--- loncom/interface/spreadsheet/Spreadsheet.pm 2003/09/05 01:57:54 1.23
+++ loncom/interface/spreadsheet/Spreadsheet.pm 2003/12/08 19:43:03 1.32
@@ -1,5 +1,5 @@
#
-# $Id: Spreadsheet.pm,v 1.23 2003/09/05 01:57:54 matthew Exp $
+# $Id: Spreadsheet.pm,v 1.32 2003/12/08 19:43:03 matthew Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -48,8 +48,8 @@ Spreadsheet
package Apache::Spreadsheet;
use strict;
-use warnings FATAL=>'all';
-no warnings 'uninitialized';
+#use warnings FATAL=>'all';
+#no warnings 'uninitialized';
use Apache::Constants qw(:common :http);
use Apache::lonnet;
use Safe;
@@ -59,6 +59,7 @@ use HTML::Entities();
use HTML::TokeParser;
use Spreadsheet::WriteExcel;
use Time::HiRes;
+use Apache::lonlocal;
##
## Package Variables
@@ -299,18 +300,23 @@ Returns the safe space required by a Spr
=cut
######################################################
+{
+
+ my $safeeval;
+
sub initialize_safe_space {
- my $self = shift;
- my $safeeval = new Safe(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');
- $safehole->wrap(\&mask,$safeeval,'&mask');
- $safeeval->share('$@');
- my $code=<<'ENDDEFS';
+ my $self = shift;
+ if (! defined($safeeval)) {
+ $safeeval = new Safe(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');
+ $safehole->wrap(\&mask,$safeeval,'&mask');
+ $safeeval->share('$@');
+ my $code=<<'ENDDEFS';
# ---------------------------------------------------- Inside of the safe space
#
# f: formulas
@@ -375,7 +381,7 @@ returns the number of items in the range
#-------------------------------------------------------
sub NUM {
my $mask=&mask(@_);
- my $num= $#{@{grep(/$mask/,keys(%sheet_values))}}+1;
+ my $num= $#{@{grep(eval("/$mask/"),keys(%sheet_values))}}+1;
return $num;
}
@@ -392,7 +398,7 @@ sub BIN {
my ($low,$high,$lower,$upper)=@_;
my $mask=&mask($lower,$upper);
my $num=0;
- foreach (grep /$mask/,keys(%sheet_values)) {
+ foreach (grep eval("/$mask/"),keys(%sheet_values)) {
if (($sheet_values{$_}>=$low) && ($sheet_values{$_}<=$high)) {
$num++;
}
@@ -414,7 +420,7 @@ returns the sum of items in the range.
sub SUM {
my $mask=&mask(@_);
my $sum=0;
- foreach (grep /$mask/,keys(%sheet_values)) {
+ foreach (grep eval("/$mask/"),keys(%sheet_values)) {
$sum+=$sheet_values{$_};
}
return $sum;
@@ -435,7 +441,7 @@ sub MEAN {
my $mask=&mask(@_);
my $sum=0;
my $num=0;
- foreach (grep /$mask/,keys(%sheet_values)) {
+ foreach (grep eval("/$mask/"),keys(%sheet_values)) {
$sum+=$sheet_values{$_};
$num++;
}
@@ -460,14 +466,14 @@ compute the standard deviation of the it
sub STDDEV {
my $mask=&mask(@_);
my $sum=0; my $num=0;
- foreach (grep /$mask/,keys(%sheet_values)) {
+ foreach (grep eval("/$mask/"),keys(%sheet_values)) {
$sum+=$sheet_values{$_};
$num++;
}
unless ($num>1) { return undef; }
my $mean=$sum/$num;
$sum=0;
- foreach (grep /$mask/,keys(%sheet_values)) {
+ foreach (grep eval("/$mask/"),keys(%sheet_values)) {
$sum+=($sheet_values{$_}-$mean)**2;
}
return sqrt($sum/($num-1));
@@ -487,7 +493,7 @@ compute the product of the items in the
sub PROD {
my $mask=&mask(@_);
my $prod=1;
- foreach (grep /$mask/,keys(%sheet_values)) {
+ foreach (grep eval("/$mask/"),keys(%sheet_values)) {
$prod*=$sheet_values{$_};
}
return $prod;
@@ -507,7 +513,7 @@ compute the maximum of the items in the
sub MAX {
my $mask=&mask(@_);
my $max='-';
- foreach (grep /$mask/,keys(%sheet_values)) {
+ foreach (grep eval("/$mask/"),keys(%sheet_values)) {
unless ($max) { $max=$sheet_values{$_}; }
if (($sheet_values{$_}>$max) || ($max eq '-')) {
$max=$sheet_values{$_};
@@ -530,7 +536,7 @@ compute the minimum of the items in the
sub MIN {
my $mask=&mask(@_);
my $min='-';
- foreach (grep /$mask/,keys(%sheet_values)) {
+ foreach (grep eval("/$mask/"),keys(%sheet_values)) {
unless ($max) { $max=$sheet_values{$_}; }
if (($sheet_values{$_}<$min) || ($min eq '-')) {
$min=$sheet_values{$_};
@@ -555,7 +561,7 @@ sub SUMMAX {
my ($num,$lower,$upper)=@_;
my $mask=&mask($lower,$upper);
my @inside=();
- foreach (grep /$mask/,keys(%sheet_values)) {
+ foreach (grep eval("/$mask/"),keys(%sheet_values)) {
push (@inside,$sheet_values{$_});
}
@inside=sort(@inside);
@@ -582,7 +588,7 @@ sub SUMMIN {
my ($num,$lower,$upper)=@_;
my $mask=&mask($lower,$upper);
my @inside=();
- foreach (grep /$mask/,keys(%sheet_values)) {
+ foreach (grep eval("/$mask/"),keys(%sheet_values)) {
$inside[$#inside+1]=$sheet_values{$_};
}
@inside=sort(@inside);
@@ -672,12 +678,13 @@ sub calc {
return $lastcalc.': Maximum calculation depth exceeded';
}
}
- return '';
+ return 'okay';
}
# ------------------------------------------- End of "Inside of the safe space"
ENDDEFS
- $safeeval->reval($code);
+ $safeeval->reval($code);
+ }
$self->{'safe'} = $safeeval;
$self->{'root'} = $self->{'safe'}->root();
#
@@ -691,6 +698,9 @@ ENDDEFS
$self->{'safe'}->reval($initstring);
return $self;
}
+
+}
+
######################################################
=pod
@@ -704,6 +714,17 @@ ENDDEFS
######################################################
+=pod
+
+=item &mask($lower,$upper)
+
+Inputs: $lower and $upper, cell names ("X12" or "a150") or globs ("X*").
+
+Returns: Regular expression matching spreadsheet cells that are within
+the rectangle defined by $lower and $upper. Due to the nature of the
+regular expression this result must be used inside an eval().
+
+=cut
######################################################
{
@@ -718,78 +739,62 @@ sub mask {
}
$upper = $lower if (! defined($upper));
#
- my ($la,$ld) = ($lower=~/([A-Za-z]|\*)(\d+|\*)/);
- my ($ua,$ud) = ($upper=~/([A-Za-z]|\*)(\d+|\*)/);
+ my ($la,$ld) = ($lower=~/([A-z]|\*)(\d+|\*)/);
+ my ($ua,$ud) = ($upper=~/([A-z]|\*)(\d+|\*)/);
#
my $alpha='';
my $num='';
#
+ # Do not put parenthases around $alpha.
+ # $num depends on the value in $1.
if (($la eq '*') || ($ua eq '*')) {
- $alpha='[A-Za-z]';
+ $alpha='[A-z]';
} else {
- if (($la=~/[A-Z]/) && ($ua=~/[A-Z]/) ||
- ($la=~/[a-z]/) && ($ua=~/[a-z]/)) {
- $alpha='['.$la.'-'.$ua.']';
- } else {
- $alpha='['.$la.'-Za-'.$ua.']';
- }
- }
- if (($ld eq '*') || ($ud eq '*')) {
- $num='\d+';
+ if ($la gt $ua) {
+ my $tmp = $ua;
+ $ua = $la;
+ $la = $ua;
+ }
+ $alpha=qq/[$la-$ua]/;
+ }
+ if ($ld ne '*' && $ud ne '*') {
+ # Make sure $ld <= $ud
+ if ($ld > $ud) {
+ my $tmp = $ud;
+ $ud = $ld;
+ $ld = $tmp;
+ }
+ # Here we make a regular expression using some advanced regexp
+ # abilities.
+ # (\d+) will match the digits of the cell name and dump them in
+ # to $1
+ # (?(?{ ... code ...} pattern_if_true | pattern_if_false)) will
+ # choose pattern_if_true if { ... code ... } is true and
+ # pattern_if_false if { ... code ... } is false.
+ # In this case, pattern_if_true is empty. pattern_if_false is
+ # 'donotmatch' and will not match our cells because none of
+ # them end with donotmatch.
+ # Unfortunately, the use of this type of regular expression
+ # requires that each match be wrapped in an eval(). Search for
+ # $mask in this module for examples
+ $num = '(\d+)(?(?{$1>= '.$ld.' && $1<='.$ud.'})|donotmatch)';
} else {
- if (length($ld)!=length($ud)) {
- $num.='(';
- foreach ($ld=~m/\d/g) {
- $num.='['.$_.'-9]';
- }
- if (length($ud)-length($ld)>1) {
- $num.='|\d{'.(length($ld)+1).','.(length($ud)-1).'}';
- }
- $num.='|';
- foreach ($ud=~m/\d/g) {
- $num.='[0-'.$_.']';
- }
- $num.=')';
- } else {
- my @lda=($ld=~m/\d/g);
- my @uda=($ud=~m/\d/g);
- my $i;
- my $j=0;
- my $notdone=1;
- for ($i=0;($i<=$#lda)&&($notdone);$i++) {
- if ($lda[$i]==$uda[$i]) {
- $num.=$lda[$i];
- $j=$i;
- } else {
- $notdone=0;
- }
- }
- if ($j<$#lda-1) {
- $num.='('.$lda[$j+1];
- for ($i=$j+2;$i<=$#lda;$i++) {
- $num.='['.$lda[$i].'-9]';
- }
- if ($uda[$j+1]-$lda[$j+1]>1) {
- $num.='|['.($lda[$j+1]+1).'-'.($uda[$j+1]-1).']\d{'.
- ($#lda-$j-1).'}';
- }
- $num.='|'.$uda[$j+1];
- for ($i=$j+2;$i<=$#uda;$i++) {
- $num.='[0-'.$uda[$i].']';
- }
- $num.=')';
- } else {
- if ($lda[-1]!=$uda[-1]) {
- $num.='['.$lda[-1].'-'.$uda[-1].']';
- }
- }
- }
+ $num = '(\d+)';
}
- my $expression ='^'.$alpha.$num."\$";
+ my $expression = '^'.$alpha.$num.'$';
$memoizer{$key} = $expression;
return $expression;
}
+#
+# Debugging routine
+sub dump_memoized_values {
+ while (my ($key,$value) = each(%memoizer)) {
+ &Apache::lonnet::logthis('memoizer: '.$key.' = '.$value);
+ }
+ return;
+}
+
}
##
@@ -1134,9 +1139,49 @@ sub calcsheet {
# $self->logthis($self->get_errorlog());
%{$self->{'values'}} = %{$self->{'safe'}->varglob('sheet_values')};
# $self->logthis($self->get_errorlog());
+ if ($result ne 'okay') {
+ $self->set_calcerror($result);
+ }
return $result;
}
+sub set_badcalc {
+ my $self = shift();
+ $self->{'badcalc'} =1;
+ return;
+}
+
+sub badcalc {
+ my $self = shift;
+ if (exists($self->{'badcalc'}) && $self->{'badcalc'}) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+sub set_calcerror {
+ my $self = shift;
+ if (@_) {
+ $self->set_badcalc();
+ if (exists($self->{'calcerror'})) {
+ $self->{'calcerror'}.="\n".$_[0];
+ } else {
+ $self->{'calcerror'}.=$_[0];
+ }
+ }
+}
+
+sub calcerror {
+ my $self = shift;
+ if ($self->badcalc()) {
+ if (exists($self->{'calcerror'})) {
+ return $self->{'calcerror'};
+ }
+ }
+ return;
+}
+
###########################################################
##
## Output Helpers
@@ -1145,16 +1190,24 @@ sub calcsheet {
sub display {
my $self = shift;
my ($r) = @_;
- $self->compute($r);
my $outputmode = 'html';
- if ($ENV{'form.output_format'} =~ /^(html|excel|csv)$/) {
- $outputmode = $ENV{'form.output_format'};
+ foreach ($self->output_options()) {
+ if ($ENV{'form.output_format'} eq $_->{'value'}) {
+ $outputmode = $_->{'value'};
+ last;
+ }
}
if ($outputmode eq 'html') {
+ $self->compute($r);
$self->outsheet_html($r);
+ } elsif ($outputmode eq 'htmlclasslist') {
+ # No computation neccessary... This is kludgy
+ $self->outsheet_htmlclasslist($r);
} elsif ($outputmode eq 'excel') {
+ $self->compute($r);
$self->outsheet_excel($r);
} elsif ($outputmode eq 'csv') {
+ $self->compute($r);
$self->outsheet_csv($r);
}
$self->cleanup();
@@ -1164,6 +1217,18 @@ sub display {
############################################
## HTML output routines ##
############################################
+sub html_report_error {
+ my $self = shift();
+ my $Str = '';
+ if ($self->badcalc()) {
+ $Str = '<h3 style="color:red">'.
+ &mt('An error occurred while calculating this spreadsheet').
+ "</h3>\n".
+ '<pre>'.$self->calcerror()."</pre>\n";
+ }
+ return $Str;
+}
+
sub html_export_row {
my $self = shift();
my ($color) = @_;
@@ -1278,12 +1343,25 @@ sub html_header {
my $self = shift;
return '' if (! $ENV{'request.role.adv'});
return "<table>\n".
- '<tr><th align="center">Output Format</th><tr>'."\n".
- '<tr><td>'.&output_selector()."</td></tr>\n".
+ '<tr><th align="center">'.&mt('Output Format').'</th></tr>'."\n".
+ '<tr><td>'.$self->output_selector()."</td></tr>\n".
"</table>\n";
}
+##
+## Default output types are HTML, Excel, and CSV
+sub output_options {
+ my $self = shift();
+ return ({value => 'html',
+ description => 'HTML'},
+ {value => 'excel',
+ description => 'Excel'},
+ {value => 'csv',
+ description => 'Comma Separated Values'},);
+}
+
sub output_selector {
+ my $self = shift();
my $output_selector = '<select name="output_format" size="3">'."\n";
my $default = 'html';
if (exists($ENV{'form.output_format'})) {
@@ -1291,15 +1369,12 @@ sub output_selector {
} else {
$ENV{'form.output_format'} = $default;
}
- foreach (['html','HTML'],
- ['excel','Excel'],
- ['csv','Comma Seperated Values']) {
- my ($name,$description) = @{$_};
- $output_selector.=qq{<option value="$name"};
- if ($name eq $default) {
+ foreach ($self->output_options()) {
+ $output_selector.='<option value="'.$_->{'value'}.'"';
+ if ($_->{'value'} eq $default) {
$output_selector .= ' selected';
}
- $output_selector .= ">$description</option>\n";
+ $output_selector .= ">".&mt($_->{'description'})."</option>\n";
}
$output_selector .= "</select>\n";
return $output_selector;
@@ -1332,9 +1407,9 @@ sub create_excel_spreadsheet {
my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
if (! defined($workbook)) {
$r->log_error("Error creating excel spreadsheet $filename: $!");
- $r->print("Problems creating new Excel file. ".
+ $r->print(&mt("Problems creating new Excel file. ".
"This error has been logged. ".
- "Please alert your LON-CAPA administrator");
+ "Please alert your LON-CAPA administrator"));
return undef;
}
#
@@ -1348,11 +1423,25 @@ sub create_excel_spreadsheet {
return ($workbook,$filename);
}
+#
+# This routine is just a stub
+sub outsheet_htmlclasslist {
+ my $self = shift;
+ my ($r) = @_;
+ $r->print('<h2>'.&mt("This output is not supported").'</h2>');
+ $r->rflush();
+ return;
+}
+
sub outsheet_excel {
my $self = shift;
my ($r) = @_;
my $connection = $r->connection();
- $r->print("<h2>Preparing Excel Spreadsheet</h2>");
+ #
+ $r->print($self->html_report_error());
+ $r->rflush();
+ #
+ $r->print("<h2>".&mt('Preparing Excel Spreadsheet')."</h2>");
#
# Create excel worksheet
my ($workbook,$filename) = $self->create_excel_spreadsheet($r);
@@ -1394,6 +1483,10 @@ sub outsheet_csv {
my $self = shift;
my ($r) = @_;
my $connection = $r->connection();
+ #
+ $r->print($self->html_report_error());
+ $r->rflush();
+ #
my $csvdata = '';
my @Values;
#
@@ -1404,9 +1497,9 @@ sub outsheet_csv {
my $file;
unless ($file = Apache::File->new('>'.'/home/httpd'.$filename)) {
$r->log_error("Couldn't open $filename for output $!");
- $r->print("Problems occured in writing the csv file. ".
+ $r->print(&mt("Problems occured in writing the csv file. ".
"This error has been logged. ".
- "Please alert your LON-CAPA administrator.");
+ "Please alert your LON-CAPA administrator."));
$r->print("<pre>\n".$csvdata."</pre>\n");
return 0;
}
@@ -1422,7 +1515,7 @@ sub outsheet_csv {
# Close the csv file
close($file);
$r->print('<br /><br />'.
- '<a href="'.$filename.'">Your CSV spreadsheet.</a>'."\n");
+ '<a href="'.$filename.'">'.&mt('Your CSV spreadsheet.').'</a>'."\n");
#
return 1;
}
@@ -1613,6 +1706,9 @@ sub set_row_numbers {
##
sub exportrow {
my $self = shift;
+ if (exists($self->{'badcalc'}) && $self->{'badcalc'}) {
+ return ();
+ }
my @exportarray;
foreach my $column (@UC_Columns) {
push(@exportarray,$self->value($column.'0'));
@@ -1748,9 +1844,9 @@ sub othersheets {
$self->{'cdom'}, $self->{'cnum'});
my ($tmp) = keys(%results);
if ($tmp =~ /^(con_lost|error|no_such_host)/i ) {
- @alternatives = ('Default');
+ @alternatives = (&mt('Default'));
} else {
- @alternatives = ('Default', sort (keys(%results)));
+ @alternatives = (&mt('Default'), sort (keys(%results)));
}
return @alternatives;
}