1: #
2: # $Id: lonspreadsheet.pm,v 1.174 2003/03/07 04:20:20 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 $nothing = "''";
187: if ($ENV{'browser.type'} eq 'explorer') {
188: $nothing = "'javascript:void(0);'";
189: }
190:
191: if ($ENV{'request.role'} !~ /^st\./) {
192: $r->print(<<ENDSCRIPT);
193: <script language="JavaScript">
194:
195: var editwin;
196:
197: function celledit(cellname,cellformula) {
198: var edit_text = '';
199: // cellformula may contain less-than and greater-than symbols, so
200: // we need to escape them?
201: edit_text +='<html><head><title>Cell Edit Window</title></head><body>';
202: edit_text += '<form name="editwinform">';
203: edit_text += '<center><h3>Cell '+cellname+'</h3>';
204: edit_text += '<textarea name="newformula" cols="40" rows="6"';
205: edit_text += ' wrap="off" >'+cellformula+'</textarea>';
206: edit_text += '</br>';
207: edit_text += '<input type="button" name="accept" value="Accept"';
208: edit_text += ' onClick=\\\'javascript:';
209: edit_text += 'opener.document.sheet.unewfield.value=';
210: edit_text += '"'+cellname+'";';
211: edit_text += 'opener.document.sheet.unewformula.value=';
212: edit_text += 'document.editwinform.newformula.value;';
213: edit_text += 'opener.document.sheet.submit();';
214: edit_text += 'self.close()\\\' />';
215: edit_text += ' ';
216: edit_text += '<input type="button" name="abort" ';
217: edit_text += 'value="Discard Changes"';
218: edit_text += ' onClick="javascript:self.close()" />';
219: edit_text += '</center></body></html>';
220:
221: if (editwin != null && !(editwin.closed) ) {
222: editwin.close();
223: }
224:
225: editwin = window.open($nothing,'CellEditWin','height=200,width=350,scrollbars=no,resizeable=yes,alwaysRaised=yes,dependent=yes',true);
226: editwin.document.write(edit_text);
227: }
228:
229: function changesheet(cn) {
230: document.sheet.unewfield.value=cn;
231: document.sheet.unewformula.value='changesheet';
232: document.sheet.submit();
233: }
234:
235: function insertrow(cn) {
236: document.sheet.unewfield.value='insertrow';
237: document.sheet.unewformula.value=cn;
238: document.sheet.submit();
239: }
240:
241: </script>
242: ENDSCRIPT
243: }
244: $r->print('</head>'.&Apache::loncommon::bodytag('Grades Spreadsheet').
245: '<form action="'.$r->uri.'" name="sheet" method="post">');
246: $r->print(&hiddenfield('uname',$ENV{'form.uname'}).
247: &hiddenfield('udom',$ENV{'form.udom'}).
248: &hiddenfield('usymb',$ENV{'form.usymb'}).
249: &hiddenfield('unewfield','').
250: &hiddenfield('unewformula',''));
251: $r->rflush();
252: #
253: # Full recalc?
254: #
255: # Read new sheet or modified worksheet
256: my $sheet=Apache::lonspreadsheet::Spreadsheet->new($aname,$adom,$sheettype,$ENV{'form.usymb'});
257: if ($ENV{'form.forcerecalc'}) {
258: $r->print('<h4>Completely Recalculating Sheet ...</h4>');
259: $sheet->complete_recalc();
260: }
261: #
262: # Global directory configs
263: #
264: $sheet->includedir($r->dir_config('lonIncludes'));
265: #
266: # Check user permissions
267: if (($sheet->{'type'} eq 'classcalc' ) ||
268: ($sheet->{'uname'} ne $ENV{'user.name'} ) ||
269: ($sheet->{'udom'} ne $ENV{'user.domain'})) {
270: unless (&Apache::lonnet::allowed('vgr',$sheet->{'cid'})) {
271: $r->print('<h1>Access Permission Denied</h1>'.
272: '</form></body></html>');
273: return OK;
274: }
275: }
276: # Print out user information
277: $r->print('<h2>'.$sheet->{'coursedesc'}.'</h2>');
278: if ($sheet->{'type'} ne 'classcalc') {
279: $r->print('<h2>'.$sheet->gettitle().'</h2><p>');
280: }
281: if ($sheet->{'type'} eq 'assesscalc') {
282: $r->print('<b>User:</b> '.$sheet->{'uname'}.
283: '<br /><b>Domain:</b> '.$sheet->{'udom'}.'<br />');
284: }
285: if ($sheet->{'type'} eq 'studentcalc' ||
286: $sheet->{'type'} eq 'assesscalc') {
287: $r->print('<b>Section/Group:</b>'.$sheet->{'csec'}.'</p>');
288: }
289: #
290: # If a new formula had been entered, go from work copy
291: if ($ENV{'form.unewfield'}) {
292: $r->print('<h2>Modified Workcopy</h2>');
293: #$ENV{'form.unewformula'}=~s/\'/\"/g;
294: $r->print('<p>Cell '.$ENV{'form.unewfield'}.' = <pre>');
295: $r->print(&HTML::Entities::encode($ENV{'form.unewformula'}).
296: '</pre></p>');
297: $sheet->{'filename'} = $ENV{'form.ufn'};
298: $sheet->tmpread($ENV{'form.unewfield'},$ENV{'form.unewformula'});
299: } elsif ($ENV{'form.saveas'}) {
300: $sheet->{'filename'} = $ENV{'form.ufn'};
301: $sheet->tmpread();
302: } else {
303: $sheet->readsheet($ENV{'form.ufn'});
304: }
305: # Additional options
306: if ($sheet->{'type'} eq 'assesscalc') {
307: $r->print('<p><font size=+2>'.
308: '<a href="/adm/studentcalc?'.
309: 'uname='.$sheet->{'uname'}.
310: '&udom='.$sheet->{'udom'}.'">'.
311: 'Level up: Student Sheet</a></font></p>');
312: }
313: if (($sheet->{'type'} eq 'studentcalc') &&
314: (&Apache::lonnet::allowed('vgr',$sheet->{'cid'}))) {
315: $r->print ('<p><font size=+2><a href="/adm/classcalc">'.
316: 'Level up: Course Sheet</a></font></p>');
317: }
318: # Recalc button
319: $r->print('<br />'.
320: '<input type="submit" name="forcerecalc" '.
321: 'value="Completely Recalculate Sheet"></p>');
322: # Save dialog
323: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
324: my $fname=$ENV{'form.ufn'};
325: $fname=~s/\_[^\_]+$//;
326: if ($fname eq 'default') { $fname='course_default'; }
327: $r->print('<input type=submit name=saveas value="Save as ...">'.
328: '<input type=text size=20 name=newfn value="'.$fname.'">'.
329: 'make default: <input type=checkbox name="makedefufn"><p>');
330: }
331: $r->print(&hiddenfield('ufn',$sheet->{'filename'}));
332: # Load dialog
333: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
334: $r->print('<p><input type=submit name=load value="Load ...">'.
335: '<select name="loadthissheet">'.
336: '<option name="default">Default</option>');
337: foreach ($sheet->othersheets()) {
338: $r->print('<option name="'.$_.'"');
339: if ($ENV{'form.ufn'} eq $_) {
340: $r->print(' selected');
341: }
342: $r->print('>'.$_.'</option>');
343: }
344: $r->print('</select><p>');
345: if ($sheet->{'type'} eq 'studentcalc') {
346: $sheet->setothersheets($sheet->othersheets('assesscalc'));
347: }
348: }
349: #
350: # Set up caching mechanisms
351: #
352: &Apache::lonspreadsheet::Spreadsheet::load_spreadsheet_expirationdates();
353: # Clear out old caches if we have not seen this class before.
354: if (exists($oldsheets{'course'}) &&
355: $oldsheets{'course'} ne $sheet->{'cid'}) {
356: undef %oldsheets;
357: undef %loadedcaches;
358: }
359: $oldsheets{'course'} = $sheet->{'cid'};
360: #
361: if ($sheet->{'type'} eq 'classcalc') {
362: $r->print("Loading previously calculated student sheets ...\n");
363: $r->rflush();
364: &Apache::lonspreadsheet::Spreadsheet::cachedcsheets();
365: } elsif ($sheet->{'type'} eq 'studentcalc') {
366: $r->print("Loading previously calculated assessment sheets ...\n");
367: $r->rflush();
368: $sheet->cachedssheets();
369: }
370: # Update sheet, load rows
371: $r->print("Loaded sheet(s), updating rows ...<br>\n");
372: $r->rflush();
373: #
374: $sheet->updatesheet();
375: $r->print("Updated rows, loading row data ...\n");
376: $r->rflush();
377: #
378: $sheet->loadrows($r);
379: $r->print("Loaded row data, calculating sheet ...<br>\n");
380: $r->rflush();
381: #
382: my $calcoutput=$sheet->calcsheet();
383: $r->print('<h3><font color=red>'.$calcoutput.'</h3></font>');
384: # See if something to save
385: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
386: my $fname='';
387: if ($ENV{'form.saveas'} && ($fname=$ENV{'form.newfn'})) {
388: $fname=~s/\W/\_/g;
389: if ($fname eq 'default') { $fname='course_default'; }
390: $fname.='_'.$sheet->{'type'};
391: $sheet->{'filename'} = $fname;
392: $ENV{'form.ufn'}=$fname;
393: $r->print('<p>Saving spreadsheet: '.
394: $sheet->writesheet($ENV{'form.makedefufn'}).
395: '<p>');
396: }
397: }
398: #
399: # Write the modified worksheet
400: $r->print('<b>Current sheet:</b> '.$sheet->{'filename'}.'</p>');
401: $sheet->tmpwrite();
402: if ($sheet->{'type'} eq 'assesscalc') {
403: $r->print('<p>Show rows with empty A column: ');
404: } else {
405: $r->print('<p>Show empty rows: ');
406: }
407: #
408: $r->print(&hiddenfield('userselhidden','true').
409: '<input type="checkbox" name="showall" onClick="submit()"');
410: #
411: if ($ENV{'form.showall'}) {
412: $r->print(' checked');
413: } else {
414: unless ($ENV{'form.userselhidden'}) {
415: unless
416: ($ENV{'course.'.$sheet->{'cid'}.'.hideemptyrows'} eq 'yes') {
417: $r->print(' checked');
418: $ENV{'form.showall'}=1;
419: }
420: }
421: }
422: $r->print('>');
423: #
424: # output format select box
425: $r->print(' Output as <select name="output" size="1" onChange="submit()">'.
426: "\n");
427: foreach my $mode (qw/HTML CSV Excel/) {
428: $r->print('<option value="'.$mode.'"');
429: if ($ENV{'form.output'} eq $mode) {
430: $r->print(' selected ');
431: }
432: $r->print('>'.$mode.'</option>'."\n");
433: }
434: #
435: # Mulit-sheet excel takes too long and does not work at all for large
436: # classes. Future inclusion of this option may be possible with the
437: # Spreadsheet::WriteExcel::Big and speed improvements.
438: #
439: # if ($sheet->{'type'} eq 'classcalc') {
440: # $r->print('<option value="recursive excel"');
441: # if ($ENV{'form.output'} eq 'recursive excel') {
442: # $r->print(' selected ');
443: # }
444: # $r->print(">Multi-Sheet Excel</option>\n");
445: # }
446: $r->print("</select>\n");
447: #
448: if ($sheet->{'type'} eq 'classcalc') {
449: $r->print(' Student Status: '.
450: &Apache::lonhtmlcommon::StatusOptions
451: ($ENV{'form.Status'},'sheet'));
452: }
453: #
454: # Buttons to insert rows
455: # $r->print(<<ENDINSERTBUTTONS);
456: #<br>
457: #<input type='button' onClick='insertrow("top");'
458: #value='Insert Row Top'>
459: #<input type='button' onClick='insertrow("bottom");'
460: #value='Insert Row Bottom'><br>
461: #ENDINSERTBUTTONS
462: # Print out sheet
463: $sheet->outsheet($r);
464: $r->print('</form></body></html>');
465: # Done
466: return OK;
467: }
468:
469: 1;
470:
471: #############################################################
472: #############################################################
473: #############################################################
474:
475: package Apache::lonspreadsheet::Spreadsheet;
476:
477: use strict;
478: use Apache::Constants qw(:common :http);
479: use Apache::lonnet;
480: use Apache::loncoursedata;
481: use Apache::File();
482: use Safe;
483: use Safe::Hole;
484: use Opcode;
485: use GDBM_File;
486: use HTML::Entities();
487: use HTML::TokeParser;
488: use Spreadsheet::WriteExcel;
489: use Time::HiRes;
490:
491: #
492: # These global hashes are dependent on user, course and resource,
493: # and need to be initialized every time when a sheet is calculated
494: #
495: my %courseopt;
496: my %useropt;
497: my %parmhash;
498:
499: #
500: # Caches for coursewide information
501: #
502: my %Section;
503:
504: #
505: # Caches for previously calculated spreadsheets
506: #
507: my %expiredates;
508:
509: #
510: # Cache for stores of an individual user
511: #
512: my $cachedassess;
513: my %cachedstores;
514:
515: #
516: # Some hashes for stats on timing and performance
517: #
518: my %starttimes;
519: my %usedtimes;
520: my %numbertimes;
521:
522: #
523: # Directories
524: #
525: my $includedir;
526:
527: sub includedir {
528: my $self = shift;
529: $includedir = shift;
530: }
531:
532: my %spreadsheets;
533: #my %loadedcaches;
534: my %courserdatas;
535: my %userrdatas;
536: my %defaultsheets;
537: my %rowlabel_cache;
538: #my %oldsheets;
539:
540: sub complete_recalc {
541: my $self = shift;
542: undef %spreadsheets;
543: undef %courserdatas;
544: undef %userrdatas;
545: undef %defaultsheets;
546: undef %rowlabel_cache;
547: }
548:
549: sub get_sheet {
550: my $self = shift;
551: my $sheet_id = shift;
552: my $formulas;
553: # if we already have the file loaded and parsed, return the formulas
554: if (exists($self->{'sheets'}->{$sheet_id})) {
555: $formulas = $self->{'sheets'}->{$sheet_id};
556: $self->debug('retrieved '.$sheet_id);
557: } else {
558: # load the file
559: # set $error and return undef if there is an error loading
560: # parse it
561: # set $error and return undef if there is an error parsing
562: }
563: return $formulas;
564: }
565:
566: #
567: # Load previously cached student spreadsheets for this course
568: #
569: sub load_spreadsheet_expirationdates {
570: undef %expiredates;
571: my $cid=$ENV{'request.course.id'};
572: my @tmp = &Apache::lonnet::dump('nohist_expirationdates',
573: $ENV{'course.'.$cid.'.domain'},
574: $ENV{'course.'.$cid.'.num'});
575: if (lc($tmp[0]) !~ /^error/){
576: %expiredates = @tmp;
577: }
578: }
579:
580: # ===================================================== Calculated sheets cache
581: #
582: # Load previously cached student spreadsheets for this course
583: #
584: sub cachedcsheets {
585: my $cid=$ENV{'request.course.id'};
586: my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets',
587: $ENV{'course.'.$cid.'.domain'},
588: $ENV{'course.'.$cid.'.num'});
589: if ($tmp[0] !~ /^error/) {
590: my %StupidTempHash = @tmp;
591: while (my ($key,$value) = each %StupidTempHash) {
592: $Apache::lonspreadsheet::oldsheets{$key} = $value;
593: }
594: }
595: }
596:
597: #
598: # Load previously cached assessment spreadsheets for this student
599: #
600: sub cachedssheets {
601: my $self = shift;
602: my ($uname,$udom) = @_;
603: $uname = $uname || $self->{'uname'};
604: $udom = $udom || $self->{'udom'};
605: if (! exists($Apache::lonspreadsheet::loadedcaches{$uname.'_'.$udom})) {
606: my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets_'.
607: $ENV{'request.course.id'},
608: $self->{'udom'},
609: $self->{'uname'});
610: if ($tmp[0] !~ /^error/) {
611: my %TempHash = @tmp;
612: my $count = 0;
613: while (my ($key,$value) = each %TempHash) {
614: $Apache::lonspreadsheet::oldsheets{$key} = $value;
615: $count++;
616: }
617: $Apache::lonspreadsheet::loadedcaches{$self->{'uname'}.'_'.$self->{'udom'}}=1;
618: }
619: }
620: }
621:
622: # ======================================================= Forced recalculation?
623: sub checkthis {
624: my ($keyname,$time)=@_;
625: if (! exists($expiredates{$keyname})) {
626: return 0;
627: } else {
628: return ($time<$expiredates{$keyname});
629: }
630: }
631:
632: sub forcedrecalc {
633: my ($uname,$udom,$stype,$usymb)=@_;
634: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
635: my $time=$Apache::lonspreadsheet::oldsheets{$key.'.time'};
636: if ($ENV{'form.forcerecalc'}) { return 1; }
637: unless ($time) { return 1; }
638: if ($stype eq 'assesscalc') {
639: my $map=(split(/___/,$usymb))[0];
640: if (&checkthis('::assesscalc:',$time) ||
641: &checkthis('::assesscalc:'.$map,$time) ||
642: &checkthis('::assesscalc:'.$usymb,$time) ||
643: &checkthis($uname.':'.$udom.':assesscalc:',$time) ||
644: &checkthis($uname.':'.$udom.':assesscalc:'.$map,$time) ||
645: &checkthis($uname.':'.$udom.':assesscalc:'.$usymb,$time)) {
646: return 1;
647: }
648: } else {
649: if (&checkthis('::studentcalc:',$time) ||
650: &checkthis($uname.':'.$udom.':studentcalc:',$time)) {
651: return 1;
652: }
653: }
654: return 0;
655: }
656:
657:
658: ##################################################
659: ##################################################
660:
661: =pod
662:
663: =item &parmval()
664:
665: Determine the value of a parameter.
666:
667: Inputs: $what, the parameter needed, $symb, $uname, $udom, $csec
668:
669: Returns: The value of a parameter, or '' if none.
670:
671: This function cascades through the possible levels searching for a value for
672: a parameter. The levels are checked in the following order:
673: user, course (at section level and course level), map, and lonnet::metadata.
674: This function uses %parmhash, which must be tied prior to calling it.
675: This function also requires %courseopt and %useropt to be initialized for
676: this user and course.
677:
678: =cut
679:
680: ##################################################
681: ##################################################
682: sub parmval {
683: my ($what,$symb,$uname,$udom,$csec)=@_;
684: return '' if (!$symb);
685: #
686: my $cid = $ENV{'request.course.id'};
687: my $result='';
688: #
689: my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);
690: # Cascading lookup scheme
691: my $rwhat=$what;
692: $what =~ s/^parameter\_//;
693: $what =~ s/\_([^\_]+)$/\.$1/;
694: #
695: my $symbparm = $symb.'.'.$what;
696: my $mapparm = $mapname.'___(all).'.$what;
697: my $usercourseprefix = $uname.'_'.$udom.'_'.$cid;
698: #
699: my $seclevel = $usercourseprefix.'.['.$csec.'].'.$what;
700: my $seclevelr = $usercourseprefix.'.['.$csec.'].'.$symbparm;
701: my $seclevelm = $usercourseprefix.'.['.$csec.'].'.$mapparm;
702: #
703: my $courselevel = $usercourseprefix.'.'.$what;
704: my $courselevelr = $usercourseprefix.'.'.$symbparm;
705: my $courselevelm = $usercourseprefix.'.'.$mapparm;
706: # fourth, check user
707: if (defined($uname)) {
708: return $useropt{$courselevelr} if (defined($useropt{$courselevelr}));
709: return $useropt{$courselevelm} if (defined($useropt{$courselevelm}));
710: return $useropt{$courselevel} if (defined($useropt{$courselevel}));
711: }
712: # third, check course
713: if (defined($csec)) {
714: return $courseopt{$seclevelr} if (defined($courseopt{$seclevelr}));
715: return $courseopt{$seclevelm} if (defined($courseopt{$seclevelm}));
716: return $courseopt{$seclevel} if (defined($courseopt{$seclevel}));
717: }
718: #
719: return $courseopt{$courselevelr} if (defined($courseopt{$courselevelr}));
720: return $courseopt{$courselevelm} if (defined($courseopt{$courselevelm}));
721: return $courseopt{$courselevel} if (defined($courseopt{$courselevel}));
722: # second, check map parms
723: my $thisparm = $parmhash{$symbparm};
724: return $thisparm if (defined($thisparm));
725:
726: # first, check default
727: $thisparm = &Apache::lonnet::metadata($fn,$rwhat.'.default');
728: return $thisparm if (defined($thisparm));
729:
730: #Cascade Up
731: my $space=$what;
732: $space=~s/\.\w+$//;
733: if ($space ne '0') {
734: my @parts=split(/_/,$space);
735: my $id=pop(@parts);
736: my $part=join('_',@parts);
737: if ($part eq '') { $part='0'; }
738: my $newwhat=$rwhat;
739: $newwhat=~s/\Q$space\E/$part/;
740: my $partgeneral=&parmval($newwhat,$symb,$uname,$udom,$csec);
741: if (defined($partgeneral)) { return $partgeneral; }
742: }
743:
744: #nothing defined
745: return '';
746: }
747:
748: #
749: # new: Make a new spreadsheet
750: #
751: sub new {
752: my $this = shift;
753: my $class = ref($this) || $this;
754: #
755: my ($uname,$udom,$stype,$usymb)=@_;
756: #
757: my $self = {
758: uname => $uname,
759: udom => $udom,
760: type => $stype,
761: usymb => $usymb,
762: errorlog => '',
763: maxrow => '',
764: mapid => $ENV{'form.mapid'},
765: resid => $ENV{'form.resid'},
766: cid => $ENV{'request.course.id'},
767: csec => $Section{$uname.':'.$udom},
768: cnum => $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
769: cdom => $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
770: chome => $ENV{'course.'.$ENV{'request.course.id'}.'.home'},
771: coursefilename => $ENV{'request.course.fn'},
772: coursedesc => $ENV{'course.'.$ENV{'request.course.id'}.'.description'},
773: rows => [],
774: template_cells => [],
775: };
776: $self->{'uhome'} = &Apache::lonnet::homeserver($uname,$udom);
777: #
778: #
779: $self->{'formulas'} = {};
780: $self->{'constants'} = {};
781: $self->{'othersheets'} = [];
782: $self->{'rowlabel'} = {};
783: #
784: #
785: $self->{'safe'} = &initsheet($self->{'type'});
786: $self->{'root'} = $self->{'safe'}->root();
787: #
788: # Place some of the %$self items into the safe space except the safe space
789: # itself
790: my $initstring = '';
791: foreach (qw/uname udom type usymb cid csec coursefilename
792: cnum cdom chome uhome/) {
793: $initstring.= qq{\$$_="$self->{$_}";};
794: }
795: $self->{'safe'}->reval($initstring);
796: bless($self,$class);
797: return $self;
798: }
799:
800: ##
801: ## mask - used to reside in the safe space.
802: ##
803: {
804:
805: my %memoizer;
806:
807: sub mask {
808: my ($lower,$upper)=@_;
809: my $key = $lower.'_'.$upper;
810: if (exists($memoizer{$key})) {
811: return $memoizer{$key};
812: }
813: $upper = $lower if (! defined($upper));
814: #
815: my ($la,$ld) = ($lower=~/([A-Za-z]|\*)(\d+|\*)/);
816: my ($ua,$ud) = ($upper=~/([A-Za-z]|\*)(\d+|\*)/);
817: #
818: my $alpha='';
819: my $num='';
820: #
821: if (($la eq '*') || ($ua eq '*')) {
822: $alpha='[A-Za-z]';
823: } else {
824: if (($la=~/[A-Z]/) && ($ua=~/[A-Z]/) ||
825: ($la=~/[a-z]/) && ($ua=~/[a-z]/)) {
826: $alpha='['.$la.'-'.$ua.']';
827: } else {
828: $alpha='['.$la.'-Za-'.$ua.']';
829: }
830: }
831: if (($ld eq '*') || ($ud eq '*')) {
832: $num='\d+';
833: } else {
834: if (length($ld)!=length($ud)) {
835: $num.='(';
836: foreach ($ld=~m/\d/g) {
837: $num.='['.$_.'-9]';
838: }
839: if (length($ud)-length($ld)>1) {
840: $num.='|\d{'.(length($ld)+1).','.(length($ud)-1).'}';
841: }
842: $num.='|';
843: foreach ($ud=~m/\d/g) {
844: $num.='[0-'.$_.']';
845: }
846: $num.=')';
847: } else {
848: my @lda=($ld=~m/\d/g);
849: my @uda=($ud=~m/\d/g);
850: my $i;
851: my $j=0;
852: my $notdone=1;
853: for ($i=0;($i<=$#lda)&&($notdone);$i++) {
854: if ($lda[$i]==$uda[$i]) {
855: $num.=$lda[$i];
856: $j=$i;
857: } else {
858: $notdone=0;
859: }
860: }
861: if ($j<$#lda-1) {
862: $num.='('.$lda[$j+1];
863: for ($i=$j+2;$i<=$#lda;$i++) {
864: $num.='['.$lda[$i].'-9]';
865: }
866: if ($uda[$j+1]-$lda[$j+1]>1) {
867: $num.='|['.($lda[$j+1]+1).'-'.($uda[$j+1]-1).']\d{'.
868: ($#lda-$j-1).'}';
869: }
870: $num.='|'.$uda[$j+1];
871: for ($i=$j+2;$i<=$#uda;$i++) {
872: $num.='[0-'.$uda[$i].']';
873: }
874: $num.=')';
875: } else {
876: if ($lda[-1]!=$uda[-1]) {
877: $num.='['.$lda[-1].'-'.$uda[-1].']';
878: }
879: }
880: }
881: }
882: my $expression ='^'.$alpha.$num."\$";
883: $memoizer{$key} = $expression;
884: return $expression;
885: }
886:
887: }
888:
889: sub add_hash_to_safe {
890: my $self = shift;
891: my $code = <<'END';
892: #-------------------------------------------------------
893:
894: =item UWCALC(hashname,modules,units,date)
895:
896: returns the proportion of the module
897: weights not previously completed by the student.
898:
899: =over 4
900:
901: =item hashname
902:
903: name of the hash the module dates have been inserted into
904:
905: =item modules
906:
907: reference to a cell which contains a comma deliminated list of modules
908: covered by the assignment.
909:
910: =item units
911:
912: reference to a cell which contains a comma deliminated list of module
913: weights with respect to the assignment
914:
915: =item date
916:
917: reference to a cell which contains the date the assignment was completed.
918:
919: =back
920:
921: =cut
922:
923: #-------------------------------------------------------
924: sub UWCALC {
925: my ($hashname,$modules,$units,$date) = @_;
926: my @Modules = split(/,/,$modules);
927: my @Units = split(/,/,$units);
928: my $total_weight;
929: foreach (@Units) {
930: $total_weight += $_;
931: }
932: my $usum=0;
933: for (my $i=0; $i<=$#Modules; $i++) {
934: if (&HASH($hashname,$Modules[$i]) eq $date) {
935: $usum += $Units[$i];
936: }
937: }
938: return $usum/$total_weight;
939: }
940:
941: #-------------------------------------------------------
942:
943: =item CDLSUM(list)
944:
945: returns the sum of the elements in a cell which contains
946: a Comma Deliminate List of numerical values.
947: 'list' is a reference to a cell which contains a comma deliminated list.
948:
949: =cut
950:
951: #-------------------------------------------------------
952: sub CDLSUM {
953: my ($list)=@_;
954: my $sum;
955: foreach (split/,/,$list) {
956: $sum += $_;
957: }
958: return $sum;
959: }
960:
961: #-------------------------------------------------------
962:
963: =item CDLITEM(list,index)
964:
965: returns the item at 'index' in a Comma Deliminated List.
966:
967: =over 4
968:
969: =item list
970:
971: reference to a cell which contains a comma deliminated list.
972:
973: =item index
974:
975: the Perl index of the item requested (first element in list has
976: an index of 0)
977:
978: =back
979:
980: =cut
981:
982: #-------------------------------------------------------
983: sub CDLITEM {
984: my ($list,$index)=@_;
985: my @Temp = split/,/,$list;
986: return $Temp[$index];
987: }
988:
989: #-------------------------------------------------------
990:
991: =item CDLHASH(name,key,value)
992:
993: loads a comma deliminated list of keys into
994: the hash 'name', all with a value of 'value'.
995:
996: =over 4
997:
998: =item name
999:
1000: name of the hash.
1001:
1002: =item key
1003:
1004: (a pointer to) a comma deliminated list of keys.
1005:
1006: =item value
1007:
1008: a single value to be entered for each key.
1009:
1010: =back
1011:
1012: =cut
1013:
1014: #-------------------------------------------------------
1015: sub CDLHASH {
1016: my ($name,$key,$value)=@_;
1017: my @Keys;
1018: my @Values;
1019: # Check to see if we have multiple $key values
1020: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
1021: my $keymask = &mask($key);
1022: # Assume the keys are addresses
1023: my @Temp = grep /$keymask/,keys(%sheet_values);
1024: @Keys = $sheet_values{@Temp};
1025: } else {
1026: $Keys[0]= $key;
1027: }
1028: my @Temp;
1029: foreach $key (@Keys) {
1030: @Temp = (@Temp, split/,/,$key);
1031: }
1032: @Keys = @Temp;
1033: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
1034: my $valmask = &mask($value);
1035: my @Temp = grep /$valmask/,keys(%sheet_values);
1036: @Values =$sheet_values{@Temp};
1037: } else {
1038: $Values[0]= $value;
1039: }
1040: $value = $Values[0];
1041: # Add values to hash
1042: for (my $i = 0; $i<=$#Keys; $i++) {
1043: my $key = $Keys[$i];
1044: if (! exists ($hashes{$name}->{$key})) {
1045: $hashes{$name}->{$key}->[0]=$value;
1046: } else {
1047: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
1048: $hashes{$name}->{$key} = \@Temp;
1049: }
1050: }
1051: return "hash '$name' updated";
1052: }
1053:
1054: #-------------------------------------------------------
1055:
1056: =item GETHASH(name,key,index)
1057:
1058: returns the element in hash 'name'
1059: reference by the key 'key', at index 'index' in the values list.
1060:
1061: =cut
1062:
1063: #-------------------------------------------------------
1064: sub GETHASH {
1065: my ($name,$key,$index)=@_;
1066: if (! defined($index)) {
1067: $index = 0;
1068: }
1069: if ($key =~ /^[A-z]\d+$/) {
1070: $key = $sheet_values{$key};
1071: }
1072: return $hashes{$name}->{$key}->[$index];
1073: }
1074:
1075: #-------------------------------------------------------
1076:
1077: =item CLEARHASH(name)
1078:
1079: clears all the values from the hash 'name'
1080:
1081: =item CLEARHASH(name,key)
1082:
1083: clears all the values from the hash 'name' associated with the given key.
1084:
1085: =cut
1086:
1087: #-------------------------------------------------------
1088: sub CLEARHASH {
1089: my ($name,$key)=@_;
1090: if (defined($key)) {
1091: if (exists($hashes{$name}->{$key})) {
1092: $hashes{$name}->{$key}=undef;
1093: return "hash '$name' key '$key' cleared";
1094: }
1095: } else {
1096: if (exists($hashes{$name})) {
1097: $hashes{$name}=undef;
1098: return "hash '$name' cleared";
1099: }
1100: }
1101: return "Error in clearing hash";
1102: }
1103:
1104: #-------------------------------------------------------
1105:
1106: =item HASH(name,key,value)
1107:
1108: loads values into an internal hash. If a key
1109: already has a value associated with it, the values are sorted numerically.
1110:
1111: =item HASH(name,key)
1112:
1113: returns the 0th value in the hash 'name' associated with 'key'.
1114:
1115: =cut
1116:
1117: #-------------------------------------------------------
1118: sub HASH {
1119: my ($name,$key,$value)=@_;
1120: my @Keys;
1121: undef @Keys;
1122: my @Values;
1123: # Check to see if we have multiple $key values
1124: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
1125: my $keymask = &mask($key);
1126: # Assume the keys are addresses
1127: my @Temp = grep /$keymask/,keys(%sheet_values);
1128: @Keys = $sheet_values{@Temp};
1129: } else {
1130: $Keys[0]= $key;
1131: }
1132: # If $value is empty, return the first value associated
1133: # with the first key.
1134: if (! $value) {
1135: return $hashes{$name}->{$Keys[0]}->[0];
1136: }
1137: # Check to see if we have multiple $value(s)
1138: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
1139: my $valmask = &mask($value);
1140: my @Temp = grep /$valmask/,keys(%sheet_values);
1141: @Values =$sheet_values{@Temp};
1142: } else {
1143: $Values[0]= $value;
1144: }
1145: # Add values to hash
1146: for (my $i = 0; $i<=$#Keys; $i++) {
1147: my $key = $Keys[$i];
1148: my $value = ($i<=$#Values ? $Values[$i] : $Values[0]);
1149: if (! exists ($hashes{$name}->{$key})) {
1150: $hashes{$name}->{$key}->[0]=$value;
1151: } else {
1152: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
1153: $hashes{$name}->{$key} = \@Temp;
1154: }
1155: }
1156: return $Values[-1];
1157: }
1158: END
1159: $self->{'safe'}->reval($code);
1160: return;
1161: }
1162:
1163: sub initsheet {
1164: my $safeeval = new Safe(shift);
1165: my $safehole = new Safe::Hole;
1166: $safeeval->permit("entereval");
1167: $safeeval->permit(":base_math");
1168: $safeeval->permit("sort");
1169: $safeeval->deny(":base_io");
1170: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1171: $safehole->wrap(\&mask,$safeeval,'&mask');
1172: $safeeval->share('$@');
1173: my $code=<<'ENDDEFS';
1174: # ---------------------------------------------------- Inside of the safe space
1175: #
1176: # f: formulas
1177: # t: intermediate format (variable references expanded)
1178: # v: output values
1179: # c: preloaded constants (A-column)
1180: # rl: row label
1181: # os: other spreadsheets (for student spreadsheet only)
1182:
1183: undef %sheet_values; # Holds the (computed, final) values for the sheet
1184: # This is only written to by &calc, the spreadsheet computation routine.
1185: # It is read by many functions
1186: undef %t; # Holds the values of the spreadsheet temporarily. Set in &sett,
1187: # which does the translation of strings like C5 into the value in C5.
1188: # Used in &calc - %t holds the values that are actually eval'd.
1189: undef %f; # Holds the formulas for each cell. This is the users
1190: # (spreadsheet authors) data for each cell.
1191: undef %c; # Holds the constants for a sheet. In the assessment
1192: # sheets, this is the A column. Used in &MINPARM, &MAXPARM, &expandnamed,
1193: # &sett, and &constants. There is no &getconstants.
1194: # &constants is called by &loadstudent, &loadcourse, &load assessment,
1195: undef @os; # Holds the names of other spreadsheets - this is used to specify
1196: # the spreadsheets that are available for the assessment sheet.
1197: # Set by &setothersheets. &setothersheets is called by &handler. A
1198: # related subroutine is &othersheets.
1199: $errorlog = '';
1200:
1201: $maxrow = 0;
1202: $type = '';
1203:
1204: # filename/reference of the sheet
1205: $filename = '';
1206:
1207: # user data
1208: $uname = '';
1209: $uhome = '';
1210: $udom = '';
1211:
1212: # course data
1213:
1214: $csec = '';
1215: $chome= '';
1216: $cnum = '';
1217: $cdom = '';
1218: $cid = '';
1219: $coursefilename = '';
1220:
1221: # symb
1222:
1223: $usymb = '';
1224:
1225: # error messages
1226: $errormsg = '';
1227:
1228: #-------------------------------------------------------
1229:
1230: =item NUM(range)
1231:
1232: returns the number of items in the range.
1233:
1234: =cut
1235:
1236: #-------------------------------------------------------
1237: sub NUM {
1238: my $mask=&mask(@_);
1239: my $num= $#{@{grep(/$mask/,keys(%sheet_values))}}+1;
1240: return $num;
1241: }
1242:
1243: sub BIN {
1244: my ($low,$high,$lower,$upper)=@_;
1245: my $mask=&mask($lower,$upper);
1246: my $num=0;
1247: foreach (grep /$mask/,keys(%sheet_values)) {
1248: if (($sheet_values{$_}>=$low) && ($sheet_values{$_}<=$high)) {
1249: $num++;
1250: }
1251: }
1252: return $num;
1253: }
1254:
1255:
1256: #-------------------------------------------------------
1257:
1258: =item SUM(range)
1259:
1260: returns the sum of items in the range.
1261:
1262: =cut
1263:
1264: #-------------------------------------------------------
1265: sub SUM {
1266: my $mask=&mask(@_);
1267: my $sum=0;
1268: foreach (grep /$mask/,keys(%sheet_values)) {
1269: $sum+=$sheet_values{$_};
1270: }
1271: return $sum;
1272: }
1273:
1274: #-------------------------------------------------------
1275:
1276: =item MEAN(range)
1277:
1278: compute the average of the items in the range.
1279:
1280: =cut
1281:
1282: #-------------------------------------------------------
1283: sub MEAN {
1284: my $mask=&mask(@_);
1285: # $errorlog.='(mask = '.$mask.' )';
1286: my $sum=0;
1287: my $num=0;
1288: foreach (grep /$mask/,keys(%sheet_values)) {
1289: $sum+=$sheet_values{$_};
1290: $num++;
1291: }
1292: if ($num) {
1293: return $sum/$num;
1294: } else {
1295: return undef;
1296: }
1297: }
1298:
1299: #-------------------------------------------------------
1300:
1301: =item STDDEV(range)
1302:
1303: compute the standard deviation of the items in the range.
1304:
1305: =cut
1306:
1307: #-------------------------------------------------------
1308: sub STDDEV {
1309: my $mask=&mask(@_);
1310: # $errorlog.='(mask = '.$mask.' )';
1311: my $sum=0; my $num=0;
1312: foreach (grep /$mask/,keys(%sheet_values)) {
1313: $sum+=$sheet_values{$_};
1314: $num++;
1315: }
1316: unless ($num>1) { return undef; }
1317: my $mean=$sum/$num;
1318: $sum=0;
1319: foreach (grep /$mask/,keys(%sheet_values)) {
1320: $sum+=($sheet_values{$_}-$mean)**2;
1321: }
1322: return sqrt($sum/($num-1));
1323: }
1324:
1325: #-------------------------------------------------------
1326:
1327: =item PROD(range)
1328:
1329: compute the product of the items in the range.
1330:
1331: =cut
1332:
1333: #-------------------------------------------------------
1334: sub PROD {
1335: my $mask=&mask(@_);
1336: my $prod=1;
1337: foreach (grep /$mask/,keys(%sheet_values)) {
1338: $prod*=$sheet_values{$_};
1339: }
1340: return $prod;
1341: }
1342:
1343: #-------------------------------------------------------
1344:
1345: =item MAX(range)
1346:
1347: compute the maximum of the items in the range.
1348:
1349: =cut
1350:
1351: #-------------------------------------------------------
1352: sub MAX {
1353: my $mask=&mask(@_);
1354: my $max='-';
1355: foreach (grep /$mask/,keys(%sheet_values)) {
1356: unless ($max) { $max=$sheet_values{$_}; }
1357: if (($sheet_values{$_}>$max) || ($max eq '-')) { $max=$sheet_values{$_}; }
1358: }
1359: return $max;
1360: }
1361:
1362: #-------------------------------------------------------
1363:
1364: =item MIN(range)
1365:
1366: compute the minimum of the items in the range.
1367:
1368: =cut
1369:
1370: #-------------------------------------------------------
1371: sub MIN {
1372: my $mask=&mask(@_);
1373: my $min='-';
1374: foreach (grep /$mask/,keys(%sheet_values)) {
1375: unless ($max) { $max=$sheet_values{$_}; }
1376: if (($sheet_values{$_}<$min) || ($min eq '-')) {
1377: $min=$sheet_values{$_};
1378: }
1379: }
1380: return $min;
1381: }
1382:
1383: #-------------------------------------------------------
1384:
1385: =item SUMMAX(num,lower,upper)
1386:
1387: compute the sum of the largest 'num' items in the range from
1388: 'lower' to 'upper'
1389:
1390: =cut
1391:
1392: #-------------------------------------------------------
1393: sub SUMMAX {
1394: my ($num,$lower,$upper)=@_;
1395: my $mask=&mask($lower,$upper);
1396: my @inside=();
1397: foreach (grep /$mask/,keys(%sheet_values)) {
1398: push (@inside,$sheet_values{$_});
1399: }
1400: @inside=sort(@inside);
1401: my $sum=0; my $i;
1402: for ($i=$#inside;(($i>$#inside-$num) && ($i>=0));$i--) {
1403: $sum+=$inside[$i];
1404: }
1405: return $sum;
1406: }
1407:
1408: #-------------------------------------------------------
1409:
1410: =item SUMMIN(num,lower,upper)
1411:
1412: compute the sum of the smallest 'num' items in the range from
1413: 'lower' to 'upper'
1414:
1415: =cut
1416:
1417: #-------------------------------------------------------
1418: sub SUMMIN {
1419: my ($num,$lower,$upper)=@_;
1420: my $mask=&mask($lower,$upper);
1421: my @inside=();
1422: foreach (grep /$mask/,keys(%sheet_values)) {
1423: $inside[$#inside+1]=$sheet_values{$_};
1424: }
1425: @inside=sort(@inside);
1426: my $sum=0; my $i;
1427: for ($i=0;(($i<$num) && ($i<=$#inside));$i++) {
1428: $sum+=$inside[$i];
1429: }
1430: return $sum;
1431: }
1432:
1433: #-------------------------------------------------------
1434:
1435: =item MINPARM(parametername)
1436:
1437: Returns the minimum value of the parameters matching the parametername.
1438: parametername should be a string such as 'duedate'.
1439:
1440: =cut
1441:
1442: #-------------------------------------------------------
1443: sub MINPARM {
1444: my ($expression) = @_;
1445: my $min = undef;
1446: study($expression);
1447: foreach $parameter (keys(%c)) {
1448: next if ($parameter !~ /$expression/);
1449: if ((! defined($min)) || ($min > $c{$parameter})) {
1450: $min = $c{$parameter}
1451: }
1452: }
1453: return $min;
1454: }
1455:
1456: #-------------------------------------------------------
1457:
1458: =item MAXPARM(parametername)
1459:
1460: Returns the maximum value of the parameters matching the input parameter name.
1461: parametername should be a string such as 'duedate'.
1462:
1463: =cut
1464:
1465: #-------------------------------------------------------
1466: sub MAXPARM {
1467: my ($expression) = @_;
1468: my $max = undef;
1469: study($expression);
1470: foreach $parameter (keys(%c)) {
1471: next if ($parameter !~ /$expression/);
1472: if ((! defined($min)) || ($max < $c{$parameter})) {
1473: $max = $c{$parameter}
1474: }
1475: }
1476: return $max;
1477: }
1478:
1479: sub calc {
1480: # $errorlog .= "\%t has ".(keys(%t))." keys\n";
1481: %sheet_values = %t; # copy %t into %sheet_values.
1482: # $errorlog .= "\%sheet_values has ".(keys(%sheet_values))." keys\n";
1483: my $notfinished=1;
1484: my $lastcalc='';
1485: my $depth=0;
1486: while ($notfinished) {
1487: $notfinished=0;
1488: while (my ($cell,$value) = each(%t)) {
1489: my $old=$sheet_values{$cell};
1490: $sheet_values{$cell}=eval $value;
1491: if ($@) {
1492: undef %sheet_values;
1493: return $cell.': '.$@;
1494: }
1495: if ($sheet_values{$cell} ne $old) {
1496: $notfinished=1;
1497: $lastcalc=$cell;
1498: }
1499: }
1500: $depth++;
1501: if ($depth>100) {
1502: undef %sheet_values;
1503: return $lastcalc.': Maximum calculation depth exceeded';
1504: }
1505: }
1506: return '';
1507: }
1508:
1509: # ------------------------------------------- End of "Inside of the safe space"
1510: ENDDEFS
1511: $safeeval->reval($code);
1512: return $safeeval;
1513: }
1514:
1515:
1516: #
1517: # expandnamed used to reside in the safe space
1518: #
1519: sub expandnamed {
1520: my $self = shift;
1521: my $expression=shift;
1522: if ($expression=~/^\&/) {
1523: my ($func,$var,$formula)=($expression=~/^\&(\w+)\(([^\;]+)\;(.*)\)/);
1524: my @vars=split(/\W+/,$formula);
1525: my %values=();
1526: foreach my $varname ( @vars ) {
1527: if ($varname=~/\D/) {
1528: $formula=~s/$varname/'$c{\''.$varname.'\'}'/ge;
1529: $varname=~s/$var/\([\\w:-]\+\)/g;
1530: foreach (keys(%{$self->{'constants'}})) {
1531: if ($_=~/$varname/) {
1532: $values{$1}=1;
1533: }
1534: }
1535: }
1536: }
1537: if ($func eq 'EXPANDSUM') {
1538: my $result='';
1539: foreach (keys(%values)) {
1540: my $thissum=$formula;
1541: $thissum=~s/$var/$_/g;
1542: $result.=$thissum.'+';
1543: }
1544: $result=~s/\+$//;
1545: return $result;
1546: } else {
1547: return 0;
1548: }
1549: } else {
1550: # it is not a function, so it is a parameter name
1551: # We should do the following:
1552: # 1. Take the list of parameter names
1553: # 2. look through the list for ones that match the parameter we want
1554: # 3. If there are no collisions, return the one that matches
1555: # 4. If there is a collision, return 'bad parameter name error'
1556: my $returnvalue = '';
1557: my @matches = ();
1558: $#matches = -1;
1559: study $expression;
1560: my $parameter;
1561: foreach $parameter (keys(%{$self->{'constants'}})) {
1562: push @matches,$parameter if ($parameter =~ /$expression/);
1563: }
1564: if (scalar(@matches) == 0) {
1565: $returnvalue = 'unmatched parameter: '.$parameter;
1566: } elsif (scalar(@matches) == 1) {
1567: # why do we not do this lookup here, instead of delaying it?
1568: $returnvalue = '$c{\''.$matches[0].'\'}';
1569: } elsif (scalar(@matches) > 0) {
1570: # more than one match. Look for a concise one
1571: $returnvalue = "'non-unique parameter name : $expression'";
1572: foreach (@matches) {
1573: if (/^$expression$/) {
1574: # why do we not do this lookup here?
1575: $returnvalue = '$c{\''.$_.'\'}';
1576: }
1577: }
1578: } else {
1579: # There was a negative number of matches, which indicates
1580: # something is wrong with reality. Better warn the user.
1581: $returnvalue = 'bizzare parameter: '.$parameter;
1582: }
1583: return $returnvalue;
1584: }
1585: }
1586:
1587: #
1588: # sett used to reside in the safe space
1589: #
1590: sub sett {
1591: my $self = shift;
1592: my %t=();
1593: my $pattern='';
1594: if ($self->{'type'} eq 'assesscalc') {
1595: $pattern='A';
1596: } else {
1597: $pattern='[A-Z]';
1598: }
1599: # Deal with the template row
1600: foreach my $col ($self->template_cells()) {
1601: next if ($col=~/^$pattern/);
1602: foreach my $trow ($self->rows()) {
1603: # Get the name of this cell
1604: my $lb=$col.$trow;
1605: # Grab the template declaration
1606: $t{$lb}=$self->formula('template_'.$col);
1607: # Replace '#' with the row number
1608: $t{$lb}=~s/\#/$trow/g;
1609: # Replace '....' with ','
1610: $t{$lb}=~s/\.\.+/\,/g;
1611: # Replace 'A0' with the value from 'A0'
1612: $t{$lb}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
1613: # Replace parameters
1614: $t{$lb}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
1615: }
1616: }
1617: # Deal with the normal cells
1618: foreach ($self->formulas_keys()) {
1619: next if ($_=~/template\_/);
1620: if (($_=~/^$pattern(\d+)/) && ($1)) {
1621: if ($self->formula($_) !~ /^\!/) {
1622: $t{$_}=$self->{'constants'}->{$_};
1623: }
1624: } else {
1625: $t{$_}=$self->formula($_);
1626: $t{$_}=~s/\.\.+/\,/g;
1627: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
1628: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
1629: }
1630: }
1631: # For inserted lines, [B-Z] is also valid
1632: if ($self->{'type'} ne 'assesscalc') {
1633: foreach ($self->formulas_keys()) {
1634: next if ($_ !~ /[B-Z](\d+)/);
1635: next if ($self->formula('A'.$1) !~ /^[\~\-]/);
1636: $t{$_}=$self->formula($_);
1637: $t{$_}=~s/\.\.+/\,/g;
1638: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
1639: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
1640: }
1641: }
1642: # For some reason 'A0' gets special treatment... This seems superfluous
1643: # but I imagine it is here for a reason.
1644: $t{'A0'}=$self->formula('A0');
1645: $t{'A0'}=~s/\.\.+/\,/g;
1646: $t{'A0'}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
1647: $t{'A0'}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.$self->expandnamed($2)/ge;
1648: # Put %t into the safe space
1649: %{$self->{'safe'}->varglob('t')}=%t;
1650: }
1651:
1652:
1653: ###########################################
1654: ### Row output routines ###
1655: ###########################################
1656: #
1657: # get_row: Produce output row n from sheet by calling the appropriate routine
1658: #
1659: sub get_row {
1660: my $self = shift;
1661: my ($n) = @_;
1662: my ($rowlabel,@rowdata);
1663: if ($n eq '-') {
1664: ($rowlabel,@rowdata) = $self->templaterow();
1665: } elsif ($self->{'type'} eq 'studentcalc') {
1666: ($rowlabel,@rowdata) = $self->outrowassess($n);
1667: } else {
1668: ($rowlabel,@rowdata) = $self->outrow($n);
1669: }
1670: return ($rowlabel,@rowdata);
1671: }
1672:
1673: sub templaterow {
1674: my $self = shift;
1675: my @cols=();
1676: my $rowlabel = 'Template</td><td> ';
1677: foreach my $n ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1678: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1679: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1680: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1681: push(@cols,{ name => 'template_'.$_,
1682: formula => $self->formula('template_'.$n),
1683: value => $self->value('template_'.$n) });
1684: }
1685: return ($rowlabel,@cols);
1686: }
1687:
1688: sub outrowassess {
1689: my $self = shift;
1690: # $n is the current row number
1691: my ($n) = @_;
1692: my @cols=();
1693: my $rowlabel='';
1694: if ($n) {
1695: my ($usy,$ufn)=split(/__&&&\__/,$self->formula('A'.$n));
1696: if (exists($self->{'rowlabel'}->{$usy})) {
1697: # This is dumb, but we need the information when we output
1698: # the html version of the studentcalc spreadsheet for the
1699: # links to the assesscalc sheets.
1700: $rowlabel = $self->{'rowlabel'}->{$usy}.':'.
1701: &Apache::lonnet::escape($ufn);
1702: } else {
1703: $rowlabel = '';
1704: }
1705: } elsif ($ENV{'request.role'} =~ /^st\./) {
1706: $rowlabel = 'Summary</td><td>0';
1707: } else {
1708: $rowlabel = 'Export</td><td>0';
1709: }
1710: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1711: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1712: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1713: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1714: push(@cols,{ name => $_.$n,
1715: formula => $self->formula($_.$n),
1716: value => $self->value($_.$n)});
1717: }
1718: return ($rowlabel,@cols);
1719: }
1720:
1721: sub outrow {
1722: my $self = shift;
1723: my ($n)=@_;
1724: my @cols=();
1725: my $rowlabel;
1726: if ($n) {
1727: $rowlabel = $self->{'rowlabel'}->{$self->formula('A'.$n)};
1728: } else {
1729: if ($self->{'type'} eq 'classcalc') {
1730: $rowlabel = 'Summary</td><td>0';
1731: } else {
1732: $rowlabel = 'Export</td><td>0';
1733: }
1734: }
1735: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1736: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1737: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1738: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1739: push(@cols,{ name => $_.$n,
1740: formula => $self->formula($_.$n),
1741: value => $self->value($_.$n)});
1742: }
1743: return ($rowlabel,@cols);
1744: }
1745:
1746: ########################################################
1747: #### Spreadsheet calculation methods #####
1748: ########################################################
1749: #
1750: # calcsheet: makes all the calls to compute the spreadsheet.
1751: #
1752: sub calcsheet {
1753: my $self = shift;
1754: $self->sync_safe_space();
1755: $self->clear_errorlog();
1756: $self->sett();
1757: my $result = $self->{'safe'}->reval('&calc();');
1758: %{$self->{'values'}} = %{$self->{'safe'}->varglob('sheet_values')};
1759: # $self->logthis($self->get_errorlog());
1760: return $result;
1761: }
1762:
1763: ##
1764: ## sync_safe_space: Called by calcsheet to make sure all the data we
1765: # need to calculate is placed into the safe space
1766: ##
1767: sub sync_safe_space {
1768: my $self = shift;
1769: # Inside the safe space 'formulas' has a diabolical alter-ego named 'f'.
1770: %{$self->{'safe'}->varglob('f')}=%{$self->{'formulas'}};
1771: # 'constants' leads a peaceful hidden life of 'c'.
1772: %{$self->{'safe'}->varglob('c')}=%{$self->{'constants'}};
1773: # 'othersheets' hides as 'os', a disguise few can penetrate.
1774: @{$self->{'safe'}->varglob('os')}=@{$self->{'othersheets'}};
1775: }
1776:
1777: ##
1778: ## Retrieve the error log from the safe space (used for debugging)
1779: ##
1780: sub get_errorlog {
1781: my $self = shift;
1782: $self->{'errorlog'} = ${$self->{'safe'}->varglob('errorlog')};
1783: return $self->{'errorlog'};
1784: }
1785:
1786: ##
1787: ## Clear the error log inside the safe space
1788: ##
1789: sub clear_errorlog {
1790: my $self = shift;
1791: ${$self->{'safe'}->varglob('errorlog')} = '';
1792: $self->{'errorlog'} = '';
1793: }
1794:
1795:
1796: ########################################################
1797: #### Spreadsheet content retrieval/setting methods #####
1798: ########################################################
1799: ##
1800: ## constants: either set or get the constants
1801: ##
1802: ##
1803: sub constants {
1804: my $self=shift;
1805: my ($constants) = @_;
1806: if (defined($constants)) {
1807: if (! ref($constants)) {
1808: my %tmp = @_;
1809: $constants = \%tmp;
1810: }
1811: $self->{'constants'} = $constants;
1812: return;
1813: } else {
1814: return %{$self->{'constants'}};
1815: }
1816: }
1817:
1818: ##
1819: ## formulas: either set or get the formulas
1820: ##
1821: sub formulas {
1822: my $self=shift;
1823: my ($formulas) = @_;
1824: if (defined($formulas)) {
1825: if (! ref($formulas)) {
1826: my %tmp = @_;
1827: $formulas = \%tmp;
1828: }
1829: $self->{'formulas'} = $formulas;
1830: $self->{'rows'} = [];
1831: $self->{'template_cells'} = [];
1832: return;
1833: } else {
1834: return %{$self->{'formulas'}};
1835: }
1836: }
1837:
1838: ##
1839: ## formulas_keys: Return the keys to the formulas hash.
1840: ##
1841: sub formulas_keys {
1842: my $self = shift;
1843: my @keys = keys(%{$self->{'formulas'}});
1844: return keys(%{$self->{'formulas'}});
1845: }
1846:
1847: ##
1848: ## formula: Return the formula for a given cell in the spreadsheet
1849: ## returns '' if the cell does not have a formula or does not exist
1850: ##
1851: sub formula {
1852: my $self = shift;
1853: my $cell = shift;
1854: if (defined($cell) && exists($self->{'formulas'}->{$cell})) {
1855: return $self->{'formulas'}->{$cell};
1856: }
1857: return '';
1858: }
1859:
1860: ##
1861: ## logthis: write the input to lonnet.log
1862: ##
1863: sub logthis {
1864: my $self = shift;
1865: my $message = shift;
1866: &Apache::lonnet::logthis($self->{'type'}.':'.
1867: $self->{'uname'}.':'.$self->{'udom'}.':'.
1868: $message);
1869: return;
1870: }
1871:
1872: ##
1873: ## dump_formulas_to_log: makes lonnet.log huge...
1874: ##
1875: sub dump_formulas_to_log {
1876: my $self =shift;
1877: $self->logthis("Spreadsheet formulas");
1878: $self->logthis("--------------------------------------------------------");
1879: while (my ($cell, $formula) = each(%{$self->{'formulas'}})) {
1880: $self->logthis(' '.$cell.' = '.$formula);
1881: }
1882: $self->logthis("--------------------------------------------------------");}
1883:
1884: ##
1885: ## value: returns the computed value of a particular cell
1886: ##
1887: sub value {
1888: my $self = shift;
1889: my $cell = shift;
1890: if (defined($cell) && exists($self->{'values'}->{$cell})) {
1891: return $self->{'values'}->{$cell};
1892: }
1893: return '';
1894: }
1895:
1896: ##
1897: ## dump_values_to_log: makes lonnet.log huge...
1898: ##
1899: sub dump_values_to_log {
1900: my $self =shift;
1901: $self->logthis("Spreadsheet Values");
1902: $self->logthis("--------------------------------------------------------");
1903: while (my ($cell, $value) = each(%{$self->{'values'}})) {
1904: $self->logthis(' '.$cell.' = '.$value);
1905: }
1906: $self->logthis("--------------------------------------------------------");}
1907:
1908: ##
1909: ## Yet another debugging function
1910: ##
1911: sub dump_hash_to_log {
1912: my $self= shift();
1913: my %tmp = @_;
1914: if (@_<2) {
1915: %tmp = %{$_[0]};
1916: }
1917: $self->logthis('---------------------------- (entries end with ":"');
1918: while (my ($key,$val) = each (%tmp)) {
1919: $self->logthis($key.' = '.$val.':');
1920: }
1921: $self->logthis('---------------------------- (entries end with ":"');
1922: }
1923:
1924: ################################
1925: ## Helper functions ##
1926: ################################
1927: ##
1928: ## rebuild_stats: rebuilds the rows and template_cells arrays
1929: ##
1930: sub rebuild_stats {
1931: my $self = shift;
1932: $self->{'rows'}=[];
1933: $self->{'template_cells'}=[];
1934: foreach my $cell($self->formulas_keys()) {
1935: push(@{$self->{'rows'}},$1) if ($cell =~ /^A(\d+)/ && $1 != 0);
1936: push(@{$self->{'template_cells'}},$1) if ($cell =~ /^template_(\w+)/);
1937: }
1938: return;
1939: }
1940:
1941: ##
1942: ## template_cells returns a list of the cells defined in the template row
1943: ##
1944: sub template_cells {
1945: my $self = shift;
1946: $self->rebuild_stats() if (!@{$self->{'template_cells'}});
1947: return @{$self->{'template_cells'}};
1948: }
1949:
1950: ##
1951: ## rows returns a list of the names of cells defined in the A column
1952: ##
1953: sub rows {
1954: my $self = shift;
1955: $self->rebuild_stats() if (!@{$self->{'rows'}});
1956: return @{$self->{'rows'}};
1957: }
1958:
1959: ##
1960: ## Sigh....
1961: ##
1962: sub setothersheets {
1963: my $self = shift;
1964: my @othersheets = @_;
1965: $self->{'othersheets'} = \@othersheets;
1966: }
1967:
1968: ##
1969: ## rowlabels: get or set the rowlabels hash from the spreadsheet.
1970: ##
1971: sub rowlabels {
1972: my $self = shift;
1973: my ($rowlabel) = @_;
1974: if (defined($rowlabel)) {
1975: if (! ref($rowlabel)) {
1976: my %tmp = @_;
1977: $rowlabel = \%tmp;
1978: }
1979: $self->{'rowlabel'}=$rowlabel;
1980: return;
1981: } else {
1982: return %{$self->{'rowlabel'}} if (defined($self->{'rowlabel'}));
1983: }
1984: }
1985:
1986: ##
1987: ## gettitle: returns a title for the spreadsheet.
1988: ##
1989: sub gettitle {
1990: my $self = shift;
1991: if ($self->{'type'} eq 'classcalc') {
1992: return $self->{'coursedesc'};
1993: } elsif ($self->{'type'} eq 'studentcalc') {
1994: return 'Grades for '.$self->{'uname'}.'@'.$self->{'udom'};
1995: } elsif ($self->{'type'} eq 'assesscalc') {
1996: if (($self->{'usymb'} eq '_feedback') ||
1997: ($self->{'usymb'} eq '_evaluation') ||
1998: ($self->{'usymb'} eq '_discussion') ||
1999: ($self->{'usymb'} eq '_tutoring')) {
2000: my $title = $self->{'usymb'};
2001: $title =~ s/^_//;
2002: $title = ucfirst($title);
2003: return $title;
2004: }
2005: return if (! defined($self->{'mapid'}) ||
2006: $self->{'mapid'} !~ /^\d+$/);
2007: my $mapid = $self->{'mapid'};
2008: return if (! defined($self->{'resid'}) ||
2009: $self->{'resid'} !~ /^\d+$/);
2010: my $resid = $self->{'resid'};
2011: my %course_db;
2012: tie(%course_db,'GDBM_File',$self->{'coursefilename'}.'.db',
2013: &GDBM_READER(),0640);
2014: return if (! tied(%course_db));
2015: my $key = 'title_'.$mapid.'.'.$resid;
2016: my $title = '';
2017: if (exists($course_db{$key})) {
2018: $title = $course_db{$key};
2019: } else {
2020: $title = $self->{'usymb'};
2021: }
2022: untie (%course_db);
2023: return $title;
2024: }
2025: }
2026:
2027: #
2028: # Export of A-row
2029: #
2030: sub exportdata {
2031: my $self=shift;
2032: my @exportarray=();
2033: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
2034: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
2035: push(@exportarray,$self->value($_.'0'));
2036: }
2037: return @exportarray;
2038: }
2039:
2040: ##
2041: ## update_student_sheet: experimental function
2042: ##
2043: sub update_student_sheet{
2044: my $self = shift;
2045: my ($r,$c) = @_;
2046: # Load in the studentcalc sheet
2047: $self->readsheet('default_studentcalc');
2048: # Determine the structure (contained assessments, etc) of the sheet
2049: $self->updatesheet();
2050: # Load in the cached sheets for this student
2051: $self->cachedssheets();
2052: # Load in the (possibly cached) data from the assessment sheets
2053: $self->loadstudent($r,$c);
2054: # Compute the sheet
2055: $self->calcsheet();
2056: }
2057:
2058: #
2059: # sort_indicies: returns an ordered list of the rows of the spreadsheet
2060: #
2061: sub sort_indicies {
2062: my $self = shift;
2063: my @sortidx=();
2064: #
2065: if ($self->{'type'} eq 'classcalc') {
2066: my @sortby=(undef);
2067: # Skip row 0
2068: for (my $row=1;$row<=$self->{'maxrow'};$row++) {
2069: my (undef,$sname,$sdom,$fullname,$section,$id) =
2070: split(':',$self->{'rowlabel'}->{$self->formula('A'.$row)});
2071: push (@sortby, lc($fullname));
2072: push (@sortidx, $row);
2073: }
2074: @sortidx = sort { $sortby[$a] cmp $sortby[$b]; } @sortidx;
2075: } elsif ($self->{'type'} eq 'studentcalc') {
2076: my @sortby1=(undef);
2077: my @sortby2=(undef);
2078: # Skip row 0
2079: for (my $row=1;$row<=$self->{'maxrow'};$row++) {
2080: my ($key,undef) = split(/__&&&\__/,$self->formula('A'.$row));
2081: my $rowlabel = $self->{'rowlabel'}->{$key};
2082: my (undef,$symb,$mapid,$resid,$title,$ufn) =
2083: split(':',$rowlabel);
2084: $ufn = &Apache::lonnet::unescape($ufn);
2085: $symb = &Apache::lonnet::unescape($symb);
2086: $title = &Apache::lonnet::unescape($title);
2087: my ($sequence) = ($symb =~ /\/([^\/]*\.sequence)/);
2088: if ($sequence eq '') {
2089: $sequence = $symb;
2090: }
2091: push (@sortby1, $sequence);
2092: push (@sortby2, $title);
2093: push (@sortidx, $row);
2094: }
2095: @sortidx = sort { $sortby1[$a] cmp $sortby1[$b] ||
2096: $sortby2[$a] cmp $sortby2[$b] } @sortidx;
2097: } else {
2098: my @sortby=(undef);
2099: # Skip row 0
2100: $self->sync_safe_space();
2101: for (my $row=1;$row<=$self->{'maxrow'};$row++) {
2102: push (@sortby, $self->{'safe'}->reval('$f{"A'.$row.'"}'));
2103: push (@sortidx, $row);
2104: }
2105: @sortidx = sort { $sortby[$a] cmp $sortby[$b]; } @sortidx;
2106: }
2107: return @sortidx;
2108: }
2109:
2110: #############################################################
2111: ### ###
2112: ### Spreadsheet Output Routines ###
2113: ### ###
2114: #############################################################
2115:
2116: ############################################
2117: ## HTML output routines ##
2118: ############################################
2119: sub html_editable_cell {
2120: my ($cell,$bgcolor) = @_;
2121: my $result;
2122: my ($name,$formula,$value);
2123: if (defined($cell)) {
2124: $name = $cell->{'name'};
2125: $formula = $cell->{'formula'};
2126: $value = $cell->{'value'};
2127: }
2128: $name = '' if (! defined($name));
2129: $formula = '' if (! defined($formula));
2130: if (! defined($value)) {
2131: $value = '<font color="'.$bgcolor.'">#</font>';
2132: if ($formula ne '') {
2133: $value = '<i>undefined value</i>';
2134: }
2135: } elsif ($value =~ /^\s*$/ ) {
2136: $value = '<font color="'.$bgcolor.'">#</font>';
2137: } else {
2138: $value = &HTML::Entities::encode($value) if ($value !~/ /);
2139: }
2140: # Make the formula safe for outputting
2141: $formula =~ s/\'/\"/g;
2142: # The formula will be parsed by the browser *twice* before being
2143: # displayed to the user for editing.
2144: $formula = &HTML::Entities::encode(&HTML::Entities::encode($formula));
2145: # Escape newlines so they make it into the edit window
2146: $formula =~ s/\n/\\n/gs;
2147: # Glue everything together
2148: $result .= "<a href=\"javascript:celledit(\'".
2149: $name."','".$formula."');\">".$value."</a>";
2150: return $result;
2151: }
2152:
2153: sub html_uneditable_cell {
2154: my ($cell,$bgcolor) = @_;
2155: my $value = (defined($cell) ? $cell->{'value'} : '');
2156: $value = &HTML::Entities::encode($value) if ($value !~/ /);
2157: return ' '.$value.' ';
2158: }
2159:
2160: sub outsheet_html {
2161: my $self = shift;
2162: my ($r) = @_;
2163: my ($num_uneditable,$realm,$row_type);
2164: my $requester_is_student = ($ENV{'request.role'} =~ /^st\./);
2165: if ($self->{'type'} eq 'assesscalc') {
2166: $num_uneditable = 1;
2167: $realm = 'Assessment';
2168: $row_type = 'Item';
2169: } elsif ($self->{'type'} eq 'studentcalc') {
2170: $num_uneditable = 26;
2171: $realm = 'User';
2172: $row_type = 'Assessment';
2173: } elsif ($self->{'type'} eq 'classcalc') {
2174: $num_uneditable = 26;
2175: $realm = 'Course';
2176: $row_type = 'Student';
2177: } else {
2178: return; # error
2179: }
2180: ####################################
2181: # Print out header table
2182: ####################################
2183: my $num_left = 52-$num_uneditable;
2184: my $tabledata =<<"END";
2185: <table border="2">
2186: <tr>
2187: <th colspan="2" rowspan="2"><font size="+2">$realm</font></th>
2188: <td bgcolor="#FFDDDD" colspan="$num_uneditable">
2189: <b><font size="+1">Import</font></b></td>
2190: <td colspan="$num_left">
2191: <b><font size="+1">Calculations</font></b></td>
2192: </tr><tr>
2193: END
2194: my $label_num = 0;
2195: foreach (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')){
2196: if ($label_num<$num_uneditable) {
2197: $tabledata.='<td bgcolor="#FFDDDD">';
2198: } else {
2199: $tabledata.='<td>';
2200: }
2201: $tabledata.="<b><font size=+1>$_</font></b></td>";
2202: $label_num++;
2203: }
2204: $tabledata.="</tr>\n";
2205: $r->print($tabledata);
2206: ####################################
2207: # Print out template row
2208: ####################################
2209: my ($num_cols_output,$row_html,$rowlabel,@rowdata);
2210:
2211: if (! $requester_is_student) {
2212: ($rowlabel,@rowdata) = $self->get_row('-');
2213: $row_html = '<tr><td>'.$self->format_html_rowlabel($rowlabel).'</td>';
2214: $num_cols_output = 0;
2215: foreach my $cell (@rowdata) {
2216: if ($requester_is_student ||
2217: $num_cols_output++ < $num_uneditable) {
2218: $row_html .= '<td bgcolor="#FFDDDD">';
2219: $row_html .= &html_uneditable_cell($cell,'#FFDDDD');
2220: } else {
2221: $row_html .= '<td bgcolor="#EOFFDD">';
2222: $row_html .= &html_editable_cell($cell,'#E0FFDD');
2223: }
2224: $row_html .= '</td>';
2225: }
2226: $row_html.= "</tr>\n";
2227: $r->print($row_html);
2228: }
2229: ####################################
2230: # Print out summary/export row
2231: ####################################
2232: ($rowlabel,@rowdata) = $self->get_row('0');
2233: $row_html = '<tr><td>'.$self->format_html_rowlabel($rowlabel).'</td>';
2234: $num_cols_output = 0;
2235: foreach my $cell (@rowdata) {
2236: if ($num_cols_output++ < 26 && ! $requester_is_student) {
2237: $row_html .= '<td bgcolor="#CCCCFF">';
2238: $row_html .= &html_editable_cell($cell,'#CCCCFF');
2239: } else {
2240: $row_html .= '<td bgcolor="#DDCCFF">';
2241: $row_html .= &html_uneditable_cell($cell,'#CCCCFF');
2242: }
2243: $row_html .= '</td>';
2244: }
2245: $row_html.= "</tr>\n";
2246: $r->print($row_html);
2247: $r->print('</table>');
2248: ####################################
2249: # Prepare to output rows
2250: ####################################
2251: my @Rows = $self->sort_indicies();
2252: #
2253: # Loop through the rows and output them one at a time
2254: my $rows_output=0;
2255: foreach my $rownum (@Rows) {
2256: my ($rowlabel,@rowdata) = $self->get_row($rownum);
2257: next if ($rowlabel =~ /^\s*$/);
2258: next if (($self->{'type'} eq 'assesscalc') &&
2259: (! $ENV{'form.showall'}) &&
2260: ($rowdata[0]->{'value'} =~ /^\s*$/));
2261: if (! $ENV{'form.showall'} &&
2262: $self->{'type'} =~ /^(studentcalc|classcalc)$/) {
2263: my $row_is_empty = 1;
2264: foreach my $cell (@rowdata) {
2265: if ($cell->{'value'} !~ /^\s*$/) {
2266: $row_is_empty = 0;
2267: last;
2268: }
2269: }
2270: next if ($row_is_empty);
2271: }
2272: #
2273: my $defaultbg='#E0FF';
2274: #
2275: my $row_html ="\n".'<tr><td><b><font size=+1>'.$rownum.
2276: '</font></b></td>';
2277: #
2278: if ($self->{'type'} eq 'classcalc') {
2279: $row_html.='<td>'.$self->format_html_rowlabel($rowlabel).'</td>';
2280: # Output links for each student?
2281: # Nope, that is already done for us in format_html_rowlabel
2282: # (for now)
2283: } elsif ($self->{'type'} eq 'studentcalc') {
2284: my $ufn = (split(/:/,$rowlabel))[5];
2285: $row_html.='<td>'.$self->format_html_rowlabel($rowlabel);
2286: $row_html.= '<br>'.
2287: '<select name="sel_'.$rownum.'" '.
2288: 'onChange="changesheet('.$rownum.')">'.
2289: '<option name="default">Default</option>';
2290: foreach (@{$self->{'othersheets'}}) {
2291: $row_html.='<option name="'.$_.'"';
2292: if ($ufn eq $_) {
2293: $row_html.=' selected';
2294: }
2295: $row_html.='>'.$_.'</option>';
2296: }
2297: $row_html.='</select></td>';
2298: } elsif ($self->{'type'} eq 'assesscalc') {
2299: $row_html.='<td>'.$self->format_html_rowlabel($rowlabel).'</td>';
2300: }
2301: #
2302: my $shown_cells = 0;
2303: foreach my $cell (@rowdata) {
2304: my $value = $cell->{'value'};
2305: my $formula = $cell->{'formula'};
2306: my $cellname = $cell->{'name'};
2307: #
2308: my $bgcolor;
2309: if ($shown_cells && ($shown_cells/5 == int($shown_cells/5))) {
2310: $bgcolor = $defaultbg.'99';
2311: } else {
2312: $bgcolor = $defaultbg.'DD';
2313: }
2314: $bgcolor='#FFDDDD' if ($shown_cells < $num_uneditable);
2315: #
2316: $row_html.='<td bgcolor='.$bgcolor.'>';
2317: if ($requester_is_student || $shown_cells < $num_uneditable) {
2318: $row_html .= &html_uneditable_cell($cell,$bgcolor);
2319: } else {
2320: $row_html .= &html_editable_cell($cell,$bgcolor);
2321: }
2322: $row_html.='</td>';
2323: $shown_cells++;
2324: }
2325: if ($row_html) {
2326: if ($rows_output % 25 == 0) {
2327: $r->print("</table>\n<br>\n");
2328: $r->rflush();
2329: $r->print('<table border=2>'.
2330: '<tr><td> <td>'.$row_type.'</td>'.
2331: '<td>'.
2332: join('</td><td>',
2333: (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
2334: 'abcdefghijklmnopqrstuvwxyz'))).
2335: "</td></tr>\n");
2336: }
2337: $rows_output++;
2338: $r->print($row_html);
2339: }
2340: }
2341: #
2342: $r->print('</table>');
2343: #
2344: # Debugging code (be sure to uncomment errorlog code in safe space):
2345: #
2346: # $r->print("\n<pre>");
2347: # $r->print(&geterrorlog($self));
2348: # $r->print("\n</pre>");
2349: return 1;
2350: }
2351:
2352: ############################################
2353: ## csv output routines ##
2354: ############################################
2355: sub outsheet_csv {
2356: my $self = shift;
2357: my ($r) = @_;
2358: my $csvdata = '';
2359: my @Values;
2360: ####################################
2361: # Prepare to output rows
2362: ####################################
2363: my @Rows = $self->sort_indicies();
2364: #
2365: # Loop through the rows and output them one at a time
2366: my $rows_output=0;
2367: foreach my $rownum (@Rows) {
2368: my ($rowlabel,@rowdata) = $self->get_row($rownum);
2369: next if ($rowlabel =~ /^\s*$/);
2370: push (@Values,$self->format_csv_rowlabel($rowlabel));
2371: foreach my $cell (@rowdata) {
2372: push (@Values,'"'.$cell->{'value'}.'"');
2373: }
2374: $csvdata.= join(',',@Values)."\n";
2375: @Values = ();
2376: }
2377: #
2378: # Write the CSV data to a file and serve up a link
2379: #
2380: my $filename = '/prtspool/'.
2381: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
2382: time.'_'.rand(1000000000).'.csv';
2383: my $file;
2384: unless ($file = Apache::File->new('>'.'/home/httpd'.$filename)) {
2385: $r->log_error("Couldn't open $filename for output $!");
2386: $r->print("Problems occured in writing the csv file. ".
2387: "This error has been logged. ".
2388: "Please alert your LON-CAPA administrator.");
2389: $r->print("<pre>\n".$csvdata."</pre>\n");
2390: return 0;
2391: }
2392: print $file $csvdata;
2393: close($file);
2394: $r->print('<br /><br />'.
2395: '<a href="'.$filename.'">Your CSV spreadsheet.</a>'."\n");
2396: #
2397: return 1;
2398: }
2399:
2400: ############################################
2401: ## Excel output routines ##
2402: ############################################
2403: sub outsheet_recursive_excel {
2404: my $self = shift;
2405: my ($r) = @_;
2406: my $c = $r->connection;
2407: return undef if ($self->{'type'} ne 'classcalc');
2408: my ($workbook,$filename) = $self->create_excel_spreadsheet($r);
2409: return undef if (! defined($workbook));
2410: #
2411: # Create main worksheet
2412: my $main_worksheet = $workbook->addworksheet('main');
2413: #
2414: # Figure out who the students are
2415: my %f=$self->formulas();
2416: my $count = 0;
2417: $r->print(<<END);
2418: <p>
2419: Compiling Excel Workbook with a worksheet for each student.
2420: </p><p>
2421: This operation may take longer than a complete recalculation of the
2422: spreadsheet.
2423: </p><p>
2424: To abort this operation, hit the stop button on your browser.
2425: </p><p>
2426: A link to the spreadsheet will be available at the end of this process.
2427: </p>
2428: <p>
2429: END
2430: $r->rflush();
2431: my $starttime = time;
2432: foreach my $rownum ($self->sort_indicies()) {
2433: $count++;
2434: my ($sname,$sdom) = split(':',$f{'A'.$rownum});
2435: my $student_excel_worksheet=$workbook->addworksheet($sname.'@'.$sdom);
2436: # Create a new spreadsheet
2437: my $studentsheet = &Apache::lonspreadsheet::Spreadsheet->new
2438: ($sname,$sdom,'studentcalc',undef);
2439: # Read in the spreadsheet definition
2440: $studentsheet->update_student_sheet($r,$c);
2441: # Stuff the sheet into excel
2442: $studentsheet->export_sheet_as_excel($student_excel_worksheet);
2443: my $totaltime = int((time - $starttime) / $count * $self->{'maxrow'});
2444: my $timeleft = int((time - $starttime) / $count * ($self->{'maxrow'} - $count));
2445: if ($count % 5 == 0) {
2446: $r->print($count.' students completed.'.
2447: ' Time remaining: '.$timeleft.' sec. '.
2448: ' Estimated total time: '.$totaltime." sec <br />\n");
2449: $r->rflush();
2450: }
2451: if(defined($c) && ($c->aborted())) {
2452: last;
2453: }
2454: }
2455: #
2456: if(! $c->aborted() ) {
2457: $r->print('All students spreadsheets completed!<br />');
2458: $r->rflush();
2459: #
2460: # &export_sheet_as_excel fills $worksheet with the data from $sheet
2461: $self->export_sheet_as_excel($main_worksheet);
2462: #
2463: $workbook->close();
2464: # Okay, the spreadsheet is taken care of, so give the user a link.
2465: $r->print('<br /><br />'.
2466: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
2467: } else {
2468: $workbook->close(); # Not sure how necessary this is.
2469: #unlink('/home/httpd'.$filename); # No need to keep this around?
2470: }
2471: return 1;
2472: }
2473:
2474: sub outsheet_excel {
2475: my $self = shift;
2476: my ($r) = @_;
2477: my ($workbook,$filename) = $self->create_excel_spreadsheet($r);
2478: return undef if (! defined($workbook));
2479: my $sheetname;
2480: if ($self->{'type'} eq 'classcalc') {
2481: $sheetname = 'Main';
2482: } elsif ($self->{'type'} eq 'studentcalc') {
2483: $sheetname = $self->{'uname'}.'@'.$self->{'udom'};
2484: } elsif ($self->{'type'} eq 'assesscalc') {
2485: $sheetname = $self->{'uname'}.'@'.$self->{'udom'}.' assessment';
2486: }
2487: my $worksheet = $workbook->addworksheet($sheetname);
2488: #
2489: # &export_sheet_as_excel fills $worksheet with the data from $sheet
2490: $self->export_sheet_as_excel($worksheet);
2491: #
2492: $workbook->close();
2493: # Okay, the spreadsheet is taken care of, so give the user a link.
2494: $r->print('<br /><br />'.
2495: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
2496: return 1;
2497: }
2498:
2499: sub create_excel_spreadsheet {
2500: my $self = shift;
2501: my ($r) = @_;
2502: my $filename = '/prtspool/'.
2503: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
2504: time.'_'.rand(1000000000).'.xls';
2505: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
2506: if (! defined($workbook)) {
2507: $r->log_error("Error creating excel spreadsheet $filename: $!");
2508: $r->print("Problems creating new Excel file. ".
2509: "This error has been logged. ".
2510: "Please alert your LON-CAPA administrator");
2511: return undef;
2512: }
2513: #
2514: # The excel spreadsheet stores temporary data in files, then put them
2515: # together. If needed we should be able to disable this (memory only).
2516: # The temporary directory must be specified before calling 'addworksheet'.
2517: # File::Temp is used to determine the temporary directory.
2518: $workbook->set_tempdir('/home/httpd/perl/tmp');
2519: #
2520: # Determine the name to give the worksheet
2521: return ($workbook,$filename);
2522: }
2523:
2524: sub export_sheet_as_excel {
2525: my $self = shift;
2526: my $worksheet = shift;
2527: #
2528: my $rows_output = 0;
2529: my $cols_output = 0;
2530: ####################################
2531: # Write an identifying row #
2532: ####################################
2533: my @Headerinfo = ($self->{'coursedesc'});
2534: my $title = $self->gettitle();
2535: $cols_output = 0;
2536: if (defined($title)) {
2537: $worksheet->write($rows_output++,$cols_output++,$title);
2538: }
2539: ####################################
2540: # Write the summary/export row #
2541: ####################################
2542: my ($rowlabel,@rowdata) = &get_row($self,'0');
2543: my $label = &format_excel_rowlabel($self,$rowlabel);
2544: $cols_output = 0;
2545: $worksheet->write($rows_output,$cols_output++,$label);
2546: foreach my $cell (@rowdata) {
2547: $worksheet->write($rows_output,$cols_output++,$cell->{'value'});
2548: }
2549: $rows_output+= 2; # Skip a row, just for fun
2550: ####################################
2551: # Prepare to output rows
2552: ####################################
2553: my @Rows = &sort_indicies($self);
2554: #
2555: # Loop through the rows and output them one at a time
2556: foreach my $rownum (@Rows) {
2557: my ($rowlabel,@rowdata) = &get_row($self,$rownum);
2558: next if ($rowlabel =~ /^[\s]*$/);
2559: $cols_output = 0;
2560: my $label = &format_excel_rowlabel($self,$rowlabel);
2561: if ( ! $ENV{'form.showall'} &&
2562: $self->{'type'} =~ /^(studentcalc|classcalc)$/) {
2563: my $row_is_empty = 1;
2564: foreach my $cell (@rowdata) {
2565: if ($cell->{'value'} !~ /^\s*$/) {
2566: $row_is_empty = 0;
2567: last;
2568: }
2569: }
2570: next if ($row_is_empty);
2571: }
2572: $worksheet->write($rows_output,$cols_output++,$rownum);
2573: $worksheet->write($rows_output,$cols_output++,$label);
2574: if (ref($label)) {
2575: $cols_output = (scalar(@$label));
2576: }
2577: foreach my $cell (@rowdata) {
2578: $worksheet->write($rows_output,$cols_output++,$cell->{'value'});
2579: }
2580: $rows_output++;
2581: }
2582: return;
2583: }
2584:
2585: ############################################
2586: ## XML output routines ##
2587: ############################################
2588: sub outsheet_xml {
2589: my $self = shift;
2590: my ($r) = @_;
2591: ## Someday XML
2592: ## Will be rendered for the user
2593: ## But not on this day
2594: }
2595:
2596: ##
2597: ## Outsheet - calls other outsheet_* functions
2598: ##
2599: sub outsheet {
2600: my $self = shift;
2601: my ($r)=@_;
2602: if (! exists($ENV{'form.output'})) {
2603: $ENV{'form.output'} = 'HTML';
2604: }
2605: if (lc($ENV{'form.output'}) eq 'csv') {
2606: $self->outsheet_csv($r);
2607: } elsif (lc($ENV{'form.output'}) eq 'excel') {
2608: $self->outsheet_excel($r);
2609: } elsif (lc($ENV{'form.output'}) eq 'recursive excel') {
2610: $self->outsheet_recursive_excel($r);
2611: # } elsif (lc($ENV{'form.output'}) eq 'xml' ) {
2612: # $self->outsheet_xml($r);
2613: } else {
2614: $self->outsheet_html($r);
2615: }
2616: }
2617:
2618: #
2619: # othersheets: Returns the list of other spreadsheets available
2620: #
2621: sub othersheets {
2622: my $self = shift;
2623: my ($stype)=@_;
2624: $stype = $self->{'type'} if (! defined($stype));
2625: #
2626: my $cnum = $self->{'cnum'};
2627: my $cdom = $self->{'cdom'};
2628: my $chome = $self->{'chome'};
2629: #
2630: my @alternatives=();
2631: my %results=&Apache::lonnet::dump($stype.'_spreadsheets',$cdom,$cnum);
2632: my ($tmp) = keys(%results);
2633: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
2634: @alternatives = sort (keys(%results));
2635: }
2636: return @alternatives;
2637: }
2638:
2639: #
2640: # Parse a spreadsheet
2641: #
2642: sub parse_sheet {
2643: # $sheetxml is a scalar reference or a scalar
2644: my ($sheetxml) = @_;
2645: if (! ref($sheetxml)) {
2646: my $tmp = $sheetxml;
2647: $sheetxml = \$tmp;
2648: }
2649: my %f;
2650: my $parser=HTML::TokeParser->new($sheetxml);
2651: my $token;
2652: while ($token=$parser->get_token) {
2653: if ($token->[0] eq 'S') {
2654: if ($token->[1] eq 'field') {
2655: $f{$token->[2]->{'col'}.$token->[2]->{'row'}}=
2656: $parser->get_text('/field');
2657: }
2658: if ($token->[1] eq 'template') {
2659: $f{'template_'.$token->[2]->{'col'}}=
2660: $parser->get_text('/template');
2661: }
2662: }
2663: }
2664: return \%f;
2665: }
2666:
2667: sub readsheet {
2668: my $self = shift;
2669: my ($fn)=@_;
2670: #
2671: my $stype = $self->{'type'};
2672: my $cnum = $self->{'cnum'};
2673: my $cdom = $self->{'cdom'};
2674: my $chome = $self->{'chome'};
2675: #
2676: if (! defined($fn)) {
2677: # There is no filename. Look for defaults in course and global, cache
2678: unless ($fn=$defaultsheets{$cnum.'_'.$cdom.'_'.$stype}) {
2679: my %tmphash = &Apache::lonnet::get('environment',
2680: ['spreadsheet_default_'.$stype],
2681: $cdom,$cnum);
2682: my ($tmp) = keys(%tmphash);
2683: if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
2684: $fn = 'default_'.$stype;
2685: } else {
2686: $fn = $tmphash{'spreadsheet_default_'.$stype};
2687: }
2688: unless (($fn) && ($fn!~/^error\:/)) {
2689: $fn='default_'.$stype;
2690: }
2691: $defaultsheets{$cnum.'_'.$cdom.'_'.$stype}=$fn;
2692: }
2693: }
2694: # $fn now has a value
2695: $self->{'filename'} = $fn;
2696: # see if sheet is cached
2697: if (exists($spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn})) {
2698:
2699: my %tmp = split(/___;___/,
2700: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn});
2701: $self->formulas(\%tmp);
2702: } else {
2703: # Not cached, need to read
2704: my %f=();
2705: if ($fn=~/^default\_/) {
2706: my $sheetxml='';
2707: my $fh;
2708: my $dfn=$fn;
2709: $dfn=~s/\_/\./g;
2710: if ($fh=Apache::File->new($includedir.'/'.$dfn)) {
2711: $sheetxml=join('',<$fh>);
2712: } else {
2713: # $sheetxml='<field row="0" col="A">"Error"</field>';
2714: $sheetxml='<field row="0" col="A"></field>';
2715: }
2716: %f=%{&parse_sheet(\$sheetxml)};
2717: } elsif($fn=~/\/*\.spreadsheet$/) {
2718: my $sheetxml=&Apache::lonnet::getfile
2719: (&Apache::lonnet::filelocation('',$fn));
2720: if ($sheetxml == -1) {
2721: $sheetxml='<field row="0" col="A">"Error loading spreadsheet '
2722: .$fn.'"</field>';
2723: }
2724: %f=%{&parse_sheet(\$sheetxml)};
2725: } else {
2726: my %tmphash = &Apache::lonnet::dump($fn,$cdom,$cnum);
2727: my ($tmp) = keys(%tmphash);
2728: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
2729: foreach (keys(%tmphash)) {
2730: $f{$_}=$tmphash{$_};
2731: }
2732: } else {
2733: # Unable to grab the specified spreadsheet,
2734: # so we get the default ones instead.
2735: $fn = 'default_'.$stype;
2736: $self->{'filename'} = $fn;
2737: my $dfn = $fn;
2738: $dfn =~ s/\_/\./g;
2739: my $sheetxml;
2740: if (my $fh=Apache::File->new($includedir.'/'.$dfn)) {
2741: $sheetxml = join('',<$fh>);
2742: } else {
2743: $sheetxml='<field row="0" col="A">'.
2744: '"Unable to load spreadsheet"</field>';
2745: }
2746: %f=%{&parse_sheet(\$sheetxml)};
2747: }
2748: }
2749: # Cache and set
2750: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
2751: $self->formulas(\%f);
2752: }
2753: }
2754:
2755: # ------------------------------------------------------------ Save spreadsheet
2756: sub writesheet {
2757: my $self = shift;
2758: my ($makedef)=@_;
2759: my $cid=$self->{'cid'};
2760: if (&Apache::lonnet::allowed('opa',$cid)) {
2761: my %f=$self->formulas();
2762: my $stype= $self->{'type'};
2763: my $cnum = $self->{'cnum'};
2764: my $cdom = $self->{'cdom'};
2765: my $chome= $self->{'chome'};
2766: my $fn = $self->{'filename'};
2767: # Cache new sheet
2768: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
2769: # Write sheet
2770: foreach (keys(%f)) {
2771: delete($f{$_}) if ($f{$_} eq 'import');
2772: }
2773: my $reply = &Apache::lonnet::put($fn,\%f,$cdom,$cnum);
2774: if ($reply eq 'ok') {
2775: $reply = &Apache::lonnet::put($stype.'_spreadsheets',
2776: {$fn => $ENV{'user.name'}.'@'.$ENV{'user.domain'}},
2777: $cdom,$cnum);
2778: if ($reply eq 'ok') {
2779: if ($makedef) {
2780: $reply = &Apache::lonnet::put('environment',
2781: {'spreadsheet_default_'.$stype => $fn },
2782: $cdom,$cnum);
2783: if ($reply eq 'ok' &&
2784: ($self->{'type'} eq 'studentcalc' ||
2785: $self->{'type'} eq 'assesscalc')) {
2786: # Expire the spreadsheets of the other students.
2787: &Apache::lonnet::expirespread('','','studentcalc','');
2788: }
2789: return $reply;
2790: }
2791: return $reply;
2792: }
2793: return $reply;
2794: }
2795: return $reply;
2796: }
2797: return 'unauthorized';
2798: }
2799:
2800: # ----------------------------------------------- Make a temp copy of the sheet
2801: # "Modified workcopy" - interactive only
2802: #
2803: sub tmpwrite {
2804: my $self = shift;
2805: my $fn=$ENV{'user.name'}.'_'.
2806: $ENV{'user.domain'}.'_spreadsheet_'.$self->{'usymb'}.'_'.
2807: $self->{'filename'};
2808: $fn=~s/\W/\_/g;
2809: $fn=$Apache::lonnet::tmpdir.$fn.'.tmp';
2810: my $fh;
2811: if ($fh=Apache::File->new('>'.$fn)) {
2812: my %f = $self->formulas();
2813: while( my ($cell,$formula) = each(%f)) {
2814: print $fh &Apache::lonnet::escape($cell)."=".&Apache::lonnet::escape($formula)."\n";
2815: }
2816: }
2817: }
2818:
2819:
2820: # ---------------------------------------------------------- Read the temp copy
2821: sub tmpread {
2822: my $self = shift;
2823: my ($nfield,$nform)=@_;
2824: my $fn=$ENV{'user.name'}.'_'.
2825: $ENV{'user.domain'}.'_spreadsheet_'.$self->{'usymb'}.'_'.
2826: $self->{'filename'};
2827: $fn=~s/\W/\_/g;
2828: $fn=$Apache::lonnet::tmpdir.$fn.'.tmp';
2829: my $fh;
2830: my %fo=();
2831: my $countrows=0;
2832: if ($fh=Apache::File->new($fn)) {
2833: while (<$fh>) {
2834: chomp;
2835: my ($cell,$formula) = split(/=/);
2836: $cell = &Apache::lonnet::unescape($cell);
2837: $formula = &Apache::lonnet::unescape($formula);
2838: $fo{$cell} = $formula;
2839: }
2840: }
2841: if ($nform eq 'changesheet') {
2842: $fo{'A'.$nfield}=(split(/__&&&\__/,$fo{'A'.$nfield}))[0];
2843: unless ($ENV{'form.sel_'.$nfield} eq 'Default') {
2844: $fo{'A'.$nfield}.='__&&&__'.$ENV{'form.sel_'.$nfield};
2845: }
2846: } else {
2847: if ($nfield) { $fo{$nfield}=$nform; }
2848: }
2849: $self->formulas(\%fo);
2850: }
2851:
2852: ##################################################################
2853: ## Row label formatting routines ##
2854: ##################################################################
2855: sub format_html_rowlabel {
2856: my $self = shift;
2857: my $rowlabel = shift;
2858: return '' if ($rowlabel eq '');
2859: my ($type,$labeldata) = split(':',$rowlabel,2);
2860: my $result = '';
2861: if ($type eq 'symb') {
2862: my ($symb,$mapid,$resid,$title,$ufn) = split(':',$labeldata);
2863: $ufn = 'default' if (!defined($ufn) || $ufn eq '');
2864: $ufn = &Apache::lonnet::unescape($ufn);
2865: $symb = &Apache::lonnet::unescape($symb);
2866: $title = &Apache::lonnet::unescape($title);
2867: $result = '<a href="/adm/assesscalc?usymb='.$symb.
2868: '&uname='.$self->{'uname'}.'&udom='.$self->{'udom'}.
2869: '&ufn='.$ufn.
2870: '&mapid='.$mapid.'&resid='.$resid.'">'.$title.'</a>';
2871: } elsif ($type eq 'student') {
2872: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
2873: if ($fullname =~ /^\s*$/) {
2874: $fullname = $sname.'@'.$sdom;
2875: }
2876: $result ='<a href="/adm/studentcalc?uname='.$sname.
2877: '&udom='.$sdom.'">';
2878: $result.=$section.' '.$id." ".$fullname.'</a>';
2879: } elsif ($type eq 'parameter') {
2880: $result = $labeldata;
2881: } else {
2882: $result = '<b><font size=+1>'.$rowlabel.'</font></b>';
2883: }
2884: return $result;
2885: }
2886:
2887: sub format_csv_rowlabel {
2888: my $self = shift;
2889: my $rowlabel = shift;
2890: return '' if ($rowlabel eq '');
2891: my ($type,$labeldata) = split(':',$rowlabel,2);
2892: my $result = '';
2893: if ($type eq 'symb') {
2894: my ($symb,$mapid,$resid,$title,$ufn) = split(':',$labeldata);
2895: $ufn = &Apache::lonnet::unescape($ufn);
2896: $symb = &Apache::lonnet::unescape($symb);
2897: $title = &Apache::lonnet::unescape($title);
2898: $result = $title;
2899: } elsif ($type eq 'student') {
2900: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
2901: $result = join('","',($sname,$sdom,$fullname,$section,$id));
2902: } elsif ($type eq 'parameter') {
2903: $labeldata =~ s/<br>/ /g;
2904: $result = $labeldata;
2905: } else {
2906: $result = $rowlabel;
2907: }
2908: return '"'.$result.'"';
2909: }
2910:
2911: sub format_excel_rowlabel {
2912: my $self = shift;
2913: my $rowlabel = shift;
2914: return '' if ($rowlabel eq '');
2915: my ($type,$labeldata) = split(':',$rowlabel,2);
2916: my $result = '';
2917: if ($type eq 'symb') {
2918: my ($symb,$mapid,$resid,$title,$ufn) = split(':',$labeldata);
2919: $ufn = &Apache::lonnet::unescape($ufn);
2920: $symb = &Apache::lonnet::unescape($symb);
2921: $title = &Apache::lonnet::unescape($title);
2922: $result = $title;
2923: } elsif ($type eq 'student') {
2924: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
2925: $section = '' if (! defined($section));
2926: $id = '' if (! defined($id));
2927: my @Data = ($sname,$sdom,$fullname,$section,$id);
2928: $result = \@Data;
2929: } elsif ($type eq 'parameter') {
2930: $labeldata =~ s/<br>/ /g;
2931: $result = $labeldata;
2932: } else {
2933: $result = $rowlabel;
2934: }
2935: return $result;
2936: }
2937:
2938: # ---------------------------------------------- Update rows for course listing
2939: sub updateclasssheet {
2940: my $self = shift;
2941: my $cnum =$self->{'cnum'};
2942: my $cdom =$self->{'cdom'};
2943: my $cid =$self->{'cid'};
2944: my $chome =$self->{'chome'};
2945: #
2946: %Section = ();
2947: #
2948: # Read class list and row labels
2949: my $classlist = &Apache::loncoursedata::get_classlist();
2950: if (! defined($classlist)) {
2951: return 'Could not access course classlist';
2952: }
2953: #
2954: my %currentlist=();
2955: foreach my $student (keys(%$classlist)) {
2956: my ($studentDomain,$studentName,$end,$start,$id,$studentSection,
2957: $fullname,$status) = @{$classlist->{$student}};
2958: $Section{$studentName.':'.$studentDomain} = $studentSection;
2959: if ($ENV{'form.Status'} eq $status || $ENV{'form.Status'} eq 'Any') {
2960: $currentlist{$student}=join(':',('student',$studentName,
2961: $studentDomain,$fullname,
2962: $studentSection,$id));
2963: }
2964: }
2965: #
2966: # Find discrepancies between the course row table and this
2967: #
2968: my %f=$self->formulas();
2969: my $changed=0;
2970: #
2971: $self->{'maxrow'}=0;
2972: my %existing=();
2973: #
2974: # Now obsolete rows
2975: foreach my $rownum ($self->rows()) {
2976: my $cell = 'A'.$rownum;
2977: if ($rownum > $self->{'maxrow'}) {
2978: $self->{'maxrow'}= $rownum;
2979: }
2980: $existing{$f{$cell}}=1;
2981: if (! defined($currentlist{$f{$cell}}) && ($f{$cell}=~/^(~~~|---)/)) {
2982: $f{$cell}='!!! Obsolete';
2983: $changed=1;
2984: }
2985: }
2986: #
2987: # New and unknown keys
2988: foreach my $student (sort keys(%currentlist)) {
2989: next if ($existing{$student});
2990: $changed=1;
2991: $self->{'maxrow'}++;
2992: $f{'A'.$self->{'maxrow'}}=$student;
2993: }
2994: $self->formulas(\%f) if ($changed);
2995: #
2996: $self->rowlabels(\%currentlist);
2997: }
2998:
2999: # ----------------------------------- Update rows for student and assess sheets
3000: sub get_student_rowlabels {
3001: my $self = shift;
3002: #
3003: my %course_db;
3004: #
3005: my $stype = $self->{'type'};
3006: my $uname = $self->{'uname'};
3007: my $udom = $self->{'udom'};
3008: #
3009: $self->{'rowlabel'} = {};
3010: #
3011: my $identifier =$self->{'coursefilename'}.'_'.$stype;
3012: if (exists($rowlabel_cache{$identifier})) {
3013: my %tmp = split(/___;___/,$rowlabel_cache{$identifier});
3014: $self->rowlabels(\%tmp);
3015: } else {
3016: # Get the data and store it in the cache
3017: # Tie hash
3018: tie(%course_db,'GDBM_File',$self->{'coursefilename'}.'.db',
3019: &GDBM_READER(),0640);
3020: if (! tied(%course_db)) {
3021: return 'Could not access course data';
3022: }
3023: #
3024: my %assesslist = ();
3025: foreach ('Feedback','Evaluation','Tutoring','Discussion') {
3026: my $symb = '_'.lc($_);
3027: $assesslist{$symb} = join(':',('symb',$symb,0,0,
3028: &Apache::lonnet::escape($_)));
3029: }
3030: #
3031: while (my ($key,$srcf) = each(%course_db)) {
3032: next if ($key !~ /^src_(\d+)\.(\d+)$/);
3033: my $mapid = $1;
3034: my $resid = $2;
3035: my $id = $mapid.'.'.$resid;
3036: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
3037: my $symb=
3038: &Apache::lonnet::declutter($course_db{'map_id_'.$mapid}).
3039: '___'.$resid.'___'.&Apache::lonnet::declutter($srcf);
3040: $assesslist{$symb} ='symb:'.&Apache::lonnet::escape($symb).':'
3041: .$mapid.':'.$resid.':'.
3042: &Apache::lonnet::escape($course_db{'title_'.$id});
3043: }
3044: }
3045: untie(%course_db);
3046: # Store away the data
3047: $self->{'rowlabel'} = \%assesslist;
3048: $rowlabel_cache{$identifier}=join('___;___',%{$self->{'rowlabel'}});
3049: }
3050:
3051: }
3052:
3053: sub get_assess_rowlabels {
3054: my $self = shift;
3055: #
3056: my %course_db;
3057: #
3058: my $stype = $self->{'type'};
3059: my $uname = $self->{'uname'};
3060: my $udom = $self->{'udom'};
3061: my $usymb = $self->{'usymb'};
3062: #
3063: $self->rowlabels({});
3064: my $identifier =$self->{'coursefilename'}.'_'.$stype.'_'.$usymb;
3065: #
3066: if (exists($rowlabel_cache{$identifier})) {
3067: my %tmp = split('___;___',$rowlabel_cache{$identifier});
3068: $self->rowlabels(\%tmp);
3069: } else {
3070: # Get the data and store it in the cache
3071: # Tie hash
3072: tie(%course_db,'GDBM_File',$self->{'coursefilename'}.'.db',
3073: &GDBM_READER(),0640);
3074: if (! tied(%course_db)) {
3075: return 'Could not access course data';
3076: }
3077: #
3078: my %parameter_labels=
3079: ('timestamp' =>
3080: 'parameter:Timestamp of Last Transaction<br>timestamp',
3081: 'subnumber' =>
3082: 'parameter:Number of Submissions<br>subnumber',
3083: 'tutornumber' =>
3084: 'parameter:Number of Tutor Responses<br>tutornumber',
3085: 'totalpoints' =>
3086: 'parameter:Total Points Granted<br>totalpoints');
3087: while (my ($key,$srcf) = each(%course_db)) {
3088: next if ($key !~ /^src_(\d+)\.(\d+)$/);
3089: my $mapid = $1;
3090: my $resid = $2;
3091: my $id = $mapid.'.'.$resid;
3092: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
3093: # Loop through the metadata for this key
3094: my @Metadata = split(/,/,
3095: &Apache::lonnet::metadata($srcf,'keys'));
3096: foreach my $key (@Metadata) {
3097: next if ($key !~ /^(stores|parameter)_/);
3098: my $display=
3099: &Apache::lonnet::metadata($srcf,$key.'.display');
3100: unless ($display) {
3101: $display.=
3102: &Apache::lonnet::metadata($srcf,$key.'.name');
3103: }
3104: $display.='<br>'.$key;
3105: $parameter_labels{$key}='parameter:'.$display;
3106: } # end of foreach
3107: }
3108: }
3109: untie(%course_db);
3110: # Store away the results
3111: $self->rowlabels(\%parameter_labels);
3112: $rowlabel_cache{$identifier}=join('___;___',%parameter_labels);
3113: }
3114: }
3115:
3116: sub updatestudentassesssheet {
3117: my $self = shift;
3118: if ($self->{'type'} eq 'studentcalc') {
3119: $self->get_student_rowlabels();
3120: } else {
3121: $self->get_assess_rowlabels();
3122: }
3123: # Determine if any of the information has changed
3124: my %f=$self->formulas();
3125: my $changed=0;
3126: $self->{'maxrow'} = 0;
3127: my %existing=();
3128: # Now obsolete rows
3129: foreach my $rownum ($self->rows()) {
3130: my $cell = 'A'.$rownum;
3131: my $formula = $f{$cell};
3132: $self->{'maxrow'} = $rownum if ($rownum > $self->{'maxrow'});
3133: my ($usy,$ufn)=split(/__&&&\__/,$formula);
3134: $existing{$usy}=1;
3135: if ( ! exists($self->{'rowlabel'}->{$usy}) ||
3136: ! defined($self->{'rowlabel'}->{$usy}) ||
3137: ($formula =~ /^(~~~|---)/) ||
3138: ($formula =~ /^\s*$/)) {
3139: $f{$cell}='!!! Obsolete';
3140: $changed=1;
3141: }
3142: }
3143: # New and unknown keys
3144: my %keys_hates_me = $self->rowlabels();
3145: foreach (keys(%keys_hates_me)) {
3146: unless ($existing{$_}) {
3147: $changed=1;
3148: $self->{'maxrow'}++;
3149: $f{'A'.$self->{'maxrow'}}=$_;
3150: }
3151: }
3152: $self->formulas(\%f) if ($changed);
3153: # $self->dump_formulas_to_log();
3154: }
3155:
3156: # ------------------------------------------------ Load data for one assessment
3157: sub loadstudent{
3158: my $self = shift;
3159: my ($r,$c)=@_;
3160: my %constants = ();
3161: my %formulas = $self->formulas();
3162: $cachedassess = $self->{'uname'}.':'.$self->{'udom'};
3163: # Get ALL the student preformance data
3164: my @tmp = &Apache::loncoursedata::get_current_state($self->{'uname'},
3165: $self->{'udom'},
3166: undef,
3167: $self->{'cid'});
3168: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
3169: %cachedstores = @tmp;
3170: }
3171: undef @tmp;
3172: # debugging code
3173: # $self->dump_hash_to_log(\%cachedstores);
3174: #
3175: my @assessdata=();
3176: foreach my $row ($self->rows()) {
3177: my $cell = 'A'.$row;
3178: my $value = $formulas{$cell};
3179: if(defined($c) && ($c->aborted())) {
3180: last;
3181: }
3182: next if ($value =~ /^[!~-]/);
3183: my ($usy,$ufn)=split(/__&&&\__/,$value);
3184: @assessdata=$self->exportsheet($self->{'uname'},
3185: $self->{'udom'},
3186: 'assesscalc',$usy,$ufn,$r);
3187: my $index=0;
3188: foreach my $col ('A','B','C','D','E','F','G','H','I','J','K','L','M',
3189: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
3190: if (defined($assessdata[$index])) {
3191: if ($assessdata[$index]=~/\D/) {
3192: $constants{$col.$row}="'".$assessdata[$index]."'";
3193: } else {
3194: $constants{$col.$row}=$assessdata[$index];
3195: }
3196: $formulas{$col.$row}='import' if ($col ne 'A');
3197: }
3198: $index++;
3199: }
3200: }
3201: $cachedassess='';
3202: undef %cachedstores;
3203: $self->formulas(\%formulas);
3204: $self->constants(\%constants);
3205: }
3206:
3207: # --------------------------------------------------- Load Course Sheet
3208: #
3209: sub loadcourse {
3210: my $self = shift;
3211: my ($r,$c)=@_;
3212: #
3213: my %constants=();
3214: my %formulas=$self->formulas();
3215: #
3216: my $total=0;
3217: foreach ($self->rows()) {
3218: $total++ if ($formulas{'A'.$_} !~ /^[!~-]/);
3219: }
3220:
3221: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,
3222: 'Spreadsheet Status','Spreadsheet Calculation Progress', $total);
3223: &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
3224: 'Processing Course Assessment Data');
3225:
3226: # It would be nice to load in the classlist and assessment info at this
3227: # point, before attacking the student spreadsheets.
3228: foreach my $row ($self->rows()) {
3229: if(defined($c) && ($c->aborted())) {
3230: last;
3231: }
3232: my $cell = 'A'.$row;
3233: next if ($formulas{$cell}=~/^[\!\~\-]/);
3234: my ($sname,$sdom) = split(':',$formulas{$cell});
3235: my $started = time;
3236: my @studentdata=$self->exportsheet($sname,$sdom,'studentcalc',
3237: undef,undef,$r);
3238: undef %userrdatas;
3239: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
3240: 'last student');
3241: my $index=0;
3242: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
3243: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
3244: if (defined($studentdata[$index])) {
3245: my $col=$_;
3246: if ($studentdata[$index]=~/\D/) {
3247: $constants{$col.$row}="'".$studentdata[$index]."'";
3248: } else {
3249: $constants{$col.$row}=$studentdata[$index];
3250: }
3251: unless ($col eq 'A') {
3252: $formulas{$col.$row}='import';
3253: }
3254: }
3255: $index++;
3256: }
3257: }
3258: $self->formulas(\%formulas);
3259: $self->constants(\%constants);
3260: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
3261: }
3262:
3263: # ------------------------------------------------ Load data for one assessment
3264: #
3265: sub loadassessment {
3266: my $self = shift;
3267: my ($r,$c)=@_;
3268:
3269: my $uhome = $self->{'uhome'};
3270: my $uname = $self->{'uname'};
3271: my $udom = $self->{'udom'};
3272: my $symb = $self->{'usymb'};
3273: my $cid = $self->{'cid'};
3274: my $cnum = $self->{'cnum'};
3275: my $cdom = $self->{'cdom'};
3276: my $chome = $self->{'chome'};
3277: my $csec = $self->{'csec'};
3278:
3279: my $namespace;
3280: unless ($namespace=$cid) { return ''; }
3281: # Get stored values
3282: my %returnhash=();
3283: if ($cachedassess eq $uname.':'.$udom) {
3284: #
3285: # get data out of the dumped stores
3286: #
3287: if (exists($cachedstores{$symb})) {
3288: %returnhash = %{$cachedstores{$symb}};
3289: } else {
3290: %returnhash = ();
3291: }
3292: } else {
3293: #
3294: # restore individual
3295: #
3296: %returnhash = &Apache::lonnet::restore($symb,$namespace,$udom,$uname);
3297: }
3298: #
3299: # returnhash now has all stores for this resource
3300: # convert all "_" to "." to be able to use libraries, multiparts, etc
3301: #
3302: # This is dumb. It is also necessary :(
3303: my @oldkeys=keys %returnhash;
3304: #
3305: foreach my $name (@oldkeys) {
3306: my $value=$returnhash{$name};
3307: delete $returnhash{$name};
3308: $name=~s/\_/\./g;
3309: $returnhash{$name}=$value;
3310: }
3311: # initialize coursedata and userdata for this user
3312: undef %courseopt;
3313: undef %useropt;
3314:
3315: my $userprefix=$uname.'_'.$udom.'_';
3316:
3317: unless ($uhome eq 'no_host') {
3318: # Get coursedata
3319: unless ((time-$courserdatas{$cid.'.last_cache'})<240) {
3320: my %Tmp = &Apache::lonnet::dump('resourcedata',$cdom,$cnum);
3321: $courserdatas{$cid}=\%Tmp;
3322: $courserdatas{$cid.'.last_cache'}=time;
3323: }
3324: while (my ($name,$value) = each(%{$courserdatas{$cid}})) {
3325: $courseopt{$userprefix.$name}=$value;
3326: }
3327: # Get userdata (if present)
3328: unless ((time-$userrdatas{$uname.'@'.$udom.'.last_cache'})<240) {
3329: my %Tmp = &Apache::lonnet::dump('resourcedata',$udom,$uname);
3330: $userrdatas{$cid} = \%Tmp;
3331: # Most of the time the user does not have a 'resourcedata.db'
3332: # file. We need to cache that we got nothing instead of bothering
3333: # with requesting it every time.
3334: $userrdatas{$uname.'@'.$udom.'.last_cache'}=time;
3335: }
3336: while (my ($name,$value) = each(%{$userrdatas{$cid}})) {
3337: $useropt{$userprefix.$name}=$value;
3338: }
3339: }
3340: # now courseopt, useropt initialized for this user and course
3341: # (used by parmval)
3342: #
3343: # Load keys for this assessment only
3344: #
3345: my %thisassess=();
3346: my ($symap,$syid,$srcf)=split(/\_\_\_/,$symb);
3347: foreach (split(/\,/,&Apache::lonnet::metadata($srcf,'keys'))) {
3348: $thisassess{$_}=1;
3349: }
3350: #
3351: # Load parameters
3352: #
3353: my %c=();
3354: if (tie(%parmhash,'GDBM_File',
3355: $self->{'coursefilename'}.'_parms.db',&GDBM_READER(),0640)) {
3356: my %f=$self->formulas();
3357: foreach my $row ($self->rows()) {
3358: my $cell = 'A'.$row;
3359: my $formula = $self->formula($cell);
3360: next if ($formula =~/^[\!\~\-]/);
3361: if ($formula =~ /^parameter/) {
3362: if (defined($thisassess{$formula})) {
3363: my $val = &parmval($formula,$symb,$uname,$udom,$csec);
3364: $c{$cell} = $val;
3365: $c{$formula} = $val;
3366: }
3367: } else {
3368: my $ckey=$formula;
3369: $formula=~s/^stores\_/resource\./;
3370: $formula=~s/\_/\./g;
3371: $c{$cell}=$returnhash{$formula};
3372: $c{$ckey}=$returnhash{$formula};
3373: }
3374: }
3375: untie(%parmhash);
3376: }
3377: $self->constants(\%c);
3378: }
3379:
3380:
3381: # =============================================== Update information in a sheet
3382: #
3383: # Add new users or assessments, etc.
3384: #
3385: sub updatesheet {
3386: my $self = shift;
3387: if ($self->{'type'} eq 'classcalc') {
3388: return $self->updateclasssheet();
3389: } else {
3390: return $self->updatestudentassesssheet();
3391: }
3392: }
3393:
3394: # =================================================== Load the rows for a sheet
3395: #
3396: # Import the data for rows
3397: #
3398: sub loadrows {
3399: my $self = shift;
3400: my ($r)=@_;
3401: my $c = $r->connection;
3402: if ($self->{'type'} eq 'classcalc') {
3403: $self->loadcourse($r,$c);
3404: } elsif ($self->{'type'} eq 'studentcalc') {
3405: $self->loadstudent($r,$c);
3406: } else {
3407: $self->loadassessment($r,$c);
3408: }
3409: }
3410:
3411: # ============================================================== Export handler
3412: # exportsheet
3413: # returns the export row for a spreadsheet.
3414: #
3415: sub exportsheet {
3416: my $self = shift;
3417: my ($uname,$udom,$stype,$usymb,$fn,$r)=@_;
3418: my $flag = 0;
3419: $uname = $uname || $self->{'uname'};
3420: $udom = $udom || $self->{'udom'};
3421: $stype = $stype || $self->{'type'};
3422: my @exportarr=();
3423: # This handles the assessment sheets for '_feedback', etc
3424: if (defined($usymb) && ($usymb=~/^\_(\w+)/) &&
3425: (!defined($fn) || $fn eq '')) {
3426: $fn='default_'.$1;
3427: }
3428: #
3429: # Check if cached
3430: #
3431: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3432: my $found='';
3433: if ($Apache::lonspreadsheet::oldsheets{$key}) {
3434: foreach (split(/___&\___/,$Apache::lonspreadsheet::oldsheets{$key})) {
3435: my ($name,$value)=split(/___=___/,$_);
3436: if ($name eq $fn) {
3437: $found=$value;
3438: }
3439: }
3440: }
3441: unless ($found) {
3442: &cachedssheets($self,$uname,$udom);
3443: if ($Apache::lonspreadsheet::oldsheets{$key}) {
3444: foreach (split(/___&\___/,$Apache::lonspreadsheet::oldsheets{$key})) {
3445: my ($name,$value)=split(/___=___/,$_);
3446: if ($name eq $fn) {
3447: $found=$value;
3448: }
3449: }
3450: }
3451: }
3452: #
3453: # Check if still valid
3454: #
3455: if ($found) {
3456: if (&forcedrecalc($uname,$udom,$stype,$usymb)) {
3457: $found='';
3458: }
3459: }
3460: if ($found) {
3461: #
3462: # Return what was cached
3463: #
3464: @exportarr=split(/___;___/,$found);
3465: return @exportarr;
3466: }
3467: #
3468: # Not cached
3469: #
3470: my $newsheet = Apache::lonspreadsheet::Spreadsheet->new($uname,$udom,
3471: $stype,$usymb);
3472: $newsheet->readsheet($fn);
3473: $newsheet->updatesheet();
3474: $newsheet->loadrows($r);
3475: $newsheet->calcsheet();
3476: @exportarr=$newsheet->exportdata();
3477: ##
3478: ## Store now
3479: ##
3480: #
3481: # load in the old value
3482: #
3483: my %currentlystored=();
3484: if ($stype eq 'studentcalc') {
3485: my @tmp = &Apache::lonnet::get('nohist_calculatedsheets',
3486: [$key],
3487: $self->{'cdom'},$self->{'cnum'});
3488: if ($tmp[0]!~/^error/) {
3489: # We only got one key, so we will access it directly.
3490: foreach (split('___&___',$tmp[1])) {
3491: my ($key,$value) = split('___=___',$_);
3492: $key = '' if (! defined($key));
3493: $currentlystored{$key} = $value;
3494: }
3495: }
3496: } else {
3497: my @tmp = &Apache::lonnet::get('nohist_calculatedsheets_'.
3498: $self->{'cid'},[$key],
3499: $self->{'udom'},$self->{'uname'});
3500: if ($tmp[0]!~/^error/) {
3501: # We only got one key, so we will access it directly.
3502: foreach (split('___&___',$tmp[1])) {
3503: my ($key,$value) = split('___=___',$_);
3504: $key = '' if (! defined($key));
3505: $currentlystored{$key} = $value;
3506: }
3507: }
3508: }
3509: #
3510: # Add the new line
3511: #
3512: $currentlystored{$fn}=join('___;___',@exportarr);
3513: #
3514: # Stick everything back together
3515: #
3516: my $newstore='';
3517: foreach (keys(%currentlystored)) {
3518: if ($newstore) { $newstore.='___&___'; }
3519: $newstore.=$_.'___=___'.$currentlystored{$_};
3520: }
3521: my $now=time;
3522: #
3523: # Store away the new value
3524: #
3525: my $timekey = $key.'.time';
3526: if ($stype eq 'studentcalc') {
3527: my $result = &Apache::lonnet::put('nohist_calculatedsheets',
3528: { $key => $newstore,
3529: $timekey => $now },
3530: $self->{'cdom'},
3531: $self->{'cnum'});
3532: } else {
3533: my $result = &Apache::lonnet::put('nohist_calculatedsheets_'.$self->{'cid'},
3534: { $key => $newstore,
3535: $timekey => $now },
3536: $self->{'udom'},
3537: $self->{'uname'});
3538: }
3539: return @exportarr;
3540: }
3541:
3542: 1;
3543:
3544: __END__
3545:
3546:
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