shift->_zconfig->stream_utils->stream_concat(@_)
}
+sub _flatten_stream_of_streams {
+ shift->_zconfig->stream_utils->flatten_stream_of_streams(@_)
+}
+
sub set_attribute {
- my ($self, $args) = @_;
- my ($name, $value) = @{$args}{qw(name value)};
+ my $self = shift;
+ my ($name, $value) = $self->_parse_attribute_args(@_);
sub {
my $a = (my $evt = $_[0])->{attrs};
my $e = exists $a->{$name};
};
}
+sub _parse_attribute_args {
+ my $self = shift;
+ # allow ->add_attribute(name => 'value')
+ # or ->add_attribute({ name => 'name', value => 'value' })
+ my ($name, $value) = @_ > 1 ? @_ : @{$_[0]}{qw(name value)};
+ return ($name, $self->_zconfig->parser->html_escape($value));
+}
+
sub add_attribute {
- my ($self, $args) = @_;
- my ($name, $value) = @{$args}{qw(name value)};
+ my $self = shift;
+ my ($name, $value) = $self->_parse_attribute_args(@_);
sub {
my $a = (my $evt = $_[0])->{attrs};
my $e = exists $a->{$name};
sub remove_attribute {
my ($self, $args) = @_;
- my $name = $args->{name};
+ my $name = (ref($args) eq 'HASH') ? $args->{name} : $args;
sub {
my $a = (my $evt = $_[0])->{attrs};
return $evt unless exists $a->{$name};
sub collect {
my ($self, $options) = @_;
- my ($into, $passthrough, $content, $filter) =
- @{$options}{qw(into passthrough content filter)};
+ my ($into, $passthrough, $content, $filter, $flush_before) =
+ @{$options}{qw(into passthrough content filter flush_before)};
sub {
my ($evt, $stream) = @_;
# We wipe the contents of @$into here so that other actions depending
}
die "Never saw closing </${name}> before end of source";
});
- return ($passthrough||$content) ? [ $evt, $collector ] : $collector;
+ if ($flush_before) {
+ if ($passthrough||$content) {
+ $evt = { %$evt, flush => 1 };
+ } else {
+ $evt = { type => 'EMPTY', flush => 1 };
+ }
+ }
+ return ($passthrough||$content||$flush_before)
+ ? [ $evt, $collector ]
+ : $collector;
};
}
my ($evt, $stream) = @_;
my $emit = $self->_stream_from_proto($replace_with);
my $coll = &$coll_proto;
+ # if we're replacing the contents of an in place close
+ # then we need to handle that here
+ if ($options->{content}
+ && ref($coll) eq 'HASH'
+ && $coll->{is_in_place_close}
+ ) {
+ my $close = $stream->next;
+ # shallow copy and nuke in place and raw (to force smart print)
+ $_ = { %$_ }, delete @{$_}{qw(is_in_place_close raw)} for ($coll, $close);
+ $emit = $self->_stream_concat(
+ $emit,
+ $self->_stream_from_array($close),
+ );
+ }
# For a straightforward replace operation we can, in fact, do the emit
# -before- the collect, and my first cut did so. However in order to
# use the captured content in generating the new content, we need
# for the difference to be noticeable
return
($coll
- ? (ref $coll eq 'ARRAY'
+ ? (ref $coll eq 'ARRAY' # [ event, stream ]
? [ $coll->[0], $self->_stream_concat($coll->[1], $emit) ]
- : $self->_stream_concat($coll, $emit)
+ : (ref $coll eq 'HASH' # event or stream?
+ ? [ $coll, $emit ]
+ : $self->_stream_concat($coll, $emit))
)
: $emit
);
# hasn't been populated yet - but we can test @between in the
# map routine because it has been by then and that saves us doing
# the extra stream construction if we don't need it.
- if ($repeat_between) {
- $s->map(sub {
- local $_ = $self->_stream_from_array(@into);
- (@between && $s->peek)
- ? $self->_stream_concat(
- $_[0]->($_), $self->_stream_from_array(@between)
- )
- : $_[0]->($_)
- })
- ->flatten;
- } else {
- $s->map(sub {
- local $_ = $self->_stream_from_array(@into);
- $_[0]->($_)
+ $self->_flatten_stream_of_streams(do {
+ if ($repeat_between) {
+ $s->map(sub {
+ local $_ = $self->_stream_from_array(@into);
+ (@between && $s->peek)
+ ? $self->_stream_concat(
+ $_[0]->($_), $self->_stream_from_array(@between)
+ )
+ : $_[0]->($_)
+ })
+ } else {
+ $s->map(sub {
+ local $_ = $self->_stream_from_array(@into);
+ $_[0]->($_)
})
- ->flatten;
- }
+ }
+ })
};
$self->replace($repeater, $options);
}
}
1;
+
+=head1 NAME
+
+HTML::Zoom::FilterBuilder - Add Filters to a Stream
+
+=head1 SYNOPSIS
+
+ use HTML::Zoom;
+ my $root = HTML::Zoom
+ ->from_html(<<MAIN);
+ <html>
+ <head>
+ <title>Default Title</title>
+ </head>
+ <body>
+ Default Content
+ </body>
+ </html>
+ MAIN
+
+ my $body = HTML::Zoom
+ ->from_html(<<BODY);
+ <div id="stuff">
+ <p>Stuff</p>
+ </div>
+ BODY
+
+ my $output = $root
+ ->select('title')
+ ->replace_content('Hello World')
+ ->select('body')
+ ->replace_content($body)
+ ->to_html;
+
+will produce:
+
+=begin testinfo
+
+ my $expect = <<HTML;
+
+=end testinfo
+
+ <html>
+ <head>
+ <title>Hello World</title>
+ </head>
+ <body><div id="stuff">
+ <p>Stuff</p>
+ </div>
+ </body>
+ </html>
+
+=begin testinfo
+
+ HTML
+ is($output, $expect, 'Synopsis code works ok');
+
+=end testinfo
+
+=head1 DESCRIPTION
+
+Given a L<HTML::Zoom> stream, provide methods to apply filters which
+alter the content of that stream.
+
+=head1 METHODS
+
+This class defines the following public API
+
+=head2 set_attribute
+
+ TBD
+
+=head2 add_attribute
+
+ TBD
+
+=head2 remove_attribute
+
+ TBD
+
+=head2 collect
+
+ TBD
+
+=head2 collect_content
+
+ TBD
+
+=head2 add_before
+
+ TBD
+
+=head2 add_after
+
+ TBD
+
+=head2 prepend_content
+
+ TBD
+
+=head2 append_content
+
+ TBD
+
+=head2 replace
+
+ TBD
+
+=head2 replace_content
+
+Given a L<HTML::Zoom/select> result, replace the content with a string, array
+or another L<HTML::Zoom> object.
+
+=head2 repeat
+
+ TBD
+
+=head2 repeat_content
+
+ TBD
+
+=head1 ALSO SEE
+
+L<HTML::Zoom>
+
+=head1 AUTHORS
+
+See L<HTML::Zoom> for authors.
+
+=head1 LICENSE
+
+See L<HTML::Zoom> for the license.
+
+=cut
+
projects / catagits/HTML-Zoom.git / blobdiff