1: #
2: # $Id: lonspreadsheet.pm,v 1.179 2003/05/27 15:50:30 www Exp $
3: #
4: # Copyright Michigan State University Board of Trustees
5: #
6: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
7: #
8: # LON-CAPA is free software; you can redistribute it and/or modify
9: # it under the terms of the GNU General Public License as published by
10: # the Free Software Foundation; either version 2 of the License, or
11: # (at your option) any later version.
12: #
13: # LON-CAPA is distributed in the hope that it will be useful,
14: # but WITHOUT ANY WARRANTY; without even the implied warranty of
15: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: # GNU General Public License for more details.
17: #
18: # You should have received a copy of the GNU General Public License
19: # along with LON-CAPA; if not, write to the Free Software
20: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21: #
22: # /home/httpd/html/adm/gpl.txt
23: #
24: # http://www.lon-capa.org/
25: #
26: # The LearningOnline Network with CAPA
27: # Spreadsheet/Grades Display Handler
28: #
29: # POD required stuff:
30:
31: =head1 NAME
32:
33: lonspreadsheet
34:
35: =head1 SYNOPSIS
36:
37: Spreadsheet interface to internal LON-CAPA data
38:
39: =head1 DESCRIPTION
40:
41: Lonspreadsheet provides course coordinators the ability to manage their
42: students grades online. The students are able to view their own grades, but
43: not the grades of their peers. The spreadsheet is highly customizable,
44: offering the ability to use Perl code to manipulate data, as well as many
45: built-in functions.
46:
47: =head2 Functions available to user of lonspreadsheet
48:
49: =over 4
50:
51: =cut
52:
53:
54: package Apache::lonspreadsheet;
55:
56: use strict;
57: use Apache::Constants qw(:common :http);
58: use Apache::lonnet;
59: use Apache::lonhtmlcommon;
60: use Apache::lonmenu;
61: use HTML::Entities();
62:
63: # --------------------------------------------------------- Various form fields
64:
65: sub textfield {
66: my ($title,$name,$value)=@_;
67: return "\n<p><b>$title:</b><br>".
68: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
69: }
70:
71: sub hiddenfield {
72: my ($name,$value)=@_;
73: return "\n".'<input type=hidden name="'.$name.'" value="'.$value.'">';
74: }
75:
76: sub selectbox {
77: my ($title,$name,$value,%options)=@_;
78: my $selout="\n<p><b>$title:</b><br>".'<select name="'.$name.'">';
79: foreach (sort keys(%options)) {
80: $selout.='<option value="'.$_.'"';
81: if ($_ eq $value) { $selout.=' selected'; }
82: $selout.='>'.$options{$_}.'</option>';
83: }
84: return $selout.'</select>';
85: }
86:
87: my %oldsheets;
88: my %loadedcaches;
89:
90: # ================================================================ Main handler
91: #
92: # Interactive call to screen
93: #
94: #
95: sub handler {
96: my $r=shift;
97:
98: my ($sheettype) = ($r->uri=~/\/(\w+)$/);
99:
100: if (! exists($ENV{'form.Status'})) {
101: $ENV{'form.Status'} = 'Active';
102: }
103: if ( ! exists($ENV{'form.output'}) ||
104: ($sheettype ne 'classcalc' &&
105: lc($ENV{'form.output'}) eq 'recursive excel')) {
106: $ENV{'form.output'} = 'HTML';
107: }
108: #
109: # Overload checking
110: #
111: # Check this server
112: my $loaderror=&Apache::lonnet::overloaderror($r);
113: if ($loaderror) { return $loaderror; }
114: # Check the course homeserver
115: $loaderror= &Apache::lonnet::overloaderror($r,
116: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
117: if ($loaderror) { return $loaderror; }
118: #
119: # HTML Header
120: #
121: if ($r->header_only) {
122: $r->content_type('text/html');
123: $r->send_http_header;
124: return OK;
125: }
126: #
127: # Roles Checking
128: #
129: # Needs to be in a course
130: if (! $ENV{'request.course.fn'}) {
131: # Not in a course, or not allowed to modify parms
132: $ENV{'user.error.msg'}=
133: $r->uri.":opa:0:0:Cannot modify spreadsheet";
134: return HTTP_NOT_ACCEPTABLE;
135: }
136: #
137: # Get query string for limited number of parameters
138: #
139: &Apache::loncommon::get_unprocessed_cgi
140: ($ENV{'QUERY_STRING'},['uname','udom','usymb','ufn','mapid','resid']);
141: #
142: # Deal with restricted student permissions
143: #
144: if ($ENV{'request.role'} =~ /^st\./) {
145: delete $ENV{'form.unewfield'} if (exists($ENV{'form.unewfield'}));
146: delete $ENV{'form.unewformula'} if (exists($ENV{'form.unewformula'}));
147: }
148: #
149: # Look for special assessment spreadsheets - '_feedback', etc.
150: #
151: if (($ENV{'form.usymb'}=~/^\_(\w+)/) && (!$ENV{'form.ufn'} ||
152: $ENV{'form.ufn'} eq '' ||
153: $ENV{'form.ufn'} eq 'default')) {
154: $ENV{'form.ufn'}='default_'.$1;
155: }
156: # if (!$ENV{'form.ufn'} || $ENV{'form.ufn'} eq 'default') {
157: # $ENV{'form.ufn'}='course_default_'.$sheettype;
158: # }
159: #
160: # Interactive loading of specific sheet?
161: #
162: if (($ENV{'form.load'}) && ($ENV{'form.loadthissheet'} ne 'Default')) {
163: $ENV{'form.ufn'}=$ENV{'form.loadthissheet'};
164: }
165: #
166: # Determine the user name and domain for the sheet.
167: my $aname;
168: my $adom;
169: unless ($ENV{'form.uname'}) {
170: $aname=$ENV{'user.name'};
171: $adom=$ENV{'user.domain'};
172: } else {
173: $aname=$ENV{'form.uname'};
174: $adom=$ENV{'form.udom'};
175: }
176: #
177: # Open page, try to prevent browser cache.
178: #
179: $r->content_type('text/html');
180: $r->header_out('Cache-control','no-cache');
181: $r->header_out('Pragma','no-cache');
182: $r->send_http_header;
183: #
184: # Header....
185: #
186: $r->print('<html><head><title>LON-CAPA Spreadsheet</title>');
187: my $nothing = &Apache::lonhtmlcommon::javascript_nothing();
188:
189: if ($ENV{'request.role'} !~ /^st\./) {
190: $r->print(<<ENDSCRIPT);
191: <script language="JavaScript">
192:
193: var editwin;
194:
195: function celledit(cellname,cellformula) {
196: var edit_text = '';
197: // cellformula may contain less-than and greater-than symbols, so
198: // we need to escape them?
199: edit_text +='<html><head><title>Cell Edit Window</title></head><body>';
200: edit_text += '<form name="editwinform">';
201: edit_text += '<center><h3>Cell '+cellname+'</h3>';
202: edit_text += '<textarea name="newformula" cols="40" rows="6"';
203: edit_text += ' wrap="off" >'+cellformula+'</textarea>';
204: edit_text += '</br>';
205: edit_text += '<input type="button" name="accept" value="Accept"';
206: edit_text += ' onClick=\\\'javascript:';
207: edit_text += 'opener.document.sheet.unewfield.value=';
208: edit_text += '"'+cellname+'";';
209: edit_text += 'opener.document.sheet.unewformula.value=';
210: edit_text += 'document.editwinform.newformula.value;';
211: edit_text += 'opener.document.sheet.submit();';
212: edit_text += 'self.close()\\\' />';
213: edit_text += ' ';
214: edit_text += '<input type="button" name="abort" ';
215: edit_text += 'value="Discard Changes"';
216: edit_text += ' onClick="javascript:self.close()" />';
217: edit_text += '</center></body></html>';
218:
219: if (editwin != null && !(editwin.closed) ) {
220: editwin.close();
221: }
222:
223: editwin = window.open($nothing,'CellEditWin','height=200,width=350,scrollbars=no,resizeable=yes,alwaysRaised=yes,dependent=yes',true);
224: editwin.document.write(edit_text);
225: }
226:
227: function changesheet(cn) {
228: document.sheet.unewfield.value=cn;
229: document.sheet.unewformula.value='changesheet';
230: document.sheet.submit();
231: }
232:
233: function insertrow(cn) {
234: document.sheet.unewfield.value='insertrow';
235: document.sheet.unewformula.value=cn;
236: document.sheet.submit();
237: }
238:
239: </script>
240: ENDSCRIPT
241: }
242: $r->print('</head>'.&Apache::loncommon::bodytag('Grades Spreadsheet').
243: '<form action="'.$r->uri.'" name="sheet" method="post">');
244: $r->print(&hiddenfield('uname',$ENV{'form.uname'}).
245: &hiddenfield('udom',$ENV{'form.udom'}).
246: &hiddenfield('usymb',$ENV{'form.usymb'}).
247: &hiddenfield('unewfield','').
248: &hiddenfield('unewformula','').
249: &Apache::lonmenu::regflush());
250: $r->rflush();
251: #
252: # Full recalc?
253: #
254: # Read new sheet or modified worksheet
255: my $sheet=Apache::lonspreadsheet::Spreadsheet->new($aname,$adom,$sheettype,$ENV{'form.usymb'});
256: if ($ENV{'form.forcerecalc'}) {
257: $r->print('<h4>Completely Recalculating Sheet ...</h4>');
258: $sheet->complete_recalc();
259: }
260: #
261: # Global directory configs
262: #
263: $sheet->includedir($r->dir_config('lonIncludes'));
264: #
265: # Check user permissions
266: if (($sheet->{'type'} eq 'classcalc' ) ||
267: ($sheet->{'uname'} ne $ENV{'user.name'} ) ||
268: ($sheet->{'udom'} ne $ENV{'user.domain'})) {
269: unless (&Apache::lonnet::allowed('vgr',$sheet->{'cid'})) {
270: $r->print('<h1>Access Permission Denied</h1>'.
271: '</form></body></html>');
272: return OK;
273: }
274: }
275: # Print out user information
276: $r->print('<h2>'.$sheet->{'coursedesc'}.'</h2>');
277: if ($sheet->{'type'} ne 'classcalc') {
278: $r->print('<h2>'.$sheet->gettitle().'</h2><p>');
279: }
280: if ($sheet->{'type'} eq 'assesscalc') {
281: $r->print('<b>User:</b> '.$sheet->{'uname'}.
282: '<br /><b>Domain:</b> '.$sheet->{'udom'}.'<br />');
283: }
284: if ($sheet->{'type'} eq 'studentcalc' ||
285: $sheet->{'type'} eq 'assesscalc') {
286: $r->print('<b>Section/Group:</b>'.$sheet->{'csec'}.'</p>');
287: }
288: #
289: # If a new formula had been entered, go from work copy
290: if ($ENV{'form.unewfield'}) {
291: $r->print('<h2>Modified Workcopy</h2>');
292: #$ENV{'form.unewformula'}=~s/\'/\"/g;
293: $r->print('<p>Cell '.$ENV{'form.unewfield'}.' = <pre>');
294: $r->print(&HTML::Entities::encode($ENV{'form.unewformula'}).
295: '</pre></p>');
296: $sheet->{'filename'} = $ENV{'form.ufn'};
297: $sheet->tmpread($ENV{'form.unewfield'},$ENV{'form.unewformula'});
298: } elsif ($ENV{'form.saveas'}) {
299: $sheet->{'filename'} = $ENV{'form.ufn'};
300: $sheet->tmpread();
301: } else {
302: $sheet->readsheet($ENV{'form.ufn'});
303: }
304: # Additional options
305: if ($sheet->{'type'} eq 'assesscalc') {
306: $r->print('<p><font size=+2>'.
307: '<a href="/adm/studentcalc?'.
308: 'uname='.$sheet->{'uname'}.
309: '&udom='.$sheet->{'udom'}.'">'.
310: 'Level up: Student Sheet</a></font></p>');
311: }
312: if (($sheet->{'type'} eq 'studentcalc') &&
313: (&Apache::lonnet::allowed('vgr',$sheet->{'cid'}))) {
314: $r->print ('<p><font size=+2><a href="/adm/classcalc">'.
315: 'Level up: Course Sheet</a></font></p>');
316: }
317: # Recalc button
318: $r->print('<br />'.
319: '<input type="submit" name="forcerecalc" '.
320: 'value="Completely Recalculate Sheet"></p>');
321: # Save dialog
322: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
323: my $fname=$ENV{'form.ufn'};
324: $fname=~s/\_[^\_]+$//;
325: if ($fname eq 'default') { $fname='course_default'; }
326: $r->print('<input type=submit name=saveas value="Save as ...">'.
327: '<input type=text size=20 name=newfn value="'.$fname.'">'.
328: 'make default: <input type=checkbox name="makedefufn"><p>');
329: }
330: $r->print(&hiddenfield('ufn',$sheet->{'filename'}));
331: # Load dialog
332: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
333: $r->print('<p><input type=submit name=load value="Load ...">'.
334: '<select name="loadthissheet">'.
335: '<option name="default">Default</option>');
336: foreach ($sheet->othersheets()) {
337: $r->print('<option name="'.$_.'"');
338: if ($ENV{'form.ufn'} eq $_) {
339: $r->print(' selected');
340: }
341: $r->print('>'.$_.'</option>');
342: }
343: $r->print('</select><p>');
344: if ($sheet->{'type'} eq 'studentcalc') {
345: $sheet->setothersheets($sheet->othersheets('assesscalc'));
346: }
347: }
348: #
349: # Set up caching mechanisms
350: #
351: &Apache::lonspreadsheet::Spreadsheet::load_spreadsheet_expirationdates();
352: # Clear out old caches if we have not seen this class before.
353: if (exists($oldsheets{'course'}) &&
354: $oldsheets{'course'} ne $sheet->{'cid'}) {
355: undef %oldsheets;
356: undef %loadedcaches;
357: &Apache::lonspreadsheet::Spreadsheet::clear_package_variables();
358: }
359: $oldsheets{'course'} = $sheet->{'cid'};
360: #
361: if ($sheet->{'type'} eq 'classcalc') {
362: $r->print("Loading previously calculated student sheets ...\n");
363: $r->rflush();
364: &Apache::lonspreadsheet::Spreadsheet::cachedcsheets();
365: } elsif ($sheet->{'type'} eq 'studentcalc') {
366: $r->print("Loading previously calculated assessment sheets ...\n");
367: $r->rflush();
368: $sheet->cachedssheets();
369: }
370: # Update sheet, load rows
371: $r->print("Loaded sheet(s), updating rows ...<br>\n");
372: $r->rflush();
373: #
374: $sheet->updatesheet();
375: $r->print("Updated rows, loading row data ...\n");
376: $r->rflush();
377: #
378: $sheet->loadrows($r);
379: $r->print("Loaded row data, calculating sheet ...<br>\n");
380: $r->rflush();
381: #
382: my $calcoutput=$sheet->calcsheet();
383: $r->print('<h3><font color=red>'.$calcoutput.'</h3></font>');
384: # See if something to save
385: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
386: my $fname='';
387: if ($ENV{'form.saveas'} && ($fname=$ENV{'form.newfn'})) {
388: $fname=~s/\W/\_/g;
389: if ($fname eq 'default') { $fname='course_default'; }
390: $fname.='_'.$sheet->{'type'};
391: $sheet->{'filename'} = $fname;
392: $ENV{'form.ufn'}=$fname;
393: $r->print('<p>Saving spreadsheet: '.
394: $sheet->writesheet($ENV{'form.makedefufn'}).
395: '<p>');
396: }
397: }
398: #
399: # Write the modified worksheet
400: $r->print('<b>Current sheet:</b> '.$sheet->{'filename'}.'</p>');
401: $sheet->tmpwrite();
402: if ($sheet->{'type'} eq 'assesscalc') {
403: $r->print('<p>Show rows with empty A column: ');
404: } else {
405: $r->print('<p>Show empty rows: ');
406: }
407: #
408: $r->print(&hiddenfield('userselhidden','true').
409: '<input type="checkbox" name="showall" onClick="submit()"');
410: #
411: if ($ENV{'form.showall'}) {
412: $r->print(' checked');
413: } else {
414: unless ($ENV{'form.userselhidden'}) {
415: unless
416: ($ENV{'course.'.$sheet->{'cid'}.'.hideemptyrows'} eq 'yes') {
417: $r->print(' checked');
418: $ENV{'form.showall'}=1;
419: }
420: }
421: }
422: $r->print('>');
423: #
424: # output format select box
425: $r->print(' Output as <select name="output" size="1" onChange="submit()">'.
426: "\n");
427: foreach my $mode (qw/HTML CSV Excel/) {
428: $r->print('<option value="'.$mode.'"');
429: if ($ENV{'form.output'} eq $mode) {
430: $r->print(' selected ');
431: }
432: $r->print('>'.$mode.'</option>'."\n");
433: }
434: #
435: # Mulit-sheet excel takes too long and does not work at all for large
436: # classes. Future inclusion of this option may be possible with the
437: # Spreadsheet::WriteExcel::Big and speed improvements.
438: #
439: # if ($sheet->{'type'} eq 'classcalc') {
440: # $r->print('<option value="recursive excel"');
441: # if ($ENV{'form.output'} eq 'recursive excel') {
442: # $r->print(' selected ');
443: # }
444: # $r->print(">Multi-Sheet Excel</option>\n");
445: # }
446: $r->print("</select>\n");
447: #
448: if ($sheet->{'type'} eq 'classcalc') {
449: $r->print(' Student Status: '.
450: &Apache::lonhtmlcommon::StatusOptions
451: ($ENV{'form.Status'},'sheet'));
452: }
453: #
454: # Buttons to insert rows
455: # $r->print(<<ENDINSERTBUTTONS);
456: #<br>
457: #<input type='button' onClick='insertrow("top");'
458: #value='Insert Row Top'>
459: #<input type='button' onClick='insertrow("bottom");'
460: #value='Insert Row Bottom'><br>
461: #ENDINSERTBUTTONS
462: # Print out sheet
463: $sheet->outsheet($r);
464: $r->print('</form></body></html>');
465: # Done
466: return OK;
467: }
468:
469: 1;
470:
471: #############################################################
472: #############################################################
473: #############################################################
474:
475: package Apache::lonspreadsheet::Spreadsheet;
476:
477: use strict;
478: use Apache::Constants qw(:common :http);
479: use Apache::lonnet;
480: use Apache::loncoursedata;
481: use Apache::File();
482: use Safe;
483: use Safe::Hole;
484: use Opcode;
485: use GDBM_File;
486: use HTML::Entities();
487: use HTML::TokeParser;
488: use Spreadsheet::WriteExcel;
489: use Time::HiRes;
490:
491: #
492: # These global hashes are dependent on user, course and resource,
493: # and need to be initialized every time when a sheet is calculated
494: #
495: my %courseopt;
496: my %useropt;
497: my %parmhash;
498:
499: #
500: # Caches for coursewide information
501: #
502: my %Section;
503:
504: #
505: # Caches for previously calculated spreadsheets
506: #
507: my %expiredates;
508:
509: #
510: # Cache for stores of an individual user
511: #
512: my $cachedassess;
513: my %cachedstores;
514:
515: #
516: # Some hashes for stats on timing and performance
517: #
518: my %starttimes;
519: my %usedtimes;
520: my %numbertimes;
521:
522: #
523: # Directories
524: #
525: my $includedir;
526:
527: sub includedir {
528: my $self = shift;
529: $includedir = shift;
530: }
531:
532: my %spreadsheets;
533: #my %loadedcaches;
534: my %courserdatas;
535: my %userrdatas;
536: my %defaultsheets;
537: my %rowlabel_cache;
538: #my %oldsheets;
539:
540: sub clear_package_variables {
541: undef %courseopt;
542: undef %useropt;
543: undef %parmhash;
544: undef %Section;
545: undef %expiredates;
546: undef $cachedassess;
547: undef %cachedstores;
548: undef %starttimes;
549: undef %usedtimes;
550: undef %numbertimes;
551: undef $includedir;
552: undef %spreadsheets;
553: undef %courserdatas;
554: undef %userrdatas;
555: undef %defaultsheets;
556: undef %rowlabel_cache;
557: }
558:
559: sub complete_recalc {
560: my $self = shift;
561: undef %spreadsheets;
562: undef %courserdatas;
563: undef %userrdatas;
564: undef %defaultsheets;
565: undef %rowlabel_cache;
566: }
567:
568: sub get_sheet {
569: my $self = shift;
570: my $sheet_id = shift;
571: my $formulas;
572: # if we already have the file loaded and parsed, return the formulas
573: if (exists($self->{'sheets'}->{$sheet_id})) {
574: $formulas = $self->{'sheets'}->{$sheet_id};
575: $self->debug('retrieved '.$sheet_id);
576: } else {
577: # load the file
578: # set $error and return undef if there is an error loading
579: # parse it
580: # set $error and return undef if there is an error parsing
581: }
582: return $formulas;
583: }
584:
585: #
586: # Load previously cached student spreadsheets for this course
587: #
588: sub load_spreadsheet_expirationdates {
589: undef %expiredates;
590: my $cid=$ENV{'request.course.id'};
591: my @tmp = &Apache::lonnet::dump('nohist_expirationdates',
592: $ENV{'course.'.$cid.'.domain'},
593: $ENV{'course.'.$cid.'.num'});
594: if (lc($tmp[0]) !~ /^error/){
595: %expiredates = @tmp;
596: }
597: }
598:
599: # ===================================================== Calculated sheets cache
600: #
601: # Load previously cached student spreadsheets for this course
602: #
603: sub cachedcsheets {
604: my $cid=$ENV{'request.course.id'};
605: my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets',
606: $ENV{'course.'.$cid.'.domain'},
607: $ENV{'course.'.$cid.'.num'});
608: if ($tmp[0] !~ /^error/) {
609: my %StupidTempHash = @tmp;
610: while (my ($key,$value) = each %StupidTempHash) {
611: $Apache::lonspreadsheet::oldsheets{$key} = $value;
612: }
613: }
614: }
615:
616: #
617: # Load previously cached assessment spreadsheets for this student
618: #
619: sub cachedssheets {
620: my $self = shift;
621: my ($uname,$udom) = @_;
622: $uname = $uname || $self->{'uname'};
623: $udom = $udom || $self->{'udom'};
624: if (! exists($Apache::lonspreadsheet::loadedcaches{$uname.'_'.$udom})) {
625: my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets_'.
626: $ENV{'request.course.id'},
627: $self->{'udom'},
628: $self->{'uname'});
629: if ($tmp[0] !~ /^error/) {
630: my %TempHash = @tmp;
631: my $count = 0;
632: while (my ($key,$value) = each %TempHash) {
633: $Apache::lonspreadsheet::oldsheets{$key} = $value;
634: $count++;
635: }
636: $Apache::lonspreadsheet::loadedcaches{$self->{'uname'}.'_'.$self->{'udom'}}=1;
637: }
638: }
639: }
640:
641: # ======================================================= Forced recalculation?
642: sub checkthis {
643: my ($keyname,$time)=@_;
644: if (! exists($expiredates{$keyname})) {
645: return 0;
646: } else {
647: return ($time<$expiredates{$keyname});
648: }
649: }
650:
651: sub forcedrecalc {
652: my ($uname,$udom,$stype,$usymb)=@_;
653: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
654: my $time=$Apache::lonspreadsheet::oldsheets{$key.'.time'};
655: if ($ENV{'form.forcerecalc'}) { return 1; }
656: unless ($time) { return 1; }
657: if ($stype eq 'assesscalc') {
658: my $map=(split(/___/,$usymb))[0];
659: if (&checkthis('::assesscalc:',$time) ||
660: &checkthis('::assesscalc:'.$map,$time) ||
661: &checkthis('::assesscalc:'.$usymb,$time) ||
662: &checkthis($uname.':'.$udom.':assesscalc:',$time) ||
663: &checkthis($uname.':'.$udom.':assesscalc:'.$map,$time) ||
664: &checkthis($uname.':'.$udom.':assesscalc:'.$usymb,$time)) {
665: return 1;
666: }
667: } else {
668: if (&checkthis('::studentcalc:',$time) ||
669: &checkthis($uname.':'.$udom.':studentcalc:',$time)) {
670: return 1;
671: }
672: }
673: return 0;
674: }
675:
676:
677: ##################################################
678: ##################################################
679:
680: =pod
681:
682: =item &parmval()
683:
684: Determine the value of a parameter.
685:
686: Inputs: $what, the parameter needed, $symb, $uname, $udom, $csec
687:
688: Returns: The value of a parameter, or '' if none.
689:
690: This function cascades through the possible levels searching for a value for
691: a parameter. The levels are checked in the following order:
692: user, course (at section level and course level), map, and lonnet::metadata.
693: This function uses %parmhash, which must be tied prior to calling it.
694: This function also requires %courseopt and %useropt to be initialized for
695: this user and course.
696:
697: =cut
698:
699: ##################################################
700: ##################################################
701: sub parmval {
702: my ($what,$symb,$uname,$udom,$csec)=@_;
703: return '' if (!$symb);
704: #
705: my $cid = $ENV{'request.course.id'};
706: my $result='';
707: #
708: my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);
709: # Cascading lookup scheme
710: my $rwhat=$what;
711: $what =~ s/^parameter\_//;
712: $what =~ s/\_([^\_]+)$/\.$1/;
713: #
714: my $symbparm = $symb.'.'.$what;
715: my $mapparm = $mapname.'___(all).'.$what;
716: my $usercourseprefix = $uname.'_'.$udom.'_'.$cid;
717: #
718: my $seclevel = $usercourseprefix.'.['.$csec.'].'.$what;
719: my $seclevelr = $usercourseprefix.'.['.$csec.'].'.$symbparm;
720: my $seclevelm = $usercourseprefix.'.['.$csec.'].'.$mapparm;
721: #
722: my $courselevel = $usercourseprefix.'.'.$what;
723: my $courselevelr = $usercourseprefix.'.'.$symbparm;
724: my $courselevelm = $usercourseprefix.'.'.$mapparm;
725: # fourth, check user
726: if (defined($uname)) {
727: return $useropt{$courselevelr} if (defined($useropt{$courselevelr}));
728: return $useropt{$courselevelm} if (defined($useropt{$courselevelm}));
729: return $useropt{$courselevel} if (defined($useropt{$courselevel}));
730: }
731: # third, check course
732: if (defined($csec)) {
733: return $courseopt{$seclevelr} if (defined($courseopt{$seclevelr}));
734: return $courseopt{$seclevelm} if (defined($courseopt{$seclevelm}));
735: return $courseopt{$seclevel} if (defined($courseopt{$seclevel}));
736: }
737: #
738: return $courseopt{$courselevelr} if (defined($courseopt{$courselevelr}));
739: return $courseopt{$courselevelm} if (defined($courseopt{$courselevelm}));
740: return $courseopt{$courselevel} if (defined($courseopt{$courselevel}));
741: # second, check map parms
742: my $thisparm = $parmhash{$symbparm};
743: return $thisparm if (defined($thisparm));
744:
745: # first, check default
746: $thisparm = &Apache::lonnet::metadata($fn,$rwhat.'.default');
747: return $thisparm if (defined($thisparm));
748:
749: #Cascade Up
750: my $space=$what;
751: $space=~s/\.\w+$//;
752: if ($space ne '0') {
753: my @parts=split(/_/,$space);
754: my $id=pop(@parts);
755: my $part=join('_',@parts);
756: if ($part eq '') { $part='0'; }
757: my $newwhat=$rwhat;
758: $newwhat=~s/\Q$space\E/$part/;
759: my $partgeneral=&parmval($newwhat,$symb,$uname,$udom,$csec);
760: if (defined($partgeneral)) { return $partgeneral; }
761: }
762:
763: #nothing defined
764: return '';
765: }
766:
767: #
768: # new: Make a new spreadsheet
769: #
770: sub new {
771: my $this = shift;
772: my $class = ref($this) || $this;
773: #
774: my ($uname,$udom,$stype,$usymb)=@_;
775: #
776: if (! exists($Section{$uname.':'.$udom})) {
777: my $classlist = &Apache::loncoursedata::get_classlist();
778: #
779: foreach my $student (keys(%$classlist)) {
780: my ($studentDomain,$studentName,undef,undef,undef,$studentSection,
781: undef,undef) = @{$classlist->{$student}};
782: $Section{$studentName.':'.$studentDomain} = $studentSection;
783: }
784: }
785: my $self = {
786: uname => $uname,
787: udom => $udom,
788: type => $stype,
789: usymb => $usymb,
790: errorlog => '',
791: maxrow => '',
792: mapid => $ENV{'form.mapid'},
793: resid => $ENV{'form.resid'},
794: cid => $ENV{'request.course.id'},
795: csec => $Section{$uname.':'.$udom},
796: cnum => $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
797: cdom => $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
798: chome => $ENV{'course.'.$ENV{'request.course.id'}.'.home'},
799: coursefilename => $ENV{'request.course.fn'},
800: coursedesc => $ENV{'course.'.$ENV{'request.course.id'}.'.description'},
801: rows => [],
802: template_cells => [],
803: };
804: $self->{'uhome'} = &Apache::lonnet::homeserver($uname,$udom);
805: #
806: #
807: $self->{'formulas'} = {};
808: $self->{'constants'} = {};
809: $self->{'othersheets'} = [];
810: $self->{'rowlabel'} = {};
811: #
812: #
813: $self->{'safe'} = &initsheet($self->{'type'});
814: $self->{'root'} = $self->{'safe'}->root();
815: #
816: # Place some of the %$self items into the safe space except the safe space
817: # itself
818: my $initstring = '';
819: foreach (qw/uname udom type usymb cid csec coursefilename
820: cnum cdom chome uhome/) {
821: $initstring.= qq{\$$_="$self->{$_}";};
822: }
823: $self->{'safe'}->reval($initstring);
824: bless($self,$class);
825: return $self;
826: }
827:
828: ##
829: ## mask - used to reside in the safe space.
830: ##
831: {
832:
833: my %memoizer;
834:
835: sub mask {
836: my ($lower,$upper)=@_;
837: my $key = $lower.'_'.$upper;
838: if (exists($memoizer{$key})) {
839: return $memoizer{$key};
840: }
841: $upper = $lower if (! defined($upper));
842: #
843: my ($la,$ld) = ($lower=~/([A-Za-z]|\*)(\d+|\*)/);
844: my ($ua,$ud) = ($upper=~/([A-Za-z]|\*)(\d+|\*)/);
845: #
846: my $alpha='';
847: my $num='';
848: #
849: if (($la eq '*') || ($ua eq '*')) {
850: $alpha='[A-Za-z]';
851: } else {
852: if (($la=~/[A-Z]/) && ($ua=~/[A-Z]/) ||
853: ($la=~/[a-z]/) && ($ua=~/[a-z]/)) {
854: $alpha='['.$la.'-'.$ua.']';
855: } else {
856: $alpha='['.$la.'-Za-'.$ua.']';
857: }
858: }
859: if (($ld eq '*') || ($ud eq '*')) {
860: $num='\d+';
861: } else {
862: if (length($ld)!=length($ud)) {
863: $num.='(';
864: foreach ($ld=~m/\d/g) {
865: $num.='['.$_.'-9]';
866: }
867: if (length($ud)-length($ld)>1) {
868: $num.='|\d{'.(length($ld)+1).','.(length($ud)-1).'}';
869: }
870: $num.='|';
871: foreach ($ud=~m/\d/g) {
872: $num.='[0-'.$_.']';
873: }
874: $num.=')';
875: } else {
876: my @lda=($ld=~m/\d/g);
877: my @uda=($ud=~m/\d/g);
878: my $i;
879: my $j=0;
880: my $notdone=1;
881: for ($i=0;($i<=$#lda)&&($notdone);$i++) {
882: if ($lda[$i]==$uda[$i]) {
883: $num.=$lda[$i];
884: $j=$i;
885: } else {
886: $notdone=0;
887: }
888: }
889: if ($j<$#lda-1) {
890: $num.='('.$lda[$j+1];
891: for ($i=$j+2;$i<=$#lda;$i++) {
892: $num.='['.$lda[$i].'-9]';
893: }
894: if ($uda[$j+1]-$lda[$j+1]>1) {
895: $num.='|['.($lda[$j+1]+1).'-'.($uda[$j+1]-1).']\d{'.
896: ($#lda-$j-1).'}';
897: }
898: $num.='|'.$uda[$j+1];
899: for ($i=$j+2;$i<=$#uda;$i++) {
900: $num.='[0-'.$uda[$i].']';
901: }
902: $num.=')';
903: } else {
904: if ($lda[-1]!=$uda[-1]) {
905: $num.='['.$lda[-1].'-'.$uda[-1].']';
906: }
907: }
908: }
909: }
910: my $expression ='^'.$alpha.$num."\$";
911: $memoizer{$key} = $expression;
912: return $expression;
913: }
914:
915: }
916:
917: sub add_hash_to_safe {
918: my $self = shift;
919: my $code = <<'END';
920: #-------------------------------------------------------
921:
922: =item UWCALC(hashname,modules,units,date)
923:
924: returns the proportion of the module
925: weights not previously completed by the student.
926:
927: =over 4
928:
929: =item hashname
930:
931: name of the hash the module dates have been inserted into
932:
933: =item modules
934:
935: reference to a cell which contains a comma deliminated list of modules
936: covered by the assignment.
937:
938: =item units
939:
940: reference to a cell which contains a comma deliminated list of module
941: weights with respect to the assignment
942:
943: =item date
944:
945: reference to a cell which contains the date the assignment was completed.
946:
947: =back
948:
949: =cut
950:
951: #-------------------------------------------------------
952: sub UWCALC {
953: my ($hashname,$modules,$units,$date) = @_;
954: my @Modules = split(/,/,$modules);
955: my @Units = split(/,/,$units);
956: my $total_weight;
957: foreach (@Units) {
958: $total_weight += $_;
959: }
960: my $usum=0;
961: for (my $i=0; $i<=$#Modules; $i++) {
962: if (&HASH($hashname,$Modules[$i]) eq $date) {
963: $usum += $Units[$i];
964: }
965: }
966: return $usum/$total_weight;
967: }
968:
969: #-------------------------------------------------------
970:
971: =item CDLSUM(list)
972:
973: returns the sum of the elements in a cell which contains
974: a Comma Deliminate List of numerical values.
975: 'list' is a reference to a cell which contains a comma deliminated list.
976:
977: =cut
978:
979: #-------------------------------------------------------
980: sub CDLSUM {
981: my ($list)=@_;
982: my $sum;
983: foreach (split/,/,$list) {
984: $sum += $_;
985: }
986: return $sum;
987: }
988:
989: #-------------------------------------------------------
990:
991: =item CDLITEM(list,index)
992:
993: returns the item at 'index' in a Comma Deliminated List.
994:
995: =over 4
996:
997: =item list
998:
999: reference to a cell which contains a comma deliminated list.
1000:
1001: =item index
1002:
1003: the Perl index of the item requested (first element in list has
1004: an index of 0)
1005:
1006: =back
1007:
1008: =cut
1009:
1010: #-------------------------------------------------------
1011: sub CDLITEM {
1012: my ($list,$index)=@_;
1013: my @Temp = split/,/,$list;
1014: return $Temp[$index];
1015: }
1016:
1017: #-------------------------------------------------------
1018:
1019: =item CDLHASH(name,key,value)
1020:
1021: loads a comma deliminated list of keys into
1022: the hash 'name', all with a value of 'value'.
1023:
1024: =over 4
1025:
1026: =item name
1027:
1028: name of the hash.
1029:
1030: =item key
1031:
1032: (a pointer to) a comma deliminated list of keys.
1033:
1034: =item value
1035:
1036: a single value to be entered for each key.
1037:
1038: =back
1039:
1040: =cut
1041:
1042: #-------------------------------------------------------
1043: sub CDLHASH {
1044: my ($name,$key,$value)=@_;
1045: my @Keys;
1046: my @Values;
1047: # Check to see if we have multiple $key values
1048: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
1049: my $keymask = &mask($key);
1050: # Assume the keys are addresses
1051: my @Temp = grep /$keymask/,keys(%sheet_values);
1052: @Keys = $sheet_values{@Temp};
1053: } else {
1054: $Keys[0]= $key;
1055: }
1056: my @Temp;
1057: foreach $key (@Keys) {
1058: @Temp = (@Temp, split/,/,$key);
1059: }
1060: @Keys = @Temp;
1061: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
1062: my $valmask = &mask($value);
1063: my @Temp = grep /$valmask/,keys(%sheet_values);
1064: @Values =$sheet_values{@Temp};
1065: } else {
1066: $Values[0]= $value;
1067: }
1068: $value = $Values[0];
1069: # Add values to hash
1070: for (my $i = 0; $i<=$#Keys; $i++) {
1071: my $key = $Keys[$i];
1072: if (! exists ($hashes{$name}->{$key})) {
1073: $hashes{$name}->{$key}->[0]=$value;
1074: } else {
1075: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
1076: $hashes{$name}->{$key} = \@Temp;
1077: }
1078: }
1079: return "hash '$name' updated";
1080: }
1081:
1082: #-------------------------------------------------------
1083:
1084: =item GETHASH(name,key,index)
1085:
1086: returns the element in hash 'name'
1087: reference by the key 'key', at index 'index' in the values list.
1088:
1089: =cut
1090:
1091: #-------------------------------------------------------
1092: sub GETHASH {
1093: my ($name,$key,$index)=@_;
1094: if (! defined($index)) {
1095: $index = 0;
1096: }
1097: if ($key =~ /^[A-z]\d+$/) {
1098: $key = $sheet_values{$key};
1099: }
1100: return $hashes{$name}->{$key}->[$index];
1101: }
1102:
1103: #-------------------------------------------------------
1104:
1105: =item CLEARHASH(name)
1106:
1107: clears all the values from the hash 'name'
1108:
1109: =item CLEARHASH(name,key)
1110:
1111: clears all the values from the hash 'name' associated with the given key.
1112:
1113: =cut
1114:
1115: #-------------------------------------------------------
1116: sub CLEARHASH {
1117: my ($name,$key)=@_;
1118: if (defined($key)) {
1119: if (exists($hashes{$name}->{$key})) {
1120: $hashes{$name}->{$key}=undef;
1121: return "hash '$name' key '$key' cleared";
1122: }
1123: } else {
1124: if (exists($hashes{$name})) {
1125: $hashes{$name}=undef;
1126: return "hash '$name' cleared";
1127: }
1128: }
1129: return "Error in clearing hash";
1130: }
1131:
1132: #-------------------------------------------------------
1133:
1134: =item HASH(name,key,value)
1135:
1136: loads values into an internal hash. If a key
1137: already has a value associated with it, the values are sorted numerically.
1138:
1139: =item HASH(name,key)
1140:
1141: returns the 0th value in the hash 'name' associated with 'key'.
1142:
1143: =cut
1144:
1145: #-------------------------------------------------------
1146: sub HASH {
1147: my ($name,$key,$value)=@_;
1148: my @Keys;
1149: undef @Keys;
1150: my @Values;
1151: # Check to see if we have multiple $key values
1152: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
1153: my $keymask = &mask($key);
1154: # Assume the keys are addresses
1155: my @Temp = grep /$keymask/,keys(%sheet_values);
1156: @Keys = $sheet_values{@Temp};
1157: } else {
1158: $Keys[0]= $key;
1159: }
1160: # If $value is empty, return the first value associated
1161: # with the first key.
1162: if (! $value) {
1163: return $hashes{$name}->{$Keys[0]}->[0];
1164: }
1165: # Check to see if we have multiple $value(s)
1166: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
1167: my $valmask = &mask($value);
1168: my @Temp = grep /$valmask/,keys(%sheet_values);
1169: @Values =$sheet_values{@Temp};
1170: } else {
1171: $Values[0]= $value;
1172: }
1173: # Add values to hash
1174: for (my $i = 0; $i<=$#Keys; $i++) {
1175: my $key = $Keys[$i];
1176: my $value = ($i<=$#Values ? $Values[$i] : $Values[0]);
1177: if (! exists ($hashes{$name}->{$key})) {
1178: $hashes{$name}->{$key}->[0]=$value;
1179: } else {
1180: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
1181: $hashes{$name}->{$key} = \@Temp;
1182: }
1183: }
1184: return $Values[-1];
1185: }
1186: END
1187: $self->{'safe'}->reval($code);
1188: return;
1189: }
1190:
1191: sub initsheet {
1192: my $safeeval = new Safe(shift);
1193: my $safehole = new Safe::Hole;
1194: $safeeval->permit("entereval");
1195: $safeeval->permit(":base_math");
1196: $safeeval->permit("sort");
1197: $safeeval->deny(":base_io");
1198: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1199: $safehole->wrap(\&mask,$safeeval,'&mask');
1200: $safeeval->share('$@');
1201: my $code=<<'ENDDEFS';
1202: # ---------------------------------------------------- Inside of the safe space
1203: #
1204: # f: formulas
1205: # t: intermediate format (variable references expanded)
1206: # v: output values
1207: # c: preloaded constants (A-column)
1208: # rl: row label
1209: # os: other spreadsheets (for student spreadsheet only)
1210:
1211: undef %sheet_values; # Holds the (computed, final) values for the sheet
1212: # This is only written to by &calc, the spreadsheet computation routine.
1213: # It is read by many functions
1214: undef %t; # Holds the values of the spreadsheet temporarily. Set in &sett,
1215: # which does the translation of strings like C5 into the value in C5.
1216: # Used in &calc - %t holds the values that are actually eval'd.
1217: undef %f; # Holds the formulas for each cell. This is the users
1218: # (spreadsheet authors) data for each cell.
1219: undef %c; # Holds the constants for a sheet. In the assessment
1220: # sheets, this is the A column. Used in &MINPARM, &MAXPARM, &expandnamed,
1221: # &sett, and &constants. There is no &getconstants.
1222: # &constants is called by &loadstudent, &loadcourse, &load assessment,
1223: undef @os; # Holds the names of other spreadsheets - this is used to specify
1224: # the spreadsheets that are available for the assessment sheet.
1225: # Set by &setothersheets. &setothersheets is called by &handler. A
1226: # related subroutine is &othersheets.
1227: $errorlog = '';
1228:
1229: $maxrow = 0;
1230: $type = '';
1231:
1232: # filename/reference of the sheet
1233: $filename = '';
1234:
1235: # user data
1236: $uname = '';
1237: $uhome = '';
1238: $udom = '';
1239:
1240: # course data
1241:
1242: $csec = '';
1243: $chome= '';
1244: $cnum = '';
1245: $cdom = '';
1246: $cid = '';
1247: $coursefilename = '';
1248:
1249: # symb
1250:
1251: $usymb = '';
1252:
1253: # error messages
1254: $errormsg = '';
1255:
1256: #-------------------------------------------------------
1257:
1258: =item NUM(range)
1259:
1260: returns the number of items in the range.
1261:
1262: =cut
1263:
1264: #-------------------------------------------------------
1265: sub NUM {
1266: my $mask=&mask(@_);
1267: my $num= $#{@{grep(/$mask/,keys(%sheet_values))}}+1;
1268: return $num;
1269: }
1270:
1271: sub BIN {
1272: my ($low,$high,$lower,$upper)=@_;
1273: my $mask=&mask($lower,$upper);
1274: my $num=0;
1275: foreach (grep /$mask/,keys(%sheet_values)) {
1276: if (($sheet_values{$_}>=$low) && ($sheet_values{$_}<=$high)) {
1277: $num++;
1278: }
1279: }
1280: return $num;
1281: }
1282:
1283:
1284: #-------------------------------------------------------
1285:
1286: =item SUM(range)
1287:
1288: returns the sum of items in the range.
1289:
1290: =cut
1291:
1292: #-------------------------------------------------------
1293: sub SUM {
1294: my $mask=&mask(@_);
1295: my $sum=0;
1296: foreach (grep /$mask/,keys(%sheet_values)) {
1297: $sum+=$sheet_values{$_};
1298: }
1299: return $sum;
1300: }
1301:
1302: #-------------------------------------------------------
1303:
1304: =item MEAN(range)
1305:
1306: compute the average of the items in the range.
1307:
1308: =cut
1309:
1310: #-------------------------------------------------------
1311: sub MEAN {
1312: my $mask=&mask(@_);
1313: # $errorlog.='(mask = '.$mask.' )';
1314: my $sum=0;
1315: my $num=0;
1316: foreach (grep /$mask/,keys(%sheet_values)) {
1317: $sum+=$sheet_values{$_};
1318: $num++;
1319: }
1320: if ($num) {
1321: return $sum/$num;
1322: } else {
1323: return undef;
1324: }
1325: }
1326:
1327: #-------------------------------------------------------
1328:
1329: =item STDDEV(range)
1330:
1331: compute the standard deviation of the items in the range.
1332:
1333: =cut
1334:
1335: #-------------------------------------------------------
1336: sub STDDEV {
1337: my $mask=&mask(@_);
1338: # $errorlog.='(mask = '.$mask.' )';
1339: my $sum=0; my $num=0;
1340: foreach (grep /$mask/,keys(%sheet_values)) {
1341: $sum+=$sheet_values{$_};
1342: $num++;
1343: }
1344: unless ($num>1) { return undef; }
1345: my $mean=$sum/$num;
1346: $sum=0;
1347: foreach (grep /$mask/,keys(%sheet_values)) {
1348: $sum+=($sheet_values{$_}-$mean)**2;
1349: }
1350: return sqrt($sum/($num-1));
1351: }
1352:
1353: #-------------------------------------------------------
1354:
1355: =item PROD(range)
1356:
1357: compute the product of the items in the range.
1358:
1359: =cut
1360:
1361: #-------------------------------------------------------
1362: sub PROD {
1363: my $mask=&mask(@_);
1364: my $prod=1;
1365: foreach (grep /$mask/,keys(%sheet_values)) {
1366: $prod*=$sheet_values{$_};
1367: }
1368: return $prod;
1369: }
1370:
1371: #-------------------------------------------------------
1372:
1373: =item MAX(range)
1374:
1375: compute the maximum of the items in the range.
1376:
1377: =cut
1378:
1379: #-------------------------------------------------------
1380: sub MAX {
1381: my $mask=&mask(@_);
1382: my $max='-';
1383: foreach (grep /$mask/,keys(%sheet_values)) {
1384: unless ($max) { $max=$sheet_values{$_}; }
1385: if (($sheet_values{$_}>$max) || ($max eq '-')) { $max=$sheet_values{$_}; }
1386: }
1387: return $max;
1388: }
1389:
1390: #-------------------------------------------------------
1391:
1392: =item MIN(range)
1393:
1394: compute the minimum of the items in the range.
1395:
1396: =cut
1397:
1398: #-------------------------------------------------------
1399: sub MIN {
1400: my $mask=&mask(@_);
1401: my $min='-';
1402: foreach (grep /$mask/,keys(%sheet_values)) {
1403: unless ($max) { $max=$sheet_values{$_}; }
1404: if (($sheet_values{$_}<$min) || ($min eq '-')) {
1405: $min=$sheet_values{$_};
1406: }
1407: }
1408: return $min;
1409: }
1410:
1411: #-------------------------------------------------------
1412:
1413: =item SUMMAX(num,lower,upper)
1414:
1415: compute the sum of the largest 'num' items in the range from
1416: 'lower' to 'upper'
1417:
1418: =cut
1419:
1420: #-------------------------------------------------------
1421: sub SUMMAX {
1422: my ($num,$lower,$upper)=@_;
1423: my $mask=&mask($lower,$upper);
1424: my @inside=();
1425: foreach (grep /$mask/,keys(%sheet_values)) {
1426: push (@inside,$sheet_values{$_});
1427: }
1428: @inside=sort(@inside);
1429: my $sum=0; my $i;
1430: for ($i=$#inside;(($i>$#inside-$num) && ($i>=0));$i--) {
1431: $sum+=$inside[$i];
1432: }
1433: return $sum;
1434: }
1435:
1436: #-------------------------------------------------------
1437:
1438: =item SUMMIN(num,lower,upper)
1439:
1440: compute the sum of the smallest 'num' items in the range from
1441: 'lower' to 'upper'
1442:
1443: =cut
1444:
1445: #-------------------------------------------------------
1446: sub SUMMIN {
1447: my ($num,$lower,$upper)=@_;
1448: my $mask=&mask($lower,$upper);
1449: my @inside=();
1450: foreach (grep /$mask/,keys(%sheet_values)) {
1451: $inside[$#inside+1]=$sheet_values{$_};
1452: }
1453: @inside=sort(@inside);
1454: my $sum=0; my $i;
1455: for ($i=0;(($i<$num) && ($i<=$#inside));$i++) {
1456: $sum+=$inside[$i];
1457: }
1458: return $sum;
1459: }
1460:
1461: #-------------------------------------------------------
1462:
1463: =item MINPARM(parametername)
1464:
1465: Returns the minimum value of the parameters matching the parametername.
1466: parametername should be a string such as 'duedate'.
1467:
1468: =cut
1469:
1470: #-------------------------------------------------------
1471: sub MINPARM {
1472: my ($expression) = @_;
1473: my $min = undef;
1474: study($expression);
1475: foreach $parameter (keys(%c)) {
1476: next if ($parameter !~ /$expression/);
1477: if ((! defined($min)) || ($min > $c{$parameter})) {
1478: $min = $c{$parameter}
1479: }
1480: }
1481: return $min;
1482: }
1483:
1484: #-------------------------------------------------------
1485:
1486: =item MAXPARM(parametername)
1487:
1488: Returns the maximum value of the parameters matching the input parameter name.
1489: parametername should be a string such as 'duedate'.
1490:
1491: =cut
1492:
1493: #-------------------------------------------------------
1494: sub MAXPARM {
1495: my ($expression) = @_;
1496: my $max = undef;
1497: study($expression);
1498: foreach $parameter (keys(%c)) {
1499: next if ($parameter !~ /$expression/);
1500: if ((! defined($min)) || ($max < $c{$parameter})) {
1501: $max = $c{$parameter}
1502: }
1503: }
1504: return $max;
1505: }
1506:
1507: sub calc {
1508: # $errorlog .= "\%t has ".(keys(%t))." keys\n";
1509: %sheet_values = %t; # copy %t into %sheet_values.
1510: # $errorlog .= "\%sheet_values has ".(keys(%sheet_values))." keys\n";
1511: my $notfinished=1;
1512: my $lastcalc='';
1513: my $depth=0;
1514: while ($notfinished) {
1515: $notfinished=0;
1516: while (my ($cell,$value) = each(%t)) {
1517: my $old=$sheet_values{$cell};
1518: $sheet_values{$cell}=eval $value;
1519: if ($@) {
1520: undef %sheet_values;
1521: return $cell.': '.$@;
1522: }
1523: if ($sheet_values{$cell} ne $old) {
1524: $notfinished=1;
1525: $lastcalc=$cell;
1526: }
1527: }
1528: $depth++;
1529: if ($depth>100) {
1530: undef %sheet_values;
1531: return $lastcalc.': Maximum calculation depth exceeded';
1532: }
1533: }
1534: return '';
1535: }
1536:
1537: # ------------------------------------------- End of "Inside of the safe space"
1538: ENDDEFS
1539: $safeeval->reval($code);
1540: return $safeeval;
1541: }
1542:
1543:
1544: #
1545: # expandnamed used to reside in the safe space
1546: #
1547: sub expandnamed {
1548: my $self = shift;
1549: my $expression=shift;
1550: if ($expression=~/^\&/) {
1551: my ($func,$var,$formula)=($expression=~/^\&(\w+)\(([^\;]+)\;(.*)\)/);
1552: my @vars=split(/\W+/,$formula);
1553: my %values=();
1554: foreach my $varname ( @vars ) {
1555: if ($varname=~/\D/) {
1556: $formula=~s/$varname/'$c{\''.$varname.'\'}'/ge;
1557: $varname=~s/$var/\([\\w:\\- ]\+\)/g;
1558: foreach (keys(%{$self->{'constants'}})) {
1559: if ($_=~/$varname/) {
1560: $values{$1}=1;
1561: }
1562: }
1563: }
1564: }
1565: if ($func eq 'EXPANDSUM') {
1566: my $result='';
1567: foreach (keys(%values)) {
1568: my $thissum=$formula;
1569: $thissum=~s/$var/$_/g;
1570: $result.=$thissum.'+';
1571: }
1572: $result=~s/\+$//;
1573: return $result;
1574: } else {
1575: return 0;
1576: }
1577: } else {
1578: # it is not a function, so it is a parameter name
1579: # We should do the following:
1580: # 1. Take the list of parameter names
1581: # 2. look through the list for ones that match the parameter we want
1582: # 3. If there are no collisions, return the one that matches
1583: # 4. If there is a collision, return 'bad parameter name error'
1584: my $returnvalue = '';
1585: my @matches = ();
1586: $#matches = -1;
1587: study $expression;
1588: my $parameter;
1589: foreach $parameter (keys(%{$self->{'constants'}})) {
1590: push @matches,$parameter if ($parameter =~ /$expression/);
1591: }
1592: if (scalar(@matches) == 0) {
1593: $returnvalue = 'unmatched parameter: '.$parameter;
1594: } elsif (scalar(@matches) == 1) {
1595: # why do we not do this lookup here, instead of delaying it?
1596: $returnvalue = '$c{\''.$matches[0].'\'}';
1597: } elsif (scalar(@matches) > 0) {
1598: # more than one match. Look for a concise one
1599: $returnvalue = "'non-unique parameter name : $expression'";
1600: foreach (@matches) {
1601: if (/^$expression$/) {
1602: # why do we not do this lookup here?
1603: $returnvalue = '$c{\''.$_.'\'}';
1604: }
1605: }
1606: } else {
1607: # There was a negative number of matches, which indicates
1608: # something is wrong with reality. Better warn the user.
1609: $returnvalue = 'bizzare parameter: '.$parameter;
1610: }
1611: return $returnvalue;
1612: }
1613: }
1614:
1615: #
1616: # sett used to reside in the safe space
1617: #
1618: sub sett {
1619: my $self = shift;
1620: my %t=();
1621: my $pattern='';
1622: if ($self->{'type'} eq 'assesscalc') {
1623: $pattern='A';
1624: } else {
1625: $pattern='[A-Z]';
1626: }
1627: # Deal with the template row
1628: foreach my $col ($self->template_cells()) {
1629: next if ($col=~/^$pattern/);
1630: foreach my $trow ($self->rows()) {
1631: # Get the name of this cell
1632: my $lb=$col.$trow;
1633: # Grab the template declaration
1634: $t{$lb}=$self->formula('template_'.$col);
1635: # Replace '#' with the row number
1636: $t{$lb}=~s/\#/$trow/g;
1637: # Replace '....' with ','
1638: $t{$lb}=~s/\.\.+/\,/g;
1639: # Replace 'A0' with the value from 'A0'
1640: $t{$lb}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
1641: # Replace parameters
1642: $t{$lb}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
1643: }
1644: }
1645: # Deal with the normal cells
1646: foreach ($self->formulas_keys()) {
1647: next if ($_=~/template\_/);
1648: if (($_=~/^$pattern(\d+)/) && ($1)) {
1649: if ($self->formula($_) !~ /^\!/) {
1650: $t{$_}=$self->{'constants'}->{$_};
1651: }
1652: } else {
1653: $t{$_}=$self->formula($_);
1654: $t{$_}=~s/\.\.+/\,/g;
1655: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
1656: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
1657: }
1658: }
1659: # For inserted lines, [B-Z] is also valid
1660: if ($self->{'type'} ne 'assesscalc') {
1661: foreach ($self->formulas_keys()) {
1662: next if ($_ !~ /[B-Z](\d+)/);
1663: next if ($self->formula('A'.$1) !~ /^[\~\-]/);
1664: $t{$_}=$self->formula($_);
1665: $t{$_}=~s/\.\.+/\,/g;
1666: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
1667: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
1668: }
1669: }
1670: # For some reason 'A0' gets special treatment... This seems superfluous
1671: # but I imagine it is here for a reason.
1672: $t{'A0'}=$self->formula('A0');
1673: $t{'A0'}=~s/\.\.+/\,/g;
1674: $t{'A0'}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
1675: $t{'A0'}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
1676: # Put %t into the safe space
1677: %{$self->{'safe'}->varglob('t')}=%t;
1678: }
1679:
1680:
1681: ###########################################
1682: ### Row output routines ###
1683: ###########################################
1684: #
1685: # get_row: Produce output row n from sheet by calling the appropriate routine
1686: #
1687: sub get_row {
1688: my $self = shift;
1689: my ($n) = @_;
1690: my ($rowlabel,@rowdata);
1691: if ($n eq '-') {
1692: ($rowlabel,@rowdata) = $self->templaterow();
1693: } elsif ($self->{'type'} eq 'studentcalc') {
1694: ($rowlabel,@rowdata) = $self->outrowassess($n);
1695: } else {
1696: ($rowlabel,@rowdata) = $self->outrow($n);
1697: }
1698: return ($rowlabel,@rowdata);
1699: }
1700:
1701: sub templaterow {
1702: my $self = shift;
1703: my @cols=();
1704: my $rowlabel = 'Template</td><td> ';
1705: foreach my $n ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1706: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1707: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1708: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1709: push(@cols,{ name => 'template_'.$_,
1710: formula => $self->formula('template_'.$n),
1711: value => $self->value('template_'.$n) });
1712: }
1713: return ($rowlabel,@cols);
1714: }
1715:
1716: sub outrowassess {
1717: my $self = shift;
1718: # $n is the current row number
1719: my ($n) = @_;
1720: my @cols=();
1721: my $rowlabel='';
1722: if ($n) {
1723: my ($usy,$ufn)=split(/__&&&\__/,$self->formula('A'.$n));
1724: if (exists($self->{'rowlabel'}->{$usy})) {
1725: # This is dumb, but we need the information when we output
1726: # the html version of the studentcalc spreadsheet for the
1727: # links to the assesscalc sheets.
1728: $rowlabel = $self->{'rowlabel'}->{$usy}.':'.
1729: &Apache::lonnet::escape($ufn);
1730: } else {
1731: $rowlabel = '';
1732: }
1733: } elsif ($ENV{'request.role'} =~ /^st\./) {
1734: $rowlabel = 'Summary</td><td>0';
1735: } else {
1736: $rowlabel = 'Export</td><td>0';
1737: }
1738: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1739: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1740: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1741: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1742: push(@cols,{ name => $_.$n,
1743: formula => $self->formula($_.$n),
1744: value => $self->value($_.$n)});
1745: }
1746: return ($rowlabel,@cols);
1747: }
1748:
1749: sub outrow {
1750: my $self = shift;
1751: my ($n)=@_;
1752: my @cols=();
1753: my $rowlabel;
1754: if ($n) {
1755: $rowlabel = $self->{'rowlabel'}->{$self->formula('A'.$n)};
1756: } else {
1757: if ($self->{'type'} eq 'classcalc') {
1758: $rowlabel = 'Summary</td><td>0';
1759: } else {
1760: $rowlabel = 'Export</td><td>0';
1761: }
1762: }
1763: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1764: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1765: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1766: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1767: push(@cols,{ name => $_.$n,
1768: formula => $self->formula($_.$n),
1769: value => $self->value($_.$n)});
1770: }
1771: return ($rowlabel,@cols);
1772: }
1773:
1774: ########################################################
1775: #### Spreadsheet calculation methods #####
1776: ########################################################
1777: #
1778: # calcsheet: makes all the calls to compute the spreadsheet.
1779: #
1780: sub calcsheet {
1781: my $self = shift;
1782: $self->sync_safe_space();
1783: $self->clear_errorlog();
1784: $self->sett();
1785: my $result = $self->{'safe'}->reval('&calc();');
1786: %{$self->{'values'}} = %{$self->{'safe'}->varglob('sheet_values')};
1787: # $self->logthis($self->get_errorlog());
1788: return $result;
1789: }
1790:
1791: ##
1792: ## sync_safe_space: Called by calcsheet to make sure all the data we
1793: # need to calculate is placed into the safe space
1794: ##
1795: sub sync_safe_space {
1796: my $self = shift;
1797: # Inside the safe space 'formulas' has a diabolical alter-ego named 'f'.
1798: %{$self->{'safe'}->varglob('f')}=%{$self->{'formulas'}};
1799: # 'constants' leads a peaceful hidden life of 'c'.
1800: %{$self->{'safe'}->varglob('c')}=%{$self->{'constants'}};
1801: # 'othersheets' hides as 'os', a disguise few can penetrate.
1802: @{$self->{'safe'}->varglob('os')}=@{$self->{'othersheets'}};
1803: }
1804:
1805: ##
1806: ## Retrieve the error log from the safe space (used for debugging)
1807: ##
1808: sub get_errorlog {
1809: my $self = shift;
1810: $self->{'errorlog'} = ${$self->{'safe'}->varglob('errorlog')};
1811: return $self->{'errorlog'};
1812: }
1813:
1814: ##
1815: ## Clear the error log inside the safe space
1816: ##
1817: sub clear_errorlog {
1818: my $self = shift;
1819: ${$self->{'safe'}->varglob('errorlog')} = '';
1820: $self->{'errorlog'} = '';
1821: }
1822:
1823:
1824: ########################################################
1825: #### Spreadsheet content retrieval/setting methods #####
1826: ########################################################
1827: ##
1828: ## constants: either set or get the constants
1829: ##
1830: ##
1831: sub constants {
1832: my $self=shift;
1833: my ($constants) = @_;
1834: if (defined($constants)) {
1835: if (! ref($constants)) {
1836: my %tmp = @_;
1837: $constants = \%tmp;
1838: }
1839: $self->{'constants'} = $constants;
1840: return;
1841: } else {
1842: return %{$self->{'constants'}};
1843: }
1844: }
1845:
1846: ##
1847: ## formulas: either set or get the formulas
1848: ##
1849: sub formulas {
1850: my $self=shift;
1851: my ($formulas) = @_;
1852: if (defined($formulas)) {
1853: if (! ref($formulas)) {
1854: my %tmp = @_;
1855: $formulas = \%tmp;
1856: }
1857: $self->{'formulas'} = $formulas;
1858: $self->{'rows'} = [];
1859: $self->{'template_cells'} = [];
1860: return;
1861: } else {
1862: return %{$self->{'formulas'}};
1863: }
1864: }
1865:
1866: ##
1867: ## formulas_keys: Return the keys to the formulas hash.
1868: ##
1869: sub formulas_keys {
1870: my $self = shift;
1871: my @keys = keys(%{$self->{'formulas'}});
1872: return keys(%{$self->{'formulas'}});
1873: }
1874:
1875: ##
1876: ## formula: Return the formula for a given cell in the spreadsheet
1877: ## returns '' if the cell does not have a formula or does not exist
1878: ##
1879: sub formula {
1880: my $self = shift;
1881: my $cell = shift;
1882: if (defined($cell) && exists($self->{'formulas'}->{$cell})) {
1883: return $self->{'formulas'}->{$cell};
1884: }
1885: return '';
1886: }
1887:
1888: ##
1889: ## logthis: write the input to lonnet.log
1890: ##
1891: sub logthis {
1892: my $self = shift;
1893: my $message = shift;
1894: &Apache::lonnet::logthis($self->{'type'}.':'.
1895: $self->{'uname'}.':'.$self->{'udom'}.':'.
1896: $message);
1897: return;
1898: }
1899:
1900: ##
1901: ## dump_formulas_to_log: makes lonnet.log huge...
1902: ##
1903: sub dump_formulas_to_log {
1904: my $self =shift;
1905: $self->logthis("Spreadsheet formulas");
1906: $self->logthis("--------------------------------------------------------");
1907: while (my ($cell, $formula) = each(%{$self->{'formulas'}})) {
1908: $self->logthis(' '.$cell.' = '.$formula);
1909: }
1910: $self->logthis("--------------------------------------------------------");}
1911:
1912: ##
1913: ## value: returns the computed value of a particular cell
1914: ##
1915: sub value {
1916: my $self = shift;
1917: my $cell = shift;
1918: if (defined($cell) && exists($self->{'values'}->{$cell})) {
1919: return $self->{'values'}->{$cell};
1920: }
1921: return '';
1922: }
1923:
1924: ##
1925: ## dump_values_to_log: makes lonnet.log huge...
1926: ##
1927: sub dump_values_to_log {
1928: my $self =shift;
1929: $self->logthis("Spreadsheet Values");
1930: $self->logthis("--------------------------------------------------------");
1931: while (my ($cell, $value) = each(%{$self->{'values'}})) {
1932: $self->logthis(' '.$cell.' = '.$value);
1933: }
1934: $self->logthis("--------------------------------------------------------");}
1935:
1936: ##
1937: ## Yet another debugging function
1938: ##
1939: sub dump_hash_to_log {
1940: my $self= shift();
1941: my %tmp = @_;
1942: if (@_<2) {
1943: %tmp = %{$_[0]};
1944: }
1945: $self->logthis('---------------------------- (entries end with ":"');
1946: while (my ($key,$val) = each (%tmp)) {
1947: $self->logthis($key.' = '.$val.':');
1948: }
1949: $self->logthis('---------------------------- (entries end with ":"');
1950: }
1951:
1952: ################################
1953: ## Helper functions ##
1954: ################################
1955: ##
1956: ## rebuild_stats: rebuilds the rows and template_cells arrays
1957: ##
1958: sub rebuild_stats {
1959: my $self = shift;
1960: $self->{'rows'}=[];
1961: $self->{'template_cells'}=[];
1962: foreach my $cell($self->formulas_keys()) {
1963: push(@{$self->{'rows'}},$1) if ($cell =~ /^A(\d+)/ && $1 != 0);
1964: push(@{$self->{'template_cells'}},$1) if ($cell =~ /^template_(\w+)/);
1965: }
1966: return;
1967: }
1968:
1969: ##
1970: ## template_cells returns a list of the cells defined in the template row
1971: ##
1972: sub template_cells {
1973: my $self = shift;
1974: $self->rebuild_stats() if (!@{$self->{'template_cells'}});
1975: return @{$self->{'template_cells'}};
1976: }
1977:
1978: ##
1979: ## rows returns a list of the names of cells defined in the A column
1980: ##
1981: sub rows {
1982: my $self = shift;
1983: $self->rebuild_stats() if (!@{$self->{'rows'}});
1984: return @{$self->{'rows'}};
1985: }
1986:
1987: ##
1988: ## Sigh....
1989: ##
1990: sub setothersheets {
1991: my $self = shift;
1992: my @othersheets = @_;
1993: $self->{'othersheets'} = \@othersheets;
1994: }
1995:
1996: ##
1997: ## rowlabels: get or set the rowlabels hash from the spreadsheet.
1998: ##
1999: sub rowlabels {
2000: my $self = shift;
2001: my ($rowlabel) = @_;
2002: if (defined($rowlabel)) {
2003: if (! ref($rowlabel)) {
2004: my %tmp = @_;
2005: $rowlabel = \%tmp;
2006: }
2007: $self->{'rowlabel'}=$rowlabel;
2008: return;
2009: } else {
2010: return %{$self->{'rowlabel'}} if (defined($self->{'rowlabel'}));
2011: }
2012: }
2013:
2014: ##
2015: ## gettitle: returns a title for the spreadsheet.
2016: ##
2017: sub gettitle {
2018: my $self = shift;
2019: if ($self->{'type'} eq 'classcalc') {
2020: return $self->{'coursedesc'};
2021: } elsif ($self->{'type'} eq 'studentcalc') {
2022: return 'Grades for '.$self->{'uname'}.'@'.$self->{'udom'};
2023: } elsif ($self->{'type'} eq 'assesscalc') {
2024: if (($self->{'usymb'} eq '_feedback') ||
2025: ($self->{'usymb'} eq '_evaluation') ||
2026: ($self->{'usymb'} eq '_discussion') ||
2027: ($self->{'usymb'} eq '_tutoring')) {
2028: my $title = $self->{'usymb'};
2029: $title =~ s/^_//;
2030: $title = ucfirst($title);
2031: return $title;
2032: }
2033: return if (! defined($self->{'mapid'}) ||
2034: $self->{'mapid'} !~ /^\d+$/);
2035: my $mapid = $self->{'mapid'};
2036: return if (! defined($self->{'resid'}) ||
2037: $self->{'resid'} !~ /^\d+$/);
2038: my $resid = $self->{'resid'};
2039: my %course_db;
2040: tie(%course_db,'GDBM_File',$self->{'coursefilename'}.'.db',
2041: &GDBM_READER(),0640);
2042: return if (! tied(%course_db));
2043: my $key = 'title_'.$mapid.'.'.$resid;
2044: my $title = '';
2045: if (exists($course_db{$key})) {
2046: $title = $course_db{$key};
2047: } else {
2048: $title = $self->{'usymb'};
2049: }
2050: untie (%course_db);
2051: return $title;
2052: }
2053: }
2054:
2055: #
2056: # Export of A-row
2057: #
2058: sub exportdata {
2059: my $self=shift;
2060: my @exportarray=();
2061: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
2062: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
2063: push(@exportarray,$self->value($_.'0'));
2064: }
2065: return @exportarray;
2066: }
2067:
2068: ##
2069: ## update_student_sheet: experimental function
2070: ##
2071: sub update_student_sheet{
2072: my $self = shift;
2073: my ($r,$c) = @_;
2074: # Load in the studentcalc sheet
2075: $self->readsheet('default_studentcalc');
2076: # Determine the structure (contained assessments, etc) of the sheet
2077: $self->updatesheet();
2078: # Load in the cached sheets for this student
2079: $self->cachedssheets();
2080: # Load in the (possibly cached) data from the assessment sheets
2081: $self->loadstudent($r,$c);
2082: # Compute the sheet
2083: $self->calcsheet();
2084: }
2085:
2086: #
2087: # sort_indicies: returns an ordered list of the rows of the spreadsheet
2088: #
2089: sub sort_indicies {
2090: my $self = shift;
2091: my @sortidx=();
2092: #
2093: if ($self->{'type'} eq 'classcalc') {
2094: my @sortby=(undef);
2095: # Skip row 0
2096: for (my $row=1;$row<=$self->{'maxrow'};$row++) {
2097: my (undef,$sname,$sdom,$fullname,$section,$id) =
2098: split(':',$self->{'rowlabel'}->{$self->formula('A'.$row)});
2099: push (@sortby, lc($fullname));
2100: push (@sortidx, $row);
2101: }
2102: @sortidx = sort { $sortby[$a] cmp $sortby[$b]; } @sortidx;
2103: } elsif ($self->{'type'} eq 'studentcalc') {
2104: my @sortby1=(undef);
2105: my @sortby2=(undef);
2106: # Skip row 0
2107: for (my $row=1;$row<=$self->{'maxrow'};$row++) {
2108: my ($key,undef) = split(/__&&&\__/,$self->formula('A'.$row));
2109: my $rowlabel = $self->{'rowlabel'}->{$key};
2110: my (undef,$symb,$mapid,$resid,$title,$ufn) =
2111: split(':',$rowlabel);
2112: $ufn = &Apache::lonnet::unescape($ufn);
2113: $symb = &Apache::lonnet::unescape($symb);
2114: $title = &Apache::lonnet::unescape($title);
2115: my ($sequence) = ($symb =~ /\/([^\/]*\.sequence)/);
2116: if ($sequence eq '') {
2117: $sequence = $symb;
2118: }
2119: push (@sortby1, $sequence);
2120: push (@sortby2, $title);
2121: push (@sortidx, $row);
2122: }
2123: @sortidx = sort { $sortby1[$a] cmp $sortby1[$b] ||
2124: $sortby2[$a] cmp $sortby2[$b] } @sortidx;
2125: } else {
2126: my @sortby=(undef);
2127: # Skip row 0
2128: $self->sync_safe_space();
2129: for (my $row=1;$row<=$self->{'maxrow'};$row++) {
2130: push (@sortby, $self->{'safe'}->reval('$f{"A'.$row.'"}'));
2131: push (@sortidx, $row);
2132: }
2133: @sortidx = sort { $sortby[$a] cmp $sortby[$b]; } @sortidx;
2134: }
2135: return @sortidx;
2136: }
2137:
2138: #############################################################
2139: ### ###
2140: ### Spreadsheet Output Routines ###
2141: ### ###
2142: #############################################################
2143:
2144: ############################################
2145: ## HTML output routines ##
2146: ############################################
2147: sub html_editable_cell {
2148: my ($cell,$bgcolor) = @_;
2149: my $result;
2150: my ($name,$formula,$value);
2151: if (defined($cell)) {
2152: $name = $cell->{'name'};
2153: $formula = $cell->{'formula'};
2154: $value = $cell->{'value'};
2155: }
2156: $name = '' if (! defined($name));
2157: $formula = '' if (! defined($formula));
2158: if (! defined($value)) {
2159: $value = '<font color="'.$bgcolor.'">#</font>';
2160: if ($formula ne '') {
2161: $value = '<i>undefined value</i>';
2162: }
2163: } elsif ($value =~ /^\s*$/ ) {
2164: $value = '<font color="'.$bgcolor.'">#</font>';
2165: } else {
2166: $value = &HTML::Entities::encode($value) if ($value !~/ /);
2167: }
2168: # Make the formula safe for outputting
2169: $formula =~ s/\'/\"/g;
2170: # The formula will be parsed by the browser *twice* before being
2171: # displayed to the user for editing.
2172: $formula = &HTML::Entities::encode(&HTML::Entities::encode($formula));
2173: # Escape newlines so they make it into the edit window
2174: $formula =~ s/\n/\\n/gs;
2175: # Glue everything together
2176: $result .= "<a href=\"javascript:celledit(\'".
2177: $name."','".$formula."');\">".$value."</a>";
2178: return $result;
2179: }
2180:
2181: sub html_uneditable_cell {
2182: my ($cell,$bgcolor) = @_;
2183: my $value = (defined($cell) ? $cell->{'value'} : '');
2184: $value = &HTML::Entities::encode($value) if ($value !~/ /);
2185: return ' '.$value.' ';
2186: }
2187:
2188: sub outsheet_html {
2189: my $self = shift;
2190: my ($r) = @_;
2191: my ($num_uneditable,$realm,$row_type);
2192: my $requester_is_student = ($ENV{'request.role'} =~ /^st\./);
2193: if ($self->{'type'} eq 'assesscalc') {
2194: $num_uneditable = 1;
2195: $realm = 'Assessment';
2196: $row_type = 'Item';
2197: } elsif ($self->{'type'} eq 'studentcalc') {
2198: $num_uneditable = 26;
2199: $realm = 'User';
2200: $row_type = 'Assessment';
2201: } elsif ($self->{'type'} eq 'classcalc') {
2202: $num_uneditable = 26;
2203: $realm = 'Course';
2204: $row_type = 'Student';
2205: } else {
2206: return; # error
2207: }
2208: ####################################
2209: # Print out header table
2210: ####################################
2211: my $num_left = 52-$num_uneditable;
2212: my $tabledata =<<"END";
2213: <table border="2">
2214: <tr>
2215: <th colspan="2" rowspan="2"><font size="+2">$realm</font></th>
2216: <td bgcolor="#FFDDDD" colspan="$num_uneditable">
2217: <b><font size="+1">Import</font></b></td>
2218: <td colspan="$num_left">
2219: <b><font size="+1">Calculations</font></b></td>
2220: </tr><tr>
2221: END
2222: my $label_num = 0;
2223: foreach (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')){
2224: if ($label_num<$num_uneditable) {
2225: $tabledata.='<td bgcolor="#FFDDDD">';
2226: } else {
2227: $tabledata.='<td>';
2228: }
2229: $tabledata.="<b><font size=+1>$_</font></b></td>";
2230: $label_num++;
2231: }
2232: $tabledata.="</tr>\n";
2233: $r->print($tabledata);
2234: ####################################
2235: # Print out template row
2236: ####################################
2237: my ($num_cols_output,$row_html,$rowlabel,@rowdata);
2238:
2239: if (! $requester_is_student) {
2240: ($rowlabel,@rowdata) = $self->get_row('-');
2241: $row_html = '<tr><td>'.$self->format_html_rowlabel($rowlabel).'</td>';
2242: $num_cols_output = 0;
2243: foreach my $cell (@rowdata) {
2244: if ($requester_is_student ||
2245: $num_cols_output++ < $num_uneditable) {
2246: $row_html .= '<td bgcolor="#FFDDDD">';
2247: $row_html .= &html_uneditable_cell($cell,'#FFDDDD');
2248: } else {
2249: $row_html .= '<td bgcolor="#EOFFDD">';
2250: $row_html .= &html_editable_cell($cell,'#E0FFDD');
2251: }
2252: $row_html .= '</td>';
2253: }
2254: $row_html.= "</tr>\n";
2255: $r->print($row_html);
2256: }
2257: ####################################
2258: # Print out summary/export row
2259: ####################################
2260: ($rowlabel,@rowdata) = $self->get_row('0');
2261: $row_html = '<tr><td>'.$self->format_html_rowlabel($rowlabel).'</td>';
2262: $num_cols_output = 0;
2263: foreach my $cell (@rowdata) {
2264: if ($num_cols_output++ < 26 && ! $requester_is_student) {
2265: $row_html .= '<td bgcolor="#CCCCFF">';
2266: $row_html .= &html_editable_cell($cell,'#CCCCFF');
2267: } else {
2268: $row_html .= '<td bgcolor="#DDCCFF">';
2269: $row_html .= &html_uneditable_cell($cell,'#CCCCFF');
2270: }
2271: $row_html .= '</td>';
2272: }
2273: $row_html.= "</tr>\n";
2274: $r->print($row_html);
2275: $r->print('</table>');
2276: ####################################
2277: # Prepare to output rows
2278: ####################################
2279: my @Rows = $self->sort_indicies();
2280: #
2281: # Loop through the rows and output them one at a time
2282: my $rows_output=0;
2283: foreach my $rownum (@Rows) {
2284: my ($rowlabel,@rowdata) = $self->get_row($rownum);
2285: next if ($rowlabel =~ /^\s*$/);
2286: next if (($self->{'type'} eq 'assesscalc') &&
2287: (! $ENV{'form.showall'}) &&
2288: ($rowdata[0]->{'value'} =~ /^\s*$/));
2289: if (! $ENV{'form.showall'} &&
2290: $self->{'type'} =~ /^(studentcalc|classcalc)$/) {
2291: my $row_is_empty = 1;
2292: foreach my $cell (@rowdata) {
2293: if ($cell->{'value'} !~ /^\s*$/) {
2294: $row_is_empty = 0;
2295: last;
2296: }
2297: }
2298: next if ($row_is_empty);
2299: }
2300: #
2301: my $defaultbg='#E0FF';
2302: #
2303: my $row_html ="\n".'<tr><td><b><font size=+1>'.$rownum.
2304: '</font></b></td>';
2305: #
2306: if ($self->{'type'} eq 'classcalc') {
2307: $row_html.='<td>'.$self->format_html_rowlabel($rowlabel).'</td>';
2308: # Output links for each student?
2309: # Nope, that is already done for us in format_html_rowlabel
2310: # (for now)
2311: } elsif ($self->{'type'} eq 'studentcalc') {
2312: my $ufn = (split(/:/,$rowlabel))[5];
2313: $row_html.='<td>'.$self->format_html_rowlabel($rowlabel);
2314: $row_html.= '<br>'.
2315: '<select name="sel_'.$rownum.'" '.
2316: 'onChange="changesheet('.$rownum.')">'.
2317: '<option name="default">Default</option>';
2318: foreach (@{$self->{'othersheets'}}) {
2319: $row_html.='<option name="'.$_.'"';
2320: if ($ufn eq $_) {
2321: $row_html.=' selected';
2322: }
2323: $row_html.='>'.$_.'</option>';
2324: }
2325: $row_html.='</select></td>';
2326: } elsif ($self->{'type'} eq 'assesscalc') {
2327: $row_html.='<td>'.$self->format_html_rowlabel($rowlabel).'</td>';
2328: }
2329: #
2330: my $shown_cells = 0;
2331: foreach my $cell (@rowdata) {
2332: my $value = $cell->{'value'};
2333: my $formula = $cell->{'formula'};
2334: my $cellname = $cell->{'name'};
2335: #
2336: my $bgcolor;
2337: if ($shown_cells && ($shown_cells/5 == int($shown_cells/5))) {
2338: $bgcolor = $defaultbg.'99';
2339: } else {
2340: $bgcolor = $defaultbg.'DD';
2341: }
2342: $bgcolor='#FFDDDD' if ($shown_cells < $num_uneditable);
2343: #
2344: $row_html.='<td bgcolor='.$bgcolor.'>';
2345: if ($requester_is_student || $shown_cells < $num_uneditable) {
2346: $row_html .= &html_uneditable_cell($cell,$bgcolor);
2347: } else {
2348: $row_html .= &html_editable_cell($cell,$bgcolor);
2349: }
2350: $row_html.='</td>';
2351: $shown_cells++;
2352: }
2353: if ($row_html) {
2354: if ($rows_output % 25 == 0) {
2355: $r->print("</table>\n<br>\n");
2356: $r->rflush();
2357: $r->print('<table border=2>'.
2358: '<tr><td> <td>'.$row_type.'</td>'.
2359: '<td>'.
2360: join('</td><td>',
2361: (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
2362: 'abcdefghijklmnopqrstuvwxyz'))).
2363: "</td></tr>\n");
2364: }
2365: $rows_output++;
2366: $r->print($row_html);
2367: }
2368: }
2369: #
2370: $r->print('</table>');
2371: #
2372: # Debugging code (be sure to uncomment errorlog code in safe space):
2373: #
2374: # $r->print("\n<pre>");
2375: # $r->print(&geterrorlog($self));
2376: # $r->print("\n</pre>");
2377: return 1;
2378: }
2379:
2380: ############################################
2381: ## csv output routines ##
2382: ############################################
2383: sub outsheet_csv {
2384: my $self = shift;
2385: my ($r) = @_;
2386: my $csvdata = '';
2387: my @Values;
2388: ####################################
2389: # Prepare to output rows
2390: ####################################
2391: my @Rows = $self->sort_indicies();
2392: #
2393: # Loop through the rows and output them one at a time
2394: my $rows_output=0;
2395: foreach my $rownum (@Rows) {
2396: my ($rowlabel,@rowdata) = $self->get_row($rownum);
2397: next if ($rowlabel =~ /^\s*$/);
2398: push (@Values,$self->format_csv_rowlabel($rowlabel));
2399: foreach my $cell (@rowdata) {
2400: push (@Values,'"'.$cell->{'value'}.'"');
2401: }
2402: $csvdata.= join(',',@Values)."\n";
2403: @Values = ();
2404: }
2405: #
2406: # Write the CSV data to a file and serve up a link
2407: #
2408: my $filename = '/prtspool/'.
2409: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
2410: time.'_'.rand(1000000000).'.csv';
2411: my $file;
2412: unless ($file = Apache::File->new('>'.'/home/httpd'.$filename)) {
2413: $r->log_error("Couldn't open $filename for output $!");
2414: $r->print("Problems occured in writing the csv file. ".
2415: "This error has been logged. ".
2416: "Please alert your LON-CAPA administrator.");
2417: $r->print("<pre>\n".$csvdata."</pre>\n");
2418: return 0;
2419: }
2420: print $file $csvdata;
2421: close($file);
2422: $r->print('<br /><br />'.
2423: '<a href="'.$filename.'">Your CSV spreadsheet.</a>'."\n");
2424: #
2425: return 1;
2426: }
2427:
2428: ############################################
2429: ## Excel output routines ##
2430: ############################################
2431: sub outsheet_recursive_excel {
2432: my $self = shift;
2433: my ($r) = @_;
2434: my $c = $r->connection;
2435: return undef if ($self->{'type'} ne 'classcalc');
2436: my ($workbook,$filename) = $self->create_excel_spreadsheet($r);
2437: return undef if (! defined($workbook));
2438: #
2439: # Create main worksheet
2440: my $main_worksheet = $workbook->addworksheet('main');
2441: #
2442: # Figure out who the students are
2443: my %f=$self->formulas();
2444: my $count = 0;
2445: $r->print(<<END);
2446: <p>
2447: Compiling Excel Workbook with a worksheet for each student.
2448: </p><p>
2449: This operation may take longer than a complete recalculation of the
2450: spreadsheet.
2451: </p><p>
2452: To abort this operation, hit the stop button on your browser.
2453: </p><p>
2454: A link to the spreadsheet will be available at the end of this process.
2455: </p>
2456: <p>
2457: END
2458: $r->rflush();
2459: my $starttime = time;
2460: foreach my $rownum ($self->sort_indicies()) {
2461: $count++;
2462: my ($sname,$sdom) = split(':',$f{'A'.$rownum});
2463: my $student_excel_worksheet=$workbook->addworksheet($sname.'@'.$sdom);
2464: # Create a new spreadsheet
2465: my $studentsheet = &Apache::lonspreadsheet::Spreadsheet->new
2466: ($sname,$sdom,'studentcalc',undef);
2467: # Read in the spreadsheet definition
2468: $studentsheet->update_student_sheet($r,$c);
2469: # Stuff the sheet into excel
2470: $studentsheet->export_sheet_as_excel($student_excel_worksheet);
2471: my $totaltime = int((time - $starttime) / $count * $self->{'maxrow'});
2472: my $timeleft = int((time - $starttime) / $count * ($self->{'maxrow'} - $count));
2473: if ($count % 5 == 0) {
2474: $r->print($count.' students completed.'.
2475: ' Time remaining: '.$timeleft.' sec. '.
2476: ' Estimated total time: '.$totaltime." sec <br />\n");
2477: $r->rflush();
2478: }
2479: if(defined($c) && ($c->aborted())) {
2480: last;
2481: }
2482: }
2483: #
2484: if(! $c->aborted() ) {
2485: $r->print('All students spreadsheets completed!<br />');
2486: $r->rflush();
2487: #
2488: # &export_sheet_as_excel fills $worksheet with the data from $sheet
2489: $self->export_sheet_as_excel($main_worksheet);
2490: #
2491: $workbook->close();
2492: # Okay, the spreadsheet is taken care of, so give the user a link.
2493: $r->print('<br /><br />'.
2494: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
2495: } else {
2496: $workbook->close(); # Not sure how necessary this is.
2497: #unlink('/home/httpd'.$filename); # No need to keep this around?
2498: }
2499: return 1;
2500: }
2501:
2502: sub outsheet_excel {
2503: my $self = shift;
2504: my ($r) = @_;
2505: my ($workbook,$filename) = $self->create_excel_spreadsheet($r);
2506: return undef if (! defined($workbook));
2507: my $sheetname;
2508: if ($self->{'type'} eq 'classcalc') {
2509: $sheetname = 'Main';
2510: } elsif ($self->{'type'} eq 'studentcalc') {
2511: $sheetname = $self->{'uname'}.'@'.$self->{'udom'};
2512: } elsif ($self->{'type'} eq 'assesscalc') {
2513: $sheetname = $self->{'uname'}.'@'.$self->{'udom'}.' assessment';
2514: }
2515: my $worksheet = $workbook->addworksheet($sheetname);
2516: #
2517: # &export_sheet_as_excel fills $worksheet with the data from $sheet
2518: $self->export_sheet_as_excel($worksheet);
2519: #
2520: $workbook->close();
2521: # Okay, the spreadsheet is taken care of, so give the user a link.
2522: $r->print('<br /><br />'.
2523: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
2524: return 1;
2525: }
2526:
2527: sub create_excel_spreadsheet {
2528: my $self = shift;
2529: my ($r) = @_;
2530: my $filename = '/prtspool/'.
2531: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
2532: time.'_'.rand(1000000000).'.xls';
2533: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
2534: if (! defined($workbook)) {
2535: $r->log_error("Error creating excel spreadsheet $filename: $!");
2536: $r->print("Problems creating new Excel file. ".
2537: "This error has been logged. ".
2538: "Please alert your LON-CAPA administrator");
2539: return undef;
2540: }
2541: #
2542: # The excel spreadsheet stores temporary data in files, then put them
2543: # together. If needed we should be able to disable this (memory only).
2544: # The temporary directory must be specified before calling 'addworksheet'.
2545: # File::Temp is used to determine the temporary directory.
2546: $workbook->set_tempdir('/home/httpd/perl/tmp');
2547: #
2548: # Determine the name to give the worksheet
2549: return ($workbook,$filename);
2550: }
2551:
2552: sub export_sheet_as_excel {
2553: my $self = shift;
2554: my $worksheet = shift;
2555: #
2556: my $rows_output = 0;
2557: my $cols_output = 0;
2558: ####################################
2559: # Write an identifying row #
2560: ####################################
2561: my @Headerinfo = ($self->{'coursedesc'});
2562: my $title = $self->gettitle();
2563: $cols_output = 0;
2564: if (defined($title)) {
2565: $worksheet->write($rows_output++,$cols_output++,$title);
2566: }
2567: ####################################
2568: # Write the summary/export row #
2569: ####################################
2570: my ($rowlabel,@rowdata) = &get_row($self,'0');
2571: my $label = &format_excel_rowlabel($self,$rowlabel);
2572: $cols_output = 0;
2573: $worksheet->write($rows_output,$cols_output++,$label);
2574: foreach my $cell (@rowdata) {
2575: $worksheet->write($rows_output,$cols_output++,$cell->{'value'});
2576: }
2577: $rows_output+= 2; # Skip a row, just for fun
2578: ####################################
2579: # Prepare to output rows
2580: ####################################
2581: my @Rows = &sort_indicies($self);
2582: #
2583: # Loop through the rows and output them one at a time
2584: foreach my $rownum (@Rows) {
2585: my ($rowlabel,@rowdata) = &get_row($self,$rownum);
2586: next if ($rowlabel =~ /^[\s]*$/);
2587: $cols_output = 0;
2588: my $label = &format_excel_rowlabel($self,$rowlabel);
2589: if ( ! $ENV{'form.showall'} &&
2590: $self->{'type'} =~ /^(studentcalc|classcalc)$/) {
2591: my $row_is_empty = 1;
2592: foreach my $cell (@rowdata) {
2593: if ($cell->{'value'} !~ /^\s*$/) {
2594: $row_is_empty = 0;
2595: last;
2596: }
2597: }
2598: next if ($row_is_empty);
2599: }
2600: $worksheet->write($rows_output,$cols_output++,$rownum);
2601: $worksheet->write($rows_output,$cols_output++,$label);
2602: if (ref($label)) {
2603: $cols_output = (scalar(@$label));
2604: }
2605: foreach my $cell (@rowdata) {
2606: $worksheet->write($rows_output,$cols_output++,$cell->{'value'});
2607: }
2608: $rows_output++;
2609: }
2610: return;
2611: }
2612:
2613: ############################################
2614: ## XML output routines ##
2615: ############################################
2616: sub outsheet_xml {
2617: my $self = shift;
2618: my ($r) = @_;
2619: ## Someday XML
2620: ## Will be rendered for the user
2621: ## But not on this day
2622: }
2623:
2624: ##
2625: ## Outsheet - calls other outsheet_* functions
2626: ##
2627: sub outsheet {
2628: my $self = shift;
2629: my ($r)=@_;
2630: if (! exists($ENV{'form.output'})) {
2631: $ENV{'form.output'} = 'HTML';
2632: }
2633: if (lc($ENV{'form.output'}) eq 'csv') {
2634: $self->outsheet_csv($r);
2635: } elsif (lc($ENV{'form.output'}) eq 'excel') {
2636: $self->outsheet_excel($r);
2637: } elsif (lc($ENV{'form.output'}) eq 'recursive excel') {
2638: $self->outsheet_recursive_excel($r);
2639: # } elsif (lc($ENV{'form.output'}) eq 'xml' ) {
2640: # $self->outsheet_xml($r);
2641: } else {
2642: $self->outsheet_html($r);
2643: }
2644: }
2645:
2646: #
2647: # othersheets: Returns the list of other spreadsheets available
2648: #
2649: sub othersheets {
2650: my $self = shift;
2651: my ($stype)=@_;
2652: $stype = $self->{'type'} if (! defined($stype));
2653: #
2654: my $cnum = $self->{'cnum'};
2655: my $cdom = $self->{'cdom'};
2656: my $chome = $self->{'chome'};
2657: #
2658: my @alternatives=();
2659: my %results=&Apache::lonnet::dump($stype.'_spreadsheets',$cdom,$cnum);
2660: my ($tmp) = keys(%results);
2661: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
2662: @alternatives = sort (keys(%results));
2663: }
2664: return @alternatives;
2665: }
2666:
2667: #
2668: # Parse a spreadsheet
2669: #
2670: sub parse_sheet {
2671: # $sheetxml is a scalar reference or a scalar
2672: my ($sheetxml) = @_;
2673: if (! ref($sheetxml)) {
2674: my $tmp = $sheetxml;
2675: $sheetxml = \$tmp;
2676: }
2677: my %f;
2678: my $parser=HTML::TokeParser->new($sheetxml);
2679: my $token;
2680: while ($token=$parser->get_token) {
2681: if ($token->[0] eq 'S') {
2682: if ($token->[1] eq 'field') {
2683: $f{$token->[2]->{'col'}.$token->[2]->{'row'}}=
2684: $parser->get_text('/field');
2685: }
2686: if ($token->[1] eq 'template') {
2687: $f{'template_'.$token->[2]->{'col'}}=
2688: $parser->get_text('/template');
2689: }
2690: }
2691: }
2692: return \%f;
2693: }
2694:
2695: sub readsheet {
2696: my $self = shift;
2697: my ($fn)=@_;
2698: #
2699: my $stype = $self->{'type'};
2700: my $cnum = $self->{'cnum'};
2701: my $cdom = $self->{'cdom'};
2702: my $chome = $self->{'chome'};
2703: #
2704: if (! defined($fn)) {
2705: # There is no filename. Look for defaults in course and global, cache
2706: unless ($fn=$defaultsheets{$cnum.'_'.$cdom.'_'.$stype}) {
2707: my %tmphash = &Apache::lonnet::get('environment',
2708: ['spreadsheet_default_'.$stype],
2709: $cdom,$cnum);
2710: my ($tmp) = keys(%tmphash);
2711: if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
2712: $fn = 'default_'.$stype;
2713: } else {
2714: $fn = $tmphash{'spreadsheet_default_'.$stype};
2715: }
2716: unless (($fn) && ($fn!~/^error\:/)) {
2717: $fn='default_'.$stype;
2718: }
2719: $defaultsheets{$cnum.'_'.$cdom.'_'.$stype}=$fn;
2720: }
2721: }
2722: # $fn now has a value
2723: $self->{'filename'} = $fn;
2724: # see if sheet is cached
2725: if (exists($spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn})) {
2726:
2727: my %tmp = split(/___;___/,
2728: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn});
2729: $self->formulas(\%tmp);
2730: } else {
2731: # Not cached, need to read
2732: my %f=();
2733: if ($fn=~/^default\_/) {
2734: my $sheetxml='';
2735: my $fh;
2736: my $dfn=$fn;
2737: $dfn=~s/\_/\./g;
2738: if ($fh=Apache::File->new($includedir.'/'.$dfn)) {
2739: $sheetxml=join('',<$fh>);
2740: } else {
2741: # $sheetxml='<field row="0" col="A">"Error"</field>';
2742: $sheetxml='<field row="0" col="A"></field>';
2743: }
2744: %f=%{&parse_sheet(\$sheetxml)};
2745: } elsif($fn=~/\/*\.spreadsheet$/) {
2746: my $sheetxml=&Apache::lonnet::getfile
2747: (&Apache::lonnet::filelocation('',$fn));
2748: if ($sheetxml == -1) {
2749: $sheetxml='<field row="0" col="A">"Error loading spreadsheet '
2750: .$fn.'"</field>';
2751: }
2752: %f=%{&parse_sheet(\$sheetxml)};
2753: } else {
2754: my %tmphash = &Apache::lonnet::dump($fn,$cdom,$cnum);
2755: my ($tmp) = keys(%tmphash);
2756: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
2757: foreach (keys(%tmphash)) {
2758: $f{$_}=$tmphash{$_};
2759: }
2760: } else {
2761: # Unable to grab the specified spreadsheet,
2762: # so we get the default ones instead.
2763: $fn = 'default_'.$stype;
2764: $self->{'filename'} = $fn;
2765: my $dfn = $fn;
2766: $dfn =~ s/\_/\./g;
2767: my $sheetxml;
2768: if (my $fh=Apache::File->new($includedir.'/'.$dfn)) {
2769: $sheetxml = join('',<$fh>);
2770: } else {
2771: $sheetxml='<field row="0" col="A">'.
2772: '"Unable to load spreadsheet"</field>';
2773: }
2774: %f=%{&parse_sheet(\$sheetxml)};
2775: }
2776: }
2777: # Cache and set
2778: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
2779: $self->formulas(\%f);
2780: }
2781: }
2782:
2783: # ------------------------------------------------------------ Save spreadsheet
2784: sub writesheet {
2785: my $self = shift;
2786: my ($makedef)=@_;
2787: my $cid=$self->{'cid'};
2788: if (&Apache::lonnet::allowed('opa',$cid)) {
2789: my %f=$self->formulas();
2790: my $stype= $self->{'type'};
2791: my $cnum = $self->{'cnum'};
2792: my $cdom = $self->{'cdom'};
2793: my $chome= $self->{'chome'};
2794: my $fn = $self->{'filename'};
2795: # Cache new sheet
2796: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
2797: # Write sheet
2798: foreach (keys(%f)) {
2799: delete($f{$_}) if ($f{$_} eq 'import');
2800: }
2801: my $reply = &Apache::lonnet::put($fn,\%f,$cdom,$cnum);
2802: if ($reply eq 'ok') {
2803: $reply = &Apache::lonnet::put($stype.'_spreadsheets',
2804: {$fn => $ENV{'user.name'}.'@'.$ENV{'user.domain'}},
2805: $cdom,$cnum);
2806: if ($reply eq 'ok') {
2807: if ($makedef) {
2808: $reply = &Apache::lonnet::put('environment',
2809: {'spreadsheet_default_'.$stype => $fn },
2810: $cdom,$cnum);
2811: if ($reply eq 'ok' &&
2812: ($self->{'type'} eq 'studentcalc' ||
2813: $self->{'type'} eq 'assesscalc')) {
2814: # Expire the spreadsheets of the other students.
2815: &Apache::lonnet::expirespread('','','studentcalc','');
2816: }
2817: return $reply;
2818: }
2819: return $reply;
2820: }
2821: return $reply;
2822: }
2823: return $reply;
2824: }
2825: return 'unauthorized';
2826: }
2827:
2828: # ----------------------------------------------- Make a temp copy of the sheet
2829: # "Modified workcopy" - interactive only
2830: #
2831: sub tmpwrite {
2832: my $self = shift;
2833: my $fn=$ENV{'user.name'}.'_'.
2834: $ENV{'user.domain'}.'_spreadsheet_'.$self->{'usymb'}.'_'.
2835: $self->{'filename'};
2836: $fn=~s/\W/\_/g;
2837: $fn=$Apache::lonnet::tmpdir.$fn.'.tmp';
2838: my $fh;
2839: if ($fh=Apache::File->new('>'.$fn)) {
2840: my %f = $self->formulas();
2841: while( my ($cell,$formula) = each(%f)) {
2842: print $fh &Apache::lonnet::escape($cell)."=".&Apache::lonnet::escape($formula)."\n";
2843: }
2844: }
2845: }
2846:
2847:
2848: # ---------------------------------------------------------- Read the temp copy
2849: sub tmpread {
2850: my $self = shift;
2851: my ($nfield,$nform)=@_;
2852: my $fn=$ENV{'user.name'}.'_'.
2853: $ENV{'user.domain'}.'_spreadsheet_'.$self->{'usymb'}.'_'.
2854: $self->{'filename'};
2855: $fn=~s/\W/\_/g;
2856: $fn=$Apache::lonnet::tmpdir.$fn.'.tmp';
2857: my $fh;
2858: my %fo=();
2859: my $countrows=0;
2860: if ($fh=Apache::File->new($fn)) {
2861: while (<$fh>) {
2862: chomp;
2863: my ($cell,$formula) = split(/=/);
2864: $cell = &Apache::lonnet::unescape($cell);
2865: $formula = &Apache::lonnet::unescape($formula);
2866: $fo{$cell} = $formula;
2867: }
2868: }
2869: if ($nform eq 'changesheet') {
2870: $fo{'A'.$nfield}=(split(/__&&&\__/,$fo{'A'.$nfield}))[0];
2871: unless ($ENV{'form.sel_'.$nfield} eq 'Default') {
2872: $fo{'A'.$nfield}.='__&&&__'.$ENV{'form.sel_'.$nfield};
2873: }
2874: } else {
2875: if ($nfield) { $fo{$nfield}=$nform; }
2876: }
2877: $self->formulas(\%fo);
2878: }
2879:
2880: ##################################################################
2881: ## Row label formatting routines ##
2882: ##################################################################
2883: sub format_html_rowlabel {
2884: my $self = shift;
2885: my $rowlabel = shift;
2886: return '' if ($rowlabel eq '');
2887: my ($type,$labeldata) = split(':',$rowlabel,2);
2888: my $result = '';
2889: if ($type eq 'symb') {
2890: my ($symb,$mapid,$resid,$title,$ufn) = split(':',$labeldata);
2891: $ufn = 'default' if (!defined($ufn) || $ufn eq '');
2892: $ufn = &Apache::lonnet::unescape($ufn);
2893: $symb = &Apache::lonnet::unescape($symb);
2894: $title = &Apache::lonnet::unescape($title);
2895: $result = '<a href="/adm/assesscalc?usymb='.$symb.
2896: '&uname='.$self->{'uname'}.'&udom='.$self->{'udom'}.
2897: '&ufn='.$ufn.
2898: '&mapid='.$mapid.'&resid='.$resid.'">'.$title.'</a>';
2899: } elsif ($type eq 'student') {
2900: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
2901: if ($fullname =~ /^\s*$/) {
2902: $fullname = $sname.'@'.$sdom;
2903: }
2904: $result ='<a href="/adm/studentcalc?uname='.$sname.
2905: '&udom='.$sdom.'">';
2906: $result.=$section.' '.$id." ".$fullname.'</a>';
2907: } elsif ($type eq 'parameter') {
2908: $result = $labeldata;
2909: } else {
2910: $result = '<b><font size=+1>'.$rowlabel.'</font></b>';
2911: }
2912: return $result;
2913: }
2914:
2915: sub format_csv_rowlabel {
2916: my $self = shift;
2917: my $rowlabel = shift;
2918: return '' if ($rowlabel eq '');
2919: my ($type,$labeldata) = split(':',$rowlabel,2);
2920: my $result = '';
2921: if ($type eq 'symb') {
2922: my ($symb,$mapid,$resid,$title,$ufn) = split(':',$labeldata);
2923: $ufn = &Apache::lonnet::unescape($ufn);
2924: $symb = &Apache::lonnet::unescape($symb);
2925: $title = &Apache::lonnet::unescape($title);
2926: $result = $title;
2927: } elsif ($type eq 'student') {
2928: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
2929: $result = join('","',($sname,$sdom,$fullname,$section,$id));
2930: } elsif ($type eq 'parameter') {
2931: $labeldata =~ s/<br>/ /g;
2932: $result = $labeldata;
2933: } else {
2934: $result = $rowlabel;
2935: }
2936: return '"'.$result.'"';
2937: }
2938:
2939: sub format_excel_rowlabel {
2940: my $self = shift;
2941: my $rowlabel = shift;
2942: return '' if ($rowlabel eq '');
2943: my ($type,$labeldata) = split(':',$rowlabel,2);
2944: my $result = '';
2945: if ($type eq 'symb') {
2946: my ($symb,$mapid,$resid,$title,$ufn) = split(':',$labeldata);
2947: $ufn = &Apache::lonnet::unescape($ufn);
2948: $symb = &Apache::lonnet::unescape($symb);
2949: $title = &Apache::lonnet::unescape($title);
2950: $result = $title;
2951: } elsif ($type eq 'student') {
2952: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
2953: $section = '' if (! defined($section));
2954: $id = '' if (! defined($id));
2955: my @Data = ($sname,$sdom,$fullname,$section,$id);
2956: $result = \@Data;
2957: } elsif ($type eq 'parameter') {
2958: $labeldata =~ s/<br>/ /g;
2959: $result = $labeldata;
2960: } else {
2961: $result = $rowlabel;
2962: }
2963: return $result;
2964: }
2965:
2966: # ---------------------------------------------- Update rows for course listing
2967: sub updateclasssheet {
2968: my $self = shift;
2969: my $cnum =$self->{'cnum'};
2970: my $cdom =$self->{'cdom'};
2971: my $cid =$self->{'cid'};
2972: my $chome =$self->{'chome'};
2973: #
2974: %Section = ();
2975: #
2976: # Read class list and row labels
2977: my $classlist = &Apache::loncoursedata::get_classlist();
2978: if (! defined($classlist)) {
2979: return 'Could not access course classlist';
2980: }
2981: #
2982: my %currentlist=();
2983: foreach my $student (keys(%$classlist)) {
2984: my ($studentDomain,$studentName,$end,$start,$id,$studentSection,
2985: $fullname,$status) = @{$classlist->{$student}};
2986: $Section{$studentName.':'.$studentDomain} = $studentSection;
2987: if ($ENV{'form.Status'} eq $status || $ENV{'form.Status'} eq 'Any') {
2988: $currentlist{$student}=join(':',('student',$studentName,
2989: $studentDomain,$fullname,
2990: $studentSection,$id));
2991: }
2992: }
2993: #
2994: # Find discrepancies between the course row table and this
2995: #
2996: my %f=$self->formulas();
2997: my $changed=0;
2998: #
2999: $self->{'maxrow'}=0;
3000: my %existing=();
3001: #
3002: # Now obsolete rows
3003: foreach my $rownum ($self->rows()) {
3004: my $cell = 'A'.$rownum;
3005: if ($rownum > $self->{'maxrow'}) {
3006: $self->{'maxrow'}= $rownum;
3007: }
3008: $existing{$f{$cell}}=1;
3009: if (! defined($currentlist{$f{$cell}}) && ($f{$cell}=~/^(~~~|---)/)) {
3010: $f{$cell}='!!! Obsolete';
3011: $changed=1;
3012: }
3013: }
3014: #
3015: # New and unknown keys
3016: foreach my $student (sort keys(%currentlist)) {
3017: next if ($existing{$student});
3018: $changed=1;
3019: $self->{'maxrow'}++;
3020: $f{'A'.$self->{'maxrow'}}=$student;
3021: }
3022: $self->formulas(\%f) if ($changed);
3023: #
3024: $self->rowlabels(\%currentlist);
3025: }
3026:
3027: # ----------------------------------- Update rows for student and assess sheets
3028: sub get_student_rowlabels {
3029: my $self = shift;
3030: #
3031: my %course_db;
3032: #
3033: my $stype = $self->{'type'};
3034: my $uname = $self->{'uname'};
3035: my $udom = $self->{'udom'};
3036: #
3037: $self->{'rowlabel'} = {};
3038: #
3039: my $identifier =$self->{'coursefilename'}.'_'.$stype;
3040: if (exists($rowlabel_cache{$identifier})) {
3041: my %tmp = split(/___;___/,$rowlabel_cache{$identifier});
3042: $self->rowlabels(\%tmp);
3043: } else {
3044: # Get the data and store it in the cache
3045: # Tie hash
3046: tie(%course_db,'GDBM_File',$self->{'coursefilename'}.'.db',
3047: &GDBM_READER(),0640);
3048: if (! tied(%course_db)) {
3049: return 'Could not access course data';
3050: }
3051: #
3052: my %assesslist = ();
3053: foreach ('Feedback','Evaluation','Tutoring','Discussion') {
3054: my $symb = '_'.lc($_);
3055: $assesslist{$symb} = join(':',('symb',$symb,0,0,
3056: &Apache::lonnet::escape($_)));
3057: }
3058: #
3059: while (my ($key,$srcf) = each(%course_db)) {
3060: next if ($key !~ /^src_(\d+)\.(\d+)$/);
3061: my $mapid = $1;
3062: my $resid = $2;
3063: my $id = $mapid.'.'.$resid;
3064: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
3065: my $symb=
3066: &Apache::lonnet::declutter($course_db{'map_id_'.$mapid}).
3067: '___'.$resid.'___'.&Apache::lonnet::declutter($srcf);
3068: $assesslist{$symb} ='symb:'.&Apache::lonnet::escape($symb).':'
3069: .$mapid.':'.$resid.':'.
3070: &Apache::lonnet::escape($course_db{'title_'.$id});
3071: }
3072: }
3073: untie(%course_db);
3074: # Store away the data
3075: $self->{'rowlabel'} = \%assesslist;
3076: $rowlabel_cache{$identifier}=join('___;___',%{$self->{'rowlabel'}});
3077: }
3078:
3079: }
3080:
3081: sub get_assess_rowlabels {
3082: my $self = shift;
3083: #
3084: my %course_db;
3085: #
3086: my $stype = $self->{'type'};
3087: my $uname = $self->{'uname'};
3088: my $udom = $self->{'udom'};
3089: my $usymb = $self->{'usymb'};
3090: #
3091: $self->rowlabels({});
3092: my $identifier =$self->{'coursefilename'}.'_'.$stype.'_'.$usymb;
3093: #
3094: if (exists($rowlabel_cache{$identifier})) {
3095: my %tmp = split('___;___',$rowlabel_cache{$identifier});
3096: $self->rowlabels(\%tmp);
3097: } else {
3098: # Get the data and store it in the cache
3099: # Tie hash
3100: tie(%course_db,'GDBM_File',$self->{'coursefilename'}.'.db',
3101: &GDBM_READER(),0640);
3102: if (! tied(%course_db)) {
3103: return 'Could not access course data';
3104: }
3105: #
3106: my %parameter_labels=
3107: ('timestamp' =>
3108: 'parameter:Timestamp of Last Transaction<br>timestamp',
3109: 'subnumber' =>
3110: 'parameter:Number of Submissions<br>subnumber',
3111: 'tutornumber' =>
3112: 'parameter:Number of Tutor Responses<br>tutornumber',
3113: 'totalpoints' =>
3114: 'parameter:Total Points Granted<br>totalpoints');
3115: while (my ($key,$srcf) = each(%course_db)) {
3116: next if ($key !~ /^src_(\d+)\.(\d+)$/);
3117: my $mapid = $1;
3118: my $resid = $2;
3119: my $id = $mapid.'.'.$resid;
3120: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
3121: # Loop through the metadata for this key
3122: my @Metadata = split(/,/,
3123: &Apache::lonnet::metadata($srcf,'keys'));
3124: foreach my $key (@Metadata) {
3125: next if ($key !~ /^(stores|parameter)_/);
3126: my $display=
3127: &Apache::lonnet::metadata($srcf,$key.'.display');
3128: unless ($display) {
3129: $display.=
3130: &Apache::lonnet::metadata($srcf,$key.'.name');
3131: }
3132: $display.='<br>'.$key;
3133: $parameter_labels{$key}='parameter:'.$display;
3134: } # end of foreach
3135: }
3136: }
3137: untie(%course_db);
3138: # Store away the results
3139: $self->rowlabels(\%parameter_labels);
3140: $rowlabel_cache{$identifier}=join('___;___',%parameter_labels);
3141: }
3142: }
3143:
3144: sub updatestudentassesssheet {
3145: my $self = shift;
3146: if ($self->{'type'} eq 'studentcalc') {
3147: $self->get_student_rowlabels();
3148: } else {
3149: $self->get_assess_rowlabels();
3150: }
3151: # Determine if any of the information has changed
3152: my %f=$self->formulas();
3153: my $changed=0;
3154: $self->{'maxrow'} = 0;
3155: my %existing=();
3156: # Now obsolete rows
3157: foreach my $rownum ($self->rows()) {
3158: my $cell = 'A'.$rownum;
3159: my $formula = $f{$cell};
3160: $self->{'maxrow'} = $rownum if ($rownum > $self->{'maxrow'});
3161: my ($usy,$ufn)=split(/__&&&\__/,$formula);
3162: $existing{$usy}=1;
3163: if ( ! exists($self->{'rowlabel'}->{$usy}) ||
3164: ! defined($self->{'rowlabel'}->{$usy}) ||
3165: ($formula =~ /^(~~~|---)/) ||
3166: ($formula =~ /^\s*$/)) {
3167: $f{$cell}='!!! Obsolete';
3168: $changed=1;
3169: }
3170: }
3171: # New and unknown keys
3172: my %keys_hates_me = $self->rowlabels();
3173: foreach (keys(%keys_hates_me)) {
3174: unless ($existing{$_}) {
3175: $changed=1;
3176: $self->{'maxrow'}++;
3177: $f{'A'.$self->{'maxrow'}}=$_;
3178: }
3179: }
3180: $self->formulas(\%f) if ($changed);
3181: # $self->dump_formulas_to_log();
3182: }
3183:
3184: # ------------------------------------------------ Load data for one assessment
3185: sub loadstudent{
3186: my $self = shift;
3187: my ($r,$c)=@_;
3188: my %constants = ();
3189: my %formulas = $self->formulas();
3190: $cachedassess = $self->{'uname'}.':'.$self->{'udom'};
3191: # Get ALL the student preformance data
3192: my @tmp = &Apache::loncoursedata::get_current_state($self->{'uname'},
3193: $self->{'udom'},
3194: undef,
3195: $self->{'cid'});
3196: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
3197: %cachedstores = @tmp;
3198: }
3199: undef @tmp;
3200: # debugging code
3201: # $self->dump_hash_to_log(\%cachedstores);
3202: #
3203: my @assessdata=();
3204: foreach my $row ($self->rows()) {
3205: my $cell = 'A'.$row;
3206: my $value = $formulas{$cell};
3207: if(defined($c) && ($c->aborted())) {
3208: last;
3209: }
3210: next if ($value =~ /^[!~-]/);
3211: my ($usy,$ufn)=split(/__&&&\__/,$value);
3212: @assessdata=$self->exportsheet($self->{'uname'},
3213: $self->{'udom'},
3214: 'assesscalc',$usy,$ufn,$r);
3215: my $index=0;
3216: foreach my $col ('A','B','C','D','E','F','G','H','I','J','K','L','M',
3217: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
3218: if (defined($assessdata[$index])) {
3219: if ($assessdata[$index]=~/\D/) {
3220: $constants{$col.$row}="'".$assessdata[$index]."'";
3221: } else {
3222: $constants{$col.$row}=$assessdata[$index];
3223: }
3224: $formulas{$col.$row}='import' if ($col ne 'A');
3225: }
3226: $index++;
3227: }
3228: }
3229: $cachedassess='';
3230: undef %cachedstores;
3231: $self->formulas(\%formulas);
3232: $self->constants(\%constants);
3233: }
3234:
3235: # --------------------------------------------------- Load Course Sheet
3236: #
3237: sub loadcourse {
3238: my $self = shift;
3239: my ($r,$c)=@_;
3240: #
3241: my %constants=();
3242: my %formulas=$self->formulas();
3243: #
3244: my $total=0;
3245: foreach ($self->rows()) {
3246: $total++ if ($formulas{'A'.$_} !~ /^[!~-]/);
3247: }
3248:
3249: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,
3250: 'Spreadsheet Status','Spreadsheet Calculation Progress', $total);
3251: &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
3252: 'Processing Course Assessment Data');
3253:
3254: # It would be nice to load in the classlist and assessment info at this
3255: # point, before attacking the student spreadsheets.
3256: foreach my $row ($self->rows()) {
3257: if(defined($c) && ($c->aborted())) {
3258: last;
3259: }
3260: my $cell = 'A'.$row;
3261: next if ($formulas{$cell}=~/^[\!\~\-]/);
3262: my ($sname,$sdom) = split(':',$formulas{$cell});
3263: my $started = time;
3264: my @studentdata=$self->exportsheet($sname,$sdom,'studentcalc',
3265: undef,undef,$r);
3266: undef %userrdatas;
3267: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
3268: 'last student');
3269: my $index=0;
3270: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
3271: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
3272: if (defined($studentdata[$index])) {
3273: my $col=$_;
3274: if ($studentdata[$index]=~/\D/) {
3275: $constants{$col.$row}="'".$studentdata[$index]."'";
3276: } else {
3277: $constants{$col.$row}=$studentdata[$index];
3278: }
3279: unless ($col eq 'A') {
3280: $formulas{$col.$row}='import';
3281: }
3282: }
3283: $index++;
3284: }
3285: }
3286: $self->formulas(\%formulas);
3287: $self->constants(\%constants);
3288: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
3289: }
3290:
3291: # ------------------------------------------------ Load data for one assessment
3292: #
3293: sub loadassessment {
3294: my $self = shift;
3295: my ($r,$c)=@_;
3296:
3297: my $uhome = $self->{'uhome'};
3298: my $uname = $self->{'uname'};
3299: my $udom = $self->{'udom'};
3300: my $symb = $self->{'usymb'};
3301: my $cid = $self->{'cid'};
3302: my $cnum = $self->{'cnum'};
3303: my $cdom = $self->{'cdom'};
3304: my $chome = $self->{'chome'};
3305: my $csec = $self->{'csec'};
3306:
3307: my $namespace;
3308: unless ($namespace=$cid) { return ''; }
3309: # Get stored values
3310: my %returnhash=();
3311: if ($cachedassess eq $uname.':'.$udom) {
3312: #
3313: # get data out of the dumped stores
3314: #
3315: if (exists($cachedstores{$symb})) {
3316: %returnhash = %{$cachedstores{$symb}};
3317: } else {
3318: %returnhash = ();
3319: }
3320: } else {
3321: #
3322: # restore individual
3323: #
3324: %returnhash = &Apache::lonnet::restore($symb,$namespace,$udom,$uname);
3325: }
3326: #
3327: # returnhash now has all stores for this resource
3328: # convert all "_" to "." to be able to use libraries, multiparts, etc
3329: #
3330: # This is dumb. It is also necessary :(
3331: my @oldkeys=keys %returnhash;
3332: #
3333: foreach my $name (@oldkeys) {
3334: my $value=$returnhash{$name};
3335: delete $returnhash{$name};
3336: $name=~s/\_/\./g;
3337: $returnhash{$name}=$value;
3338: }
3339: # initialize coursedata and userdata for this user
3340: undef %courseopt;
3341: undef %useropt;
3342:
3343: my $userprefix=$uname.'_'.$udom.'_';
3344:
3345: unless ($uhome eq 'no_host') {
3346: # Get coursedata
3347: unless ((time-$courserdatas{$cid.'.last_cache'})<240) {
3348: my %Tmp = &Apache::lonnet::dump('resourcedata',$cdom,$cnum);
3349: $courserdatas{$cid}=\%Tmp;
3350: $courserdatas{$cid.'.last_cache'}=time;
3351: }
3352: while (my ($name,$value) = each(%{$courserdatas{$cid}})) {
3353: $courseopt{$userprefix.$name}=$value;
3354: }
3355: # Get userdata (if present)
3356: unless ((time-$userrdatas{$uname.'@'.$udom.'.last_cache'})<240) {
3357: my %Tmp = &Apache::lonnet::dump('resourcedata',$udom,$uname);
3358: $userrdatas{$cid} = \%Tmp;
3359: # Most of the time the user does not have a 'resourcedata.db'
3360: # file. We need to cache that we got nothing instead of bothering
3361: # with requesting it every time.
3362: $userrdatas{$uname.'@'.$udom.'.last_cache'}=time;
3363: }
3364: while (my ($name,$value) = each(%{$userrdatas{$cid}})) {
3365: $useropt{$userprefix.$name}=$value;
3366: }
3367: }
3368: # now courseopt, useropt initialized for this user and course
3369: # (used by parmval)
3370: #
3371: # Load keys for this assessment only
3372: #
3373: my %thisassess=();
3374: my ($symap,$syid,$srcf)=split(/\_\_\_/,$symb);
3375: foreach (split(/\,/,&Apache::lonnet::metadata($srcf,'keys'))) {
3376: $thisassess{$_}=1;
3377: }
3378: #
3379: # Load parameters
3380: #
3381: my %c=();
3382: if (tie(%parmhash,'GDBM_File',
3383: $self->{'coursefilename'}.'_parms.db',&GDBM_READER(),0640)) {
3384: my %f=$self->formulas();
3385: foreach my $row ($self->rows()) {
3386: my $cell = 'A'.$row;
3387: my $formula = $self->formula($cell);
3388: next if ($formula =~/^[\!\~\-]/);
3389: if ($formula =~ /^parameter/) {
3390: if (defined($thisassess{$formula})) {
3391: my $val = &parmval($formula,$symb,$uname,$udom,$csec);
3392: $c{$cell} = $val;
3393: $c{$formula} = $val;
3394: }
3395: } else {
3396: my $ckey=$formula;
3397: $formula=~s/^stores\_/resource\./;
3398: $formula=~s/\_/\./g;
3399: $c{$cell}=$returnhash{$formula};
3400: $c{$ckey}=$returnhash{$formula};
3401: }
3402: }
3403: untie(%parmhash);
3404: }
3405: $self->constants(\%c);
3406: }
3407:
3408:
3409: # =============================================== Update information in a sheet
3410: #
3411: # Add new users or assessments, etc.
3412: #
3413: sub updatesheet {
3414: my $self = shift;
3415: if ($self->{'type'} eq 'classcalc') {
3416: return $self->updateclasssheet();
3417: } else {
3418: return $self->updatestudentassesssheet();
3419: }
3420: }
3421:
3422: # =================================================== Load the rows for a sheet
3423: #
3424: # Import the data for rows
3425: #
3426: sub loadrows {
3427: my $self = shift;
3428: my ($r)=@_;
3429: my $c = $r->connection;
3430: if ($self->{'type'} eq 'classcalc') {
3431: $self->loadcourse($r,$c);
3432: } elsif ($self->{'type'} eq 'studentcalc') {
3433: $self->loadstudent($r,$c);
3434: } else {
3435: $self->loadassessment($r,$c);
3436: }
3437: }
3438:
3439: # ============================================================== Export handler
3440: # exportsheet
3441: # returns the export row for a spreadsheet.
3442: #
3443: sub exportsheet {
3444: my $self = shift;
3445: my ($uname,$udom,$stype,$usymb,$fn,$r)=@_;
3446: my $flag = 0;
3447: $uname = $uname || $self->{'uname'};
3448: $udom = $udom || $self->{'udom'};
3449: $stype = $stype || $self->{'type'};
3450: my @exportarr=();
3451: # This handles the assessment sheets for '_feedback', etc
3452: if (defined($usymb) && ($usymb=~/^\_(\w+)/) &&
3453: (!defined($fn) || $fn eq '')) {
3454: $fn='default_'.$1;
3455: }
3456: #
3457: # Check if cached
3458: #
3459: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3460: my $found='';
3461: if ($Apache::lonspreadsheet::oldsheets{$key}) {
3462: foreach (split(/___&\___/,$Apache::lonspreadsheet::oldsheets{$key})) {
3463: my ($name,$value)=split(/___=___/,$_);
3464: if ($name eq $fn) {
3465: $found=$value;
3466: }
3467: }
3468: }
3469: unless ($found) {
3470: &cachedssheets($self,$uname,$udom);
3471: if ($Apache::lonspreadsheet::oldsheets{$key}) {
3472: foreach (split(/___&\___/,$Apache::lonspreadsheet::oldsheets{$key})) {
3473: my ($name,$value)=split(/___=___/,$_);
3474: if ($name eq $fn) {
3475: $found=$value;
3476: }
3477: }
3478: }
3479: }
3480: #
3481: # Check if still valid
3482: #
3483: if ($found) {
3484: if (&forcedrecalc($uname,$udom,$stype,$usymb)) {
3485: $found='';
3486: }
3487: }
3488: if ($found) {
3489: #
3490: # Return what was cached
3491: #
3492: @exportarr=split(/___;___/,$found);
3493: return @exportarr;
3494: }
3495: #
3496: # Not cached
3497: #
3498: my $newsheet = Apache::lonspreadsheet::Spreadsheet->new($uname,$udom,
3499: $stype,$usymb);
3500: $newsheet->readsheet($fn);
3501: $newsheet->updatesheet();
3502: $newsheet->loadrows($r);
3503: $newsheet->calcsheet();
3504: @exportarr=$newsheet->exportdata();
3505: ##
3506: ## Store now
3507: ##
3508: #
3509: # load in the old value
3510: #
3511: my %currentlystored=();
3512: if ($stype eq 'studentcalc') {
3513: my @tmp = &Apache::lonnet::get('nohist_calculatedsheets',
3514: [$key],
3515: $self->{'cdom'},$self->{'cnum'});
3516: if ($tmp[0]!~/^error/) {
3517: # We only got one key, so we will access it directly.
3518: foreach (split('___&___',$tmp[1])) {
3519: my ($key,$value) = split('___=___',$_);
3520: $key = '' if (! defined($key));
3521: $currentlystored{$key} = $value;
3522: }
3523: }
3524: } else {
3525: my @tmp = &Apache::lonnet::get('nohist_calculatedsheets_'.
3526: $self->{'cid'},[$key],
3527: $self->{'udom'},$self->{'uname'});
3528: if ($tmp[0]!~/^error/) {
3529: # We only got one key, so we will access it directly.
3530: foreach (split('___&___',$tmp[1])) {
3531: my ($key,$value) = split('___=___',$_);
3532: $key = '' if (! defined($key));
3533: $currentlystored{$key} = $value;
3534: }
3535: }
3536: }
3537: #
3538: # Add the new line
3539: #
3540: $currentlystored{$fn}=join('___;___',@exportarr);
3541: #
3542: # Stick everything back together
3543: #
3544: my $newstore='';
3545: foreach (keys(%currentlystored)) {
3546: if ($newstore) { $newstore.='___&___'; }
3547: $newstore.=$_.'___=___'.$currentlystored{$_};
3548: }
3549: my $now=time;
3550: #
3551: # Store away the new value
3552: #
3553: my $timekey = $key.'.time';
3554: if ($stype eq 'studentcalc') {
3555: my $result = &Apache::lonnet::put('nohist_calculatedsheets',
3556: { $key => $newstore,
3557: $timekey => $now },
3558: $self->{'cdom'},
3559: $self->{'cnum'});
3560: } else {
3561: my $result = &Apache::lonnet::put('nohist_calculatedsheets_'.$self->{'cid'},
3562: { $key => $newstore,
3563: $timekey => $now },
3564: $self->{'udom'},
3565: $self->{'uname'});
3566: }
3567: return @exportarr;
3568: }
3569:
3570: 1;
3571:
3572: __END__
3573:
3574:
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