--- loncom/homework/chemresponse.pm 2003/10/21 20:58:29 1.22 +++ loncom/homework/chemresponse.pm 2004/09/27 20:59:21 1.39 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # chemical equation style response # -# $Id: chemresponse.pm,v 1.22 2003/10/21 20:58:29 albertel Exp $ +# $Id: chemresponse.pm,v 1.39 2004/09/27 20:59:21 www Exp $ # # Copyright Michigan State University Board of Trustees # @@ -35,7 +35,34 @@ BEGIN { &Apache::lonxml::register('Apache::chemresponse',('organicresponse','organicstructure','reactionresponse')); } -sub seperate_jme_window { +sub chem_standard_order { + my ($reaction) = @_; + my ($re,$pr) = split(/->|<=>/,$reaction); + my @reactants = split(/\s\+/,$re); + my @products = split(/\s\+/,$pr); + foreach my $substance (@reactants,@products) { + $substance =~ s/(\^\d*)\s+/$1_/g; # protect superscript space + $substance =~ s/\s*//g; # strip whitespace + $substance =~ s/_/ /g; # restore superscript space + } + @reactants = sort @reactants; + @products = sort @products; + my $standard = ''; + foreach my $substance (@reactants) { + $standard .= $substance; + $standard .= ' + '; + } + $standard =~ s/ \+ $//; # get rid of trailing plus sign + $standard .= ' -> '; + foreach my $substance (@products) { + $standard .= $substance; + $standard .= ' + '; + } + $standard =~ s/ \+ $//; # get rid of trailing plus sign + return $standard; +} + +sub separate_jme_window { my ($smile_input,$jme_input,$molecule,$options)=@_; my $smilesection; if (defined($smile_input)) { @@ -75,7 +102,7 @@ function openHelpWindow() {