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<?php
use function Soledad\Table_Of_Contents\String\br2;
class SoledadToc_Post {
private $queriedObjectID;
private $post;
private $permalink;
private $pages = array();
private $headingLevels = array();
private $excludedNodes = array();
private $collision_collector = array();
private $hasTOCItems = false;
public function __construct( WP_Post $post, $apply_content_filter = true ) {
$this->post = $post;
$this->permalink = get_permalink( $post );
$this->queriedObjectID = get_queried_object_id();
if ( $apply_content_filter ) {
$this->applyContentFilter()->process();
} else {
$this->process();
}
}
private function process() {
$this->processPages();
return $this;
}
private function processPages() {
$split = preg_split( '/<!--nextpage-->/msuU', $this->post->post_content );
$pages_content = array();
if ( is_array( $split ) ) {
$page = 1;
foreach ( $split as $content ) {
$this->extractExcludedNodes( $page, $content );
$pages_content[ $page ] = array(
'headings' => $this->extractHeadings( $content ),
'content' => $content,
);
$page ++;
}
}
$this->pages = $pages_content;
}
private function extractExcludedNodes( $page, $content ) {
if ( ! class_exists( 'TagFilter' ) ) {
require_once( get_template_directory() . '/inc/toc/tag_filter.php' );
}
$tagFilterOptions = TagFilter::GetHTMLOptions();
// Set custom TagFilter options.
$tagFilterOptions['charset'] = get_option( 'blog_charset' );
//$tagFilterOptions['output_mode'] = 'xml';
$html = TagFilter::Explode( $content, $tagFilterOptions );
$selectors = apply_filters( 'penci_toc_exclude_by_selector', array( '.penci-toc-exclude-headings' ), $content );
$nodes = $html->Find( implode( ',', $selectors ) );
foreach ( $nodes['ids'] as $id ) {
//$this->excludedNodes[ $page ][ $id ] = $html->Implode( $id, $tagFilterOptions );
array_push( $this->excludedNodes, $html->Implode( $id, $tagFilterOptions ) );
}
}
private function extractHeadings( $content ) {
$matches = array();
$content = apply_filters( 'penci_toc_extract_headings_content', wptexturize( $content ) );
// get all headings
// the html spec allows for a maximum of 6 heading depths
if ( preg_match_all( '/(<h([1-6]{1})[^>]*>)(.*)<\/h\2>/msuU', $content, $matches, PREG_SET_ORDER ) ) {
$minimum = absint( get_theme_mod( 'penci_toc_start', 3 ) );
$this->removeHeadingsFromExcludedNodes( $matches );
$this->removeHeadings( $matches );
$this->excludeHeadings( $matches );
$this->removeEmptyHeadings( $matches );
if ( count( $matches ) >= $minimum ) {
$this->alternateHeadings( $matches );
$this->headingIDs( $matches );
$this->hasTOCItems = true;
} else {
return array();
}
}
return array_values( $matches ); // Rest the array index.
}
private function removeHeadingsFromExcludedNodes( &$matches ) {
foreach ( $matches as $i => $match ) {
if ( $this->inExcludedNode( "{$match[3]}</h$match[2]>" ) ) {
unset( $matches[ $i ] );
}
}
return $matches;
}
private function inExcludedNode( $string ) {
foreach ( $this->excludedNodes as $node ) {
if ( empty( $node ) || empty( $string ) ) {
return false;
}
if ( false !== strpos( $node, $string ) ) {
return true;
}
}
return false;
}
private function removeHeadings( &$matches ) {
$levels = $this->getHeadingLevels();
if ( count( $levels ) != 6 ) {
$new_matches = array();
//$count = count( $matches );
//for ( $i = 0; $i < $count; $i++ ) {
foreach ( $matches as $i => $match ) {
if ( in_array( $matches[ $i ][2], $levels ) ) {
$new_matches[ $i ] = $matches[ $i ];
}
}
$matches = $new_matches;
}
return $matches;
}
private function getHeadingLevels() {
$levels = get_post_meta( $this->post->ID, '_penci-toc-heading-levels', true );
if ( ! is_array( $levels ) ) {
$levels = array();
}
if ( empty( $levels ) ) {
$levels = get_theme_mod( 'penci_toc_heading_levels', array( '2', '3', '4', '5', '6' ) );
}
$this->headingLevels = $levels;
return $this->headingLevels;
}
private function excludeHeadings( &$matches ) {
$exclude = get_post_meta( $this->post->ID, '_penci-toc-exclude', true );
if ( empty( $exclude ) ) {
$exclude = get_theme_mod( 'penci_toc_exclude', '' );
}
if ( $exclude ) {
$excluded_headings = explode( '|', $exclude );
$excluded_count = count( $excluded_headings );
if ( $excluded_count > 0 ) {
for ( $j = 0; $j < $excluded_count; $j ++ ) {
$excluded_headings[ $j ] = preg_quote( $excluded_headings[ $j ] );
// escape some regular expression characters
// others: http://www.php.net/manual/en/regexp.reference.meta.php
$excluded_headings[ $j ] = str_replace( array( '\*', '/', '%' ), array(
'.*',
'\/',
'\%'
), trim( $excluded_headings[ $j ] ) );
}
$new_matches = array();
//$count = count( $matches );
//for ( $i = 0; $i < $count; $i++ ) {
foreach ( $matches as $i => $match ) {
$found = false;
$against = html_entity_decode( wptexturize( strip_tags( str_replace( array(
"\r",
"\n"
), ' ', $matches[ $i ][0] ) ) ), ENT_NOQUOTES, get_option( 'blog_charset' ) );
for ( $j = 0; $j < $excluded_count; $j ++ ) {
// Since WP manipulates the post content it is required that the excluded header and
// the actual header be manipulated similarly so a match can be made.
$pattern = html_entity_decode( wptexturize( $excluded_headings[ $j ] ), ENT_NOQUOTES, get_option( 'blog_charset' ) );
if ( @preg_match( '/^' . $pattern . '$/imU', $against ) ) {
$found = true;
break;
}
}
if ( ! $found ) {
$new_matches[ $i ] = $matches[ $i ];
}
}
//if ( count( $matches ) != count( $new_matches ) ) {
$matches = $new_matches;
//}
}
}
return $matches;
}
private function removeEmptyHeadings( &$matches ) {
$new_matches = array();
//$count = count( $matches );
//for ( $i = 0; $i < $count; $i ++ ) {
foreach ( $matches as $i => $match ) {
if ( trim( strip_tags( $matches[ $i ][0] ) ) != false ) {
$new_matches[ $i ] = $matches[ $i ];
}
}
//if ( count( $matches ) != count( $new_matches ) ) {
$matches = $new_matches;
//}
return $matches;
}
private function alternateHeadings( &$matches ) {
$alt_headings = $this->getAlternateHeadings();
//$count = count( $matches );
if ( 0 < count( $alt_headings ) ) {
//for ( $i = 0; $i < $count; $i++ ) {
foreach ( $matches as $i => $match ) {
foreach ( $alt_headings as $original_heading => $alt_heading ) {
// Cleanup and texturize so alt heading can match heading in post content.
$original_heading = wptexturize( trim( $original_heading ) );
// Deal with special characters such as non-breakable space.
$original_heading = str_replace( array( "\xc2\xa0" ), array( ' ' ), $original_heading );
// Escape for regular expression.
$original_heading = preg_quote( $original_heading );
// Escape for regular expression some other characters: http://www.php.net/manual/en/regexp.reference.meta.php
$original_heading = str_replace( array( '\*', '/', '%' ), array(
'.*',
'\/',
'\%'
), $original_heading );
// Cleanup subject so alt heading can match heading in post content.
$subject = strip_tags( $matches[ $i ][0] );
// Deal with special characters such as non-breakable space.
$subject = str_replace( array( "\xc2\xa0" ), array( ' ' ), $subject );
if ( @preg_match( '/^' . $original_heading . '$/imU', $subject ) ) {
$matches[ $i ]['alternate'] = $alt_heading;
}
}
}
}
return $matches;
}
private function getAlternateHeadings() {
$alternates = array();
$value = get_post_meta( $this->post->ID, '_penci-toc-alttext', true );
if ( $value ) {
$headings = preg_split( '/\r\n|[\r\n]/', $value );
$count = count( $headings );
if ( $headings ) {
for ( $k = 0; $k < $count; $k ++ ) {
$heading = explode( '|', $headings[ $k ] );
/**
* @link https://wordpress.org/support/topic/undefined-offset-1-home-blog-public-wp-content-plugins-easy-table-of-contents/
*/
if ( ! is_array( $heading ) || ! array_key_exists( 0, $heading ) || ! array_key_exists( 1, $heading ) ) {
continue;
}
if ( 0 < strlen( $heading[0] ) && 0 < strlen( $heading[1] ) ) {
$alternates[ $heading[0] ] = $heading[1];
}
}
}
}
return $alternates;
}
private function headingIDs( &$matches ) {
//$count = count( $matches );
//for ( $i = 0; $i < $count; $i++ ) {
foreach ( $matches as $i => $match ) {
$matches[ $i ]['id'] = $this->generateHeadingIDFromTitle( $matches[ $i ][0] );
}
return $matches;
}
private function generateHeadingIDFromTitle( $heading ) {
$return = false;
if ( $heading ) {
// WP entity encodes the post content.
$return = html_entity_decode( $heading, ENT_QUOTES, get_option( 'blog_charset' ) );
$return = br2( $return, ' ' );
$return = trim( strip_tags( $return ) );
// Convert accented characters to ASCII.
$return = remove_accents( $return );
// replace newlines with spaces (eg when headings are split over multiple lines)
$return = str_replace( array( "\r", "\n", "\n\r", "\r\n" ), ' ', $return );
// Remove `&` and ` ` NOTE: in order to strip "hidden" ` `,
// title needs to be converted to HTML entities.
// @link https://stackoverflow.com/a/21801444/5351316
$return = htmlentities2( $return );
$return = str_replace( array( '&', ' ' ), ' ', $return );
$return = html_entity_decode( $return, ENT_QUOTES, get_option( 'blog_charset' ) );
// remove non alphanumeric chars
//$return = preg_replace( '/[^a-zA-Z0-9 \-_]*/', '', $return );
$return = preg_replace( '/[\x00-\x1F\x7F]*/u', '', $return );
// Reserved Characters.
// * ' ( ) ; : @ & = + $ , / ? # [ ]
$return = str_replace( array(
'*',
'\'',
'(',
')',
';',
'@',
'&',
'=',
'+',
'$',
',',
'/',
'?',
'#',
'[',
']'
), '', $return );
// Unsafe Characters.
// % { } | \ ^ ~ [ ] `
$return = str_replace( array( '%', '{', '}', '|', '\\', '^', '~', '[', ']', '`' ), '', $return );
// Special Characters.
// $ - _ . + ! * ' ( ) ,
$return = str_replace( array( '$', '.', '+', '!', '*', '\'', '(', ')', ',' ), '', $return );
// Dashes
// Special Characters.
// - (minus) - (dash) β (en dash) β (em dash)
$return = str_replace( array( '-', '-', 'β', 'β' ), '-', $return );
// Curley quotes.
// β (curly single open quote) β (curly single close quote) β (curly double open quote) β (curly double close quote)
$return = str_replace( array( 'β', 'β', 'β', 'β' ), '', $return );
// AMP/Caching plugins seems to break URL with the following characters, so lets replace them.
$return = str_replace( array( ':' ), '_', $return );
// Convert space characters to an `_` (underscore).
$return = preg_replace( '/\s+/', '_', $return );
// Replace multiple `-` (hyphen) with a single `-` (hyphen).
$return = preg_replace( '/-+/', '-', $return );
// Replace multiple `_` (underscore) with a single `_` (underscore).
$return = preg_replace( '/_+/', '_', $return );
// Remove trailing `-` (hyphen) and `_` (underscore).
$return = rtrim( $return, '-_' );
/*
* Encode URI based on ECMA-262.
*
* Only required to support the jQuery smoothScroll library.
*
* @link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURI#Description
* @link https://stackoverflow.com/a/19858404/5351316
*/
$return = preg_replace_callback( "{[^0-9a-z_.!~*'();,/?:@&=+$#-]}i", function ( $m ) {
return sprintf( '%%%02X', ord( $m[0] ) );
}, $return );
// lowercase everything?
if ( get_theme_mod( 'penci_toc_lowercase' ) ) {
$return = strtolower( $return );
}
// if blank, then prepend with the fragment prefix
// blank anchors normally appear on sites that don't use the latin charset
if ( ! $return ) {
$return = ( get_theme_mod( 'penci_toc_fragment_prefix' ) ) ? get_theme_mod( 'penci_toc_fragment_prefix' ) : '_';
}
// hyphenate?
$return = str_replace( '_', '-', $return );
$return = preg_replace( '/-+/', '-', $return );
}
if ( array_key_exists( $return, $this->collision_collector ) ) {
$this->collision_collector[ $return ] ++;
$return .= '-' . $this->collision_collector[ $return ];
} else {
$this->collision_collector[ $return ] = 1;
}
return apply_filters( 'penci_toc_url_anchor_target', $return, $heading );
}
private function applyContentFilter() {
add_filter( 'strip_shortcodes_tagnames', array( __CLASS__, 'stripShortcodes' ), 10, 2 );
remove_filter( 'the_content', array( 'PenciTOC', 'the_content' ), 100 );
$this->post->post_content = apply_filters( 'the_content', strip_shortcodes( $this->post->post_content ) );
add_filter( 'the_content', array( 'PenciTOC', 'the_content' ), 100 );
remove_filter( 'strip_shortcodes_tagnames', array( __CLASS__, 'stripShortcodes' ) );
return $this;
}
public static function get( $id ) {
$post = get_post( $id );
if ( ! $post instanceof WP_Post ) {
return null;
}
return new static( $post );
}
public static function stripShortcodes( $tags_to_remove, $content ) {
$tags_to_remove = apply_filters( 'penci_toc_strip_shortcodes_tagnames', array(
'penci_toc',
apply_filters( 'penci_toc_shortcode', 'toc' ),
), $content );
return $tags_to_remove;
}
public function getPages() {
return $this->pages;
}
public function getHeadings( $page = null ) {
$headings = array();
if ( is_null( $page ) ) {
$page = $this->getCurrentPage();
}
if ( isset( $this->pages[ $page ] ) ) {
//$headings = wp_list_pluck( $this->pages[ $page ]['headings'], 0 );
$matches = $this->pages[ $page ]['headings'];
//$count = count( $matches );
//for ( $i = 0; $i < $count; $i++ ) {
foreach ( $matches as $i => $match ) {
//$anchor = $matches[ $i ]['id'];
$headings[] = str_replace( array(
$matches[ $i ][1], // start of heading
'</h' . $matches[ $i ][2] . '>' // end of heading
), array(
'>',
'</h' . $matches[ $i ][2] . '>'
), $matches[ $i ][0] );
}
}
return $headings;
}
protected function getCurrentPage() {
global $wp_query;
// Check to see if the global `$wp_query` var is an instance of WP_Query and that the get() method is callable.
// If it is then when can simply use the get_query_var() function.
if ( $wp_query instanceof WP_Query && is_callable( array( $wp_query, 'get' ) ) ) {
$page = get_query_var( 'page', 1 );
return 1 > $page ? 1 : $page;
// If a theme or plugin broke the global `$wp_query` var, check to see if the $var was parsed and saved in $GLOBALS['wp_query']->query_vars.
} elseif ( isset( $GLOBALS['wp_query']->query_vars['page'] ) ) {
return $GLOBALS['wp_query']->query_vars['page'];
// We should not reach this, but if we do, lets check the original parsed query vars in $GLOBALS['wp_the_query']->query_vars.
} elseif ( isset( $GLOBALS['wp_the_query']->query_vars['page'] ) ) {
return $GLOBALS['wp_the_query']->query_vars['page'];
// Ok, if all else fails, check the $_REQUEST super global.
} elseif ( isset( $_REQUEST['page'] ) ) {
return $_REQUEST['page'];
}
return 1;
}
public function getHeadingsWithAnchors( $page = null ) {
$headings = array();
if ( is_null( $page ) ) {
$page = $this->getCurrentPage();
}
if ( isset( $this->pages[ $page ] ) ) {
$matches = $this->pages[ $page ]['headings'];
$prefix = get_theme_mod( 'penci_toc_prefix', 'penci' );
$prefix = $prefix ? $prefix . '-' : '';
foreach ( $matches as $i => $match ) {
$anchor = $matches[ $i ]['id'];
$headings[] = str_replace( array(
$matches[ $i ][1], // start of heading
'</h' . $matches[ $i ][2] . '>' // end of heading
), array(
'><span class="penci-toc-section" id="' . $prefix . $anchor . '">',
'</span></h' . $matches[ $i ][2] . '>'
), $matches[ $i ][0] );
}
}
return $headings;
}
public function toc() {
echo $this->getTOC();
}
public function getTOC() {
$class = array( 'penci-toc-container' );
$max_lv = get_theme_mod( 'penci_toc_levels', 3 );
$html = '';
if ( $this->hasTOCItems() ) {
// wrapping css classes
switch ( get_theme_mod( 'penci_toc_wrapping' ) ) {
case 'left':
$class[] = 'penci-toc-wrap-left';
break;
case 'right':
$class[] = 'penci-toc-wrap-right';
break;
default:
$class[] = 'penci-toc-default';
}
if ( get_theme_mod( 'penci_toc_show_hierarchy', true ) ) {
$class[] = 'counter-hierarchy';
} else {
$class[] .= 'counter-flat';
}
switch ( get_theme_mod( 'penci_toc_counter', 'decimal' ) ) {
case 'numeric':
$class[] .= 'counter-numeric';
break;
case 'roman':
$class[] = 'counter-roman';
break;
case 'decimal':
$class[] = 'counter-decimal';
break;
}
$class[] = get_theme_mod( 'penci_toc_visibility' ) ? 'dis-toggle' : 'enable-toggle';
$class[] = get_theme_mod( 'penci_toc_style' );
$class[] = 'penci-toc-wrapper';
$class[] = 'max-lv-' . $max_lv;
$sticky_class = 'sticky-' . get_theme_mod( 'penci_toc_sticky', 'left' );
$class = array_filter( $class );
$class = array_map( 'trim', $class );
$class = array_map( 'sanitize_html_class', $class );
$html .= '<div class="penci-toc-container-wrapper ' . $sticky_class . '"><div id="penci-toc-container" class="' . implode( ' ', $class ) . '">' . PHP_EOL;
$toc_title = penci_get_setting( 'penci_toc_heading_text' );
if ( strpos( $toc_title, '%PAGE_TITLE%' ) !== false ) {
$toc_title = str_replace( '%PAGE_TITLE%', get_the_title(), $toc_title );
}
if ( strpos( $toc_title, '%PAGE_NAME%' ) !== false ) {
$toc_title = str_replace( '%PAGE_NAME%', get_the_title(), $toc_title );
}
$html .= '<div class="penci-toc-head penci-toc-title-container">' . PHP_EOL;
if ( penci_get_setting( 'penci_toc_heading_text' ) ) {
$html .= '<p class="penci-toc-title">' . esc_html__( htmlentities( $toc_title, ENT_COMPAT, 'UTF-8' ), 'soledad' ) . '</p>' . PHP_EOL;
}
$html .= '<span class="penci-toc-title-toggle">';
if ( ! get_theme_mod( 'penci_toc_visibility' ) ) {
$html .= '<a class="penci-toc-toggle penci-toc-title-toggle" style="display: none;"></a>';
}
$html .= '</span>';
$html .= '</div>' . PHP_EOL;
ob_start();
do_action( 'penci_toc_before' );
$html .= ob_get_clean();
$html .= '<nav class="penci-toc">' . $this->getTOCList() . '</nav>';
ob_start();
do_action( 'penci_toc_after' );
$html .= ob_get_clean();
$html .= '</div></div>' . PHP_EOL;
}
return $html;
}
public function hasTOCItems() {
return $this->hasTOCItems;
}
public function getTOCList() {
$html = '';
if ( $this->hasTOCItems ) {
foreach ( $this->pages as $page => $attribute ) {
$html .= $this->createTOC( $page, $attribute['headings'] );
}
$html = '<ul class="penci-toc-list">' . $html . '</ul>';
}
return $html;
}
private function createTOC( $page, $matches ) {
// Whether or not the TOC should be built flat or hierarchical.
$hierarchical = get_theme_mod( 'penci_toc_show_hierarchy', true );
$html = '';
if ( $hierarchical ) {
$current_depth = 100; // headings can't be larger than h6 but 100 as a default to be sure
$numbered_items = array();
$numbered_items_min = null;
foreach ( $matches as $i => $match ) {
if ( $current_depth > $matches[ $i ][2] ) {
$current_depth = (int) $matches[ $i ][2];
}
}
$numbered_items[ $current_depth ] = 0;
$numbered_items_min = $current_depth;
foreach ( $matches as $i => $match ) {
$level = $matches[ $i ][2];
$count = $i + 1;
if ( $current_depth == (int) $matches[ $i ][2] ) {
$html .= '<li class="penci-tocli">';
}
// start lists
if ( $current_depth != (int) $matches[ $i ][2] ) {
for ( $current_depth; $current_depth < (int) $matches[ $i ][2]; $current_depth ++ ) {
$numbered_items[ $current_depth + 1 ] = 0;
$html .= '<ul class="penci-tocul"><li class="penci-tocli">';
}
}
$title = isset( $matches[ $i ]['alternate'] ) ? $matches[ $i ]['alternate'] : $matches[ $i ][0];
$title = br2( $title, ' ' );
$title = strip_tags( apply_filters( 'penci_toc_title', $title ), apply_filters( 'penci_toc_title_allowable_tags', '' ) );
$html .= $this->createTOCItemAnchor( $page, $matches[ $i ]['id'], $title, $count );
// end lists
if ( $i != count( $matches ) - 1 ) {
if ( $current_depth > (int) $matches[ $i + 1 ][2] ) {
for ( $current_depth; $current_depth > (int) $matches[ $i + 1 ][2]; $current_depth -- ) {
$html .= '</li></ul>';
$numbered_items[ $current_depth ] = 0;
}
}
if ( $current_depth == (int) @$matches[ $i + 1 ][2] ) {
$html .= '</li>';
}
} else {
// this is the last item, make sure we close off all tags
for ( $current_depth; $current_depth >= $numbered_items_min; $current_depth -- ) {
$html .= '</li>';
if ( $current_depth != $numbered_items_min ) {
$html .= '</ul>';
}
}
}
}
} else {
//for ( $i = 0; $i < count( $matches ); $i++ ) {
foreach ( $matches as $i => $match ) {
$count = $i + 1;
$title = isset( $matches[ $i ]['alternate'] ) ? $matches[ $i ]['alternate'] : $matches[ $i ][0];
$title = strip_tags( apply_filters( 'penci_toc_title', $title ), apply_filters( 'penci_toc_title_allowable_tags', '' ) );
$html .= '<li class="penci-tocli">';
$html .= $this->createTOCItemAnchor( $page, $matches[ $i ]['id'], $title, $count );
$html .= '</li>';
}
}
return $html;
}
private function createTOCItemAnchor( $page, $id, $title, $count ) {
$rel = get_theme_mod( 'penci_toc_nofollow_link' ) ? ' rel="nofollow" ' : ' ';
return sprintf( '<a' . $rel . 'class="penci-toc-link penci-toc-heading-' . $count . '" href="%1$s" title="%2$s">%3$s</a>', esc_attr( $this->createTOCItemURL( $id, $page ) ), esc_attr( strip_tags( $title ) ), $title );
}
private function createTOCItemURL( $id, $page ) {
$prefix = get_theme_mod( 'penci_toc_prefix', 'penci' );
$prefix = $prefix ? $prefix . '-' : '';
$current_post = $this->post->ID === $this->queriedObjectID;
$current_page = $this->getCurrentPage();
if ( $page === $current_page && $current_post ) {
return '#' . $prefix . $id;
} elseif ( 1 === $page ) {
return trailingslashit( $this->permalink ) . '#' . $prefix . $id;
}
return trailingslashit( $this->permalink ) . $page . '/#' . $prefix . $id;
}
protected function isMultipage() {
return 1 < $this->getNumberOfPages();
}
protected function getNumberOfPages() {
return count( $this->pages );
}
}