version 1.44, 2005/05/12 22:42:57
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version 1.46, 2005/05/13 21:14:46
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Line 330 sub initialize_safe_space {
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Line 330 sub initialize_safe_space {
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$safehole->wrap(\&mask,$safeeval,'&mask'); |
$safehole->wrap(\&mask,$safeeval,'&mask'); |
$safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&logthis'); |
$safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&logthis'); |
$safeeval->share('$@'); |
$safeeval->share('$@'); |
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# Holds the (computed, final) values for the sheet |
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# This is only written to by &calc, the spreadsheet computation routine. |
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# It is read by many functions |
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$safeeval->share('%sheet_values'); |
my $code=<<'ENDDEFS'; |
my $code=<<'ENDDEFS'; |
# ---------------------------------------------------- Inside of the safe space |
# ---------------------------------------------------- Inside of the safe space |
# |
# |
Line 339 sub initialize_safe_space {
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Line 343 sub initialize_safe_space {
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# c: preloaded constants (A-column) |
# c: preloaded constants (A-column) |
# rl: row label |
# rl: row label |
# os: other spreadsheets (for student spreadsheet only) |
# os: other spreadsheets (for student spreadsheet only) |
undef %sheet_values; # Holds the (computed, final) values for the sheet |
undef %t; # Holds the forumlas of the spreadsheet to be computed. Set in |
# This is only written to by &calc, the spreadsheet computation routine. |
# &sett, which does the translation of strings like C5 into the value |
# It is read by many functions |
# in C5. Used in &calc - %t holds the values that are actually eval'd. |
undef %t; # Holds the values of the spreadsheet temporarily. Set in &sett, |
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# which does the translation of strings like C5 into the value in C5. |
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# Used in &calc - %t holds the values that are actually eval'd. |
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undef %f; # Holds the formulas for each cell. This is the users |
undef %f; # Holds the formulas for each cell. This is the users |
# (spreadsheet authors) data for each cell. |
# (spreadsheet authors) data for each cell. |
undef %c; # Holds the constants for a sheet. In the assessment |
undef %c; # Holds the constants for a sheet. In the assessment |
Line 670 sub MAXPARM {
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Line 671 sub MAXPARM {
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return $max; |
return $max; |
} |
} |
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#------------------------------------------------------- |
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=pod |
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=item &get_values($lower,$upper) |
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Inputs: $lower and $upper, cell names ("X12" or "a150") or globs ("X*"). |
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Returns: an array ref of the values of the cells that exist in the |
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speced range |
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=cut |
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#------------------------------------------------------- |
sub get_values { |
sub get_values { |
my ($lower,$upper)=@_; |
my ($lower,$upper)=@_; |
my $mask=&mask(@_); |
$upper = $lower if (! defined($upper)); |
my @values; |
my @values; |
foreach (grep eval("/$mask/"),keys(%sheet_values)) { |
my ($la,$ld) = ($lower=~/([A-z]|\*)(\d+|\*)/); |
push(@values,$sheet_values{$_}); |
my ($ua,$ud) = ($upper=~/([A-z]|\*)(\d+|\*)/); |
} |
my ($alpha,$num); |
return \@values; |
if ($ld ne '*' && $ud ne '*') { |
if (0) { |
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# perhaps creating a list of possible cells and looking if they exist |
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# would be faster somtimes? |
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&logthis("mask is ".$mask); |
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my @alpha; |
my @alpha; |
if (($la eq '*') || ($ua eq '*')) { |
if (($la eq '*') || ($ua eq '*')) { |
@alpha=('A'..'z'); |
@alpha=('A'..'z'); |
} else { |
} else { |
if ($la gt $ua) { |
if ($la gt $ua) { ($la,$ua)=($ua,$la); } |
my $tmp = $ua; |
if ((lc($la) ne $la) && (lc($ua) eq $ua)) { |
$ua = $la; |
@alpha=($la..'Z','a'..$ua); |
$la = $ua; |
} else { |
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@alpha=($la..$ua); |
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} |
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} |
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my @num=($ld..$ud); |
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foreach my $a (@alpha) { |
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foreach my $n (@num) { |
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if (exists($sheet_values{$a.$n})) { |
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push(@values,$sheet_values{$a.$n}); |
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} |
} |
} |
$alpha=($la..$ua); |
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} |
} |
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return \@values; |
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} else { |
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$num = '(\d+)'; |
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} |
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if (($la eq '*') || ($ua eq '*')) { |
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$alpha='[A-z]'; |
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} else { |
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if ($la gt $ua) { ($la,$ua)=($ua,$la); } |
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$alpha=qq/[$la-$ua]/; |
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} |
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my $expression = '^'.$alpha.$num.'$'; |
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foreach (grep /$expression/,keys(%sheet_values)) { |
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push(@values,$sheet_values{$_}); |
} |
} |
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return \@values; |
} |
} |
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sub calc { |
sub calc { |
%sheet_values = %t; |
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my $notfinished = 1; |
my $notfinished = 1; |
my $lastcalc = ''; |
my $lastcalc = ''; |
my $depth = 0; |
my $depth = 0; |
Line 758 ENDDEFS
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Line 790 ENDDEFS
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###################################################### |
###################################################### |
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###################################################### |
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=pod |
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=item &mask($lower,$upper) |
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Inputs: $lower and $upper, cell names ("X12" or "a150") or globs ("X*"). |
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Returns: Regular expression matching spreadsheet cells that are within |
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the rectangle defined by $lower and $upper. Due to the nature of the |
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regular expression this result must be used inside an eval(). |
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=cut |
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###################################################### |
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{ |
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my %memoizer; |
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sub mask { |
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my ($lower,$upper)=@_; |
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my $key = $lower.'_'.$upper; |
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if (exists($memoizer{$key})) { |
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return $memoizer{$key}; |
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} |
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$upper = $lower if (! defined($upper)); |
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# |
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my ($la,$ld) = ($lower=~/([A-z]|\*)(\d+|\*)/); |
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my ($ua,$ud) = ($upper=~/([A-z]|\*)(\d+|\*)/); |
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# |
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my $alpha=''; |
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my $num=''; |
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# |
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# Do not put parenthases around $alpha. |
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# $num depends on the value in $1. |
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if (($la eq '*') || ($ua eq '*')) { |
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$alpha='[A-z]'; |
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} else { |
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if ($la gt $ua) { |
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my $tmp = $ua; |
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$ua = $la; |
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$la = $ua; |
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} |
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$alpha=qq/[$la-$ua]/; |
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} |
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if ($ld ne '*' && $ud ne '*') { |
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# Make sure $ld <= $ud |
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if ($ld > $ud) { |
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my $tmp = $ud; |
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$ud = $ld; |
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$ld = $tmp; |
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} |
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# Here we make a regular expression using some advanced regexp |
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# abilities. |
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# (\d+) will match the digits of the cell name and dump them in |
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# to $1 |
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# (?(?{ ... code ...} pattern_if_true | pattern_if_false)) will |
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# choose pattern_if_true if { ... code ... } is true and |
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# pattern_if_false if { ... code ... } is false. |
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# In this case, pattern_if_true is empty. pattern_if_false is |
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# 'donotmatch' and will not match our cells because none of |
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# them end with donotmatch. |
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# Unfortunately, the use of this type of regular expression |
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# requires that each match be wrapped in an eval(). Search for |
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# $mask in this module for examples |
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$num = '(\d+)(?(?{$1>= '.$ld.' && $1<='.$ud.'})|donotmatch)'; |
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} else { |
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$num = '(\d+)'; |
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} |
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my $expression = '^'.$alpha.$num.'$'; |
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$memoizer{$key} = $expression; |
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return $expression; |
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} |
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# |
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# Debugging routine |
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sub dump_memoized_values { |
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while (my ($key,$value) = each(%memoizer)) { |
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&Apache::lonnet::logthis('memoizer: '.$key.' = '.$value); |
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} |
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return; |
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} |
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} |
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## |
## |
## sub add_hash_to_safe {} # spreadsheet, would like to destroy |
## sub add_hash_to_safe {} # spreadsheet, would like to destroy |
## |
## |
Line 923 sub expandnamed {
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Line 869 sub expandnamed {
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sub sett { |
sub sett { |
my $self = shift; |
my $self = shift; |
my %t=(); |
my %t=(); |
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undef(%Apache::Spreadsheet::sheet_values); |
# |
# |
# Deal with the template row |
# Deal with the template row |
foreach my $col ($self->template_cells()) { |
foreach my $col ($self->template_cells()) { |
Line 955 sub sett {
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Line 902 sub sett {
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} elsif ( $col =~ /^[A-Z]$/ ) { |
} elsif ( $col =~ /^[A-Z]$/ ) { |
if ($formula !~ /^\!/ && exists($self->{'constants'}->{$cell}) |
if ($formula !~ /^\!/ && exists($self->{'constants'}->{$cell}) |
&& $self->{'constants'}->{$cell} ne '') { |
&& $self->{'constants'}->{$cell} ne '') { |
my $data = $self->{'constants'}->{$cell}; |
$Apache::Spreadsheet::sheet_values{$cell}= |
$t{$cell} = $data; |
eval($self->{'constants'}->{$cell}); |
} |
} |
} else { # $row > 1 and $col =~ /[a-z] |
} else { # $row > 1 and $col =~ /[a-z] |
$t{$cell}=$formula; |
$t{$cell}=$formula; |