loncom/homework/structuretags.pm - diff

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Diff for /loncom/homework/structuretags.pm between versions 1.295 and 1.398

version 1.295, 2005/06/28 19:17:36	version 1.398, 2007/09/12 07:59:51
Line 36 use Apache::File();	Line 36 use Apache::File();
use Apache::lonmenu;	use Apache::lonmenu;
use Apache::lonlocal;	use Apache::lonlocal;
use Apache::lonxml;	use Apache::lonxml;
	use Apache::lonenc();
use Time::HiRes qw( gettimeofday tv_interval );	use Time::HiRes qw( gettimeofday tv_interval );
	use lib '/home/httpd/lib/perl/';
	use LONCAPA;

BEGIN {	BEGIN {
&Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startouttext','endouttext','simpleeditbutton','definetag'));	&Apache::lonxml::register('Apache::structuretags',('block','languageblock','translated','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','problemtype','startouttext','endouttext','simpleeditbutton','definetag'));
}	}

sub start_web {	sub start_web {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $bodytext=&Apache::lonxml::get_all_text("/web",$parser);	if ($target ne 'edit' && $target ne 'modified') {
if ($target eq 'web') {	my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style);
return $bodytext;	if ($target eq 'web' \|\| $target eq 'webgrade') {
	return $bodytext;
	}
	} elsif ($target eq "edit" ) {
	my $bodytext =
	&Apache::lonxml::get_all_text_unbalanced("/web",$parser);
	my $result = &Apache::edit::tag_start($target,$token);
	$result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
	return $result;
	} elsif ( $target eq "modified" ) {
	return $token->[4].&Apache::edit::modifiedfield("/web",$parser);
}	}
return '';	return '';
}	}
Line 55 sub end_web {	Line 69 sub end_web {
}	}

sub start_tex {	sub start_tex {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';	my $result='';
my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser);	if ($target ne 'edit' && $target ne 'modified') {
if ($target eq 'tex') {	my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style);
return $bodytext.' ';	if ($target eq 'tex') {
	return $bodytext.' ';
	}
	} elsif ($target eq "edit" ) {
	my $bodytext =
	&Apache::lonxml::get_all_text_unbalanced("/tex",$parser);
	my $result = &Apache::edit::tag_start($target,$token);
	$result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
	return $result;
	} elsif ( $target eq "modified" ) {
	return $token->[4].&Apache::edit::modifiedfield("/tex",$parser);
}	}
return $result;;	return $result;;
}	}
Line 68 sub end_tex {	Line 92 sub end_tex {
return '';	return '';
}	}

sub body_tag_start {
my ($target,$background,$bgcolor)=@_;
my $body_tag_start='<body onload="'.&Apache::lonmenu::loadevents().'" '.
'onunload="'.&Apache::lonmenu::unloadevents().'" ';
if ($env{'browser.imagesuppress'} eq 'on') { $background=''; }
if ($background) {
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
$background;
$body_tag_start.='background="'.$background.'" ';
} else {
if (($bgcolor) && ($env{'browser.blackwhite'} ne 'on')) {
$body_tag_start.='bgcolor="'.$bgcolor.'" ';
} else {
$body_tag_start.='bgcolor="#ffffff"';
}
}
if ($env{'browser.fontenhance'} eq 'on') {
$body_tag_start.=' style="font-size: x-large;" ';
}
$body_tag_start.='>'.&Apache::lonmenu::menubuttons(undef,$target,1);
if ($env{'environment.texengine'} eq 'jsMath') {
$body_tag_start.='<script type="text/javascript">
function NoFontMessage () {}
</script>'."\n".
'<script src="/adm/jsMath/jsMath.js"></script>'."\n";
}
return $body_tag_start;
}

sub page_start {	sub page_start {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
	$extra_head)=@_;
my %found;	my %found;
foreach my $taginside (@$tagstack) {	foreach my $taginside (@$tagstack) {
foreach my $taglookedfor ('html','body','form') {	foreach my $taglookedfor ('html','body','form') {
Line 106 sub page_start {	Line 102 sub page_start {
}	}
}	}

my $result;	if ($target eq 'tex') {
my $head_tag_start;	return
if (!defined($found{'html'})) {	&Apache::londefdef::start_html($target,$token,$tagstack,
$result=&Apache::londefdef::start_html($target,$token,$tagstack,	$parstack,$parser,$safeeval);
$parstack,$parser,$safeeval);	}
$head_tag_start='<head>'.&Apache::lonmenu::registerurl(undef,$target).
&Apache::lonhtmlcommon::htmlareaheaders().	$extra_head.= '
&Apache::lonhtmlcommon::spellheader().	<script type="text/javascript">
&Apache::lonxml::fontsettings();	function setSubmittedPart (part) {
}	this.document.lonhomework.submitted.value="part_"+part;
my $body_tag_start;	}
if (!defined($found{'body'}) && $env{'request.state'} eq 'construct'	</script>
&& $env{'environment.remote'} eq 'off') {	';
$body_tag_start=&Apache::loncommon::bodytag();
$body_tag_start.=&Apache::lonxml::message_location();	my %body_args;
	if (defined($found{'html'})) {
	$body_args{'skip_phases'}{'head'}=1;
	} else {

	$extra_head .= &Apache::lonhtmlcommon::spellheader();

	$extra_head .= &Apache::londefdef::generate_css_links();

	if ($env{'request.state'} eq 'construct') {
	$extra_head.=&Apache::edit::js_change_detection().
	"<script type=\"text/javascript\">\n".
	"if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
	&Apache::loncommon::browser_and_searcher_javascript().
	"\n</script>\n";
	}
	}

	if (defined($found{'body'})) {
	$body_args{'skip_phases'}{'body'}=1;
	} elsif (!defined($found{'body'})
	&& $env{'request.state'} eq 'construct') {
	if ($target eq 'web' \|\| $target eq 'edit') {
	# no extra args to bodytag
	}
} elsif (!defined($found{'body'})) {	} elsif (!defined($found{'body'})) {
	my %add_entries;
my $background=&Apache::lonxml::get_param('background',$parstack,	my $background=&Apache::lonxml::get_param('background',$parstack,
$safeeval);	$safeeval);
	if ($background ne '' ) {
	$add_entries{'background'} = $background;
	}

my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,	my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
$safeeval);	$safeeval);
$body_tag_start=&body_tag_start($background,$bgcolor);	if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
if ( ($target eq 'web' \|\| $target eq 'webgrade')
&& $env{'request.state'} ne 'construct') {	$body_args{'bgcolor'} = $bgcolor;
my ($symb,undef,undef,undef,$publicuser)=	$body_args{'no_title'} = 1;
&Apache::lonxml::whichuser();	$body_args{'force_register'} = 1;
if ($symb eq '' && !$publicuser) {	$body_args{'add_entries'} = \%add_entries;
my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");	if ($env{'environment.remote'} eq 'off'
$help=&mt("Browsing resource, all submissions are temporary.")."<br />";	&& $env{'request.state'} eq 'construct') {
$body_tag_start.=$help;	$body_args{'only_body'} = 1;
}	}
	}
	$body_args{'no_auto_mt_title'} = 1;
	my $page_start = &Apache::loncommon::start_page($name,$extra_head,
	\%body_args);

	if (!defined($found{'body'})
	&& $env{'request.state'} ne 'construct'
	&& ($target eq 'web' \|\| $target eq 'webgrade')) {

	my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
	if ($symb eq '' && !$publicuser) {
	my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
	$help=&mt("Browsing resource, all submissions are temporary.")."<br />";
	$page_start .= $help;
}	}
$body_tag_start.=&Apache::lonxml::message_location();
}	}

	if (!defined($found{'body'})) {
	$page_start .= &Apache::lonxml::message_location();
	}

my $form_tag_start;	my $form_tag_start;
if (!defined($found{'form'})) {	if (!defined($found{'form'})) {
$form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="POST" action="';	$form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
my $uri=$env{'request.uri'};	my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }	$form_tag_start.=$uri.'" ';
$form_tag_start.=$uri.'">';	if ($target eq 'edit') {
	$form_tag_start.=&Apache::edit::form_change_detection();
	}
	$form_tag_start.='>'."\n";

	my $symb=&Apache::lonnet::symbread();
	if ($symb =~ /\S/) {
	$symb=
	&HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
	$form_tag_start.=
	"\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
	}
}	}
return ($result,$head_tag_start,$body_tag_start,$form_tag_start);	return ($page_start,$form_tag_start);
}	}

#use Time::HiRes();	#use Time::HiRes();
sub get_resource_name {	sub get_resource_name {
my ($parstack,$safeeval)=@_;	my ($parstack,$safeeval)=@_;
	my $name;
if (defined($Apache::lonhomework::name)) {	if (defined($Apache::lonhomework::name)) {
return $Apache::lonhomework::name;	$name = $Apache::lonhomework::name;
}	} else {
my ($symb)=&Apache::lonxml::whichuser();	my ($symb)=&Apache::lonnet::whichuser();
my $name=&Apache::lonnet::gettitle($symb);	$name=&Apache::lonnet::gettitle($symb);
if ($name eq '') {	if ($name eq '') {
$name=&Apache::lonnet::EXT('resource.title');	$name=&Apache::lonnet::EXT('resource.title');
if ($name eq 'con_lost') { $name = ''; }	if ($name eq 'con_lost') { $name = ''; }
}	}
if ($name!~/\S+/) {	if ($name!~/\S+/) {
$name=$env{'request.uri'};	$name=$env{'request.uri'};
$name=~s-.*/([^/]+)$-$1-;	$name=~s-.*/([^/]+)$-$1-;
	}
	# The name has had html tags escaped:

	$name=~s/</</gs;
	$name=~s/>/>/gs;

	$Apache::lonhomework::name=$name;
}	}
$Apache::lonhomework::name=$name;
return $name;	return $name;
}	}

sub setup_rndseed {	sub setup_rndseed {
my ($safeeval)=@_;	my ($safeeval)=@_;
my $rndseed;	my $rndseed;
my ($symb)=&Apache::lonxml::whichuser();	my ($symb)=&Apache::lonnet::whichuser();
if ($env{'request.state'} eq "construct" \|\| $symb eq '' \|\|	if ($env{'request.state'} eq "construct"
$Apache::lonhomework::history{'resource.CODE'}) {	\|\| $symb eq ''
	\|\| $Apache::lonhomework::type eq 'practice'
	\|\| $Apache::lonhomework::history{'resource.CODE'}) {
	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
	['rndseed']);
$rndseed=$env{'form.rndseed'};	$rndseed=$env{'form.rndseed'};
if (!$rndseed) {	if (!$rndseed) {
$rndseed=$Apache::lonhomework::history{'rndseed'};	$rndseed=$Apache::lonhomework::history{'rndseed'};
Line 183 sub setup_rndseed {	Line 248 sub setup_rndseed {
}	}
$env{'form.rndseed'}=$rndseed;	$env{'form.rndseed'}=$rndseed;
}	}
if ($env{'form.resetdata'} eq &mt('New Problem Variation') \|\|	if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
	&& $env{'form.submitted'} eq 'yes') \|\|
$env{'form.newrandomization'} eq &mt('New Randomization')) {	$env{'form.newrandomization'} eq &mt('New Randomization')) {
srand(time);	srand(time);
$rndseed=int(rand(2100000000));	$rndseed=int(rand(2100000000));
Line 192 sub setup_rndseed {	Line 258 sub setup_rndseed {
delete($env{'form.newrandomization'});	delete($env{'form.newrandomization'});
}	}
if (defined($rndseed) && $rndseed ne int($rndseed)) {	if (defined($rndseed) && $rndseed ne int($rndseed)) {
$rndseed=join(',',&Math::Random::random_seed_from_phrase($rndseed));	$rndseed=join(':',&Apache::lonnet::digest($rndseed));
}	}
if ($Apache::lonhomework::history{'resource.CODE'}) {	if ($Apache::lonhomework::history{'resource.CODE'}) {
$rndseed=&Apache::lonnet::rndseed();	$rndseed=&Apache::lonnet::rndseed();
Line 217 sub problem_edit_header {	Line 283 sub problem_edit_header {
&Apache::structuretags::remember_problem_state().'	&Apache::structuretags::remember_problem_state().'
<input type="hidden" name="problemmode" value="'.&mt('Edit').'" />	<input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
<input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />	<input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />	<input '.&Apache::edit::submit_ask_anyway().' type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
<input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />	<input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
<input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />	<input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
<input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.	<input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
&Apache::loncommon::help_open_menu('','Problem Editing Help','Problem_Editor_XML_Index','',5,'Authoring',undef,undef,undef,'Problem Editing Help')	&Apache::loncommon::help_open_menu('Problem Editing Help','Problem_Editor_XML_Index',5,'Authoring',undef,undef,undef,'Problem Editing Help')
.'</td></tr></table>'.	.'</td></tr></table>'.
'<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';	'<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
}	}
Line 229 sub problem_edit_header {	Line 295 sub problem_edit_header {
sub problem_edit_footer {	sub problem_edit_footer {
return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />	return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
<input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.	<input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
&Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields).	&Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields()).
"\n</form>\n".&Apache::loncommon::endbodytag()."\n</html>";	"\n</form>\n".&Apache::loncommon::end_page();
}	}

sub option {	sub option {
Line 245 sub option {	Line 311 sub option {

sub problem_web_to_edit_header {	sub problem_web_to_edit_header {
my ($rndseed)=@_;	my ($rndseed)=@_;
my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />	my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />	$result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />	$result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
<input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />	<input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
<input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />	<input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
<nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />	<nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
<input type="text" name="rndseed" size="10" value="'.	<input type="text" name="rndseed" size="10" value="'.
$rndseed.'"	$rndseed.'"
onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>	onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
<label><input type="checkbox" name="showallfoils" ';	<span class="LC_nobreak"><label><input type="checkbox" name="showallfoils" ';
	my $show_all_foils_text =
	($Apache::lonhomework::parsing_a_task) ?
	&mt(' Show All Instances')
	: &mt(' Show All Foils');

if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }	if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
$result.= ' />'.&mt(' Show All Foils').	$result.= ' />'.$show_all_foils_text.'</label></span>'.
&Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').	&Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
'</label><hr />';	'<hr />';
$result.="	$result.=&mt('Apply style file: ').'
	<input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
	<a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
	<input type="submit" name="clear_style_file" value="'.&mt('Clear').'" />
	<br />';

	if (!$Apache::lonhomework::parsing_a_task) {
	$result.="
<nobr>	<nobr>
Problem Status:	Problem Status:
<select name='problemstate'>	<select name='problemstate'>
Line 290 Feedback Mode:	Line 368 Feedback Mode:
</nobr>	</nobr>
<input type='submit' name='changeproblemmode' value='".&mt("Change")."' />	<input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
<hr />";	<hr />";
my $numtoanalyze=$env{'form.numtoanalyze'};	my $numtoanalyze=$env{'form.numtoanalyze'};
if (!$numtoanalyze) { $numtoanalyze=20; }	if (!$numtoanalyze) { $numtoanalyze=20; }
$result.= '<input type="submit" name="problemmode" value='.	$result.= '<input type="submit" name="problemmode" value='.
&mt('"Calculate answers').'" /> for	&mt('"Calculate answers').'" /> for
<input type="text" name="numtoanalyze" value="'.	<input type="text" name="numtoanalyze" value="'.
$numtoanalyze.'" size="5" /> '.&mt('versions of this problem').	$numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
'.'.&Apache::loncommon::help_open_topic("Analyze_Problem",	'.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
'',undef,undef,300).	'',undef,undef,300).
'<hr />';	'<hr />';
	} elsif ($Apache::lonhomework::parsing_a_task) {
	$result.="
	<nobr>
	Problem Status:
	<select name='problemstate'>
	<option value=''></option>
	".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
	".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
	".&option('WEB_GRADE' ,'problemstate').&mt("Criteria Grading")."</option>
	".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Feedback")."</option>
	</select>
	</nobr>
	<input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
	<hr />";
	}
return $result;	return $result;
}	}

sub initialize_storage {	sub initialize_storage {
%Apache::lonhomework::results=();	my ($given_symb) = @_;
%Apache::lonhomework::history=();	undef(%Apache::lonhomework::results);
my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();	undef(%Apache::lonhomework::history);
if ($env{'request.state'} eq 'construct' \|\| $symb eq '') {	my ($symb,$courseid,$domain,$name) =
	&Apache::lonnet::whichuser($given_symb);

	# anonymous users (CODEd exams) have no data
	if ($name eq 'anonymous'
	&& !defined($domain)) {
	return;
	}

	if ($env{'request.state'} eq 'construct'
	\|\| $symb eq ''
	\|\| $Apache::lonhomework::type eq 'practice') {

	my $namespace = $symb \|\| $env{'request.uri'};
	if ($env{'form.resetdata'} eq &mt('Reset Submissions') \|\|
	($env{'form.resetdata'} eq &mt('New Problem Variation')
	&& $env{'form.submitted'} eq 'yes') \|\|
	$env{'form.newrandomization'} eq &mt('New Randomization')) {
	&Apache::lonnet::tmpreset($namespace,'',$domain,$name);
	&Apache::lonxml::debug("Attempt reset");
	}
%Apache::lonhomework::history=	%Apache::lonhomework::history=
&Apache::lonnet::tmprestore($env{'request.uri'},'',$domain,$name);	&Apache::lonnet::tmprestore($namespace,'',$domain,$name);
my ($temp)=keys %Apache::lonhomework::history ;	my ($temp)=keys %Apache::lonhomework::history ;
&Apache::lonxml::debug("Return message of $temp");	&Apache::lonxml::debug("Return message of $temp");
} else {	} else {
%Apache::lonhomework::history=	%Apache::lonhomework::history=
&Apache::lonnet::restore($symb,$courseid,$domain,$name);	&Apache::lonnet::restore($symb,$courseid,$domain,$name);
}	}

#ignore error conditions	#ignore error conditions
my ($temp)=keys %Apache::lonhomework::history ;	my ($temp)=keys %Apache::lonhomework::history ;
if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }	if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
Line 327 sub initialize_storage {	Line 441 sub initialize_storage {
# Will increment totals for attempts, students, and corrects	# Will increment totals for attempts, students, and corrects
# if running user has student role.	# if running user has student role.
sub finalize_storage {	sub finalize_storage {
	my ($given_symb) = @_;
my $result;	my $result;
if (%Apache::lonhomework::results) {	if (%Apache::lonhomework::results) {
my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();	my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
if ($env{'request.state'} eq 'construct' \|\| $symb eq '') {	delete(@Apache::lonhomework::results{@remove});
	my ($symb,$courseid,$domain,$name) =
	&Apache::lonnet::whichuser($given_symb);
	if ($env{'request.state'} eq 'construct'
	\|\| $symb eq ''
	\|\| $Apache::lonhomework::type eq 'practice') {
	my $namespace = $symb \|\| $env{'request.uri'};
$Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};	$Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
$result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,	$result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
$env{'request.uri'},'',$domain,$name);	$namespace,'',$domain,$name);
&Apache::lonxml::debug('Construct Store return message:'.$result);	&Apache::lonxml::debug('Construct Store return message:'.$result);
} else {	} else {
$result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,	$result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
Line 343 sub finalize_storage {	Line 464 sub finalize_storage {
&store_aggregates($symb,$courseid);	&store_aggregates($symb,$courseid);
}	}
}	}
	} else {
	&Apache::lonxml::debug('Nothing to store');
}	}
return $result;	return $result;
}	}
use Data::Dumper;

# -------------------------------------------------------------store_aggregates	# -------------------------------------------------------------store_aggregates
# Sends hash of values to be incremented in nohist_resourcetracker.db	# Sends hash of values to be incremented in nohist_resourcetracker.db
Line 395 sub checkout_msg {	Line 517 sub checkout_msg {
'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',	'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
'checkout'=>'Check out Exam for Viewing',	'checkout'=>'Check out Exam for Viewing',
'checkout?'=>'Check out Exam?');	'checkout?'=>'Check out Exam?');
	my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
return (<<ENDCHECKOUT);	return (<<ENDCHECKOUT);
<h2>$lt{'resource'}</h2>	<h2>$lt{'resource'}</h2>
<p>$lt{'id_expln'}</p>	<p>$lt{'id_expln'}</p>
<font color="red">	<font color="red">
<p>$lt{'warning'}</p>	<p>$lt{'warning'}</p>
</font>	</font>
<form name="checkout" method="POST" action="$env{'request.uri'}">	<form name="checkout" method="POST" action="$uri">
<input type="hidden" name="doescheckout" value="yes" />	<input type="hidden" name="doescheckout" value="yes" />
<input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />	<input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
</form>	</form>
Line 413 sub firstaccess_msg {	Line 536 sub firstaccess_msg {
my ($map)=&Apache::lonnet::decode_symb($symb);	my ($map)=&Apache::lonnet::decode_symb($symb);
my $foldertitle=&Apache::lonnet::gettitle($map);	my $foldertitle=&Apache::lonnet::gettitle($map);
&Apache::lonxml::debug("map is $map title is $foldertitle");	&Apache::lonxml::debug("map is $map title is $foldertitle");
	my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
return (<<ENDCHECKOUT);	return (<<ENDCHECKOUT);
<h2>The resources in "$foldertitle" are open for a limited time. Once you click the 'Show Resource' button below you have $time to complete all resources "$foldertitle".</h2>	<h2>The resources in "$foldertitle" are open for a limited time. Once you click the 'Show Resource' button below you have $time to complete all resources "$foldertitle".</h2>
<form name="markaccess" method="POST" action="$env{'request.uri'}">	<form name="markaccess" method="POST" action="$uri">
<input type="hidden" name="markaccess" value="yes" />	<input type="hidden" name="markaccess" value="yes" />
<input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />	<input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
</form>	</form>
Line 425 ENDCHECKOUT	Line 549 ENDCHECKOUT
sub init_problem_globals {	sub init_problem_globals {
my ($type)=@_;	my ($type)=@_;
#initialize globals	#initialize globals
	# For problems, we start out in part 0 (outside a <part> tag).
	# and part 0 is used to describe the main body of the <problem>
	#
if ($type eq 'problem') {	if ($type eq 'problem') {
$Apache::inputtags::part='0';	$Apache::inputtags::part='0';
@Apache::inputtags::partlist=('0');	@Apache::inputtags::partlist=('0');
$Apache::lonhomework::problemstatus=&get_problem_status('0');	$Apache::lonhomework::problemstatus=&get_problem_status('0');
$Apache::lonhomework::ignore_response_errors=0;	$Apache::lonhomework::ignore_response_errors=0;

} elsif ($type eq 'library') {	} elsif ($type eq 'library') {
$Apache::inputtags::part='';	$Apache::inputtags::part='';
@Apache::inputtags::partlist=();	@Apache::inputtags::partlist=();
$Apache::lonhomework::problemstatus='';	$Apache::lonhomework::problemstatus='';
$Apache::lonhomework::ignore_response_errors=1;	$Apache::lonhomework::ignore_response_errors=1;

	} elsif ($type eq 'Task') {
	$Apache::inputtags::part='0';
	@Apache::inputtags::partlist=('0');
	$Apache::lonhomework::problemstatus='';
	$Apache::lonhomework::ignore_response_errors=1;
}	}
@Apache::inputtags::responselist = ();	@Apache::inputtags::responselist = ();
@Apache::inputtags::importlist = ();	@Apache::inputtags::importlist = ();
Line 446 sub init_problem_globals {	Line 580 sub init_problem_globals {
@Apache::structuretags::whileline=();	@Apache::structuretags::whileline=();
$Apache::lonhomework::scantronmode=0;	$Apache::lonhomework::scantronmode=0;
undef($Apache::lonhomework::name);	undef($Apache::lonhomework::name);
	undef($Apache::lonhomework::default_type);
	undef($Apache::lonhomework::type);
}	}

sub reset_problem_globals {	sub reset_problem_globals {
Line 458 sub reset_problem_globals {	Line 593 sub reset_problem_globals {
#detect if we try to do 2 problems in one file	#detect if we try to do 2 problems in one file
# undef($Apache::lonhomework::parsing_a_problem);	# undef($Apache::lonhomework::parsing_a_problem);
undef($Apache::lonhomework::name);	undef($Apache::lonhomework::name);
	undef($Apache::lonhomework::default_type);
	undef($Apache::lonhomework::type);
	undef($Apache::lonhomework::scantronmode);
	undef($Apache::lonhomework::problemstatus);
	undef($Apache::lonhomework::ignore_response_errors);
}	}

sub set_problem_state {	sub set_problem_state {
Line 483 sub get_problem_status {	Line 623 sub get_problem_status {
}	}

sub start_problem {	sub start_problem {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;

	# We'll use the redirection to fix up printing of duedates.
	if (!$Apache::lonxml::metamode) {
	&Apache::lonxml::startredirection();
	}

	# Problems don't nest and we don't allow more than one <problem> in
	# a .problem file.
	#
if ( $Apache::inputtags::part ne '' \|\|	if ( $Apache::inputtags::part ne '' \|\|
$Apache::lonhomework::parsing_a_problem) {	$Apache::lonhomework::parsing_a_problem) {
&Apache::lonxml::error('Only one <problem> allowed in a .problem file');	&Apache::lonxml::error('Only one <problem> allowed in a .problem file');
#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);	#my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
return '';	return '';
}	}

Line 499 sub start_problem {	Line 647 sub start_problem {
$Apache::lonhomework::scantronmode=1;	$Apache::lonhomework::scantronmode=1;
}	}

&initialize_storage();
if ($target ne 'analyze') {	if ($target ne 'analyze') {
if ($target eq 'web') {
&Apache::lonhomework::showhash(%Apache::lonhomework::history);
}
if ($env{'request.state'} eq 'construct') { &set_problem_state('0'); }
$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');	$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
if (($env{'request.state'} eq 'construct') &&	if (($env{'request.state'} eq 'construct') &&
defined($env{'form.problemtype'})) {	defined($env{'form.problemtype'})) {
$Apache::lonhomework::type=$env{'form.problemtype'};	$Apache::lonhomework::type=$env{'form.problemtype'};
}	}
$Apache::lonhomework::default_type = $Apache::lonhomework::type;	&Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
&Apache::lonxml::debug("Found this to be of type :$Apache::ltonhomework::type:");
}	}
if ($Apache::lonhomework::type eq '' ) {	if ($Apache::lonhomework::type eq '' ) {
my $uri=$env{'request.uri'};	my $uri=$env{'request.uri'};
Line 523 sub start_problem {	Line 665 sub start_problem {
&Apache::lonxml::debug("Using default type, problem, :$uri:");	&Apache::lonxml::debug("Using default type, problem, :$uri:");
}	}
}	}
	$Apache::lonhomework::default_type = $Apache::lonhomework::type;

	&initialize_storage();
	if ($target ne 'analyze'
	&& $env{'request.state'} eq 'construct') {
	&set_problem_state('0');
	}

	if ($target eq 'web') {
	&Apache::lonxml::debug(" grading history ");
	&Apache::lonhomework::showhash(%Apache::lonhomework::history);
	}

#added vars to the scripting enviroment	#added vars to the scripting enviroment
my $expression='$external::part=\''.$Apache::inputtags::part.'\';';	my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
Line 531 sub start_problem {	Line 685 sub start_problem {
my $status;	my $status;
my $accessmsg;	my $accessmsg;

#should get back a <html> or the neccesary stuff to start XML/MathML	my $name= &get_resource_name($parstack,$safeeval);
my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=	my ($result,$form_tag_start);
&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);	if ($target eq 'web' \|\| $target eq 'webgrade' \|\| $target eq 'tex'
	\|\| $target eq 'edit') {
	($result,$form_tag_start) =
	&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
	$name);
	}

if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}	if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}

if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }	if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
Line 548 sub start_problem {	Line 708 sub start_problem {
$Apache::lonhomework::history{"resource.0.outtoken"}=	$Apache::lonhomework::history{"resource.0.outtoken"}=
$token;	$token;
}	}
$body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);	$result.=&Apache::lonxml::printtokenheader($target,$token);
}	}
if ($env{'form.markaccess'}) {	if ($env{'form.markaccess'}) {
&Apache::lonnet::set_first_access('map');	&Apache::lonnet::set_first_access('map');
}	}
#handle rand seed in construction space	#handle rand seed in construction space
my $rndseed=&setup_rndseed($safeeval);	my $rndseed=&setup_rndseed($safeeval);
my ($symb)=&Apache::lonxml::whichuser();	my ($symb)=&Apache::lonnet::whichuser();
if ($env{'request.state'} ne "construct" && $symb eq '') {	if ($env{'request.state'} ne "construct" &&
	($symb eq '' \|\| $Apache::lonhomework::type eq 'practice')) {
$form_tag_start.='<input type="hidden" name="rndseed" value="'.	$form_tag_start.='<input type="hidden" name="rndseed" value="'.
$rndseed.'" />'.	$rndseed.'" />'.
'<input type="submit" name="resetdata"	'<input type="submit" name="resetdata"
value="'.&mt('New Problem Variation').'" />'.	value="'.&mt('New Problem Variation').'" />';
	if (exists($env{'form.username'})) {
	$form_tag_start.=
'<input type="hidden" name="username"	'<input type="hidden" name="username"
value="'.$env{'form.username'}.'" />';	value="'.$env{'form.username'}.'" />';
if ($env{'user.adv'}) {	}
	if ($env{'request.role.adv'}) {
$form_tag_start.=	$form_tag_start.=
' <input type="checkbox" name="showallfoils" ';	' <label><input type="checkbox" name="showallfoils" ';
if (defined($env{'form.showallfoils'})) {	if (defined($env{'form.showallfoils'})) {
$form_tag_start.='checked="on"';	$form_tag_start.='checked="on"';
}	}
$form_tag_start.= ' />'.&mt(' Show All Foils');	$form_tag_start.= ' />'.&mt(' Show All Foils').
	'</label>';
}	}
$form_tag_start.='<hr />';	$form_tag_start.='<hr />';
}	}
($status,$accessmsg) = &Apache::lonhomework::check_access('0');
	($status,$accessmsg,my $slot_name,my $slot) =
	&Apache::lonhomework::check_slot_access('0','problem');
push (@Apache::inputtags::status,$status);	push (@Apache::inputtags::status,$status);

my $expression='$external::datestatus="'.$status.'";';	my $expression='$external::datestatus="'.$status.'";';
$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';	$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
&Apache::run::run($expression,$safeeval);	&Apache::run::run($expression,$safeeval);
&Apache::lonxml::debug("Got $status");	&Apache::lonxml::debug("Got $status");

if (( $status eq 'CLOSED' ) \|\|	if (( $status eq 'CLOSED' ) \|\|
( $status eq 'UNCHECKEDOUT') \|\|	( $status eq 'UNCHECKEDOUT') \|\|
( $status eq 'NOT_YET_VIEWED') \|\|	( $status eq 'NOT_YET_VIEWED') \|\|
( $status eq 'BANNED') \|\|	( $status eq 'BANNED') \|\|
( $status eq 'UNAVAILABLE') \|\|	( $status eq 'UNAVAILABLE') \|\|
	( $status eq 'NOT_IN_A_SLOT') \|\|
( $status eq 'INVALID_ACCESS')) {	( $status eq 'INVALID_ACCESS')) {
my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser);	my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
	$style);
if ( $target eq "web" ) {	if ( $target eq "web" ) {
$result.= $head_tag_start.'</head>';	my $msg;
my $msg=$body_tag_start;
if ($status eq 'UNAVAILABLE') {	if ($status eq 'UNAVAILABLE') {
$msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';	$msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
} elsif ($status ne 'NOT_YET_VIEWED') {	} elsif ($status ne 'NOT_YET_VIEWED') {
$msg.='<h1>'.&mt('Not open to be viewed').'</h1>';	$msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
}	}
if ($status eq 'CLOSED' \|\| $status eq 'INVALID_ACCESS') {	if ($status eq 'CLOSED' \|\| $status eq 'INVALID_ACCESS') {
$msg.='The problem '.$accessmsg;	$msg.=&mt('The problem ').$accessmsg;
} elsif ($status eq 'UNCHECKEDOUT') {	} elsif ($status eq 'UNCHECKEDOUT') {
$msg.=&checkout_msg;	$msg.=&checkout_msg();
} elsif ($status eq 'NOT_YET_VIEWED') {	} elsif ($status eq 'NOT_YET_VIEWED') {
$msg.=&firstaccess_msg($accessmsg,$symb);	$msg.=&firstaccess_msg($accessmsg,$symb);
	} elsif ($status eq 'NOT_IN_A_SLOT') {
	$msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work.");
}	}
$result.=$msg.'<br />';	$result.=$msg.'<br />';
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';	my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
	: '\begin{minipage}{\textwidth}';
	$result.='\begin{document}\noindent \vskip 1 mm '.
	$startminipage.'\vskip 0 mm';
if ($status eq 'UNAVAILABLE') {	if ($status eq 'UNAVAILABLE') {
$result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';	$result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
} else {	} else {
$result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";	$result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
}	}
}	}
	} elsif ($status eq 'NEEDS_CHECKIN') {
	my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
	$style);
	if ($target eq 'web') {
	$result .=
	&Apache::bridgetask::proctor_validation_screen($slot);
	} elsif ($target eq 'grade') {
	&Apache::bridgetask::proctor_check_auth($slot_name,$slot,
	'problem');
	}
} elsif ($target eq 'web') {	} elsif ($target eq 'web') {
my $name= &get_resource_name($parstack,$safeeval);	if ($status eq 'CAN_ANSWER'
$result.="$head_tag_start<title>$name</title></head>	&& $slot_name ne ''
$body_tag_start \n $form_tag_start".	&& $Apache::lonhomework::history{'resource.0.checkedin'} eq '') {
	# unproctored slot access, self checkin
	&Apache::bridgetask::check_in('problem',undef,undef,
	$slot_name);
	}
	$result.="\n $form_tag_start \t".
'<input type="hidden" name="submitted" value="yes" />';	'<input type="hidden" name="submitted" value="yes" />';
# create a page header and exit	# create a page header and exit
if ($env{'request.state'} eq "construct") {	if ($env{'request.state'} eq "construct") {
Line 627 sub start_problem {	Line 817 sub start_problem {
}	}
}	}
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $startminipage = '';	$result .= 'INSERTTEXFRONTMATTERHERE';
if (not $env{'form.problem_split'}=~/yes/) {
$startminipage = '\begin{minipage}{\textwidth}';
}
my $id = $Apache::inputtags::part;
my $weight = &Apache::lonnet::EXT("resource.$id.weight");
my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
my @packages = split /,/,$packages;
my $allow_print_points = 0;
foreach my $partial_key (@packages) {
if ($partial_key=~m/^part_0$/) {
$allow_print_points=1;
}
}
my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
my $duedate = &Apache::lonnet::EXT("resource.$id.duedate");
$duedate = POSIX::strftime("%c",localtime($duedate));
my $temp_file;
my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
if (-e $filename) {
$temp_file = Apache::File->new($filename);
} else {
$temp_file = Apache::File->new('>>'.$filename);
}
my @due_file_content = <$temp_file>;
my $due_file_content = $due_file_content[$#due_file_content];
chomp $due_file_content;
my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
if ($due_file_content ne $duedate) {
$temp_file = Apache::File->new('>'.$filename);
print $temp_file "$duedate\n";
if (not $env{'request.symb'} =~ m/\.page_/) {
if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
$result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$env{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent\textit{Due date: '.$duedate.'} \vskip 1 mm\noindent '.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
} else {
$result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$env{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm \noindent'.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
}
} else {
$result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\';
}
} else {
if (not $env{'request.symb'} =~ m/\.page_/) {
$result .= '\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$env{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent \vskip 1 mm\noindent'.$startminipage.'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
} else {
$result .= '\vskip 1mm \\\\\\\\';
}
}
}	}
} elsif ($target eq 'edit') {	} elsif ($target eq 'edit') {
$result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.	$result .= $form_tag_start.&problem_edit_header();
&problem_edit_header();
$Apache::lonxml::warnings_error_header=	$Apache::lonxml::warnings_error_header=
&mt("Editor Errors - these errors might not effect the running of the problem, but they will likely cause problems with further use of the Edit mode. Please use the EditXML mode to fix these errors.")."<br />";	&mt("Editor Errors - these errors might not effect the running of the problem, but they will likely cause problems with further use of the Edit mode. Please use the EditXML mode to fix these errors.")."<br />";
my $temp=&Apache::edit::insertlist($target,$token);	my $temp=&Apache::edit::insertlist($target,$token);
$result.=$temp;	$result.=$temp;
} elsif ($target eq 'modified') {	} elsif ($target eq 'modified') {
$result=$token->[4];	$result=$token->[4];
$result.=&Apache::edit::handle_insert();
} else {	} else {
# page_start returned a starting result, delete it if we don't need it	# page_start returned a starting result, delete it if we don't need it
$result = '';	$result = '';
Line 697 sub start_problem {	Line 837 sub start_problem {

sub end_problem {	sub end_problem {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result='';	my $result;

	if (!$Apache::lonxml::metamode) {
	$result = &Apache::lonxml::endredirection(); #started in &start_problem
	$Apache::lonxml::post_evaluate=0;
	}

	if ($target eq 'tex') {
	# Figure out the front matter and replace the
	# INSERTTEXFRONTMATTERHERE in result with it. note that we do
	# this in end_problem because whether or not we display due
	# dates depends on whether due dates have already been
	# displayed in the problem parts.

	my $frontmatter = '';
	my $startminipage = '';
	if (not $env{'form.problem_split'}=~/yes/) {
	$startminipage = '\begin{minipage}{\textwidth}';
	}
	my $id = $Apache::inputtags::part;
	my $weight = &Apache::lonnet::EXT("resource.$id.weight");
	my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
	my @packages = split /,/,$packages;
	my $allow_print_points = 0;
	foreach my $partial_key (@packages) {
	if ($partial_key=~m/^part_0$/) {
	$allow_print_points=1;
	}
	}
	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
	if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
	if (lc($env{'course.'.$env{'request.course.id'}.
	'.disableexampointprint'}) eq 'yes') {
	$allow_print_points=0;
	}
	my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
	my $begin_doc='\begin{document} \typeout{STAMPOFPASSEDRESOURCESTART Resource <h2>"'.$name_of_resourse.'"</h2> located in <br /><small><b>'.$env{'request.uri'}.'</b></small><br /> STAMPOFPASSEDRESOURCEEND} \noindent ';
	my $toc_line='\vskip 1 mm\noindent '.$startminipage.
	'\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';

	# Figure out what the due date is and if we need to print
	# it in the problem header. We have been logging the
	# last due date written to file.

	my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
	my $duedate = POSIX::strftime("%c",localtime($duetime));
	my $temp_file;
	my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";

	# Figure out what the last printed due date is or set it
	# to the epoch if no duedates have been printed.

	my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
	if (-e $filename) {
	$temp_file = Apache::File->new($filename);
	my @due_file = <$temp_file>;
	$due_file_content = $due_file[$#due_file];
	chomp $due_file_content;
	}

	# We display the due date iff it is not the same as the last
	# duedate in problem header ($due_file_content), and
	# none of our parts displayed a duedate.
	#
	my $parts_with_displayduedate;
	if (defined $Apache::outputtags::showonce{'displayduedate'}) {
	$parts_with_displayduedate =
	scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
	} else {
	$parts_with_displayduedate = 0;
	}
	if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
	$temp_file = Apache::File->new('>'.$filename);
	print $temp_file "$duetime\n";
	if (not $env{'request.symb'} =~ m/\.page_/) {
	if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
	$frontmatter .= $begin_doc.
	'\textit{Due date: '.$duedate.'} '.$toc_line;
	} else {
	$frontmatter.= $begin_doc.$toc_line;
	if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
	}
	} else {
	$frontmatter .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\'.$startminipage;
	}
	} else {
	if (not $env{'request.symb'} =~ m/\.page_/) {
	$frontmatter .= $begin_doc.$toc_line;
	if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
	} else {
	$frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
	}
	}
	$result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
	}

my $status=$Apache::inputtags::status['-1'];	my $status=$Apache::inputtags::status['-1'];
if ($target eq 'grade' \|\| $target eq 'web' \|\| $target eq 'answer' \|\|	if ($target eq 'grade' \|\| $target eq 'web' \|\| $target eq 'answer' \|\|
$target eq 'tex') {	$target eq 'tex') {
Line 705 sub end_problem {	Line 940 sub end_problem {
# if part is zero, no <part>s existed, so we need to the grading	# if part is zero, no <part>s existed, so we need to the grading
if ($status eq 'CAN_ANSWER' \|\|$Apache::lonhomework::scantronmode) {	if ($status eq 'CAN_ANSWER' \|\|$Apache::lonhomework::scantronmode) {
&Apache::inputtags::grade;	&Apache::inputtags::grade;
	} elsif ($status eq 'NEEDS_CHECKIN') {
	# no need to grade, and don't want to hide data
} else {	} else {
# move any submission data to .hidden	# move any submission data to .hidden
&Apache::inputtags::hidealldata($Apache::inputtags::part);	&Apache::inputtags::hidealldata($Apache::inputtags::part);
Line 724 sub end_problem {	Line 961 sub end_problem {
if ($target ne 'tex' &&	if ($target ne 'tex' &&
$env{'form.answer_output_mode'} ne 'tex') {	$env{'form.answer_output_mode'} ne 'tex') {
$result.="</form>";	$result.="</form>";
$result.=&Apache::lonhtmlcommon::htmlareaselectactive(@Apache::lonxml::htmlareafields);	$result.= &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields());
}	}
if ($target eq 'web') {	if ($target eq 'web') {
$result.=&Apache::lonxml::xmlend().'</html>';	$result.= &Apache::loncommon::end_page({'discussion' => 1});
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $endminipage = '';	my $endminipage = '';
if (not $env{'form.problem_split'}=~/yes/) {	if (not $env{'form.problem_split'}=~/yes/) {
Line 735 sub end_problem {	Line 972 sub end_problem {
}	}
if ($env{'form.print_discussions'} eq 'yes') {	if ($env{'form.print_discussions'} eq 'yes') {
$result.=&Apache::lonxml::xmlend($target,$parser);	$result.=&Apache::lonxml::xmlend($target,$parser);
$result=~s/<\/html>//;
} else {	} else {
$result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';	$result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
if (not $env{'request.symb'} =~ m/\.page_/) {	if (not $env{'request.symb'} =~ m/\.page_/) {
$result .= $endminipage.'\end{document} ';	$result .= $endminipage.'\end{document} ';
} else {	} else {
$result .= '';	$result .= $endminipage;
}	}
}	}
}	}
Line 752 sub end_problem {	Line 988 sub end_problem {
}	}
if ($target eq 'answer' && ($env{'request.state'} eq 'construct')	if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
&& $env{'form.answer_output_mode'} ne 'tex') {	&& $env{'form.answer_output_mode'} ne 'tex') {
$result.=&Apache::lonxml::xmlend().'</html>';	$result.=&Apache::loncommon::end_page({'discussion' => 1});
# normally we get it from above, but in CSTR	# normally we get it from above, but in CSTR
# we always show answer mode too.	# we always show answer mode too.
}	}
Line 765 sub end_problem {	Line 1001 sub end_problem {
$result.=&Apache::response::meta_response_order();	$result.=&Apache::response::meta_response_order();
} elsif ($target eq 'edit') {	} elsif ($target eq 'edit') {
&Apache::lonxml::debug("in end_problem with $target, edit");	&Apache::lonxml::debug("in end_problem with $target, edit");
$result = &problem_edit_footer();	$result .= &problem_edit_footer();
	} elsif ($target eq 'modified') {
	$result .= $token->[2];
}	}

if ($env{'request.state'} eq 'construct' && $target eq 'web') {	if ($env{'request.state'} eq 'construct' && $target eq 'web') {
Line 780 sub end_problem {	Line 1018 sub end_problem {

sub start_library {	sub start_library {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my ($result,$head_tag_start,$body_tag_start,$form_tag_start);	my ($result,$form_tag_start);
if ($$tagstack[0] eq 'library') {	if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
&init_problem_globals('library');	&init_problem_globals('library');
$Apache::lonhomework::type='problem';	$Apache::lonhomework::type='problem';
}	}
if ($target eq 'edit') {	if ($target eq 'edit') {
($result,$head_tag_start,$body_tag_start,$form_tag_start)=	($result,$form_tag_start)=
&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);	&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
$result.=$head_tag_start."</head>".$body_tag_start.$form_tag_start.	'Edit');
&problem_edit_header();	$result.=$form_tag_start.&problem_edit_header();
my $temp=&Apache::edit::insertlist($target,$token);	my $temp=&Apache::edit::insertlist($target,$token);
$result.=$temp;	$result.=$temp;
} elsif ($target eq 'modified') {	} elsif ($target eq 'modified') {
$result=$token->[4];	$result=$token->[4];
$result.=&Apache::edit::handle_insert();	} elsif (($target eq 'web' \|\| $target eq 'webgrade')
} elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&	&& ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
$env{'request.state'} eq "construct" ) {	&& $env{'request.state'} eq "construct" ) {
($result,$head_tag_start,$body_tag_start,$form_tag_start)=
&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
my $name=&get_resource_name($parstack,$safeeval);	my $name=&get_resource_name($parstack,$safeeval);
	($result,$form_tag_start)=
	&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
	$name);
my $rndseed=&setup_rndseed($safeeval);	my $rndseed=&setup_rndseed($safeeval);
$result.="$head_tag_start<title>$name</title></head>	$result.=" \n $form_tag_start".
$body_tag_start \n $form_tag_start".
'<input type="hidden" name="submitted" value="yes" />';	'<input type="hidden" name="submitted" value="yes" />';
$result.=&problem_web_to_edit_header($rndseed);	$result.=&problem_web_to_edit_header($rndseed);
}	}
Line 814 sub end_library {	Line 1052 sub end_library {
my $result='';	my $result='';
if ($target eq 'edit') {	if ($target eq 'edit') {
$result=&problem_edit_footer();	$result=&problem_edit_footer();
} elsif ($target eq 'web' && $$tagstack[0] ne 'problem' &&	} elsif ($target eq 'web'
$env{'request.state'} eq "construct") {	&& ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
$result.='</form>'.&Apache::loncommon::endbodytag().	&& $env{'request.state'} eq "construct") {
&Apache::lonxml::xmlend();	$result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
	}
	if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
	&reset_problem_globals('library');
}	}
if ($$tagstack[0] eq 'library') { &reset_problem_globals('library') };
return $result;	return $result;
}	}

sub start_definetag {	sub start_definetag {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;

my $result;	my $result;

my $name = $token->[2]->{'name'};	my $name = $token->[2]->{'name'};
my $skip=&Apache::lonxml::get_all_text("/definetag",$parser);	my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
if ($name=~/^\//) {	if ($target eq 'web') {
$result=	if ($name=~/^\//) {
'<br /><table bgcolor="#FFBBBB"><tr><th>END <tt>'.$name.'</tt></th></tr>';	$result=
} else {	'<br /><table class="LC_sty_end"><tr><th>'.
$result=	&mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
'<br /><table bgcolor="#BBFFBB"><tr><th>BEGIN <tt>'.$name.'</tt></th></tr>';	} else {
	$result=
	'<br /><table class="LC_sty_begin"><tr><th>'.
	&mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
	}
	$skip = &HTML::Entities::encode($skip, '<>&"');
	$result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
}	}
$skip=~s/\</\&lt\;/gs;
$skip=~s/\>/\&gt\;/gs;
$result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
return $result;	return $result;
}	}

Line 852 sub start_block {	Line 1095 sub start_block {

my $result;	my $result;

if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
$target eq 'tex' \|\| $target eq 'analyze') {	$target eq 'tex' \|\| $target eq 'analyze' \|\| $target eq 'webgrade') {
my $code = $token->[2]->{'condition'};	my $code = $token->[2]->{'condition'};
if (defined($code)) {	if (defined($code) && $code ne '') {
if (!$Apache::lonxml::default_homework_loaded) {	if (!$Apache::lonxml::default_homework_loaded) {
&Apache::lonxml::default_homework_load($safeeval);	&Apache::lonxml::default_homework_load($safeeval);
}	}
Line 896 sub start_languageblock {	Line 1139 sub start_languageblock {

my $result;	my $result;

if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
$target eq 'tex' \|\| $target eq 'analyze') {	$target eq 'tex' \|\| $target eq 'analyze' \|\| $target eq 'webgrade') {
my $include = $token->[2]->{'include'};	my $include = $token->[2]->{'include'};
my $exclude = $token->[2]->{'exclude'};	my $exclude = $token->[2]->{'exclude'};
my %languages=&Apache::loncommon::display_languages();	my @preferred_languages=&Apache::loncommon::preferred_languages();
$result='1';	# This should not even happen, since we should at least have the server language
if ($include) {	if (!$preferred_languages[0]) { $preferred_languages[0]='en'; }
$result='';	# Now loop over all languages in order of preference
foreach (split(/\,/,$include)) {	foreach my $preferred_language (@preferred_languages) {
if ($languages{$_}) { $result='1'; }	# If the languageblock has no arguments, show the contents
}	$result='1';
}	# Do we have an include argument?
if ($exclude) {	if ($include) {
foreach (split(/\,/,$exclude)) {	# If include is specified, by default, don't render the block
if ($languages{$_}) { $result='0'; }	$result='';
}	foreach my $included_language (split(/\,/,$include)) {
}	# ... but if my preferred language is included, render it
	if ($included_language eq $preferred_language) {
	$result='1';
	last;
	}
	}
	}
	# Do we have an exclude argument?
	if ($exclude) {
	$result='1';
	foreach my $excluded_language (split(/\,/,$exclude)) {
	if ($excluded_language eq $preferred_language) {
	$result='0';
	last;
	}
	}
	}
	}
if ( ! $result ) {	if ( ! $result ) {
my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,	my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
$style);	$style);
Line 944 sub end_languageblock {	Line 1204 sub end_languageblock {
return $result;	return $result;
}	}

	{
	my %available_texts;
	sub start_translated {
	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
	&Apache::lonxml::register('Apache::structuretags',('lang'));
	undef(%available_texts);
	}

	sub end_translated {
	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
	my $result;
	#show the translation on viewable targets
	if ($target eq 'web' \|\| $target eq 'tex' \|\| $target eq 'webgrade'\|\|
	# or non-viewable targets, if it's embedded in something that
	# wants the output
	(($target eq 'answer' \|\| $target eq 'analyze'\|\| $target eq 'grade')
	&& &Apache::lonxml::in_redirection() ) ) {
	my @possibilities = keys(%available_texts);
	my $which =
	&Apache::loncommon::languages(\@possibilities) \|\| 'default';
	$result = $available_texts{$which};
	}
	undef(%available_texts);
	&Apache::lonxml::deregister('Apache::structuretags',('lang'));
	return $result;
	}


	sub start_lang {
	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
	$target eq 'tex' \|\| $target eq 'analyze' \|\| $target eq 'webgrade') {
	&Apache::lonxml::startredirection();
	}
	return '';
	}

	sub end_lang {
	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
	$target eq 'tex' \|\| $target eq 'analyze' \|\| $target eq 'webgrade') {
	my $result = &Apache::lonxml::endredirection();
	my $which = &Apache::lonxml::get_param('which',$parstack,
	$safeeval);
	$available_texts{$which} = $result;
	}
	return '';
	}
	}

sub start_instructorcomment {	sub start_instructorcomment {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;

my $result;	my $result;

if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
$target eq 'tex' \|\| $target eq 'analyze') {	$target eq 'tex' \|\| $target eq 'analyze' \|\| $target eq 'webgrade') {
$result=($env{'request.role'}=~/^(in\|cc\|au\|ca\|li)/);	$result=($env{'request.role'}=~/^(in\|cc\|au\|ca\|li)/);
if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {	if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
my $skip=&Apache::lonxml::get_all_text("/instructorcomment",	my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
Line 975 sub end_instructorcomment {	Line 1285 sub end_instructorcomment {
}	}

sub start_while {	sub start_while {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;

my $result;	my $result;
if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
$target eq 'tex' \|\| $target eq 'analyze') {	$target eq 'tex' \|\| $target eq 'analyze' \|\| $target eq 'webgrade') {
my $code = $token->[2]->{'condition'};	my $code = $token->[2]->{'condition'};

push( @Apache::structuretags::whileconds, $code);	push( @Apache::structuretags::whileconds, $code);
Line 987 sub start_while {	Line 1297 sub start_while {
&Apache::lonxml::default_homework_load($safeeval);	&Apache::lonxml::default_homework_load($safeeval);
}	}
my $result = &Apache::run::run($code,$safeeval);	my $result = &Apache::run::run($code,$safeeval);
my $bodytext=&Apache::lonxml::get_all_text("/while",$parser);	my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
push( @Apache::structuretags::whilebody, $bodytext);	push( @Apache::structuretags::whilebody, $bodytext);
push( @Apache::structuretags::whileline, $token->[5]);	push( @Apache::structuretags::whileline, $token->[5]);
&Apache::lonxml::debug("s code $code got -$result-");	&Apache::lonxml::debug("s code $code got -$result-");
Line 1011 sub end_while {	Line 1321 sub end_while {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;	my $result;

if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
$target eq 'tex' \|\| $target eq 'analyze') {	$target eq 'tex' \|\| $target eq 'analyze' \|\| $target eq 'webgrade') {
my $code = pop(@Apache::structuretags::whileconds);	my $code = pop(@Apache::structuretags::whileconds);
my $bodytext = pop(@Apache::structuretags::whilebody);	my $bodytext = pop(@Apache::structuretags::whilebody);
my $line = pop(@Apache::structuretags::whileline);	my $line = pop(@Apache::structuretags::whileline);
Line 1022 sub end_while {	Line 1332 sub end_while {
while ($return) {	while ($return) {
if (time-$starttime >	if (time-$starttime >
$Apache::lonnet::perlvar{'lonScriptTimeout'}) {	$Apache::lonnet::perlvar{'lonScriptTimeout'}) {
#$return = 0; $error=1; next;	$return = 0; $error=1; next;
}	}
$result.=&Apache::scripttag::xmlparse($bodytext);	$result.=&Apache::scripttag::xmlparse($bodytext);
	if ($target eq 'grade' \|\| $target eq 'answer' \|\|
	$target eq 'analyze') {
	# grade/answer/analyze should produce no output but if we
	# are redirecting, the redirecter should know what to do
	# with the output
	if (!$Apache::lonxml::redirection) { undef($result); }
	}
$return = &Apache::run::run($code,$safeeval);	$return = &Apache::run::run($code,$safeeval);
}	}
if ($error) {	if ($error) {
Line 1043 sub end_while {	Line 1360 sub end_while {
# ...	# ...
# </randomlist>	# </randomlist>
sub start_randomlist {	sub start_randomlist {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;	my $result;
if ($target eq 'answer' \|\| $target eq 'grade' \|\| $target eq 'web' \|\|	if ($target eq 'answer' \|\| $target eq 'grade' \|\| $target eq 'web' \|\|
$target eq 'tex' \|\| $target eq 'analyze') {	$target eq 'tex' \|\| $target eq 'analyze' \|\| $target eq 'webgrade') {
my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);	my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
my $b_parser= HTML::TokeParser->new(\$body);	my $b_parser= HTML::LCParser->new(\$body);
	$b_parser->xml_mode(1);
	$b_parser->marked_sections(1);
my $b_tok;	my $b_tok;
my @randomlist;	my @randomlist;
my $list_item;	my $list_item;
Line 1072 sub start_randomlist {	Line 1391 sub start_randomlist {
# print "<b>END-TAG $b_tok->[1]</b><br />";	# print "<b>END-TAG $b_tok->[1]</b><br />";
# }	# }
}	}
my @idx_arr = (0 .. $#randomlist);	if (@randomlist) {
&Apache::structuretags::shuffle(\@idx_arr);	my @idx_arr = (0 .. $#randomlist);
my $bodytext = '';	&Apache::structuretags::shuffle(\@idx_arr);
my $show=$#randomlist;	my $bodytext = '';
my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);	my $show=$#randomlist;
$showarg--;	my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }	$showarg--;
for(0 .. $show) {	if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
$bodytext .= "$randomlist[ $idx_arr[$_] ]";	for(0 .. $show) {
	$bodytext .= "$randomlist[ $idx_arr[$_] ]";
	}
	&Apache::lonxml::newparser($parser,\$bodytext);
}	}
&Apache::lonxml::newparser($parser,\$bodytext);
} elsif ($target eq 'edit' ) {	} elsif ($target eq 'edit' ) {
$result .=&Apache::edit::tag_start($target,$token);	$result .=&Apache::edit::tag_start($target,$token);
$result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',	$result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
Line 1099 sub start_randomlist {	Line 1420 sub start_randomlist {
sub shuffle {	sub shuffle {
my $a=shift;	my $a=shift;
my $i;	my $i;
if (defined(@$a)) {	if (ref($a) eq 'ARRAY' && @$a) {
&Apache::response::pushrandomnumber();	&Apache::response::pushrandomnumber();
for($i=@$a;--$i;) {	for($i=@$a;--$i;) {
my $j=int(&Math::Random::random_uniform() * ($i+1));	my $j=int(&Math::Random::random_uniform() * ($i+1));
Line 1132 sub ordered_show_check {	Line 1453 sub ordered_show_check {
}	}

sub start_part {	sub start_part {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
	if (!$Apache::lonxml::metamode) {
	&Apache::lonxml::startredirection(); # we'll use redirection to fix up
	# duedates.
	}
my $result='';	my $result='';
my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);	my $id= &Apache::lonxml::get_id($parstack,$safeeval);
if ($id eq '') { $id = $Apache::lonxml::curdepth; }
$Apache::inputtags::part=$id;	$Apache::inputtags::part=$id;
push(@Apache::inputtags::partlist,$id);	push(@Apache::inputtags::partlist,$id);
@Apache::inputtags::response=();	@Apache::inputtags::response=();
Line 1157 sub start_part {	Line 1481 sub start_part {
} elsif ($target eq 'web' \|\| $target eq 'grade' \|\|	} elsif ($target eq 'web' \|\| $target eq 'grade' \|\|
$target eq 'answer' \|\| $target eq 'tex') {	$target eq 'answer' \|\| $target eq 'tex') {
if ($hidden \|\| !$in_order_show) {	if ($hidden \|\| !$in_order_show) {
my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);	my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
} else {	} else {
my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);	my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
push (@Apache::inputtags::status,$status);	push (@Apache::inputtags::status,$status);
Line 1173 sub start_part {	Line 1497 sub start_part {
( $status eq 'BANNED') \|\|	( $status eq 'BANNED') \|\|
( $status eq 'UNAVAILABLE') \|\|	( $status eq 'UNAVAILABLE') \|\|
( $status eq 'INVALID_ACCESS')) {	( $status eq 'INVALID_ACCESS')) {
my $bodytext=&Apache::lonxml::get_all_text("/part",$parser);	my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
	$style);
if ( $target eq "web" ) {	if ( $target eq "web" ) {
$result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";	$result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
} elsif ( $target eq 'tex' ) {	} elsif ( $target eq 'tex' ) {
Line 1187 sub start_part {	Line 1512 sub start_part {
if ($target eq 'tex') {	if ($target eq 'tex') {
if (not $env{'form.problem_split'}=~/yes/) {	if (not $env{'form.problem_split'}=~/yes/) {
if ($$tagstack[-2] eq 'td') {	if ($$tagstack[-2] eq 'td') {
$result.='\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';	$result.='\noindent \begin{minipage}{\textwidth}\noindent';
} else {	} else {
$result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';	$result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
}	}
Line 1205 sub start_part {	Line 1530 sub start_part {
if (defined($maxtries) && $maxtries < 0) {	if (defined($maxtries) && $maxtries < 0) {
$allow_print_points=0;	$allow_print_points=0;
}	}
	if (lc($env{'course.'.$env{'request.course.id'}.
	'.disableexampointprint'}) eq 'yes') {
	$allow_print_points=0;
	}
if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}	if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
} elsif ($target eq 'web') {	} elsif ($target eq 'web') {
$result.='<a name="'.&Apache::lonnet::escape($Apache::inputtags::part).'" />';	$result.='<a name="'.&escape($Apache::inputtags::part).'" />';
}	}
}	}
}	}
Line 1225 sub start_part {	Line 1554 sub start_part {
#limiting ids to only letters numbers, and space	#limiting ids to only letters numbers, and space
$token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;	$token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
$result = &Apache::edit::rebuild_tag($token);	$result = &Apache::edit::rebuild_tag($token);
$result.=&Apache::edit::handle_insert();
}	}
}	}
return $result;	return $result;
Line 1237 sub end_part {	Line 1565 sub end_part {
my $status=$Apache::inputtags::status['-1'];	my $status=$Apache::inputtags::status['-1'];
my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);	my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
my $in_order_show=&ordered_show_check();	my $in_order_show=&ordered_show_check();
my $result='';	my $result;
if ( $target eq 'meta' ) {	if (!$Apache::lonxml::metamode) {
$result='';	$result = &Apache::lonxml::endredirection(); # started in &start_part
} elsif ($target eq 'grade') {	$Apache::lonxml::post_evaluate=0;
	}
	if ($target eq 'grade') {
if (($status eq 'CAN_ANSWER' \|\| $Apache::lonhomework::scantronmode) &&	if (($status eq 'CAN_ANSWER' \|\| $Apache::lonhomework::scantronmode) &&
!$hidden && $in_order_show) {	!$hidden && $in_order_show) {
$result=&Apache::inputtags::grade;	$result.=&Apache::inputtags::grade;
} else {	} else {
# move any submission data to .hidden	# move any submission data to .hidden
&Apache::inputtags::hidealldata($Apache::inputtags::part);	&Apache::inputtags::hidealldata($Apache::inputtags::part);
Line 1255 sub end_part {	Line 1585 sub end_part {
if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {	if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
$gradestatus='';	$gradestatus='';
}	}
$result=$gradestatus;	$result.=$gradestatus;
if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}	if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
} elsif ($target eq 'edit') {	} elsif ($target eq 'edit') {
$result=&Apache::edit::end_table();	$result.=&Apache::edit::end_table();
	} elsif ($target eq 'modified') {
	$result .= $token->[2];
}	}
pop @Apache::inputtags::status;	pop @Apache::inputtags::status;
$Apache::inputtags::part='';	$Apache::inputtags::part='';
Line 1267 sub end_part {	Line 1599 sub end_part {
}	}

sub start_preduedate {	sub start_preduedate {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\| $target eq 'tex') {	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
	$target eq 'tex' \|\| $target eq 'webgrade') {
&Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);	&Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&	if (!$Apache::lonhomework::scantronmode &&
	$Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
$Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {	$Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
&Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));	&Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
&Apache::lonxml::get_all_text("/preduedate",$parser);	&Apache::lonxml::get_all_text("/preduedate",$parser,$style);
}	}
}	}
return '';	return '';
Line 1283 sub end_preduedate {	Line 1617 sub end_preduedate {
return '';	return '';
}	}

	# In all the modes where <postanswerdate> text is
	# displayable, all we do is eat up the text between the start/stop
	# tags if the conditions are not right to display it.
sub start_postanswerdate {	sub start_postanswerdate {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
if ($target eq 'web' \|\| $target eq 'grade') {	my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) \|\|
if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') {	&Apache::lonnet::allowed('pav',
&Apache::lonxml::get_all_text("/postanswerdate",$parser);	$env{'request.course.id'}.'/'.$env{'request.course.sec'});
	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'webgrade' \|\|
	$target eq 'tex' ) {
	if ($Apache::lonhomework::scantronmode \|\|
	$Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' \|\|
	(($target eq 'tex') && !$pav)) {
	&Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
}	}
} elsif ($target eq 'tex') {
&Apache::lonxml::get_all_text("/postanswerdate",$parser);
}	}
return '';	return '';
}	}
Line 1300 sub end_postanswerdate {	Line 1641 sub end_postanswerdate {
}	}

sub start_notsolved {	sub start_notsolved {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
$target eq 'tex') {	$target eq 'tex' \|\| $target eq 'webgrade') {
my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
&Apache::lonxml::debug("not solved has :$gradestatus:");	&Apache::lonxml::debug("not solved has :$gradestatus:");
if ($gradestatus =~ /^correct/ &&	if ($gradestatus =~ /^correct/ &&
&Apache::response::show_answer()) {	&Apache::response::show_answer()) {
&Apache::lonxml::debug("skipping");	&Apache::lonxml::debug("skipping");
&Apache::lonxml::get_all_text("/notsolved",$parser);	&Apache::lonxml::get_all_text("/notsolved",$parser,$style);
}	}
}	}
return '';	return '';
Line 1319 sub end_notsolved {	Line 1660 sub end_notsolved {
}	}

sub start_solved {	sub start_solved {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
$target eq 'tex') {	$target eq 'tex') {
my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};	my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
if ($gradestatus !~ /^correct/ \|\|	if ($gradestatus !~ /^correct/ \|\|
!&Apache::response::show_answer()) {	!&Apache::response::show_answer()) {
&Apache::lonxml::get_all_text("/solved",$parser);	&Apache::lonxml::get_all_text("/solved",$parser,$style);
}	}
}	}
return '';	return '';
Line 1336 sub end_solved {	Line 1677 sub end_solved {
}	}

sub start_problemtype {	sub start_problemtype {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;	my $result;
if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|	if ($target eq 'web' \|\| $target eq 'grade' \|\| $target eq 'answer' \|\|
$target eq 'tex' \|\| $target eq 'analyze') {	$target eq 'tex' \|\| $target eq 'analyze' \|\| $target eq 'webgrade') {
my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));	my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
if (!defined($mode)) { $mode='show'; }	if (!defined($mode)) { $mode='show'; }
my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);	my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
Line 1348 sub start_problemtype {	Line 1689 sub start_problemtype {
if ($Apache::lonhomework::type eq lc($type)) { $found=1; }	if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
}	}
if ($mode eq 'show' && !$found) {	if ($mode eq 'show' && !$found) {
&Apache::lonxml::get_all_text("/problemtype",$parser);	&Apache::lonxml::get_all_text("/problemtype",$parser,$style);
}	}
if ($mode eq 'hide' && $found) {	if ($mode eq 'hide' && $found) {
&Apache::lonxml::get_all_text("/problemtype",$parser);	&Apache::lonxml::get_all_text("/problemtype",$parser,$style);
}	}
} elsif ($target eq 'edit') {	} elsif ($target eq 'edit') {
$result .=&Apache::edit::tag_start($target,$token);	$result .=&Apache::edit::tag_start($target,$token);
Line 1385 sub start_startouttext {	Line 1726 sub start_startouttext {
}	}

sub end_startouttext {	sub end_startouttext {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';	my $result='';
my $text='';	my $text='';

if ($target eq 'edit') {	if ($target eq 'edit') {
$text=&Apache::lonxml::get_all_text("endouttext",$parser);	$text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
$result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>	$result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
<td>".&mt('Delete:').	<td>".&mt('Delete:').
&Apache::edit::deletelist($target,$token)	&Apache::edit::deletelist($target,$token)
."</td>	."</td>
<td>".	<td>".
&Apache::edit::insertlist($target,$token).	&Apache::edit::insertlist($target,$token).
	'</td><td align="right" valign="top">' .
	&Apache::loncommon::helpLatexCheatsheet().
&Apache::edit::end_row().	&Apache::edit::end_row().
&Apache::edit::start_spanning_row()."\n"	&Apache::edit::start_spanning_row()."\n".
. &Apache::loncommon::helpLatexCheatsheet () .
&Apache::edit::editfield($token->[1],$text,"",80,8,1);	&Apache::edit::editfield($token->[1],$text,"",80,8,1);
}	}
if ($target eq 'modified') {	if ($target eq 'modified') {
Line 1417 sub start_endouttext {	Line 1759 sub start_endouttext {
if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }	if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
if ($target eq "modified") {	if ($target eq "modified") {
$result='<endouttext />'.	$result='<endouttext />'.
&Apache::edit::handle_insertafter('startouttext'); }	&Apache::edit::handle_insertafter('startouttext');
	}
return $result;	return $result;
}	}

Line 1429 sub end_endouttext {	Line 1772 sub end_endouttext {
}	}

sub delete_startouttext {	sub delete_startouttext {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
# my $text=&Apache::lonxml::get_all_text("endouttext",$parser);	# my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
my $text=$$parser['-1']->get_text("/endouttext");	my $text=$$parser['-1']->get_text("/endouttext");
my $ntoken=$$parser['-1']->get_token();	my $ntoken=$$parser['-1']->get_token();
&Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");	&Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
Line 1447 sub start_simpleeditbutton {	Line 1790 sub start_simpleeditbutton {
my $result='';	my $result='';
if (($env{'form.simple_edit_button'} ne 'off') &&	if (($env{'form.simple_edit_button'} ne 'off') &&
($target eq 'web') &&	($target eq 'web') &&
(&Apache::lonnet::allowed('srm',$env{'request.course.id'}))) {	(&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
my $url=$env{'request.noversionuri'};	my $url=$env{'request.noversionuri'};
$url=~s/\?.*$//;	$url=~s/\?.*$//;
my ($symb) = &Apache::lonxml::whichuser();	my ($symb) = &Apache::lonnet::whichuser();
$result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.	$result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
'<a href="'.$url.'/smpedit?symb='.&Apache::lonnet::escape($symb).'">'.&mt('Edit').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').	'<a href="'.$url.'/smpedit?symb='.&escape($symb).'">'.&mt('Edit').'</a> - '.&mt('Note: it can take up to 10 minutes for changes to take effect for all users.').
&Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';	&Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
}	}
return $result;	return $result;

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.295
changed lines
	Added in v.1.398