id1=&Apache::bridgetask::get_dim_id();
                    160: 	if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
                    161: 	    $id2=$Apache::bridgetask::instance{$id1}[-1];
1.142     albertel  162: 	    $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
                    163: 	} else {
                    164: 	    $shift_amt=0;
1.119     albertel  165: 	}
                    166:     } 
                    167:     &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
1.99      albertel  168:     if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
                    169: 	$rand_alg eq '64bit2') {
1.119     albertel  170: 	$rndmod=(&Apache::lonnet::numval($id1) << 10);
                    171: 	if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
1.110     albertel  172:     } elsif ($rand_alg eq '64bit3') {
1.119     albertel  173: 	$rndmod=(&Apache::lonnet::numval2($id1) << 10);
                    174: 	if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
1.126     albertel  175:     } elsif ($rand_alg eq '64bit4') {
1.119     albertel  176: 	my $shift=(4*$shift_amt)%30;
                    177: 	$rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
                    178: 	if (defined($id2)) {
                    179: 	    $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
1.110     albertel  180: 	}
1.126     albertel  181:     } else {
                    182: 	($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
1.99      albertel  183:     }
                    184:     if ($rndseed =~/([,:])/) {
                    185: 	my $char=$1;
                    186: 	use integer;
                    187: 	my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
                    188: 	$num1+=$rndmod;
1.126     albertel  189: 	$num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
1.109     albertel  190: 	if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
1.99      albertel  191: 	$rndseed=$num1.$char.$num2;
                    192:     } else {
1.74      albertel  193: 	$rndseed+=$rndmod;
1.109     albertel  194: 	if($Apache::lonnet::_64bit) {
                    195: 	    use integer;
                    196: 	    $rndseed=(($rndseed<<32)>>32);
                    197: 	}
1.74      albertel  198:     }
1.111     albertel  199:     &Apache::lonxml::debug("randseed $rndmod $rndseed");
1.74      albertel  200:     &Apache::lonnet::setup_random_from_rndseed($rndseed);
1.73      albertel  201:     return '';
1.26      albertel  202: }
                    203: 
1.7       www       204: sub meta_parameter_write {
1.38      albertel  205:     my ($name,$type,$default,$display)=@_;
1.41      albertel  206:     my $partref=$Apache::inputtags::part;
                    207:     my $result='<parameter part="'.$Apache::inputtags::part.'"';
                    208:     if (defined($Apache::inputtags::response[-1])) {
1.73      albertel  209: 	$result.=            ' id="'.$Apache::inputtags::response[-1].'"';
                    210: 	$partref.='_'.$Apache::inputtags::response[-1];
1.41      albertel  211:     }
                    212:     $result.=            ' name="'.$name.'"'.
                    213:                          ' type="'.$type.'"'.
1.89      albertel  214: (defined($default)?' default="'.$default.'"':'').
                    215: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
1.41      albertel  216:              .'></parameter>'
                    217:              ."\n";
                    218:     return $result;
1.33      www       219: }
                    220: 
                    221: sub meta_package_write {
                    222:     my $name=shift;
1.41      albertel  223:     my $result = '<parameter part="'.$Apache::inputtags::part.'"';
                    224:     if(defined($Apache::inputtags::response[-1])) {
1.73      albertel  225: 	$result.= ' id="'.$Apache::inputtags::response[-1].'"';
1.41      albertel  226:     }
                    227:     $result.=' package="'.$name.'"></parameter>'."\n";
                    228:     return $result;
1.7       www       229: }
                    230: 
                    231: sub meta_stores_write {
1.10      www       232:     my ($name,$type,$display)=@_;
1.41      albertel  233:     my $partref=$Apache::inputtags::part;
                    234:     my $result = '<stores part="'.$Apache::inputtags::part.'"';
                    235:     if (defined($Apache::inputtags::response[-1])) {
1.73      albertel  236: 	$result.=           ' id="'.$Apache::inputtags::response[-1].'"';
                    237: 	$partref.='_'.$Apache::inputtags::response[-1];
1.41      albertel  238:     }	
                    239:     $result.=          ' name="'.$name.'"'.
                    240:                        ' type="'.$type.'"'.
                    241: 	            ' display="'.$display.' [Part: '.$partref.']"'.
                    242: 		      "></stores>\n";
1.7       www       243: }
                    244: 
1.207     jms       245: =pod
                    246: 
1.210     raeburn   247: =item mandatory_part_meta()
1.207     jms       248: 
                    249: Autogenerate metadata for mandatory
1.210     raeburn   250: input (from RAT or lonparmset) and
1.207     jms       251: output (to lonspreadsheet)
                    252: of each part
                    253: 
                    254: Note: responseid-specific data 'submission' and 'awarddetail'
                    255: not available to spreadsheet -> skip here
                    256: 
                    257: =cut
                    258: 
1.210     raeburn   259: 
                    260: sub mandatory_part_meta {
                    261:     return &meta_package_write('part').
                    262:            &meta_stores_write('solved','string','Problem Status').
                    263:            &meta_stores_write('tries','int_zeropos','Number of Attempts').
                    264:            &meta_stores_write('awarded','float','Partial Credit Factor');
1.86      albertel  265: }
                    266: 
                    267: sub meta_part_order {
1.245     raeburn   268:     my ($type) = @_; 
1.86      albertel  269:     if (@Apache::inputtags::partlist) {
                    270: 	my @parts=@Apache::inputtags::partlist;
1.245     raeburn   271:         unless ($type eq 'library') {
                    272: 	    shift(@parts);
                    273:         }
1.100     albertel  274: 	return '<partorder>'.join(',',@parts).'</partorder>'."\n";
1.245     raeburn   275:     } elsif ($type eq 'library') {
                    276:         return '<partorder></partorder>'."\n";
1.86      albertel  277:     } else {
1.100     albertel  278: 	return '<partorder>0</partorder>'."\n";
                    279:     }
                    280: }
                    281: 
                    282: sub meta_response_order {
                    283:     if (@Apache::inputtags::responselist) {
                    284: 	return '<responseorder>'.join(',',@Apache::inputtags::responselist).
                    285: 	    '</responseorder>'."\n";
1.86      albertel  286:     }
1.14      albertel  287: }
                    288: 
1.15      albertel  289: sub check_for_previous {
1.219     raeburn   290:     my ($curresponse,$partid,$id,$last,$type) = @_;
1.73      albertel  291:     my %previous;
                    292:     $previous{'used'} = 0;
1.221     raeburn   293:     my $questiontype = $Apache::lonhomework::type;
                    294:     my $curr_rndseed = $env{'form.'.$partid.'.rndseed'};
1.73      albertel  295:     foreach my $key (sort(keys(%Apache::lonhomework::history))) {
1.212     raeburn   296: 	if ($key =~ /resource\.\Q$partid\E\.\Q$id\E\.submission$/) {
1.160     albertel  297: 	    if ( $last && $key =~ /^(\d+):/ ) {
                    298: 		next if ($1 >= $last);
                    299: 	    }
1.73      albertel  300: 	    &Apache::lonxml::debug("Trying $key");
                    301: 	    my $pastresponse=$Apache::lonhomework::history{$key};
                    302: 	    if ($pastresponse eq $curresponse) {
                    303: 		my $history;
                    304: 		if ( $key =~ /^(\d+):/ ) {
1.221     raeburn   305:                     $history=$1;
                    306:                     next if ((($questiontype eq 'randomizetry') ||
                    307:                              ($Apache::lonhomework::history{"$history:resource.$partid.type"} eq 'randomizetry')) &&
                    308:                              ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
1.73      albertel  309: 		    $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
                    310: 		    $previous{'last'}='0';
                    311: 		    push(@{ $previous{'version'} },$history);
                    312: 		} else {
1.221     raeburn   313:                     next if ((($questiontype eq 'randomizetry') ||
                    314:                              ($Apache::lonhomework::history{"resource.$partid.type"} eq 'randomizetry')) &&
                    315:                              ($curr_rndseed ne $Apache::lonhomework::history{"resource.$partid.rndseed"}));
1.73      albertel  316: 		    $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
                    317: 		    $previous{'last'}='1';
                    318: 		}
1.221     raeburn   319:                 $previous{'used'} = 1;
1.73      albertel  320: 		if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN';	}
1.209     www       321:                 if ($previous{'award'} eq 'INTERNAL_ERROR') { $previous{'used'}=0; }
1.73      albertel  322: 		&Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
1.219     raeburn   323:             } elsif ($type eq 'ci') {
                    324:                 if (lc($pastresponse) eq lc($curresponse)) {
                    325:                     if ($key =~ /^(\d+):/) {
1.221     raeburn   326:                         my $history = $1;
                    327:                         next if (($questiontype eq 'randomizetry') &&
                    328:                              ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
                    329:                         push (@{$previous{'versionci'}},$history);
1.225     raeburn   330:                         $previous{'awardci'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
1.219     raeburn   331:                         $previous{'usedci'} = 1;
                    332:                     }
                    333:                 }
                    334:             }
1.32      albertel  335: 	}
1.73      albertel  336:     }
                    337:     &Apache::lonhomework::showhash(%previous);
                    338:     return %previous;
1.54      albertel  339: }
                    340: 
                    341: sub handle_previous {
1.73      albertel  342:     my ($previous,$ad)=@_;
                    343:     if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
                    344: 	if ($$previous{'last'}) {
                    345: 	    push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
1.107     albertel  346: 	    push(@Apache::inputtags::previous_version,$$previous{'version'});
1.217     raeburn   347: 	} elsif (($Apache::lonhomework::type ne 'survey') &&
                    348:                  ($Apache::lonhomework::type ne 'surveycred') &&
                    349:                  ($Apache::lonhomework::type ne 'anonsurvey') &&
1.221     raeburn   350:                  ($Apache::lonhomework::type ne 'anonsurveycred')) {
1.73      albertel  351: 	    push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
1.107     albertel  352: 	    push(@Apache::inputtags::previous_version,$$previous{'version'});
1.73      albertel  353: 	}
1.54      albertel  354:     }
1.44      albertel  355: }
                    356: 
1.45      albertel  357: sub view_or_modify {
1.149     albertel  358:     my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.73      albertel  359:     my $myself=0;
1.120     albertel  360:     if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
1.73      albertel  361: 	$myself=1;
                    362:     }
                    363:     my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
                    364:     my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
                    365:     if ($mgr) { return "M"; }
                    366:     if ($vgr) { return "V"; }
                    367:     if ($myself) { return "V"; }
                    368:     return '';
1.45      albertel  369: }
                    370: 
1.44      albertel  371: sub start_dataresponse {
1.73      albertel  372:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    373:     my $id = &Apache::response::start_response($parstack,$safeeval);
                    374:     my $result;
                    375:     if ($target eq 'web') {
                    376: 	$result = $token->[2]->{'display'}.':';
                    377:     } elsif ($target eq 'meta') {
                    378: 	$result = &Apache::response::meta_stores_write($token->[2]->{'name'},
                    379: 						       $token->[2]->{'type'},
                    380: 						       $token->[2]->{'display'});
                    381: 	$result .= &Apache::response::meta_package_write('dataresponse');
                    382:     }
                    383:     return $result;
1.44      albertel  384: }
                    385: 
                    386: sub end_dataresponse {
1.73      albertel  387:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    388:     my $result;
                    389:     if ( $target eq 'web' ) {
                    390:     } elsif ($target eq 'grade' ) {
1.120     albertel  391: 	if ( defined $env{'form.submitted'}) {
1.149     albertel  392: 	    my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
1.73      albertel  393: 	    my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
                    394: 	    if ($allowed) {
1.94      albertel  395: 		&Apache::response::setup_params('dataresponse',$safeeval);
1.73      albertel  396: 		my $partid = $Apache::inputtags::part;
                    397: 		my $id = $Apache::inputtags::response['-1'];
1.120     albertel  398: 		my $response = $env{'form.HWVAL_'.$id};
1.73      albertel  399: 		my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    400: 		if ( $response =~ /[^\s]/) {
                    401: 		    $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
                    402: 		    $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
                    403: 		    $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
                    404: 		}
                    405: 	    } else {
1.235     bisitz    406:                 $result=&mt('Not Permitted to change values');
1.73      albertel  407: 	    }
1.45      albertel  408: 	}
1.73      albertel  409:     }
                    410:     &Apache::response::end_response;
                    411:     return $result;
1.3       albertel  412: }
                    413: 
1.129     albertel  414: sub start_customresponse {
1.128     albertel  415:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    416:     my $id = &Apache::response::start_response($parstack,$safeeval);
1.129     albertel  417:     push(@Apache::lonxml::namespace,'customresponse');
1.128     albertel  418:     my $result;
1.157     www       419:     @Apache::response::custom_answer=();
                    420:     @Apache::response::custom_answer_type=();
1.128     albertel  421:     &Apache::lonxml::register('Apache::response',('answer'));
                    422:     if ($target eq 'web') {
                    423:   	if (  &Apache::response::show_answer() ) {
                    424: 	    my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
                    425: 						   $safeeval);
1.152     albertel  426: 	    $Apache::inputtags::answertxt{$id}=[$answer];
1.128     albertel  427: 	}
                    428:     } elsif ($target eq 'edit') {
                    429: 	$result.=&Apache::edit::tag_start($target,$token);
                    430: 	$result.=&Apache::edit::text_arg('String to display for answer:',
1.220     www       431: 					 'answerdisplay',$token,'50');
1.128     albertel  432: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    433:     } elsif ($target eq 'modified') {
                    434: 	my $constructtag;
                    435: 	$constructtag=&Apache::edit::get_new_args($token,$parstack,
                    436: 						  $safeeval,'answerdisplay');
                    437: 	if ($constructtag) {
                    438: 	    $result = &Apache::edit::rebuild_tag($token);
                    439: 	}
                    440:     } elsif ($target eq 'answer' || $target eq 'grade') {
                    441: 	&Apache::response::reset_params();
                    442:     } elsif ($target eq 'meta') {
1.129     albertel  443: 	$result .= &Apache::response::meta_package_write('customresponse');
1.128     albertel  444:     }
                    445:     return $result;
                    446: }
                    447: 
1.129     albertel  448: sub end_customresponse {
1.128     albertel  449:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    450:     my $result;
                    451:     my $part=$Apache::inputtags::part;
                    452:     my $id=$Apache::inputtags::response[-1];
                    453:     if ( $target eq 'grade' && &Apache::response::submitted() ) {
                    454: 	my $response = &Apache::response::getresponse();
1.146     albertel  455: 	if ($Apache::lonhomework::type eq 'exam' ||
                    456: 	    &Apache::response::submitted('scantron')) {
                    457: 	    &Apache::response::scored_response($part,$id);
                    458: 	} elsif ( $response =~ /[^\s]/ && 
1.158     www       459: 		  $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
1.128     albertel  460: 	    if (!$Apache::lonxml::default_homework_loaded) {
                    461: 		&Apache::lonxml::default_homework_load($safeeval);
                    462: 	    }
                    463: 	    my %previous = &Apache::response::check_for_previous($response,
                    464: 								 $part,$id);
                    465: 	    $Apache::lonhomework::results{"resource.$part.$id.submission"}=
                    466: 		$response;
                    467: 	    my $error;
1.129     albertel  468: 	    ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
1.128     albertel  469: 		$response;
                    470: 	    
1.216     www       471: 	    my ($award,$score) = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
1.128     albertel  472: 	    if (!&Apache::inputtags::valid_award($award)) {
                    473: 		$error = $award;
                    474: 		$award = 'ERROR';
                    475: 	    }
1.233     raeburn   476:             if (($award eq 'INCORRECT' || $award eq 'APPROX_ANS' ||
                    477:                  $award eq 'EXACT_ANS')) {
                    478:                 if ($Apache::lonhomework::type eq 'survey') {
                    479:                     $award='SUBMITTED';
                    480:                 } elsif ($Apache::lonhomework::type eq 'surveycred') {
                    481:                     $award='SUBMITTED_CREDIT';
                    482:                 } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
                    483:                     $award='ANONYMOUS';
                    484:                 } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
                    485:                     $award='ANONYMOUS_CREDIT';
                    486:                 }
                    487:             }
1.128     albertel  488: 	    &Apache::response::handle_previous(\%previous,$award);
                    489: 	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
                    490: 		$award;
1.216     www       491:             if ($award eq 'ASSIGNED_SCORE') {
                    492:                 $Apache::lonhomework::results{"resource.$part.$id.awarded"}=1.0*$score;
                    493:             }
1.128     albertel  494: 	    if ($error) {
                    495: 		$Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
                    496: 		    $error;
                    497: 	    }
                    498: 	}
1.146     albertel  499:     } elsif ( $target eq 'answer') {
                    500: 	$result  = &Apache::response::answer_header('customresponse');
                    501: 	my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
                    502: 						$safeeval);
                    503: 	if ($env{'form.answer_output_mode'} ne 'tex') {
                    504: 	    $answer = '<b>'.$answer.'</b>';
                    505: 	}
                    506: 	$result .= &Apache::response::answer_part('customresponse',$answer);
                    507: 	$result .= &Apache::response::answer_footer('customresponse');
                    508:     }
1.163     albertel  509:     if ($target eq 'web') {
1.229     raeburn   510: 	&setup_prior_tries_hash(\&format_prior_response_custom);
1.163     albertel  511:     }
1.146     albertel  512:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || 
                    513: 	$target eq 'tex' || $target eq 'analyze') {
1.227     raeburn   514:         my $repetition = &repetition();
                    515: 	&Apache::lonxml::increment_counter($repetition,"$part.$id");
1.179     foxr      516: 	if ($target eq 'analyze') {
1.187     raeburn   517:             $Apache::lonhomework::analyze{"$part.$id.type"} = 'customresponse';
1.179     foxr      518: 	    &Apache::lonhomework::set_bubble_lines();
                    519: 	}
1.128     albertel  520:     }
1.244     raeburn   521:     if ($target eq 'web') {
                    522:         &setup_prior_tries_hash(\&format_prior_response_math);
                    523:     }
1.128     albertel  524:     pop(@Apache::lonxml::namespace);
1.157     www       525:     pop(@Apache::response::custom_answer);
                    526:     pop(@Apache::response::custom_answer_type);
1.128     albertel  527:     &Apache::lonxml::deregister('Apache::response',('answer'));
                    528:     &Apache::response::end_response();
                    529:     return $result;
                    530: }
                    531: 
1.163     albertel  532: sub format_prior_response_custom {
                    533:     my ($mode,$answer) =@_;
1.229     raeburn   534:     if (ref($answer) eq 'ARRAY') {
                    535:         $answer = '('.join(', ', @{ $answer }).')';
                    536:     }
1.163     albertel  537:     return '<span class="LC_prior_custom">'.
                    538: 	    &HTML::Entities::encode($answer,'"<>&').'</span>';
                    539: }
1.140     www       540: 
1.139     www       541: sub start_mathresponse {
1.140     www       542:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    543:     my $id = &Apache::response::start_response($parstack,$safeeval);
                    544:     push(@Apache::lonxml::namespace,'mathresponse');
1.139     www       545:     my $result;
1.157     www       546:     @Apache::response::custom_answer=();
                    547:     @Apache::response::custom_answer_type=();
1.140     www       548:     &Apache::lonxml::register('Apache::response',('answer'));
                    549:     if ($target eq 'web') {
                    550:   	if (  &Apache::response::show_answer() ) {
                    551: 	    my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
                    552: 						   $safeeval);
1.152     albertel  553: 	    $Apache::inputtags::answertxt{$id}=[$answer];
1.140     www       554: 	}
1.191     www       555: 
1.140     www       556:     } elsif ($target eq 'edit') {
                    557: 	$result.=&Apache::edit::tag_start($target,$token);
                    558: 	$result.=&Apache::edit::text_arg('String to display for answer:',
1.220     www       559: 					 'answerdisplay',$token,'50');
1.150     www       560: 	$result.=&Apache::edit::select_arg('Algebra System:',
                    561: 					   'cas',
1.214     www       562: 					   ['maxima','R'],
1.150     www       563: 					   $token);
                    564: 	$result.=&Apache::edit::text_arg('Argument Array:',
1.193     www       565: 					 'args',$token).
                    566:                  &Apache::loncommon::help_open_topic('Maxima_Argument_Array');
1.192     www       567:         $result.=&Apache::edit::text_arg('Libraries:',
1.193     www       568:                                          'libraries',$token).
                    569:                  &Apache::loncommon::help_open_topic('Maxima_Libraries');
1.140     www       570: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    571:     } elsif ($target eq 'modified') {
                    572: 	my $constructtag;
                    573: 	$constructtag=&Apache::edit::get_new_args($token,$parstack,
1.192     www       574: 						  $safeeval,'answerdisplay','cas','args','libraries');
1.140     www       575: 	if ($constructtag) {
                    576: 	    $result = &Apache::edit::rebuild_tag($token);
                    577: 	}
                    578:     } elsif ($target eq 'answer' || $target eq 'grade') {
                    579: 	&Apache::response::reset_params();
                    580:     } elsif ($target eq 'meta') {
                    581: 	$result .= &Apache::response::meta_package_write('mathresponse');
1.139     www       582:     }
                    583:     return $result;
                    584: }
                    585: 
                    586: sub end_mathresponse {
1.140     www       587:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    588:     my $result;
                    589:     my $part=$Apache::inputtags::part;
                    590:     my $id=$Apache::inputtags::response[-1];
                    591:     if ( $target eq 'grade' && &Apache::response::submitted() ) {
                    592: 	my $response = &Apache::response::getresponse();
1.150     www       593: 	if ( $response =~ /[^\s]/ ) {
1.140     www       594: 	    if (!$Apache::lonxml::default_homework_loaded) {
                    595: 		&Apache::lonxml::default_homework_load($safeeval);
                    596: 	    }
                    597: 	    my %previous = &Apache::response::check_for_previous($response,
                    598: 								 $part,$id);
                    599: 	    $Apache::lonhomework::results{"resource.$part.$id.submission"}=
                    600: 		$response;
                    601: 	    my $error;
1.155     www       602: 	    my $award;
                    603: 	    my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
                    604:             if ($cas eq 'maxima') {
                    605:                 my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
1.192     www       606:                 $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args,
                    607:                                                       &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
1.155     www       608:             }
1.214     www       609:             if ($cas eq 'R') {
                    610:                 my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
                    611:                 $award=&Apache::lonr::r_run($Apache::response::custom_answer[-1],$response,$args,
                    612:                                             &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
                    613:             }
                    614: 
1.140     www       615: 	    if (!&Apache::inputtags::valid_award($award)) {
1.151     albertel  616: 		$error = $award;
                    617: 		$award = 'ERROR';
1.140     www       618: 	    }
1.233     raeburn   619:             if (($award eq 'INCORRECT' || $award eq 'APPROX_ANS' ||
                    620:                  $award eq 'EXACT_ANS')) {
                    621:                 if ($Apache::lonhomework::type eq 'survey') {
                    622:                     $award='SUBMITTED';
                    623:                 } elsif ($Apache::lonhomework::type eq 'surveycred') {
                    624:                     $award='SUBMITTED_CREDIT';
                    625:                 } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
                    626:                     $award='ANONYMOUS';
                    627:                 } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
                    628:                     $award='ANONYMOUS_CREDIT';
                    629:                 }
                    630:             }
1.140     www       631: 	    &Apache::response::handle_previous(\%previous,$award);
                    632: 	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
                    633: 		$award;
                    634: 	    if ($error) {
                    635: 		$Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
                    636: 		    $error;
                    637: 	    }
                    638: 	}
                    639:     }
1.163     albertel  640: 
1.140     www       641:     pop(@Apache::lonxml::namespace);
1.157     www       642:     pop(@Apache::response::custom_answer);
                    643:     pop(@Apache::response::custom_answer_type);
1.140     www       644:     &Apache::lonxml::deregister('Apache::response',('answer'));
                    645:     &Apache::response::end_response();
                    646:     return $result;
1.139     www       647: }
                    648: 
1.163     albertel  649: sub format_prior_response_math {
                    650:     my ($mode,$answer) =@_;
                    651:     return '<span class="LC_prior_math">'.
                    652: 	    &HTML::Entities::encode($answer,'"<>&').'</span>';
                    653: }
                    654: 
1.156     www       655: sub implicit_multiplication {
                    656:     my ($expression)=@_;
                    657: # Escape scientific notation, so 3e8 does not become 3*e*8
                    658: # 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8
                    659:     $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;
                    660: # 3x10^8 -> 3&8; 3*10^-8 -> 3&-8
                    661:     $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;
                    662: # Fill in multiplication signs
                    663: # a b -> a*b;3 b -> 3*b;3 4 -> 3*4
1.176     albertel  664:     $expression=~s/([A-Za-z0-9])\s+(?=[A-Za-z0-9])/$1\*/gs;
1.156     www       665: # )( -> )*(; ) ( -> )*(
                    666:     $expression=~s/\)\s*\(/\)\*\(/gs;
                    667: # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A
                    668:     $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;
                    669: # a ( -> a*(
1.174     riegler   670:     $expression=~s/([A-Za-z0-9])\s+\(/$1\*\(/gs;
1.156     www       671: # )a -> )*a; )3 -> )*3; ) 3 -> )*3
1.174     riegler   672:     $expression=~s/\)\s*([A-Za-z0-9])/\)\*$1/gs;
1.156     www       673: # 3&8 -> 3e8; 3&-4 -> 3e-4
                    674:     $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;
                    675:     return $expression;
                    676: }
1.140     www       677: 
1.128     albertel  678: sub start_answer {
                    679:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    680:     my $result;
1.157     www       681:     push(@Apache::response::custom_answer,
                    682: 	&Apache::lonxml::get_all_text_unbalanced("/answer",$parser));
                    683:     push(@Apache::response::custom_answer_type,
                    684: 	lc(&Apache::lonxml::get_param('type',$parstack,$safeeval)));
                    685:     $Apache::response::custom_answer_type[-1] =~ s/\s+//g;
1.128     albertel  686:     if ($target eq "edit" ) {
                    687: 	$result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
                    688: 	$result.=&Apache::edit::editfield($token->[1],
1.158     www       689: 					  $Apache::response::custom_answer[-1],
1.128     albertel  690: 					  '',80,4);
                    691:     } elsif ( $target eq "modified" ) {
                    692: 	$result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
                    693:     }
                    694:     return $result;
                    695: }
                    696: 
                    697: sub end_answer {
                    698:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    699:     if ($target eq 'edit' ) {
                    700: 	return &Apache::edit::end_table();
                    701:     }
                    702: }
                    703: 
1.83      albertel  704: sub decide_package {
                    705:     my ($tagstack)=@_;
                    706:     my $package;
                    707:     if ($$tagstack[-1] eq 'parameter') {
                    708: 	$package='part';
                    709:     } else {
                    710: 	my $i=-1;
                    711: 	while (defined($$tagstack[$i])) {
                    712: 	    if ($$tagstack[$i] =~ /(response|hint)$/) {
                    713: 		$package=$$tagstack[$i];
                    714: 		last;
                    715: 	    }
                    716: 	    $i--;
                    717: 	}
                    718:     }
                    719:     return $package;
                    720: }
                    721: 
1.3       albertel  722: sub start_responseparam {
1.73      albertel  723:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    724:     my $result='';
                    725:     if ($target eq 'meta') {
                    726: 	$result = &meta_parameter_write($token->[2]->{'name'},
                    727: 					$token->[2]->{'type'},
                    728: 					$token->[2]->{'default'},
                    729: 					$token->[2]->{'description'});
                    730:     } elsif ($target eq 'edit') {
                    731: 	$result.=&Apache::edit::tag_start($target,$token);
1.83      albertel  732: 	my $optionlist;
                    733: 	my $package=&decide_package($tagstack);
                    734: 	foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
                    735: 	    if ($key =~ /^\Q$package\E&(.*)&display$/) {
                    736: 		$optionlist.='<option value="'.$1.'">'.
                    737: 		    $Apache::lonnet::packagetab{$key}.'</option>';
                    738: 	    }
                    739: 	}
                    740: 	if (defined($optionlist)) {
1.206     bisitz    741: 	    $result.=&mt('Use template:').' <select name="'.
1.83      albertel  742: 		&Apache::edit::html_element_name('parameter_package').'">'.
                    743: 		    '<option value=""></option>'.$optionlist.'</select><br />';
                    744: 	}
1.73      albertel  745: 	$result.=&Apache::edit::text_arg('Name:','name',$token).
                    746: 	    &Apache::edit::text_arg('Type:','type',$token).
                    747: 		&Apache::edit::text_arg('Description:','description',$token).
                    748: 		    &Apache::edit::text_arg('Default:','default',$token).
                    749: 			"</td></tr>";
                    750: 	$result.=&Apache::edit::end_table;
                    751:     } elsif ($target eq 'modified') {
1.83      albertel  752: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    753: 						     $safeeval,'name','type',
                    754: 						     'description','default');
                    755: 	my $element=&Apache::edit::html_element_name('parameter_package');
1.120     albertel  756: 	if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
                    757: 	    my $name=$env{"form.$element"};
1.83      albertel  758: 	    my $tag=&decide_package($tagstack);
                    759: 	    $token->[2]->{'name'}=$name;
                    760: 	    $token->[2]->{'type'}=
                    761: 		$Apache::lonnet::packagetab{"$tag&$name&type"};
                    762: 	    $token->[2]->{'description'}=
                    763: 		$Apache::lonnet::packagetab{"$tag&$name&display"};
                    764: 	    $token->[2]->{'default'}=
                    765: 		$Apache::lonnet::packagetab{"$tag&$name&default"};
1.186     raeburn   766:             $token->[3] = ['name','type','description','default'];
1.83      albertel  767: 	    $constructtag=1;
                    768: 	}
1.73      albertel  769: 	if ($constructtag) {
                    770: 	    $result = &Apache::edit::rebuild_tag($token);
                    771: 	}
                    772:     } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
                    773: 	     $target eq 'tex' || $target eq 'analyze' ) {
1.120     albertel  774: 	if ($env{'request.state'} eq 'construct') {
1.73      albertel  775: 	    my $name   =&Apache::lonxml::get_param('name',$parstack,$safeeval);
                    776: 	    my $default=&Apache::lonxml::get_param('default',$parstack,
                    777: 						     $safeeval);
                    778: 	    if ($name) {$Apache::inputtags::params{$name}=$default;}
                    779: 	}
1.52      albertel  780:     }
1.73      albertel  781:     return $result;
1.3       albertel  782: }
                    783: 
                    784: sub end_responseparam {
1.73      albertel  785:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
                    786:     if ($target eq 'edit') { return ('','no'); }
                    787:     return '';
1.55      albertel  788: }
                    789: 
                    790: sub start_parameter {
1.114     albertel  791:     return &start_responseparam(@_);
1.55      albertel  792: }
                    793: 
                    794: sub end_parameter {
1.114     albertel  795:     return &end_responseparam(@_);
1.42      albertel  796: }
                    797: 
1.67      albertel  798: sub reset_params {
                    799:     %Apache::inputtags::params=();
                    800: }
                    801: 
1.42      albertel  802: sub setup_params {
1.94      albertel  803:     my ($tag,$safeeval) = @_;
1.42      albertel  804: 
1.120     albertel  805:     if ($env{'request.state'} eq 'construct') { return; }
1.73      albertel  806:     my %paramlist=();
                    807:     foreach my $key (keys(%Apache::lonnet::packagetab)) {
1.161     albertel  808: 	if ($key =~ /^\Q$tag\E/) {
1.73      albertel  809: 	    my ($package,$name) = split(/&/,$key);
                    810: 	    $paramlist{$name}=1;
                    811: 	}
1.42      albertel  812:     }
1.73      albertel  813:     foreach my $key (keys(%paramlist)) {
                    814: 	my $entry= 'resource.'.$Apache::inputtags::part;
                    815: 	if (defined($Apache::inputtags::response[-1])) {
                    816: 	    $entry.='_'.$Apache::inputtags::response[-1];
                    817: 	}
                    818: 	$entry.='.'.$key;
                    819: 	&Apache::lonxml::debug("looking for $entry");
                    820: 	my $value = &Apache::lonnet::EXT("$entry");
                    821: 	&Apache::lonxml::debug("$key has value :$value:");
                    822: 	if ($value eq 'con_lost' || $value =~ /^error:/) {
                    823: 	    &Apache::lonxml::debug("using nothing");
                    824: 	    $Apache::inputtags::params{$key}='';
                    825: 	} else {
1.94      albertel  826: 	    my $string="{return qq\0".$value."\0}";
                    827: 	    my $newvalue=&Apache::run::run($string,$safeeval,1);
                    828: 	    if (defined($newvalue)) { $value=$newvalue; }
1.73      albertel  829: 	    $Apache::inputtags::params{$key}=$value;
                    830: 	}
1.42      albertel  831:     }
1.48      albertel  832: }
                    833: 
1.132     albertel  834: {
                    835:     my @answer_bits;
1.147     albertel  836:     my $need_row_start;
1.132     albertel  837: 
1.48      albertel  838: sub answer_header {
1.147     albertel  839:     my ($type,$increment,$rows) = @_;
1.73      albertel  840:     my $result;
1.120     albertel  841:     if ($env{'form.answer_output_mode'} eq 'tex') {
1.132     albertel  842: 	undef(@answer_bits);
1.133     albertel  843: 	my $bit;
                    844: 	if ($Apache::lonhomework::type eq 'exam') {
                    845: 	    $bit = ($Apache::lonxml::counter+$increment).') ';
                    846: 	} else {
1.235     bisitz    847:             $bit .= ' '.&mt('Answer for Part: [_1]',
                    848:                                 '\verb|'.$Apache::inputtags::part.'|').' ';
1.133     albertel  849: 	}
                    850: 	push(@answer_bits,$bit);
1.73      albertel  851:     } else {
1.147     albertel  852: 	my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
1.132     albertel  853: 	$result  = '<table border="1"><tr>';
                    854: 	if ($Apache::lonhomework::type eq 'exam') {
1.147     albertel  855: 	    $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
1.132     albertel  856: 	} else {
1.147     albertel  857: 	    $result .= $td.&mt('Answer for Part: [_1]',
                    858: 			       $Apache::inputtags::part).'</td>';
1.132     albertel  859: 	}
                    860: 	$result .= "\n";
1.147     albertel  861: 	$need_row_start = 0;
                    862:     }
                    863:     return $result;
                    864: }
                    865: 
                    866: sub next_answer {
                    867:     my ($type) = @_;
                    868:     my $result;
                    869:     if ($env{'form.answer_output_mode'} eq 'tex') {
                    870: 	# FIXME ... need to do something with tex mode
                    871:     } else {
                    872: 	$result .= "</tr>";
                    873: 	$need_row_start = 1;
1.73      albertel  874:     }
                    875:     return $result;
1.48      albertel  876: }
                    877: 
                    878: sub answer_part {
1.148     albertel  879:     my ($type,$answer,$args) = @_;
1.73      albertel  880:     my $result;
1.120     albertel  881:     if ($env{'form.answer_output_mode'} eq 'tex') {
1.148     albertel  882: 	if (!$args->{'no_verbatim'}) {
                    883: 	    my $to_use='|';
                    884: 	    foreach my $value (32..126) {
                    885: 		my $char=pack('c',$value);
                    886: 		if ($answer !~ /\Q$char\E/) {
                    887: 		    $to_use=$char;
                    888: 		    last;
                    889: 		}
                    890: 	    }
1.189     www       891:             my $fullanswer=$answer;
1.188     www       892:             $answer='';
1.189     www       893:             foreach my $element (split(/[\;]/,$fullanswer)) {
                    894: 	       if ($element ne '') {
                    895: 	 	  $answer.= '\verb'.$to_use.$element.$to_use.' \newline';
                    896: 	       }
1.188     www       897:             }
1.124     albertel  898: 	}
1.132     albertel  899: 	if ($answer ne '') {
1.148     albertel  900: 	    push(@answer_bits,$answer);
1.132     albertel  901: 	}
1.73      albertel  902:     } else {
1.147     albertel  903: 	if ($need_row_start) {
                    904: 	    $result .= '<tr>';
                    905: 	    $need_row_start = 0;
                    906: 	}
1.189     www       907: 	$result .= '<td>'.$answer.'</td>';
1.73      albertel  908:     }
                    909:     return $result;
1.48      albertel  910: }
                    911: 
                    912: sub answer_footer {
1.73      albertel  913:     my ($type) = @_;
                    914:     my $result;
1.120     albertel  915:     if ($env{'form.answer_output_mode'} eq 'tex') {
1.189     www       916: 	$result  = ' \vskip 0 mm \noindent \begin{tabular}{|p{1.5cm}|p{6.8cm}|}\hline ';
                    917: 	$result .= $answer_bits[0].'&\vspace*{-4mm}\begin{itemize}';
                    918:         for (my $i=1;$i<=$#answer_bits;$i++) {
                    919:             $result.='\item '.$answer_bits[$i].'\vspace*{-7mm}';
                    920:         }
                    921: 	$result .= ' \end{itemize} \\\\ \hline \end{tabular} \vskip 0 mm ';
1.73      albertel  922:     } else {
1.185     albertel  923: 	if (!$need_row_start) {
                    924: 	    $result .= '</tr>';
                    925: 	}
                    926: 	$result .= '</table>';
1.73      albertel  927:     }
                    928:     return $result;
1.1       albertel  929: }
1.2       albertel  930: 
1.132     albertel  931: }
                    932: 
1.62      albertel  933: sub showallfoils {
1.120     albertel  934:     if (defined($env{'form.showallfoils'})) {
1.149     albertel  935: 	my ($symb)=&Apache::lonnet::whichuser();
1.120     albertel  936: 	if (($env{'request.state'} eq 'construct') || 
                    937: 	    ($env{'user.adv'} && $symb eq '')      ||
1.118     foxr      938:             ($Apache::lonhomework::viewgrades) ) {
1.102     albertel  939: 	    return 1;
                    940: 	}
1.73      albertel  941:     }
1.108     albertel  942:     if ($Apache::lonhomework::type eq 'survey') { return 1; }
1.217     raeburn   943:     if ($Apache::lonhomework::type eq 'surveycred') { return 1; }
                    944:     if ($Apache::lonhomework::type eq 'anonsurvey') { return 1; }
                    945:     if ($Apache::lonhomework::type eq 'anonsurveycred') { return 1; }
                    946: 
1.102     albertel  947:     return 0;
1.70      albertel  948: }
                    949: 
1.168     albertel  950: =pod
                    951: 
1.210     raeburn   952: =item &getresponse();
1.168     albertel  953: 
                    954: Retreives the current submitted response, helps out in the case of
                    955: scantron mode.
                    956: 
                    957: Returns either the exact text of the submission, or a bubbled response
                    958: converted to something usable.
                    959: 
                    960: Optional Arguments:
1.171     albertel  961:   $offset - (defaults to 1) if a problem has more than one bubble
                    962:             response, pass in the number of the bubble wanted, (the
                    963:             first bubble associated with a problem has an offset of 1,
                    964:             the second bubble is 2
                    965: 
1.168     albertel  966:   $resulttype - undef    -> a number between 0 and 25
                    967:                 'A is 1' -> a number between 1 and 26
                    968:                 'letter' -> a letter between 'A' and 'Z'
1.172     foxr      969:   $lines  - undef problem only needs a single line of bubbles.
                    970:             nonzero  Problem wants the first nonempty response in 
                    971:                       $lines lines of bubbles.
                    972:   $bubbles_per_line - Must be provided if lines is defined.. number of
                    973:                       bubbles on a line.
1.173     albertel  974: 
1.168     albertel  975: =cut
                    976: 
1.70      albertel  977: sub getresponse {
1.172     foxr      978:     my ($offset,$resulttype, $lines, $bubbles_per_line)=@_;
1.70      albertel  979:     my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
                    980:     my $response;
1.168     albertel  981:     if (!defined($offset)) {
1.170     albertel  982: 	$offset=1;
1.70      albertel  983:     } else {
1.168     albertel  984: 	$formparm.=":$offset";
1.70      albertel  985:     }
1.172     foxr      986:     if (!defined($lines)) {
                    987: 	$lines = 1;
                    988:     }
1.70      albertel  989:     my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
                    990: 		    'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
                    991: 		    'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
                    992: 		    'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
1.120     albertel  993:     if ($env{'form.submitted'} eq 'scantron') {
1.71      albertel  994: 	my $part  = $Apache::inputtags::part;
                    995: 	my $id    = $Apache::inputtags::response[-1];
1.172     foxr      996: 	
                    997: 	my $line;
1.211     raeburn   998: 	my $startline = $env{'form.scantron_questnum_start.'.$part.'.'.$id};
                    999:         if (!$startline) {
                   1000:             $startline = $Apache::lonxml::counter;
                   1001:         }
1.172     foxr     1002: 	for ($line = 0; $line < $lines; $line++) {
1.211     raeburn  1003:             my $theline = $startline+$offset-1+$line;
1.184     foxr     1004: 	    $response = $env{"scantron.$theline.answer"};
                   1005: 	    if ((defined($response)) && ($response ne "") && ($response ne " ")) {
1.172     foxr     1006: 		last;
                   1007: 	    }
1.211     raeburn  1008:  
1.172     foxr     1009: 	}
1.178     albertel 1010: 
                   1011: 	# save bubbled letter for later
                   1012: 	$Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
                   1013: 	    $response;
1.90      albertel 1014: 	if ($resulttype ne 'letter') {
1.226     raeburn  1015:             $response = $let_to_num{$response};
                   1016:             if ($resulttype eq 'A is 1') {
                   1017:                 if ($response ne "") {
                   1018:                     $response = $response+1;
                   1019:                 }
1.104     albertel 1020: 	    }
1.172     foxr     1021: 	    if ($response ne "") {
                   1022: 		$response += $line * $bubbles_per_line;
                   1023: 	    }
                   1024: 	} else {
                   1025: 	    if ($response ne "") {
1.226     raeburn  1026:                 my $raw = $response;
1.172     foxr     1027: 		$response = chr(ord($response) + $line * $bubbles_per_line);
                   1028: 	    }
1.90      albertel 1029: 	}
1.172     foxr     1030: 
1.70      albertel 1031:     } else {
1.120     albertel 1032: 	$response = $env{$formparm};
1.70      albertel 1033:     }
1.172     foxr     1034:     # 
                   1035:     #  If we have a nonempty answer, correct the numeric value
                   1036:     #  of the answer for the line on which it was found.
                   1037:     #
                   1038: 
1.70      albertel 1039:     return $response;
1.62      albertel 1040: }
1.71      albertel 1041: 
1.168     albertel 1042: =pod
                   1043: 
                   1044: =item &repetition();
                   1045: 
1.227     raeburn  1046: In scalar context:
                   1047: 
                   1048: returns: the number of lines that are required to encode the weight.
1.226     raeburn  1049: (Default is for 10 bubbles per bubblesheet item; other (integer) 
                   1050: values can be specified by using a custom Bubblesheet format file 
                   1051: with an eighteenth entry (BubblesPerRow) set to the integer 
                   1052: appropriate for the bubblesheets which will be used to assign weights.
1.168     albertel 1053: 
1.227     raeburn  1054: In array context:
                   1055:  
                   1056: returns: number of lines required to encode weight, and bubbles/line.
                   1057: 
1.168     albertel 1058: =cut
                   1059: 
1.71      albertel 1060: sub repetition {
                   1061:     my $id = $Apache::inputtags::part;
                   1062:     my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.121     albertel 1063:     if (!defined($weight) || ($weight eq '')) { $weight=1; }
1.226     raeburn  1064:     my $bubbles_per_row;
                   1065:     if (($env{'form.bubbles_per_row'} =~ /^\d+$/) && 
                   1066:         ($env{'form.bubbles_per_row'} > 0)) {
                   1067:         $bubbles_per_row = $env{'form.bubbles_per_row'};
                   1068:     } else {
                   1069:         $bubbles_per_row = 10;
                   1070:     }
1.227     raeburn  1071:     my $denominator = $bubbles_per_row;
                   1072:     if (($env{'form.scantron_lastbubblepoints'} == 0) && 
                   1073:         ($bubbles_per_row > 1)) {
                   1074:         $denominator = $bubbles_per_row - 1;
                   1075:     } 
                   1076:     my $repetition = int($weight/$denominator);
                   1077:     if ($weight % $denominator != 0) { $repetition++; } 
                   1078:     if (wantarray) {
                   1079:         return ($repetition,$bubbles_per_row);
                   1080:     }
1.72      albertel 1081:     return $repetition;
1.227     raeburn  1082: 
1.72      albertel 1083: }
                   1084: 
1.168     albertel 1085: =pod
                   1086: 
1.210     raeburn  1087: =item &scored_response();
1.168     albertel 1088: 
                   1089: Sets the results hash elements
                   1090: 
                   1091:    resource.$part_id.$response_id.awarded - to the floating point
                   1092:      number between 0 and 1 that was awarded on the bubbled input
                   1093: 
                   1094:    resource.$part_id.$response_id.awarddetail - to 'ASSIGNED_SCORE'
                   1095: 
                   1096: Returns
                   1097: 
                   1098:    the number of bubble sheet lines that were used (and likely need to
                   1099:      be passed to &Apache::lonxml::increment_counter()
                   1100: 
                   1101: Arguments
                   1102: 
                   1103:    $part_id - id of the part to grade
                   1104:    $response_id - id of the response to grade
                   1105:   
                   1106: 
                   1107: =cut
                   1108: 
1.72      albertel 1109: sub scored_response {
                   1110:     my ($part,$id)=@_;
                   1111:     my $repetition=&repetition();
1.227     raeburn  1112:     my $bubbles_per_row;
                   1113:     if (($env{'form.bubbles_per_row'} =~ /^\d+$/) &&
                   1114:         ($env{'form.bubbles_per_row'} > 0)) {
                   1115:         $bubbles_per_row = $env{'form.bubbles_per_row'};
                   1116:     } else {
                   1117:         $bubbles_per_row = 10;
                   1118:     }
1.72      albertel 1119:     my $score=0;
                   1120:     for (my $i=0;$i<$repetition;$i++) {
1.227     raeburn  1121: 	# A is 1, B is 2, etc.
1.72      albertel 1122: 	my $increase=&Apache::response::getresponse($i+1);
1.227     raeburn  1123:         unless (($increase == $bubbles_per_row-1) &&
                   1124:                 ($env{'form.scantron_lastbubblepoints'} == 0)) {
                   1125:             # (get response return 0-9 and then we add 1)
                   1126:             if ($increase ne '') {
                   1127:                 $score+=$increase+1;
                   1128:             }
                   1129:         }
1.72      albertel 1130:     }
                   1131:     my $weight = &Apache::lonnet::EXT("resource.$part.weight");
1.91      albertel 1132:     if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
1.72      albertel 1133:     my $pcr=$score/$weight;
                   1134:     $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
                   1135:     $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
                   1136: 	'ASSIGNED_SCORE';
1.71      albertel 1137:     return $repetition;
1.78      albertel 1138: }
                   1139: 
                   1140: sub whichorder {
1.221     raeburn  1141:     my ($max,$randomize,$showall,$hash,$rndseed)=@_;
1.78      albertel 1142:     #&Apache::lonxml::debug("man $max randomize $randomize");
1.231     raeburn  1143:     my @names;
                   1144:     if (ref($hash->{'names'}) eq 'ARRAY') {
                   1145:         @names = @{$hash->{'names'}};
                   1146:     }
                   1147:     return if (!@names);
1.78      albertel 1148:     my @whichopt =();
                   1149:     my (%top,@toplist,%bottom,@bottomlist);
                   1150:     if (!($showall || ($randomize eq 'no'))) {
                   1151: 	my $current=0;
                   1152: 	foreach my $name (@names) {
                   1153: 	    $current++;
                   1154: 	    if ($$hash{"$name.location"} eq 'top') {
                   1155: 		$top{$name}=$current;
                   1156: 	    } elsif ($$hash{"$name.location"} eq 'bottom') {
                   1157: 		$bottom{$name}=$current;
                   1158: 	    }
                   1159: 	}
                   1160:     }
                   1161:     my $topcount=0;
                   1162:     my $bottomcount=0;
                   1163:     while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
                   1164: 	   && ($#names > -1)) {
                   1165: 	#&Apache::lonxml::debug("Have $#whichopt max is $max");
                   1166: 	my $aopt;
                   1167: 	if ($showall || ($randomize eq 'no')) {
                   1168: 	    $aopt=0;
                   1169: 	} else {
                   1170: 	    $aopt=int(&Math::Random::random_uniform() * ($#names+1));
                   1171: 	}
                   1172: 	#&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
                   1173: 	$aopt=splice(@names,$aopt,1);
                   1174: 	#&Apache::lonxml::debug("Picked $aopt");
                   1175: 	if ($top{$aopt}) {
                   1176: 	    $toplist[$top{$aopt}]=$aopt;
                   1177: 	    $topcount++;
                   1178: 	} elsif ($bottom{$aopt}) {
                   1179: 	    $bottomlist[$bottom{$aopt}]=$aopt;
                   1180: 	    $bottomcount++;
                   1181: 	} else {
                   1182: 	    push (@whichopt,$aopt);
                   1183: 	}
                   1184:     }
                   1185:     for (my $i=0;$i<=$#toplist;$i++) {
                   1186: 	if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
                   1187:     }
                   1188:     for (my $i=0;$i<=$#bottomlist;$i++) {
                   1189: 	if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
                   1190:     }
                   1191:     return @whichopt;
1.71      albertel 1192: }
                   1193: 
1.85      albertel 1194: sub show_answer {
                   1195:     my $part   = $Apache::inputtags::part;
1.228     raeburn  1196:     my $award  = $Apache::lonhomework::history{"resource.$part.solved"};
1.85      albertel 1197:     my $status = $Apache::inputtags::status[-1];
1.228     raeburn  1198:     my $canshow = 0;
                   1199:     if ($award =~ /^correct/) {
1.230     raeburn  1200:         if (($Apache::lonhomework::history{"resource.$part.awarded"} >= 1) ||
                   1201:             (&Apache::lonnet::EXT("resource.$part.retrypartial") !~/^1|on|yes$/)) {
1.228     raeburn  1202:             $canshow = 1;
                   1203:         }   
                   1204:     }
                   1205:     return  (($canshow && &Apache::lonhomework::show_problem_status()) 
                   1206: 	     || $status eq "SHOW_ANSWER");
1.85      albertel 1207: }
1.87      albertel 1208: 
                   1209: sub analyze_store_foilgroup {
                   1210:     my ($shown,$attrs)=@_;
                   1211:     my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
                   1212:     foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
                   1213: 	if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
                   1214: 	push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
                   1215: 	foreach my $attr (@$attrs) {
                   1216: 	    $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
                   1217: 		$Apache::response::foilgroup{"$name.".$attr};
                   1218: 	}
                   1219:     }
                   1220:     push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
1.96      albertel 1221: }
                   1222: 
                   1223: sub check_if_computed {
                   1224:     my ($token,$parstack,$safeeval,$name)=@_;
                   1225:     my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
1.106     matthew  1226:     if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
1.96      albertel 1227: 	my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
                   1228: 	$Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
                   1229:     }
1.87      albertel 1230: }
                   1231: 
                   1232: sub pick_foil_for_concept {
                   1233:     my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
1.231     raeburn  1234:     my @names;
                   1235:     if (ref($Apache::response::conceptgroup{'names'}) eq 'ARRAY') {
                   1236:         @names = @{ $Apache::response::conceptgroup{'names'} };
                   1237:     }
                   1238:     return if (!@names);
1.87      albertel 1239:     my $pick=int(&Math::Random::random_uniform() * ($#names+1));
                   1240:     my $name=$names[$pick];
                   1241:     push @{ $Apache::response::foilgroup{'names'} }, $name;
                   1242:     foreach my $attr (@$attrs) {
                   1243: 	$Apache::response::foilgroup{"$name.".$attr} =
                   1244: 	    $Apache::response::conceptgroup{"$name.".$attr};
                   1245:     }
                   1246:     my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
                   1247:     $Apache::response::foilgroup{"$name.concept"} = $concept;
                   1248:     &Apache::lonxml::debug("Selecting $name in $concept");
                   1249:     my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
                   1250:     if ($target eq 'analyze') {
                   1251: 	push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
                   1252: 	      $concept);
                   1253: 	$Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
                   1254: 	    $Apache::response::conceptgroup{'names'};
                   1255: 	foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
                   1256: 	    push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
                   1257: 		  $name);
                   1258: 	    foreach my $attr (@$attrs) {
                   1259: 		$Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
                   1260: 		    $Apache::response::conceptgroup{"$name.$attr"};
                   1261: 	    }
                   1262: 	}
                   1263:     }
                   1264:     push(@{ $hinthash->{"$part_id.concepts"} },$concept);
                   1265:     $hinthash->{"$part_id.concept.$concept"}=
                   1266: 	$Apache::response::conceptgroup{'names'};
                   1267: 
                   1268: }
1.208     jms      1269: 
                   1270: =pod
                   1271: 
                   1272: =item get_response_param()
                   1273: 
                   1274: Get a parameter associated with a problem.
                   1275: Parameters:
                   1276: 	$id        - the id of the paramater, either a part id, 
                   1277:               or a partid and responspe id joined by _
                   1278: 	$name      - Name of the parameter to fetch
                   1279: 	$default   - Default value for the paramter.
                   1280: 
                   1281: =cut
                   1282: 
1.95      albertel 1283: sub get_response_param {
                   1284:     my ($id,$name,$default)=@_;
                   1285:     my $parameter;
1.120     albertel 1286:     if ($env{'request.state'} eq 'construct' &&
1.95      albertel 1287: 	defined($Apache::inputtags::params{$name})) {
                   1288: 	$parameter=$Apache::inputtags::params{$name};
                   1289:     } else {
                   1290: 	$parameter=&Apache::lonnet::EXT("resource.$id.$name");
                   1291:     }
                   1292:     if (!defined($parameter) ||	$parameter eq '') {
                   1293: 	$parameter = $default;
                   1294:     }
                   1295:     return $parameter;
                   1296: }
1.87      albertel 1297: 
1.113     albertel 1298: sub submitted {
                   1299:     my ($who)=@_;
                   1300:     
                   1301:     # when scatron grading any submission is a submission
1.120     albertel 1302:     if ($env{'form.submitted'} eq 'scantron') { return 1; }
1.113     albertel 1303:     # if the caller only cared if this was a scantron submission
                   1304:     if ($who eq 'scantron') { return 0; }
                   1305:     # if the Submit Answer button for this particular part was pressed
                   1306:     my $partid=$Apache::inputtags::part;
1.159     albertel 1307:     if ($env{'form.submitted'} eq "part_$partid") {
                   1308: 	return 1;
                   1309:     }
                   1310:     if ($env{'form.submitted'} eq "yes"
                   1311: 	&& defined($env{'form.submit_'.$partid})) {
                   1312: 	return 1;
                   1313:     }
1.122     albertel 1314:     # Submit All button on a .page was pressed
                   1315:     if (defined($env{'form.all_submit'})) { return 1; }
1.204     bisitz   1316:     # otherwise no submission occurred
1.113     albertel 1317:     return 0;
                   1318: }
1.117     albertel 1319: 
1.130     albertel 1320: sub add_to_gradingqueue {
1.149     albertel 1321:     my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.131     albertel 1322:     if (   $courseid eq ''
                   1323: 	|| $symb eq ''
1.135     albertel 1324: 	|| $env{'request.state'} eq 'construct'
                   1325: 	|| $Apache::lonhomework::type ne 'problem') {
1.131     albertel 1326: 	return;
                   1327:     }
1.130     albertel 1328: 
                   1329:     my %queue_info = ( 'type' => 'problem',
                   1330: 		       'time' => time);
                   1331: 
                   1332:     if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
                   1333: 	$queue_info{'slot'}=
                   1334: 	     $Apache::lonhomework::history{"resource.0.checkedin.slot"};
                   1335:     }
                   1336: 
                   1337:     my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
                   1338:     if ($result ne 'ok') {
                   1339: 	&Apache::lonxml::error("add_to_queue said $result");
                   1340:     }
                   1341: }
                   1342: 
1.208     jms      1343: =pod 
                   1344: 
                   1345: =item check_status()
                   1346: 
                   1347: basically undef and 0 (both false) mean that they still have work to do
                   1348: and all true values mean that they can't do any more work
                   1349: 
                   1350: 	a return of undef means it is unattempted
1.246   ! raeburn  1351: 	a return of 0 means it is both attempted and still has tries and
        !          1352:                       is wrong or is only partially correct, and retries 
        !          1353:                       are allowed.
1.208     jms      1354: 	a return of 1 means it is marked correct
1.246   ! raeburn  1355: 	a return of 2 means they have exceeded maximum number of tries
        !          1356: 	a return of 3 means it is after the answer date
1.208     jms      1357: 
                   1358: =cut
                   1359: 
1.117     albertel 1360: sub check_status {
                   1361:     my ($id)=@_;
1.143     albertel 1362:     if (!defined($id)) { $id=$Apache::inputtags::part; }
1.117     albertel 1363:     my $curtime=&Apache::lonnet::EXT('system.time');
                   1364:     my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
1.236     raeburn  1365:     my $duedate=&Apache::lonhomework::due_date($id);
1.117     albertel 1366:     my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
                   1367:     if ( $opendate && $curtime > $opendate &&
                   1368:          $duedate && $curtime > $duedate &&
                   1369:          $answerdate && $curtime > $answerdate) {
                   1370:         return 3;
                   1371:     }
                   1372:     my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
1.246   ! raeburn  1373:     if ($status =~ /^correct/) { 
        !          1374:         my $awarded=&Apache::lonnet::EXT("user.resource.resource.$id.awarded");
        !          1375:         my $retrypartial=&Apache::lonnet::EXT("resource.$id.retrypartial");
        !          1376:         unless (($retrypartial =~ /^1|on|yes$/) && ($awarded <1))  {
        !          1377:             return 1;
        !          1378:         }
        !          1379:     }
1.117     albertel 1380:     if (!$status) { return undef; }
                   1381:     my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
                   1382:     if ($maxtries eq '') { $maxtries=2; }
                   1383:     my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
                   1384:     if ($curtries < $maxtries) { return 0; }
                   1385:     return 2;
                   1386: }
                   1387: 
1.177     albertel 1388: =pod
                   1389: 
1.210     raeburn  1390: =item setup_prior_tries_hash()
1.177     albertel 1391: 
                   1392:   Foreach each past .submission $func is called with 3 arguments
                   1393:      - the mode to set things up for (currently always 'grade')
                   1394:      - the stored .submission string
                   1395:      - The expansion of $data
                   1396: 
                   1397:   $data is an array ref containing elements that are either
                   1398:     - scalars that are other elements of the history hash to pass to $func
                   1399:     - ref to data to be passed untouched to $func
                   1400: 
1.221     raeburn  1401:   $questiontype is the questiontype (currently only passed in if
                   1402:       randomizebytry.
                   1403: 
1.177     albertel 1404: =cut
                   1405: 
1.162     albertel 1406: sub setup_prior_tries_hash {
1.221     raeburn  1407:     my ($func,$data,$questiontype) = @_;
1.162     albertel 1408:     my $part = $Apache::inputtags::part;
1.221     raeburn  1409:     my $id   = $Apache::inputtags::response[-1];
1.162     albertel 1410:     foreach my $i (1..$Apache::lonhomework::history{'version'}) {
1.221     raeburn  1411:         my $partprefix = "$i:resource.$part";
                   1412: 	my $sub_key   = "$partprefix.$id.submission";
1.162     albertel 1413: 	next if (!exists($Apache::lonhomework::history{$sub_key}));
1.221     raeburn  1414:         my $type_key = "$partprefix.type";
                   1415:         my $type = $Apache::lonhomework::history{$type_key};
1.162     albertel 1416: 	my @other_data;
1.221     raeburn  1417:         if (ref($data) eq 'ARRAY') {
                   1418: 	    foreach my $datum (@{ $data }) {
                   1419: 	        if (ref($datum)) {
                   1420: 		    push(@other_data,$datum);
                   1421: 	        } else {
                   1422: 		    my $info_key = "$i:resource.$part.$id.$datum";
                   1423: 		    push(@other_data,$Apache::lonhomework::history{$info_key});
                   1424: 	        }
1.162     albertel 1425: 	    }
1.221     raeburn  1426:         }
                   1427:         if ($questiontype eq 'randomizetry') { 
                   1428:             my $order_key = "$partprefix.$id.foilorder";
                   1429:             my @whichopts = &Apache::lonnet::str2array($Apache::lonhomework::history{$order_key});
                   1430:             if (@whichopts > 0) {
                   1431:                 shift(@other_data);
                   1432:                 unshift(@other_data,\@whichopts);
                   1433:             }
                   1434:         }
1.162     albertel 1435: 	my $output =
                   1436: 	    &$func('grade',
                   1437: 		   $Apache::lonhomework::history{$sub_key},
                   1438: 		   \@other_data);
                   1439: 	if (defined($output)) {
                   1440: 	    $Apache::inputtags::submission_display{$sub_key} = $output;
                   1441: 	}
                   1442:     }
                   1443: }
                   1444: 
1.1       albertel 1445: 1;
                   1446: __END__
1.38      albertel 1447:  
1.208     jms      1448: =pod
                   1449: 
1.209     www      1450: =cut

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