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# Xerl (c) 2005-2011,2013 Dipl.-Inform. (FH) Paul C. Buetow
#
# E-Mail: xerl@dev.buetow.org WWW: http://xerl.buetow.org
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of buetow.org nor the names of its contributors may
# be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED Paul C. Buetow ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT Paul C. Buetow BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
package Xerl::Page::Content;
use strict;
use warnings;
use Xerl::Base;
use Xerl::XML::Reader;
use Xerl::XML::Element;
use Xerl::Page::Rules;
use Xerl::Page::Configure;
sub parse($) {
my Xerl::Page::Content $self = $_[0];
my Xerl::Page::Configure $config = $self->get_config();
my Xerl::XML::Reader $xmlcontent = Xerl::XML::Reader->new(
path => $config->get_templatepath(),
config => $config
);
if ( -1 == $xmlcontent->open() ) {
$config->set_finish_request(1);
return undef;
}
$xmlcontent->parse();
my Xerl::Page::Rules $rules = Xerl::Page::Rules->new( config => $config );
$rules->parse( $config->get_xmlconfigrootobj() )
unless $config->exists('noparse');
$config->insertxmlvars( $config->get_xmlconfigrootobj() );
$self->insertrules( $rules, $xmlcontent->get_root() );
return undef;
}
sub insertrules($$$$) {
my Xerl::Page::Content $self = $_[0];
my Xerl::Page::Rules $rules = $_[1];
my Xerl::XML::Element $element = $_[2];
# Start inserting rules at <content>
$element = $element->starttag('content');
# If there is no <content>-tag, dont use a rule!
return unless defined $element;
my @content;
my $params = $element->get_params();
unshift @content, "Content-Type: $params->{type}\n\n"
if ref $params eq 'HASH' and exists $params->{type};
push @content, $self->_insertrules( $rules, $element );
$self->set_content( \@content );
return undef;
}
sub _insertrules($$$) {
my Xerl::Page::Content $self = $_[0];
my Xerl::Page::Rules $rules = $_[1];
my Xerl::XML::Element $element = $_[2];
my Xerl::Page::Configure $config = $self->get_config();
my $nonewlines = 0;
#$element->print();
#
# Don't interate through the XML childs if we have a leaf node.
return () unless ref $element->get_array() eq 'ARRAY';
my ( $name, $rule, @content, $text, $params );
for my $succ ( @{ $element->get_array() } ) {
$name = $succ->get_name();
$text = $succ->get_text();
$params = $succ->get_params();
# Remove leading and ending whitespaces, also ending newlines.
$text =~ s/^ *(.*)( |\n)*$/$1/g;
unless ( ref( $rule = $rules->getval($name) ) eq 'ARRAY' ) {
if ( lc $name eq 'noop' ) {
if ( ref $succ->get_array() eq 'ARRAY' ) {
push @content, $self->_insertrules( $rules, $succ );
}
else {
push @content, "$text\n";
}
}
elsif ( lc $name eq 'tag' ) {
push @content, "<$text>\n";
}
elsif ( lc $name eq 'perl' ) {
# Perl content will be interpreted by Xerl::Page::Templates::print later
push @content, '<perl>', $text, '</perl>';
}
elsif ( lc $name eq 'navigation' ) {
my $menus = $config->get_menuobj()->get_array();
if ( ref $menus eq 'ARRAY' ) {
push @content, $self->_insertrules( $rules, $_ ) for @$menus;
}
}
else {
# No rule available, use the tag unmodified!
$name =~ s/^=//o; # Remove the leading =
if ( $succ->get_single() ) {
push @content, "<$name" . ( $succ->params_str() || '' ) . " />\n"
}
else {
push @content,
"<$name" . ( $succ->params_str() || '' ) . '>',
$self->_insertrules( $rules, $succ ), $text, "</$name>\n";
}
}
}
else {
# Get a local copy of lrule, because orule may be modified.
# And then insert special vars if required:
# @@text@@ => Text content of the current tag.
my $ruleparams = $rule->[2];
$nonewlines = 1 if exists $ruleparams->{nonewlines};
my ( $orule, $crule ) = ( $rule->[0], $rule->[1] );
$self->_insert_special_vars( $rules, $succ, \$orule );
$self->_insert_special_vars( $rules, $succ, \$crule );
chomp $orule;
# Parse for known tag params.
if ( ref $params eq 'HASH' ) {
Xerl::Page::Templates::PARSELINE( $config, '%%', \$text );
# <tag basename='yes'>path/to/file.bla</tag> => <tag>file.bla</tag>
$text =~ s#.*/(.*)$#$1# if lc $params->{basename} eq 'yes';
# <tag cut='?'>foo.bar.tld?options</tag> => <tag>?options</tag>
if ( exists $params->{cut} ) {
my $cut = quotemeta $params->{cut};
$text =~ s/.*$cut(.*)$/$1/o;
}
$text .= $params->{addback}
if exists $params->{addback};
$text = $params->{addfront} . $text
if exists $params->{addfront};
}
my $oadd =
exists $ruleparams->{addfront}
? '<' . $ruleparams->{addfront}
: '';
my $cadd =
exists $ruleparams->{addback} ? $ruleparams->{addback} . '>' : '';
push @content, $orule, $oadd, $self->_insertrules( $rules, $succ ),
$text, $cadd, $crule;
}
}
return $nonewlines ? map { s/\n/ /go; $_ } @content : @content;
}
sub _insert_special_vars($$$$) {
my Xerl::Page::Content $self = $_[0];
my Xerl::Page::Rules $rules = $_[1];
my Xerl::XML::Element $element = $_[2];
my Xerl::Page::Configure $config = $self->get_config();
my $rtext = $_[3];
$$rtext =~ s/@\@text\@\@/$_=$element->get_text();chomp;$_/geo;
$$rtext =~ s/@\@ln\@\@//go;
#$$rtext =~ s/@\@link\@\@/$element->get_params()->{link}.'$$params$$'/geo;
if ( $$rtext =~ /@\@(.*?)\@\@/ ) {
my $params = $element->get_params();
return unless ref $params eq 'HASH';
$$rtext =~ s/@\@(.*?)\@\@/$params->{$1}||''/geo;
}
return undef;
}
1;
|
