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- save the space by no indenting the answer
1: # The LearningOnline Network with CAPA 2: # various response type definitons response definition 3: # 4: # $Id: response.pm,v 1.134 2005/12/20 16:31:50 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: use Apache::lonnet; 33: 34: BEGIN { 35: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse')); 36: } 37: 38: sub start_response { 39: my ($parstack,$safeeval)=@_; 40: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval); 41: if ($id eq '') { $id = $Apache::lonxml::curdepth; } 42: if ($#Apache::inputtags::import > -1) { 43: &Apache::lonxml::debug("Turning :$id: into"); 44: $id = join('_',@Apache::inputtags::import).'_'.$id; 45: &Apache::lonxml::debug("New :$id:"); 46: } 47: push (@Apache::inputtags::response,$id); 48: push (@Apache::inputtags::responselist,$id); 49: @Apache::inputtags::inputlist=(); 50: if ($Apache::inputtags::part eq '' && 51: !$Apache::lonhomework::ignore_response_errors) { 52: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"')); 53: } 54: if ($Apache::inputtags::response_with_no_part && 55: $Apache::inputtags::part ne '0') { 56: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />'); 57: } 58: if ($Apache::inputtags::part eq '0') { 59: $Apache::inputtags::response_with_no_part=1; 60: } 61: return $id; 62: } 63: 64: sub end_response { 65: #pop @Apache::inputtags::response; 66: @Apache::inputtags::inputlist=(); 67: return ''; 68: } 69: 70: sub start_hintresponse { 71: my ($parstack,$safeeval)=@_; 72: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval); 73: if ($id eq '') { $id = $Apache::lonxml::curdepth; } 74: push (@Apache::inputtags::hint,$id); 75: push (@Apache::inputtags::hintlist,$id); 76: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]); 77: return $id; 78: } 79: 80: sub end_hintresponse { 81: pop @Apache::inputtags::hint; 82: if (defined($Apache::inputtags::paramstack[-1])) { 83: %Apache::inputtags::params= 84: @{ pop(@Apache::inputtags::paramstack) }; 85: } 86: return ''; 87: } 88: 89: my @randomseeds; 90: sub pushrandomnumber { 91: my $rand_alg=&Apache::lonnet::get_rand_alg(); 92: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' || 93: $rand_alg eq '64bit2') { 94: # do nothing 95: } else { 96: my @seed=&Math::Random::random_get_seed(); 97: push(@randomseeds,\@seed); 98: } 99: &Apache::response::setrandomnumber(@_); 100: } 101: sub poprandomnumber { 102: my $rand_alg=&Apache::lonnet::get_rand_alg(); 103: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' || 104: $rand_alg eq '64bit2') { 105: return; 106: } 107: my $seed=pop(@randomseeds); 108: if ($seed) { 109: &Math::Random::random_set_seed(@$seed); 110: } else { 111: &Apache::lonxml::error("Unable to restore random algorithm."); 112: } 113: } 114: 115: sub setrandomnumber { 116: my ($ignore_id2) = @_; 117: my $rndseed; 118: $rndseed=&Apache::structuretags::setup_rndseed(); 119: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); } 120: &Apache::lonxml::debug("randseed $rndseed"); 121: # $rndseed=unpack("%32i",$rndseed); 122: my $rand_alg=&Apache::lonnet::get_rand_alg(); 123: my ($rndmod,$rndmod2); 124: 125: my ($id1,$id2,$shift_amt); 126: if ($Apache::lonhomework::parsing_a_problem) { 127: $id1=$Apache::inputtags::part; 128: if (defined($Apache::inputtags::response[-1])) { 129: $id2=$Apache::inputtags::response[-1]; 130: } 131: $shift_amt=scalar(@Apache::inputtags::responselist); 132: } elsif ($Apache::lonhomework::parsing_a_task) { 133: $id1=$Apache::bridgetask::dimension; 134: if (!$ignore_id2 && defined($Apache::bridgetask::instance[-1])) { 135: $id2=$Apache::bridgetask::instance[-1]; 136: } 137: $shift_amt=scalar(@Apache::bridgetask::instance); 138: } 139: &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt"); 140: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' || 141: $rand_alg eq '64bit2') { 142: $rndmod=(&Apache::lonnet::numval($id1) << 10); 143: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); } 144: } elsif ($rand_alg eq '64bit3') { 145: $rndmod=(&Apache::lonnet::numval2($id1) << 10); 146: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); } 147: } elsif ($rand_alg eq '64bit4') { 148: my $shift=(4*$shift_amt)%30; 149: $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30)); 150: if (defined($id2)) { 151: $rndmod+=(&Apache::lonnet::numval3($id2) << $shift ); 152: } 153: } else { 154: ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2"); 155: } 156: 157: if ($rndseed =~/([,:])/) { 158: my $char=$1; 159: use integer; 160: my ($num1,$num2)=split(/\Q$char\E/,$rndseed); 161: $num1+=$rndmod; 162: $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod); 163: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); } 164: $rndseed=$num1.$char.$num2; 165: } else { 166: $rndseed+=$rndmod; 167: if($Apache::lonnet::_64bit) { 168: use integer; 169: $rndseed=(($rndseed<<32)>>32); 170: } 171: } 172: &Apache::lonxml::debug("randseed $rndmod $rndseed"); 173: &Apache::lonnet::setup_random_from_rndseed($rndseed); 174: return ''; 175: } 176: 177: sub meta_parameter_write { 178: my ($name,$type,$default,$display)=@_; 179: my $partref=$Apache::inputtags::part; 180: my $result='<parameter part="'.$Apache::inputtags::part.'"'; 181: if (defined($Apache::inputtags::response[-1])) { 182: $result.= ' id="'.$Apache::inputtags::response[-1].'"'; 183: $partref.='_'.$Apache::inputtags::response[-1]; 184: } 185: $result.= ' name="'.$name.'"'. 186: ' type="'.$type.'"'. 187: (defined($default)?' default="'.$default.'"':''). 188: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'') 189: .'></parameter>' 190: ."\n"; 191: return $result; 192: } 193: 194: sub meta_package_write { 195: my $name=shift; 196: my $result = '<parameter part="'.$Apache::inputtags::part.'"'; 197: if(defined($Apache::inputtags::response[-1])) { 198: $result.= ' id="'.$Apache::inputtags::response[-1].'"'; 199: } 200: $result.=' package="'.$name.'"></parameter>'."\n"; 201: return $result; 202: } 203: 204: sub meta_stores_write { 205: my ($name,$type,$display)=@_; 206: my $partref=$Apache::inputtags::part; 207: my $result = '<stores part="'.$Apache::inputtags::part.'"'; 208: if (defined($Apache::inputtags::response[-1])) { 209: $result.= ' id="'.$Apache::inputtags::response[-1].'"'; 210: $partref.='_'.$Apache::inputtags::response[-1]; 211: } 212: $result.= ' name="'.$name.'"'. 213: ' type="'.$type.'"'. 214: ' display="'.$display.' [Part: '.$partref.']"'. 215: "></stores>\n"; 216: } 217: 218: sub mandatory_part_meta { 219: # 220: # Autogenerate metadata for mandatory 221: # input (from RAT or lonparmset) and 222: # output (to lonspreadsheet) 223: # of each part 224: # 225: return 226: # &meta_parameter_write('opendate','date_start','', 227: # 'Opening Date'). 228: # &meta_parameter_write('duedate','date_end','', 229: # 'Due Date'). 230: # &meta_parameter_write('answerdate','date_start','', 231: # 'Show Answer Date'). 232: # &meta_parameter_write('weight','int_zeropos','', 233: # 'Available Points'). 234: # &meta_parameter_write('maxtries','int_pos','', 235: # 'Maximum Number of Tries'). 236: &meta_package_write('part'). 237: &meta_stores_write('solved','string', 238: 'Problem Status'). 239: &meta_stores_write('tries','int_zeropos', 240: 'Number of Attempts'). 241: &meta_stores_write('awarded','float', 242: 'Partial Credit Factor'); 243: # 244: # Note: responseid-specific data 'submission' and 'awarddetail' 245: # not available to spreadsheet -> skip here 246: # 247: } 248: 249: sub meta_part_order { 250: if (@Apache::inputtags::partlist) { 251: my @parts=@Apache::inputtags::partlist; 252: shift(@parts); 253: return '<partorder>'.join(',',@parts).'</partorder>'."\n"; 254: } else { 255: return '<partorder>0</partorder>'."\n"; 256: } 257: } 258: 259: sub meta_response_order { 260: if (@Apache::inputtags::responselist) { 261: return '<responseorder>'.join(',',@Apache::inputtags::responselist). 262: '</responseorder>'."\n"; 263: } 264: } 265: 266: sub check_for_previous { 267: my ($curresponse,$partid,$id) = @_; 268: my %previous; 269: $previous{'used'} = 0; 270: foreach my $key (sort(keys(%Apache::lonhomework::history))) { 271: if ($key =~ /resource\.$partid\.$id\.submission$/) { 272: &Apache::lonxml::debug("Trying $key"); 273: my $pastresponse=$Apache::lonhomework::history{$key}; 274: if ($pastresponse eq $curresponse) { 275: $previous{'used'} = 1; 276: my $history; 277: if ( $key =~ /^(\d+):/ ) { 278: $history=$1; 279: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"}; 280: $previous{'last'}='0'; 281: push(@{ $previous{'version'} },$history); 282: } else { 283: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"}; 284: $previous{'last'}='1'; 285: } 286: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; } 287: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:"); 288: } 289: } 290: } 291: &Apache::lonhomework::showhash(%previous); 292: return %previous; 293: } 294: 295: sub handle_previous { 296: my ($previous,$ad)=@_; 297: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) { 298: if ($$previous{'last'}) { 299: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST'); 300: push(@Apache::inputtags::previous_version,$$previous{'version'}); 301: } elsif ($Apache::lonhomework::type ne 'survey') { 302: push(@Apache::inputtags::previous,'PREVIOUSLY_USED'); 303: push(@Apache::inputtags::previous_version,$$previous{'version'}); 304: } 305: } 306: } 307: 308: sub view_or_modify { 309: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); 310: my $myself=0; 311: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) { 312: $myself=1; 313: } 314: my $vgr=&Apache::lonnet::allowed('vgr',$courseid); 315: my $mgr=&Apache::lonnet::allowed('vgr',$courseid); 316: if ($mgr) { return "M"; } 317: if ($vgr) { return "V"; } 318: if ($myself) { return "V"; } 319: return ''; 320: } 321: 322: sub start_dataresponse { 323: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 324: my $id = &Apache::response::start_response($parstack,$safeeval); 325: my $result; 326: if ($target eq 'web') { 327: $result = $token->[2]->{'display'}.':'; 328: } elsif ($target eq 'meta') { 329: $result = &Apache::response::meta_stores_write($token->[2]->{'name'}, 330: $token->[2]->{'type'}, 331: $token->[2]->{'display'}); 332: $result .= &Apache::response::meta_package_write('dataresponse'); 333: } 334: return $result; 335: } 336: 337: sub end_dataresponse { 338: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 339: my $result; 340: if ( $target eq 'web' ) { 341: } elsif ($target eq 'grade' ) { 342: if ( defined $env{'form.submitted'}) { 343: my ($symb,$courseid,$domain,$name)=&Apache::lonxml::whichuser(); 344: my $allowed=&Apache::lonnet::allowed('mgr',$courseid); 345: if ($allowed) { 346: &Apache::response::setup_params('dataresponse',$safeeval); 347: my $partid = $Apache::inputtags::part; 348: my $id = $Apache::inputtags::response['-1']; 349: my $response = $env{'form.HWVAL_'.$id}; 350: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval); 351: if ( $response =~ /[^\s]/) { 352: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response; 353: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response; 354: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED'; 355: } 356: } else { 357: $result='Not Permitted to change values.' 358: } 359: } 360: } 361: &Apache::response::end_response; 362: return $result; 363: } 364: 365: sub start_customresponse { 366: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 367: my $id = &Apache::response::start_response($parstack,$safeeval); 368: push(@Apache::lonxml::namespace,'customresponse'); 369: my $result; 370: undef($Apache::response::custom_answer); 371: &Apache::lonxml::register('Apache::response',('answer')); 372: if ($target eq 'web') { 373: if ( &Apache::response::show_answer() ) { 374: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack, 375: $safeeval); 376: $Apache::inputtags::answertxt{$id}=$answer; 377: } 378: } elsif ($target eq 'edit') { 379: $result.=&Apache::edit::tag_start($target,$token); 380: $result.=&Apache::edit::text_arg('String to display for answer:', 381: 'answerdisplay',$token); 382: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row(); 383: } elsif ($target eq 'modified') { 384: my $constructtag; 385: $constructtag=&Apache::edit::get_new_args($token,$parstack, 386: $safeeval,'answerdisplay'); 387: if ($constructtag) { 388: $result = &Apache::edit::rebuild_tag($token); 389: $result.=&Apache::edit::handle_insert(); 390: } 391: } elsif ($target eq 'answer' || $target eq 'grade') { 392: &Apache::response::reset_params(); 393: } elsif ($target eq 'meta') { 394: $result .= &Apache::response::meta_package_write('customresponse'); 395: } 396: return $result; 397: } 398: 399: sub end_customresponse { 400: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 401: my $result; 402: my $part=$Apache::inputtags::part; 403: my $id=$Apache::inputtags::response[-1]; 404: if ( $target eq 'grade' && &Apache::response::submitted() ) { 405: my $response = &Apache::response::getresponse(); 406: if ( $response =~ /[^\s]/ && 407: $Apache::response::custom_answer_type eq 'loncapa/perl') { 408: if (!$Apache::lonxml::default_homework_loaded) { 409: &Apache::lonxml::default_homework_load($safeeval); 410: } 411: my %previous = &Apache::response::check_for_previous($response, 412: $part,$id); 413: $Apache::lonhomework::results{"resource.$part.$id.submission"}= 414: $response; 415: my $error; 416: ${$safeeval->varglob('LONCAPA::customresponse_submission')}= 417: $response; 418: 419: my $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer.'}',$safeeval); 420: if (!&Apache::inputtags::valid_award($award)) { 421: $error = $award; 422: $award = 'ERROR'; 423: } 424: &Apache::response::handle_previous(\%previous,$award); 425: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}= 426: $award; 427: if ($error) { 428: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}= 429: $error; 430: } 431: } 432: } 433: pop(@Apache::lonxml::namespace); 434: &Apache::lonxml::deregister('Apache::response',('answer')); 435: &Apache::response::end_response(); 436: return $result; 437: } 438: 439: sub start_answer { 440: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 441: my $result; 442: $Apache::response::custom_answer= 443: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser); 444: $Apache::response::custom_answer_type= 445: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval)); 446: $Apache::response::custom_answer_type =~ s/\s+//g; 447: if ($target eq "edit" ) { 448: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm'); 449: $result.=&Apache::edit::editfield($token->[1], 450: $Apache::response::custom_answer, 451: '',80,4); 452: } elsif ( $target eq "modified" ) { 453: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser); 454: } 455: return $result; 456: } 457: 458: sub end_answer { 459: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 460: if ($target eq 'edit' ) { 461: return &Apache::edit::end_table(); 462: } 463: } 464: 465: sub decide_package { 466: my ($tagstack)=@_; 467: my $package; 468: if ($$tagstack[-1] eq 'parameter') { 469: $package='part'; 470: } else { 471: my $i=-1; 472: while (defined($$tagstack[$i])) { 473: if ($$tagstack[$i] =~ /(response|hint)$/) { 474: $package=$$tagstack[$i]; 475: last; 476: } 477: $i--; 478: } 479: } 480: return $package; 481: } 482: 483: sub start_responseparam { 484: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 485: my $result=''; 486: if ($target eq 'meta') { 487: $result = &meta_parameter_write($token->[2]->{'name'}, 488: $token->[2]->{'type'}, 489: $token->[2]->{'default'}, 490: $token->[2]->{'description'}); 491: } elsif ($target eq 'edit') { 492: $result.=&Apache::edit::tag_start($target,$token); 493: my $optionlist; 494: my $package=&decide_package($tagstack); 495: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) { 496: if ($key =~ /^\Q$package\E&(.*)&display$/) { 497: $optionlist.='<option value="'.$1.'">'. 498: $Apache::lonnet::packagetab{$key}.'</option>'; 499: } 500: } 501: if (defined($optionlist)) { 502: $result.='Use template: <select name="'. 503: &Apache::edit::html_element_name('parameter_package').'">'. 504: '<option value=""></option>'.$optionlist.'</select><br />'; 505: } 506: $result.=&Apache::edit::text_arg('Name:','name',$token). 507: &Apache::edit::text_arg('Type:','type',$token). 508: &Apache::edit::text_arg('Description:','description',$token). 509: &Apache::edit::text_arg('Default:','default',$token). 510: "</td></tr>"; 511: $result.=&Apache::edit::end_table; 512: } elsif ($target eq 'modified') { 513: my $constructtag=&Apache::edit::get_new_args($token,$parstack, 514: $safeeval,'name','type', 515: 'description','default'); 516: my $element=&Apache::edit::html_element_name('parameter_package'); 517: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') { 518: my $name=$env{"form.$element"}; 519: my $tag=&decide_package($tagstack); 520: $token->[2]->{'name'}=$name; 521: $token->[2]->{'type'}= 522: $Apache::lonnet::packagetab{"$tag&$name&type"}; 523: $token->[2]->{'description'}= 524: $Apache::lonnet::packagetab{"$tag&$name&display"}; 525: $token->[2]->{'default'}= 526: $Apache::lonnet::packagetab{"$tag&$name&default"}; 527: $constructtag=1; 528: } 529: if ($constructtag) { 530: $result = &Apache::edit::rebuild_tag($token); 531: $result.=&Apache::edit::handle_insert(); 532: } 533: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' || 534: $target eq 'tex' || $target eq 'analyze' ) { 535: if ($env{'request.state'} eq 'construct') { 536: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval); 537: my $default=&Apache::lonxml::get_param('default',$parstack, 538: $safeeval); 539: if ($name) {$Apache::inputtags::params{$name}=$default;} 540: } 541: } 542: return $result; 543: } 544: 545: sub end_responseparam { 546: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; 547: if ($target eq 'edit') { return ('','no'); } 548: return ''; 549: } 550: 551: sub start_parameter { 552: return &start_responseparam(@_); 553: } 554: 555: sub end_parameter { 556: return &end_responseparam(@_); 557: } 558: 559: sub reset_params { 560: %Apache::inputtags::params=(); 561: } 562: 563: sub setup_params { 564: my ($tag,$safeeval) = @_; 565: 566: if ($env{'request.state'} eq 'construct') { return; } 567: my %paramlist=(); 568: foreach my $key (keys(%Apache::lonnet::packagetab)) { 569: if ($key =~ /^$tag/) { 570: my ($package,$name) = split(/&/,$key); 571: $paramlist{$name}=1; 572: } 573: } 574: foreach my $key (keys(%paramlist)) { 575: my $entry= 'resource.'.$Apache::inputtags::part; 576: if (defined($Apache::inputtags::response[-1])) { 577: $entry.='_'.$Apache::inputtags::response[-1]; 578: } 579: $entry.='.'.$key; 580: &Apache::lonxml::debug("looking for $entry"); 581: my $value = &Apache::lonnet::EXT("$entry"); 582: &Apache::lonxml::debug("$key has value :$value:"); 583: if ($value eq 'con_lost' || $value =~ /^error:/) { 584: &Apache::lonxml::debug("using nothing"); 585: $Apache::inputtags::params{$key}=''; 586: } else { 587: my $string="{return qq\0".$value."\0}"; 588: my $newvalue=&Apache::run::run($string,$safeeval,1); 589: if (defined($newvalue)) { $value=$newvalue; } 590: $Apache::inputtags::params{$key}=$value; 591: } 592: } 593: } 594: 595: { 596: my @answer_bits; 597: 598: sub answer_header { 599: my ($type,$increment) = @_; 600: my $result; 601: if ($env{'form.answer_output_mode'} eq 'tex') { 602: undef(@answer_bits); 603: my $bit; 604: if ($Apache::lonhomework::type eq 'exam') { 605: $bit = ($Apache::lonxml::counter+$increment).') '; 606: } else { 607: $bit .= ' Answer for Part: \verb|'. 608: $Apache::inputtags::part.'| '; 609: } 610: push(@answer_bits,$bit); 611: } else { 612: $result = '<table border="1"><tr>'; 613: if ($Apache::lonhomework::type eq 'exam') { 614: $result .= '<td>'.$Apache::lonxml::counter. ')</td>'; 615: } else { 616: $result .= '<td>Answer for Part:'.$Apache::inputtags::part.'</td>'; 617: } 618: $result .= "\n"; 619: } 620: return $result; 621: } 622: 623: sub answer_part { 624: my ($type,$answer) = @_; 625: my $result; 626: if ($env{'form.answer_output_mode'} eq 'tex') { 627: my $to_use='|'; 628: foreach my $value (32..126) { 629: my $char=pack('c',$value); 630: if ($answer !~ /\Q$char\E/) { 631: $to_use=$char; 632: last; 633: } 634: } 635: if ($answer ne '') { 636: push(@answer_bits,'\verb'.$to_use.$answer.$to_use); 637: } 638: } else { 639: $result = '<td>'.$answer.'</td>'; 640: } 641: return $result; 642: } 643: 644: sub answer_footer { 645: my ($type) = @_; 646: my $result; 647: if ($env{'form.answer_output_mode'} eq 'tex') { 648: my $columns = scalar(@answer_bits); 649: $result = ' \vskip 0 mm \noindent \begin{tabular}{|'.'c|'x$columns.'}\hline '; 650: $result .= join(' & ',@answer_bits); 651: $result .= ' \\\\ \\hline \end{tabular} \vskip 0 mm '; 652: } else { 653: $result = '</tr></table>'; 654: } 655: return $result; 656: } 657: 658: } 659: 660: sub showallfoils { 661: if (defined($env{'form.showallfoils'})) { 662: my ($symb)=&Apache::lonxml::whichuser(); 663: if (($env{'request.state'} eq 'construct') || 664: ($env{'user.adv'} && $symb eq '') || 665: ($Apache::lonhomework::viewgrades) ) { 666: return 1; 667: } 668: } 669: if ($Apache::lonhomework::type eq 'survey') { return 1; } 670: return 0; 671: } 672: 673: sub getresponse { 674: my ($temp,$resulttype)=@_; 675: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1']; 676: my $response; 677: if (!defined($temp)) { 678: $temp=1; 679: } else { 680: $formparm.=":$temp"; 681: } 682: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7, 683: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14, 684: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21, 685: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25); 686: if ($env{'form.submitted'} eq 'scantron') { 687: my $part = $Apache::inputtags::part; 688: my $id = $Apache::inputtags::response[-1]; 689: $response = $env{'scantron.'.($Apache::lonxml::counter+$temp-1). 690: '.answer'}; 691: # save bubbled letter for later 692: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.= 693: $response; 694: if ($resulttype ne 'letter') { 695: if ($resulttype eq 'A is 1') { 696: $response = $let_to_num{$response}+1; 697: } else { 698: $response = $let_to_num{$response}; 699: } 700: } 701: } else { 702: $response = $env{$formparm}; 703: } 704: return $response; 705: } 706: 707: sub repetition { 708: my $id = $Apache::inputtags::part; 709: my $weight = &Apache::lonnet::EXT("resource.$id.weight"); 710: if (!defined($weight) || ($weight eq '')) { $weight=1; } 711: my $repetition = int($weight/10); 712: if ($weight % 10 != 0) { $repetition++; } 713: return $repetition; 714: } 715: 716: sub scored_response { 717: my ($part,$id)=@_; 718: my $repetition=&repetition(); 719: my $score=0; 720: for (my $i=0;$i<$repetition;$i++) { 721: # A is 1, B is 2, etc. (get response return 0-9 and then we add 1) 722: my $increase=&Apache::response::getresponse($i+1); 723: if ($increase ne '') { $score+=$increase+1; } 724: } 725: my $weight = &Apache::lonnet::EXT("resource.$part.weight"); 726: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; } 727: my $pcr=$score/$weight; 728: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr; 729: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}= 730: 'ASSIGNED_SCORE'; 731: return $repetition; 732: } 733: 734: sub whichorder { 735: my ($max,$randomize,$showall,$hash)=@_; 736: #&Apache::lonxml::debug("man $max randomize $randomize"); 737: if (!defined(@{ $$hash{'names'} })) { return; } 738: my @names = @{ $$hash{'names'} }; 739: my @whichopt =(); 740: my (%top,@toplist,%bottom,@bottomlist); 741: if (!($showall || ($randomize eq 'no'))) { 742: my $current=0; 743: foreach my $name (@names) { 744: $current++; 745: if ($$hash{"$name.location"} eq 'top') { 746: $top{$name}=$current; 747: } elsif ($$hash{"$name.location"} eq 'bottom') { 748: $bottom{$name}=$current; 749: } 750: } 751: } 752: my $topcount=0; 753: my $bottomcount=0; 754: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall) 755: && ($#names > -1)) { 756: #&Apache::lonxml::debug("Have $#whichopt max is $max"); 757: my $aopt; 758: if ($showall || ($randomize eq 'no')) { 759: $aopt=0; 760: } else { 761: $aopt=int(&Math::Random::random_uniform() * ($#names+1)); 762: } 763: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt"); 764: $aopt=splice(@names,$aopt,1); 765: #&Apache::lonxml::debug("Picked $aopt"); 766: if ($top{$aopt}) { 767: $toplist[$top{$aopt}]=$aopt; 768: $topcount++; 769: } elsif ($bottom{$aopt}) { 770: $bottomlist[$bottom{$aopt}]=$aopt; 771: $bottomcount++; 772: } else { 773: push (@whichopt,$aopt); 774: } 775: } 776: for (my $i=0;$i<=$#toplist;$i++) { 777: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) } 778: } 779: for (my $i=0;$i<=$#bottomlist;$i++) { 780: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) } 781: } 782: return @whichopt; 783: } 784: 785: sub show_answer { 786: my $part = $Apache::inputtags::part; 787: my $award = $Apache::lonhomework::history{"resource.$part.solved"}; 788: my $status = $Apache::inputtags::status[-1]; 789: return ( ($award =~ /^correct/ 790: && lc($Apache::lonhomework::problemstatus) ne 'no') 791: || $status eq "SHOW_ANSWER"); 792: } 793: 794: sub analyze_store_foilgroup { 795: my ($shown,$attrs)=@_; 796: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]"; 797: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) { 798: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; } 799: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name); 800: foreach my $attr (@$attrs) { 801: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} = 802: $Apache::response::foilgroup{"$name.".$attr}; 803: } 804: } 805: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown }); 806: } 807: 808: sub check_if_computed { 809: my ($token,$parstack,$safeeval,$name)=@_; 810: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval); 811: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) { 812: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]"; 813: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1; 814: } 815: } 816: 817: sub pick_foil_for_concept { 818: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_; 819: if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; } 820: my @names = @{ $Apache::response::conceptgroup{'names'} }; 821: my $pick=int(&Math::Random::random_uniform() * ($#names+1)); 822: my $name=$names[$pick]; 823: push @{ $Apache::response::foilgroup{'names'} }, $name; 824: foreach my $attr (@$attrs) { 825: $Apache::response::foilgroup{"$name.".$attr} = 826: $Apache::response::conceptgroup{"$name.".$attr}; 827: } 828: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval); 829: $Apache::response::foilgroup{"$name.concept"} = $concept; 830: &Apache::lonxml::debug("Selecting $name in $concept"); 831: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]"; 832: if ($target eq 'analyze') { 833: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} }, 834: $concept); 835: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}= 836: $Apache::response::conceptgroup{'names'}; 837: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) { 838: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} }, 839: $name); 840: foreach my $attr (@$attrs) { 841: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}= 842: $Apache::response::conceptgroup{"$name.$attr"}; 843: } 844: } 845: } 846: push(@{ $hinthash->{"$part_id.concepts"} },$concept); 847: $hinthash->{"$part_id.concept.$concept"}= 848: $Apache::response::conceptgroup{'names'}; 849: 850: } 851: 852: sub get_response_param { 853: my ($id,$name,$default)=@_; 854: my $parameter; 855: if ($env{'request.state'} eq 'construct' && 856: defined($Apache::inputtags::params{$name})) { 857: $parameter=$Apache::inputtags::params{$name}; 858: } else { 859: $parameter=&Apache::lonnet::EXT("resource.$id.$name"); 860: } 861: if (!defined($parameter) || $parameter eq '') { 862: $parameter = $default; 863: } 864: return $parameter; 865: } 866: 867: sub submitted { 868: my ($who)=@_; 869: 870: # when scatron grading any submission is a submission 871: if ($env{'form.submitted'} eq 'scantron') { return 1; } 872: # if the caller only cared if this was a scantron submission 873: if ($who eq 'scantron') { return 0; } 874: # if the Submit Answer button for this particular part was pressed 875: my $partid=$Apache::inputtags::part; 876: if (defined($env{'form.submit_'.$partid})) { return 1; } 877: # Submit All button on a .page was pressed 878: if (defined($env{'form.all_submit'})) { return 1; } 879: # otherwise no submission occured 880: return 0; 881: } 882: 883: sub add_to_gradingqueue { 884: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); 885: if ( $courseid eq '' 886: || $symb eq '' 887: || $env{'request.state'} eq 'construct') { 888: return; 889: } 890: 891: my %queue_info = ( 'type' => 'problem', 892: 'time' => time); 893: 894: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) { 895: $queue_info{'slot'}= 896: $Apache::lonhomework::history{"resource.0.checkedin.slot"}; 897: } 898: 899: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info); 900: if ($result ne 'ok') { 901: &Apache::lonxml::error("add_to_queue said $result"); 902: } 903: } 904: 905: # basically undef and 0 (both false) mean that they still have work to do 906: # and all true values mean that they can't do any more work 907: # 908: # a return of undef means it is unattempted 909: # a return of 0 means it is attmpted and wrong but still has tries 910: # a return of 1 means it is marked correct 911: # a return of 2 means they have exceed maximum number of tries 912: # a return of 3 means it after the answer date 913: sub check_status { 914: my ($id)=@_; 915: if (!$id) { $id=$Apache::linputtags::part; } 916: my $curtime=&Apache::lonnet::EXT('system.time'); 917: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate"); 918: my $duedate=&Apache::lonnet::EXT("resource.$id.duedate"); 919: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate"); 920: if ( $opendate && $curtime > $opendate && 921: $duedate && $curtime > $duedate && 922: $answerdate && $curtime > $answerdate) { 923: return 3; 924: } 925: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved"); 926: if ($status =~ /^correct/) { return 1; } 927: if (!$status) { return undef; } 928: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries"); 929: if ($maxtries eq '') { $maxtries=2; } 930: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries"); 931: if ($curtries < $maxtries) { return 0; } 932: return 2; 933: } 934: 935: 1; 936: __END__ 937: