version 1.3, 2000/12/04 19:38:35
|
version 1.4, 2000/12/04 22:09:39
|
Line 13 use Apache::lonnet;
|
Line 13 use Apache::lonnet;
|
use Apache::Constants qw(:common); |
use Apache::Constants qw(:common); |
use HTML::TokeParser; |
use HTML::TokeParser; |
|
|
# |
|
# f: formulas |
|
# t: intermediate format (from f after sett) |
|
# v: output values (from t after calcv) |
|
# |
|
|
|
use vars qw(%v %t %f); |
|
|
|
|
sub initsheet { |
sub deffunc { |
my $safeeval = new Safe; |
my $safeeval=shift; |
my $safehole = new Safe::Hole; |
|
$safeeval->permit("entereval"); |
|
$safeeval->permit(":base_math"); |
|
$safeeval->permit("sort"); |
|
$safeeval->deny(":base_io"); |
|
$safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); |
my $code=<<'ENDDEFS'; |
my $code=<<'ENDDEFS'; |
# ---------------------------------------------------- Inside of the safe space |
# ---------------------------------------------------- Inside of the safe space |
|
|
|
# |
|
# f: formulas |
|
# t: intermediate format (variable references expanded) |
|
# v: output values |
|
# |
|
|
|
%v=(); |
|
%t=(); |
|
%f=(); |
|
|
sub mask { |
sub mask { |
my ($lower,$upper)=@_; |
my ($lower,$upper)=@_; |
|
|
Line 91 sub mask {
|
Line 100 sub mask {
|
} |
} |
} |
} |
} |
} |
return '^'.$alpha.$num.'$'; |
return '^'.$alpha.$num."\$"; |
} |
} |
|
|
|
|
sub NUM { |
sub NUM { |
my $mask=mask(@_); |
my $mask=mask(@_); |
my $num=0; |
my $num=0; |
Line 215 sub SUMMIN {
|
Line 223 sub SUMMIN {
|
return $sum; |
return $sum; |
} |
} |
|
|
|
|
# ------------------------------------------- End of "Inside of the safe space" |
|
ENDDEFS |
|
$safeeval->reval($code); |
|
} |
|
|
|
# --------------------------------------------------------- Initialize t from f |
|
|
|
sub sett { |
sub sett { |
%t=(); |
%t=(); |
map { |
map { |
Line 234 sub sett {
|
Line 234 sub sett {
|
} keys %f; |
} keys %f; |
} |
} |
|
|
# ------------------------------------------------------------ Calculate values |
sub calc { |
|
|
sub calcv { |
|
my $safeeval=shift; |
|
%v=(); |
%v=(); |
|
&sett(); |
my $notfinished=1; |
my $notfinished=1; |
my $depth=0; |
my $depth=0; |
while ($notfinished) { |
while ($notfinished) { |
$notfinished=0; |
$notfinished=0; |
map { |
map { |
my $old=$v{$_}; |
my $old=$v{$_}; |
$v{$_}=$safeeval->reval($t{$_}); |
$v{$_}=eval($t{$_}); |
if ($@) { |
if ($@) { |
%v=(); |
%v=(); |
return $@; |
return $@; |
Line 261 sub calcv {
|
Line 259 sub calcv {
|
return ''; |
return ''; |
} |
} |
|
|
|
# ------------------------------------------- End of "Inside of the safe space" |
|
ENDDEFS |
|
$safeeval->reval($code); |
|
return $safeeval; |
|
} |
|
|
|
# ------------------------------------------------ Add or change formula values |
|
|
|
sub setformulas { |
|
my ($safeeval,@f)=@_; |
|
$safeeval->reval('%f=(%f,'."('".join("','",@f)."'));"); |
|
} |
|
|
|
# ------------------------------------------------------- Calculate spreadsheet |
|
|
|
sub calcsheet { |
|
my $safeeval=shift; |
|
$safeeval->reval('&calc();'); |
|
} |
|
|
|
# ------------------------------------------------------------------ Get values |
|
|
|
sub getvalues { |
|
my $safeeval=shift; |
|
return $safeeval->reval('%v'); |
|
} |
|
|
|
# ---------------------------------------------------------------- Get formulas |
|
|
|
sub getformulas { |
|
my $safeeval=shift; |
|
return $safeeval->reval('%f'); |
|
} |
|
|
# ------------------------------------------------------------ Read spreadsheet |
# ------------------------------------------------------------ Read spreadsheet |
|
|
sub readf { |
sub readf { |
my $fn=shift; |
my $fn=shift; |
%f=(); |
my %f=(); |
my $content; |
my $content; |
{ |
{ |
my $fh=Apache::File->new($fn); |
my $fh=Apache::File->new($fn); |
Line 313 sub readmeta {
|
Line 345 sub readmeta {
|
} |
} |
|
|
|
|
# ------------------------------------------------------------ Returns safeeval |
|
|
|
sub init { |
|
|
|
%v=(); |
|
%t=(); |
|
%f=(); |
|
my $safeeval = new Safe; |
|
my $safehole = new Safe::Hole; |
|
$safeeval->permit("entereval"); |
|
$safeeval->permit(":base_math"); |
|
$safeeval->permit("sort"); |
|
$safeeval->deny(":base_io"); |
|
$safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); |
|
$safeeval->share('%v','%t','%f'); |
|
&deffunc($safeeval); |
|
|
|
return $safeeval; |
|
} |
|
|
|
# ----------------------------------------------------------------------------- |
# ----------------------------------------------------------------------------- |
|
|
sub handler { |
sub handler { |
Line 345 sub handler {
|
Line 357 sub handler {
|
$r->print('<html><head><title>LON-CAPA Spreadsheet</title></head>'); |
$r->print('<html><head><title>LON-CAPA Spreadsheet</title></head>'); |
$r->print('<body bgcolor="#FFFFFF">'); |
$r->print('<body bgcolor="#FFFFFF">'); |
|
|
my $safeeval=init(); |
my $sheetone=initsheet(); |
|
|
$f{'A3'}=5; |
&setformulas($sheetone,('A1' => '5', 'B2' => '6', 'C4' => 'A1+B2')); |
$f{'A4'}=3; |
$r->print(&calcsheet($sheetone)); |
$f{'A5'}=8; |
my %output=&getformulas($sheetone); |
$f{'E100'}=5; |
|
$f{'C3'}='A3+6'; |
$r->print('FORM:'.$output{'A1'}.' '.$output{'B2'}.' '.$output{'C4'}); |
$f{'B4'}='8+int(C3/3)'; |
|
$f{'C7'}='A3+B4'; |
my %output=&getvalues($sheetone); |
$f{'G8'}='MEAN("E*")'; |
|
$f{'G5'}='A3+SUMMIN(2,"A*")'; |
$r->print('<br>OUT:'.$output{'A1'}.' '.$output{'B2'}.' '.$output{'C4'}); |
$f{'G6'}='A3+SUM("A*")'; |
|
$f{'G7'}='STDDEV("A*")'; |
|
$f{'G9'}='NUM("G*")'; |
|
$f{'H10'}='MEAN("E*")'; |
|
$f{'G10'}='BIN(3,5,"A*")'; |
|
&sett(); |
|
$r->print(&calcv($safeeval)."\n"); |
|
$r->print($v{'C7'}."\n"); |
|
$r->print($t{'G5'}.' - '.$v{'G5'}."\n"); |
|
$r->print($t{'G6'}.' - '.$v{'G6'}."\n"); |
|
$r->print($t{'G7'}.' - '.$v{'G7'}."\n"); |
|
$r->print($t{'G8'}.' - '.$v{'G8'}."\n"); |
|
$r->print($t{'G9'}.' - '.$v{'G9'}."\n"); |
|
$r->print($t{'G10'}.' - '.$v{'G10'}."\n"); |
|
|
|
$r->print('</body></html>'); |
$r->print('</body></html>'); |
return OK; |
return OK; |