Annotation of loncom/homework/caparesponse/caparesponse.pm, revision 1.89

1.3       albertel    1: # The LearningOnline Network with CAPA
                      2: # caparesponse definition
1.47      albertel    3: #
1.89    ! albertel    4: # $Id: caparesponse.pm,v 1.88 2003/04/07 23:14:52 albertel Exp $
1.47      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: #
1.3       albertel   28: 
                     29: package Apache::caparesponse;
                     30: use strict;
1.4       albertel   31: use capa;
1.3       albertel   32: 
1.50      harris41   33: BEGIN {
1.89    ! albertel   34:     &Apache::lonxml::register('Apache::caparesponse',('caparesponse','numericalresponse','stringresponse','formularesponse'));
1.3       albertel   35: }
                     36: 
1.89    ! albertel   37: sub start_numericalresponse {
        !            38:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
        !            39:     my $id = &Apache::response::start_response($parstack,$safeeval);
        !            40:     my $result;
        !            41:     if ($target eq 'edit') {
        !            42: 	$result.=&Apache::edit::tag_start($target,$token);
        !            43: 	$result.=&Apache::edit::text_arg('Answer:','answer',$token);
        !            44: 	if ($token->[1] eq 'numericalresponse') {
        !            45: 	    $result.=&Apache::edit::text_arg('Unit:','unit',$token,5).
        !            46: 		&Apache::loncommon::help_open_topic('Physical_Units');
        !            47: 	    $result.=&Apache::edit::text_arg('Format:','format',$token,4).
        !            48: 		&Apache::loncommon::help_open_topic('Numerical_Response_Format');
        !            49: 	} elsif ($token->[1] eq 'stringresponse') {
        !            50: 	    $result.=&Apache::edit::select_arg('Type:','type',
        !            51: 			 [['cs','Case Sensitive'],['ci','Case Insensitive'],
        !            52: 			  ['mc','Case Insensitive, Any Order']],$token);
        !            53: 	} elsif ($token->[1] eq 'formularesponse') {
        !            54: 	    $result.=&Apache::edit::text_arg('Sample Points:','samples',
        !            55: 					     $token,40).
        !            56: 	      &Apache::loncommon::help_open_topic('Formula_Response_Sampling');
        !            57: 	}
        !            58: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
        !            59:     } elsif ($target eq 'modified') {
        !            60: 	my $constructtag;
        !            61: 	if ($token->[1] eq 'numericalresponse') {
        !            62: 	    $constructtag=&Apache::edit::get_new_args($token,$parstack,
        !            63: 						      $safeeval,'answer',
        !            64: 						      'unit','format');
        !            65: 	} elsif ($token->[1] eq 'stringresponse') {
        !            66: 	    $constructtag=&Apache::edit::get_new_args($token,$parstack,
        !            67: 						      $safeeval,'answer',
        !            68: 						      'type');
        !            69: 	} elsif ($token->[1] eq 'formularesponse') {
        !            70: 	    $constructtag=&Apache::edit::get_new_args($token,$parstack,
        !            71: 						      $safeeval,'answer',
        !            72: 						      'samples');
        !            73: 	}
        !            74: 	if ($constructtag) {
        !            75: 	    $result = &Apache::edit::rebuild_tag($token);
        !            76: 	    $result.=&Apache::edit::handle_insert();
1.22      albertel   77: 	}
1.89    ! albertel   78:     } elsif ($target eq 'meta') {
        !            79: 	$result=&Apache::response::meta_package_write('numericalresponse');
        !            80:     } elsif ($target eq 'answer' || $target eq 'grade') {
        !            81: 	&Apache::response::reset_params();
1.16      albertel   82:     }
1.89    ! albertel   83:     return $result;
1.21      albertel   84: }
                     85: 
1.89    ! albertel   86: sub end_numericalresponse {
        !            87:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !            88:     my $result = '';
        !            89:     if (!$Apache::lonxml::default_homework_loaded) {
        !            90: 	&Apache::lonxml::default_homework_load($safeeval);
1.34      albertel   91:     }
1.89    ! albertel   92:     if ( $target eq 'grade' ) {
        !            93: 	if ( defined $ENV{'form.submitted'}) {
        !            94: 	    &Apache::response::setup_params($$tagstack[-1]);
        !            95: 	    $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
        !            96: 	    my $partid = $Apache::inputtags::part;
        !            97: 	    my $id = $Apache::inputtags::response['-1'];
        !            98: 	    my $response = &Apache::response::getresponse();
        !            99: 	    if ( $response =~ /[^\s]/) {
        !           100: 		my $ad;
        !           101: 		my %previous = &Apache::response::check_for_previous($response,$partid,$id);
        !           102: 		$Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
        !           103: 		&Apache::lonxml::debug("submitted a $response<br>\n");
        !           104: 		&Apache::lonxml::debug($$parstack[$#$parstack] . "\n<br>");
        !           105: 		if ($Apache::lonhomework::type eq 'exam' &&
        !           106: 		    ($$tagstack[-1] eq 'numericalresponse')) {
        !           107: 		    &Apache::response::setrandomnumber();
        !           108: 		    #FIXME the 8 here is based off of number of powers need a parameter
        !           109: 		    my $ind=&Math::Random::random_uniform_integer(1,0,8);
        !           110: 		    if ($ind eq $response) { $ad='CORRECT'; } else { $ad='INCORRECT'; }
        !           111: 		} else {
        !           112: 		    $response =~ s/\\/\\\\/g;
        !           113: 		    $response =~ s/\'/\\\'/g;
        !           114: 		    &Apache::lonxml::debug("current $response");
        !           115: 		    my $expression="&caparesponse_check_list('".$response."','".
        !           116: 			$$parstack[-1];
        !           117: 		    foreach my $key (keys(%Apache::inputtags::params)) {
        !           118: 			$expression.= ';my $'. #'
        !           119: 			    $key.'="'.$Apache::inputtags::params{$key}.'"';
        !           120: 		    }
        !           121: 		    if ($$tagstack[-1] eq 'formularesponse') {
        !           122: 			$expression.=';my $type="fml";';
        !           123: 		    } elsif ($$tagstack[-1] eq 'numericalresponse') {
        !           124: 			$expression.=';my $type="float";';
        !           125: 		    }
        !           126: 		    $expression.="');";
        !           127: 		    $result = &Apache::run::run($expression,$safeeval);
        !           128: 		    my ($awards) = split /:/ , $result;
        !           129: 		    ($ad) = &Apache::inputtags::finalizeawards(split /,/ , $awards);
        !           130: 		    &Apache::lonxml::debug("$expression");
        !           131: 		    &Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");
        !           132: 		}
        !           133: 		&Apache::response::handle_previous(\%previous,$ad);
        !           134: 		$Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad;
        !           135: 		$result='';
        !           136: 	    }
        !           137: 	}
        !           138:     } elsif ($target eq 'web' || $target eq 'tex') {
        !           139: 	my $award = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
        !           140: 	my $status = $Apache::inputtags::status['-1'];
        !           141: 	if ($award =~ /^correct/ || $status eq "SHOW_ANSWER" ) {
        !           142: 	    my (@answers)=&Apache::lonxml::get_param_var('answer',$parstack,
        !           143: 							 $safeeval);
        !           144: 	    my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,
        !           145: 							 $safeeval);
        !           146: 	    my $unit=&Apache::lonxml::get_param_var('unit',$parstack,
        !           147: 						    $safeeval);
        !           148: 
        !           149: 	    if ($target eq 'web') {
        !           150: 		$result="<br />The correct answer is ";
        !           151: 	    } elsif ($target eq 'tex') {
        !           152: 		#$result='\vskip 0 mm The correct answer is \\texttt{';
        !           153: 	    }
        !           154: 	    for (my $i=0; $i <= $#answers; $i++) {
        !           155: 		my $answer=$answers[$i];
        !           156: 		my $format;
        !           157: 		if ($#formats > 0) {
        !           158: 		    $format=$formats[$i];
        !           159: 		} else {
        !           160: 		    $format=$formats[0];
        !           161: 		}
        !           162: 		my $formatted;
        !           163: 		if ((defined($format)) && ($format ne '')) {
        !           164: 		    &Apache::lonxml::debug("formatting with :$format: answer :$answer:");
        !           165: 		    $formatted=sprintf('%.'.$format,$answer).',';
        !           166: 		} else {
        !           167: 		    &Apache::lonxml::debug("no format answer :$answer:");
        !           168: 		    $formatted="$answer,";
        !           169: 		}
        !           170: 		
        !           171: 		if ($target eq 'tex') {
        !           172: 		    $formatted='';
        !           173: 		    #$formatted=&Apache::lonxml::latex_special_symbols($formatted);
        !           174: 		}
        !           175: 		$result.=$formatted;
        !           176: 	    }
        !           177: 	    chop $result;
        !           178: 	    if ($target eq 'web') {
        !           179: 		$result.=" $unit.<br />";
        !           180: 	    } elsif ($target eq 'tex') {
        !           181: 		#$result.=&Apache::lonxml::latex_special_symbols($unit);
        !           182: 		#$result.="}. \\vskip 0 mm ";
        !           183: 	    }
        !           184: 	}
        !           185: 	if ($Apache::lonhomework::type eq 'exam') {
        !           186: 	    my (@answers)=&Apache::lonxml::get_param_var('answer',$parstack,
        !           187: 							 $safeeval);
        !           188: 	    my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,
        !           189: 							 $safeeval);
        !           190: 	    my $unit=&Apache::lonxml::get_param_var('unit',$parstack,
        !           191: 						    $safeeval);
        !           192: 	    my $number_of_bubbles = 8; #default values for number of bubbles
        !           193: 	    my @bubbles_values = (); 
        !           194: 	    my @factors = (1.13,1.17,1.25,1.33,1.45); #default values of factors
        !           195: 	    my @powers = (1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0); #default values for powers
1.88      albertel  196: 	    &Apache::response::setrandomnumber();
1.89    ! albertel  197: 	    my $ind=&Math::Random::random_uniform_integer(1,0,$#powers);
        !           198: 	    my $power = $powers[$ind];
        !           199: 	    $ind=&Math::Random::random_uniform_integer(1,0,$#factors);
        !           200: 	    my $factor = $factors[$ind];
        !           201: 	    for ($ind=0;$ind<$number_of_bubbles;$ind++) {
        !           202: 		$bubbles_values[$ind] = $answers[0]*($factor**($power-$powers[$#powers-$ind]));
        !           203: 	    }
        !           204: 	    my @alphabet=('A'..'Z');
        !           205: 	    if ($target eq 'web') {
        !           206: 		if ($$tagstack[-1] eq 'numericalresponse') {
        !           207: 		    my $id=$Apache::inputtags::response[-1];
        !           208: 		    if ($unit=~/\S/) {$result.=' (in '.$unit.')<br /><br />';}
        !           209: 		    $result.= '<table border="1"><tr>';
        !           210: 		    for ($ind=0;$ind<$number_of_bubbles;$ind++) {
        !           211: 			my $ans;
        !           212: 			if ($formats[0] ne '') {
        !           213: 			    $ans = sprintf('%.'.$formats[0],$bubbles_values[$ind]);
        !           214: 			} else {
        !           215: 			    my $badans = $bubbles_values[$ind];
        !           216: 			    my $format = ''; 
        !           217: 			    #What is the number? (integer,decimal,floating point)
        !           218: 			    if ($badans=~/^(\d*\.?\d*)(E|e)(\d*)$/) {
        !           219: 				$format = 'e'.$2;
        !           220: 			    } elsif ($badans=~/^(\d*)\.(\d*)$/) {
        !           221: 				$format = '4f';
        !           222: 			    } elsif ($badans=~/^(\d*)$/) {
        !           223: 				$format = 'd';
        !           224: 			    }
        !           225: 			    $ans = sprintf('%.'.$format,$bubbles_values[$ind]);
        !           226: 			}
        !           227: 			$result.='<td><input type="radio" name="HWVAL_'.$id.'" value="'.$ans.'"><b>'.$alphabet[$ind].'</b>: '.$ans.'</td>';
        !           228: 		    }
        !           229: 		    $result.='</tr></table>';
        !           230: 		} elsif ($$tagstack[-1] eq 'formularesponse') {
        !           231: 		    $result.= '<br /><br /><font color="red"><textarea name="formulainput" rows="4" cols="50"> </textarea></font> <br /><br />';
        !           232: 		}
        !           233: 	    } elsif ($target eq 'tex') {
        !           234: 		if (defined $unit and $Apache::lonhomework::type eq 'exam') {
        !           235: 		    $result.=' \textit{(in} \verb|'.$unit.'|\textit{)} ';
        !           236: 		}
        !           237: 		if ($$tagstack[-1] eq 'numericalresponse') {
        !           238: 		    my $max_val = 0;
        !           239: 		    if ($formats[0]=~m/^(\d+)E([^\d]*)(\d*)$/) {
        !           240: 			$max_val=$1+$2+4;
        !           241: 		    } else {
        !           242: 			$max_val=4;
        !           243: 		    }
        !           244: 		    $max_val = int(0.9*$ENV{'form.textwidth'}/(($max_val+6)*2));
        !           245: 		    my $celllength = 0.9*$ENV{'form.textwidth'}/$max_val-10;
        !           246: 		    my @table_range = ();
        !           247: 		    my $number_of_tables = int($number_of_bubbles/$max_val);
        !           248: 		    for (my $i=0;$i<$number_of_tables;$i++) {push @table_range,$max_val;}
        !           249: 		    if ($number_of_bubbles % $max_val != 0) {
        !           250: 			$number_of_tables++;
        !           251: 			push @table_range,($number_of_bubbles % $max_val);
        !           252: 		    }
        !           253: 		    my $j=0;
        !           254: 		    my $cou=0;
        !           255: 		    $result.='\vskip -1 mm \noindent \begin{enumerate}\item[\textbf{'.$Apache::lonxml::counter.'}.]';
        !           256: 		    for (my $i=0;$i<$number_of_tables;$i++) {
        !           257: 			$result.='\vskip -1 mm \noindent \begin{tabular}{';
        !           258: 			for ($ind=0;$ind<$table_range[$j];$ind++) {
        !           259: 			    $result.='lp{'.$celllength.' mm}';
        !           260: 			}
        !           261: 			$result.='}';
        !           262: 			for ($ind=$cou;$ind<$cou+$table_range[$j];$ind++) {
        !           263: 			    my $ans;
        !           264: 			    if ($formats[0] ne '') {
        !           265: 				$ans = sprintf('%.'.$formats[0],$bubbles_values[$ind]);
        !           266: 				if ($ans =~ m/([0-9\.\-\+]+)E([0-9\-\+]+)/ ) {
        !           267: 				    my $number = $1;
        !           268: 				    my $power = $2;
        !           269: 				    $power=~s/^\+//;
        !           270: 				    $power=~s/^(-?)0+(\d+)//;
        !           271: 				    $ans=$number.'$\times 10^{'.$1.$2.'}$'; #'stupidemacs
        !           272: 				}
        !           273: 			    } else {
        !           274: 				my $badans = $bubbles_values[$ind];
        !           275: 				my $format = '';
        !           276: 				#What is the number? (integer,decimal,floating point)
        !           277: 				if ($badans=~/^(\d*\.?\d*)(E|e)(\d*)$/) {
        !           278: 				    $format = 'e'.$2;
        !           279: 				} elsif ($badans=~/^(\d*)\.(\d*)$/) {
        !           280: 				    $format = '4f';
        !           281: 				} elsif ($badans=~/^(\d*)$/) {
        !           282: 				    $format = 'd';
        !           283: 				}
        !           284: 				$ans = sprintf('%.'.$format,$bubbles_values[$ind]);			
        !           285: 				if ($ans =~ m/([0-9\.\-\+]+)E([0-9\-\+]+)/ ) {
        !           286: 				    my $number = $1;
        !           287: 				    my $power = $2;
        !           288: 				    $power=~s/^\+//;
        !           289: 				    $power=~s/^(-?)0+(\d+)//;
        !           290: 				    $ans=$number.'$\times 10^{'.$1.$2.'}$'; #'stupidemacs
        !           291: 				}
        !           292: 			    }
        !           293: 			    $result.='\hskip -3 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -2 mm & {\small '.$ans.'} ';
        !           294: 			    if ($ind != $cou+$table_range[$j]-1) {$result.=' & ';}
        !           295: 			}
        !           296: 			$cou += $table_range[$j];
        !           297: 			$j++;
        !           298: 			$result.='\\\\\end{tabular}\vskip 0 mm ';
        !           299: 		    }
        !           300: 		    $result.='\end{enumerate}';
        !           301: 		    &Apache::lonxml::increment_counter();
        !           302: 		} else {
        !           303: 		    $result.='\fbox{\fbox{\parbox{\textwidth-5mm}{\strut\\\\\strut\\\\\strut\\\\\strut\\\\}}}';
        !           304: 		    my $id = $Apache::inputtags::part;
        !           305: 		    my $weight = &Apache::lonnet::EXT("resource.$id.weight");
        !           306: 		    my $repetition = int $weight/9;
        !           307: 		    if ($weight % 9 != 0) {$repetition++;}
        !           308: 		    $result.='\begin{enumerate}';
        !           309: 		    for (my $i=0;$i<$repetition;$i++) {
        !           310: 			$result.='\item[\textbf{'.$Apache::lonxml::counter.'}.]\textit{Leave blank on scoring form}\vskip 0 mm';
        !           311: 			&Apache::lonxml::increment_counter();
        !           312: 		    }
        !           313: 		    $result.= '\end{enumerate}';
        !           314: 		}
        !           315: 	    }
        !           316: 	}
        !           317:     } elsif ($target eq 'edit') {
        !           318: 	$result.='</td></tr>'.&Apache::edit::end_table;
        !           319:     } elsif ($target eq 'answer' || $target eq 'analyze') {
1.58      sakharuk  320: 	
1.89    ! albertel  321: 	my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
        !           322: 	if ($target eq 'analyze') {
        !           323: 	    push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
        !           324: 	    $Apache::lonhomework::analyze{"$part_id.type"} = $$tagstack[-1];
        !           325: 	}
        !           326: 	&Apache::response::setup_params($$tagstack[-1]);
        !           327: 	my (@answers)=&Apache::lonxml::get_param_var('answer',$parstack,$safeeval);
1.58      sakharuk  328: 	my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,$safeeval);
                    329: 	my $unit=&Apache::lonxml::get_param_var('unit',$parstack,$safeeval);
1.89    ! albertel  330: 	my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval);
        !           331: 	
        !           332: 	if ($target eq 'answer') {
        !           333: 	    $result.=&Apache::response::answer_header($$tagstack[-1]);
        !           334: 	}
        !           335: 	for(my $i=0;$i<=$#answers;$i++) {
        !           336: 	    my $ans=$answers[$i];
        !           337: 	    my $fmt;
        !           338: 	    if (@formats) {
        !           339: 		if ($#formats) {
        !           340: 		    $fmt=$formats[$i];
1.60      sakharuk  341: 		} else {
1.89    ! albertel  342: 		    $fmt=$formats[0];
        !           343: 		}
        !           344: 	    }
        !           345: 	    my ($high,$low);
        !           346: 	    if ($Apache::inputtags::params{'tol'}) {
        !           347: 		($high,$low)=&get_tolrange($ans,$Apache::inputtags::params{'tol'});
        !           348: 	    }
        !           349: 	    my ($sighigh,$siglow);
        !           350: 	    if ($Apache::inputtags::params{'sig'}) {
        !           351: 		($sighigh,$siglow)=&get_sigrange($Apache::inputtags::params{'sig'});
        !           352: 	    }
        !           353: 	    if ($fmt) {
        !           354: 		$ans = sprintf('%.'.$fmt,$ans);
        !           355: 		if ($high) {
        !           356: 		    $high = sprintf('%.'.$fmt,$high); $low = sprintf('%.'.$fmt,$low);
1.62      sakharuk  357: 		}
1.60      sakharuk  358: 	    }
1.89    ! albertel  359: 	    if ($target eq 'answer') {
        !           360: 		if ($high) { $ans.=' ['.$low.','.$high.']'; }
        !           361: 		if ($sighigh) { $ans.= " Sig <i>$siglow - $sighigh</i>"; }
        !           362: 		$result.=&Apache::response::answer_part($$tagstack[-1],$ans);
        !           363: 	    } elsif ($target eq 'analyze') {
        !           364: 		push (@{ $Apache::lonhomework::analyze{"$part_id.answer"} }, $ans);
        !           365: 		if ($high) {
        !           366: 		    push (@{ $Apache::lonhomework::analyze{"$part_id.ans_high"} }, $high);
        !           367: 		    push (@{ $Apache::lonhomework::analyze{"$part_id.ans_low"} }, $low);
1.58      sakharuk  368: 		}
1.79      sakharuk  369: 	    }
1.36      albertel  370: 	}
1.89    ! albertel  371: 	if ($unit) {
        !           372: 	    if ($target eq 'answer') {
        !           373: 		$result.=&Apache::response::answer_part($$tagstack[-1],
        !           374: 							"Unit: <b>$unit</b>");
        !           375: 	    } elsif ($target eq 'analyze') {
        !           376: 		push (@{ $Apache::lonhomework::analyze{"$part_id.unit"} },
        !           377: 		      $unit);
        !           378: 	    }
        !           379: 	}
        !           380: 	if ($type || $token->[1] eq 'stringresponse') {
        !           381: 	    my $string='Case Insensitive';
        !           382: 	    if ($type eq 'mc') {
        !           383: 		$string='Multiple Choice';
        !           384: 	    } elsif ($type eq 'cs') {
        !           385: 		$string='Case Sensitive';
        !           386: 	    } elsif ($type eq 'ci') {
        !           387: 		$string='Case Insensitive';
        !           388: 	    } elsif ($type eq 'fml') {
        !           389: 		$string='Formula';
        !           390: 	    }
        !           391: 	    if ($target eq 'answer') {
        !           392: 		$result.=&Apache::response::answer_part($$tagstack[-1],
        !           393: 							'<b>'.$string.'</b>');
        !           394: 	    } elsif ($target eq 'analyze') {
        !           395: 		push (@{ $Apache::lonhomework::analyze{"$part_id.type"} },
        !           396: 		      $type);
        !           397: 	    }
        !           398: 	}
        !           399: 	if ($$tagstack[-1] eq 'formularesponse' && $target eq 'answer') {
        !           400: 	    my $samples=&Apache::lonxml::get_param('samples',$parstack,$safeeval);
        !           401: 	    $result.=&Apache::response::answer_part($$tagstack[-1],$samples);
        !           402: 	}
        !           403: 	if ($target eq 'answer') {
        !           404: 	    $result.=&Apache::response::answer_footer($$tagstack[-1]);
        !           405: 	}
1.69      sakharuk  406:     }
1.89    ! albertel  407:     &Apache::response::end_response;
        !           408:     return $result;
1.51      albertel  409: }
                    410: 
                    411: sub get_tolrange {
1.89    ! albertel  412:     my ($ans,$tol)=@_;
        !           413:     my ($high,$low);
        !           414:     if ($tol =~ /%$/) {
        !           415: 	chop($tol);
        !           416: 	my $change=$ans*($tol/100.0);
        !           417: 	$high=$ans+$change;
        !           418: 	$low=$ans-$change;
        !           419:     } else {
        !           420: 	$high=$ans+$tol;
        !           421: 	$low=$ans-$tol;
        !           422:     }
        !           423:     return ($high,$low);
1.52      albertel  424: }
                    425: 
                    426: sub get_sigrange {
1.89    ! albertel  427:     my ($sig)=@_;
        !           428:     &Apache::lonxml::debug("Got a sig of :$sig:");
        !           429:     my $sig_lbound;
        !           430:     my $sig_ubound;
        !           431:     if ($sig eq '') {
        !           432: 	$sig_lbound = 0; #SIG_LB_DEFAULT
        !           433: 	$sig_ubound =15; #SIG_UB_DEFAULT
        !           434:     } else {
        !           435: 	($sig_lbound,$sig_ubound) = split(/,/,$sig);
        !           436: 	if (!$sig_lbound) {
        !           437: 	    $sig_lbound = 0; #SIG_LB_DEFAULT
        !           438: 	    $sig_ubound =15; #SIG_UB_DEFAULT
        !           439: 	}
        !           440: 	if (!$sig_ubound) { $sig_ubound=$sig_lbound; }
1.52      albertel  441:     }
1.89    ! albertel  442:     return ($sig_ubound,$sig_lbound);
1.34      albertel  443: }
                    444: 
                    445: sub start_stringresponse {
1.89    ! albertel  446:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !           447:     my $result;
        !           448:     if ($target eq 'meta') {
        !           449: 	$result=&Apache::response::meta_package_write('stringresponse');
        !           450:     } else {
        !           451: 	$result.=&start_numericalresponse(@_);
        !           452:     }
        !           453:     return $result;
1.34      albertel  454: }
                    455: 
                    456: sub end_stringresponse {
1.89    ! albertel  457:     return end_numericalresponse(@_);
1.44      albertel  458: }
                    459: 
                    460: sub start_formularesponse {
1.89    ! albertel  461:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !           462:     my $result;
        !           463:     if ($target eq 'meta') {
        !           464: 	$result=&Apache::response::meta_package_write('formularesponse');
        !           465:     } else {
        !           466: 	$result.=&start_numericalresponse(@_);
        !           467:     }
        !           468:     return $result;
1.44      albertel  469: }
                    470: 
                    471: sub end_formularesponse {
1.89    ! albertel  472:     return end_numericalresponse(@_);
1.3       albertel  473: }
                    474: 
1.1       albertel  475: 1;
1.3       albertel  476: __END__
1.89    ! albertel  477: 

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