package HTML::Zoom::StreamBase;
-use strict;
-use warnings FATAL => 'all';
+use strictures 1;
+use HTML::Zoom::TransformBuilder;
+
+sub _zconfig { shift->{_zconfig} }
+
+sub peek {
+ my ($self) = @_;
+ if (exists $self->{_peeked}) {
+ return ($self->{_peeked});
+ }
+ if (my ($peeked) = $self->_next(1)) {
+ return ($self->{_peeked} = $peeked);
+ }
+ return;
+}
+
+sub next {
+ my ($self) = @_;
+
+ # peeked entry so return that
+
+ if (exists $self->{_peeked}) {
+ if (my $peeked_from = delete $self->{_peeked_from}) {
+ $peeked_from->next;
+ }
+ return (delete $self->{_peeked});
+ }
+
+ $self->_next;
+}
+
+
+sub flatten {
+ my $self = shift;
+ require HTML::Zoom::FlattenedStream;
+ HTML::Zoom::FlattenedStream->new({
+ source => $self,
+ zconfig => $self->_zconfig
+ });
+}
+
+sub map {
+ my ($self, $mapper) = @_;
+ require HTML::Zoom::MappedStream;
+ HTML::Zoom::MappedStream->new({
+ source => $self, mapper => $mapper, zconfig => $self->_zconfig
+ });
+}
+
+sub with_filter {
+ my ($self, $selector, $filter) = @_;
+ my $match = $self->_parse_selector($selector);
+ $self->_zconfig->stream_utils->wrap_with_filter($self, $match, $filter);
+}
+
+sub with_transform {
+ my ($self, $transform) = @_;
+ $transform->apply_to_stream($self);
+}
+
+sub select {
+ my ($self, $selector) = @_;
+ return HTML::Zoom::TransformBuilder->new({
+ zconfig => $self->_zconfig,
+ selector => $selector,
+ filters => [],
+ proto => $self,
+ });
+}
+
+sub then {
+ my ($self) = @_;
+ # see notes in HTML/Zoom.pm for why this needs to be fixed
+ $self->select($self->transform->selector);
+}
+
+sub apply {
+ my ($self, $code) = @_;
+ local $_ = $self;
+ $self->$code;
+}
+
+sub apply_if {
+ my ($self, $predicate, $code) = @_;
+ if($predicate) {
+ local $_ = $self;
+ $self->$code;
+ }
+ else {
+ $self;
+ }
+}
+
+sub to_html {
+ my ($self) = @_;
+ $self->_zconfig->producer->html_from_stream($self);
+}
+
+sub AUTOLOAD {
+ my ($self, $selector, @args) = @_;
+ my $sel = $self->select($selector);
+ my $meth = our $AUTOLOAD;
+ $meth =~ s/.*:://;
+ if (ref($selector) eq 'HASH') {
+ my $ret = $self;
+ $ret = $ret->_do($_, $meth, @{$selector->{$_}}) for keys %$selector;
+ $ret;
+ } else {
+ $self->_do($selector, $meth, @args);
+ }
+}
+
+sub _do {
+ my ($self, $selector, $meth, @args) = @_;
+ return $self->select($selector)->$meth(@args);
+}
+
+sub DESTROY {}
1;