Annotation of loncom/homework/structuretags.pm, revision 1.405
1.34 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
1.74 albertel 3: #
1.404 albertel 4: # $Id: structuretags.pm,v 1.403 2007/10/12 18:45:47 albertel Exp $
1.74 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: #
1.254 www 28: ###
1.54 www 29:
1.133 sakharuk 30:
1.1 albertel 31: package Apache::structuretags;
32:
33: use strict;
34: use Apache::lonnet;
1.101 sakharuk 35: use Apache::File();
1.147 www 36: use Apache::lonmenu;
1.210 albertel 37: use Apache::lonlocal;
1.231 sakharuk 38: use Apache::lonxml;
1.338 albertel 39: use Apache::lonenc();
1.267 albertel 40: use Time::HiRes qw( gettimeofday tv_interval );
1.356 www 41: use lib '/home/httpd/lib/perl/';
42: use LONCAPA;
43:
1.78 harris41 44: BEGIN {
1.397 albertel 45: &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'));
1.10 albertel 46: }
47:
48: sub start_web {
1.326 albertel 49: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.383 albertel 50: if ($target ne 'edit' && $target ne 'modified') {
51: my $bodytext=&Apache::lonxml::get_all_text("/web",$parser,$style);
52: if ($target eq 'web' || $target eq 'webgrade') {
53: return $bodytext;
54: }
55: } elsif ($target eq "edit" ) {
56: my $bodytext =
57: &Apache::lonxml::get_all_text_unbalanced("/web",$parser);
58: my $result = &Apache::edit::tag_start($target,$token);
59: $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
60: return $result;
61: } elsif ( $target eq "modified" ) {
62: return $token->[4].&Apache::edit::modifiedfield("/web",$parser);
1.159 albertel 63: }
64: return '';
1.10 albertel 65: }
66:
67: sub end_web {
1.44 ng 68: return '';
1.10 albertel 69: }
70:
71: sub start_tex {
1.326 albertel 72: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.198 sakharuk 73: my $result='';
1.383 albertel 74: if ($target ne 'edit' && $target ne 'modified') {
75: my $bodytext=&Apache::lonxml::get_all_text("/tex",$parser,$style);
76: if ($target eq 'tex') {
77: return $bodytext.' ';
78: }
79: } elsif ($target eq "edit" ) {
80: my $bodytext =
81: &Apache::lonxml::get_all_text_unbalanced("/tex",$parser);
82: my $result = &Apache::edit::tag_start($target,$token);
83: $result .= &Apache::edit::editfield($token->[1],$bodytext,'',80,1);
84: return $result;
85: } elsif ( $target eq "modified" ) {
86: return $token->[4].&Apache::edit::modifiedfield("/tex",$parser);
1.159 albertel 87: }
1.198 sakharuk 88: return $result;;
1.10 albertel 89: }
90:
91: sub end_tex {
1.44 ng 92: return '';
1.9 albertel 93: }
94:
1.400 albertel 95: sub homework_js {
96: return &Apache::loncommon::resize_textarea_js().
97: <<'JS';
98: <script type="text/javascript">
99: function setSubmittedPart (part) {
100: this.document.lonhomework.submitted.value="part_"+part;
101: }
102:
103: function image_response_click (which, e) {
104: init_geometry();
105: if (!e) { e = window.event; } //IE
106: var input_element = document.lonhomework.elements[which];
1.401 albertel 107: var token_element = document.lonhomework.elements[which+'_token'];
1.400 albertel 108: var token = token_element.value;
1.401 albertel 109: var img_element = document.getElementById(which+'_imageresponse');
1.400 albertel 110: var x= e.clientX-getX(img_element)+Geometry.getHorizontalScroll();
111: var y= e.clientY-getY(img_element)+Geometry.getVerticalScroll();
112: var click = x+':'+y;
113: input_element.value = click;
114: img_element.src = '/adm/randomlabel.png?token='+token+'&clickdata='+click;
115: }
116: </script>
117: JS
118: }
119:
1.48 albertel 120: sub page_start {
1.345 albertel 121: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$name,
122: $extra_head)=@_;
1.159 albertel 123: my %found;
1.207 albertel 124: foreach my $taginside (@$tagstack) {
1.159 albertel 125: foreach my $taglookedfor ('html','body','form') {
126: if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
127: }
128: }
129:
1.343 albertel 130: if ($target eq 'tex') {
131: return
132: &Apache::londefdef::start_html($target,$token,$tagstack,
133: $parstack,$parser,$safeeval);
134: }
135:
1.400 albertel 136: $extra_head .= &homework_js();
1.374 albertel 137:
1.344 albertel 138: my %body_args;
139: if (defined($found{'html'})) {
140: $body_args{'skip_phases'}{'head'}=1;
141: } else {
1.343 albertel 142:
1.345 albertel 143: $extra_head .= &Apache::lonhtmlcommon::spellheader();
1.343 albertel 144:
1.379 albertel 145: $extra_head .= &Apache::londefdef::generate_css_links();
146:
1.384 albertel 147: if ($env{'request.state'} eq 'construct') {
1.343 albertel 148: $extra_head.=&Apache::edit::js_change_detection().
149: "<script type=\"text/javascript\">\n".
150: "if (typeof swmenu != 'undefined') {swmenu.currentURL=null;}\n".
151: &Apache::loncommon::browser_and_searcher_javascript().
152: "\n</script>\n";
153: }
1.159 albertel 154: }
1.343 albertel 155:
1.344 albertel 156: if (defined($found{'body'})) {
157: $body_args{'skip_phases'}{'body'}=1;
158: } elsif (!defined($found{'body'})
159: && $env{'request.state'} eq 'construct') {
1.343 albertel 160: if ($target eq 'web' || $target eq 'edit') {
1.402 albertel 161: if ($env{'environment.remote'} ne 'off') {
162: $body_args{'only_body'} = 1;
163: }
1.297 albertel 164: }
1.272 albertel 165: } elsif (!defined($found{'body'})) {
1.343 albertel 166: my %add_entries;
1.159 albertel 167: my $background=&Apache::lonxml::get_param('background',$parstack,
168: $safeeval);
1.343 albertel 169: if ($background ne '' ) {
170: $add_entries{'background'} = $background;
171: }
1.344 albertel 172:
1.290 albertel 173: my $bgcolor=&Apache::lonxml::get_param('bgcolor',$parstack,
174: $safeeval);
1.344 albertel 175: if ($bgcolor eq '' ) { $bgcolor = '#FFFFFF'; }
176:
177: $body_args{'bgcolor'} = $bgcolor;
178: $body_args{'no_title'} = 1;
179: $body_args{'force_register'} = 1;
180: $body_args{'add_entries'} = \%add_entries;
1.391 albertel 181: if ($env{'environment.remote'} eq 'off'
182: && $env{'request.state'} eq 'construct') {
183: $body_args{'only_body'} = 1;
184: }
1.344 albertel 185: }
1.365 albertel 186: $body_args{'no_auto_mt_title'} = 1;
1.344 albertel 187: my $page_start = &Apache::loncommon::start_page($name,$extra_head,
188: \%body_args);
189:
190: if (!defined($found{'body'})
191: && $env{'request.state'} ne 'construct'
192: && ($target eq 'web' || $target eq 'webgrade')) {
193:
1.367 albertel 194: my ($symb,undef,undef,undef,$publicuser)= &Apache::lonnet::whichuser();
1.344 albertel 195: if ($symb eq '' && !$publicuser) {
196: my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
197: $help=&mt("Browsing resource, all submissions are temporary.")."<br />";
198: $page_start .= $help;
1.159 albertel 199: }
1.344 albertel 200: }
201:
202: if (!defined($found{'body'})) {
1.343 albertel 203: $page_start .= &Apache::lonxml::message_location();
1.159 albertel 204: }
1.344 albertel 205:
1.159 albertel 206: my $form_tag_start;
207: if (!defined($found{'form'})) {
1.337 albertel 208: $form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
1.338 albertel 209: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.327 albertel 210: $form_tag_start.=$uri.'" ';
211: if ($target eq 'edit') {
212: $form_tag_start.=&Apache::edit::form_change_detection();
213: }
1.368 albertel 214: $form_tag_start.='>'."\n";
1.355 albertel 215:
216: my $symb=&Apache::lonnet::symbread();
217: if ($symb =~ /\S/) {
218: $symb=
219: &HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb));
220: $form_tag_start.=
1.368 albertel 221: "\t".'<input type="hidden" name="symb" value="'.$symb.'" />'."\n";
1.355 albertel 222: }
1.159 albertel 223: }
1.343 albertel 224: return ($page_start,$form_tag_start);
1.105 albertel 225: }
226:
1.141 matthew 227: #use Time::HiRes();
1.105 albertel 228: sub get_resource_name {
1.159 albertel 229: my ($parstack,$safeeval)=@_;
1.388 foxr 230: my $name;
1.204 albertel 231: if (defined($Apache::lonhomework::name)) {
1.388 foxr 232: $name = $Apache::lonhomework::name;
233: } else {
234: my ($symb)=&Apache::lonnet::whichuser();
1.392 albertel 235: $name=&Apache::lonnet::gettitle($symb);
1.388 foxr 236: if ($name eq '') {
237: $name=&Apache::lonnet::EXT('resource.title');
238: if ($name eq 'con_lost') { $name = ''; }
239: }
240: if ($name!~/\S+/) {
241: $name=$env{'request.uri'};
242: $name=~s-.*/([^/]+)$-$1-;
243: }
244: # The name has had html tags escaped:
245:
246: $name=~s/</</gs;
247: $name=~s/>/>/gs;
248:
249: $Apache::lonhomework::name=$name;
1.204 albertel 250: }
1.159 albertel 251: return $name;
1.105 albertel 252: }
253:
254: sub setup_rndseed {
1.159 albertel 255: my ($safeeval)=@_;
256: my $rndseed;
1.367 albertel 257: my ($symb)=&Apache::lonnet::whichuser();
1.333 albertel 258: if ($env{'request.state'} eq "construct"
259: || $symb eq ''
260: || $Apache::lonhomework::type eq 'practice'
261: || $Apache::lonhomework::history{'resource.CODE'}) {
1.316 www 262: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.317 albertel 263: ['rndseed']);
1.284 albertel 264: $rndseed=$env{'form.rndseed'};
1.159 albertel 265: if (!$rndseed) {
1.162 albertel 266: $rndseed=$Apache::lonhomework::history{'rndseed'};
267: if (!$rndseed) {
268: $rndseed=time;
269: }
1.284 albertel 270: $env{'form.rndseed'}=$rndseed;
1.162 albertel 271: }
1.374 albertel 272: if ( ($env{'form.resetdata'} eq &mt('New Problem Variation')
273: && $env{'form.submitted'} eq 'yes') ||
1.284 albertel 274: $env{'form.newrandomization'} eq &mt('New Randomization')) {
1.190 albertel 275: srand(time);
276: $rndseed=int(rand(2100000000));
1.284 albertel 277: $env{'form.rndseed'}=$rndseed;
278: delete($env{'form.resetdata'});
279: delete($env{'form.newrandomization'});
1.159 albertel 280: }
1.187 albertel 281: if (defined($rndseed) && $rndseed ne int($rndseed)) {
1.307 albertel 282: $rndseed=join(':',&Apache::lonnet::digest($rndseed));
1.187 albertel 283: }
1.247 albertel 284: if ($Apache::lonhomework::history{'resource.CODE'}) {
285: $rndseed=&Apache::lonnet::rndseed();
286: }
1.221 albertel 287: if ($safeeval) {
288: &Apache::lonxml::debug("Setting rndseed to $rndseed");
1.250 albertel 289: &Apache::run::run('$external::randomseed="'.$rndseed.'";',$safeeval);
1.221 albertel 290: }
1.159 albertel 291: }
292: return $rndseed;
1.105 albertel 293: }
294:
1.268 albertel 295: sub remember_problem_state {
296: return '
1.284 albertel 297: <input type="hidden" name="problemstate" value="'.$env{'form.problemstate'}.'" />
298: <input type="hidden" name="problemtype" value="'.$env{'form.problemtype'}.'" />
299: <input type="hidden" name="problemstatus" value="'.$env{'form.problemstatus'}.'" />';
1.268 albertel 300: }
301:
1.105 albertel 302: sub problem_edit_header {
1.268 albertel 303: return '<input type="hidden" name="submitted" value="edit" />'.
304: &Apache::structuretags::remember_problem_state().'
1.210 albertel 305: <input type="hidden" name="problemmode" value="'.&mt('Edit').'" />
1.243 matthew 306: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
1.328 albertel 307: <input '.&Apache::edit::submit_ask_anyway().' type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243 matthew 308: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" /> <hr />
309: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes and Edit').'" />
310: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" /><table><tr><td>'.
1.359 albertel 311: &Apache::loncommon::help_open_menu('Problem Editing Help','Problem_Editor_XML_Index',5,'Authoring',undef,undef,undef,'Problem Editing Help')
1.260 albertel 312: .'</td></tr></table>'.
1.282 albertel 313: '<table border="0" width="100%"><tr><td bgcolor="#DDDDDD">';
1.105 albertel 314: }
315:
316: sub problem_edit_footer {
1.210 albertel 317: return '</td></tr></table><br /><input type="submit" name="submit" value="'.&mt('Submit Changes and Edit').'" />
1.255 www 318: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />'.
1.348 albertel 319: &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields()).
1.342 albertel 320: "\n</form>\n".&Apache::loncommon::end_page();
1.105 albertel 321: }
322:
1.235 albertel 323: sub option {
324: my ($value,$name) = @_;
325: my $result ="<option value='".$value."' ";
1.284 albertel 326: if ($env{'form.'.$name} eq $value) {
1.235 albertel 327: $result.=" selected='on' ";
328: }
329: $result.='>';
330: return $result;
331: }
332:
1.105 albertel 333: sub problem_web_to_edit_header {
1.159 albertel 334: my ($rndseed)=@_;
1.313 albertel 335: my $result.='<input type="hidden" name="problemmode" value="'.&mt('View').'" />';
1.373 albertel 336: $result .= '<input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />';
1.313 albertel 337: $result .= '<input type="submit" name="problemmode" accesskey="x" value="'.&mt('EditXML').'" />
1.243 matthew 338: <input type="submit" name="newrandomization" accesskey="a" value="'.&mt('New Randomization').'" />
339: <input type="submit" name="resetdata" accesskey="r" value="'.&mt('Reset Submissions').'" />
1.210 albertel 340: <nobr><input type="submit" name="changerandseed" value="'.&mt('Change Random Seed To:').'" />
1.270 albertel 341: <input type="text" name="rndseed" size="10" value="'.
1.175 albertel 342: $rndseed.'"
1.270 albertel 343: onchange="javascript:document.lonhomework.changerandseed.click()" /></nobr>
1.384 albertel 344: <span class="LC_nobreak"><label><input type="checkbox" name="showallfoils" ';
1.315 albertel 345: my $show_all_foils_text =
346: ($Apache::lonhomework::parsing_a_task) ?
347: &mt(' Show All Instances')
348: : &mt(' Show All Foils');
349:
1.284 albertel 350: if (defined($env{'form.showallfoils'})) { $result.='checked="on"'; }
1.384 albertel 351: $result.= ' />'.$show_all_foils_text.'</label></span>'.
1.228 www 352: &Apache::loncommon::help_open_topic('Problem_Editor_Testing_Area','Testing Problems').
1.371 albertel 353: '<hr />';
1.386 albertel 354: $result.=&mt('Apply style file: ').'
1.384 albertel 355: <input type="text" name="style_file" value="'.&HTML::Entities::encode($env{'construct.style'},'"<>&').'" />
356: <a href="javascript:openbrowser(\'lonhomework\',\'style_file\',\'sty\')">'.&mt('Select').'</a>
357: <input type="submit" name="clear_style_file" value="'.&mt('Clear').'" />
358: <br />';
359:
1.313 albertel 360: if (!$Apache::lonhomework::parsing_a_task) {
361: $result.="
1.235 albertel 362: <nobr>
1.405 ! albertel 363: ".&mt("Problem Status:")."
1.235 albertel 364: <select name='problemstate'>
1.270 albertel 365: <option value=''></option>
1.235 albertel 366: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
367: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
368: ".&option('CANNOT_ANSWER_tries' ,'problemstate').&mt("Open with full tries")."</option>
369: ".&option('CANNOT_ANSWER_correct','problemstate').&mt("Open and correct")."</option>
370: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Answer")."</option>
371: </select>
372: </nobr>
373: <nobr>
1.405 ! albertel 374: ".&mt("Problem Type:")."
1.235 albertel 375: <select name='problemtype'>
1.270 albertel 376: <option value=''></option>
1.242 albertel 377: ".&option('exam' ,'problemtype').&mt("Exam Problem")."</option>
378: ".&option('problem','problemtype').&mt("Homework problem")."</option>
379: ".&option('survey' ,'problemtype').&mt("Survey Question")."</option>
1.235 albertel 380: </select>
381: </nobr>
382: <nobr>
1.405 ! albertel 383: ".&mt("Feedback Mode:")."
1.235 albertel 384: <select name='problemstatus'>
385: <option value=''></option>
1.242 albertel 386: ".&option('yes','problemstatus').&mt("Show Feedback")."</option>
1.405 ! albertel 387: ".&option('no', 'problemstatus').&mt("Don't Show Incorect/Correct Feedback")."</option>
! 388: ".&option('no_feedback_ever', 'problemstatus').&mt("Don't Show Any Feedback")."</option>
1.235 albertel 389: </select>
390: </nobr>
1.242 albertel 391: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
1.235 albertel 392: <hr />";
1.313 albertel 393: my $numtoanalyze=$env{'form.numtoanalyze'};
394: if (!$numtoanalyze) { $numtoanalyze=20; }
395: $result.= '<input type="submit" name="problemmode" value='.
396: &mt('"Calculate answers').'" /> for
1.136 albertel 397: <input type="text" name="numtoanalyze" value="'.
1.210 albertel 398: $numtoanalyze.'" size="5" /> '.&mt('versions of this problem').
399: '.'.&Apache::loncommon::help_open_topic("Analyze_Problem",
1.176 albertel 400: '',undef,undef,300).
1.210 albertel 401: '<hr />';
1.376 albertel 402: } elsif ($Apache::lonhomework::parsing_a_task) {
403: $result.="
404: <nobr>
1.405 ! albertel 405: ".&mt("Problem Status:")."
1.376 albertel 406: <select name='problemstate'>
407: <option value=''></option>
408: ".&option('CLOSED' ,'problemstate').&mt("Closed")."</option>
409: ".&option('CAN_ANSWER' ,'problemstate').&mt("Answerable")."</option>
410: ".&option('WEB_GRADE' ,'problemstate').&mt("Criteria Grading")."</option>
411: ".&option('SHOW_ANSWER' ,'problemstate').&mt("Show Feedback")."</option>
412: </select>
413: </nobr>
414: <input type='submit' name='changeproblemmode' value='".&mt("Change")."' />
415: <hr />";
1.313 albertel 416: }
1.159 albertel 417: return $result;
1.48 albertel 418: }
419:
1.65 albertel 420: sub initialize_storage {
1.357 albertel 421: my ($given_symb) = @_;
1.353 albertel 422: undef(%Apache::lonhomework::results);
423: undef(%Apache::lonhomework::history);
1.357 albertel 424: my ($symb,$courseid,$domain,$name) =
1.367 albertel 425: &Apache::lonnet::whichuser($given_symb);
1.353 albertel 426:
427: # anonymous users (CODEd exams) have no data
428: if ($name eq 'anonymous'
429: && !defined($domain)) {
430: return;
431: }
432:
1.333 albertel 433: if ($env{'request.state'} eq 'construct'
434: || $symb eq ''
435: || $Apache::lonhomework::type eq 'practice') {
436:
437: my $namespace = $symb || $env{'request.uri'};
438: if ($env{'form.resetdata'} eq &mt('Reset Submissions') ||
1.374 albertel 439: ($env{'form.resetdata'} eq &mt('New Problem Variation')
440: && $env{'form.submitted'} eq 'yes') ||
1.333 albertel 441: $env{'form.newrandomization'} eq &mt('New Randomization')) {
442: &Apache::lonnet::tmpreset($namespace,'',$domain,$name);
443: &Apache::lonxml::debug("Attempt reset");
444: }
1.159 albertel 445: %Apache::lonhomework::history=
1.333 albertel 446: &Apache::lonnet::tmprestore($namespace,'',$domain,$name);
1.159 albertel 447: my ($temp)=keys %Apache::lonhomework::history ;
448: &Apache::lonxml::debug("Return message of $temp");
449: } else {
450: %Apache::lonhomework::history=
451: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
452: }
1.353 albertel 453:
1.159 albertel 454: #ignore error conditions
1.67 albertel 455: my ($temp)=keys %Apache::lonhomework::history ;
1.159 albertel 456: if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
1.65 albertel 457: }
458:
459: # -------------------------------------------------------------finalize_storage
460: # Stores away the result has to a student's environment
461: # checks form.grade_ for specific values, other wises stores
462: # to the running users environment
1.285 raeburn 463: # Will increment totals for attempts, students, and corrects
464: # if running user has student role.
1.65 albertel 465: sub finalize_storage {
1.357 albertel 466: my ($given_symb) = @_;
1.159 albertel 467: my $result;
1.289 albertel 468: if (%Apache::lonhomework::results) {
1.323 albertel 469: my @remove = grep(/^INTERNAL_/,keys(%Apache::lonhomework::results));
470: delete(@Apache::lonhomework::results{@remove});
1.357 albertel 471: my ($symb,$courseid,$domain,$name) =
1.367 albertel 472: &Apache::lonnet::whichuser($given_symb);
1.333 albertel 473: if ($env{'request.state'} eq 'construct'
474: || $symb eq ''
475: || $Apache::lonhomework::type eq 'practice') {
476: my $namespace = $symb || $env{'request.uri'};
1.284 albertel 477: $Apache::lonhomework::results{'rndseed'}=$env{'form.rndseed'};
1.159 albertel 478: $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results,
1.333 albertel 479: $namespace,'',$domain,$name);
1.159 albertel 480: &Apache::lonxml::debug('Construct Store return message:'.$result);
481: } else {
482: $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results,
483: $symb,$courseid,$domain,$name);
484: &Apache::lonxml::debug('Store return message:'.$result);
1.285 raeburn 485: if ($env{'request.role'} =~/^st/) {
486: &store_aggregates($symb,$courseid);
487: }
1.159 albertel 488: }
1.323 albertel 489: } else {
490: &Apache::lonxml::debug('Nothing to store');
1.67 albertel 491: }
1.159 albertel 492: return $result;
1.65 albertel 493: }
494:
1.285 raeburn 495: # -------------------------------------------------------------store_aggregates
496: # Sends hash of values to be incremented in nohist_resourcetracker.db
497: # for the course. Increments total number of attempts, unique students
498: # and corrects for each part for an instance of a problem, as appropriate.
499: sub store_aggregates {
500: my ($symb,$courseid) = @_;
1.286 albertel 501: my %aggregate;
502: my @parts;
1.288 albertel 503: my $cdomain = $env{'course.'.$env{'request.course.id'}.'.domain'};
504: my $cname = $env{'course.'.$env{'request.course.id'}.'.num'};
1.286 albertel 505: foreach my $key (keys(%Apache::lonhomework::results)) {
1.287 albertel 506: if ($key =~ /resource\.([^\.]+)\.tries/) {
1.286 albertel 507: push(@parts, $1);
1.285 raeburn 508: }
509: }
1.286 albertel 510: foreach my $part (@parts) {
511: if ($Apache::lonhomework::results{'resource.'.$part.'.award'}
512: eq 'APPROX_ANS' ||
513: $Apache::lonhomework::results{'resource.'.$part.'.award'}
514: eq 'EXACT_ANS') {
1.287 albertel 515: $aggregate{$symb."\0".$part."\0correct"} = 1;
1.285 raeburn 516: }
1.286 albertel 517: if ($Apache::lonhomework::results{'resource.'.$part.'.tries'} == 1) {
1.287 albertel 518: $aggregate{$symb."\0".$part."\0users"} = 1;
1.292 raeburn 519: } else {
1.293 albertel 520: my (undef,$last_reset) = &Apache::grades::get_last_resets($symb,$env{'request.course.id'},[$part]);
1.292 raeburn 521: if ($last_reset) {
1.293 albertel 522: if (&Apache::grades::get_num_tries(\%Apache::lonhomework::history,$last_reset,$part) == 0) {
1.292 raeburn 523: $aggregate{$symb."\0".$part."\0users"} = 1;
524: }
525: }
1.285 raeburn 526: }
1.287 albertel 527: $aggregate{$symb."\0".$part."\0attempts"} = 1;
1.285 raeburn 528: }
1.292 raeburn 529: if (keys (%aggregate) > 0) {
1.289 albertel 530: &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
1.292 raeburn 531: $cdomain,$cname);
532: }
533: }
1.289 albertel 534:
1.65 albertel 535: sub checkout_msg {
1.211 albertel 536: my %lt=&Apache::lonlocal::texthash(
537: 'resource'=>'The resource needs to be checked out',
538: 'id_expln'=>'As a resource gets checked out, a unique timestamped ID is given to it, and a permanent record is left in the system.',
539: 'warning'=>'Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.',
540: 'checkout'=>'Check out Exam for Viewing',
541: 'checkout?'=>'Check out Exam?');
1.352 albertel 542: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.159 albertel 543: return (<<ENDCHECKOUT);
1.211 albertel 544: <h2>$lt{'resource'}</h2>
545: <p>$lt{'id_expln'}</p>
546: <font color="red">
547: <p>$lt{'warning'}</p>
1.91 albertel 548: </font>
1.352 albertel 549: <form name="checkout" method="POST" action="$uri">
1.91 albertel 550: <input type="hidden" name="doescheckout" value="yes" />
1.211 albertel 551: <input type="button" name="checkoutbutton" value="$lt{'checkout'}" onClick="javascript:if (confirm('$lt{'checkout?'}')) { document.checkout.submit(); }" />
1.65 albertel 552: </form>
553: ENDCHECKOUT
554: }
555:
1.252 albertel 556: sub firstaccess_msg {
1.253 albertel 557: my ($time,$symb)=@_;
558: my ($map)=&Apache::lonnet::decode_symb($symb);
559: my $foldertitle=&Apache::lonnet::gettitle($map);
560: &Apache::lonxml::debug("map is $map title is $foldertitle");
1.352 albertel 561: my $uri = &Apache::lonenc::check_encrypt($env{'request.uri'});
1.252 albertel 562: return (<<ENDCHECKOUT);
1.253 albertel 563: <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>
1.352 albertel 564: <form name="markaccess" method="POST" action="$uri">
1.252 albertel 565: <input type="hidden" name="markaccess" value="yes" />
566: <input type="button" name="accessbutton" value="Show Resource" onClick="javascript:if (confirm('Start Timer?')) { document.markaccess.submit(); }" />
567: </form>
568: ENDCHECKOUT
569: }
570:
1.204 albertel 571: sub init_problem_globals {
572: my ($type)=@_;
573: #initialize globals
1.308 foxr 574: # For problems, we start out in part 0 (outside a <part> tag).
575: # and part 0 is used to describe the main body of the <problem>
576: #
1.204 albertel 577: if ($type eq 'problem') {
578: $Apache::inputtags::part='0';
579: @Apache::inputtags::partlist=('0');
1.405 ! albertel 580: &Apache::lonhomework::set_show_problem_status(&get_problem_status('0'));
1.266 albertel 581: $Apache::lonhomework::ignore_response_errors=0;
1.308 foxr 582:
1.266 albertel 583: } elsif ($type eq 'library') {
1.204 albertel 584: $Apache::inputtags::part='';
585: @Apache::inputtags::partlist=();
1.405 ! albertel 586: &Apache::lonhomework::reset_show_problem_status();
1.266 albertel 587: $Apache::lonhomework::ignore_response_errors=1;
1.308 foxr 588:
1.304 albertel 589: } elsif ($type eq 'Task') {
590: $Apache::inputtags::part='0';
591: @Apache::inputtags::partlist=('0');
1.405 ! albertel 592: &Apache::lonhomework::reset_show_problem_status();
1.304 albertel 593: $Apache::lonhomework::ignore_response_errors=1;
1.204 albertel 594: }
595: @Apache::inputtags::responselist = ();
596: @Apache::inputtags::importlist = ();
597: @Apache::inputtags::previous=();
598: @Apache::inputtags::previous_version=();
599: $Apache::structuretags::printanswer='No';
600: @Apache::structuretags::whileconds=();
601: @Apache::structuretags::whilebody=();
602: @Apache::structuretags::whileline=();
603: $Apache::lonhomework::scantronmode=0;
604: undef($Apache::lonhomework::name);
1.358 albertel 605: undef($Apache::lonhomework::default_type);
606: undef($Apache::lonhomework::type);
1.204 albertel 607: }
608:
609: sub reset_problem_globals {
610: my ($type)=@_;
611: undef(%Apache::lonhomework::history);
612: undef(%Apache::lonhomework::results);
613: undef($Apache::inputtags::part);
1.208 albertel 614: #don't undef this, lonhomework.pm takes care of this, we use this to
615: #detect if we try to do 2 problems in one file
616: # undef($Apache::lonhomework::parsing_a_problem);
1.204 albertel 617: undef($Apache::lonhomework::name);
1.358 albertel 618: undef($Apache::lonhomework::default_type);
619: undef($Apache::lonhomework::type);
620: undef($Apache::lonhomework::scantronmode);
621: undef($Apache::lonhomework::ignore_response_errors);
1.405 ! albertel 622: &Apache::lonhomework::reset_show_problem_status();
1.204 albertel 623: }
624:
1.241 albertel 625: sub set_problem_state {
1.240 albertel 626: my ($part)=@_;
1.284 albertel 627: if ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct') {
1.240 albertel 628: $Apache::lonhomework::history{"resource.$part.solved"}=
629: 'correct_by_student';
630: }
631: }
632:
1.241 albertel 633: sub get_problem_status {
634: my ($part)=@_;
1.267 albertel 635: my $problem_status;
1.284 albertel 636: if ($env{'request.state'} eq 'construct' &&
637: defined($env{'form.problemstatus'})) {
638: $problem_status=$env{'form.problemstatus'};
1.267 albertel 639: } else {
640: $problem_status=&Apache::lonnet::EXT("resource.$part.problemstatus");
641: &Apache::lonxml::debug("problem status for $part is $problem_status");
1.284 albertel 642: &Apache::lonxml::debug("env probstat is ".$env{'form.problemstatus'});
1.241 albertel 643: }
644: return $problem_status;
645: }
646:
1.9 albertel 647: sub start_problem {
1.326 albertel 648: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.19 albertel 649:
1.311 foxr 650: # We'll use the redirection to fix up printing of duedates.
1.321 albertel 651: if (!$Apache::lonxml::metamode) {
652: &Apache::lonxml::startredirection();
653: }
1.311 foxr 654:
1.308 foxr 655: # Problems don't nest and we don't allow more than one <problem> in
656: # a .problem file.
657: #
1.184 albertel 658: if ( $Apache::inputtags::part ne '' ||
659: $Apache::lonhomework::parsing_a_problem) {
660: &Apache::lonxml::error('Only one <problem> allowed in a .problem file');
1.326 albertel 661: #my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,$style);
1.159 albertel 662: return '';
663: }
1.184 albertel 664:
665: $Apache::lonhomework::parsing_a_problem=1;
1.204 albertel 666: &init_problem_globals('problem');
1.166 albertel 667:
1.284 albertel 668: if (defined($env{'scantron.maxquest'})) {
1.166 albertel 669: $Apache::lonhomework::scantronmode=1;
670: }
1.161 albertel 671:
1.159 albertel 672: if ($target ne 'analyze') {
673: $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
1.284 albertel 674: if (($env{'request.state'} eq 'construct') &&
675: defined($env{'form.problemtype'})) {
676: $Apache::lonhomework::type=$env{'form.problemtype'};
1.237 albertel 677: }
1.332 albertel 678: &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
1.159 albertel 679: }
1.164 albertel 680: if ($Apache::lonhomework::type eq '' ) {
1.284 albertel 681: my $uri=$env{'request.uri'};
1.159 albertel 682: if ($uri=~/\.(\w+)$/) {
683: $Apache::lonhomework::type=$1;
684: &Apache::lonxml::debug("Using type of $1");
685: } else {
686: $Apache::lonhomework::type='problem';
687: &Apache::lonxml::debug("Using default type, problem, :$uri:");
688: }
1.87 albertel 689: }
1.301 albertel 690: $Apache::lonhomework::default_type = $Apache::lonhomework::type;
1.58 www 691:
1.363 albertel 692: &initialize_storage();
1.389 albertel 693: if ($target ne 'analyze'
694: && $env{'request.state'} eq 'construct') {
695: &set_problem_state('0');
696: }
697:
1.366 albertel 698: if ($target eq 'web') {
699: &Apache::lonxml::debug(" grading history ");
700: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
701: }
1.363 albertel 702:
1.159 albertel 703: #added vars to the scripting enviroment
1.213 albertel 704: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.248 albertel 705: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.24 albertel 706: &Apache::run::run($expression,$safeeval);
1.159 albertel 707: my $status;
708: my $accessmsg;
709:
1.343 albertel 710: my $name= &get_resource_name($parstack,$safeeval);
1.350 albertel 711: my ($result,$form_tag_start);
1.354 albertel 712: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex'
713: || $target eq 'edit') {
1.350 albertel 714: ($result,$form_tag_start) =
715: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
716: $name);
717: }
718:
1.284 albertel 719: if ($target eq 'tex' and $env{'request.symb'} =~ m/\.page_/) {$result='';}
1.159 albertel 720:
721: if ($target eq 'analyze') { my $rndseed=&setup_rndseed($safeeval); }
722: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
723: $target eq 'tex') {
724: #handle exam checkout
725: if ($Apache::lonhomework::type eq 'exam') {
726: my $token=
727: $Apache::lonhomework::history{"resource.0.outtoken"};
1.284 albertel 728: if (($env{'form.doescheckout'}) && (!$token)) {
1.159 albertel 729: $token=&Apache::lonxml::maketoken();
730: $Apache::lonhomework::history{"resource.0.outtoken"}=
731: $token;
732: }
1.343 albertel 733: $result.=&Apache::lonxml::printtokenheader($target,$token);
1.142 albertel 734: }
1.284 albertel 735: if ($env{'form.markaccess'}) {
1.252 albertel 736: &Apache::lonnet::set_first_access('map');
737: }
1.159 albertel 738: #handle rand seed in construction space
739: my $rndseed=&setup_rndseed($safeeval);
1.367 albertel 740: my ($symb)=&Apache::lonnet::whichuser();
1.333 albertel 741: if ($env{'request.state'} ne "construct" &&
742: ($symb eq '' || $Apache::lonhomework::type eq 'practice')) {
1.162 albertel 743: $form_tag_start.='<input type="hidden" name="rndseed" value="'.
744: $rndseed.'" />'.
745: '<input type="submit" name="resetdata"
1.334 albertel 746: value="'.&mt('New Problem Variation').'" />';
747: if (exists($env{'form.username'})) {
748: $form_tag_start.=
1.164 albertel 749: '<input type="hidden" name="username"
1.284 albertel 750: value="'.$env{'form.username'}.'" />';
1.334 albertel 751: }
1.333 albertel 752: if ($env{'request.role.adv'}) {
1.267 albertel 753: $form_tag_start.=
1.300 albertel 754: ' <label><input type="checkbox" name="showallfoils" ';
1.284 albertel 755: if (defined($env{'form.showallfoils'})) {
1.267 albertel 756: $form_tag_start.='checked="on"';
757: }
1.300 albertel 758: $form_tag_start.= ' />'.&mt(' Show All Foils').
759: '</label>';
1.267 albertel 760: }
761: $form_tag_start.='<hr />';
1.162 albertel 762: }
1.324 albertel 763:
764: ($status,$accessmsg,my $slot_name,my $slot) =
765: &Apache::lonhomework::check_slot_access('0','problem');
1.159 albertel 766: push (@Apache::inputtags::status,$status);
1.324 albertel 767:
1.159 albertel 768: my $expression='$external::datestatus="'.$status.'";';
769: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
770: &Apache::run::run($expression,$safeeval);
771: &Apache::lonxml::debug("Got $status");
1.324 albertel 772:
1.159 albertel 773: if (( $status eq 'CLOSED' ) ||
774: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 775: ( $status eq 'NOT_YET_VIEWED') ||
1.159 albertel 776: ( $status eq 'BANNED') ||
1.216 albertel 777: ( $status eq 'UNAVAILABLE') ||
1.324 albertel 778: ( $status eq 'NOT_IN_A_SLOT') ||
1.216 albertel 779: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 780: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
781: $style);
1.159 albertel 782: if ( $target eq "web" ) {
1.343 albertel 783: my $msg;
1.159 albertel 784: if ($status eq 'UNAVAILABLE') {
1.245 albertel 785: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.253 albertel 786: } elsif ($status ne 'NOT_YET_VIEWED') {
1.245 albertel 787: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
1.159 albertel 788: }
1.216 albertel 789: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
1.393 www 790: $msg.=&mt('The problem ').$accessmsg;
1.159 albertel 791: } elsif ($status eq 'UNCHECKEDOUT') {
1.343 albertel 792: $msg.=&checkout_msg();
1.252 albertel 793: } elsif ($status eq 'NOT_YET_VIEWED') {
1.253 albertel 794: $msg.=&firstaccess_msg($accessmsg,$symb);
1.325 albertel 795: } elsif ($status eq 'NOT_IN_A_SLOT') {
796: $msg.=&Apache::bridgetask::add_request_another_attempt_button("Sign up for time to work.");
1.159 albertel 797: }
798: $result.=$msg.'<br />';
799: } elsif ($target eq 'tex') {
1.332 albertel 800: my $startminipage = ($env{'form.problem_split'}=~/yes/i)? ''
801: : '\begin{minipage}{\textwidth}';
802: $result.='\begin{document}\noindent \vskip 1 mm '.
803: $startminipage.'\vskip 0 mm';
1.159 albertel 804: if ($status eq 'UNAVAILABLE') {
1.211 albertel 805: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
1.159 albertel 806: } else {
1.211 albertel 807: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
1.159 albertel 808: }
809: }
1.324 albertel 810: } elsif ($status eq 'NEEDS_CHECKIN') {
1.326 albertel 811: my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser,
812: $style);
1.324 albertel 813: if ($target eq 'web') {
1.375 albertel 814: $result .=
815: &Apache::bridgetask::proctor_validation_screen($slot);
1.324 albertel 816: } elsif ($target eq 'grade') {
817: &Apache::bridgetask::proctor_check_auth($slot_name,$slot,
818: 'problem');
819: }
1.159 albertel 820: } elsif ($target eq 'web') {
1.360 albertel 821: if ($status eq 'CAN_ANSWER'
822: && $slot_name ne ''
823: && $Apache::lonhomework::history{'resource.0.checkedin'} eq '') {
824: # unproctored slot access, self checkin
825: &Apache::bridgetask::check_in('problem',undef,undef,
826: $slot_name);
827: }
1.368 albertel 828: $result.="\n $form_tag_start \t".
1.227 albertel 829: '<input type="hidden" name="submitted" value="yes" />';
830: # create a page header and exit
1.284 albertel 831: if ($env{'request.state'} eq "construct") {
832: $result.= &problem_web_to_edit_header($env{'form.rndseed'});
1.227 albertel 833: }
834: # if we are viewing someone else preserve that info
1.284 albertel 835: if (defined $env{'form.grade_symb'}) {
1.227 albertel 836: foreach my $field ('symb','courseid','domain','username') {
837: $result .= '<input type="hidden" name="grade_'.$field.
1.284 albertel 838: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.159 albertel 839: }
840: }
841: } elsif ($target eq 'tex') {
1.319 foxr 842: $result .= 'INSERTTEXFRONTMATTERHERE';
843:
1.99 sakharuk 844: }
1.159 albertel 845: } elsif ($target eq 'edit') {
1.343 albertel 846: $result .= $form_tag_start.&problem_edit_header();
1.226 albertel 847: $Apache::lonxml::warnings_error_header=
848: &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 />";
1.159 albertel 849: my $temp=&Apache::edit::insertlist($target,$token);
850: $result.=$temp;
851: } elsif ($target eq 'modified') {
852: $result=$token->[4];
853: } else {
854: # page_start returned a starting result, delete it if we don't need it
855: $result = '';
1.99 sakharuk 856: }
1.159 albertel 857: return $result;
1.9 albertel 858: }
859:
860: sub end_problem {
1.159 albertel 861: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.321 albertel 862: my $result;
1.310 foxr 863:
1.321 albertel 864: if (!$Apache::lonxml::metamode) {
865: $result = &Apache::lonxml::endredirection(); #started in &start_problem
1.329 albertel 866: $Apache::lonxml::post_evaluate=0;
1.321 albertel 867: }
1.319 foxr 868:
869: if ($target eq 'tex') {
1.321 albertel 870: # Figure out the front matter and replace the
871: # INSERTTEXFRONTMATTERHERE in result with it. note that we do
872: # this in end_problem because whether or not we display due
873: # dates depends on whether due dates have already been
874: # displayed in the problem parts.
875:
1.319 foxr 876: my $frontmatter = '';
877: my $startminipage = '';
878: if (not $env{'form.problem_split'}=~/yes/) {
879: $startminipage = '\begin{minipage}{\textwidth}';
880: }
881: my $id = $Apache::inputtags::part;
882: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
883: my $packages=&Apache::lonnet::metadata($env{'request.uri'},'packages');
884: my @packages = split /,/,$packages;
885: my $allow_print_points = 0;
886: foreach my $partial_key (@packages) {
887: if ($partial_key=~m/^part_0$/) {
888: $allow_print_points=1;
889: }
890: }
891: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
892: if (defined($maxtries) && $maxtries < 0) { $allow_print_points=0; }
893: if (lc($env{'course.'.$env{'request.course.id'}.
894: '.disableexampointprint'}) eq 'yes') {
895: $allow_print_points=0;
896: }
897: my $name_of_resourse= &Apache::lonxml::latex_special_symbols(&get_resource_name($parstack,$safeeval),'header');
898: 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 ';
899: my $toc_line='\vskip 1 mm\noindent '.$startminipage.
900: '\addcontentsline{toc}{subsection}{'.$name_of_resourse.'}';
901:
902: # Figure out what the due date is and if we need to print
903: # it in the problem header. We have been logging the
904: # last due date written to file.
905:
906: my $duetime = &Apache::lonnet::EXT("resource.$id.duedate");
907: my $duedate = POSIX::strftime("%c",localtime($duetime));
908: my $temp_file;
909: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
910:
911: # Figure out what the last printed due date is or set it
912: # to the epoch if no duedates have been printed.
913:
914: my $due_file_content = 0; # If the file does not yet exist, time is the epoch.
915: if (-e $filename) {
916: $temp_file = Apache::File->new($filename);
917: my @due_file = <$temp_file>;
918: $due_file_content = $due_file[$#due_file];
919: chomp $due_file_content;
920: }
921:
922: # We display the due date iff it is not the same as the last
923: # duedate in problem header ($due_file_content), and
924: # none of our parts displayed a duedate.
925: #
926: my $parts_with_displayduedate;
927: if (defined $Apache::outputtags::showonce{'displayduedate'}) {
928: $parts_with_displayduedate =
929: scalar(@{$Apache::outputtags::showonce{'displayduedate'}});
930: } else {
931: $parts_with_displayduedate = 0;
932: }
933: if (($due_file_content != $duetime) && ($parts_with_displayduedate == 0) ) {
934: $temp_file = Apache::File->new('>'.$filename);
935: print $temp_file "$duetime\n";
936: if (not $env{'request.symb'} =~ m/\.page_/) {
937: if(not $duedate=~m/1969/ and $Apache::lonhomework::type ne 'exam') {
938: $frontmatter .= $begin_doc.
939: '\textit{Due date: '.$duedate.'} '.$toc_line;
940: } else {
941: $frontmatter.= $begin_doc.$toc_line;
942: if ($Apache::lonhomework::type eq 'exam' and $allow_print_points==1) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
943: }
944: } else {
1.381 albertel 945: $frontmatter .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\'.$startminipage;
1.319 foxr 946: }
947: } else {
948: if (not $env{'request.symb'} =~ m/\.page_/) {
949: $frontmatter .= $begin_doc.$toc_line;
950: if (($Apache::lonhomework::type eq 'exam') and ($allow_print_points==1)) { $frontmatter .= '\fbox{\textit{'.$weight.' pt}}';}
951: } else {
1.381 albertel 952: $frontmatter .= '\vskip 1mm \\\\\\\\'.$startminipage;
1.319 foxr 953: }
954: }
955: $result =~ s/INSERTTEXFRONTMATTERHERE/$frontmatter/;
956: }
957:
1.159 albertel 958: my $status=$Apache::inputtags::status['-1'];
959: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
960: $target eq 'tex') {
1.249 albertel 961: if ( $target eq 'grade' && $Apache::inputtags::part eq '0') {
1.159 albertel 962: # if part is zero, no <part>s existed, so we need to the grading
1.249 albertel 963: if ($status eq 'CAN_ANSWER' ||$Apache::lonhomework::scantronmode) {
964: &Apache::inputtags::grade;
1.324 albertel 965: } elsif ($status eq 'NEEDS_CHECKIN') {
966: # no need to grade, and don't want to hide data
1.249 albertel 967: } else {
968: # move any submission data to .hidden
969: &Apache::inputtags::hidealldata($Apache::inputtags::part);
970: }
1.159 albertel 971: } elsif ( ($target eq 'web' || $target eq 'tex') &&
972: $Apache::inputtags::part eq '0' &&
1.252 albertel 973: $status ne 'UNCHECKEDOUT' && $status ne 'NOT_YET_VIEWED') {
1.159 albertel 974: # if part is zero, no <part>s existed, so we need show the current
975: # grading status
976: my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target);
977: $result.= $gradestatus;
978: }
979: if (
1.284 albertel 980: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.159 albertel 981: ($target eq 'answer') || ($target eq 'tex')
982: ) {
1.227 albertel 983: if ($target ne 'tex' &&
1.284 albertel 984: $env{'form.answer_output_mode'} ne 'tex') {
1.254 www 985: $result.="</form>";
1.348 albertel 986: $result.= &Apache::lonhtmlcommon::htmlareaselectactive(&Apache::lonhtmlcommon::get_htmlareafields());
1.159 albertel 987: }
988: if ($target eq 'web') {
1.346 albertel 989: $result.= &Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 990: } elsif ($target eq 'tex') {
1.178 sakharuk 991: my $endminipage = '';
1.284 albertel 992: if (not $env{'form.problem_split'}=~/yes/) {
1.178 sakharuk 993: $endminipage = '\end{minipage}';
994: }
1.284 albertel 995: if ($env{'form.print_discussions'} eq 'yes') {
1.263 sakharuk 996: $result.=&Apache::lonxml::xmlend($target,$parser);
1.159 albertel 997: } else {
1.262 sakharuk 998: $result .= '\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}';
1.284 albertel 999: if (not $env{'request.symb'} =~ m/\.page_/) {
1.262 sakharuk 1000: $result .= $endminipage.'\end{document} ';
1001: } else {
1.382 albertel 1002: $result .= $endminipage;
1.262 sakharuk 1003: }
1.159 albertel 1004: }
1005: }
1006: }
1007: if ($target eq 'grade') {
1008: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
1009: &finalize_storage();
1010: }
1.284 albertel 1011: if ($target eq 'answer' && ($env{'request.state'} eq 'construct')
1012: && $env{'form.answer_output_mode'} ne 'tex') {
1.346 albertel 1013: $result.=&Apache::loncommon::end_page({'discussion' => 1});
1.294 albertel 1014: # normally we get it from above, but in CSTR
1.172 albertel 1015: # we always show answer mode too.
1.159 albertel 1016: }
1017: } elsif ($target eq 'meta') {
1018: if ($Apache::inputtags::part eq '0') {
1.179 albertel 1019: @Apache::inputtags::response=();
1.159 albertel 1020: $result=&Apache::response::mandatory_part_meta;
1021: }
1.215 albertel 1022: $result.=&Apache::response::meta_part_order();
1.258 albertel 1023: $result.=&Apache::response::meta_response_order();
1.159 albertel 1024: } elsif ($target eq 'edit') {
1025: &Apache::lonxml::debug("in end_problem with $target, edit");
1.314 albertel 1026: $result .= &problem_edit_footer();
1.320 albertel 1027: } elsif ($target eq 'modified') {
1028: $result .= $token->[2];
1.159 albertel 1029: }
1.155 albertel 1030:
1.284 albertel 1031: if ($env{'request.state'} eq 'construct' && $target eq 'web') {
1.177 albertel 1032: &Apache::inputtags::check_for_duplicate_ids();
1033: }
1.204 albertel 1034:
1035: &reset_problem_globals('problem');
1.159 albertel 1036:
1037: return $result;
1.48 albertel 1038: }
1039:
1.108 albertel 1040:
1.48 albertel 1041: sub start_library {
1.159 albertel 1042: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.343 albertel 1043: my ($result,$form_tag_start);
1.371 albertel 1044: if ($#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1.244 albertel 1045: &init_problem_globals('library');
1046: $Apache::lonhomework::type='problem';
1047: }
1.159 albertel 1048: if ($target eq 'edit') {
1.343 albertel 1049: ($result,$form_tag_start)=
1050: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1051: 'Edit');
1052: $result.=$form_tag_start.&problem_edit_header();
1.159 albertel 1053: my $temp=&Apache::edit::insertlist($target,$token);
1054: $result.=$temp;
1055: } elsif ($target eq 'modified') {
1056: $result=$token->[4];
1.340 albertel 1057: } elsif (($target eq 'web' || $target eq 'webgrade')
1.371 albertel 1058: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1.340 albertel 1059: && $env{'request.state'} eq "construct" ) {
1.159 albertel 1060: my $name=&get_resource_name($parstack,$safeeval);
1.343 albertel 1061: ($result,$form_tag_start)=
1062: &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval,
1063: $name);
1.159 albertel 1064: my $rndseed=&setup_rndseed($safeeval);
1.343 albertel 1065: $result.=" \n $form_tag_start".
1.159 albertel 1066: '<input type="hidden" name="submitted" value="yes" />';
1067: $result.=&problem_web_to_edit_header($rndseed);
1068: }
1069: return $result;
1.48 albertel 1070: }
1071:
1072: sub end_library {
1.159 albertel 1073: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1074: my $result='';
1075: if ($target eq 'edit') {
1076: $result=&problem_edit_footer();
1.371 albertel 1077: } elsif ($target eq 'web'
1078: && ($#$tagstack eq 0 && $$tagstack[0] eq 'library')
1079: && $env{'request.state'} eq "construct") {
1.349 albertel 1080: $result.='</form>'.&Apache::loncommon::end_page({'discussion' => 1});
1.159 albertel 1081: }
1.371 albertel 1082: if ( $#$tagstack eq 0 && $$tagstack[0] eq 'library') {
1083: &reset_problem_globals('library');
1084: }
1.159 albertel 1085: return $result;
1.197 www 1086: }
1087:
1088: sub start_definetag {
1.326 albertel 1089: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.197 www 1090:
1091: my $result;
1092:
1093: my $name = $token->[2]->{'name'};
1.326 albertel 1094: my $skip=&Apache::lonxml::get_all_text("/definetag",$parser,$style);
1.396 albertel 1095: if ($target eq 'web') {
1096: if ($name=~/^\//) {
1097: $result=
1098: '<br /><table class="LC_sty_end"><tr><th>'.
1099: &mt('END [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1100: } else {
1101: $result=
1102: '<br /><table class="LC_sty_begin"><tr><th>'.
1103: &mt('BEGIN [_1]'.'<tt>'.$name.'</tt>').'</th></tr>';
1104: }
1105: $skip = &HTML::Entities::encode($skip, '<>&"');
1106: $result.='<tr><td><pre>'.$skip.'</pre></td></tr></table>';
1.197 www 1107: }
1108: return $result;
1109: }
1110:
1111: sub end_definetag {
1112: return '';
1.1 albertel 1113: }
1114:
1115: sub start_block {
1.201 albertel 1116: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.131 albertel 1117:
1118: my $result;
1.1 albertel 1119:
1.339 albertel 1120: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1121: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.159 albertel 1122: my $code = $token->[2]->{'condition'};
1.385 albertel 1123: if (defined($code) && $code ne '') {
1.137 albertel 1124: if (!$Apache::lonxml::default_homework_loaded) {
1125: &Apache::lonxml::default_homework_load($safeeval);
1126: }
1.131 albertel 1127: $result = &Apache::run::run($code,$safeeval);
1128: &Apache::lonxml::debug("block :$code: returned :$result:");
1129: } else {
1130: $result='1';
1131: }
1132: if ( ! $result ) {
1.201 albertel 1133: my $skip=&Apache::lonxml::get_all_text("/block",$parser,$style);
1.131 albertel 1134: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1135: }
1136: $result='';
1137: } elsif ($target eq 'edit') {
1138: $result .=&Apache::edit::tag_start($target,$token);
1139: $result .=&Apache::edit::text_arg('Test Condition:','condition',
1140: $token,40);
1141: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1142: } elsif ($target eq 'modified') {
1143: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1144: $safeeval,'condition');
1145: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.38 albertel 1146: }
1.131 albertel 1147: return $result;
1.1 albertel 1148: }
1149:
1150: sub end_block {
1.167 www 1151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1152: my $result;
1153: if ($target eq "edit") {
1154: $result.= &Apache::edit::tag_end($target,$token,'');
1155: }
1156: return $result;
1157: }
1158:
1159: sub start_languageblock {
1.201 albertel 1160: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.167 www 1161:
1162: my $result;
1163:
1.339 albertel 1164: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1165: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.201 albertel 1166: my $include = $token->[2]->{'include'};
1167: my $exclude = $token->[2]->{'exclude'};
1.398 www 1168: my @preferred_languages=&Apache::loncommon::preferred_languages();
1.394 www 1169: # This should not even happen, since we should at least have the server language
1.398 www 1170: if (!$preferred_languages[0]) { $preferred_languages[0]='en'; }
1171: # Now loop over all languages in order of preference
1172: foreach my $preferred_language (@preferred_languages) {
1.394 www 1173: # If the languageblock has no arguments, show the contents
1.399 www 1174: $result=1;
1175: my $found=0;
1.394 www 1176: # Do we have an include argument?
1.398 www 1177: if ($include) {
1.394 www 1178: # If include is specified, by default, don't render the block
1.399 www 1179: $result=0;
1.398 www 1180: foreach my $included_language (split(/\,/,$include)) {
1.394 www 1181: # ... but if my preferred language is included, render it
1.398 www 1182: if ($included_language eq $preferred_language) {
1.399 www 1183: $result=1;
1184: $found=1;
1.398 www 1185: }
1186: }
1187: }
1.394 www 1188: # Do we have an exclude argument?
1.398 www 1189: if ($exclude) {
1.399 www 1190: $result=1;
1.398 www 1191: foreach my $excluded_language (split(/\,/,$exclude)) {
1192: if ($excluded_language eq $preferred_language) {
1.399 www 1193: $result=0;
1194: $found=1;
1.398 www 1195: }
1196: }
1197: }
1.399 www 1198: if ($found) { last; }
1.398 www 1199: }
1.201 albertel 1200: if ( ! $result ) {
1201: my $skip=&Apache::lonxml::get_all_text("/languageblock",$parser,
1202: $style);
1203: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1204: }
1205: $result='';
1.167 www 1206: } elsif ($target eq 'edit') {
1207: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1208: $result .=&Apache::edit::text_arg(&mt('Include Language:'),'include',
1.167 www 1209: $token,40);
1.211 albertel 1210: $result .=&Apache::edit::text_arg(&mt('Exclude Language:'),'exclude',
1.167 www 1211: $token,40);
1212: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1213: } elsif ($target eq 'modified') {
1214: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.168 albertel 1215: $safeeval,'include',
1216: 'exclude');
1.167 www 1217: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1218: }
1219: return $result;
1220: }
1221:
1222: sub end_languageblock {
1.170 www 1223: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1224: my $result;
1.201 albertel 1225: if ($target eq "edit") {
1.170 www 1226: $result.= &Apache::edit::tag_end($target,$token,'');
1227: }
1228: return $result;
1229: }
1230:
1.397 albertel 1231: {
1232: my %available_texts;
1233: sub start_translated {
1234: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1235: &Apache::lonxml::register('Apache::structuretags',('lang'));
1236: undef(%available_texts);
1237: }
1238:
1239: sub end_translated {
1240: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1241: my $result;
1242: #show the translation on viewable targets
1243: if ($target eq 'web' || $target eq 'tex' || $target eq 'webgrade'||
1244: # or non-viewable targets, if it's embedded in something that
1245: # wants the output
1246: (($target eq 'answer' || $target eq 'analyze'|| $target eq 'grade')
1247: && &Apache::lonxml::in_redirection() ) ) {
1248: my @possibilities = keys(%available_texts);
1249: my $which =
1250: &Apache::loncommon::languages(\@possibilities) || 'default';
1251: $result = $available_texts{$which};
1252: }
1253: undef(%available_texts);
1254: &Apache::lonxml::deregister('Apache::structuretags',('lang'));
1255: return $result;
1256: }
1257:
1258:
1259: sub start_lang {
1260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1261: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1262: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1263: &Apache::lonxml::startredirection();
1264: }
1265: return '';
1266: }
1267:
1268: sub end_lang {
1269: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1270: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1271: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1272: my $result = &Apache::lonxml::endredirection();
1273: my $which = &Apache::lonxml::get_param('which',$parstack,
1274: $safeeval);
1275: $available_texts{$which} = $result;
1276: }
1277: return '';
1278: }
1279: }
1280:
1.170 www 1281: sub start_instructorcomment {
1.201 albertel 1282: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.170 www 1283:
1284: my $result;
1285:
1.339 albertel 1286: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1287: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.284 albertel 1288: $result=($env{'request.role'}=~/^(in|cc|au|ca|li)/);
1289: if ( (! $result) or ($env{'form.instructor_comments'} eq 'hide')) {
1.201 albertel 1290: my $skip=&Apache::lonxml::get_all_text("/instructorcomment",
1291: $parser,$style);
1.170 www 1292: &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]");
1293: }
1294: $result='';
1295: } elsif ($target eq 'edit') {
1296: $result .=&Apache::edit::tag_start($target,$token);
1297: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1298: }
1299: return $result;
1300: }
1301:
1302: sub end_instructorcomment {
1.159 albertel 1303: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1304: my $result;
1305: if ($target eq "edit") {
1306: $result.= &Apache::edit::tag_end($target,$token,'');
1307: }
1308: return $result;
1.4 tsai 1309: }
1310:
1311: sub start_while {
1.326 albertel 1312: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1313:
1.160 albertel 1314: my $result;
1.339 albertel 1315: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1316: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1317: my $code = $token->[2]->{'condition'};
1.4 tsai 1318:
1.160 albertel 1319: push( @Apache::structuretags::whileconds, $code);
1320: if (!$Apache::lonxml::default_homework_loaded) {
1321: &Apache::lonxml::default_homework_load($safeeval);
1322: }
1323: my $result = &Apache::run::run($code,$safeeval);
1.326 albertel 1324: my $bodytext=&Apache::lonxml::get_all_text("/while",$parser,$style);
1.160 albertel 1325: push( @Apache::structuretags::whilebody, $bodytext);
1.161 albertel 1326: push( @Apache::structuretags::whileline, $token->[5]);
1327: &Apache::lonxml::debug("s code $code got -$result-");
1.160 albertel 1328: if ( $result ) {
1329: &Apache::lonxml::newparser($parser,\$bodytext);
1330: }
1331: } elsif ($target eq 'edit') {
1332: $result .=&Apache::edit::tag_start($target,$token);
1.211 albertel 1333: $result .=&Apache::edit::text_arg(&mt('Test Condition:'),'condition',
1.160 albertel 1334: $token,40);
1335: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1336: } elsif ($target eq 'modified') {
1337: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1338: $safeeval,'condition');
1339: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1.159 albertel 1340: }
1.160 albertel 1341: return $result;
1.4 tsai 1342: }
1343:
1344: sub end_while {
1.159 albertel 1345: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.160 albertel 1346: my $result;
1347:
1.339 albertel 1348: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1349: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.160 albertel 1350: my $code = pop(@Apache::structuretags::whileconds);
1351: my $bodytext = pop(@Apache::structuretags::whilebody);
1.161 albertel 1352: my $line = pop(@Apache::structuretags::whileline);
1353: my $return = &Apache::run::run($code,$safeeval);
1354: my $starttime=time;
1355: my $error=0;
1356: while ($return) {
1357: if (time-$starttime >
1358: $Apache::lonnet::perlvar{'lonScriptTimeout'}) {
1.378 albertel 1359: $return = 0; $error=1; next;
1.161 albertel 1360: }
1361: $result.=&Apache::scripttag::xmlparse($bodytext);
1.380 albertel 1362: if ($target eq 'grade' || $target eq 'answer' ||
1363: $target eq 'analyze') {
1364: # grade/answer/analyze should produce no output but if we
1365: # are redirecting, the redirecter should know what to do
1366: # with the output
1367: if (!$Apache::lonxml::redirection) { undef($result); }
1368: }
1.161 albertel 1369: $return = &Apache::run::run($code,$safeeval);
1370: }
1371: if ($error) {
1.270 albertel 1372: &Apache::lonxml::error('<pre>'.&mt('Code ran too long. It ran for more than').' '.$Apache::lonnet::perlvar{'lonScriptTimeout'}.' '.&mt('seconds occured while running <while> on line').' '.$line.'</pre>');
1.160 albertel 1373: }
1374: } elsif ($target eq "edit") {
1375: $result.= &Apache::edit::tag_end($target,$token,'');
1.159 albertel 1376: }
1.160 albertel 1377: return $result;
1.1 albertel 1378: }
1.6 tsai 1379:
1.160 albertel 1380: # <randomlist show="1">
1.6 tsai 1381: # <tag1>..</tag1>
1382: # <tag2>..</tag2>
1383: # <tag3>..</tag3>
1.160 albertel 1384: # ...
1.6 tsai 1385: # </randomlist>
1386: sub start_randomlist {
1.326 albertel 1387: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1388: my $result;
1.339 albertel 1389: if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' ||
1390: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.331 albertel 1391: my $body= &Apache::lonxml::get_all_text("/randomlist",$parser);
1.305 albertel 1392: my $b_parser= HTML::LCParser->new(\$body);
1393: $b_parser->xml_mode(1);
1394: $b_parser->marked_sections(1);
1.159 albertel 1395: my $b_tok;
1396: my @randomlist;
1397: my $list_item;
1398: while($b_tok = $b_parser->get_token() ) {
1399: if($b_tok->[0] eq 'S') { # start tag
1400: # get content of the tag until matching end tag
1401: # get all text upto the matching tag
1402: # and push the content into @randomlist
1403: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],
1404: $b_parser);
1405: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1406: push(@randomlist,$list_item);
1407: # print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4],
1408: # $list_item</b>";
1409: }
1410: if($b_tok->[0] eq 'T') { # text
1411: # what to do with text in between tags?
1412: # print "<b>TEXT $b_tok->[1]</b><br />";
1413: }
1414: # if($b_tok->[0] eq 'E') { # end tag, should not happen
1415: # print "<b>END-TAG $b_tok->[1]</b><br />";
1416: # }
1417: }
1.303 albertel 1418: if (@randomlist) {
1419: my @idx_arr = (0 .. $#randomlist);
1420: &Apache::structuretags::shuffle(\@idx_arr);
1421: my $bodytext = '';
1422: my $show=$#randomlist;
1423: my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval);
1424: $showarg--;
1425: if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; }
1426: for(0 .. $show) {
1427: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
1428: }
1429: &Apache::lonxml::newparser($parser,\$bodytext);
1.159 albertel 1430: }
1431: } elsif ($target eq 'edit' ) {
1432: $result .=&Apache::edit::tag_start($target,$token);
1433: $result .=&Apache::edit::text_arg('Maximum Tags to Show:','show',
1434: $token,5);
1435: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1436: } elsif ($target eq 'modified' ) {
1437: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1438: $safeeval,'show');
1439: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1440: }
1441: return $result;
1.7 tsai 1442: }
1443:
1444: sub shuffle {
1445: my $a=shift;
1446: my $i;
1.303 albertel 1447: if (ref($a) eq 'ARRAY' && @$a) {
1.251 albertel 1448: &Apache::response::pushrandomnumber();
1.159 albertel 1449: for($i=@$a;--$i;) {
1450: my $j=int(&Math::Random::random_uniform() * ($i+1));
1451: next if $i == $j;
1452: @$a[$i,$j] = @$a[$j,$i];
1453: }
1.251 albertel 1454: &Apache::response::poprandomnumber();
1.7 tsai 1455: }
1.6 tsai 1456: }
1457:
1458: sub end_randomlist {
1.159 albertel 1459: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1460: my $result;
1461: if ($target eq 'edit' ) {
1462: $result=&Apache::edit::tag_end($target,$token,
1463: 'End Randomly Parsed Block');
1464: }
1465: return $result;
1.6 tsai 1466: }
1467:
1.283 albertel 1468: sub ordered_show_check {
1469: my $last_part=$Apache::inputtags::partlist[-2];
1470: my $in_order=
1471: &Apache::lonnet::EXT('resource.'.$Apache::inputtags::part.'.ordered');
1472: my $in_order_show=1;
1473: if ($last_part ne '0' && lc($in_order) eq 'yes') {
1474: $in_order_show=&Apache::response::check_status($last_part);
1475: }
1476: return $in_order_show;
1477: }
1478:
1.11 albertel 1479: sub start_part {
1.326 albertel 1480: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.321 albertel 1481: if (!$Apache::lonxml::metamode) {
1482: &Apache::lonxml::startredirection(); # we'll use redirection to fix up
1483: # duedates.
1484: }
1.159 albertel 1485: my $result='';
1.386 albertel 1486: my $id= &Apache::lonxml::get_id($parstack,$safeeval);
1.159 albertel 1487: $Apache::inputtags::part=$id;
1.177 albertel 1488: push(@Apache::inputtags::partlist,$id);
1489: @Apache::inputtags::response=();
1.159 albertel 1490: @Apache::inputtags::previous=();
1491: @Apache::inputtags::previous_version=();
1.405 ! albertel 1492: &Apache::lonhomework::set_show_problem_status(&get_problem_status($id));
1.403 albertel 1493: &Apache::response::reset_params();
1494:
1.159 albertel 1495: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.259 albertel 1496: my $newtype=&Apache::lonnet::EXT("resource.$id.type");
1497: if ($newtype) { $Apache::lonhomework::type=$newtype; }
1.283 albertel 1498: my $in_order_show=&ordered_show_check();
1.214 albertel 1499: my $expression='$external::part=\''.$Apache::inputtags::part.'\';';
1.259 albertel 1500: $expression.='$external::type=\''.$Apache::lonhomework::type.'\';';
1.209 albertel 1501: &Apache::run::run($expression,$safeeval);
1.159 albertel 1502:
1503: if ($target eq 'meta') {
1.224 www 1504: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
1505: return &Apache::response::mandatory_part_meta.
1506: &Apache::response::meta_parameter_write('display','string',$display,'Part Description');
1.159 albertel 1507: } elsif ($target eq 'web' || $target eq 'grade' ||
1508: $target eq 'answer' || $target eq 'tex') {
1.283 albertel 1509: if ($hidden || !$in_order_show) {
1.326 albertel 1510: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,$style);
1.159 albertel 1511: } else {
1512: my ($status,$accessmsg) = &Apache::lonhomework::check_access($id);
1513: push (@Apache::inputtags::status,$status);
1514: my $expression='$external::datestatus="'.$status.'";';
1515: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";';
1516: &Apache::run::run($expression,$safeeval);
1.284 albertel 1517: if ($env{'request.state'} eq 'construct') {
1.241 albertel 1518: &set_problem_state($Apache::inputtags::part);
1.240 albertel 1519: }
1.216 albertel 1520: if (( $status eq 'CLOSED' ) ||
1521: ( $status eq 'UNCHECKEDOUT') ||
1.252 albertel 1522: ( $status eq 'NOT_YET_VIEWED') ||
1.216 albertel 1523: ( $status eq 'BANNED') ||
1524: ( $status eq 'UNAVAILABLE') ||
1525: ( $status eq 'INVALID_ACCESS')) {
1.326 albertel 1526: my $bodytext=&Apache::lonxml::get_all_text("/part",$parser,
1527: $style);
1.159 albertel 1528: if ( $target eq "web" ) {
1.211 albertel 1529: $result="<br />".&mt('Part is not open to be viewed. It')." $accessmsg<br />";
1.159 albertel 1530: } elsif ( $target eq 'tex' ) {
1.284 albertel 1531: if (not $env{'form.problem_split'}=~/yes/) {
1.211 albertel 1532: $result="\\end{minipage}\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\\\begin{minipage}{\\textwidth}";
1.195 sakharuk 1533: } else {
1.211 albertel 1534: $result="\\vskip 0 mm ".&mt('Part is not open to be viewed. It')." $accessmsg \\\\";
1.195 sakharuk 1535: }
1.159 albertel 1536: }
1537: } else {
1538: if ($target eq 'tex') {
1.284 albertel 1539: if (not $env{'form.problem_split'}=~/yes/) {
1.264 sakharuk 1540: if ($$tagstack[-2] eq 'td') {
1.388 foxr 1541: $result.='\noindent \begin{minipage}{\textwidth}\noindent';
1.264 sakharuk 1542: } else {
1543: $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent';
1544: }
1.195 sakharuk 1545: }
1.159 albertel 1546: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.284 albertel 1547: my $allkeys=&Apache::lonnet::metadata($env{'request.uri'},'packages');
1.222 sakharuk 1548: my @allkeys = split /,/,$allkeys;
1549: my $allow_print_points = 0;
1550: foreach my $partial_key (@allkeys) {
1.230 albertel 1551: if ($partial_key=~m/^part_(.*)$/) {
1.222 sakharuk 1552: if ($1 ne '0') {$allow_print_points=1;}
1553: }
1554: }
1.275 albertel 1555: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
1556: if (defined($maxtries) && $maxtries < 0) {
1557: $allow_print_points=0;
1558: }
1.302 albertel 1559: if (lc($env{'course.'.$env{'request.course.id'}.
1560: '.disableexampointprint'}) eq 'yes') {
1561: $allow_print_points=0;
1562: }
1.222 sakharuk 1563: if (($Apache::lonhomework::type eq 'exam') && ($allow_print_points)) { $result .= '\fbox{\textit{'.$weight.' pt}}';}
1.233 www 1564: } elsif ($target eq 'web') {
1.356 www 1565: $result.='<a name="'.&escape($Apache::inputtags::part).'" />';
1.159 albertel 1566: }
1567: }
1568: }
1569: } elsif ($target eq 'edit') {
1570: $result.=&Apache::edit::tag_start($target,$token);
1571: $result.=&Apache::edit::text_arg('Part ID:','id',$token).
1572: &Apache::loncommon::help_open_topic("Part_Tag_Edit_Help").
1.224 www 1573: ' '.
1574: &Apache::edit::text_arg('Displayed Part Description:','display',$token).
1.159 albertel 1575: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
1576: } elsif ($target eq 'modified') {
1577: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.225 albertel 1578: $safeeval,'id','display');
1.159 albertel 1579: if ($constructtag) {
1.225 albertel 1580: #limiting ids to only letters numbers, and space
1.224 www 1581: $token->[2]->{'id'}=~s/[^A-Za-z0-9 ]//gs;
1.159 albertel 1582: $result = &Apache::edit::rebuild_tag($token);
1583: }
1584: }
1585: return $result;
1.11 albertel 1586: }
1587:
1588: sub end_part {
1.159 albertel 1589: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1590: &Apache::lonxml::debug("in end_part $target ");
1591: my $status=$Apache::inputtags::status['-1'];
1592: my $hidden=&Apache::loncommon::check_if_partid_hidden($Apache::inputtags::part);
1.283 albertel 1593: my $in_order_show=&ordered_show_check();
1.321 albertel 1594: my $result;
1595: if (!$Apache::lonxml::metamode) {
1596: $result = &Apache::lonxml::endredirection(); # started in &start_part
1.329 albertel 1597: $Apache::lonxml::post_evaluate=0;
1.321 albertel 1598: }
1.312 albertel 1599: if ($target eq 'grade') {
1.249 albertel 1600: if (($status eq 'CAN_ANSWER' || $Apache::lonhomework::scantronmode) &&
1.283 albertel 1601: !$hidden && $in_order_show) {
1.311 foxr 1602: $result.=&Apache::inputtags::grade;
1.249 albertel 1603: } else {
1604: # move any submission data to .hidden
1605: &Apache::inputtags::hidealldata($Apache::inputtags::part);
1606: }
1.283 albertel 1607: } elsif (($target eq 'web' || $target eq 'tex') &&
1608: !$hidden && $in_order_show) {
1.159 albertel 1609: my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,
1610: $target);
1.212 albertel 1611: if ($Apache::lonhomework::type eq 'exam' && $target eq 'tex') {
1612: $gradestatus='';
1613: }
1.311 foxr 1614: $result.=$gradestatus;
1.265 sakharuk 1615: if ($$tagstack[-2] eq 'td' and $target eq 'tex') {$result.='\end{minipage}';}
1.181 albertel 1616: } elsif ($target eq 'edit') {
1.311 foxr 1617: $result.=&Apache::edit::end_table();
1.322 albertel 1618: } elsif ($target eq 'modified') {
1619: $result .= $token->[2];
1.159 albertel 1620: }
1621: pop @Apache::inputtags::status;
1622: $Apache::inputtags::part='';
1.295 albertel 1623: $Apache::lonhomework::type = $Apache::lonhomework::default_type;
1.159 albertel 1624: return $result;
1.11 albertel 1625: }
1.1 albertel 1626:
1.25 albertel 1627: sub start_preduedate {
1.326 albertel 1628: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.339 albertel 1629: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1630: $target eq 'tex' || $target eq 'webgrade') {
1.236 albertel 1631: &Apache::lonxml::debug("State in preduedate is ". $Apache::inputtags::status['-1']);
1.300 albertel 1632: if (!$Apache::lonhomework::scantronmode &&
1633: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
1.236 albertel 1634: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
1635: &Apache::lonxml::debug("Wha? ". ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER'));
1.326 albertel 1636: &Apache::lonxml::get_all_text("/preduedate",$parser,$style);
1.159 albertel 1637: }
1.24 albertel 1638: }
1.159 albertel 1639: return '';
1.24 albertel 1640: }
1641:
1.25 albertel 1642: sub end_preduedate {
1.159 albertel 1643: return '';
1.24 albertel 1644: }
1645:
1.369 foxr 1646: # In all the modes where <postanswerdate> text is
1647: # displayable, all we do is eat up the text between the start/stop
1648: # tags if the conditions are not right to display it.
1.25 albertel 1649: sub start_postanswerdate {
1.326 albertel 1650: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.370 foxr 1651: my $pav = &Apache::lonnet::allowed('pav', $env{'request.course.id'}) ||
1652: &Apache::lonnet::allowed('pav',
1653: $env{'request.course.id'}.'/'.$env{'request.course.sec'});
1.369 foxr 1654: if ($target eq 'web' || $target eq 'grade' || $target eq 'webgrade' ||
1.370 foxr 1655: $target eq 'tex' ) {
1.300 albertel 1656: if ($Apache::lonhomework::scantronmode ||
1.370 foxr 1657: $Apache::inputtags::status['-1'] ne 'SHOW_ANSWER' ||
1658: (($target eq 'tex') && !$pav)) {
1.326 albertel 1659: &Apache::lonxml::get_all_text("/postanswerdate",$parser,$style);
1.159 albertel 1660: }
1661: }
1662: return '';
1.24 albertel 1663: }
1664:
1.25 albertel 1665: sub end_postanswerdate {
1.159 albertel 1666: return '';
1.24 albertel 1667: }
1668:
1.25 albertel 1669: sub start_notsolved {
1.326 albertel 1670: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1671: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1.339 albertel 1672: $target eq 'tex' || $target eq 'webgrade') {
1.159 albertel 1673: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1674: &Apache::lonxml::debug("not solved has :$gradestatus:");
1.239 albertel 1675: if ($gradestatus =~ /^correct/ &&
1676: &Apache::response::show_answer()) {
1.159 albertel 1677: &Apache::lonxml::debug("skipping");
1.326 albertel 1678: &Apache::lonxml::get_all_text("/notsolved",$parser,$style);
1.159 albertel 1679: }
1.24 albertel 1680: }
1.159 albertel 1681: return '';
1.24 albertel 1682: }
1683:
1.25 albertel 1684: sub end_notsolved {
1.159 albertel 1685: return '';
1.24 albertel 1686: }
1687:
1688: sub start_solved {
1.326 albertel 1689: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1690: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1691: $target eq 'tex') {
1692: my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
1.239 albertel 1693: if ($gradestatus !~ /^correct/ ||
1694: !&Apache::response::show_answer()) {
1.326 albertel 1695: &Apache::lonxml::get_all_text("/solved",$parser,$style);
1.159 albertel 1696: }
1.24 albertel 1697: }
1.159 albertel 1698: return '';
1.24 albertel 1699: }
1700:
1701: sub end_solved {
1.248 albertel 1702: return '';
1703: }
1704:
1705: sub start_problemtype {
1.326 albertel 1706: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.248 albertel 1707: my $result;
1.339 albertel 1708: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
1709: $target eq 'tex' || $target eq 'analyze' || $target eq 'webgrade') {
1.248 albertel 1710: my $mode=lc(&Apache::lonxml::get_param('mode',$parstack,$safeeval));
1711: if (!defined($mode)) { $mode='show'; }
1712: my $for=&Apache::lonxml::get_param('for',$parstack,$safeeval);
1713: my $found=0;
1714: foreach my $type (split(',',$for)) {
1715: if ($Apache::lonhomework::type eq lc($type)) { $found=1; }
1716: }
1717: if ($mode eq 'show' && !$found) {
1.326 albertel 1718: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 1719: }
1720: if ($mode eq 'hide' && $found) {
1.326 albertel 1721: &Apache::lonxml::get_all_text("/problemtype",$parser,$style);
1.248 albertel 1722: }
1723: } elsif ($target eq 'edit') {
1724: $result .=&Apache::edit::tag_start($target,$token);
1725: $result.=&Apache::edit::select_arg('Mode:','mode',
1726: [['show','Show'],
1727: ['hide','Hide']]
1728: ,$token);
1729: $result .=&Apache::edit::checked_arg('When used as type(s):','for',
1730: [ ['exam','Exam/Quiz Problem'],
1731: ['survey','Survey'],
1732: ['problem','Homework Problem'] ]
1733: ,$token);
1734: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1735: } elsif ($target eq 'modified') {
1736: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1737: $safeeval,'mode','for');
1738: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1739: }
1740: return $result;
1741: }
1742:
1743: sub end_problemtype {
1.159 albertel 1744: return '';
1.24 albertel 1745: }
1.34 albertel 1746:
1747: sub start_startouttext {
1.159 albertel 1748: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1749: my @result=(''.'');
1750: if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); }
1.404 albertel 1751:
1752: my $nesting =
1753: &Apache::lonxml::set_state('outtext',
1754: &Apache::lonxml::get_state('outtext')+1);
1755: if ($nesting > 1 && $env{'request.state'} eq 'construct') {
1756: &Apache::lonxml::error("Nesting of <startouttext /> not allowed, on line ".$token->[5]);
1757: }
1.159 albertel 1758: return (@result);
1.34 albertel 1759: }
1.159 albertel 1760:
1.34 albertel 1761: sub end_startouttext {
1.326 albertel 1762: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.159 albertel 1763: my $result='';
1764: my $text='';
1765:
1766: if ($target eq 'edit') {
1.326 albertel 1767: $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.211 albertel 1768: $result.=&Apache::edit::start_table($token)."<tr><td>".&mt('Text Block')."</td>
1769: <td>".&mt('Delete:').
1.159 albertel 1770: &Apache::edit::deletelist($target,$token)
1771: ."</td>
1.42 albertel 1772: <td>".
1.159 albertel 1773: &Apache::edit::insertlist($target,$token).
1.362 albertel 1774: '</td><td align="right" valign="top">' .
1775: &Apache::loncommon::helpLatexCheatsheet().
1.159 albertel 1776: &Apache::edit::end_row().
1.362 albertel 1777: &Apache::edit::start_spanning_row()."\n".
1.255 www 1778: &Apache::edit::editfield($token->[1],$text,"",80,8,1);
1.159 albertel 1779: }
1780: if ($target eq 'modified') {
1.219 albertel 1781: $result='<startouttext />'.&Apache::edit::modifiedfield("endouttext",$parser);
1.159 albertel 1782: }
1783: if ($target eq 'tex') {
1784: $result .= '\noindent ';
1785: }
1786: return $result;
1.34 albertel 1787: }
1.159 albertel 1788:
1.34 albertel 1789: sub start_endouttext {
1.159 albertel 1790: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1791: my $result='';
1792: if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; }
1793: if ($target eq "modified") {
1794: $result='<endouttext />'.
1.377 albertel 1795: &Apache::edit::handle_insertafter('startouttext');
1796: }
1.404 albertel 1797:
1798: my $nesting =
1799: &Apache::lonxml::set_state('outtext',
1800: &Apache::lonxml::get_state('outtext')-1);
1801: if ($nesting < 0 && $env{'request.state'} eq 'construct') {
1802: &Apache::lonxml::error(" Extraneous <endouttext /> not allowed on line ".$token->[5]);
1803: &Apache::lonxml::set_state('outtext', 0);
1804: }
1.159 albertel 1805: return $result;
1.34 albertel 1806: }
1.159 albertel 1807:
1.34 albertel 1808: sub end_endouttext {
1.159 albertel 1809: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1810: my @result=('','');
1811: if ($target eq "edit" || $target eq 'modified') { @result=('','no'); }
1812: return (@result);
1.34 albertel 1813: }
1.159 albertel 1814:
1.45 albertel 1815: sub delete_startouttext {
1.326 albertel 1816: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1817: # my $text=&Apache::lonxml::get_all_text("endouttext",$parser,$style);
1.159 albertel 1818: my $text=$$parser['-1']->get_text("/endouttext");
1819: my $ntoken=$$parser['-1']->get_token();
1820: &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext");
1821: &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken);
1822: # Deleting 2 parallel tag pairs, but we need the numbers later to look like
1823: # they did the last time round
1824: &Apache::lonxml::increasedepth($ntoken);
1825: &Apache::lonxml::decreasedepth($ntoken);
1826: return 1;
1.193 www 1827: }
1828:
1829: sub start_simpleeditbutton {
1830: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1831: my $result='';
1.284 albertel 1832: if (($env{'form.simple_edit_button'} ne 'off') &&
1.273 albertel 1833: ($target eq 'web') &&
1.330 albertel 1834: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.284 albertel 1835: my $url=$env{'request.noversionuri'};
1.193 www 1836: $url=~s/\?.*$//;
1.367 albertel 1837: my ($symb) = &Apache::lonnet::whichuser();
1.194 www 1838: $result='<table width="100%" bgcolor="#FFFFAA" border="2"><tr><td>'.
1.356 www 1839: '<a href="'.$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.').
1.196 www 1840: &Apache::loncommon::help_open_topic('Caching').'</td></tr></table><br />';
1.193 www 1841: }
1842: return $result;
1843: }
1844:
1845: sub end_simpleeditbutton {
1846: return '';
1.45 albertel 1847: }
1.34 albertel 1848:
1.1 albertel 1849: 1;
1850: __END__
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