+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;
+}
+
+sub _parse_block_if {
+ $main::lxdebug->enter_sub();
+
+ my $self = shift;
+ my $contents = shift;
+ my $new_contents = shift;
+ my $pos_if = shift;
+ my @indices = @_;
+
+ $$new_contents .= $self->substitute_vars(substr($$contents, 0, $pos_if), @indices);
+ substr($$contents, 0, $pos_if) = "";
+
+ if ($$contents !~ m/^$self->{tag_start_qm}if
+ \s*
+ (not\b|\!)? # $1 -- Eventuelle Negierung
+ \s+
+ (\b.+?\b) # $2 -- Name der zu überprüfenden Variablen
+ ( # $3 -- Beginn des optionalen Vergleiches
+ \s*
+ ([!=]) # $4 -- Negierung des Vergleiches speichern
+ ([=~]) # $5 -- Art des Vergleiches speichern
+ \s*
+ ( # $6 -- Gequoteter String oder Bareword
+ $self->{quot_re}
+ (.*?)(?<!\\) # $7 -- Gequoteter String -- direkter Vergleich mit eq bzw. ne oder Patternmatching; Escapete Anführungs als Teil des Strings belassen
+ $self->{quot_re}
+ |
+ (\b.+?\b) # $8 -- Bareword -- als Index für $form benutzen
+ )
+ )?
+ \s*
+ $self->{tag_end_qm}
+ /x) {
+ $self->{"error"} = "Malformed $self->{tag_start}if$self->{tag_end}.";
+ $main::lxdebug->leave_sub();
+ return undef;
+ }
+
+ my $not = $1;
+ my $var = $2;
+ my $operator_neg = $4; # '=' oder '!' oder undef, wenn kein Vergleich erkannt
+ my $operator_type = $5; # '=' oder '~' für Stringvergleich oder Regex
+ my $quoted_word = $7; # nur gültig, wenn quoted string angegeben (siehe unten); dann "value" aus <%if var == "value" %>
+ my $bareword = $8; # undef, falls quoted string angegeben wurde; andernfalls "othervar" aus <%if var == othervar %>
+
+ $not = !$not if ($operator_neg && $operator_neg eq '!');
+
+ substr($$contents, 0, length($&)) = "";
+
+ my $block;
+ ($block, $$contents) = $self->find_end($$contents, 0, $var, $not);
+ if (!$block) {
+ $self->{"error"} = "Unclosed $self->{tag_start}if$self->{tag_end}." unless ($self->{"error"});
+ $main::lxdebug->leave_sub();
+ return undef;
+ }
+
+ my $value = $self->_get_loop_variable($var, 0, @indices);
+ my $hit = 0;
+
+ if ($operator_type) {
+ my $compare_to = $bareword ? $self->_get_loop_variable($bareword, 0, @indices) : $quoted_word;
+ if ($operator_type eq '=') {
+ $hit = ($not && !($value eq $compare_to)) || (!$not && ($value eq $compare_to));
+ } else {
+ $hit = ($not && !($value =~ m/$compare_to/i)) || (!$not && ($value =~ m/$compare_to/i));
+ }
+
+ } else {
+ $hit = ($not && ! $value) || (!$not && $value);
+ }
+
+ if ($hit) {
+ my $new_text = $self->parse_block($block, @indices);
+ if (!defined($new_text)) {
+ $main::lxdebug->leave_sub();
+ return undef;
+ }
+ $$new_contents .= $new_text;
+ }
+
+ $main::lxdebug->leave_sub();
+
+ return 1;
+}
+