+sub _get_loop_variable {
+ my $self = shift;
+ my $var = shift;
+ my $get_array = shift;
+ my @indices = @_;
+
+ my $form = $self->{form};
+ my $value;
+
+ if (($get_array || @indices) && (ref $form->{TEMPLATE_ARRAYS} eq 'HASH') && (ref $form->{TEMPLATE_ARRAYS}->{$var} eq 'ARRAY')) {
+ $value = $form->{TEMPLATE_ARRAYS}->{$var};
+ } else {
+ $value = $form->{$var};
+ }
+
+ for (my $i = 0; $i < scalar(@indices); $i++) {
+ last unless (ref($value) eq "ARRAY");
+ $value = $value->[$indices[$i]];
+ }
+
+ return $value;
+}
+
+sub substitute_vars {
+ my ($self, $text, @indices) = @_;
+
+ my $form = $self->{"form"};
+
+ while ($text =~ /$self->{substitute_vars_re}/) {
+ my ($tag_pos, $tag_len) = ($-[0], $+[0] - $-[0]);
+ my ($var, @options) = split(/\s+/, $1);
+
+ my $value = $self->_get_loop_variable($var, 0, @indices);
+ $value = $self->format_string($value) unless (grep(/^NOESCAPE$/, @options));
+
+ substr($text, $tag_pos, $tag_len, $value);
+ }
+
+ return $text;
+}
+