1: # The LearningOnline Network with CAPA
2: # Spreadsheet/Grades Display Handler
3: #
4: # 11/11,11/15,11/27,12/04,12/05,12/06,12/07,
5: # 12/08,12/09,12/11,12/12,12/15,12/16,12/18,12/19,12/30,
6: # 01/01/01,02/01,03/01,19/01,20/01,22/01,
7: # 03/05,03/08,03/10,03/12,03/13,03/15,03/17,
8: # 03/19,03/20,03/21,03/27,04/05,04/09,
9: # 07/09,07/14,07/21 Gerd Kortemeyer
10:
11: package Apache::lonspreadsheet;
12:
13: use strict;
14: use Safe;
15: use Safe::Hole;
16: use Opcode;
17: use Apache::lonnet;
18: use Apache::Constants qw(:common :http);
19: use GDBM_File;
20: use HTML::TokeParser;
21:
22: #
23: # Caches for previously calculated spreadsheets
24: #
25:
26: my %oldsheets;
27: my %loadedcaches;
28: my %expiredates;
29:
30: #
31: # Cache for stores of an individual user
32: #
33:
34: my $cachedassess;
35: my %cachedstores;
36:
37: #
38: # These cache hashes need to be independent of user, resource and course
39: # (user and course can/should be in the keys)
40: #
41:
42: my %spreadsheets;
43: my %courserdatas;
44: my %userrdatas;
45: my %defaultsheets;
46: my %updatedata;
47:
48: #
49: # These global hashes are dependent on user, course and resource,
50: # and need to be initialized every time when a sheet is calculated
51: #
52: my %courseopt;
53: my %useropt;
54: my %parmhash;
55:
56: # Stuff that only the screen handler can know
57:
58: my $includedir;
59: my $tmpdir;
60:
61: # =============================================================================
62: # ===================================== Implements an instance of a spreadsheet
63:
64: sub initsheet {
65: my $safeeval = new Safe(shift);
66: my $safehole = new Safe::Hole;
67: $safeeval->permit("entereval");
68: $safeeval->permit(":base_math");
69: $safeeval->permit("sort");
70: $safeeval->deny(":base_io");
71: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
72: my $code=<<'ENDDEFS';
73: # ---------------------------------------------------- Inside of the safe space
74:
75: #
76: # f: formulas
77: # t: intermediate format (variable references expanded)
78: # v: output values
79: # c: preloaded constants (A-column)
80: # rl: row label
81: # os: other spreadsheets (for student spreadsheet only)
82:
83: undef %v;
84: undef %t;
85: undef %f;
86: undef %c;
87: undef %rl;
88: undef @os;
89:
90: $maxrow=0;
91: $sheettype='';
92:
93: # filename/reference of the sheet
94:
95: $filename='';
96:
97: # user data
98: $uname='';
99: $uhome='';
100: $udom='';
101:
102: # course data
103:
104: $csec='';
105: $chome='';
106: $cnum='';
107: $cdom='';
108: $cid='';
109: $cfn='';
110:
111: # symb
112:
113: $usymb='';
114:
115: sub mask {
116: my ($lower,$upper)=@_;
117:
118: $lower=~/([A-Za-z]|\*)(\d+|\*)/;
119: my $la=$1;
120: my $ld=$2;
121:
122: $upper=~/([A-Za-z]|\*)(\d+|\*)/;
123: my $ua=$1;
124: my $ud=$2;
125: my $alpha='';
126: my $num='';
127:
128: if (($la eq '*') || ($ua eq '*')) {
129: $alpha='[A-Za-z]';
130: } else {
131: if (($la=~/[A-Z]/) && ($ua=~/[A-Z]/) ||
132: ($la=~/[a-z]/) && ($ua=~/[a-z]/)) {
133: $alpha='['.$la.'-'.$ua.']';
134: } else {
135: $alpha='['.$la.'-Za-'.$ua.']';
136: }
137: }
138:
139: if (($ld eq '*') || ($ud eq '*')) {
140: $num='\d+';
141: } else {
142: if (length($ld)!=length($ud)) {
143: $num.='(';
144: map {
145: $num.='['.$_.'-9]';
146: } ($ld=~m/\d/g);
147: if (length($ud)-length($ld)>1) {
148: $num.='|\d{'.(length($ld)+1).','.(length($ud)-1).'}';
149: }
150: $num.='|';
151: map {
152: $num.='[0-'.$_.']';
153: } ($ud=~m/\d/g);
154: $num.=')';
155: } else {
156: my @lda=($ld=~m/\d/g);
157: my @uda=($ud=~m/\d/g);
158: my $i; $j=0; $notdone=1;
159: for ($i=0;($i<=$#lda)&&($notdone);$i++) {
160: if ($lda[$i]==$uda[$i]) {
161: $num.=$lda[$i];
162: $j=$i;
163: } else {
164: $notdone=0;
165: }
166: }
167: if ($j<$#lda-1) {
168: $num.='('.$lda[$j+1];
169: for ($i=$j+2;$i<=$#lda;$i++) {
170: $num.='['.$lda[$i].'-9]';
171: }
172: if ($uda[$j+1]-$lda[$j+1]>1) {
173: $num.='|['.($lda[$j+1]+1).'-'.($uda[$j+1]-1).']\d{'.
174: ($#lda-$j-1).'}';
175: }
176: $num.='|'.$uda[$j+1];
177: for ($i=$j+2;$i<=$#uda;$i++) {
178: $num.='[0-'.$uda[$i].']';
179: }
180: $num.=')';
181: } else {
182: if ($lda[$#lda]!=$uda[$#uda]) {
183: $num.='['.$lda[$#lda].'-'.$uda[$#uda].']';
184: }
185: }
186: }
187: }
188: return '^'.$alpha.$num."\$";
189: }
190:
191: sub NUM {
192: my $mask=mask(@_);
193: my $num=0;
194: map {
195: $num++;
196: } grep /$mask/,keys %v;
197: return $num;
198: }
199:
200: sub BIN {
201: my ($low,$high,$lower,$upper)=@_;
202: my $mask=mask($lower,$upper);
203: my $num=0;
204: map {
205: if (($v{$_}>=$low) && ($v{$_}<=$high)) {
206: $num++;
207: }
208: } grep /$mask/,keys %v;
209: return $num;
210: }
211:
212:
213: sub SUM {
214: my $mask=mask(@_);
215: my $sum=0;
216: map {
217: $sum+=$v{$_};
218: } grep /$mask/,keys %v;
219: return $sum;
220: }
221:
222: sub MEAN {
223: my $mask=mask(@_);
224: my $sum=0; my $num=0;
225: map {
226: $sum+=$v{$_};
227: $num++;
228: } grep /$mask/,keys %v;
229: if ($num) {
230: return $sum/$num;
231: } else {
232: return undef;
233: }
234: }
235:
236: sub STDDEV {
237: my $mask=mask(@_);
238: my $sum=0; my $num=0;
239: map {
240: $sum+=$v{$_};
241: $num++;
242: } grep /$mask/,keys %v;
243: unless ($num>1) { return undef; }
244: my $mean=$sum/$num;
245: $sum=0;
246: map {
247: $sum+=($v{$_}-$mean)**2;
248: } grep /$mask/,keys %v;
249: return sqrt($sum/($num-1));
250: }
251:
252: sub PROD {
253: my $mask=mask(@_);
254: my $prod=1;
255: map {
256: $prod*=$v{$_};
257: } grep /$mask/,keys %v;
258: return $prod;
259: }
260:
261: sub MAX {
262: my $mask=mask(@_);
263: my $max='-';
264: map {
265: unless ($max) { $max=$v{$_}; }
266: if (($v{$_}>$max) || ($max eq '-')) { $max=$v{$_}; }
267: } grep /$mask/,keys %v;
268: return $max;
269: }
270:
271: sub MIN {
272: my $mask=mask(@_);
273: my $min='-';
274: map {
275: unless ($max) { $max=$v{$_}; }
276: if (($v{$_}<$min) || ($min eq '-')) { $min=$v{$_}; }
277: } grep /$mask/,keys %v;
278: return $min;
279: }
280:
281: sub SUMMAX {
282: my ($num,$lower,$upper)=@_;
283: my $mask=mask($lower,$upper);
284: my @inside=();
285: map {
286: $inside[$#inside+1]=$v{$_};
287: } grep /$mask/,keys %v;
288: @inside=sort(@inside);
289: my $sum=0; my $i;
290: for ($i=$#inside;(($i>$#inside-$num) && ($i>=0));$i--) {
291: $sum+=$inside[$i];
292: }
293: return $sum;
294: }
295:
296: sub SUMMIN {
297: my ($num,$lower,$upper)=@_;
298: my $mask=mask($lower,$upper);
299: my @inside=();
300: map {
301: $inside[$#inside+1]=$v{$_};
302: } grep /$mask/,keys %v;
303: @inside=sort(@inside);
304: my $sum=0; my $i;
305: for ($i=0;(($i<$num) && ($i<=$#inside));$i++) {
306: $sum+=$inside[$i];
307: }
308: return $sum;
309: }
310:
311: sub sett {
312: %t=();
313: my $pattern='';
314: if ($sheettype eq 'assesscalc') {
315: $pattern='A';
316: } else {
317: $pattern='[A-Z]';
318: }
319: map {
320: if ($_=~/template\_(\w)/) {
321: my $col=$1;
322: unless ($col=~/^$pattern/) {
323: map {
324: if ($_=~/A(\d+)/) {
325: my $trow=$1;
326: if ($trow) {
327: my $lb=$col.$trow;
328: $t{$lb}=$f{'template_'.$col};
329: $t{$lb}=~s/\#/$trow/g;
330: $t{$lb}=~s/\.\.+/\,/g;
331: $t{$lb}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
332: $t{$lb}=~s/(^|[^\"\'])\[(\w+)\]/$1\$c\{\'$2\'\}/g;
333: }
334: }
335: } keys %f;
336: }
337: }
338: } keys %f;
339: map {
340: if (($f{$_}) && ($_!~/template\_/)) {
341: my $matches=($_=~/^$pattern(\d+)/);
342: if (($matches) && ($1)) {
343: unless ($f{$_}=~/^\!/) {
344: $t{$_}=$c{$_};
345: }
346: } else {
347: $t{$_}=$f{$_};
348: $t{$_}=~s/\.\.+/\,/g;
349: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
350: $t{$_}=~s/(^|[^\"\'])\[([\w\.]+)\]/$1\$c\{\'$2\'\}/g;
351: }
352: }
353: } keys %f;
354: $t{'A0'}=$f{'A0'};
355: $t{'A0'}=~s/\.\.+/\,/g;
356: $t{'A0'}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
357: $t{'A0'}=~s/(^|[^\"\'])\[([\w\.]+)\]/$1\$c\{\'$2\'\}/g;
358: }
359:
360: sub calc {
361: %v=();
362: &sett();
363: my $notfinished=1;
364: my $depth=0;
365: while ($notfinished) {
366: $notfinished=0;
367: map {
368: my $old=$v{$_};
369: $v{$_}=eval($t{$_});
370: if ($@) {
371: %v=();
372: return $@;
373: }
374: if ($v{$_} ne $old) { $notfinished=1; }
375: } keys %t;
376: $depth++;
377: if ($depth>100) {
378: %v=();
379: return 'Maximum calculation depth exceeded';
380: }
381: }
382: return '';
383: }
384:
385: sub templaterow {
386: my @cols=();
387: $cols[0]='<b><font size=+1>Template</font></b>';
388: map {
389: my $fm=$f{'template_'.$_};
390: $fm=~s/[\'\"]/\&\#34;/g;
391: $cols[$#cols+1]="'template_$_','$fm'".'___eq___'.$fm;
392: } ('A','B','C','D','E','F','G','H','I','J','K','L','M',
393: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
394: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
395: 'n','o','p','q','r','s','t','u','v','w','x','y','z');
396: return @cols;
397: }
398:
399: sub outrowassess {
400: my $n=shift;
401: my @cols=();
402: if ($n) {
403: my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{'A'.$n});
404: $cols[0]=$rl{$usy}.'<br>'.
405: '<select name="sel_'.$n.'" onChange="changesheet('.$n.
406: ')"><option name="default">Default</option>';
407: map {
408: $cols[0].='<option name="'.$_.'"';
409: if ($ufn eq $_) {
410: $cols[0].=' selected';
411: }
412: $cols[0].='>'.$_.'</option>';
413: } @os;
414: $cols[0].='</select>';
415: } else {
416: $cols[0]='<b><font size=+1>Export</font></b>';
417: }
418: map {
419: my $fm=$f{$_.$n};
420: $fm=~s/[\'\"]/\&\#34;/g;
421: $cols[$#cols+1]="'$_$n','$fm'".'___eq___'.$v{$_.$n};
422: } ('A','B','C','D','E','F','G','H','I','J','K','L','M',
423: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
424: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
425: 'n','o','p','q','r','s','t','u','v','w','x','y','z');
426: return @cols;
427: }
428:
429: sub outrow {
430: my $n=shift;
431: my @cols=();
432: if ($n) {
433: $cols[0]=$rl{$f{'A'.$n}};
434: } else {
435: $cols[0]='<b><font size=+1>Export</font></b>';
436: }
437: map {
438: my $fm=$f{$_.$n};
439: $fm=~s/[\'\"]/\&\#34;/g;
440: $cols[$#cols+1]="'$_$n','$fm'".'___eq___'.$v{$_.$n};
441: } ('A','B','C','D','E','F','G','H','I','J','K','L','M',
442: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
443: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
444: 'n','o','p','q','r','s','t','u','v','w','x','y','z');
445: return @cols;
446: }
447:
448: sub exportrowa {
449: my @exportarray=();
450: map {
451: $exportarray[$#exportarray+1]=$v{$_.'0'};
452: } ('A','B','C','D','E','F','G','H','I','J','K','L','M',
453: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z');
454: return @exportarray;
455: }
456:
457: # ------------------------------------------- End of "Inside of the safe space"
458: ENDDEFS
459: $safeeval->reval($code);
460: return $safeeval;
461: }
462:
463: # ------------------------------------------------ Add or change formula values
464:
465: sub setformulas {
466: my ($safeeval,%f)=@_;
467: %{$safeeval->varglob('f')}=%f;
468: }
469:
470: # ------------------------------------------------ Add or change formula values
471:
472: sub setconstants {
473: my ($safeeval,%c)=@_;
474: %{$safeeval->varglob('c')}=%c;
475: }
476:
477: # --------------------------------------------- Set names of other spreadsheets
478:
479: sub setothersheets {
480: my ($safeeval,@os)=@_;
481: @{$safeeval->varglob('os')}=@os;
482: }
483:
484: # ------------------------------------------------ Add or change formula values
485:
486: sub setrowlabels {
487: my ($safeeval,%rl)=@_;
488: %{$safeeval->varglob('rl')}=%rl;
489: }
490:
491: # ------------------------------------------------------- Calculate spreadsheet
492:
493: sub calcsheet {
494: my $safeeval=shift;
495: $safeeval->reval('&calc();');
496: }
497:
498: # ------------------------------------------------------------------ Get values
499:
500: sub getvalues {
501: my $safeeval=shift;
502: return $safeeval->reval('%v');
503: }
504:
505: # ---------------------------------------------------------------- Get formulas
506:
507: sub getformulas {
508: my $safeeval=shift;
509: return %{$safeeval->varglob('f')};
510: }
511:
512: # -------------------------------------------------------------------- Get type
513:
514: sub gettype {
515: my $safeeval=shift;
516: return $safeeval->reval('$sheettype');
517: }
518:
519: # ------------------------------------------------------------------ Set maxrow
520:
521: sub setmaxrow {
522: my ($safeeval,$row)=@_;
523: $safeeval->reval('$maxrow='.$row.';');
524: }
525:
526: # ------------------------------------------------------------------ Get maxrow
527:
528: sub getmaxrow {
529: my $safeeval=shift;
530: return $safeeval->reval('$maxrow');
531: }
532:
533: # ---------------------------------------------------------------- Set filename
534:
535: sub setfilename {
536: my ($safeeval,$fn)=@_;
537: $safeeval->reval('$filename="'.$fn.'";');
538: }
539:
540: # ---------------------------------------------------------------- Get filename
541:
542: sub getfilename {
543: my $safeeval=shift;
544: return $safeeval->reval('$filename');
545: }
546:
547: # --------------------------------------------------------------- Get course ID
548:
549: sub getcid {
550: my $safeeval=shift;
551: return $safeeval->reval('$cid');
552: }
553:
554: # --------------------------------------------------------- Get course filename
555:
556: sub getcfn {
557: my $safeeval=shift;
558: return $safeeval->reval('$cfn');
559: }
560:
561: # ----------------------------------------------------------- Get course number
562:
563: sub getcnum {
564: my $safeeval=shift;
565: return $safeeval->reval('$cnum');
566: }
567:
568: # ------------------------------------------------------------- Get course home
569:
570: sub getchome {
571: my $safeeval=shift;
572: return $safeeval->reval('$chome');
573: }
574:
575: # ----------------------------------------------------------- Get course domain
576:
577: sub getcdom {
578: my $safeeval=shift;
579: return $safeeval->reval('$cdom');
580: }
581:
582: # ---------------------------------------------------------- Get course section
583:
584: sub getcsec {
585: my $safeeval=shift;
586: return $safeeval->reval('$csec');
587: }
588:
589: # --------------------------------------------------------------- Get user name
590:
591: sub getuname {
592: my $safeeval=shift;
593: return $safeeval->reval('$uname');
594: }
595:
596: # ------------------------------------------------------------- Get user domain
597:
598: sub getudom {
599: my $safeeval=shift;
600: return $safeeval->reval('$udom');
601: }
602:
603: # --------------------------------------------------------------- Get user home
604:
605: sub getuhome {
606: my $safeeval=shift;
607: return $safeeval->reval('$uhome');
608: }
609:
610: # -------------------------------------------------------------------- Get symb
611:
612: sub getusymb {
613: my $safeeval=shift;
614: return $safeeval->reval('$usymb');
615: }
616:
617: # ------------------------------------------------------------- Export of A-row
618:
619: sub exportdata {
620: my $safeeval=shift;
621: return $safeeval->reval('&exportrowa()');
622: }
623:
624:
625: # ========================================================== End of Spreadsheet
626: # =============================================================================
627:
628: #
629: # Procedures for screen output
630: #
631: # --------------------------------------------- Produce output row n from sheet
632:
633: sub rown {
634: my ($safeeval,$n)=@_;
635: my $defaultbg;
636: my $rowdata='';
637: unless ($n eq '-') {
638: $defaultbg=((($n-1)/5)==int(($n-1)/5))?'#E0E0':'#FFFF';
639: } else {
640: $defaultbg='#E0FF';
641: }
642: if ((($n-1)/25)==int(($n-1)/25)) {
643: my $what='Student';
644: if (&gettype($safeeval) eq 'assesscalc') {
645: $what='Item';
646: } elsif (&gettype($safeeval) eq 'studentcalc') {
647: $what='Assessment';
648: }
649: $rowdata.="</table>\n<br><table border=2>".
650: '<tr><td> <td>'.$what.'</td>';
651: map {
652: $rowdata.='<td>'.$_.'</td>';
653: } ('A','B','C','D','E','F','G','H','I','J','K','L','M',
654: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
655: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
656: 'n','o','p','q','r','s','t','u','v','w','x','y','z');
657: $rowdata.='</tr>';
658: }
659: $rowdata.="\n<tr><td><b><font size=+1>$n</font></b></td>";
660: my $showf=0;
661: my $proc;
662: my $maxred;
663: if (&gettype($safeeval) eq 'studentcalc') {
664: $proc='&outrowassess';
665: $maxred=26;
666: } else {
667: $proc='&outrow';
668: }
669: if (&gettype($safeeval) eq 'assesscalc') {
670: $maxred=1;
671: } else {
672: $maxred=26;
673: }
674: if ($n eq '-') { $proc='&templaterow'; $n=-1; }
675: map {
676: my $bgcolor=$defaultbg.((($showf-1)/5==int(($showf-1)/5))?'99':'DD');
677: my ($fm,$vl)=split(/\_\_\_eq\_\_\_/,$_);
678: if ($showf==0) { $vl=$_; }
679: if ($showf<=$maxred) { $bgcolor='#FFDDDD'; }
680: if (($n==0) && ($showf<=26)) { $bgcolor='#CCCCFF'; }
681: if (($showf>$maxred) || ((!$n) && ($showf>0))) {
682: if ($vl eq '') {
683: $vl='<font size=+2 color='.$bgcolor.'>#</font>';
684: }
685: $rowdata.=
686: '<td bgcolor='.$bgcolor.'><a href="javascript:celledit('.$fm.');">'.$vl.
687: '</a></td>';
688: } else {
689: $rowdata.='<td bgcolor='.$bgcolor.'> '.$vl.' </td>';
690: }
691: $showf++;
692: } $safeeval->reval($proc.'('.$n.')');
693: return $rowdata.'</tr>';
694: }
695:
696: # ------------------------------------------------------------- Print out sheet
697:
698: sub outsheet {
699: my ($r,$safeeval)=@_;
700: my $maxred;
701: my $realm;
702: if (&gettype($safeeval) eq 'assesscalc') {
703: $maxred=1;
704: $realm='Assessment';
705: } elsif (&gettype($safeeval) eq 'studentcalc') {
706: $maxred=26;
707: $realm='User';
708: } else {
709: $maxred=26;
710: $realm='Course';
711: }
712: my $maxyellow=52-$maxred;
713: my $tabledata=
714: '<table border=2><tr><th colspan=2 rowspan=2><font size=+2>'.
715: $realm.'</font></th>'.
716: '<td bgcolor=#FFDDDD colspan='.$maxred.
717: '><b><font size=+1>Import</font></b></td>'.
718: '<td colspan='.$maxyellow.
719: '><b><font size=+1>Calculations</font></b></td></tr><tr>';
720: my $showf=0;
721: map {
722: $showf++;
723: if ($showf<=$maxred) {
724: $tabledata.='<td bgcolor="#FFDDDD">';
725: } else {
726: $tabledata.='<td>';
727: }
728: $tabledata.="<b><font size=+1>$_</font></b></td>";
729: } ('A','B','C','D','E','F','G','H','I','J','K','L','M',
730: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
731: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
732: 'n','o','p','q','r','s','t','u','v','w','x','y','z');
733: $tabledata.='</tr>';
734: my $row;
735: my $maxrow=&getmaxrow($safeeval);
736: $tabledata.=&rown($safeeval,'-');
737: $r->print($tabledata);
738: for ($row=0;$row<=$maxrow;$row++) {
739: $r->print(&rown($safeeval,$row));
740: }
741: $r->print('</table>');
742: }
743:
744: #
745: # ----------------------------------------------- Read list of available sheets
746: #
747:
748: sub othersheets {
749: my ($safeeval,$stype)=@_;
750:
751: my $cnum=&getcnum($safeeval);
752: my $cdom=&getcdom($safeeval);
753: my $chome=&getchome($safeeval);
754:
755: my @alternatives=();
756: my $result=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum.':'.
757: $stype.'_spreadsheets',$chome);
758: if ($result!~/^error\:/) {
759: map {
760: $alternatives[$#alternatives+1]=
761: &Apache::lonnet::unescape((split(/\=/,$_))[0]);
762: } split(/\&/,$result);
763: }
764: return @alternatives;
765: }
766:
767: #
768: # -------------------------------------- Read spreadsheet formulas for a course
769: #
770:
771: sub readsheet {
772: my ($safeeval,$fn)=@_;
773: my $stype=&gettype($safeeval);
774: my $cnum=&getcnum($safeeval);
775: my $cdom=&getcdom($safeeval);
776: my $chome=&getchome($safeeval);
777:
778: # --------- There is no filename. Look for defaults in course and global, cache
779:
780: unless($fn) {
781: unless ($fn=$defaultsheets{$cnum.'_'.$cdom.'_'.$stype}) {
782: $fn=&Apache::lonnet::reply('get:'.$cdom.':'.$cnum.
783: ':environment:spreadsheet_default_'.$stype,
784: $chome);
785: unless (($fn) && ($fn!~/^error\:/)) {
786: $fn='default_'.$stype;
787: }
788: $defaultsheets{$cnum.'_'.$cdom.'_'.$stype}=$fn;
789: }
790: }
791:
792: # ---------------------------------------------------------- fn now has a value
793:
794: &setfilename($safeeval,$fn);
795:
796: # ------------------------------------------------------ see if sheet is cached
797: my $fstring='';
798: if ($fstring=$spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}) {
799: &setformulas($safeeval,split(/\_\_\_\;\_\_\_/,$fstring));
800: } else {
801:
802: # ---------------------------------------------------- Not cached, need to read
803:
804: my %f=();
805:
806: if ($fn=~/^default\_/) {
807: my $sheetxml='';
808: {
809: my $fh;
810: if ($fh=Apache::File->new($includedir.
811: '/default.'.&gettype($safeeval))) {
812: $sheetxml=join('',<$fh>);
813: }
814: }
815: my $parser=HTML::TokeParser->new(\$sheetxml);
816: my $token;
817: while ($token=$parser->get_token) {
818: if ($token->[0] eq 'S') {
819: if ($token->[1] eq 'field') {
820: $f{$token->[2]->{'col'}.$token->[2]->{'row'}}=
821: $parser->get_text('/field');
822: }
823: if ($token->[1] eq 'template') {
824: $f{'template_'.$token->[2]->{'col'}}=
825: $parser->get_text('/template');
826: }
827: }
828: }
829: } else {
830: my $sheet='';
831: my $reply=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum.':'.$fn,
832: $chome);
833: unless ($reply=~/^error\:/) {
834: $sheet=$reply;
835: }
836: map {
837: my ($name,$value)=split(/\=/,$_);
838: $f{&Apache::lonnet::unescape($name)}=
839: &Apache::lonnet::unescape($value);
840: } split(/\&/,$sheet);
841: }
842: # --------------------------------------------------------------- Cache and set
843: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
844: &setformulas($safeeval,%f);
845: }
846: }
847:
848: # -------------------------------------------------------- Make new spreadsheet
849:
850: sub makenewsheet {
851: my ($uname,$udom,$stype,$usymb)=@_;
852: my $safeeval=initsheet($stype);
853: $safeeval->reval(
854: '$uname="'.$uname.
855: '";$udom="'.$udom.
856: '";$uhome="'.&Apache::lonnet::homeserver($uname,$udom).
857: '";$sheettype="'.$stype.
858: '";$usymb="'.$usymb.
859: '";$csec="'.&Apache::lonnet::usection($udom,$uname,
860: $ENV{'request.course.id'}).
861: '";$cid="'.$ENV{'request.course.id'}.
862: '";$cfn="'.$ENV{'request.course.fn'}.
863: '";$cnum="'.$ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
864: '";$cdom="'.$ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.
865: '";$chome="'.$ENV{'course.'.$ENV{'request.course.id'}.'.home'}.'";');
866: return $safeeval;
867: }
868:
869: # ------------------------------------------------------------ Save spreadsheet
870:
871: sub writesheet {
872: my ($safeeval,$makedef)=@_;
873: my $cid=&getcid($safeeval);
874: if (&Apache::lonnet::allowed('opa',$cid)) {
875: my %f=&getformulas($safeeval);
876: my $stype=&gettype($safeeval);
877: my $cnum=&getcnum($safeeval);
878: my $cdom=&getcdom($safeeval);
879: my $chome=&getchome($safeeval);
880: my $fn=&getfilename($safeeval);
881:
882: # ------------------------------------------------------------- Cache new sheet
883: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
884: # ----------------------------------------------------------------- Write sheet
885: my $sheetdata='';
886: map {
887: unless ($f{$_} eq 'import') {
888: $sheetdata.=&Apache::lonnet::escape($_).'='.
889: &Apache::lonnet::escape($f{$_}).'&';
890: }
891: } keys %f;
892: $sheetdata=~s/\&$//;
893: my $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.$fn.':'.
894: $sheetdata,$chome);
895: if ($reply eq 'ok') {
896: $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.
897: $stype.'_spreadsheets:'.
898: &Apache::lonnet::escape($fn).'='.$ENV{'user.name'}.'@'.
899: $ENV{'user.domain'},
900: $chome);
901: if ($reply eq 'ok') {
902: if ($makedef) {
903: return &Apache::lonnet::reply('put:'.$cdom.':'.$cnum.
904: ':environment:spreadsheet_default_'.$stype.'='.
905: &Apache::lonnet::escape($fn),
906: $chome);
907: } else {
908: return $reply;
909: }
910: } else {
911: return $reply;
912: }
913: } else {
914: return $reply;
915: }
916: }
917: return 'unauthorized';
918: }
919:
920: # ----------------------------------------------- Make a temp copy of the sheet
921: # "Modified workcopy" - interactive only
922: #
923:
924: sub tmpwrite {
925: my $safeeval=shift;
926: my $fn=$ENV{'user.name'}.'_'.
927: $ENV{'user.domain'}.'_spreadsheet_'.&getusymb($safeeval).'_'.
928: &getfilename($safeeval);
929: $fn=~s/\W/\_/g;
930: $fn=$tmpdir.$fn.'.tmp';
931: my $fh;
932: if ($fh=Apache::File->new('>'.$fn)) {
933: print $fh join("\n",&getformulas($safeeval));
934: }
935: }
936:
937: # ---------------------------------------------------------- Read the temp copy
938:
939: sub tmpread {
940: my ($safeeval,$nfield,$nform)=@_;
941: my $fn=$ENV{'user.name'}.'_'.
942: $ENV{'user.domain'}.'_spreadsheet_'.&getusymb($safeeval).'_'.
943: &getfilename($safeeval);
944: $fn=~s/\W/\_/g;
945: $fn=$tmpdir.$fn.'.tmp';
946: my $fh;
947: my %fo=();
948: if ($fh=Apache::File->new($fn)) {
949: my $name;
950: while ($name=<$fh>) {
951: chomp($name);
952: my $value=<$fh>;
953: chomp($value);
954: $fo{$name}=$value;
955: }
956: }
957: if ($nform eq 'changesheet') {
958: $fo{'A'.$nfield}=(split(/\_\_\&\&\&\_\_/,$fo{'A'.$nfield}))[0];
959: unless ($ENV{'form.sel_'.$nfield} eq 'Default') {
960: $fo{'A'.$nfield}.='__&&&__'.$ENV{'form.sel_'.$nfield};
961: }
962: } else {
963: if ($nfield) { $fo{$nfield}=$nform; }
964: }
965: &setformulas($safeeval,%fo);
966: }
967:
968: # ================================================================== Parameters
969: # -------------------------------------------- Figure out a cascading parameter
970: #
971: # For this function to work
972: #
973: # * parmhash needs to be tied
974: # * courseopt and useropt need to be initialized for this user and course
975: #
976:
977: sub parmval {
978: my ($what,$safeeval)=@_;
979: my $cid=&getcid($safeeval);
980: my $csec=&getcsec($safeeval);
981: my $uname=&getuname($safeeval);
982: my $udom=&getudom($safeeval);
983: my $symb=&getusymb($safeeval);
984:
985: unless ($symb) { return ''; }
986: my $result='';
987:
988: my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);
989: # ----------------------------------------------------- Cascading lookup scheme
990: my $rwhat=$what;
991: $what=~s/^parameter\_//;
992: $what=~s/\_/\./;
993:
994: my $symbparm=$symb.'.'.$what;
995: my $mapparm=$mapname.'___(all).'.$what;
996: my $usercourseprefix=$uname.'_'.$udom.'_'.$cid;
997:
998: my $seclevel=
999: $usercourseprefix.'.['.
1000: $csec.'].'.$what;
1001: my $seclevelr=
1002: $usercourseprefix.'.['.
1003: $csec.'].'.$symbparm;
1004: my $seclevelm=
1005: $usercourseprefix.'.['.
1006: $csec.'].'.$mapparm;
1007:
1008: my $courselevel=
1009: $usercourseprefix.'.'.$what;
1010: my $courselevelr=
1011: $usercourseprefix.'.'.$symbparm;
1012: my $courselevelm=
1013: $usercourseprefix.'.'.$mapparm;
1014:
1015: # ---------------------------------------------------------- fourth, check user
1016:
1017: if ($uname) {
1018:
1019: if ($useropt{$courselevelr}) { return $useropt{$courselevelr}; }
1020:
1021: if ($useropt{$courselevelm}) { return $useropt{$courselevelm}; }
1022:
1023: if ($useropt{$courselevel}) { return $useropt{$courselevel}; }
1024:
1025: }
1026:
1027: # --------------------------------------------------------- third, check course
1028:
1029: if ($csec) {
1030:
1031: if ($courseopt{$seclevelr}) { return $courseopt{$seclevelr}; }
1032:
1033: if ($courseopt{$seclevelm}) { return $courseopt{$seclevelm}; }
1034:
1035: if ($courseopt{$seclevel}) { return $courseopt{$seclevel}; }
1036:
1037: }
1038:
1039: if ($courseopt{$courselevelr}) { return $courseopt{$courselevelr}; }
1040:
1041: if ($courseopt{$courselevelm}) { return $courseopt{$courselevelm}; }
1042:
1043: if ($courseopt{$courselevel}) { return $courseopt{$courselevel}; }
1044:
1045: # ----------------------------------------------------- second, check map parms
1046:
1047: my $thisparm=$parmhash{$symbparm};
1048: if ($thisparm) { return $thisparm; }
1049:
1050: # -------------------------------------------------------- first, check default
1051:
1052: return &Apache::lonnet::metadata($fn,$rwhat.'.default');
1053:
1054: }
1055:
1056: # ---------------------------------------------- Update rows for course listing
1057:
1058: sub updateclasssheet {
1059: my $safeeval=shift;
1060: my $cnum=&getcnum($safeeval);
1061: my $cdom=&getcdom($safeeval);
1062: my $cid=&getcid($safeeval);
1063: my $chome=&getchome($safeeval);
1064:
1065: # ---------------------------------------------- Read class list and row labels
1066:
1067: my $classlst=&Apache::lonnet::reply
1068: ('dump:'.$cdom.':'.$cnum.':classlist',$chome);
1069: my %currentlist=();
1070: my $now=time;
1071: unless ($classlst=~/^error\:/) {
1072: map {
1073: my ($name,$value)=split(/\=/,$_);
1074: my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
1075: my $active=1;
1076: if (($end) && ($now>$end)) { $active=0; }
1077: if ($active) {
1078: my $rowlabel='';
1079: $name=&Apache::lonnet::unescape($name);
1080: my ($sname,$sdom)=split(/\:/,$name);
1081: my $ssec=&Apache::lonnet::usection($sdom,$sname,$cid);
1082: if ($ssec==-1) {
1083: $rowlabel='<font color=red>Data not available: '.$name.
1084: '</font>';
1085: } else {
1086: my %reply=&Apache::lonnet::idrget($sdom,$sname);
1087: my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
1088: ':environment:firstname&middlename&lastname&generation',
1089: &Apache::lonnet::homeserver($sname,$sdom));
1090: $rowlabel='<a href="/adm/studentcalc?uname='.$sname.
1091: '&udom='.$sdom.'">'.
1092: $ssec.' '.$reply{$sname}.'<br>';
1093: map {
1094: $rowlabel.=&Apache::lonnet::unescape($_).' ';
1095: } split(/\&/,$reply);
1096: $rowlabel.='</a>';
1097: }
1098: $currentlist{&Apache::lonnet::unescape($name)}=$rowlabel;
1099: }
1100: } split(/\&/,$classlst);
1101: #
1102: # -------------------- Find discrepancies between the course row table and this
1103: #
1104: my %f=&getformulas($safeeval);
1105: my $changed=0;
1106:
1107: my $maxrow=0;
1108: my %existing=();
1109:
1110: # ----------------------------------------------------------- Now obsolete rows
1111: map {
1112: if ($_=~/^A(\d+)/) {
1113: $maxrow=($1>$maxrow)?$1:$maxrow;
1114: $existing{$f{$_}}=1;
1115: unless ((defined($currentlist{$f{$_}})) || (!$1)) {
1116: $f{$_}='!!! Obsolete';
1117: $changed=1;
1118: }
1119: }
1120: } keys %f;
1121:
1122: # -------------------------------------------------------- New and unknown keys
1123:
1124: map {
1125: unless ($existing{$_}) {
1126: $changed=1;
1127: $maxrow++;
1128: $f{'A'.$maxrow}=$_;
1129: }
1130: } sort keys %currentlist;
1131:
1132: if ($changed) { &setformulas($safeeval,%f); }
1133:
1134: &setmaxrow($safeeval,$maxrow);
1135: &setrowlabels($safeeval,%currentlist);
1136:
1137: } else {
1138: return 'Could not access course data';
1139: }
1140: }
1141:
1142: # ----------------------------------- Update rows for student and assess sheets
1143:
1144: sub updatestudentassesssheet {
1145: my $safeeval=shift;
1146: my %bighash;
1147: my $stype=&gettype($safeeval);
1148: my %current=();
1149: unless ($updatedata{$ENV{'request.course.fn'}.'_'.$stype}) {
1150: # -------------------------------------------------------------------- Tie hash
1151: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1152: &GDBM_READER,0640)) {
1153: # --------------------------------------------------------- Get all assessments
1154:
1155: my %allkeys=('timestamp' =>
1156: 'Timestamp of Last Transaction<br>timestamp');
1157: my %allassess=();
1158:
1159: my $adduserstr='';
1160: if ((&getuname($safeeval) ne $ENV{'user.name'}) ||
1161: (&getudom($safeeval) ne $ENV{'user.domain'})) {
1162: $adduserstr='&uname='.&getuname($safeeval).
1163: '&udom='.&getudom($safeeval);
1164: }
1165:
1166: map {
1167: if ($_=~/^src\_(\d+)\.(\d+)$/) {
1168: my $mapid=$1;
1169: my $resid=$2;
1170: my $id=$mapid.'.'.$resid;
1171: my $srcf=$bighash{$_};
1172: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
1173: my $symb=
1174: &Apache::lonnet::declutter($bighash{'map_id_'.$mapid}).
1175: '___'.$resid.'___'.
1176: &Apache::lonnet::declutter($srcf);
1177: $allassess{$symb}=
1178: '<a href="/adm/assesscalc?usymb='.$symb.$adduserstr.'">'.
1179: $bighash{'title_'.$id}.'</a>';
1180: if ($stype eq 'assesscalc') {
1181: map {
1182: if (($_=~/^stores\_(.*)/) || ($_=~/^parameter\_(.*)/)) {
1183: my $key=$_;
1184: my $display=
1185: &Apache::lonnet::metadata($srcf,$key.'.display');
1186: unless ($display) {
1187: $display.=
1188: &Apache::lonnet::metadata($srcf,$key.'.name');
1189: }
1190: $display.='<br>'.$key;
1191: $allkeys{$key}=$display;
1192: }
1193: } split(/\,/,&Apache::lonnet::metadata($srcf,'keys'));
1194: }
1195: }
1196: }
1197: } keys %bighash;
1198: untie(%bighash);
1199:
1200: #
1201: # %allkeys has a list of storage and parameter displays by unikey
1202: # %allassess has a list of all resource displays by symb
1203: #
1204:
1205: if ($stype eq 'assesscalc') {
1206: %current=%allkeys;
1207: } elsif ($stype eq 'studentcalc') {
1208: %current=%allassess;
1209: }
1210: $updatedata{$ENV{'request.course.fn'}.'_'.$stype}=
1211: join('___;___',%current);
1212: } else {
1213: return 'Could not access course data';
1214: }
1215: # ------------------------------------------------------ Get current from cache
1216: } else {
1217: %current=split(/\_\_\_\;\_\_\_/,
1218: $updatedata{$ENV{'request.course.fn'}.'_'.$stype});
1219: }
1220: # -------------------- Find discrepancies between the course row table and this
1221: #
1222: my %f=&getformulas($safeeval);
1223: my $changed=0;
1224:
1225: my $maxrow=0;
1226: my %existing=();
1227:
1228: # ----------------------------------------------------------- Now obsolete rows
1229: map {
1230: if ($_=~/^A(\d+)/) {
1231: $maxrow=($1>$maxrow)?$1:$maxrow;
1232: my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{$_});
1233: $existing{$usy}=1;
1234: unless ((defined($current{$usy})) || (!$1)) {
1235: $f{$_}='!!! Obsolete';
1236: $changed=1;
1237: } elsif ($ufn) {
1238: $current{$usy}
1239: =~s/assesscalc\?usymb\=/assesscalc\?ufn\=$ufn\&usymb\=/;
1240: }
1241: }
1242: } keys %f;
1243:
1244: # -------------------------------------------------------- New and unknown keys
1245:
1246: map {
1247: unless ($existing{$_}) {
1248: $changed=1;
1249: $maxrow++;
1250: $f{'A'.$maxrow}=$_;
1251: }
1252: } keys %current;
1253:
1254: if ($changed) { &setformulas($safeeval,%f); }
1255:
1256: &setmaxrow($safeeval,$maxrow);
1257: &setrowlabels($safeeval,%current);
1258:
1259: undef %current;
1260: undef %existing;
1261: }
1262:
1263: # ------------------------------------------------ Load data for one assessment
1264:
1265: sub loadstudent {
1266: my $safeeval=shift;
1267: my %c=();
1268: my %f=&getformulas($safeeval);
1269: $cachedassess=&getuname($safeeval).':'.&getudom($safeeval);
1270: %cachedstores=();
1271: {
1272: my $reply=&Apache::lonnet::reply('dump:'.&getudom($safeeval).':'.
1273: &getuname($safeeval).':'.
1274: &getcid($safeeval),
1275: &getuhome($safeeval));
1276: unless ($reply=~/^error\:/) {
1277: map {
1278: my ($name,$value)=split(/\=/,$_);
1279: $cachedstores{&Apache::lonnet::unescape($name)}=
1280: &Apache::lonnet::unescape($value);
1281: } split(/\&/,$reply);
1282: }
1283: }
1284: my @assessdata=();
1285: map {
1286: if ($_=~/^A(\d+)/) {
1287: my $row=$1;
1288: unless (($f{$_}=~/^\!/) || ($row==0)) {
1289: my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{$_});
1290: @assessdata=&exportsheet(&getuname($safeeval),
1291: &getudom($safeeval),
1292: 'assesscalc',$usy,$ufn);
1293: my $index=0;
1294: map {
1295: if ($assessdata[$index]) {
1296: my $col=$_;
1297: if ($assessdata[$index]=~/\D/) {
1298: $c{$col.$row}="'".$assessdata[$index]."'";
1299: } else {
1300: $c{$col.$row}=$assessdata[$index];
1301: }
1302: unless ($col eq 'A') {
1303: $f{$col.$row}='import';
1304: }
1305: }
1306: $index++;
1307: } ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1308: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z');
1309: }
1310: }
1311: } keys %f;
1312: $cachedassess='';
1313: undef %cachedstores;
1314: &setformulas($safeeval,%f);
1315: &setconstants($safeeval,%c);
1316: }
1317:
1318: # --------------------------------------------------- Load data for one student
1319:
1320: sub loadcourse {
1321: my ($safeeval,$r)=@_;
1322: my %c=();
1323: my %f=&getformulas($safeeval);
1324: my $total=0;
1325: map {
1326: if ($_=~/^A(\d+)/) {
1327: unless ($f{$_}=~/^\!/) { $total++; }
1328: }
1329: } keys %f;
1330: my $now=0;
1331: my $since=time;
1332: $r->print(<<ENDPOP);
1333: <script>
1334: popwin=open('','popwin','width=400,height=100');
1335: popwin.document.writeln('<html><body bgcolor="#FFFFFF">'+
1336: '<h3>Spreadsheet Calculation Progress</h3>'+
1337: '<form name=popremain>'+
1338: '<input type=text size=35 name=remaining value=Starting></form>'+
1339: '</body></html>');
1340: popwin.document.close();
1341: </script>
1342: ENDPOP
1343: $r->rflush();
1344: map {
1345: if ($_=~/^A(\d+)/) {
1346: my $row=$1;
1347: unless (($f{$_}=~/^\!/) || ($row==0)) {
1348: my @studentdata=&exportsheet(split(/\:/,$f{$_}),
1349: 'studentcalc');
1350: undef %userrdatas;
1351: $now++;
1352: $r->print('<script>popwin.document.popremain.remaining.value="'.
1353: $now.'/'.$total.': '.int((time-$since)/$now*($total-$now)).
1354: ' secs remaining";</script>');
1355: $r->rflush();
1356:
1357: my $index=0;
1358: map {
1359: if ($studentdata[$index]) {
1360: my $col=$_;
1361: if ($studentdata[$index]=~/\D/) {
1362: $c{$col.$row}="'".$studentdata[$index]."'";
1363: } else {
1364: $c{$col.$row}=$studentdata[$index];
1365: }
1366: unless ($col eq 'A') {
1367: $f{$col.$row}='import';
1368: }
1369: }
1370: $index++;
1371: } ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1372: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z');
1373: }
1374: }
1375: } keys %f;
1376: &setformulas($safeeval,%f);
1377: &setconstants($safeeval,%c);
1378: $r->print('<script>popwin.close()</script>');
1379: $r->rflush();
1380: }
1381:
1382: # ------------------------------------------------ Load data for one assessment
1383:
1384: sub loadassessment {
1385: my $safeeval=shift;
1386:
1387: my $uhome=&getuhome($safeeval);
1388: my $uname=&getuname($safeeval);
1389: my $udom=&getudom($safeeval);
1390: my $symb=&getusymb($safeeval);
1391: my $cid=&getcid($safeeval);
1392: my $cnum=&getcnum($safeeval);
1393: my $cdom=&getcdom($safeeval);
1394: my $chome=&getchome($safeeval);
1395:
1396: my $namespace;
1397: unless ($namespace=$cid) { return ''; }
1398:
1399: # ----------------------------------------------------------- Get stored values
1400:
1401: my %returnhash=();
1402:
1403: if ($cachedassess eq $uname.':'.$udom) {
1404: #
1405: # get data out of the dumped stores
1406: #
1407:
1408: my $version=$cachedstores{'version:'.$symb};
1409: my $scope;
1410: for ($scope=1;$scope<=$version;$scope++) {
1411: map {
1412: $returnhash{$_}=$cachedstores{$scope.':'.$symb.':'.$_};
1413: } split(/\:/,$cachedstores{$scope.':keys:'.$symb});
1414: }
1415:
1416: } else {
1417: #
1418: # restore individual
1419: #
1420:
1421: my $answer=&Apache::lonnet::reply(
1422: "restore:$udom:$uname:".
1423: &Apache::lonnet::escape($namespace).":".
1424: &Apache::lonnet::escape($symb),$uhome);
1425: map {
1426: my ($name,$value)=split(/\=/,$_);
1427: $returnhash{&Apache::lonnet::unescape($name)}=
1428: &Apache::lonnet::unescape($value);
1429: } split(/\&/,$answer);
1430: my $version;
1431: for ($version=1;$version<=$returnhash{'version'};$version++) {
1432: map {
1433: $returnhash{$_}=$returnhash{$version.':'.$_};
1434: } split(/\:/,$returnhash{$version.':keys'});
1435: }
1436: }
1437: # ----------------------------- returnhash now has all stores for this resource
1438:
1439: # ---------------------------- initialize coursedata and userdata for this user
1440: undef %courseopt;
1441: undef %useropt;
1442:
1443: my $userprefix=$uname.'_'.$udom.'_';
1444:
1445: unless ($uhome eq 'no_host') {
1446: # -------------------------------------------------------------- Get coursedata
1447: unless
1448: ((time-$courserdatas{$cid.'.last_cache'})<240) {
1449: my $reply=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum.
1450: ':resourcedata',$chome);
1451: if ($reply!~/^error\:/) {
1452: $courserdatas{$cid}=$reply;
1453: $courserdatas{$cid.'.last_cache'}=time;
1454: }
1455: }
1456: map {
1457: my ($name,$value)=split(/\=/,$_);
1458: $courseopt{$userprefix.&Apache::lonnet::unescape($name)}=
1459: &Apache::lonnet::unescape($value);
1460: } split(/\&/,$courserdatas{$cid});
1461: # --------------------------------------------------- Get userdata (if present)
1462: unless
1463: ((time-$userrdatas{$uname.'___'.$udom.'.last_cache'})<240) {
1464: my $reply=
1465: &Apache::lonnet::reply('dump:'.$udom.':'.$uname.':resourcedata',$uhome);
1466: if ($reply!~/^error\:/) {
1467: $userrdatas{$uname.'___'.$udom}=$reply;
1468: $userrdatas{$uname.'___'.$udom.'.last_cache'}=time;
1469: }
1470: }
1471: map {
1472: my ($name,$value)=split(/\=/,$_);
1473: $useropt{$userprefix.&Apache::lonnet::unescape($name)}=
1474: &Apache::lonnet::unescape($value);
1475: } split(/\&/,$userrdatas{$uname.'___'.$udom});
1476: }
1477: # ----------------- now courseopt, useropt initialized for this user and course
1478: # (used by parmval)
1479:
1480: my %c=();
1481:
1482: if (tie(%parmhash,'GDBM_File',
1483: &getcfn($safeeval).'_parms.db',&GDBM_READER,0640)) {
1484: my %f=&getformulas($safeeval);
1485: map {
1486: if ($_=~/^A/) {
1487: unless ($f{$_}=~/^\!/) {
1488: if ($f{$_}=~/^parameter/) {
1489: my $val=&parmval($f{$_},$safeeval);
1490: $c{$_}=$val;
1491: $c{$f{$_}}=$val;
1492: } else {
1493: my $key=$f{$_};
1494: my $ckey=$key;
1495: $key=~s/^stores\_/resource\./;
1496: $key=~s/\_/\./;
1497: $c{$_}=$returnhash{$key};
1498: $c{$ckey}=$returnhash{$key};
1499: }
1500: }
1501: }
1502: } keys %f;
1503: untie(%parmhash);
1504: }
1505: &setconstants($safeeval,%c);
1506: }
1507:
1508: # --------------------------------------------------------- Various form fields
1509:
1510: sub textfield {
1511: my ($title,$name,$value)=@_;
1512: return "\n<p><b>$title:</b><br>".
1513: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
1514: }
1515:
1516: sub hiddenfield {
1517: my ($name,$value)=@_;
1518: return "\n".'<input type=hidden name="'.$name.'" value="'.$value.'">';
1519: }
1520:
1521: sub selectbox {
1522: my ($title,$name,$value,%options)=@_;
1523: my $selout="\n<p><b>$title:</b><br>".'<select name="'.$name.'">';
1524: map {
1525: $selout.='<option value="'.$_.'"';
1526: if ($_ eq $value) { $selout.=' selected'; }
1527: $selout.='>'.$options{$_}.'</option>';
1528: } sort keys %options;
1529: return $selout.'</select>';
1530: }
1531:
1532: # =============================================== Update information in a sheet
1533: #
1534: # Add new users or assessments, etc.
1535: #
1536:
1537: sub updatesheet {
1538: my $safeeval=shift;
1539: my $stype=&gettype($safeeval);
1540: if ($stype eq 'classcalc') {
1541: return &updateclasssheet($safeeval);
1542: } else {
1543: return &updatestudentassesssheet($safeeval);
1544: }
1545: }
1546:
1547: # =================================================== Load the rows for a sheet
1548: #
1549: # Import the data for rows
1550: #
1551:
1552: sub loadrows {
1553: my ($safeeval,$r)=@_;
1554: my $stype=&gettype($safeeval);
1555: if ($stype eq 'classcalc') {
1556: &loadcourse($safeeval,$r);
1557: } elsif ($stype eq 'studentcalc') {
1558: &loadstudent($safeeval);
1559: } else {
1560: &loadassessment($safeeval);
1561: }
1562: }
1563:
1564: # ======================================================= Forced recalculation?
1565:
1566: sub checkthis {
1567: my ($keyname,$time)=@_;
1568: return ($time<$expiredates{$keyname});
1569: }
1570: sub forcedrecalc {
1571: my ($uname,$udom,$stype,$usymb)=@_;
1572: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
1573: my $time=$oldsheets{$key.'.time'};
1574: if ($ENV{'form.forcerecalc'}) { return 1; }
1575: unless ($time) { return 1; }
1576: if ($stype eq 'assesscalc') {
1577: my $map=(split(/\_\_\_/,$usymb))[0];
1578: if (&checkthis('::assesscalc:',$time) ||
1579: &checkthis('::assesscalc:'.$map,$time) ||
1580: &checkthis('::assesscalc:'.$usymb,$time) ||
1581: &checkthis($uname.':'.$udom.':assesscalc:',$time) ||
1582: &checkthis($uname.':'.$udom.':assesscalc:'.$map,$time) ||
1583: &checkthis($uname.':'.$udom.':assesscalc:'.$usymb,$time)) {
1584: return 1;
1585: }
1586: } else {
1587: if (&checkthis('::studentcalc:',$time) ||
1588: &checkthis($uname.':'.$udom.':studentcalc:',$time)) {
1589: return 1;
1590: }
1591: }
1592: return 0;
1593: }
1594:
1595: # ============================================================== Export handler
1596: #
1597: # Non-interactive call from with program
1598: #
1599:
1600: sub exportsheet {
1601: my ($uname,$udom,$stype,$usymb,$fn)=@_;
1602: my @exportarr=();
1603: #
1604: # Check if cached
1605: #
1606:
1607: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
1608: my $found='';
1609:
1610: if ($oldsheets{$key}) {
1611: map {
1612: my ($name,$value)=split(/\_\_\_\=\_\_\_/,$_);
1613: if ($name eq $fn) {
1614: $found=$value;
1615: }
1616: } split(/\_\_\_\&\_\_\_/,$oldsheets{$key});
1617: }
1618:
1619: unless ($found) {
1620: &cachedssheets($uname,$udom,&Apache::lonnet::homeserver($uname,$udom));
1621: if ($oldsheets{$key}) {
1622: map {
1623: my ($name,$value)=split(/\_\_\_\=\_\_\_/,$_);
1624: if ($name eq $fn) {
1625: $found=$value;
1626: }
1627: } split(/\_\_\_\&\_\_\_/,$oldsheets{$key});
1628: }
1629: }
1630: #
1631: # Check if still valid
1632: #
1633: if ($found) {
1634: if (&forcedrecalc($uname,$udom,$stype,$usymb)) {
1635: $found='';
1636: }
1637: }
1638:
1639: if ($found) {
1640: #
1641: # Return what was cached
1642: #
1643: @exportarr=split(/\_\_\_\;\_\_\_/,$found);
1644:
1645: } else {
1646: #
1647: # Not cached
1648: #
1649:
1650: my $thissheet=&makenewsheet($uname,$udom,$stype,$usymb);
1651: &readsheet($thissheet,$fn);
1652: &updatesheet($thissheet);
1653: &loadrows($thissheet);
1654: &calcsheet($thissheet);
1655: @exportarr=&exportdata($thissheet);
1656: #
1657: # Store now
1658: #
1659: my $cid=$ENV{'request.course.id'};
1660: my $current='';
1661: if ($stype eq 'studentcalc') {
1662: $current=&Apache::lonnet::reply('get:'.
1663: $ENV{'course.'.$cid.'.domain'}.':'.
1664: $ENV{'course.'.$cid.'.num'}.
1665: ':nohist_calculatedsheets:'.
1666: &Apache::lonnet::escape($key),
1667: $ENV{'course.'.$cid.'.home'});
1668: } else {
1669: $current=&Apache::lonnet::reply('get:'.
1670: &getudom($thissheet).':'.
1671: &getuname($thissheet).
1672: ':nohist_calculatedsheets_'.
1673: $ENV{'request.course.id'}.':'.
1674: &Apache::lonnet::escape($key),
1675: &getuhome($thissheet));
1676:
1677: }
1678: my %currentlystored=();
1679: unless ($current=~/^error\:/) {
1680: map {
1681: my ($name,$value)=split(/\_\_\_\=\_\_\_/,$_);
1682: $currentlystored{$name}=$value;
1683: } split(/\_\_\_\&\_\_\_/,&Apache::lonnet::unescape($current));
1684: }
1685: $currentlystored{$fn}=join('___;___',@exportarr);
1686:
1687: my $newstore='';
1688: map {
1689: if ($newstore) { $newstore.='___&___'; }
1690: $newstore.=$_.'___=___'.$currentlystored{$_};
1691: } keys %currentlystored;
1692: my $now=time;
1693: if ($stype eq 'studentcalc') {
1694: &Apache::lonnet::reply('put:'.
1695: $ENV{'course.'.$cid.'.domain'}.':'.
1696: $ENV{'course.'.$cid.'.num'}.
1697: ':nohist_calculatedsheets:'.
1698: &Apache::lonnet::escape($key).'='.
1699: &Apache::lonnet::escape($newstore).'&'.
1700: &Apache::lonnet::escape($key).'.time='.$now,
1701: $ENV{'course.'.$cid.'.home'});
1702: } else {
1703: &Apache::lonnet::reply('put:'.
1704: &getudom($thissheet).':'.
1705: &getuname($thissheet).
1706: ':nohist_calculatedsheets_'.
1707: $ENV{'request.course.id'}.':'.
1708: &Apache::lonnet::escape($key).'='.
1709: &Apache::lonnet::escape($newstore).'&'.
1710: &Apache::lonnet::escape($key).'.time='.$now,
1711: &getuhome($thissheet));
1712: }
1713: }
1714: return @exportarr;
1715: }
1716: # ============================================================ Expiration Dates
1717: #
1718: # Load previously cached student spreadsheets for this course
1719: #
1720:
1721: sub expirationdates {
1722: undef %expiredates;
1723: my $cid=$ENV{'request.course.id'};
1724: my $reply=&Apache::lonnet::reply('dump:'.
1725: $ENV{'course.'.$cid.'.domain'}.':'.
1726: $ENV{'course.'.$cid.'.num'}.
1727: ':nohist_expirationdates',
1728: $ENV{'course.'.$cid.'.home'});
1729: unless ($reply=~/^error\:/) {
1730: map {
1731: my ($name,$value)=split(/\=/,$_);
1732: $expiredates{&Apache::lonnet::unescape($name)}
1733: =&Apache::lonnet::unescape($value);
1734: } split(/\&/,$reply);
1735: }
1736: }
1737:
1738: # ===================================================== Calculated sheets cache
1739: #
1740: # Load previously cached student spreadsheets for this course
1741: #
1742:
1743: sub cachedcsheets {
1744: my $cid=$ENV{'request.course.id'};
1745: my $reply=&Apache::lonnet::reply('dump:'.
1746: $ENV{'course.'.$cid.'.domain'}.':'.
1747: $ENV{'course.'.$cid.'.num'}.
1748: ':nohist_calculatedsheets',
1749: $ENV{'course.'.$cid.'.home'});
1750: unless ($reply=~/^error\:/) {
1751: map {
1752: my ($name,$value)=split(/\=/,$_);
1753: $oldsheets{&Apache::lonnet::unescape($name)}
1754: =&Apache::lonnet::unescape($value);
1755: } split(/\&/,$reply);
1756: }
1757: }
1758:
1759: # ===================================================== Calculated sheets cache
1760: #
1761: # Load previously cached assessment spreadsheets for this student
1762: #
1763:
1764: sub cachedssheets {
1765: my ($sname,$sdom,$shome)=@_;
1766: unless (($loadedcaches{$sname.'_'.$sdom}) || ($shome eq 'no_host')) {
1767: my $cid=$ENV{'request.course.id'};
1768: my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.
1769: ':nohist_calculatedsheets_'.
1770: $ENV{'request.course.id'},
1771: $shome);
1772: unless ($reply=~/^error\:/) {
1773: map {
1774: my ($name,$value)=split(/\=/,$_);
1775: $oldsheets{&Apache::lonnet::unescape($name)}
1776: =&Apache::lonnet::unescape($value);
1777: } split(/\&/,$reply);
1778: }
1779: $loadedcaches{$sname.'_'.$sdom}=1;
1780: }
1781: }
1782:
1783: # ===================================================== Calculated sheets cache
1784: #
1785: # Load previously cached assessment spreadsheets for this student
1786: #
1787:
1788: # ================================================================ Main handler
1789: #
1790: # Interactive call to screen
1791: #
1792: #
1793:
1794:
1795: sub handler {
1796: my $r=shift;
1797:
1798: if ($r->header_only) {
1799: $r->content_type('text/html');
1800: $r->send_http_header;
1801: return OK;
1802: }
1803:
1804: # ---------------------------------------------------- Global directory configs
1805:
1806: $includedir=$r->dir_config('lonIncludes');
1807: $tmpdir=$r->dir_config('lonDaemons').'/tmp/';
1808:
1809: # ----------------------------------------------------- Needs to be in a course
1810:
1811: if ($ENV{'request.course.fn'}) {
1812:
1813: # --------------------------- Get query string for limited number of parameters
1814:
1815: map {
1816: my ($name, $value) = split(/=/,$_);
1817: $value =~ tr/+/ /;
1818: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1819: if (($name eq 'uname') || ($name eq 'udom') ||
1820: ($name eq 'usymb') || ($name eq 'ufn')) {
1821: unless ($ENV{'form.'.$name}) {
1822: $ENV{'form.'.$name}=$value;
1823: }
1824: }
1825: } (split(/&/,$ENV{'QUERY_STRING'}));
1826:
1827: # -------------------------------------- Interactive loading of specific sheet?
1828: if (($ENV{'form.load'}) && ($ENV{'form.loadthissheet'} ne 'Default')) {
1829: $ENV{'form.ufn'}=$ENV{'form.loadthissheet'};
1830: }
1831: # ------------------------------------------- Nothing there? Must be login user
1832:
1833: my $aname;
1834: my $adom;
1835:
1836: unless ($ENV{'form.uname'}) {
1837: $aname=$ENV{'user.name'};
1838: $adom=$ENV{'user.domain'};
1839: } else {
1840: $aname=$ENV{'form.uname'};
1841: $adom=$ENV{'form.udom'};
1842: }
1843:
1844: # ------------------------------------------------------------------- Open page
1845:
1846: $r->content_type('text/html');
1847: $r->header_out('Cache-control','no-cache');
1848: $r->header_out('Pragma','no-cache');
1849: $r->send_http_header;
1850:
1851: # --------------------------------------------------------------- Screen output
1852:
1853: $r->print('<html><head><title>LON-CAPA Spreadsheet</title>');
1854: $r->print(<<ENDSCRIPT);
1855: <script language="JavaScript">
1856:
1857: function celledit(cn,cf) {
1858: var cnf=prompt(cn,cf);
1859: if (cnf!=null) {
1860: document.sheet.unewfield.value=cn;
1861: document.sheet.unewformula.value=cnf;
1862: document.sheet.submit();
1863: }
1864: }
1865:
1866: function changesheet(cn) {
1867: document.sheet.unewfield.value=cn;
1868: document.sheet.unewformula.value='changesheet';
1869: document.sheet.submit();
1870: }
1871:
1872: </script>
1873: ENDSCRIPT
1874: $r->print('</head><body bgcolor="#FFFFFF">'.
1875: '<img align=right src=/adm/lonIcons/lonlogos.gif>'.
1876: '<h1>LON-CAPA Spreadsheet</h1>'.
1877: '<form action="'.$r->uri.'" name=sheet method=post>'.
1878: &hiddenfield('uname',$ENV{'form.uname'}).
1879: &hiddenfield('udom',$ENV{'form.udom'}).
1880: &hiddenfield('usymb',$ENV{'form.usymb'}).
1881: &hiddenfield('unewfield','').
1882: &hiddenfield('unewformula',''));
1883:
1884: # ---------------------- Make sure that this gets out, even if user hits "stop"
1885:
1886: $r->rflush();
1887:
1888: # ---------------------------------------------------------------- Full recalc?
1889:
1890:
1891: if ($ENV{'form.forcerecalc'}) {
1892: $r->print('<h4>Completely Recalculating Sheet ...</h4>');
1893: undef %spreadsheets;
1894: undef %courserdatas;
1895: undef %userrdatas;
1896: undef %defaultsheets;
1897: undef %updatedata;
1898: }
1899:
1900: # ---------------------------------------- Read new sheet or modified worksheet
1901:
1902: $r->uri=~/\/(\w+)$/;
1903:
1904: my $asheet=&makenewsheet($aname,$adom,$1,$ENV{'form.usymb'});
1905:
1906: # ------------------------ If a new formula had been entered, go from work copy
1907:
1908: if ($ENV{'form.unewfield'}) {
1909: $r->print('<h2>Modified Workcopy</h2>');
1910: $ENV{'form.unewformula'}=~s/\'/\"/g;
1911: $r->print('<p>New formula: '.$ENV{'form.unewfield'}.'='.
1912: $ENV{'form.unewformula'}.'<p>');
1913: &setfilename($asheet,$ENV{'form.ufn'});
1914: &tmpread($asheet,
1915: $ENV{'form.unewfield'},$ENV{'form.unewformula'});
1916:
1917: } elsif ($ENV{'form.saveas'}) {
1918: &setfilename($asheet,$ENV{'form.ufn'});
1919: &tmpread($asheet);
1920: } else {
1921: &readsheet($asheet,$ENV{'form.ufn'});
1922: }
1923:
1924: # -------------------------------------------------- Print out user information
1925:
1926: unless (&gettype($asheet) eq 'classcalc') {
1927: $r->print('<p><b>User:</b> '.&getuname($asheet).
1928: '<br><b>Domain:</b> '.&getudom($asheet));
1929: if (&getcsec($asheet) eq '-1') {
1930: $r->print('<h3><font color=red>'.
1931: 'Not a student in this course</font></h3>');
1932: } else {
1933: $r->print('<br><b>Section/Group:</b> '.&getcsec($asheet));
1934: }
1935: }
1936:
1937: # ---------------------------------------------------------------- Course title
1938:
1939: $r->print('<h1>'.
1940: $ENV{'course.'.$ENV{'request.course.id'}.'.description'}.'</h1>');
1941:
1942: # ---------------------------------------------------- See if user can see this
1943:
1944: if ((&gettype($asheet) eq 'classcalc') ||
1945: (&getuname($asheet) ne $ENV{'user.name'}) ||
1946: (&getudom($asheet) ne $ENV{'user.domain'})) {
1947: unless (&Apache::lonnet::allowed('vgr',&getcid($asheet))) {
1948: $r->print(
1949: '<h1>Access Permission Denied</h1></form></body></html>');
1950: return OK;
1951: }
1952: }
1953:
1954: # ---------------------------------------------------------- Additional options
1955:
1956: $r->print(
1957: '<input type=submit name=forcerecalc value="Completely Recalculate Sheet"><p>'
1958: );
1959: if (&gettype($asheet) eq 'assesscalc') {
1960: $r->print ('<p><font size=+2><a href="/adm/studentcalc?uname='.
1961: &getuname($asheet).
1962: '&udom='.&getudom($asheet).
1963: '">Level up: Student Sheet</a></font><p>');
1964: }
1965:
1966: if ((&gettype($asheet) eq 'studentcalc') &&
1967: (&Apache::lonnet::allowed('vgr',&getcid($asheet)))) {
1968: $r->print (
1969: '<p><font size=+2><a href="/adm/classcalc">'.
1970: 'Level up: Course Sheet</a></font><p>');
1971: }
1972:
1973:
1974: # ----------------------------------------------------------------- Save dialog
1975:
1976:
1977: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
1978: my $fname=$ENV{'form.ufn'};
1979: $fname=~s/\_[^\_]+$//;
1980: if ($fname eq 'default') { $fname='course_default'; }
1981: $r->print('<input type=submit name=saveas value="Save as ...">'.
1982: '<input type=text size=20 name=newfn value="'.$fname.
1983: '"> (make default: <input type=checkbox name="makedefufn">)<p>');
1984: }
1985:
1986: $r->print(&hiddenfield('ufn',&getfilename($asheet)));
1987:
1988: # ----------------------------------------------------------------- Load dialog
1989: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
1990: $r->print('<p><input type=submit name=load value="Load ...">'.
1991: '<select name="loadthissheet">'.
1992: '<option name="default">Default</option>');
1993: map {
1994: $r->print('<option name="'.$_.'"');
1995: if ($ENV{'form.ufn'} eq $_) {
1996: $r->print(' selected');
1997: }
1998: $r->print('>'.$_.'</option>');
1999: } &othersheets($asheet,&gettype($asheet));
2000: $r->print('</select><p>');
2001: if (&gettype($asheet) eq 'studentcalc') {
2002: &setothersheets($asheet,&othersheets($asheet,'assesscalc'));
2003: }
2004: }
2005:
2006: # --------------------------------------------------------------- Cached sheets
2007:
2008: &expirationdates();
2009:
2010: undef %oldsheets;
2011: undef %loadedcaches;
2012:
2013: if (&gettype($asheet) eq 'classcalc') {
2014: $r->print("Loading previously calculated student sheets ...<br>\n");
2015: $r->rflush();
2016: &cachedcsheets();
2017: } elsif (&gettype($asheet) eq 'studentcalc') {
2018: $r->print("Loading previously calculated assessment sheets ...<br>\n");
2019: $r->rflush();
2020: &cachedssheets(&getuname($asheet),&getudom($asheet),
2021: &getuhome($asheet));
2022: }
2023:
2024: # ----------------------------------------------------- Update sheet, load rows
2025:
2026: $r->print("Loaded sheet(s), updating rows ...<br>\n");
2027: $r->rflush();
2028:
2029: &updatesheet($asheet);
2030:
2031: $r->print("Updated rows, loading row data ...<br>\n");
2032: $r->rflush();
2033:
2034: &loadrows($asheet,$r);
2035:
2036: $r->print("Loaded row data, calculating sheet ...<br>\n");
2037: $r->rflush();
2038:
2039: my $calcoutput=&calcsheet($asheet);
2040: $r->print('<h3><font color=red>'.$calcoutput.'</h3></font>');
2041:
2042: # ---------------------------------------------------- See if something to save
2043:
2044: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2045: my $fname='';
2046: if ($ENV{'form.saveas'} && ($fname=$ENV{'form.newfn'})) {
2047: $fname=~s/\W/\_/g;
2048: if ($fname eq 'default') { $fname='course_default'; }
2049: $fname.='_'.&gettype($asheet);
2050: &setfilename($asheet,$fname);
2051: $ENV{'form.ufn'}=$fname;
2052: $r->print('<p>Saving spreadsheet: '.
2053: &writesheet($asheet,$ENV{'form.makedefufn'}).'<p>');
2054: }
2055: }
2056:
2057: # ------------------------------------------------ Write the modified worksheet
2058:
2059: $r->print('<b>Current sheet:</b> '.&getfilename($asheet).'<p>');
2060:
2061: &tmpwrite($asheet);
2062:
2063: # ------------------------------------------------------------- Print out sheet
2064:
2065: &outsheet($r,$asheet);
2066: $r->print('</form></body></html>');
2067:
2068: # ------------------------------------------------------------------------ Done
2069: } else {
2070: # ----------------------------- Not in a course, or not allowed to modify parms
2071: $ENV{'user.error.msg'}=
2072: $r->uri.":opa:0:0:Cannot modify spreadsheet";
2073: return HTTP_NOT_ACCEPTABLE;
2074: }
2075: return OK;
2076:
2077: }
2078:
2079: 1;
2080: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonspreadsheet.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / interface