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class-xhtml11.php
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class-xhtml11.php
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<?php
/**
* @author Pressbooks <code@pressbooks.com>
* @license GPLv2 (or any later version)
*/
namespace Pressbooks\Modules\Export\Xhtml;
use Pressbooks\Modules\Export\Export;
use Pressbooks\Sanitize;
use function Pressbooks\Sanitize\clean_filename;
class Xhtml11 extends Export {
/**
* Timeout in seconds.
* Used with wp_remote_get()
*
* @var int
*/
public $timeout = 90;
/**
* Service URL
*
* @var string
*/
public $url;
/**
* Endnotes storage container.
* Use when overriding the footnote shortcode.
*
* @var array
*/
protected $endnotes = [];
/**
* We forcefully reorder some of the front-matter types to respect the Chicago Manual of Style.
* Keep track of where we are using this variable.
*
* @var int
*/
protected $frontMatterPos = 1;
/**
* Sometimes the user will omit an introduction so we must inject the style in either the first
* part or the first chapter ourselves.
*
* @var bool
*/
protected $hasIntroduction = false;
/**
* Main language of document, two letter code
*
* @var string
*/
protected $lang = 'en';
/**
* @param array $args
*/
function __construct( array $args ) {
// Some defaults
if ( ! defined( 'PB_XMLLINT_COMMAND' ) ) {
define( 'PB_XMLLINT_COMMAND', '/usr/bin/xmllint' );
}
$defaults = [
'endnotes' => false,
];
$r = wp_parse_args( $args, $defaults );
// Set the access protected "format/xhtml" URL with a valid timestamp and NONCE
$timestamp = time();
$md5 = $this->nonce( $timestamp );
$this->url = home_url() . "/format/xhtml?timestamp={$timestamp}&hashkey={$md5}";
// Append endnotes to URL?
if ( $r['endnotes'] ) {
$this->url .= '&endnotes=true';
}
// HtmLawed: id values not allowed in input
foreach ( $this->reservedIds as $val ) {
$fixme[ $val ] = 1;
}
if ( isset( $fixme ) ) {
$GLOBALS['hl_Ids'] = $fixme;
}
}
/**
* Create $this->outputPath
*
* @return bool
*/
function convert() {
// Get XHTML
$output = $this->queryXhtml();
if ( ! $output ) {
return false;
}
// Save XHTML as file in exports folder
$filename = $this->timestampedFileName( '.html' );
file_put_contents( $filename, $output );
$this->outputPath = $filename;
return true;
}
/**
* Check the sanity of $this->outputPath
*
* @return bool
*/
function validate() {
// Xmllint params
$command = PB_XMLLINT_COMMAND . ' --html --valid --noout ' . escapeshellcmd( $this->outputPath ) . ' 2>&1';
// Execute command
$output = [];
$return_var = 0;
exec( $command, $output, $return_var );
// Is this a valid XHTML?
if ( count( $output ) ) {
$this->logError( implode( "\n", $output ) );
return false;
}
return true;
}
/**
* Procedure for "format/xhtml" rewrite rule.
*/
function transform() {
// Check permissions
if ( ! current_user_can( 'manage_options' ) ) {
$timestamp = ( isset( $_REQUEST['timestamp'] ) ) ? absint( $_REQUEST['timestamp'] ) : '';
$hashkey = ( isset( $_REQUEST['hashkey'] ) ) ? $_REQUEST['hashkey'] : '';
if ( ! $this->verifyNonce( $timestamp, $hashkey ) ) {
wp_die( __( 'Invalid permission error', 'pressbooks' ) );
}
}
// Override footnote shortcode
if ( ! empty( $_GET['endnotes'] ) ) {
add_shortcode( 'footnote', [ $this, 'endnoteShortcode' ] );
} else {
add_shortcode( 'footnote', [ $this, 'footnoteShortcode' ] );
}
// ------------------------------------------------------------------------------------------------------------
// XHTML, Start!
$metadata = \Pressbooks\Book::getBookInformation();
$book_contents = $this->preProcessBookContents( \Pressbooks\Book::getBookContents() );
// Set two letter language code
if ( isset( $metadata['pb_language'] ) ) {
list( $this->lang ) = explode( '-', $metadata['pb_language'] );
}
$this->echoDocType( $book_contents, $metadata );
echo "<head>\n";
echo '<meta content="text/html; charset=UTF-8" http-equiv="content-type" />' . "\n";
echo '<meta http-equiv="Content-Language" content="' . $this->lang . '" />' . "\n";
echo '<meta name="generator" content="Pressbooks ' . PB_PLUGIN_VERSION . '" />' . "\n";
$this->echoMetaData( $book_contents, $metadata );
echo '<title>' . get_bloginfo( 'name' ) . "</title>\n";
if ( ! empty( $_GET['style'] ) ) {
$url = \Pressbooks\Container::get( 'Sass' )->urlToUserGeneratedCss() . '/' . clean_filename( $_GET['style'] ) . '.css';
echo "<link rel='stylesheet' href='$url' type='text/css' />\n";
}
if ( ! empty( $_GET['script'] ) ) {
$url = $this->getExportScriptUrl( clean_filename( $_GET['script'] ) ) . '/script.js';
if ( $url ) {
echo "<script src='$url' type='text/javascript'></script>\n";
}
}
echo "</head>\n<body lang='{$this->lang}'>\n";
// Before Title Page
$this->echoBeforeTitle( $book_contents, $metadata );
// Half-title
$this->echoHalfTitle( $book_contents, $metadata );
// Cover
$this->echoCover( $book_contents, $metadata );
// Title
$this->echoTitle( $book_contents, $metadata );
// Copyright
$this->echoCopyright( $book_contents, $metadata );
// Dedication and Epigraph (In that order!)
$this->echoDedicationAndEpigraph( $book_contents, $metadata );
// Table of contents
$this->echoToc( $book_contents, $metadata );
// Front-matter
$this->echoFrontMatter( $book_contents, $metadata );
// Promo
$this->createPromo( $book_contents, $metadata );
// Parts, Chapters
$this->echoPartsAndChapters( $book_contents, $metadata );
// Back-matter
$this->echoBackMatter( $book_contents, $metadata );
// XHTML, Stop!
echo "</body>\n</html>";
}
/**
* Add $this->url as additional log info, fallback to parent.
*
* @param $message
* @param array $more_info (unused, overridden)
*/
function logError( $message, array $more_info = [] ) {
$more_info = [
'url' => $this->url,
];
parent::logError( $message, $more_info );
}
/**
* Wrap footnotes for Prince compatibility
*
* @see http://www.princexml.com/doc/8.1/footnotes/
*
* @param $atts
* @param null $content
*
* @return string
*/
function footnoteShortcode( $atts, $content = null ) {
return '<span class="footnote">' . trim( $content ) . '</span>';
}
/**
* Convert footnotes to endnotes by moving them to the end of the_content()
*
* @see doEndnotes
*
* @param array $atts
* @param null $content
*
* @return string
*/
function endnoteShortcode( $atts, $content = null ) {
global $id;
if ( ! $content ) {
return '';
}
$this->endnotes[ $id ][] = trim( $content );
return '<sup class="endnote">' . count( $this->endnotes[ $id ] ) . '</sup>';
}
/**
* Style endnotes.
*
* @see endnoteShortcode
*
* @param $id
*
* @return string
*/
function doEndnotes( $id ) {
if ( ! isset( $this->endnotes[ $id ] ) || ! count( $this->endnotes[ $id ] ) ) {
return '';
}
$e = '<div class="endnotes">';
$e .= '<hr />';
$e .= '<h3>' . __( 'Notes', 'pressbooks' ) . '</h3>';
$e .= '<ol>';
foreach ( $this->endnotes[ $id ] as $endnote ) {
$e .= "<li><span>$endnote</span></li>";
}
$e .= '</ol></div>';
return $e;
}
/**
* Query the access protected "format/xhtml" URL, return the results.
*
* @return bool|string
*/
protected function queryXhtml() {
$args = [ 'timeout' => $this->timeout ];
if ( defined( 'WP_ENV' ) && WP_ENV === 'development' ) {
$args['sslverify'] = false;
}
$response = wp_remote_get( $this->url, $args );
// WordPress error?
if ( is_wp_error( $response ) ) {
$this->logError( $response->get_error_message() );
return false;
}
// Server error?
if ( 200 !== wp_remote_retrieve_response_code( $response ) ) {
$this->logError( wp_remote_retrieve_response_message( $response ) );
return false;
}
return wp_remote_retrieve_body( $response );
}
// ----------------------------------------------------------------------------------------------------------------
// Sanitize book
// ----------------------------------------------------------------------------------------------------------------
/**
* @param $book_contents
*
* @return mixed
*/
protected function preProcessBookContents( $book_contents ) {
// We need to change global $id for shortcodes, the_content, ...
global $id;
$old_id = $id;
// Do root level structures first.
foreach ( $book_contents as $type => $struct ) {
if ( preg_match( '/^__/', $type ) ) {
continue; // Skip __magic keys
}
foreach ( $struct as $i => $val ) {
if ( isset( $val['post_content'] ) ) {
$id = $val['ID'];
$book_contents[ $type ][ $i ]['post_content'] = $this->preProcessPostContent( $val['post_content'] );
}
if ( isset( $val['post_title'] ) ) {
$book_contents[ $type ][ $i ]['post_title'] = Sanitize\sanitize_xml_attribute( $val['post_title'] );
}
if ( isset( $val['post_name'] ) ) {
$book_contents[ $type ][ $i ]['post_name'] = $this->preProcessPostName( $val['post_name'] );
}
if ( 'part' === $type ) {
// Do chapters, which are embedded in part structure
foreach ( $book_contents[ $type ][ $i ]['chapters'] as $j => $val2 ) {
if ( isset( $val2['post_content'] ) ) {
$id = $val2['ID'];
$book_contents[ $type ][ $i ]['chapters'][ $j ]['post_content'] = $this->preProcessPostContent( $val2['post_content'] );
}
if ( isset( $val2['post_title'] ) ) {
$book_contents[ $type ][ $i ]['chapters'][ $j ]['post_title'] = Sanitize\sanitize_xml_attribute( $val2['post_title'] );
}
if ( isset( $val2['post_name'] ) ) {
$book_contents[ $type ][ $i ]['chapters'][ $j ]['post_name'] = $this->preProcessPostName( $val2['post_name'] );
}
}
}
}
}
$id = $old_id;
return $book_contents;
}
/**
* @param string $content
*
* @return string
*/
protected function preProcessPostContent( $content ) {
$content = apply_filters( 'the_content', $content );
$content = $this->fixAnnoyingCharacters( $content ); // is this used?
$content = $this->fixInternalLinks( $content );
$content = $this->switchLaTexFormat( $content );
$content = $this->tidy( $content );
return $content;
}
/**
* Replace links to QuickLaTex PNG files with links to the corresponding SVG files.
*
* @param string $content The section content.
*
* @returns string
*/
protected function switchLaTexFormat( $content ) {
$content = preg_replace( '/(quicklatex.com-[a-f0-9]{32}_l3.)(png)/i', '$1svg', $content );
return $content;
}
/**
* @param string $content
*
* @return string
*/
protected function fixInternalLinks( $content ) {
// takes care of PB subdirectory installations of PB
$content = preg_replace( '/href\="\/([a-z0-9]*)\/(front\-matter|chapter|back\-matter|part)\/([a-z0-9\-]*)([\/]?)(\#[a-z0-9\-]*)"/', 'href="$5"', $content );
$content = preg_replace( '/href\="\/([a-z0-9]*)\/(front\-matter|chapter|back\-matter|part)\/([a-z0-9\-]*)([\/]?)"/', 'href="#$3"', $content );
// takes care of PB subdomain installations of PB
$content = preg_replace( '/href\="\/(front\-matter|chapter|back\-matter|part)\/([a-z0-9\-]*)([\/]?)(\#[a-z0-9\-]*)"/', 'href="$4"', $content );
$output = preg_replace( '/href\="\/(front\-matter|chapter|back\-matter|part)\/([a-z0-9\-]*)([\/]?)"/', 'href="#$2"', $content );
return $output;
}
/**
* Tidy HTML
*
* @param string $html
*
* @return string
*/
protected function tidy( $html ) {
// Make XHTML 1.1 strict using htmlLawed
$config = [
'valid_xhtml' => 1,
'no_deprecated_attr' => 2,
'unique_ids' => 'fixme-',
'hook' => '\Pressbooks\Sanitize\html5_to_xhtml11',
'tidy' => -1,
];
return \Pressbooks\HtmLawed::filter( $html, $config );
}
// ----------------------------------------------------------------------------------------------------------------
// Echo Functions
// ----------------------------------------------------------------------------------------------------------------
/**
* @param array $book_contents
* @param array $metadata
*/
protected function echoDocType( $book_contents, $metadata ) {
$lang = isset( $metadata['pb_language'] ) ? $metadata['pb_language'] : 'en';
echo '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">' . "\n";
echo '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="' . $this->lang . '">' . "\n";
}
/**
* @param array $book_contents
* @param array $metadata
*/
protected function echoMetaData( $book_contents, $metadata ) {
foreach ( $metadata as $name => $content ) {
$name = Sanitize\sanitize_xml_id( str_replace( '_', '-', $name ) );
$content = trim( strip_tags( html_entity_decode( $content ) ) ); // Plain text
$content = preg_replace( '/\s+/', ' ', preg_replace( '/\n+/', ' ', $content ) ); // Normalize whitespaces
$content = Sanitize\sanitize_xml_attribute( $content );
printf( '<meta name="%s" content="%s" />', $name, $content );
echo "\n";
}
}
/**
* @param array $book_contents
* @param array $metadata
*/
protected function echoCover( $book_contents, $metadata ) {
// Does nothing.
// Is here for child classes to override if ever needed.
}
/**
* @param array $book_contents
* @param array $metadata
*/
protected function echoBeforeTitle( $book_contents, $metadata ) {
$front_matter_printf = '<div class="front-matter %s" id="%s">';
$front_matter_printf .= '<div class="front-matter-title-wrap"><h3 class="front-matter-number">%s</h3><h1 class="front-matter-title">%s</h1></div>';
$front_matter_printf .= '<div class="ugc front-matter-ugc">%s</div>%s';
$front_matter_printf .= '</div>';
$i = $this->frontMatterPos;
foreach ( [ 'before-title' ] as $compare ) {
foreach ( $book_contents['front-matter'] as $front_matter ) {
if ( ! $front_matter['export'] ) {
continue; // Skip
}
$front_matter_id = $front_matter['ID'];
$subclass = \Pressbooks\Taxonomy::getFrontMatterType( $front_matter_id );
if ( $compare !== $subclass ) {
continue; //Skip
}
$slug = $front_matter['post_name'];
$title = ( get_post_meta( $front_matter_id, 'pb_show_title', true ) ? $front_matter['post_title'] : '<span class="display-none">' . $front_matter['post_title'] . '</span>' ); // Preserve auto-indexing in Prince using hidden span
$content = $front_matter['post_content'];
printf(
$front_matter_printf,
$subclass,
$slug,
$i,
Sanitize\decode( $title ),
$content,
$this->doEndnotes( $front_matter_id )
);
echo "\n";
++$i;
}
}
$this->frontMatterPos = $i;
}
/**
* @param array $book_contents
* @param array $metadata
*/
protected function echoHalfTitle( $book_contents, $metadata ) {
echo '<div id="half-title-page">';
echo '<h1 class="title">' . get_bloginfo( 'name' ) . '</h1>';
echo '</div>' . "\n";
}
/**
* @param array $book_contents
* @param array $metadata
*/
protected function echoTitle( $book_contents, $metadata ) {
// Look for custom title-page
$content = '';
foreach ( $book_contents['front-matter'] as $front_matter ) {
if ( ! $front_matter['export'] ) {
continue; // Skip
}
$front_matter_id = $front_matter['ID'];
$subclass = \Pressbooks\Taxonomy::getFrontMatterType( $front_matter_id );
if ( 'title-page' !== $subclass ) {
continue; // Skip
}
$content = $front_matter['post_content'];
break;
}
// HTML
echo '<div id="title-page">';
if ( $content ) {
echo $content;
} else {
printf( '<h1 class="title">%s</h1>', get_bloginfo( 'name' ) );
printf( '<h2 class="subtitle">%s</h2>', ( isset( $metadata['pb_subtitle'] ) ) ? $metadata['pb_subtitle'] : '' );
printf( '<h3 class="author">%s</h3>', ( isset( $metadata['pb_author'] ) ) ? $metadata['pb_author'] : '' );
printf( '<h4 class="contributing-authors">%s</h4>', ( isset( $metadata['pb_contributing_authors'] ) ) ? $metadata['pb_contributing_authors'] : '' );
if ( current_theme_supports( 'pressbooks_publisher_logo' ) ) {
printf( '<div class="publisher-logo"><img src="%s" /></div>', get_theme_support( 'pressbooks_publisher_logo' )[0]['logo_uri'] ); // TODO: Support custom publisher logo.
}
printf( '<h4 class="publisher">%s</h4>', ( isset( $metadata['pb_publisher'] ) ) ? $metadata['pb_publisher'] : '' );
printf( '<h5 class="publisher-city">%s</h5>', ( isset( $metadata['pb_publisher_city'] ) ) ? $metadata['pb_publisher_city'] : '' );
}
echo "</div>\n";
}
/**
* @param array $book_contents
* @param array $metadata
*/
protected function echoCopyright( $book_contents, $metadata ) {
$options = get_option( 'pressbooks_theme_options_global' );
foreach ( [ 'copyright_license' ] as $required_global_option ) {
if ( ! isset( $options[ $required_global_option ] ) ) {
$options[ $required_global_option ] = 0;
}
}
echo '<div id="copyright-page"><div class="ugc">';
if ( ! empty( $metadata['pb_custom_copyright'] ) ) {
echo $this->tidy( $metadata['pb_custom_copyright'] );
}
if ( 1 === absint( $options['copyright_license'] ) ) {
echo $this->doCopyrightLicense( $metadata );
}
// default, so something is displayed
if ( empty( $metadata['pb_custom_copyright'] ) && 0 === absint( $options['copyright_license'] ) ) {
echo '<p>';
echo get_bloginfo( 'name' ) . ' ' . __( 'Copyright', 'pressbooks' ) . ' © ';
echo ( ! empty( $metadata['pb_copyright_year'] ) ) ? $metadata['pb_copyright_year'] : date( 'Y' );
if ( ! empty( $metadata['pb_copyright_holder'] ) ) {
echo ' ' . __( 'by', 'pressbooks' ) . ' ' . $metadata['pb_copyright_holder'] . '. ';
}
echo '</p>';
}
echo "</div></div>\n";
}
/**
* @param array $book_contents
* @param array $metadata
*/
protected function echoDedicationAndEpigraph( $book_contents, $metadata ) {
$front_matter_printf = '<div class="front-matter %s" id="%s">';
$front_matter_printf .= '<div class="front-matter-title-wrap"><h3 class="front-matter-number">%s</h3><h1 class="front-matter-title">%s</h1></div>';
$front_matter_printf .= '<div class="ugc front-matter-ugc">%s</div>%s';
$front_matter_printf .= '</div>';
$i = $this->frontMatterPos;
foreach ( [ 'dedication', 'epigraph' ] as $compare ) {
foreach ( $book_contents['front-matter'] as $front_matter ) {
if ( ! $front_matter['export'] ) {
continue; // Skip
}
$front_matter_id = $front_matter['ID'];
$subclass = \Pressbooks\Taxonomy::getFrontMatterType( $front_matter_id );
if ( $compare !== $subclass ) {
continue; // Skip
}
$slug = $front_matter['post_name'];
$title = ( get_post_meta( $front_matter_id, 'pb_show_title', true ) ? $front_matter['post_title'] : '<span class="display-none">' . $front_matter['post_title'] . '</span>' ); // Preserve auto-indexing in Prince using hidden span
$content = $front_matter['post_content'];
printf(
$front_matter_printf,
$subclass,
$slug,
$i,
Sanitize\decode( $title ),
$content,
$this->doEndnotes( $front_matter_id )
);
echo "\n";
++$i;
}
}
$this->frontMatterPos = $i;
}
/**
* @param array $book_contents
* @param array $metadata
*/
protected function echoToc( $book_contents, $metadata ) {
$options = get_option( 'pressbooks_theme_options_global' );
foreach ( [ 'copyright_license' ] as $required_global_option ) {
if ( ! isset( $options[ $required_global_option ] ) ) {
$options[ $required_global_option ] = 0;
}
}
echo '<div id="toc"><h1>' . __( 'Contents', 'pressbooks' ) . '</h1><ul>';
foreach ( $book_contents as $type => $struct ) {
if ( preg_match( '/^__/', $type ) ) {
continue; // Skip __magic keys
}
if ( 'part' === $type ) {
foreach ( $struct as $part ) {
$slug = $part['post_name'];
$title = Sanitize\strip_br( $part['post_title'] );
$part_content = trim( $part['post_content'] );
if ( get_post_meta( $part['ID'], 'pb_part_invisible', true ) !== 'on' ) { // visible
if ( count( $book_contents['part'] ) === 1 ) { // only part
if ( $part_content ) { // has content
printf( '<li class="part"><a href="#%s">%s</a></li>', $slug, Sanitize\decode( $title ) ); // show in TOC
} else { // no content
printf( '<li class="part display-none"><a href="#%s">%s</a></li>', $slug, Sanitize\decode( $title ) ); // hide from TOC
}
} elseif ( count( $book_contents['part'] ) > 1 ) { // multiple parts
if ( $this->atLeastOneExport( $part['chapters'] ) ) { // has chapter
printf( '<li class="part"><a href="#%s">%s</a></li>', $slug, Sanitize\decode( $title ) ); // show in TOC
} else { // no chapter
if ( $part_content ) { // has content
printf( '<li class="part"><a href="#%s">%s</a></li>', $slug, Sanitize\decode( $title ) ); // show in TOC
} else { // no content
printf( '<li class="part display-none"><a href="#%s">%s</a></li>', $slug, Sanitize\decode( $title ) ); // hide from TOC
}
}
}
} elseif ( get_post_meta( $part['ID'], 'pb_part_invisible', true ) === 'on' ) { // invisible
printf( '<li class="part display-none"><a href="#%s">%s</a></li>', $slug, Sanitize\decode( $title ) ); // hide from TOC
}
foreach ( $part['chapters'] as $j => $chapter ) {
if ( ! $chapter['export'] ) {
continue;
}
$subclass = \Pressbooks\Taxonomy::getChapterType( $chapter['ID'] );
$slug = $chapter['post_name'];
$title = Sanitize\strip_br( $chapter['post_title'] );
$subtitle = trim( get_post_meta( $chapter['ID'], 'pb_subtitle', true ) );
$author = trim( get_post_meta( $chapter['ID'], 'pb_section_author', true ) );
$license = ( $options['copyright_license'] ) ? get_post_meta( $chapter['ID'], 'pb_section_license', true ) : '';
printf( '<li class="chapter %s"><a href="#%s"><span class="toc-chapter-title">%s</span>', $subclass, $slug, Sanitize\decode( $title ) );
if ( $subtitle ) {
echo ' <span class="chapter-subtitle">' . Sanitize\decode( $subtitle ) . '</span>';
}
if ( $author ) {
echo ' <span class="chapter-author">' . Sanitize\decode( $author ) . '</span>';
}
if ( $license ) {
echo ' <span class="chapter-license">' . $license . '</span> ';
}
echo '</a>';
if ( \Pressbooks\Modules\Export\Export::isParsingSubsections() === true ) {
$sections = \Pressbooks\Book::getSubsections( $chapter['ID'] );
if ( $sections ) {
echo '<ul class="sections">';
foreach ( $sections as $id => $title ) {
echo '<li class="section"><a href="#' . $id . '"><span class="toc-subsection-title">' . Sanitize\decode( $title ) . '</span></a></li>';
}
echo '</ul>';
}
}
echo '</li>';
}
}
} else {
foreach ( $struct as $val ) {
if ( ! $val['export'] ) {
continue;
}
$typetype = '';
$subtitle = '';
$author = '';
$license = '';
$slug = $val['post_name'];
$title = Sanitize\strip_br( $val['post_title'] );
if ( 'front-matter' === $type ) {
$subclass = \Pressbooks\Taxonomy::getFrontMatterType( $val['ID'] );
if ( 'dedication' === $subclass || 'epigraph' === $subclass || 'title-page' === $subclass || 'before-title' === $subclass ) {
continue; // Skip
} else {
$typetype = $type . ' ' . $subclass;
$subtitle = trim( get_post_meta( $val['ID'], 'pb_subtitle', true ) );
$author = trim( get_post_meta( $val['ID'], 'pb_section_author', true ) );
$license = ( $options['copyright_license'] ) ? get_post_meta( $val['ID'], 'pb_section_license', true ) : '';
}
} elseif ( 'back-matter' === $type ) {
$typetype = $type . ' ' . \Pressbooks\Taxonomy::getBackMatterType( $val['ID'] );
$subtitle = trim( get_post_meta( $val['ID'], 'pb_subtitle', true ) );
$author = trim( get_post_meta( $val['ID'], 'pb_section_author', true ) );
$license = ( $options['copyright_license'] ) ? get_post_meta( $val['ID'], 'pb_section_license', true ) : '';
}
printf( '<li class="%s"><a href="#%s"><span class="toc-chapter-title">%s</span>', $typetype, $slug, Sanitize\decode( $title ) );
if ( $subtitle ) {
echo ' <span class="chapter-subtitle">' . Sanitize\decode( $subtitle ) . '</span>';
}
if ( $author ) {
echo ' <span class="chapter-author">' . Sanitize\decode( $author ) . '</span>';
}
if ( $license ) {
echo ' <span class="chapter-license">' . $license . '</span> ';
}
echo '</a>';
if ( \Pressbooks\Modules\Export\Export::isParsingSubsections() === true ) {
$sections = \Pressbooks\Book::getSubsections( $val['ID'] );
if ( $sections ) {
echo '<ul class="sections">';
foreach ( $sections as $id => $title ) {
echo '<li class="section"><a href="#' . $id . '"><span class="toc-subsection-title">' . $title . '</span></a></li>';
}
echo '</ul>';
}
}
echo '</li>';
}
}
}
echo "</ul></div>\n";
}
/**
* @param array $book_contents
* @param array $metadata
*/
protected function echoFrontMatter( $book_contents, $metadata ) {
$front_matter_printf = '<div class="front-matter %s" id="%s">';
$front_matter_printf .= '<div class="front-matter-title-wrap"><h3 class="front-matter-number">%s</h3><h1 class="front-matter-title">%s</h1></div>';
$front_matter_printf .= '<div class="ugc front-matter-ugc">%s</div>%s%s';
$front_matter_printf .= '</div>';
$s = 1;
$i = $this->frontMatterPos;
foreach ( $book_contents['front-matter'] as $front_matter ) {
if ( ! $front_matter['export'] ) {
continue; // Skip
}
$front_matter_id = $front_matter['ID'];
$subclass = \Pressbooks\Taxonomy::getFrontMatterType( $front_matter_id );
if ( 'dedication' === $subclass || 'epigraph' === $subclass || 'title-page' === $subclass || 'before-title' === $subclass ) {
continue; // Skip
}
if ( 'introduction' === $subclass ) {
$this->hasIntroduction = true;
}
$slug = $front_matter['post_name'];
$title = ( get_post_meta( $front_matter_id, 'pb_show_title', true ) ? $front_matter['post_title'] : '<span class="display-none">' . $front_matter['post_title'] . '</span>' ); // Preserve auto-indexing in Prince using hidden span
$content = $front_matter['post_content'];
$append_front_matter_content = apply_filters( 'pb_append_front_matter_content', '', $front_matter_id );
$short_title = trim( get_post_meta( $front_matter_id, 'pb_short_title', true ) );
$subtitle = trim( get_post_meta( $front_matter_id, 'pb_subtitle', true ) );
$author = trim( get_post_meta( $front_matter_id, 'pb_section_author', true ) );
if ( \Pressbooks\Modules\Export\Export::isParsingSubsections() === true ) {
$sections = \Pressbooks\Book::getSubsections( $front_matter_id );
if ( $sections ) {
$content = \Pressbooks\Book::tagSubsections( $content, $front_matter_id );
}
}
if ( $author ) {
$content = '<h2 class="chapter-author">' . Sanitize\decode( $author ) . '</h2>' . $content;
}
if ( $subtitle ) {
$content = '<h2 class="chapter-subtitle">' . Sanitize\decode( $subtitle ) . '</h2>' . $content;
}
if ( $short_title ) {
$content = '<h6 class="short-title">' . Sanitize\decode( $short_title ) . '</h6>' . $content;
}
printf(
$front_matter_printf,
$subclass,
$slug,
$i,
Sanitize\decode( $title ),
$content,
$append_front_matter_content,
$this->doEndnotes( $front_matter_id )
);
echo "\n";
++$i;
}
$this->frontMatterPos = $i;
}
/**
* @param array $book_contents
* @param array $metadata
*/
protected function createPromo( $book_contents, $metadata ) {
$promo_html = apply_filters( 'pressbooks_pdf_promo', '' );
if ( $promo_html ) {
echo $promo_html;
}
}
/**
* @param array $book_contents
* @param array $metadata
*/
protected function echoPartsAndChapters( $book_contents, $metadata ) {
$part_printf = '<div class="part %s" id="%s">';
$part_printf .= '<div class="part-title-wrap"><h3 class="part-number">%s</h3><h1 class="part-title">%s</h1></div>%s';
$part_printf .= '</div>';
$chapter_printf = '<div class="chapter %s" id="%s">';
$chapter_printf .= '<div class="chapter-title-wrap"><h3 class="chapter-number">%s</h3><h2 class="chapter-title">%s</h2></div>';
$chapter_printf .= '<div class="ugc chapter-ugc">%s</div>%s%s';
$chapter_printf .= '</div>';
$s = $i = $j = 1;
foreach ( $book_contents['part'] as $part ) {
$invisibility = ( get_post_meta( $part['ID'], 'pb_part_invisible', true ) === 'on' ) ? 'invisible' : '';
$part_printf_changed = '';
$slug = $part['post_name'];
$title = $part['post_title'];
$part_content = trim( $part['post_content'] );
// Inject introduction class?