1: #
2: # $Id: lonspreadsheet.pm,v 1.177 2003/03/11 15:00:47 albertel 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 HTML::Entities();
61:
62: # --------------------------------------------------------- Various form fields
63:
64: sub textfield {
65: my ($title,$name,$value)=@_;
66: return "\n<p><b>$title:</b><br>".
67: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
68: }
69:
70: sub hiddenfield {
71: my ($name,$value)=@_;
72: return "\n".'<input type=hidden name="'.$name.'" value="'.$value.'">';
73: }
74:
75: sub selectbox {
76: my ($title,$name,$value,%options)=@_;
77: my $selout="\n<p><b>$title:</b><br>".'<select name="'.$name.'">';
78: foreach (sort keys(%options)) {
79: $selout.='<option value="'.$_.'"';
80: if ($_ eq $value) { $selout.=' selected'; }
81: $selout.='>'.$options{$_}.'</option>';
82: }
83: return $selout.'</select>';
84: }
85:
86: my %oldsheets;
87: my %loadedcaches;
88:
89: # ================================================================ Main handler
90: #
91: # Interactive call to screen
92: #
93: #
94: sub handler {
95: my $r=shift;
96:
97: my ($sheettype) = ($r->uri=~/\/(\w+)$/);
98:
99: if (! exists($ENV{'form.Status'})) {
100: $ENV{'form.Status'} = 'Active';
101: }
102: if ( ! exists($ENV{'form.output'}) ||
103: ($sheettype ne 'classcalc' &&
104: lc($ENV{'form.output'}) eq 'recursive excel')) {
105: $ENV{'form.output'} = 'HTML';
106: }
107: #
108: # Overload checking
109: #
110: # Check this server
111: my $loaderror=&Apache::lonnet::overloaderror($r);
112: if ($loaderror) { return $loaderror; }
113: # Check the course homeserver
114: $loaderror= &Apache::lonnet::overloaderror($r,
115: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
116: if ($loaderror) { return $loaderror; }
117: #
118: # HTML Header
119: #
120: if ($r->header_only) {
121: $r->content_type('text/html');
122: $r->send_http_header;
123: return OK;
124: }
125: #
126: # Roles Checking
127: #
128: # Needs to be in a course
129: if (! $ENV{'request.course.fn'}) {
130: # Not in a course, or not allowed to modify parms
131: $ENV{'user.error.msg'}=
132: $r->uri.":opa:0:0:Cannot modify spreadsheet";
133: return HTTP_NOT_ACCEPTABLE;
134: }
135: #
136: # Get query string for limited number of parameters
137: #
138: &Apache::loncommon::get_unprocessed_cgi
139: ($ENV{'QUERY_STRING'},['uname','udom','usymb','ufn','mapid','resid']);
140: #
141: # Deal with restricted student permissions
142: #
143: if ($ENV{'request.role'} =~ /^st\./) {
144: delete $ENV{'form.unewfield'} if (exists($ENV{'form.unewfield'}));
145: delete $ENV{'form.unewformula'} if (exists($ENV{'form.unewformula'}));
146: }
147: #
148: # Look for special assessment spreadsheets - '_feedback', etc.
149: #
150: if (($ENV{'form.usymb'}=~/^\_(\w+)/) && (!$ENV{'form.ufn'} ||
151: $ENV{'form.ufn'} eq '' ||
152: $ENV{'form.ufn'} eq 'default')) {
153: $ENV{'form.ufn'}='default_'.$1;
154: }
155: if (!$ENV{'form.ufn'} || $ENV{'form.ufn'} eq 'default') {
156: $ENV{'form.ufn'}='course_default_'.$sheettype;
157: }
158: #
159: # Interactive loading of specific sheet?
160: #
161: if (($ENV{'form.load'}) && ($ENV{'form.loadthissheet'} ne 'Default')) {
162: $ENV{'form.ufn'}=$ENV{'form.loadthissheet'};
163: }
164: #
165: # Determine the user name and domain for the sheet.
166: my $aname;
167: my $adom;
168: unless ($ENV{'form.uname'}) {
169: $aname=$ENV{'user.name'};
170: $adom=$ENV{'user.domain'};
171: } else {
172: $aname=$ENV{'form.uname'};
173: $adom=$ENV{'form.udom'};
174: }
175: #
176: # Open page, try to prevent browser cache.
177: #
178: $r->content_type('text/html');
179: $r->header_out('Cache-control','no-cache');
180: $r->header_out('Pragma','no-cache');
181: $r->send_http_header;
182: #
183: # Header....
184: #
185: $r->print('<html><head><title>LON-CAPA Spreadsheet</title>');
186: my $nothing = &Apache::lonhtmlcommon::javascript_nothing();
187:
188: if ($ENV{'request.role'} !~ /^st\./) {
189: $r->print(<<ENDSCRIPT);
190: <script language="JavaScript">
191:
192: var editwin;
193:
194: function celledit(cellname,cellformula) {
195: var edit_text = '';
196: // cellformula may contain less-than and greater-than symbols, so
197: // we need to escape them?
198: edit_text +='<html><head><title>Cell Edit Window</title></head><body>';
199: edit_text += '<form name="editwinform">';
200: edit_text += '<center><h3>Cell '+cellname+'</h3>';
201: edit_text += '<textarea name="newformula" cols="40" rows="6"';
202: edit_text += ' wrap="off" >'+cellformula+'</textarea>';
203: edit_text += '</br>';
204: edit_text += '<input type="button" name="accept" value="Accept"';
205: edit_text += ' onClick=\\\'javascript:';
206: edit_text += 'opener.document.sheet.unewfield.value=';
207: edit_text += '"'+cellname+'";';
208: edit_text += 'opener.document.sheet.unewformula.value=';
209: edit_text += 'document.editwinform.newformula.value;';
210: edit_text += 'opener.document.sheet.submit();';
211: edit_text += 'self.close()\\\' />';
212: edit_text += ' ';
213: edit_text += '<input type="button" name="abort" ';
214: edit_text += 'value="Discard Changes"';
215: edit_text += ' onClick="javascript:self.close()" />';
216: edit_text += '</center></body></html>';
217:
218: if (editwin != null && !(editwin.closed) ) {
219: editwin.close();
220: }
221:
222: editwin = window.open($nothing,'CellEditWin','height=200,width=350,scrollbars=no,resizeable=yes,alwaysRaised=yes,dependent=yes',true);
223: editwin.document.write(edit_text);
224: }
225:
226: function changesheet(cn) {
227: document.sheet.unewfield.value=cn;
228: document.sheet.unewformula.value='changesheet';
229: document.sheet.submit();
230: }
231:
232: function insertrow(cn) {
233: document.sheet.unewfield.value='insertrow';
234: document.sheet.unewformula.value=cn;
235: document.sheet.submit();
236: }
237:
238: </script>
239: ENDSCRIPT
240: }
241: $r->print('</head>'.&Apache::loncommon::bodytag('Grades Spreadsheet').
242: '<form action="'.$r->uri.'" name="sheet" method="post">');
243: $r->print(&hiddenfield('uname',$ENV{'form.uname'}).
244: &hiddenfield('udom',$ENV{'form.udom'}).
245: &hiddenfield('usymb',$ENV{'form.usymb'}).
246: &hiddenfield('unewfield','').
247: &hiddenfield('unewformula',''));
248: $r->rflush();
249: #
250: # Full recalc?
251: #
252: # Read new sheet or modified worksheet
253: my $sheet=Apache::lonspreadsheet::Spreadsheet->new($aname,$adom,$sheettype,$ENV{'form.usymb'});
254: if ($ENV{'form.forcerecalc'}) {
255: $r->print('<h4>Completely Recalculating Sheet ...</h4>');
256: $sheet->complete_recalc();
257: }
258: #
259: # Global directory configs
260: #
261: $sheet->includedir($r->dir_config('lonIncludes'));
262: #
263: # Check user permissions
264: if (($sheet->{'type'} eq 'classcalc' ) ||
265: ($sheet->{'uname'} ne $ENV{'user.name'} ) ||
266: ($sheet->{'udom'} ne $ENV{'user.domain'})) {
267: unless (&Apache::lonnet::allowed('vgr',$sheet->{'cid'})) {
268: $r->print('<h1>Access Permission Denied</h1>'.
269: '</form></body></html>');
270: return OK;
271: }
272: }
273: # Print out user information
274: $r->print('<h2>'.$sheet->{'coursedesc'}.'</h2>');
275: if ($sheet->{'type'} ne 'classcalc') {
276: $r->print('<h2>'.$sheet->gettitle().'</h2><p>');
277: }
278: if ($sheet->{'type'} eq 'assesscalc') {
279: $r->print('<b>User:</b> '.$sheet->{'uname'}.
280: '<br /><b>Domain:</b> '.$sheet->{'udom'}.'<br />');
281: }
282: if ($sheet->{'type'} eq 'studentcalc' ||
283: $sheet->{'type'} eq 'assesscalc') {
284: $r->print('<b>Section/Group:</b>'.$sheet->{'csec'}.'</p>');
285: }
286: #
287: # If a new formula had been entered, go from work copy
288: if ($ENV{'form.unewfield'}) {
289: $r->print('<h2>Modified Workcopy</h2>');
290: #$ENV{'form.unewformula'}=~s/\'/\"/g;
291: $r->print('<p>Cell '.$ENV{'form.unewfield'}.' = <pre>');
292: $r->print(&HTML::Entities::encode($ENV{'form.unewformula'}).
293: '</pre></p>');
294: $sheet->{'filename'} = $ENV{'form.ufn'};
295: $sheet->tmpread($ENV{'form.unewfield'},$ENV{'form.unewformula'});
296: } elsif ($ENV{'form.saveas'}) {
297: $sheet->{'filename'} = $ENV{'form.ufn'};
298: $sheet->tmpread();
299: } else {
300: $sheet->readsheet($ENV{'form.ufn'});
301: }
302: # Additional options
303: if ($sheet->{'type'} eq 'assesscalc') {
304: $r->print('<p><font size=+2>'.
305: '<a href="/adm/studentcalc?'.
306: 'uname='.$sheet->{'uname'}.
307: '&udom='.$sheet->{'udom'}.'">'.
308: 'Level up: Student Sheet</a></font></p>');
309: }
310: if (($sheet->{'type'} eq 'studentcalc') &&
311: (&Apache::lonnet::allowed('vgr',$sheet->{'cid'}))) {
312: $r->print ('<p><font size=+2><a href="/adm/classcalc">'.
313: 'Level up: Course Sheet</a></font></p>');
314: }
315: # Recalc button
316: $r->print('<br />'.
317: '<input type="submit" name="forcerecalc" '.
318: 'value="Completely Recalculate Sheet"></p>');
319: # Save dialog
320: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
321: my $fname=$ENV{'form.ufn'};
322: $fname=~s/\_[^\_]+$//;
323: if ($fname eq 'default') { $fname='course_default'; }
324: $r->print('<input type=submit name=saveas value="Save as ...">'.
325: '<input type=text size=20 name=newfn value="'.$fname.'">'.
326: 'make default: <input type=checkbox name="makedefufn"><p>');
327: }
328: $r->print(&hiddenfield('ufn',$sheet->{'filename'}));
329: # Load dialog
330: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
331: $r->print('<p><input type=submit name=load value="Load ...">'.
332: '<select name="loadthissheet">'.
333: '<option name="default">Default</option>');
334: foreach ($sheet->othersheets()) {
335: $r->print('<option name="'.$_.'"');
336: if ($ENV{'form.ufn'} eq $_) {
337: $r->print(' selected');
338: }
339: $r->print('>'.$_.'</option>');
340: }
341: $r->print('</select><p>');
342: if ($sheet->{'type'} eq 'studentcalc') {
343: $sheet->setothersheets($sheet->othersheets('assesscalc'));
344: }
345: }
346: #
347: # Set up caching mechanisms
348: #
349: &Apache::lonspreadsheet::Spreadsheet::load_spreadsheet_expirationdates();
350: # Clear out old caches if we have not seen this class before.
351: if (exists($oldsheets{'course'}) &&
352: $oldsheets{'course'} ne $sheet->{'cid'}) {
353: undef %oldsheets;
354: undef %loadedcaches;
355: }
356: $oldsheets{'course'} = $sheet->{'cid'};
357: #
358: if ($sheet->{'type'} eq 'classcalc') {
359: $r->print("Loading previously calculated student sheets ...\n");
360: $r->rflush();
361: &Apache::lonspreadsheet::Spreadsheet::cachedcsheets();
362: } elsif ($sheet->{'type'} eq 'studentcalc') {
363: $r->print("Loading previously calculated assessment sheets ...\n");
364: $r->rflush();
365: $sheet->cachedssheets();
366: }
367: # Update sheet, load rows
368: $r->print("Loaded sheet(s), updating rows ...<br>\n");
369: $r->rflush();
370: #
371: $sheet->updatesheet();
372: $r->print("Updated rows, loading row data ...\n");
373: $r->rflush();
374: #
375: $sheet->loadrows($r);
376: $r->print("Loaded row data, calculating sheet ...<br>\n");
377: $r->rflush();
378: #
379: my $calcoutput=$sheet->calcsheet();
380: $r->print('<h3><font color=red>'.$calcoutput.'</h3></font>');
381: # See if something to save
382: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
383: my $fname='';
384: if ($ENV{'form.saveas'} && ($fname=$ENV{'form.newfn'})) {
385: $fname=~s/\W/\_/g;
386: if ($fname eq 'default') { $fname='course_default'; }
387: $fname.='_'.$sheet->{'type'};
388: $sheet->{'filename'} = $fname;
389: $ENV{'form.ufn'}=$fname;
390: $r->print('<p>Saving spreadsheet: '.
391: $sheet->writesheet($ENV{'form.makedefufn'}).
392: '<p>');
393: }
394: }
395: #
396: # Write the modified worksheet
397: $r->print('<b>Current sheet:</b> '.$sheet->{'filename'}.'</p>');
398: $sheet->tmpwrite();
399: if ($sheet->{'type'} eq 'assesscalc') {
400: $r->print('<p>Show rows with empty A column: ');
401: } else {
402: $r->print('<p>Show empty rows: ');
403: }
404: #
405: $r->print(&hiddenfield('userselhidden','true').
406: '<input type="checkbox" name="showall" onClick="submit()"');
407: #
408: if ($ENV{'form.showall'}) {
409: $r->print(' checked');
410: } else {
411: unless ($ENV{'form.userselhidden'}) {
412: unless
413: ($ENV{'course.'.$sheet->{'cid'}.'.hideemptyrows'} eq 'yes') {
414: $r->print(' checked');
415: $ENV{'form.showall'}=1;
416: }
417: }
418: }
419: $r->print('>');
420: #
421: # output format select box
422: $r->print(' Output as <select name="output" size="1" onChange="submit()">'.
423: "\n");
424: foreach my $mode (qw/HTML CSV Excel/) {
425: $r->print('<option value="'.$mode.'"');
426: if ($ENV{'form.output'} eq $mode) {
427: $r->print(' selected ');
428: }
429: $r->print('>'.$mode.'</option>'."\n");
430: }
431: #
432: # Mulit-sheet excel takes too long and does not work at all for large
433: # classes. Future inclusion of this option may be possible with the
434: # Spreadsheet::WriteExcel::Big and speed improvements.
435: #
436: # if ($sheet->{'type'} eq 'classcalc') {
437: # $r->print('<option value="recursive excel"');
438: # if ($ENV{'form.output'} eq 'recursive excel') {
439: # $r->print(' selected ');
440: # }
441: # $r->print(">Multi-Sheet Excel</option>\n");
442: # }
443: $r->print("</select>\n");
444: #
445: if ($sheet->{'type'} eq 'classcalc') {
446: $r->print(' Student Status: '.
447: &Apache::lonhtmlcommon::StatusOptions
448: ($ENV{'form.Status'},'sheet'));
449: }
450: #
451: # Buttons to insert rows
452: # $r->print(<<ENDINSERTBUTTONS);
453: #<br>
454: #<input type='button' onClick='insertrow("top");'
455: #value='Insert Row Top'>
456: #<input type='button' onClick='insertrow("bottom");'
457: #value='Insert Row Bottom'><br>
458: #ENDINSERTBUTTONS
459: # Print out sheet
460: $sheet->outsheet($r);
461: $r->print('</form></body></html>');
462: # Done
463: return OK;
464: }
465:
466: 1;
467:
468: #############################################################
469: #############################################################
470: #############################################################
471:
472: package Apache::lonspreadsheet::Spreadsheet;
473:
474: use strict;
475: use Apache::Constants qw(:common :http);
476: use Apache::lonnet;
477: use Apache::loncoursedata;
478: use Apache::File();
479: use Safe;
480: use Safe::Hole;
481: use Opcode;
482: use GDBM_File;
483: use HTML::Entities();
484: use HTML::TokeParser;
485: use Spreadsheet::WriteExcel;
486: use Time::HiRes;
487:
488: #
489: # These global hashes are dependent on user, course and resource,
490: # and need to be initialized every time when a sheet is calculated
491: #
492: my %courseopt;
493: my %useropt;
494: my %parmhash;
495:
496: #
497: # Caches for coursewide information
498: #
499: my %Section;
500:
501: #
502: # Caches for previously calculated spreadsheets
503: #
504: my %expiredates;
505:
506: #
507: # Cache for stores of an individual user
508: #
509: my $cachedassess;
510: my %cachedstores;
511:
512: #
513: # Some hashes for stats on timing and performance
514: #
515: my %starttimes;
516: my %usedtimes;
517: my %numbertimes;
518:
519: #
520: # Directories
521: #
522: my $includedir;
523:
524: sub includedir {
525: my $self = shift;
526: $includedir = shift;
527: }
528:
529: my %spreadsheets;
530: #my %loadedcaches;
531: my %courserdatas;
532: my %userrdatas;
533: my %defaultsheets;
534: my %rowlabel_cache;
535: #my %oldsheets;
536:
537: sub complete_recalc {
538: my $self = shift;
539: undef %spreadsheets;
540: undef %courserdatas;
541: undef %userrdatas;
542: undef %defaultsheets;
543: undef %rowlabel_cache;
544: }
545:
546: sub get_sheet {
547: my $self = shift;
548: my $sheet_id = shift;
549: my $formulas;
550: # if we already have the file loaded and parsed, return the formulas
551: if (exists($self->{'sheets'}->{$sheet_id})) {
552: $formulas = $self->{'sheets'}->{$sheet_id};
553: $self->debug('retrieved '.$sheet_id);
554: } else {
555: # load the file
556: # set $error and return undef if there is an error loading
557: # parse it
558: # set $error and return undef if there is an error parsing
559: }
560: return $formulas;
561: }
562:
563: #
564: # Load previously cached student spreadsheets for this course
565: #
566: sub load_spreadsheet_expirationdates {
567: undef %expiredates;
568: my $cid=$ENV{'request.course.id'};
569: my @tmp = &Apache::lonnet::dump('nohist_expirationdates',
570: $ENV{'course.'.$cid.'.domain'},
571: $ENV{'course.'.$cid.'.num'});
572: if (lc($tmp[0]) !~ /^error/){
573: %expiredates = @tmp;
574: }
575: }
576:
577: # ===================================================== Calculated sheets cache
578: #
579: # Load previously cached student spreadsheets for this course
580: #
581: sub cachedcsheets {
582: my $cid=$ENV{'request.course.id'};
583: my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets',
584: $ENV{'course.'.$cid.'.domain'},
585: $ENV{'course.'.$cid.'.num'});
586: if ($tmp[0] !~ /^error/) {
587: my %StupidTempHash = @tmp;
588: while (my ($key,$value) = each %StupidTempHash) {
589: $Apache::lonspreadsheet::oldsheets{$key} = $value;
590: }
591: }
592: }
593:
594: #
595: # Load previously cached assessment spreadsheets for this student
596: #
597: sub cachedssheets {
598: my $self = shift;
599: my ($uname,$udom) = @_;
600: $uname = $uname || $self->{'uname'};
601: $udom = $udom || $self->{'udom'};
602: if (! exists($Apache::lonspreadsheet::loadedcaches{$uname.'_'.$udom})) {
603: my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets_'.
604: $ENV{'request.course.id'},
605: $self->{'udom'},
606: $self->{'uname'});
607: if ($tmp[0] !~ /^error/) {
608: my %TempHash = @tmp;
609: my $count = 0;
610: while (my ($key,$value) = each %TempHash) {
611: $Apache::lonspreadsheet::oldsheets{$key} = $value;
612: $count++;
613: }
614: $Apache::lonspreadsheet::loadedcaches{$self->{'uname'}.'_'.$self->{'udom'}}=1;
615: }
616: }
617: }
618:
619: # ======================================================= Forced recalculation?
620: sub checkthis {
621: my ($keyname,$time)=@_;
622: if (! exists($expiredates{$keyname})) {
623: return 0;
624: } else {
625: return ($time<$expiredates{$keyname});
626: }
627: }
628:
629: sub forcedrecalc {
630: my ($uname,$udom,$stype,$usymb)=@_;
631: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
632: my $time=$Apache::lonspreadsheet::oldsheets{$key.'.time'};
633: if ($ENV{'form.forcerecalc'}) { return 1; }
634: unless ($time) { return 1; }
635: if ($stype eq 'assesscalc') {
636: my $map=(split(/___/,$usymb))[0];
637: if (&checkthis('::assesscalc:',$time) ||
638: &checkthis('::assesscalc:'.$map,$time) ||
639: &checkthis('::assesscalc:'.$usymb,$time) ||
640: &checkthis($uname.':'.$udom.':assesscalc:',$time) ||
641: &checkthis($uname.':'.$udom.':assesscalc:'.$map,$time) ||
642: &checkthis($uname.':'.$udom.':assesscalc:'.$usymb,$time)) {
643: return 1;
644: }
645: } else {
646: if (&checkthis('::studentcalc:',$time) ||
647: &checkthis($uname.':'.$udom.':studentcalc:',$time)) {
648: return 1;
649: }
650: }
651: return 0;
652: }
653:
654:
655: ##################################################
656: ##################################################
657:
658: =pod
659:
660: =item &parmval()
661:
662: Determine the value of a parameter.
663:
664: Inputs: $what, the parameter needed, $symb, $uname, $udom, $csec
665:
666: Returns: The value of a parameter, or '' if none.
667:
668: This function cascades through the possible levels searching for a value for
669: a parameter. The levels are checked in the following order:
670: user, course (at section level and course level), map, and lonnet::metadata.
671: This function uses %parmhash, which must be tied prior to calling it.
672: This function also requires %courseopt and %useropt to be initialized for
673: this user and course.
674:
675: =cut
676:
677: ##################################################
678: ##################################################
679: sub parmval {
680: my ($what,$symb,$uname,$udom,$csec)=@_;
681: return '' if (!$symb);
682: #
683: my $cid = $ENV{'request.course.id'};
684: my $result='';
685: #
686: my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);
687: # Cascading lookup scheme
688: my $rwhat=$what;
689: $what =~ s/^parameter\_//;
690: $what =~ s/\_([^\_]+)$/\.$1/;
691: #
692: my $symbparm = $symb.'.'.$what;
693: my $mapparm = $mapname.'___(all).'.$what;
694: my $usercourseprefix = $uname.'_'.$udom.'_'.$cid;
695: #
696: my $seclevel = $usercourseprefix.'.['.$csec.'].'.$what;
697: my $seclevelr = $usercourseprefix.'.['.$csec.'].'.$symbparm;
698: my $seclevelm = $usercourseprefix.'.['.$csec.'].'.$mapparm;
699: #
700: my $courselevel = $usercourseprefix.'.'.$what;
701: my $courselevelr = $usercourseprefix.'.'.$symbparm;
702: my $courselevelm = $usercourseprefix.'.'.$mapparm;
703: # fourth, check user
704: if (defined($uname)) {
705: return $useropt{$courselevelr} if (defined($useropt{$courselevelr}));
706: return $useropt{$courselevelm} if (defined($useropt{$courselevelm}));
707: return $useropt{$courselevel} if (defined($useropt{$courselevel}));
708: }
709: # third, check course
710: if (defined($csec)) {
711: return $courseopt{$seclevelr} if (defined($courseopt{$seclevelr}));
712: return $courseopt{$seclevelm} if (defined($courseopt{$seclevelm}));
713: return $courseopt{$seclevel} if (defined($courseopt{$seclevel}));
714: }
715: #
716: return $courseopt{$courselevelr} if (defined($courseopt{$courselevelr}));
717: return $courseopt{$courselevelm} if (defined($courseopt{$courselevelm}));
718: return $courseopt{$courselevel} if (defined($courseopt{$courselevel}));
719: # second, check map parms
720: my $thisparm = $parmhash{$symbparm};
721: return $thisparm if (defined($thisparm));
722:
723: # first, check default
724: $thisparm = &Apache::lonnet::metadata($fn,$rwhat.'.default');
725: return $thisparm if (defined($thisparm));
726:
727: #Cascade Up
728: my $space=$what;
729: $space=~s/\.\w+$//;
730: if ($space ne '0') {
731: my @parts=split(/_/,$space);
732: my $id=pop(@parts);
733: my $part=join('_',@parts);
734: if ($part eq '') { $part='0'; }
735: my $newwhat=$rwhat;
736: $newwhat=~s/\Q$space\E/$part/;
737: my $partgeneral=&parmval($newwhat,$symb,$uname,$udom,$csec);
738: if (defined($partgeneral)) { return $partgeneral; }
739: }
740:
741: #nothing defined
742: return '';
743: }
744:
745: #
746: # new: Make a new spreadsheet
747: #
748: sub new {
749: my $this = shift;
750: my $class = ref($this) || $this;
751: #
752: my ($uname,$udom,$stype,$usymb)=@_;
753: #
754: my $self = {
755: uname => $uname,
756: udom => $udom,
757: type => $stype,
758: usymb => $usymb,
759: errorlog => '',
760: maxrow => '',
761: mapid => $ENV{'form.mapid'},
762: resid => $ENV{'form.resid'},
763: cid => $ENV{'request.course.id'},
764: csec => $Section{$uname.':'.$udom},
765: cnum => $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
766: cdom => $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
767: chome => $ENV{'course.'.$ENV{'request.course.id'}.'.home'},
768: coursefilename => $ENV{'request.course.fn'},
769: coursedesc => $ENV{'course.'.$ENV{'request.course.id'}.'.description'},
770: rows => [],
771: template_cells => [],
772: };
773: $self->{'uhome'} = &Apache::lonnet::homeserver($uname,$udom);
774: #
775: #
776: $self->{'formulas'} = {};
777: $self->{'constants'} = {};
778: $self->{'othersheets'} = [];
779: $self->{'rowlabel'} = {};
780: #
781: #
782: $self->{'safe'} = &initsheet($self->{'type'});
783: $self->{'root'} = $self->{'safe'}->root();
784: #
785: # Place some of the %$self items into the safe space except the safe space
786: # itself
787: my $initstring = '';
788: foreach (qw/uname udom type usymb cid csec coursefilename
789: cnum cdom chome uhome/) {
790: $initstring.= qq{\$$_="$self->{$_}";};
791: }
792: $self->{'safe'}->reval($initstring);
793: bless($self,$class);
794: return $self;
795: }
796:
797: ##
798: ## mask - used to reside in the safe space.
799: ##
800: {
801:
802: my %memoizer;
803:
804: sub mask {
805: my ($lower,$upper)=@_;
806: my $key = $lower.'_'.$upper;
807: if (exists($memoizer{$key})) {
808: return $memoizer{$key};
809: }
810: $upper = $lower if (! defined($upper));
811: #
812: my ($la,$ld) = ($lower=~/([A-Za-z]|\*)(\d+|\*)/);
813: my ($ua,$ud) = ($upper=~/([A-Za-z]|\*)(\d+|\*)/);
814: #
815: my $alpha='';
816: my $num='';
817: #
818: if (($la eq '*') || ($ua eq '*')) {
819: $alpha='[A-Za-z]';
820: } else {
821: if (($la=~/[A-Z]/) && ($ua=~/[A-Z]/) ||
822: ($la=~/[a-z]/) && ($ua=~/[a-z]/)) {
823: $alpha='['.$la.'-'.$ua.']';
824: } else {
825: $alpha='['.$la.'-Za-'.$ua.']';
826: }
827: }
828: if (($ld eq '*') || ($ud eq '*')) {
829: $num='\d+';
830: } else {
831: if (length($ld)!=length($ud)) {
832: $num.='(';
833: foreach ($ld=~m/\d/g) {
834: $num.='['.$_.'-9]';
835: }
836: if (length($ud)-length($ld)>1) {
837: $num.='|\d{'.(length($ld)+1).','.(length($ud)-1).'}';
838: }
839: $num.='|';
840: foreach ($ud=~m/\d/g) {
841: $num.='[0-'.$_.']';
842: }
843: $num.=')';
844: } else {
845: my @lda=($ld=~m/\d/g);
846: my @uda=($ud=~m/\d/g);
847: my $i;
848: my $j=0;
849: my $notdone=1;
850: for ($i=0;($i<=$#lda)&&($notdone);$i++) {
851: if ($lda[$i]==$uda[$i]) {
852: $num.=$lda[$i];
853: $j=$i;
854: } else {
855: $notdone=0;
856: }
857: }
858: if ($j<$#lda-1) {
859: $num.='('.$lda[$j+1];
860: for ($i=$j+2;$i<=$#lda;$i++) {
861: $num.='['.$lda[$i].'-9]';
862: }
863: if ($uda[$j+1]-$lda[$j+1]>1) {
864: $num.='|['.($lda[$j+1]+1).'-'.($uda[$j+1]-1).']\d{'.
865: ($#lda-$j-1).'}';
866: }
867: $num.='|'.$uda[$j+1];
868: for ($i=$j+2;$i<=$#uda;$i++) {
869: $num.='[0-'.$uda[$i].']';
870: }
871: $num.=')';
872: } else {
873: if ($lda[-1]!=$uda[-1]) {
874: $num.='['.$lda[-1].'-'.$uda[-1].']';
875: }
876: }
877: }
878: }
879: my $expression ='^'.$alpha.$num."\$";
880: $memoizer{$key} = $expression;
881: return $expression;
882: }
883:
884: }
885:
886: sub add_hash_to_safe {
887: my $self = shift;
888: my $code = <<'END';
889: #-------------------------------------------------------
890:
891: =item UWCALC(hashname,modules,units,date)
892:
893: returns the proportion of the module
894: weights not previously completed by the student.
895:
896: =over 4
897:
898: =item hashname
899:
900: name of the hash the module dates have been inserted into
901:
902: =item modules
903:
904: reference to a cell which contains a comma deliminated list of modules
905: covered by the assignment.
906:
907: =item units
908:
909: reference to a cell which contains a comma deliminated list of module
910: weights with respect to the assignment
911:
912: =item date
913:
914: reference to a cell which contains the date the assignment was completed.
915:
916: =back
917:
918: =cut
919:
920: #-------------------------------------------------------
921: sub UWCALC {
922: my ($hashname,$modules,$units,$date) = @_;
923: my @Modules = split(/,/,$modules);
924: my @Units = split(/,/,$units);
925: my $total_weight;
926: foreach (@Units) {
927: $total_weight += $_;
928: }
929: my $usum=0;
930: for (my $i=0; $i<=$#Modules; $i++) {
931: if (&HASH($hashname,$Modules[$i]) eq $date) {
932: $usum += $Units[$i];
933: }
934: }
935: return $usum/$total_weight;
936: }
937:
938: #-------------------------------------------------------
939:
940: =item CDLSUM(list)
941:
942: returns the sum of the elements in a cell which contains
943: a Comma Deliminate List of numerical values.
944: 'list' is a reference to a cell which contains a comma deliminated list.
945:
946: =cut
947:
948: #-------------------------------------------------------
949: sub CDLSUM {
950: my ($list)=@_;
951: my $sum;
952: foreach (split/,/,$list) {
953: $sum += $_;
954: }
955: return $sum;
956: }
957:
958: #-------------------------------------------------------
959:
960: =item CDLITEM(list,index)
961:
962: returns the item at 'index' in a Comma Deliminated List.
963:
964: =over 4
965:
966: =item list
967:
968: reference to a cell which contains a comma deliminated list.
969:
970: =item index
971:
972: the Perl index of the item requested (first element in list has
973: an index of 0)
974:
975: =back
976:
977: =cut
978:
979: #-------------------------------------------------------
980: sub CDLITEM {
981: my ($list,$index)=@_;
982: my @Temp = split/,/,$list;
983: return $Temp[$index];
984: }
985:
986: #-------------------------------------------------------
987:
988: =item CDLHASH(name,key,value)
989:
990: loads a comma deliminated list of keys into
991: the hash 'name', all with a value of 'value'.
992:
993: =over 4
994:
995: =item name
996:
997: name of the hash.
998:
999: =item key
1000:
1001: (a pointer to) a comma deliminated list of keys.
1002:
1003: =item value
1004:
1005: a single value to be entered for each key.
1006:
1007: =back
1008:
1009: =cut
1010:
1011: #-------------------------------------------------------
1012: sub CDLHASH {
1013: my ($name,$key,$value)=@_;
1014: my @Keys;
1015: my @Values;
1016: # Check to see if we have multiple $key values
1017: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
1018: my $keymask = &mask($key);
1019: # Assume the keys are addresses
1020: my @Temp = grep /$keymask/,keys(%sheet_values);
1021: @Keys = $sheet_values{@Temp};
1022: } else {
1023: $Keys[0]= $key;
1024: }
1025: my @Temp;
1026: foreach $key (@Keys) {
1027: @Temp = (@Temp, split/,/,$key);
1028: }
1029: @Keys = @Temp;
1030: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
1031: my $valmask = &mask($value);
1032: my @Temp = grep /$valmask/,keys(%sheet_values);
1033: @Values =$sheet_values{@Temp};
1034: } else {
1035: $Values[0]= $value;
1036: }
1037: $value = $Values[0];
1038: # Add values to hash
1039: for (my $i = 0; $i<=$#Keys; $i++) {
1040: my $key = $Keys[$i];
1041: if (! exists ($hashes{$name}->{$key})) {
1042: $hashes{$name}->{$key}->[0]=$value;
1043: } else {
1044: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
1045: $hashes{$name}->{$key} = \@Temp;
1046: }
1047: }
1048: return "hash '$name' updated";
1049: }
1050:
1051: #-------------------------------------------------------
1052:
1053: =item GETHASH(name,key,index)
1054:
1055: returns the element in hash 'name'
1056: reference by the key 'key', at index 'index' in the values list.
1057:
1058: =cut
1059:
1060: #-------------------------------------------------------
1061: sub GETHASH {
1062: my ($name,$key,$index)=@_;
1063: if (! defined($index)) {
1064: $index = 0;
1065: }
1066: if ($key =~ /^[A-z]\d+$/) {
1067: $key = $sheet_values{$key};
1068: }
1069: return $hashes{$name}->{$key}->[$index];
1070: }
1071:
1072: #-------------------------------------------------------
1073:
1074: =item CLEARHASH(name)
1075:
1076: clears all the values from the hash 'name'
1077:
1078: =item CLEARHASH(name,key)
1079:
1080: clears all the values from the hash 'name' associated with the given key.
1081:
1082: =cut
1083:
1084: #-------------------------------------------------------
1085: sub CLEARHASH {
1086: my ($name,$key)=@_;
1087: if (defined($key)) {
1088: if (exists($hashes{$name}->{$key})) {
1089: $hashes{$name}->{$key}=undef;
1090: return "hash '$name' key '$key' cleared";
1091: }
1092: } else {
1093: if (exists($hashes{$name})) {
1094: $hashes{$name}=undef;
1095: return "hash '$name' cleared";
1096: }
1097: }
1098: return "Error in clearing hash";
1099: }
1100:
1101: #-------------------------------------------------------
1102:
1103: =item HASH(name,key,value)
1104:
1105: loads values into an internal hash. If a key
1106: already has a value associated with it, the values are sorted numerically.
1107:
1108: =item HASH(name,key)
1109:
1110: returns the 0th value in the hash 'name' associated with 'key'.
1111:
1112: =cut
1113:
1114: #-------------------------------------------------------
1115: sub HASH {
1116: my ($name,$key,$value)=@_;
1117: my @Keys;
1118: undef @Keys;
1119: my @Values;
1120: # Check to see if we have multiple $key values
1121: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
1122: my $keymask = &mask($key);
1123: # Assume the keys are addresses
1124: my @Temp = grep /$keymask/,keys(%sheet_values);
1125: @Keys = $sheet_values{@Temp};
1126: } else {
1127: $Keys[0]= $key;
1128: }
1129: # If $value is empty, return the first value associated
1130: # with the first key.
1131: if (! $value) {
1132: return $hashes{$name}->{$Keys[0]}->[0];
1133: }
1134: # Check to see if we have multiple $value(s)
1135: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
1136: my $valmask = &mask($value);
1137: my @Temp = grep /$valmask/,keys(%sheet_values);
1138: @Values =$sheet_values{@Temp};
1139: } else {
1140: $Values[0]= $value;
1141: }
1142: # Add values to hash
1143: for (my $i = 0; $i<=$#Keys; $i++) {
1144: my $key = $Keys[$i];
1145: my $value = ($i<=$#Values ? $Values[$i] : $Values[0]);
1146: if (! exists ($hashes{$name}->{$key})) {
1147: $hashes{$name}->{$key}->[0]=$value;
1148: } else {
1149: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
1150: $hashes{$name}->{$key} = \@Temp;
1151: }
1152: }
1153: return $Values[-1];
1154: }
1155: END
1156: $self->{'safe'}->reval($code);
1157: return;
1158: }
1159:
1160: sub initsheet {
1161: my $safeeval = new Safe(shift);
1162: my $safehole = new Safe::Hole;
1163: $safeeval->permit("entereval");
1164: $safeeval->permit(":base_math");
1165: $safeeval->permit("sort");
1166: $safeeval->deny(":base_io");
1167: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1168: $safehole->wrap(\&mask,$safeeval,'&mask');
1169: $safeeval->share('$@');
1170: my $code=<<'ENDDEFS';
1171: # ---------------------------------------------------- Inside of the safe space
1172: #
1173: # f: formulas
1174: # t: intermediate format (variable references expanded)
1175: # v: output values
1176: # c: preloaded constants (A-column)
1177: # rl: row label
1178: # os: other spreadsheets (for student spreadsheet only)
1179:
1180: undef %sheet_values; # Holds the (computed, final) values for the sheet
1181: # This is only written to by &calc, the spreadsheet computation routine.
1182: # It is read by many functions
1183: undef %t; # Holds the values of the spreadsheet temporarily. Set in &sett,
1184: # which does the translation of strings like C5 into the value in C5.
1185: # Used in &calc - %t holds the values that are actually eval'd.
1186: undef %f; # Holds the formulas for each cell. This is the users
1187: # (spreadsheet authors) data for each cell.
1188: undef %c; # Holds the constants for a sheet. In the assessment
1189: # sheets, this is the A column. Used in &MINPARM, &MAXPARM, &expandnamed,
1190: # &sett, and &constants. There is no &getconstants.
1191: # &constants is called by &loadstudent, &loadcourse, &load assessment,
1192: undef @os; # Holds the names of other spreadsheets - this is used to specify
1193: # the spreadsheets that are available for the assessment sheet.
1194: # Set by &setothersheets. &setothersheets is called by &handler. A
1195: # related subroutine is &othersheets.
1196: $errorlog = '';
1197:
1198: $maxrow = 0;
1199: $type = '';
1200:
1201: # filename/reference of the sheet
1202: $filename = '';
1203:
1204: # user data
1205: $uname = '';
1206: $uhome = '';
1207: $udom = '';
1208:
1209: # course data
1210:
1211: $csec = '';
1212: $chome= '';
1213: $cnum = '';
1214: $cdom = '';
1215: $cid = '';
1216: $coursefilename = '';
1217:
1218: # symb
1219:
1220: $usymb = '';
1221:
1222: # error messages
1223: $errormsg = '';
1224:
1225: #-------------------------------------------------------
1226:
1227: =item NUM(range)
1228:
1229: returns the number of items in the range.
1230:
1231: =cut
1232:
1233: #-------------------------------------------------------
1234: sub NUM {
1235: my $mask=&mask(@_);
1236: my $num= $#{@{grep(/$mask/,keys(%sheet_values))}}+1;
1237: return $num;
1238: }
1239:
1240: sub BIN {
1241: my ($low,$high,$lower,$upper)=@_;
1242: my $mask=&mask($lower,$upper);
1243: my $num=0;
1244: foreach (grep /$mask/,keys(%sheet_values)) {
1245: if (($sheet_values{$_}>=$low) && ($sheet_values{$_}<=$high)) {
1246: $num++;
1247: }
1248: }
1249: return $num;
1250: }
1251:
1252:
1253: #-------------------------------------------------------
1254:
1255: =item SUM(range)
1256:
1257: returns the sum of items in the range.
1258:
1259: =cut
1260:
1261: #-------------------------------------------------------
1262: sub SUM {
1263: my $mask=&mask(@_);
1264: my $sum=0;
1265: foreach (grep /$mask/,keys(%sheet_values)) {
1266: $sum+=$sheet_values{$_};
1267: }
1268: return $sum;
1269: }
1270:
1271: #-------------------------------------------------------
1272:
1273: =item MEAN(range)
1274:
1275: compute the average of the items in the range.
1276:
1277: =cut
1278:
1279: #-------------------------------------------------------
1280: sub MEAN {
1281: my $mask=&mask(@_);
1282: # $errorlog.='(mask = '.$mask.' )';
1283: my $sum=0;
1284: my $num=0;
1285: foreach (grep /$mask/,keys(%sheet_values)) {
1286: $sum+=$sheet_values{$_};
1287: $num++;
1288: }
1289: if ($num) {
1290: return $sum/$num;
1291: } else {
1292: return undef;
1293: }
1294: }
1295:
1296: #-------------------------------------------------------
1297:
1298: =item STDDEV(range)
1299:
1300: compute the standard deviation of the items in the range.
1301:
1302: =cut
1303:
1304: #-------------------------------------------------------
1305: sub STDDEV {
1306: my $mask=&mask(@_);
1307: # $errorlog.='(mask = '.$mask.' )';
1308: my $sum=0; my $num=0;
1309: foreach (grep /$mask/,keys(%sheet_values)) {
1310: $sum+=$sheet_values{$_};
1311: $num++;
1312: }
1313: unless ($num>1) { return undef; }
1314: my $mean=$sum/$num;
1315: $sum=0;
1316: foreach (grep /$mask/,keys(%sheet_values)) {
1317: $sum+=($sheet_values{$_}-$mean)**2;
1318: }
1319: return sqrt($sum/($num-1));
1320: }
1321:
1322: #-------------------------------------------------------
1323:
1324: =item PROD(range)
1325:
1326: compute the product of the items in the range.
1327:
1328: =cut
1329:
1330: #-------------------------------------------------------
1331: sub PROD {
1332: my $mask=&mask(@_);
1333: my $prod=1;
1334: foreach (grep /$mask/,keys(%sheet_values)) {
1335: $prod*=$sheet_values{$_};
1336: }
1337: return $prod;
1338: }
1339:
1340: #-------------------------------------------------------
1341:
1342: =item MAX(range)
1343:
1344: compute the maximum of the items in the range.
1345:
1346: =cut
1347:
1348: #-------------------------------------------------------
1349: sub MAX {
1350: my $mask=&mask(@_);
1351: my $max='-';
1352: foreach (grep /$mask/,keys(%sheet_values)) {
1353: unless ($max) { $max=$sheet_values{$_}; }
1354: if (($sheet_values{$_}>$max) || ($max eq '-')) { $max=$sheet_values{$_}; }
1355: }
1356: return $max;
1357: }
1358:
1359: #-------------------------------------------------------
1360:
1361: =item MIN(range)
1362:
1363: compute the minimum of the items in the range.
1364:
1365: =cut
1366:
1367: #-------------------------------------------------------
1368: sub MIN {
1369: my $mask=&mask(@_);
1370: my $min='-';
1371: foreach (grep /$mask/,keys(%sheet_values)) {
1372: unless ($max) { $max=$sheet_values{$_}; }
1373: if (($sheet_values{$_}<$min) || ($min eq '-')) {
1374: $min=$sheet_values{$_};
1375: }
1376: }
1377: return $min;
1378: }
1379:
1380: #-------------------------------------------------------
1381:
1382: =item SUMMAX(num,lower,upper)
1383:
1384: compute the sum of the largest 'num' items in the range from
1385: 'lower' to 'upper'
1386:
1387: =cut
1388:
1389: #-------------------------------------------------------
1390: sub SUMMAX {
1391: my ($num,$lower,$upper)=@_;
1392: my $mask=&mask($lower,$upper);
1393: my @inside=();
1394: foreach (grep /$mask/,keys(%sheet_values)) {
1395: push (@inside,$sheet_values{$_});
1396: }
1397: @inside=sort(@inside);
1398: my $sum=0; my $i;
1399: for ($i=$#inside;(($i>$#inside-$num) && ($i>=0));$i--) {
1400: $sum+=$inside[$i];
1401: }
1402: return $sum;
1403: }
1404:
1405: #-------------------------------------------------------
1406:
1407: =item SUMMIN(num,lower,upper)
1408:
1409: compute the sum of the smallest 'num' items in the range from
1410: 'lower' to 'upper'
1411:
1412: =cut
1413:
1414: #-------------------------------------------------------
1415: sub SUMMIN {
1416: my ($num,$lower,$upper)=@_;
1417: my $mask=&mask($lower,$upper);
1418: my @inside=();
1419: foreach (grep /$mask/,keys(%sheet_values)) {
1420: $inside[$#inside+1]=$sheet_values{$_};
1421: }
1422: @inside=sort(@inside);
1423: my $sum=0; my $i;
1424: for ($i=0;(($i<$num) && ($i<=$#inside));$i++) {
1425: $sum+=$inside[$i];
1426: }
1427: return $sum;
1428: }
1429:
1430: #-------------------------------------------------------
1431:
1432: =item MINPARM(parametername)
1433:
1434: Returns the minimum value of the parameters matching the parametername.
1435: parametername should be a string such as 'duedate'.
1436:
1437: =cut
1438:
1439: #-------------------------------------------------------
1440: sub MINPARM {
1441: my ($expression) = @_;
1442: my $min = undef;
1443: study($expression);
1444: foreach $parameter (keys(%c)) {
1445: next if ($parameter !~ /$expression/);
1446: if ((! defined($min)) || ($min > $c{$parameter})) {
1447: $min = $c{$parameter}
1448: }
1449: }
1450: return $min;
1451: }
1452:
1453: #-------------------------------------------------------
1454:
1455: =item MAXPARM(parametername)
1456:
1457: Returns the maximum value of the parameters matching the input parameter name.
1458: parametername should be a string such as 'duedate'.
1459:
1460: =cut
1461:
1462: #-------------------------------------------------------
1463: sub MAXPARM {
1464: my ($expression) = @_;
1465: my $max = undef;
1466: study($expression);
1467: foreach $parameter (keys(%c)) {
1468: next if ($parameter !~ /$expression/);
1469: if ((! defined($min)) || ($max < $c{$parameter})) {
1470: $max = $c{$parameter}
1471: }
1472: }
1473: return $max;
1474: }
1475:
1476: sub calc {
1477: # $errorlog .= "\%t has ".(keys(%t))." keys\n";
1478: %sheet_values = %t; # copy %t into %sheet_values.
1479: # $errorlog .= "\%sheet_values has ".(keys(%sheet_values))." keys\n";
1480: my $notfinished=1;
1481: my $lastcalc='';
1482: my $depth=0;
1483: while ($notfinished) {
1484: $notfinished=0;
1485: while (my ($cell,$value) = each(%t)) {
1486: my $old=$sheet_values{$cell};
1487: $sheet_values{$cell}=eval $value;
1488: if ($@) {
1489: undef %sheet_values;
1490: return $cell.': '.$@;
1491: }
1492: if ($sheet_values{$cell} ne $old) {
1493: $notfinished=1;
1494: $lastcalc=$cell;
1495: }
1496: }
1497: $depth++;
1498: if ($depth>100) {
1499: undef %sheet_values;
1500: return $lastcalc.': Maximum calculation depth exceeded';
1501: }
1502: }
1503: return '';
1504: }
1505:
1506: # ------------------------------------------- End of "Inside of the safe space"
1507: ENDDEFS
1508: $safeeval->reval($code);
1509: return $safeeval;
1510: }
1511:
1512:
1513: #
1514: # expandnamed used to reside in the safe space
1515: #
1516: sub expandnamed {
1517: my $self = shift;
1518: my $expression=shift;
1519: if ($expression=~/^\&/) {
1520: my ($func,$var,$formula)=($expression=~/^\&(\w+)\(([^\;]+)\;(.*)\)/);
1521: my @vars=split(/\W+/,$formula);
1522: my %values=();
1523: foreach my $varname ( @vars ) {
1524: if ($varname=~/\D/) {
1525: $formula=~s/$varname/'$c{\''.$varname.'\'}'/ge;
1526: $varname=~s/$var/\([\\w:\\- ]\+\)/g;
1527: foreach (keys(%{$self->{'constants'}})) {
1528: if ($_=~/$varname/) {
1529: $values{$1}=1;
1530: }
1531: }
1532: }
1533: }
1534: if ($func eq 'EXPANDSUM') {
1535: my $result='';
1536: foreach (keys(%values)) {
1537: my $thissum=$formula;
1538: $thissum=~s/$var/$_/g;
1539: $result.=$thissum.'+';
1540: }
1541: $result=~s/\+$//;
1542: return $result;
1543: } else {
1544: return 0;
1545: }
1546: } else {
1547: # it is not a function, so it is a parameter name
1548: # We should do the following:
1549: # 1. Take the list of parameter names
1550: # 2. look through the list for ones that match the parameter we want
1551: # 3. If there are no collisions, return the one that matches
1552: # 4. If there is a collision, return 'bad parameter name error'
1553: my $returnvalue = '';
1554: my @matches = ();
1555: $#matches = -1;
1556: study $expression;
1557: my $parameter;
1558: foreach $parameter (keys(%{$self->{'constants'}})) {
1559: push @matches,$parameter if ($parameter =~ /$expression/);
1560: }
1561: if (scalar(@matches) == 0) {
1562: $returnvalue = 'unmatched parameter: '.$parameter;
1563: } elsif (scalar(@matches) == 1) {
1564: # why do we not do this lookup here, instead of delaying it?
1565: $returnvalue = '$c{\''.$matches[0].'\'}';
1566: } elsif (scalar(@matches) > 0) {
1567: # more than one match. Look for a concise one
1568: $returnvalue = "'non-unique parameter name : $expression'";
1569: foreach (@matches) {
1570: if (/^$expression$/) {
1571: # why do we not do this lookup here?
1572: $returnvalue = '$c{\''.$_.'\'}';
1573: }
1574: }
1575: } else {
1576: # There was a negative number of matches, which indicates
1577: # something is wrong with reality. Better warn the user.
1578: $returnvalue = 'bizzare parameter: '.$parameter;
1579: }
1580: return $returnvalue;
1581: }
1582: }
1583:
1584: #
1585: # sett used to reside in the safe space
1586: #
1587: sub sett {
1588: my $self = shift;
1589: my %t=();
1590: my $pattern='';
1591: if ($self->{'type'} eq 'assesscalc') {
1592: $pattern='A';
1593: } else {
1594: $pattern='[A-Z]';
1595: }
1596: # Deal with the template row
1597: foreach my $col ($self->template_cells()) {
1598: next if ($col=~/^$pattern/);
1599: foreach my $trow ($self->rows()) {
1600: # Get the name of this cell
1601: my $lb=$col.$trow;
1602: # Grab the template declaration
1603: $t{$lb}=$self->formula('template_'.$col);
1604: # Replace '#' with the row number
1605: $t{$lb}=~s/\#/$trow/g;
1606: # Replace '....' with ','
1607: $t{$lb}=~s/\.\.+/\,/g;
1608: # Replace 'A0' with the value from 'A0'
1609: $t{$lb}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
1610: # Replace parameters
1611: $t{$lb}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
1612: }
1613: }
1614: # Deal with the normal cells
1615: foreach ($self->formulas_keys()) {
1616: next if ($_=~/template\_/);
1617: if (($_=~/^$pattern(\d+)/) && ($1)) {
1618: if ($self->formula($_) !~ /^\!/) {
1619: $t{$_}=$self->{'constants'}->{$_};
1620: }
1621: } else {
1622: $t{$_}=$self->formula($_);
1623: $t{$_}=~s/\.\.+/\,/g;
1624: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
1625: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
1626: }
1627: }
1628: # For inserted lines, [B-Z] is also valid
1629: if ($self->{'type'} ne 'assesscalc') {
1630: foreach ($self->formulas_keys()) {
1631: next if ($_ !~ /[B-Z](\d+)/);
1632: next if ($self->formula('A'.$1) !~ /^[\~\-]/);
1633: $t{$_}=$self->formula($_);
1634: $t{$_}=~s/\.\.+/\,/g;
1635: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
1636: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
1637: }
1638: }
1639: # For some reason 'A0' gets special treatment... This seems superfluous
1640: # but I imagine it is here for a reason.
1641: $t{'A0'}=$self->formula('A0');
1642: $t{'A0'}=~s/\.\.+/\,/g;
1643: $t{'A0'}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
1644: $t{'A0'}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
1645: # Put %t into the safe space
1646: %{$self->{'safe'}->varglob('t')}=%t;
1647: }
1648:
1649:
1650: ###########################################
1651: ### Row output routines ###
1652: ###########################################
1653: #
1654: # get_row: Produce output row n from sheet by calling the appropriate routine
1655: #
1656: sub get_row {
1657: my $self = shift;
1658: my ($n) = @_;
1659: my ($rowlabel,@rowdata);
1660: if ($n eq '-') {
1661: ($rowlabel,@rowdata) = $self->templaterow();
1662: } elsif ($self->{'type'} eq 'studentcalc') {
1663: ($rowlabel,@rowdata) = $self->outrowassess($n);
1664: } else {
1665: ($rowlabel,@rowdata) = $self->outrow($n);
1666: }
1667: return ($rowlabel,@rowdata);
1668: }
1669:
1670: sub templaterow {
1671: my $self = shift;
1672: my @cols=();
1673: my $rowlabel = 'Template</td><td> ';
1674: foreach my $n ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1675: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1676: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1677: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1678: push(@cols,{ name => 'template_'.$_,
1679: formula => $self->formula('template_'.$n),
1680: value => $self->value('template_'.$n) });
1681: }
1682: return ($rowlabel,@cols);
1683: }
1684:
1685: sub outrowassess {
1686: my $self = shift;
1687: # $n is the current row number
1688: my ($n) = @_;
1689: my @cols=();
1690: my $rowlabel='';
1691: if ($n) {
1692: my ($usy,$ufn)=split(/__&&&\__/,$self->formula('A'.$n));
1693: if (exists($self->{'rowlabel'}->{$usy})) {
1694: # This is dumb, but we need the information when we output
1695: # the html version of the studentcalc spreadsheet for the
1696: # links to the assesscalc sheets.
1697: $rowlabel = $self->{'rowlabel'}->{$usy}.':'.
1698: &Apache::lonnet::escape($ufn);
1699: } else {
1700: $rowlabel = '';
1701: }
1702: } elsif ($ENV{'request.role'} =~ /^st\./) {
1703: $rowlabel = 'Summary</td><td>0';
1704: } else {
1705: $rowlabel = 'Export</td><td>0';
1706: }
1707: foreach ('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: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1710: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1711: push(@cols,{ name => $_.$n,
1712: formula => $self->formula($_.$n),
1713: value => $self->value($_.$n)});
1714: }
1715: return ($rowlabel,@cols);
1716: }
1717:
1718: sub outrow {
1719: my $self = shift;
1720: my ($n)=@_;
1721: my @cols=();
1722: my $rowlabel;
1723: if ($n) {
1724: $rowlabel = $self->{'rowlabel'}->{$self->formula('A'.$n)};
1725: } else {
1726: if ($self->{'type'} eq 'classcalc') {
1727: $rowlabel = 'Summary</td><td>0';
1728: } else {
1729: $rowlabel = 'Export</td><td>0';
1730: }
1731: }
1732: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1733: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1734: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1735: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1736: push(@cols,{ name => $_.$n,
1737: formula => $self->formula($_.$n),
1738: value => $self->value($_.$n)});
1739: }
1740: return ($rowlabel,@cols);
1741: }
1742:
1743: ########################################################
1744: #### Spreadsheet calculation methods #####
1745: ########################################################
1746: #
1747: # calcsheet: makes all the calls to compute the spreadsheet.
1748: #
1749: sub calcsheet {
1750: my $self = shift;
1751: $self->sync_safe_space();
1752: $self->clear_errorlog();
1753: $self->sett();
1754: my $result = $self->{'safe'}->reval('&calc();');
1755: %{$self->{'values'}} = %{$self->{'safe'}->varglob('sheet_values')};
1756: # $self->logthis($self->get_errorlog());
1757: return $result;
1758: }
1759:
1760: ##
1761: ## sync_safe_space: Called by calcsheet to make sure all the data we
1762: # need to calculate is placed into the safe space
1763: ##
1764: sub sync_safe_space {
1765: my $self = shift;
1766: # Inside the safe space 'formulas' has a diabolical alter-ego named 'f'.
1767: %{$self->{'safe'}->varglob('f')}=%{$self->{'formulas'}};
1768: # 'constants' leads a peaceful hidden life of 'c'.
1769: %{$self->{'safe'}->varglob('c')}=%{$self->{'constants'}};
1770: # 'othersheets' hides as 'os', a disguise few can penetrate.
1771: @{$self->{'safe'}->varglob('os')}=@{$self->{'othersheets'}};
1772: }
1773:
1774: ##
1775: ## Retrieve the error log from the safe space (used for debugging)
1776: ##
1777: sub get_errorlog {
1778: my $self = shift;
1779: $self->{'errorlog'} = ${$self->{'safe'}->varglob('errorlog')};
1780: return $self->{'errorlog'};
1781: }
1782:
1783: ##
1784: ## Clear the error log inside the safe space
1785: ##
1786: sub clear_errorlog {
1787: my $self = shift;
1788: ${$self->{'safe'}->varglob('errorlog')} = '';
1789: $self->{'errorlog'} = '';
1790: }
1791:
1792:
1793: ########################################################
1794: #### Spreadsheet content retrieval/setting methods #####
1795: ########################################################
1796: ##
1797: ## constants: either set or get the constants
1798: ##
1799: ##
1800: sub constants {
1801: my $self=shift;
1802: my ($constants) = @_;
1803: if (defined($constants)) {
1804: if (! ref($constants)) {
1805: my %tmp = @_;
1806: $constants = \%tmp;
1807: }
1808: $self->{'constants'} = $constants;
1809: return;
1810: } else {
1811: return %{$self->{'constants'}};
1812: }
1813: }
1814:
1815: ##
1816: ## formulas: either set or get the formulas
1817: ##
1818: sub formulas {
1819: my $self=shift;
1820: my ($formulas) = @_;
1821: if (defined($formulas)) {
1822: if (! ref($formulas)) {
1823: my %tmp = @_;
1824: $formulas = \%tmp;
1825: }
1826: $self->{'formulas'} = $formulas;
1827: $self->{'rows'} = [];
1828: $self->{'template_cells'} = [];
1829: return;
1830: } else {
1831: return %{$self->{'formulas'}};
1832: }
1833: }
1834:
1835: ##
1836: ## formulas_keys: Return the keys to the formulas hash.
1837: ##
1838: sub formulas_keys {
1839: my $self = shift;
1840: my @keys = keys(%{$self->{'formulas'}});
1841: return keys(%{$self->{'formulas'}});
1842: }
1843:
1844: ##
1845: ## formula: Return the formula for a given cell in the spreadsheet
1846: ## returns '' if the cell does not have a formula or does not exist
1847: ##
1848: sub formula {
1849: my $self = shift;
1850: my $cell = shift;
1851: if (defined($cell) && exists($self->{'formulas'}->{$cell})) {
1852: return $self->{'formulas'}->{$cell};
1853: }
1854: return '';
1855: }
1856:
1857: ##
1858: ## logthis: write the input to lonnet.log
1859: ##
1860: sub logthis {
1861: my $self = shift;
1862: my $message = shift;
1863: &Apache::lonnet::logthis($self->{'type'}.':'.
1864: $self->{'uname'}.':'.$self->{'udom'}.':'.
1865: $message);
1866: return;
1867: }
1868:
1869: ##
1870: ## dump_formulas_to_log: makes lonnet.log huge...
1871: ##
1872: sub dump_formulas_to_log {
1873: my $self =shift;
1874: $self->logthis("Spreadsheet formulas");
1875: $self->logthis("--------------------------------------------------------");
1876: while (my ($cell, $formula) = each(%{$self->{'formulas'}})) {
1877: $self->logthis(' '.$cell.' = '.$formula);
1878: }
1879: $self->logthis("--------------------------------------------------------");}
1880:
1881: ##
1882: ## value: returns the computed value of a particular cell
1883: ##
1884: sub value {
1885: my $self = shift;
1886: my $cell = shift;
1887: if (defined($cell) && exists($self->{'values'}->{$cell})) {
1888: return $self->{'values'}->{$cell};
1889: }
1890: return '';
1891: }
1892:
1893: ##
1894: ## dump_values_to_log: makes lonnet.log huge...
1895: ##
1896: sub dump_values_to_log {
1897: my $self =shift;
1898: $self->logthis("Spreadsheet Values");
1899: $self->logthis("--------------------------------------------------------");
1900: while (my ($cell, $value) = each(%{$self->{'values'}})) {
1901: $self->logthis(' '.$cell.' = '.$value);
1902: }
1903: $self->logthis("--------------------------------------------------------");}
1904:
1905: ##
1906: ## Yet another debugging function
1907: ##
1908: sub dump_hash_to_log {
1909: my $self= shift();
1910: my %tmp = @_;
1911: if (@_<2) {
1912: %tmp = %{$_[0]};
1913: }
1914: $self->logthis('---------------------------- (entries end with ":"');
1915: while (my ($key,$val) = each (%tmp)) {
1916: $self->logthis($key.' = '.$val.':');
1917: }
1918: $self->logthis('---------------------------- (entries end with ":"');
1919: }
1920:
1921: ################################
1922: ## Helper functions ##
1923: ################################
1924: ##
1925: ## rebuild_stats: rebuilds the rows and template_cells arrays
1926: ##
1927: sub rebuild_stats {
1928: my $self = shift;
1929: $self->{'rows'}=[];
1930: $self->{'template_cells'}=[];
1931: foreach my $cell($self->formulas_keys()) {
1932: push(@{$self->{'rows'}},$1) if ($cell =~ /^A(\d+)/ && $1 != 0);
1933: push(@{$self->{'template_cells'}},$1) if ($cell =~ /^template_(\w+)/);
1934: }
1935: return;
1936: }
1937:
1938: ##
1939: ## template_cells returns a list of the cells defined in the template row
1940: ##
1941: sub template_cells {
1942: my $self = shift;
1943: $self->rebuild_stats() if (!@{$self->{'template_cells'}});
1944: return @{$self->{'template_cells'}};
1945: }
1946:
1947: ##
1948: ## rows returns a list of the names of cells defined in the A column
1949: ##
1950: sub rows {
1951: my $self = shift;
1952: $self->rebuild_stats() if (!@{$self->{'rows'}});
1953: return @{$self->{'rows'}};
1954: }
1955:
1956: ##
1957: ## Sigh....
1958: ##
1959: sub setothersheets {
1960: my $self = shift;
1961: my @othersheets = @_;
1962: $self->{'othersheets'} = \@othersheets;
1963: }
1964:
1965: ##
1966: ## rowlabels: get or set the rowlabels hash from the spreadsheet.
1967: ##
1968: sub rowlabels {
1969: my $self = shift;
1970: my ($rowlabel) = @_;
1971: if (defined($rowlabel)) {
1972: if (! ref($rowlabel)) {
1973: my %tmp = @_;
1974: $rowlabel = \%tmp;
1975: }
1976: $self->{'rowlabel'}=$rowlabel;
1977: return;
1978: } else {
1979: return %{$self->{'rowlabel'}} if (defined($self->{'rowlabel'}));
1980: }
1981: }
1982:
1983: ##
1984: ## gettitle: returns a title for the spreadsheet.
1985: ##
1986: sub gettitle {
1987: my $self = shift;
1988: if ($self->{'type'} eq 'classcalc') {
1989: return $self->{'coursedesc'};
1990: } elsif ($self->{'type'} eq 'studentcalc') {
1991: return 'Grades for '.$self->{'uname'}.'@'.$self->{'udom'};
1992: } elsif ($self->{'type'} eq 'assesscalc') {
1993: if (($self->{'usymb'} eq '_feedback') ||
1994: ($self->{'usymb'} eq '_evaluation') ||
1995: ($self->{'usymb'} eq '_discussion') ||
1996: ($self->{'usymb'} eq '_tutoring')) {
1997: my $title = $self->{'usymb'};
1998: $title =~ s/^_//;
1999: $title = ucfirst($title);
2000: return $title;
2001: }
2002: return if (! defined($self->{'mapid'}) ||
2003: $self->{'mapid'} !~ /^\d+$/);
2004: my $mapid = $self->{'mapid'};
2005: return if (! defined($self->{'resid'}) ||
2006: $self->{'resid'} !~ /^\d+$/);
2007: my $resid = $self->{'resid'};
2008: my %course_db;
2009: tie(%course_db,'GDBM_File',$self->{'coursefilename'}.'.db',
2010: &GDBM_READER(),0640);
2011: return if (! tied(%course_db));
2012: my $key = 'title_'.$mapid.'.'.$resid;
2013: my $title = '';
2014: if (exists($course_db{$key})) {
2015: $title = $course_db{$key};
2016: } else {
2017: $title = $self->{'usymb'};
2018: }
2019: untie (%course_db);
2020: return $title;
2021: }
2022: }
2023:
2024: #
2025: # Export of A-row
2026: #
2027: sub exportdata {
2028: my $self=shift;
2029: my @exportarray=();
2030: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
2031: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
2032: push(@exportarray,$self->value($_.'0'));
2033: }
2034: return @exportarray;
2035: }
2036:
2037: ##
2038: ## update_student_sheet: experimental function
2039: ##
2040: sub update_student_sheet{
2041: my $self = shift;
2042: my ($r,$c) = @_;
2043: # Load in the studentcalc sheet
2044: $self->readsheet('default_studentcalc');
2045: # Determine the structure (contained assessments, etc) of the sheet
2046: $self->updatesheet();
2047: # Load in the cached sheets for this student
2048: $self->cachedssheets();
2049: # Load in the (possibly cached) data from the assessment sheets
2050: $self->loadstudent($r,$c);
2051: # Compute the sheet
2052: $self->calcsheet();
2053: }
2054:
2055: #
2056: # sort_indicies: returns an ordered list of the rows of the spreadsheet
2057: #
2058: sub sort_indicies {
2059: my $self = shift;
2060: my @sortidx=();
2061: #
2062: if ($self->{'type'} eq 'classcalc') {
2063: my @sortby=(undef);
2064: # Skip row 0
2065: for (my $row=1;$row<=$self->{'maxrow'};$row++) {
2066: my (undef,$sname,$sdom,$fullname,$section,$id) =
2067: split(':',$self->{'rowlabel'}->{$self->formula('A'.$row)});
2068: push (@sortby, lc($fullname));
2069: push (@sortidx, $row);
2070: }
2071: @sortidx = sort { $sortby[$a] cmp $sortby[$b]; } @sortidx;
2072: } elsif ($self->{'type'} eq 'studentcalc') {
2073: my @sortby1=(undef);
2074: my @sortby2=(undef);
2075: # Skip row 0
2076: for (my $row=1;$row<=$self->{'maxrow'};$row++) {
2077: my ($key,undef) = split(/__&&&\__/,$self->formula('A'.$row));
2078: my $rowlabel = $self->{'rowlabel'}->{$key};
2079: my (undef,$symb,$mapid,$resid,$title,$ufn) =
2080: split(':',$rowlabel);
2081: $ufn = &Apache::lonnet::unescape($ufn);
2082: $symb = &Apache::lonnet::unescape($symb);
2083: $title = &Apache::lonnet::unescape($title);
2084: my ($sequence) = ($symb =~ /\/([^\/]*\.sequence)/);
2085: if ($sequence eq '') {
2086: $sequence = $symb;
2087: }
2088: push (@sortby1, $sequence);
2089: push (@sortby2, $title);
2090: push (@sortidx, $row);
2091: }
2092: @sortidx = sort { $sortby1[$a] cmp $sortby1[$b] ||
2093: $sortby2[$a] cmp $sortby2[$b] } @sortidx;
2094: } else {
2095: my @sortby=(undef);
2096: # Skip row 0
2097: $self->sync_safe_space();
2098: for (my $row=1;$row<=$self->{'maxrow'};$row++) {
2099: push (@sortby, $self->{'safe'}->reval('$f{"A'.$row.'"}'));
2100: push (@sortidx, $row);
2101: }
2102: @sortidx = sort { $sortby[$a] cmp $sortby[$b]; } @sortidx;
2103: }
2104: return @sortidx;
2105: }
2106:
2107: #############################################################
2108: ### ###
2109: ### Spreadsheet Output Routines ###
2110: ### ###
2111: #############################################################
2112:
2113: ############################################
2114: ## HTML output routines ##
2115: ############################################
2116: sub html_editable_cell {
2117: my ($cell,$bgcolor) = @_;
2118: my $result;
2119: my ($name,$formula,$value);
2120: if (defined($cell)) {
2121: $name = $cell->{'name'};
2122: $formula = $cell->{'formula'};
2123: $value = $cell->{'value'};
2124: }
2125: $name = '' if (! defined($name));
2126: $formula = '' if (! defined($formula));
2127: if (! defined($value)) {
2128: $value = '<font color="'.$bgcolor.'">#</font>';
2129: if ($formula ne '') {
2130: $value = '<i>undefined value</i>';
2131: }
2132: } elsif ($value =~ /^\s*$/ ) {
2133: $value = '<font color="'.$bgcolor.'">#</font>';
2134: } else {
2135: $value = &HTML::Entities::encode($value) if ($value !~/ /);
2136: }
2137: # Make the formula safe for outputting
2138: $formula =~ s/\'/\"/g;
2139: # The formula will be parsed by the browser *twice* before being
2140: # displayed to the user for editing.
2141: $formula = &HTML::Entities::encode(&HTML::Entities::encode($formula));
2142: # Escape newlines so they make it into the edit window
2143: $formula =~ s/\n/\\n/gs;
2144: # Glue everything together
2145: $result .= "<a href=\"javascript:celledit(\'".
2146: $name."','".$formula."');\">".$value."</a>";
2147: return $result;
2148: }
2149:
2150: sub html_uneditable_cell {
2151: my ($cell,$bgcolor) = @_;
2152: my $value = (defined($cell) ? $cell->{'value'} : '');
2153: $value = &HTML::Entities::encode($value) if ($value !~/ /);
2154: return ' '.$value.' ';
2155: }
2156:
2157: sub outsheet_html {
2158: my $self = shift;
2159: my ($r) = @_;
2160: my ($num_uneditable,$realm,$row_type);
2161: my $requester_is_student = ($ENV{'request.role'} =~ /^st\./);
2162: if ($self->{'type'} eq 'assesscalc') {
2163: $num_uneditable = 1;
2164: $realm = 'Assessment';
2165: $row_type = 'Item';
2166: } elsif ($self->{'type'} eq 'studentcalc') {
2167: $num_uneditable = 26;
2168: $realm = 'User';
2169: $row_type = 'Assessment';
2170: } elsif ($self->{'type'} eq 'classcalc') {
2171: $num_uneditable = 26;
2172: $realm = 'Course';
2173: $row_type = 'Student';
2174: } else {
2175: return; # error
2176: }
2177: ####################################
2178: # Print out header table
2179: ####################################
2180: my $num_left = 52-$num_uneditable;
2181: my $tabledata =<<"END";
2182: <table border="2">
2183: <tr>
2184: <th colspan="2" rowspan="2"><font size="+2">$realm</font></th>
2185: <td bgcolor="#FFDDDD" colspan="$num_uneditable">
2186: <b><font size="+1">Import</font></b></td>
2187: <td colspan="$num_left">
2188: <b><font size="+1">Calculations</font></b></td>
2189: </tr><tr>
2190: END
2191: my $label_num = 0;
2192: foreach (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')){
2193: if ($label_num<$num_uneditable) {
2194: $tabledata.='<td bgcolor="#FFDDDD">';
2195: } else {
2196: $tabledata.='<td>';
2197: }
2198: $tabledata.="<b><font size=+1>$_</font></b></td>";
2199: $label_num++;
2200: }
2201: $tabledata.="</tr>\n";
2202: $r->print($tabledata);
2203: ####################################
2204: # Print out template row
2205: ####################################
2206: my ($num_cols_output,$row_html,$rowlabel,@rowdata);
2207:
2208: if (! $requester_is_student) {
2209: ($rowlabel,@rowdata) = $self->get_row('-');
2210: $row_html = '<tr><td>'.$self->format_html_rowlabel($rowlabel).'</td>';
2211: $num_cols_output = 0;
2212: foreach my $cell (@rowdata) {
2213: if ($requester_is_student ||
2214: $num_cols_output++ < $num_uneditable) {
2215: $row_html .= '<td bgcolor="#FFDDDD">';
2216: $row_html .= &html_uneditable_cell($cell,'#FFDDDD');
2217: } else {
2218: $row_html .= '<td bgcolor="#EOFFDD">';
2219: $row_html .= &html_editable_cell($cell,'#E0FFDD');
2220: }
2221: $row_html .= '</td>';
2222: }
2223: $row_html.= "</tr>\n";
2224: $r->print($row_html);
2225: }
2226: ####################################
2227: # Print out summary/export row
2228: ####################################
2229: ($rowlabel,@rowdata) = $self->get_row('0');
2230: $row_html = '<tr><td>'.$self->format_html_rowlabel($rowlabel).'</td>';
2231: $num_cols_output = 0;
2232: foreach my $cell (@rowdata) {
2233: if ($num_cols_output++ < 26 && ! $requester_is_student) {
2234: $row_html .= '<td bgcolor="#CCCCFF">';
2235: $row_html .= &html_editable_cell($cell,'#CCCCFF');
2236: } else {
2237: $row_html .= '<td bgcolor="#DDCCFF">';
2238: $row_html .= &html_uneditable_cell($cell,'#CCCCFF');
2239: }
2240: $row_html .= '</td>';
2241: }
2242: $row_html.= "</tr>\n";
2243: $r->print($row_html);
2244: $r->print('</table>');
2245: ####################################
2246: # Prepare to output rows
2247: ####################################
2248: my @Rows = $self->sort_indicies();
2249: #
2250: # Loop through the rows and output them one at a time
2251: my $rows_output=0;
2252: foreach my $rownum (@Rows) {
2253: my ($rowlabel,@rowdata) = $self->get_row($rownum);
2254: next if ($rowlabel =~ /^\s*$/);
2255: next if (($self->{'type'} eq 'assesscalc') &&
2256: (! $ENV{'form.showall'}) &&
2257: ($rowdata[0]->{'value'} =~ /^\s*$/));
2258: if (! $ENV{'form.showall'} &&
2259: $self->{'type'} =~ /^(studentcalc|classcalc)$/) {
2260: my $row_is_empty = 1;
2261: foreach my $cell (@rowdata) {
2262: if ($cell->{'value'} !~ /^\s*$/) {
2263: $row_is_empty = 0;
2264: last;
2265: }
2266: }
2267: next if ($row_is_empty);
2268: }
2269: #
2270: my $defaultbg='#E0FF';
2271: #
2272: my $row_html ="\n".'<tr><td><b><font size=+1>'.$rownum.
2273: '</font></b></td>';
2274: #
2275: if ($self->{'type'} eq 'classcalc') {
2276: $row_html.='<td>'.$self->format_html_rowlabel($rowlabel).'</td>';
2277: # Output links for each student?
2278: # Nope, that is already done for us in format_html_rowlabel
2279: # (for now)
2280: } elsif ($self->{'type'} eq 'studentcalc') {
2281: my $ufn = (split(/:/,$rowlabel))[5];
2282: $row_html.='<td>'.$self->format_html_rowlabel($rowlabel);
2283: $row_html.= '<br>'.
2284: '<select name="sel_'.$rownum.'" '.
2285: 'onChange="changesheet('.$rownum.')">'.
2286: '<option name="default">Default</option>';
2287: foreach (@{$self->{'othersheets'}}) {
2288: $row_html.='<option name="'.$_.'"';
2289: if ($ufn eq $_) {
2290: $row_html.=' selected';
2291: }
2292: $row_html.='>'.$_.'</option>';
2293: }
2294: $row_html.='</select></td>';
2295: } elsif ($self->{'type'} eq 'assesscalc') {
2296: $row_html.='<td>'.$self->format_html_rowlabel($rowlabel).'</td>';
2297: }
2298: #
2299: my $shown_cells = 0;
2300: foreach my $cell (@rowdata) {
2301: my $value = $cell->{'value'};
2302: my $formula = $cell->{'formula'};
2303: my $cellname = $cell->{'name'};
2304: #
2305: my $bgcolor;
2306: if ($shown_cells && ($shown_cells/5 == int($shown_cells/5))) {
2307: $bgcolor = $defaultbg.'99';
2308: } else {
2309: $bgcolor = $defaultbg.'DD';
2310: }
2311: $bgcolor='#FFDDDD' if ($shown_cells < $num_uneditable);
2312: #
2313: $row_html.='<td bgcolor='.$bgcolor.'>';
2314: if ($requester_is_student || $shown_cells < $num_uneditable) {
2315: $row_html .= &html_uneditable_cell($cell,$bgcolor);
2316: } else {
2317: $row_html .= &html_editable_cell($cell,$bgcolor);
2318: }
2319: $row_html.='</td>';
2320: $shown_cells++;
2321: }
2322: if ($row_html) {
2323: if ($rows_output % 25 == 0) {
2324: $r->print("</table>\n<br>\n");
2325: $r->rflush();
2326: $r->print('<table border=2>'.
2327: '<tr><td> <td>'.$row_type.'</td>'.
2328: '<td>'.
2329: join('</td><td>',
2330: (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
2331: 'abcdefghijklmnopqrstuvwxyz'))).
2332: "</td></tr>\n");
2333: }
2334: $rows_output++;
2335: $r->print($row_html);
2336: }
2337: }
2338: #
2339: $r->print('</table>');
2340: #
2341: # Debugging code (be sure to uncomment errorlog code in safe space):
2342: #
2343: # $r->print("\n<pre>");
2344: # $r->print(&geterrorlog($self));
2345: # $r->print("\n</pre>");
2346: return 1;
2347: }
2348:
2349: ############################################
2350: ## csv output routines ##
2351: ############################################
2352: sub outsheet_csv {
2353: my $self = shift;
2354: my ($r) = @_;
2355: my $csvdata = '';
2356: my @Values;
2357: ####################################
2358: # Prepare to output rows
2359: ####################################
2360: my @Rows = $self->sort_indicies();
2361: #
2362: # Loop through the rows and output them one at a time
2363: my $rows_output=0;
2364: foreach my $rownum (@Rows) {
2365: my ($rowlabel,@rowdata) = $self->get_row($rownum);
2366: next if ($rowlabel =~ /^\s*$/);
2367: push (@Values,$self->format_csv_rowlabel($rowlabel));
2368: foreach my $cell (@rowdata) {
2369: push (@Values,'"'.$cell->{'value'}.'"');
2370: }
2371: $csvdata.= join(',',@Values)."\n";
2372: @Values = ();
2373: }
2374: #
2375: # Write the CSV data to a file and serve up a link
2376: #
2377: my $filename = '/prtspool/'.
2378: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
2379: time.'_'.rand(1000000000).'.csv';
2380: my $file;
2381: unless ($file = Apache::File->new('>'.'/home/httpd'.$filename)) {
2382: $r->log_error("Couldn't open $filename for output $!");
2383: $r->print("Problems occured in writing the csv file. ".
2384: "This error has been logged. ".
2385: "Please alert your LON-CAPA administrator.");
2386: $r->print("<pre>\n".$csvdata."</pre>\n");
2387: return 0;
2388: }
2389: print $file $csvdata;
2390: close($file);
2391: $r->print('<br /><br />'.
2392: '<a href="'.$filename.'">Your CSV spreadsheet.</a>'."\n");
2393: #
2394: return 1;
2395: }
2396:
2397: ############################################
2398: ## Excel output routines ##
2399: ############################################
2400: sub outsheet_recursive_excel {
2401: my $self = shift;
2402: my ($r) = @_;
2403: my $c = $r->connection;
2404: return undef if ($self->{'type'} ne 'classcalc');
2405: my ($workbook,$filename) = $self->create_excel_spreadsheet($r);
2406: return undef if (! defined($workbook));
2407: #
2408: # Create main worksheet
2409: my $main_worksheet = $workbook->addworksheet('main');
2410: #
2411: # Figure out who the students are
2412: my %f=$self->formulas();
2413: my $count = 0;
2414: $r->print(<<END);
2415: <p>
2416: Compiling Excel Workbook with a worksheet for each student.
2417: </p><p>
2418: This operation may take longer than a complete recalculation of the
2419: spreadsheet.
2420: </p><p>
2421: To abort this operation, hit the stop button on your browser.
2422: </p><p>
2423: A link to the spreadsheet will be available at the end of this process.
2424: </p>
2425: <p>
2426: END
2427: $r->rflush();
2428: my $starttime = time;
2429: foreach my $rownum ($self->sort_indicies()) {
2430: $count++;
2431: my ($sname,$sdom) = split(':',$f{'A'.$rownum});
2432: my $student_excel_worksheet=$workbook->addworksheet($sname.'@'.$sdom);
2433: # Create a new spreadsheet
2434: my $studentsheet = &Apache::lonspreadsheet::Spreadsheet->new
2435: ($sname,$sdom,'studentcalc',undef);
2436: # Read in the spreadsheet definition
2437: $studentsheet->update_student_sheet($r,$c);
2438: # Stuff the sheet into excel
2439: $studentsheet->export_sheet_as_excel($student_excel_worksheet);
2440: my $totaltime = int((time - $starttime) / $count * $self->{'maxrow'});
2441: my $timeleft = int((time - $starttime) / $count * ($self->{'maxrow'} - $count));
2442: if ($count % 5 == 0) {
2443: $r->print($count.' students completed.'.
2444: ' Time remaining: '.$timeleft.' sec. '.
2445: ' Estimated total time: '.$totaltime." sec <br />\n");
2446: $r->rflush();
2447: }
2448: if(defined($c) && ($c->aborted())) {
2449: last;
2450: }
2451: }
2452: #
2453: if(! $c->aborted() ) {
2454: $r->print('All students spreadsheets completed!<br />');
2455: $r->rflush();
2456: #
2457: # &export_sheet_as_excel fills $worksheet with the data from $sheet
2458: $self->export_sheet_as_excel($main_worksheet);
2459: #
2460: $workbook->close();
2461: # Okay, the spreadsheet is taken care of, so give the user a link.
2462: $r->print('<br /><br />'.
2463: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
2464: } else {
2465: $workbook->close(); # Not sure how necessary this is.
2466: #unlink('/home/httpd'.$filename); # No need to keep this around?
2467: }
2468: return 1;
2469: }
2470:
2471: sub outsheet_excel {
2472: my $self = shift;
2473: my ($r) = @_;
2474: my ($workbook,$filename) = $self->create_excel_spreadsheet($r);
2475: return undef if (! defined($workbook));
2476: my $sheetname;
2477: if ($self->{'type'} eq 'classcalc') {
2478: $sheetname = 'Main';
2479: } elsif ($self->{'type'} eq 'studentcalc') {
2480: $sheetname = $self->{'uname'}.'@'.$self->{'udom'};
2481: } elsif ($self->{'type'} eq 'assesscalc') {
2482: $sheetname = $self->{'uname'}.'@'.$self->{'udom'}.' assessment';
2483: }
2484: my $worksheet = $workbook->addworksheet($sheetname);
2485: #
2486: # &export_sheet_as_excel fills $worksheet with the data from $sheet
2487: $self->export_sheet_as_excel($worksheet);
2488: #
2489: $workbook->close();
2490: # Okay, the spreadsheet is taken care of, so give the user a link.
2491: $r->print('<br /><br />'.
2492: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
2493: return 1;
2494: }
2495:
2496: sub create_excel_spreadsheet {
2497: my $self = shift;
2498: my ($r) = @_;
2499: my $filename = '/prtspool/'.
2500: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
2501: time.'_'.rand(1000000000).'.xls';
2502: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
2503: if (! defined($workbook)) {
2504: $r->log_error("Error creating excel spreadsheet $filename: $!");
2505: $r->print("Problems creating new Excel file. ".
2506: "This error has been logged. ".
2507: "Please alert your LON-CAPA administrator");
2508: return undef;
2509: }
2510: #
2511: # The excel spreadsheet stores temporary data in files, then put them
2512: # together. If needed we should be able to disable this (memory only).
2513: # The temporary directory must be specified before calling 'addworksheet'.
2514: # File::Temp is used to determine the temporary directory.
2515: $workbook->set_tempdir('/home/httpd/perl/tmp');
2516: #
2517: # Determine the name to give the worksheet
2518: return ($workbook,$filename);
2519: }
2520:
2521: sub export_sheet_as_excel {
2522: my $self = shift;
2523: my $worksheet = shift;
2524: #
2525: my $rows_output = 0;
2526: my $cols_output = 0;
2527: ####################################
2528: # Write an identifying row #
2529: ####################################
2530: my @Headerinfo = ($self->{'coursedesc'});
2531: my $title = $self->gettitle();
2532: $cols_output = 0;
2533: if (defined($title)) {
2534: $worksheet->write($rows_output++,$cols_output++,$title);
2535: }
2536: ####################################
2537: # Write the summary/export row #
2538: ####################################
2539: my ($rowlabel,@rowdata) = &get_row($self,'0');
2540: my $label = &format_excel_rowlabel($self,$rowlabel);
2541: $cols_output = 0;
2542: $worksheet->write($rows_output,$cols_output++,$label);
2543: foreach my $cell (@rowdata) {
2544: $worksheet->write($rows_output,$cols_output++,$cell->{'value'});
2545: }
2546: $rows_output+= 2; # Skip a row, just for fun
2547: ####################################
2548: # Prepare to output rows
2549: ####################################
2550: my @Rows = &sort_indicies($self);
2551: #
2552: # Loop through the rows and output them one at a time
2553: foreach my $rownum (@Rows) {
2554: my ($rowlabel,@rowdata) = &get_row($self,$rownum);
2555: next if ($rowlabel =~ /^[\s]*$/);
2556: $cols_output = 0;
2557: my $label = &format_excel_rowlabel($self,$rowlabel);
2558: if ( ! $ENV{'form.showall'} &&
2559: $self->{'type'} =~ /^(studentcalc|classcalc)$/) {
2560: my $row_is_empty = 1;
2561: foreach my $cell (@rowdata) {
2562: if ($cell->{'value'} !~ /^\s*$/) {
2563: $row_is_empty = 0;
2564: last;
2565: }
2566: }
2567: next if ($row_is_empty);
2568: }
2569: $worksheet->write($rows_output,$cols_output++,$rownum);
2570: $worksheet->write($rows_output,$cols_output++,$label);
2571: if (ref($label)) {
2572: $cols_output = (scalar(@$label));
2573: }
2574: foreach my $cell (@rowdata) {
2575: $worksheet->write($rows_output,$cols_output++,$cell->{'value'});
2576: }
2577: $rows_output++;
2578: }
2579: return;
2580: }
2581:
2582: ############################################
2583: ## XML output routines ##
2584: ############################################
2585: sub outsheet_xml {
2586: my $self = shift;
2587: my ($r) = @_;
2588: ## Someday XML
2589: ## Will be rendered for the user
2590: ## But not on this day
2591: }
2592:
2593: ##
2594: ## Outsheet - calls other outsheet_* functions
2595: ##
2596: sub outsheet {
2597: my $self = shift;
2598: my ($r)=@_;
2599: if (! exists($ENV{'form.output'})) {
2600: $ENV{'form.output'} = 'HTML';
2601: }
2602: if (lc($ENV{'form.output'}) eq 'csv') {
2603: $self->outsheet_csv($r);
2604: } elsif (lc($ENV{'form.output'}) eq 'excel') {
2605: $self->outsheet_excel($r);
2606: } elsif (lc($ENV{'form.output'}) eq 'recursive excel') {
2607: $self->outsheet_recursive_excel($r);
2608: # } elsif (lc($ENV{'form.output'}) eq 'xml' ) {
2609: # $self->outsheet_xml($r);
2610: } else {
2611: $self->outsheet_html($r);
2612: }
2613: }
2614:
2615: #
2616: # othersheets: Returns the list of other spreadsheets available
2617: #
2618: sub othersheets {
2619: my $self = shift;
2620: my ($stype)=@_;
2621: $stype = $self->{'type'} if (! defined($stype));
2622: #
2623: my $cnum = $self->{'cnum'};
2624: my $cdom = $self->{'cdom'};
2625: my $chome = $self->{'chome'};
2626: #
2627: my @alternatives=();
2628: my %results=&Apache::lonnet::dump($stype.'_spreadsheets',$cdom,$cnum);
2629: my ($tmp) = keys(%results);
2630: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
2631: @alternatives = sort (keys(%results));
2632: }
2633: return @alternatives;
2634: }
2635:
2636: #
2637: # Parse a spreadsheet
2638: #
2639: sub parse_sheet {
2640: # $sheetxml is a scalar reference or a scalar
2641: my ($sheetxml) = @_;
2642: if (! ref($sheetxml)) {
2643: my $tmp = $sheetxml;
2644: $sheetxml = \$tmp;
2645: }
2646: my %f;
2647: my $parser=HTML::TokeParser->new($sheetxml);
2648: my $token;
2649: while ($token=$parser->get_token) {
2650: if ($token->[0] eq 'S') {
2651: if ($token->[1] eq 'field') {
2652: $f{$token->[2]->{'col'}.$token->[2]->{'row'}}=
2653: $parser->get_text('/field');
2654: }
2655: if ($token->[1] eq 'template') {
2656: $f{'template_'.$token->[2]->{'col'}}=
2657: $parser->get_text('/template');
2658: }
2659: }
2660: }
2661: return \%f;
2662: }
2663:
2664: sub readsheet {
2665: my $self = shift;
2666: my ($fn)=@_;
2667: #
2668: my $stype = $self->{'type'};
2669: my $cnum = $self->{'cnum'};
2670: my $cdom = $self->{'cdom'};
2671: my $chome = $self->{'chome'};
2672: #
2673: if (! defined($fn)) {
2674: # There is no filename. Look for defaults in course and global, cache
2675: unless ($fn=$defaultsheets{$cnum.'_'.$cdom.'_'.$stype}) {
2676: my %tmphash = &Apache::lonnet::get('environment',
2677: ['spreadsheet_default_'.$stype],
2678: $cdom,$cnum);
2679: my ($tmp) = keys(%tmphash);
2680: if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
2681: $fn = 'default_'.$stype;
2682: } else {
2683: $fn = $tmphash{'spreadsheet_default_'.$stype};
2684: }
2685: unless (($fn) && ($fn!~/^error\:/)) {
2686: $fn='default_'.$stype;
2687: }
2688: $defaultsheets{$cnum.'_'.$cdom.'_'.$stype}=$fn;
2689: }
2690: }
2691: # $fn now has a value
2692: $self->{'filename'} = $fn;
2693: # see if sheet is cached
2694: if (exists($spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn})) {
2695:
2696: my %tmp = split(/___;___/,
2697: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn});
2698: $self->formulas(\%tmp);
2699: } else {
2700: # Not cached, need to read
2701: my %f=();
2702: if ($fn=~/^default\_/) {
2703: my $sheetxml='';
2704: my $fh;
2705: my $dfn=$fn;
2706: $dfn=~s/\_/\./g;
2707: if ($fh=Apache::File->new($includedir.'/'.$dfn)) {
2708: $sheetxml=join('',<$fh>);
2709: } else {
2710: # $sheetxml='<field row="0" col="A">"Error"</field>';
2711: $sheetxml='<field row="0" col="A"></field>';
2712: }
2713: %f=%{&parse_sheet(\$sheetxml)};
2714: } elsif($fn=~/\/*\.spreadsheet$/) {
2715: my $sheetxml=&Apache::lonnet::getfile
2716: (&Apache::lonnet::filelocation('',$fn));
2717: if ($sheetxml == -1) {
2718: $sheetxml='<field row="0" col="A">"Error loading spreadsheet '
2719: .$fn.'"</field>';
2720: }
2721: %f=%{&parse_sheet(\$sheetxml)};
2722: } else {
2723: my %tmphash = &Apache::lonnet::dump($fn,$cdom,$cnum);
2724: my ($tmp) = keys(%tmphash);
2725: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
2726: foreach (keys(%tmphash)) {
2727: $f{$_}=$tmphash{$_};
2728: }
2729: } else {
2730: # Unable to grab the specified spreadsheet,
2731: # so we get the default ones instead.
2732: $fn = 'default_'.$stype;
2733: $self->{'filename'} = $fn;
2734: my $dfn = $fn;
2735: $dfn =~ s/\_/\./g;
2736: my $sheetxml;
2737: if (my $fh=Apache::File->new($includedir.'/'.$dfn)) {
2738: $sheetxml = join('',<$fh>);
2739: } else {
2740: $sheetxml='<field row="0" col="A">'.
2741: '"Unable to load spreadsheet"</field>';
2742: }
2743: %f=%{&parse_sheet(\$sheetxml)};
2744: }
2745: }
2746: # Cache and set
2747: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
2748: $self->formulas(\%f);
2749: }
2750: }
2751:
2752: # ------------------------------------------------------------ Save spreadsheet
2753: sub writesheet {
2754: my $self = shift;
2755: my ($makedef)=@_;
2756: my $cid=$self->{'cid'};
2757: if (&Apache::lonnet::allowed('opa',$cid)) {
2758: my %f=$self->formulas();
2759: my $stype= $self->{'type'};
2760: my $cnum = $self->{'cnum'};
2761: my $cdom = $self->{'cdom'};
2762: my $chome= $self->{'chome'};
2763: my $fn = $self->{'filename'};
2764: # Cache new sheet
2765: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
2766: # Write sheet
2767: foreach (keys(%f)) {
2768: delete($f{$_}) if ($f{$_} eq 'import');
2769: }
2770: my $reply = &Apache::lonnet::put($fn,\%f,$cdom,$cnum);
2771: if ($reply eq 'ok') {
2772: $reply = &Apache::lonnet::put($stype.'_spreadsheets',
2773: {$fn => $ENV{'user.name'}.'@'.$ENV{'user.domain'}},
2774: $cdom,$cnum);
2775: if ($reply eq 'ok') {
2776: if ($makedef) {
2777: $reply = &Apache::lonnet::put('environment',
2778: {'spreadsheet_default_'.$stype => $fn },
2779: $cdom,$cnum);
2780: if ($reply eq 'ok' &&
2781: ($self->{'type'} eq 'studentcalc' ||
2782: $self->{'type'} eq 'assesscalc')) {
2783: # Expire the spreadsheets of the other students.
2784: &Apache::lonnet::expirespread('','','studentcalc','');
2785: }
2786: return $reply;
2787: }
2788: return $reply;
2789: }
2790: return $reply;
2791: }
2792: return $reply;
2793: }
2794: return 'unauthorized';
2795: }
2796:
2797: # ----------------------------------------------- Make a temp copy of the sheet
2798: # "Modified workcopy" - interactive only
2799: #
2800: sub tmpwrite {
2801: my $self = shift;
2802: my $fn=$ENV{'user.name'}.'_'.
2803: $ENV{'user.domain'}.'_spreadsheet_'.$self->{'usymb'}.'_'.
2804: $self->{'filename'};
2805: $fn=~s/\W/\_/g;
2806: $fn=$Apache::lonnet::tmpdir.$fn.'.tmp';
2807: my $fh;
2808: if ($fh=Apache::File->new('>'.$fn)) {
2809: my %f = $self->formulas();
2810: while( my ($cell,$formula) = each(%f)) {
2811: print $fh &Apache::lonnet::escape($cell)."=".&Apache::lonnet::escape($formula)."\n";
2812: }
2813: }
2814: }
2815:
2816:
2817: # ---------------------------------------------------------- Read the temp copy
2818: sub tmpread {
2819: my $self = shift;
2820: my ($nfield,$nform)=@_;
2821: my $fn=$ENV{'user.name'}.'_'.
2822: $ENV{'user.domain'}.'_spreadsheet_'.$self->{'usymb'}.'_'.
2823: $self->{'filename'};
2824: $fn=~s/\W/\_/g;
2825: $fn=$Apache::lonnet::tmpdir.$fn.'.tmp';
2826: my $fh;
2827: my %fo=();
2828: my $countrows=0;
2829: if ($fh=Apache::File->new($fn)) {
2830: while (<$fh>) {
2831: chomp;
2832: my ($cell,$formula) = split(/=/);
2833: $cell = &Apache::lonnet::unescape($cell);
2834: $formula = &Apache::lonnet::unescape($formula);
2835: $fo{$cell} = $formula;
2836: }
2837: }
2838: if ($nform eq 'changesheet') {
2839: $fo{'A'.$nfield}=(split(/__&&&\__/,$fo{'A'.$nfield}))[0];
2840: unless ($ENV{'form.sel_'.$nfield} eq 'Default') {
2841: $fo{'A'.$nfield}.='__&&&__'.$ENV{'form.sel_'.$nfield};
2842: }
2843: } else {
2844: if ($nfield) { $fo{$nfield}=$nform; }
2845: }
2846: $self->formulas(\%fo);
2847: }
2848:
2849: ##################################################################
2850: ## Row label formatting routines ##
2851: ##################################################################
2852: sub format_html_rowlabel {
2853: my $self = shift;
2854: my $rowlabel = shift;
2855: return '' if ($rowlabel eq '');
2856: my ($type,$labeldata) = split(':',$rowlabel,2);
2857: my $result = '';
2858: if ($type eq 'symb') {
2859: my ($symb,$mapid,$resid,$title,$ufn) = split(':',$labeldata);
2860: $ufn = 'default' if (!defined($ufn) || $ufn eq '');
2861: $ufn = &Apache::lonnet::unescape($ufn);
2862: $symb = &Apache::lonnet::unescape($symb);
2863: $title = &Apache::lonnet::unescape($title);
2864: $result = '<a href="/adm/assesscalc?usymb='.$symb.
2865: '&uname='.$self->{'uname'}.'&udom='.$self->{'udom'}.
2866: '&ufn='.$ufn.
2867: '&mapid='.$mapid.'&resid='.$resid.'">'.$title.'</a>';
2868: } elsif ($type eq 'student') {
2869: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
2870: if ($fullname =~ /^\s*$/) {
2871: $fullname = $sname.'@'.$sdom;
2872: }
2873: $result ='<a href="/adm/studentcalc?uname='.$sname.
2874: '&udom='.$sdom.'">';
2875: $result.=$section.' '.$id." ".$fullname.'</a>';
2876: } elsif ($type eq 'parameter') {
2877: $result = $labeldata;
2878: } else {
2879: $result = '<b><font size=+1>'.$rowlabel.'</font></b>';
2880: }
2881: return $result;
2882: }
2883:
2884: sub format_csv_rowlabel {
2885: my $self = shift;
2886: my $rowlabel = shift;
2887: return '' if ($rowlabel eq '');
2888: my ($type,$labeldata) = split(':',$rowlabel,2);
2889: my $result = '';
2890: if ($type eq 'symb') {
2891: my ($symb,$mapid,$resid,$title,$ufn) = split(':',$labeldata);
2892: $ufn = &Apache::lonnet::unescape($ufn);
2893: $symb = &Apache::lonnet::unescape($symb);
2894: $title = &Apache::lonnet::unescape($title);
2895: $result = $title;
2896: } elsif ($type eq 'student') {
2897: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
2898: $result = join('","',($sname,$sdom,$fullname,$section,$id));
2899: } elsif ($type eq 'parameter') {
2900: $labeldata =~ s/<br>/ /g;
2901: $result = $labeldata;
2902: } else {
2903: $result = $rowlabel;
2904: }
2905: return '"'.$result.'"';
2906: }
2907:
2908: sub format_excel_rowlabel {
2909: my $self = shift;
2910: my $rowlabel = shift;
2911: return '' if ($rowlabel eq '');
2912: my ($type,$labeldata) = split(':',$rowlabel,2);
2913: my $result = '';
2914: if ($type eq 'symb') {
2915: my ($symb,$mapid,$resid,$title,$ufn) = split(':',$labeldata);
2916: $ufn = &Apache::lonnet::unescape($ufn);
2917: $symb = &Apache::lonnet::unescape($symb);
2918: $title = &Apache::lonnet::unescape($title);
2919: $result = $title;
2920: } elsif ($type eq 'student') {
2921: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
2922: $section = '' if (! defined($section));
2923: $id = '' if (! defined($id));
2924: my @Data = ($sname,$sdom,$fullname,$section,$id);
2925: $result = \@Data;
2926: } elsif ($type eq 'parameter') {
2927: $labeldata =~ s/<br>/ /g;
2928: $result = $labeldata;
2929: } else {
2930: $result = $rowlabel;
2931: }
2932: return $result;
2933: }
2934:
2935: # ---------------------------------------------- Update rows for course listing
2936: sub updateclasssheet {
2937: my $self = shift;
2938: my $cnum =$self->{'cnum'};
2939: my $cdom =$self->{'cdom'};
2940: my $cid =$self->{'cid'};
2941: my $chome =$self->{'chome'};
2942: #
2943: %Section = ();
2944: #
2945: # Read class list and row labels
2946: my $classlist = &Apache::loncoursedata::get_classlist();
2947: if (! defined($classlist)) {
2948: return 'Could not access course classlist';
2949: }
2950: #
2951: my %currentlist=();
2952: foreach my $student (keys(%$classlist)) {
2953: my ($studentDomain,$studentName,$end,$start,$id,$studentSection,
2954: $fullname,$status) = @{$classlist->{$student}};
2955: $Section{$studentName.':'.$studentDomain} = $studentSection;
2956: if ($ENV{'form.Status'} eq $status || $ENV{'form.Status'} eq 'Any') {
2957: $currentlist{$student}=join(':',('student',$studentName,
2958: $studentDomain,$fullname,
2959: $studentSection,$id));
2960: }
2961: }
2962: #
2963: # Find discrepancies between the course row table and this
2964: #
2965: my %f=$self->formulas();
2966: my $changed=0;
2967: #
2968: $self->{'maxrow'}=0;
2969: my %existing=();
2970: #
2971: # Now obsolete rows
2972: foreach my $rownum ($self->rows()) {
2973: my $cell = 'A'.$rownum;
2974: if ($rownum > $self->{'maxrow'}) {
2975: $self->{'maxrow'}= $rownum;
2976: }
2977: $existing{$f{$cell}}=1;
2978: if (! defined($currentlist{$f{$cell}}) && ($f{$cell}=~/^(~~~|---)/)) {
2979: $f{$cell}='!!! Obsolete';
2980: $changed=1;
2981: }
2982: }
2983: #
2984: # New and unknown keys
2985: foreach my $student (sort keys(%currentlist)) {
2986: next if ($existing{$student});
2987: $changed=1;
2988: $self->{'maxrow'}++;
2989: $f{'A'.$self->{'maxrow'}}=$student;
2990: }
2991: $self->formulas(\%f) if ($changed);
2992: #
2993: $self->rowlabels(\%currentlist);
2994: }
2995:
2996: # ----------------------------------- Update rows for student and assess sheets
2997: sub get_student_rowlabels {
2998: my $self = shift;
2999: #
3000: my %course_db;
3001: #
3002: my $stype = $self->{'type'};
3003: my $uname = $self->{'uname'};
3004: my $udom = $self->{'udom'};
3005: #
3006: $self->{'rowlabel'} = {};
3007: #
3008: my $identifier =$self->{'coursefilename'}.'_'.$stype;
3009: if (exists($rowlabel_cache{$identifier})) {
3010: my %tmp = split(/___;___/,$rowlabel_cache{$identifier});
3011: $self->rowlabels(\%tmp);
3012: } else {
3013: # Get the data and store it in the cache
3014: # Tie hash
3015: tie(%course_db,'GDBM_File',$self->{'coursefilename'}.'.db',
3016: &GDBM_READER(),0640);
3017: if (! tied(%course_db)) {
3018: return 'Could not access course data';
3019: }
3020: #
3021: my %assesslist = ();
3022: foreach ('Feedback','Evaluation','Tutoring','Discussion') {
3023: my $symb = '_'.lc($_);
3024: $assesslist{$symb} = join(':',('symb',$symb,0,0,
3025: &Apache::lonnet::escape($_)));
3026: }
3027: #
3028: while (my ($key,$srcf) = each(%course_db)) {
3029: next if ($key !~ /^src_(\d+)\.(\d+)$/);
3030: my $mapid = $1;
3031: my $resid = $2;
3032: my $id = $mapid.'.'.$resid;
3033: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
3034: my $symb=
3035: &Apache::lonnet::declutter($course_db{'map_id_'.$mapid}).
3036: '___'.$resid.'___'.&Apache::lonnet::declutter($srcf);
3037: $assesslist{$symb} ='symb:'.&Apache::lonnet::escape($symb).':'
3038: .$mapid.':'.$resid.':'.
3039: &Apache::lonnet::escape($course_db{'title_'.$id});
3040: }
3041: }
3042: untie(%course_db);
3043: # Store away the data
3044: $self->{'rowlabel'} = \%assesslist;
3045: $rowlabel_cache{$identifier}=join('___;___',%{$self->{'rowlabel'}});
3046: }
3047:
3048: }
3049:
3050: sub get_assess_rowlabels {
3051: my $self = shift;
3052: #
3053: my %course_db;
3054: #
3055: my $stype = $self->{'type'};
3056: my $uname = $self->{'uname'};
3057: my $udom = $self->{'udom'};
3058: my $usymb = $self->{'usymb'};
3059: #
3060: $self->rowlabels({});
3061: my $identifier =$self->{'coursefilename'}.'_'.$stype.'_'.$usymb;
3062: #
3063: if (exists($rowlabel_cache{$identifier})) {
3064: my %tmp = split('___;___',$rowlabel_cache{$identifier});
3065: $self->rowlabels(\%tmp);
3066: } else {
3067: # Get the data and store it in the cache
3068: # Tie hash
3069: tie(%course_db,'GDBM_File',$self->{'coursefilename'}.'.db',
3070: &GDBM_READER(),0640);
3071: if (! tied(%course_db)) {
3072: return 'Could not access course data';
3073: }
3074: #
3075: my %parameter_labels=
3076: ('timestamp' =>
3077: 'parameter:Timestamp of Last Transaction<br>timestamp',
3078: 'subnumber' =>
3079: 'parameter:Number of Submissions<br>subnumber',
3080: 'tutornumber' =>
3081: 'parameter:Number of Tutor Responses<br>tutornumber',
3082: 'totalpoints' =>
3083: 'parameter:Total Points Granted<br>totalpoints');
3084: while (my ($key,$srcf) = each(%course_db)) {
3085: next if ($key !~ /^src_(\d+)\.(\d+)$/);
3086: my $mapid = $1;
3087: my $resid = $2;
3088: my $id = $mapid.'.'.$resid;
3089: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
3090: # Loop through the metadata for this key
3091: my @Metadata = split(/,/,
3092: &Apache::lonnet::metadata($srcf,'keys'));
3093: foreach my $key (@Metadata) {
3094: next if ($key !~ /^(stores|parameter)_/);
3095: my $display=
3096: &Apache::lonnet::metadata($srcf,$key.'.display');
3097: unless ($display) {
3098: $display.=
3099: &Apache::lonnet::metadata($srcf,$key.'.name');
3100: }
3101: $display.='<br>'.$key;
3102: $parameter_labels{$key}='parameter:'.$display;
3103: } # end of foreach
3104: }
3105: }
3106: untie(%course_db);
3107: # Store away the results
3108: $self->rowlabels(\%parameter_labels);
3109: $rowlabel_cache{$identifier}=join('___;___',%parameter_labels);
3110: }
3111: }
3112:
3113: sub updatestudentassesssheet {
3114: my $self = shift;
3115: if ($self->{'type'} eq 'studentcalc') {
3116: $self->get_student_rowlabels();
3117: } else {
3118: $self->get_assess_rowlabels();
3119: }
3120: # Determine if any of the information has changed
3121: my %f=$self->formulas();
3122: my $changed=0;
3123: $self->{'maxrow'} = 0;
3124: my %existing=();
3125: # Now obsolete rows
3126: foreach my $rownum ($self->rows()) {
3127: my $cell = 'A'.$rownum;
3128: my $formula = $f{$cell};
3129: $self->{'maxrow'} = $rownum if ($rownum > $self->{'maxrow'});
3130: my ($usy,$ufn)=split(/__&&&\__/,$formula);
3131: $existing{$usy}=1;
3132: if ( ! exists($self->{'rowlabel'}->{$usy}) ||
3133: ! defined($self->{'rowlabel'}->{$usy}) ||
3134: ($formula =~ /^(~~~|---)/) ||
3135: ($formula =~ /^\s*$/)) {
3136: $f{$cell}='!!! Obsolete';
3137: $changed=1;
3138: }
3139: }
3140: # New and unknown keys
3141: my %keys_hates_me = $self->rowlabels();
3142: foreach (keys(%keys_hates_me)) {
3143: unless ($existing{$_}) {
3144: $changed=1;
3145: $self->{'maxrow'}++;
3146: $f{'A'.$self->{'maxrow'}}=$_;
3147: }
3148: }
3149: $self->formulas(\%f) if ($changed);
3150: # $self->dump_formulas_to_log();
3151: }
3152:
3153: # ------------------------------------------------ Load data for one assessment
3154: sub loadstudent{
3155: my $self = shift;
3156: my ($r,$c)=@_;
3157: my %constants = ();
3158: my %formulas = $self->formulas();
3159: $cachedassess = $self->{'uname'}.':'.$self->{'udom'};
3160: # Get ALL the student preformance data
3161: my @tmp = &Apache::loncoursedata::get_current_state($self->{'uname'},
3162: $self->{'udom'},
3163: undef,
3164: $self->{'cid'});
3165: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
3166: %cachedstores = @tmp;
3167: }
3168: undef @tmp;
3169: # debugging code
3170: # $self->dump_hash_to_log(\%cachedstores);
3171: #
3172: my @assessdata=();
3173: foreach my $row ($self->rows()) {
3174: my $cell = 'A'.$row;
3175: my $value = $formulas{$cell};
3176: if(defined($c) && ($c->aborted())) {
3177: last;
3178: }
3179: next if ($value =~ /^[!~-]/);
3180: my ($usy,$ufn)=split(/__&&&\__/,$value);
3181: @assessdata=$self->exportsheet($self->{'uname'},
3182: $self->{'udom'},
3183: 'assesscalc',$usy,$ufn,$r);
3184: my $index=0;
3185: foreach my $col ('A','B','C','D','E','F','G','H','I','J','K','L','M',
3186: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
3187: if (defined($assessdata[$index])) {
3188: if ($assessdata[$index]=~/\D/) {
3189: $constants{$col.$row}="'".$assessdata[$index]."'";
3190: } else {
3191: $constants{$col.$row}=$assessdata[$index];
3192: }
3193: $formulas{$col.$row}='import' if ($col ne 'A');
3194: }
3195: $index++;
3196: }
3197: }
3198: $cachedassess='';
3199: undef %cachedstores;
3200: $self->formulas(\%formulas);
3201: $self->constants(\%constants);
3202: }
3203:
3204: # --------------------------------------------------- Load Course Sheet
3205: #
3206: sub loadcourse {
3207: my $self = shift;
3208: my ($r,$c)=@_;
3209: #
3210: my %constants=();
3211: my %formulas=$self->formulas();
3212: #
3213: my $total=0;
3214: foreach ($self->rows()) {
3215: $total++ if ($formulas{'A'.$_} !~ /^[!~-]/);
3216: }
3217:
3218: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,
3219: 'Spreadsheet Status','Spreadsheet Calculation Progress', $total);
3220: &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
3221: 'Processing Course Assessment Data');
3222:
3223: # It would be nice to load in the classlist and assessment info at this
3224: # point, before attacking the student spreadsheets.
3225: foreach my $row ($self->rows()) {
3226: if(defined($c) && ($c->aborted())) {
3227: last;
3228: }
3229: my $cell = 'A'.$row;
3230: next if ($formulas{$cell}=~/^[\!\~\-]/);
3231: my ($sname,$sdom) = split(':',$formulas{$cell});
3232: my $started = time;
3233: my @studentdata=$self->exportsheet($sname,$sdom,'studentcalc',
3234: undef,undef,$r);
3235: undef %userrdatas;
3236: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
3237: 'last student');
3238: my $index=0;
3239: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
3240: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
3241: if (defined($studentdata[$index])) {
3242: my $col=$_;
3243: if ($studentdata[$index]=~/\D/) {
3244: $constants{$col.$row}="'".$studentdata[$index]."'";
3245: } else {
3246: $constants{$col.$row}=$studentdata[$index];
3247: }
3248: unless ($col eq 'A') {
3249: $formulas{$col.$row}='import';
3250: }
3251: }
3252: $index++;
3253: }
3254: }
3255: $self->formulas(\%formulas);
3256: $self->constants(\%constants);
3257: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
3258: }
3259:
3260: # ------------------------------------------------ Load data for one assessment
3261: #
3262: sub loadassessment {
3263: my $self = shift;
3264: my ($r,$c)=@_;
3265:
3266: my $uhome = $self->{'uhome'};
3267: my $uname = $self->{'uname'};
3268: my $udom = $self->{'udom'};
3269: my $symb = $self->{'usymb'};
3270: my $cid = $self->{'cid'};
3271: my $cnum = $self->{'cnum'};
3272: my $cdom = $self->{'cdom'};
3273: my $chome = $self->{'chome'};
3274: my $csec = $self->{'csec'};
3275:
3276: my $namespace;
3277: unless ($namespace=$cid) { return ''; }
3278: # Get stored values
3279: my %returnhash=();
3280: if ($cachedassess eq $uname.':'.$udom) {
3281: #
3282: # get data out of the dumped stores
3283: #
3284: if (exists($cachedstores{$symb})) {
3285: %returnhash = %{$cachedstores{$symb}};
3286: } else {
3287: %returnhash = ();
3288: }
3289: } else {
3290: #
3291: # restore individual
3292: #
3293: %returnhash = &Apache::lonnet::restore($symb,$namespace,$udom,$uname);
3294: }
3295: #
3296: # returnhash now has all stores for this resource
3297: # convert all "_" to "." to be able to use libraries, multiparts, etc
3298: #
3299: # This is dumb. It is also necessary :(
3300: my @oldkeys=keys %returnhash;
3301: #
3302: foreach my $name (@oldkeys) {
3303: my $value=$returnhash{$name};
3304: delete $returnhash{$name};
3305: $name=~s/\_/\./g;
3306: $returnhash{$name}=$value;
3307: }
3308: # initialize coursedata and userdata for this user
3309: undef %courseopt;
3310: undef %useropt;
3311:
3312: my $userprefix=$uname.'_'.$udom.'_';
3313:
3314: unless ($uhome eq 'no_host') {
3315: # Get coursedata
3316: unless ((time-$courserdatas{$cid.'.last_cache'})<240) {
3317: my %Tmp = &Apache::lonnet::dump('resourcedata',$cdom,$cnum);
3318: $courserdatas{$cid}=\%Tmp;
3319: $courserdatas{$cid.'.last_cache'}=time;
3320: }
3321: while (my ($name,$value) = each(%{$courserdatas{$cid}})) {
3322: $courseopt{$userprefix.$name}=$value;
3323: }
3324: # Get userdata (if present)
3325: unless ((time-$userrdatas{$uname.'@'.$udom.'.last_cache'})<240) {
3326: my %Tmp = &Apache::lonnet::dump('resourcedata',$udom,$uname);
3327: $userrdatas{$cid} = \%Tmp;
3328: # Most of the time the user does not have a 'resourcedata.db'
3329: # file. We need to cache that we got nothing instead of bothering
3330: # with requesting it every time.
3331: $userrdatas{$uname.'@'.$udom.'.last_cache'}=time;
3332: }
3333: while (my ($name,$value) = each(%{$userrdatas{$cid}})) {
3334: $useropt{$userprefix.$name}=$value;
3335: }
3336: }
3337: # now courseopt, useropt initialized for this user and course
3338: # (used by parmval)
3339: #
3340: # Load keys for this assessment only
3341: #
3342: my %thisassess=();
3343: my ($symap,$syid,$srcf)=split(/\_\_\_/,$symb);
3344: foreach (split(/\,/,&Apache::lonnet::metadata($srcf,'keys'))) {
3345: $thisassess{$_}=1;
3346: }
3347: #
3348: # Load parameters
3349: #
3350: my %c=();
3351: if (tie(%parmhash,'GDBM_File',
3352: $self->{'coursefilename'}.'_parms.db',&GDBM_READER(),0640)) {
3353: my %f=$self->formulas();
3354: foreach my $row ($self->rows()) {
3355: my $cell = 'A'.$row;
3356: my $formula = $self->formula($cell);
3357: next if ($formula =~/^[\!\~\-]/);
3358: if ($formula =~ /^parameter/) {
3359: if (defined($thisassess{$formula})) {
3360: my $val = &parmval($formula,$symb,$uname,$udom,$csec);
3361: $c{$cell} = $val;
3362: $c{$formula} = $val;
3363: }
3364: } else {
3365: my $ckey=$formula;
3366: $formula=~s/^stores\_/resource\./;
3367: $formula=~s/\_/\./g;
3368: $c{$cell}=$returnhash{$formula};
3369: $c{$ckey}=$returnhash{$formula};
3370: }
3371: }
3372: untie(%parmhash);
3373: }
3374: $self->constants(\%c);
3375: }
3376:
3377:
3378: # =============================================== Update information in a sheet
3379: #
3380: # Add new users or assessments, etc.
3381: #
3382: sub updatesheet {
3383: my $self = shift;
3384: if ($self->{'type'} eq 'classcalc') {
3385: return $self->updateclasssheet();
3386: } else {
3387: return $self->updatestudentassesssheet();
3388: }
3389: }
3390:
3391: # =================================================== Load the rows for a sheet
3392: #
3393: # Import the data for rows
3394: #
3395: sub loadrows {
3396: my $self = shift;
3397: my ($r)=@_;
3398: my $c = $r->connection;
3399: if ($self->{'type'} eq 'classcalc') {
3400: $self->loadcourse($r,$c);
3401: } elsif ($self->{'type'} eq 'studentcalc') {
3402: $self->loadstudent($r,$c);
3403: } else {
3404: $self->loadassessment($r,$c);
3405: }
3406: }
3407:
3408: # ============================================================== Export handler
3409: # exportsheet
3410: # returns the export row for a spreadsheet.
3411: #
3412: sub exportsheet {
3413: my $self = shift;
3414: my ($uname,$udom,$stype,$usymb,$fn,$r)=@_;
3415: my $flag = 0;
3416: $uname = $uname || $self->{'uname'};
3417: $udom = $udom || $self->{'udom'};
3418: $stype = $stype || $self->{'type'};
3419: my @exportarr=();
3420: # This handles the assessment sheets for '_feedback', etc
3421: if (defined($usymb) && ($usymb=~/^\_(\w+)/) &&
3422: (!defined($fn) || $fn eq '')) {
3423: $fn='default_'.$1;
3424: }
3425: #
3426: # Check if cached
3427: #
3428: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3429: my $found='';
3430: if ($Apache::lonspreadsheet::oldsheets{$key}) {
3431: foreach (split(/___&\___/,$Apache::lonspreadsheet::oldsheets{$key})) {
3432: my ($name,$value)=split(/___=___/,$_);
3433: if ($name eq $fn) {
3434: $found=$value;
3435: }
3436: }
3437: }
3438: unless ($found) {
3439: &cachedssheets($self,$uname,$udom);
3440: if ($Apache::lonspreadsheet::oldsheets{$key}) {
3441: foreach (split(/___&\___/,$Apache::lonspreadsheet::oldsheets{$key})) {
3442: my ($name,$value)=split(/___=___/,$_);
3443: if ($name eq $fn) {
3444: $found=$value;
3445: }
3446: }
3447: }
3448: }
3449: #
3450: # Check if still valid
3451: #
3452: if ($found) {
3453: if (&forcedrecalc($uname,$udom,$stype,$usymb)) {
3454: $found='';
3455: }
3456: }
3457: if ($found) {
3458: #
3459: # Return what was cached
3460: #
3461: @exportarr=split(/___;___/,$found);
3462: return @exportarr;
3463: }
3464: #
3465: # Not cached
3466: #
3467: my $newsheet = Apache::lonspreadsheet::Spreadsheet->new($uname,$udom,
3468: $stype,$usymb);
3469: $newsheet->readsheet($fn);
3470: $newsheet->updatesheet();
3471: $newsheet->loadrows($r);
3472: $newsheet->calcsheet();
3473: @exportarr=$newsheet->exportdata();
3474: ##
3475: ## Store now
3476: ##
3477: #
3478: # load in the old value
3479: #
3480: my %currentlystored=();
3481: if ($stype eq 'studentcalc') {
3482: my @tmp = &Apache::lonnet::get('nohist_calculatedsheets',
3483: [$key],
3484: $self->{'cdom'},$self->{'cnum'});
3485: if ($tmp[0]!~/^error/) {
3486: # We only got one key, so we will access it directly.
3487: foreach (split('___&___',$tmp[1])) {
3488: my ($key,$value) = split('___=___',$_);
3489: $key = '' if (! defined($key));
3490: $currentlystored{$key} = $value;
3491: }
3492: }
3493: } else {
3494: my @tmp = &Apache::lonnet::get('nohist_calculatedsheets_'.
3495: $self->{'cid'},[$key],
3496: $self->{'udom'},$self->{'uname'});
3497: if ($tmp[0]!~/^error/) {
3498: # We only got one key, so we will access it directly.
3499: foreach (split('___&___',$tmp[1])) {
3500: my ($key,$value) = split('___=___',$_);
3501: $key = '' if (! defined($key));
3502: $currentlystored{$key} = $value;
3503: }
3504: }
3505: }
3506: #
3507: # Add the new line
3508: #
3509: $currentlystored{$fn}=join('___;___',@exportarr);
3510: #
3511: # Stick everything back together
3512: #
3513: my $newstore='';
3514: foreach (keys(%currentlystored)) {
3515: if ($newstore) { $newstore.='___&___'; }
3516: $newstore.=$_.'___=___'.$currentlystored{$_};
3517: }
3518: my $now=time;
3519: #
3520: # Store away the new value
3521: #
3522: my $timekey = $key.'.time';
3523: if ($stype eq 'studentcalc') {
3524: my $result = &Apache::lonnet::put('nohist_calculatedsheets',
3525: { $key => $newstore,
3526: $timekey => $now },
3527: $self->{'cdom'},
3528: $self->{'cnum'});
3529: } else {
3530: my $result = &Apache::lonnet::put('nohist_calculatedsheets_'.$self->{'cid'},
3531: { $key => $newstore,
3532: $timekey => $now },
3533: $self->{'udom'},
3534: $self->{'uname'});
3535: }
3536: return @exportarr;
3537: }
3538:
3539: 1;
3540:
3541: __END__
3542:
3543:
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