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