Weak hands cannot be planted, meager skills have no foundation. Shallow wisdom is futile, how can one hope for a good name?扰扰从役倦，屑屑身事微。少壮轻年月，迟暮惜光辉。 base = $base; add_action( 'wp_loaded', array( $this, 'maybe_process_on_frontend' ) ); } /** * If processing Spintax is enabled on the frontend through the Plugin's Settings, * adds the necessary filters to permit spintax processing. * * @since 3.2.9 */ public function maybe_process_on_frontend() { // Bail if processing spintax isn't enabled. if ( ! $this->base->get_class( 'settings' )->get_setting( $this->base->plugin->name . '-spintax', 'frontend', 0 ) ) { return; } // Register Plugin filters on Post Elements to process spintax on. add_filter( 'page_generator_pro_frontend_filter_post_content', array( $this, 'process' ) ); } /** * Parses content, which comprises of one or more paragraphs, denoted with #p# and #/p#. * * @since 2.0.1 * * @param string $text Block Spintax Text. * @return string Spun Text */ public function process( $text ) { // Assume spun text is the text for now. $spun_text = $text; // If #section# is specified, we need to reorder the paragraphs inside the section. if ( preg_match( '/\#section(.*?)\#(.*?)\#\/section\#/si', $text ) ) { $spun_text = preg_replace_callback( '/\#section(.*?)\#(.*?)\#\/section\#/si', array( $this, 'parse_section' ), $text ); } // Parse #p# and #s# not inside a #section#. $spun_text = preg_replace_callback( '/\#p\#(.*?)\#\/p\#/si', array( $this, 'parse_paragraph' ), $spun_text ); // Return. return $this->format_and_return( $text, $spun_text ); } /** * Sanity checks the output, and performs some formatting to * the block spun content * * @since 2.3.0 * * @param string $original_text Original Block Spintax. * @param string $spun_text Spun Result. */ private function format_and_return( $original_text, $spun_text ) { // If the spun text is blank, something went wrong. // This should never happen, but it's a useful fallback in case. if ( empty( $spun_text ) ) { return $original_text; } // If the spun text is the same as the original text, just return the original text. // This prevents non-spintax items from being modified. if ( $spun_text === $original_text ) { return $original_text; } // Trim. $spun_text = trim( $spun_text ); // Strip any double spaces. $spun_text = str_replace( ' ', ' ', $spun_text ); // Strip any spaces immediately after a paragraph tag. $spun_text = str_replace( '

', '

', $spun_text ); // Strip double paragraphs, which happen when we're spinning frontend content. $spun_text = str_replace( '

', '

', $spun_text ); $spun_text = str_replace( '

', '

', $spun_text ); // Strip breaklines which wrongly happen when we're spinning frontend content. $spun_text = str_replace( '


', '

', $spun_text ); $spun_text = str_replace( "

\n
", '

', $spun_text ); $spun_text = str_replace( '

', '', $spun_text ); // Return. return $spun_text; } /** * Parses an individual #section#, which comprises of one or more paragraph (#p# #/p#) blocks. * * Paragraphs are shuffled at random within each section. * * @since 2.0.1 * * @param array $matches preg_match_all matches. * [0] original section, including #section# tags. * [1] any #section# attributes (if blank, no attributes). * [2] text within #section#. * @return string Block Content */ private function parse_section( $matches ) { // If section attributes exist, such as the minimum and maximum number of paragraphs to return, // fetch the attributes now. $atts = $this->get_default_section_attributes(); if ( $matches[1] ) { $atts = array_merge( $atts, shortcode_parse_atts( trim( $matches[1] ) ) ); } $section = preg_replace_callback( '/\#p\#(.*?)\#\/p\#/si', array( $this, 'parse_paragraph' ), $matches[2] // text within #section#. ); // Split paragraphs into an array. $paragraphs = explode( '

', $section ); // Remove

tags from all paragraphs for now. foreach ( $paragraphs as $index => $paragraph ) { $paragraphs[ $index ] = trim( str_replace( array( '

', '

' ), '', $paragraph ) ); // If this value is now empty, discard it. if ( empty( $paragraphs[ $index ] ) ) { unset( $paragraphs[ $index ] ); continue; } // If this value is just HTML tags with no text, discard it. if ( empty( wp_strip_all_tags( $paragraphs[ $index ] ) ) ) { unset( $paragraphs[ $index ] ); } } // If imploding the paragraphs results in an empty string, return nothing. if ( empty( trim( implode( '', $paragraphs ) ) ) ) { return ''; } // If no min/max paragraphs are specified, maybe randomize order and return. if ( ! $atts['min'] && ! $atts['max'] ) { // Shuffle paragraphs, if required. if ( absint( $atts['random_p_order'] ) !== 0 ) { shuffle( $paragraphs ); } // Implode into a string and return. return '

' . implode( '

', $paragraphs ) . '

'; } // Determine the number of paragraphs to use. $number_of_paragraphs = wp_rand( absint( $atts['min'] ), absint( $atts['max'] ) ); // If no paragraphs are required, maybe randomize order, extract paragraph(s) and return. if ( ! $atts['required_p'] ) { // Shuffle paragraphs, if required. if ( absint( $atts['random_p_order'] ) !== 0 ) { shuffle( $paragraphs ); } // Extract the number of paragraphs from the paragraphs array. $paragraphs = array_slice( $paragraphs, 0, $number_of_paragraphs ); // Implode into a string and return. return '

' . implode( '

', $paragraphs ) . '

'; } // Extract the required paragraphs from the array of paragraphs. $selected_paragraphs = array(); foreach ( explode( ',', $atts['required_p'] ) as $required_paragraph_index ) { // Convert to zero based index. $required_paragraph_index = ( absint( $required_paragraph_index ) + -1 ); // If this paragraph doesn't exist in the array of paragraphs, continue. if ( ! isset( $paragraphs[ absint( $required_paragraph_index ) ] ) ) { continue; } // Add this paragraph to the array of required paragraphs, and remove it from the paragraphs array // as it has been selected. $selected_paragraphs[] = $paragraphs[ absint( $required_paragraph_index ) ]; unset( $paragraphs[ absint( $required_paragraph_index ) ] ); } // Reindex the remaining paragraphs. $paragraphs = array_values( $paragraphs ); // Shuffle paragraphs, if required. if ( absint( $atts['random_p_order'] ) !== 0 ) { shuffle( $paragraphs ); } // Create a new array of paragraphs, comprising of required paragraphs first, followed by remaining paragraphs. $paragraphs = array_merge( array_values( $selected_paragraphs ), array_values( $paragraphs ) ); // Extract the number of paragraphs from the paragraphs array. $paragraphs = array_slice( $paragraphs, 0, $number_of_paragraphs ); // Implode into a string and return. return '

' . implode( '

', $paragraphs ) . '

'; } /** * Parses an individual #p# paragraph, which comprises of one or more sentence (#s /#s) blocks. * * @since 2.0.1 * * @param array $matches preg_match_all matches. * @return string Block Content */ private function parse_paragraph( $matches ) { // Replace
with a new line, as some Page Builders replace newlines with
tags. $matches[0] = str_replace( '
', "\n", $matches[0] ); $matches[1] = str_replace( '
', "\n", $matches[1] ); $paragraph = '

' . preg_replace_callback( '/\#s\#(.*?)\#\/s\#/s', array( $this, 'parse_sentence' ), $matches[1] ) . '

'; // Strip newlines and trim space. $paragraph = str_replace( "\n", '', $paragraph ); $paragraph = str_replace( "\r", '', $paragraph ); $paragraph = trim( $paragraph ); // Return. return $paragraph; } /** * Parses an individual sentence block, which comprises of one or more lines of * sentences, returning a single sentence at random. * * @since 2.0.1 * * @param array $matches preg_match_all matches. * @return string Sentence Content */ private function parse_sentence( $matches ) { // Explode the sentence spins. $parts = explode( "\n", trim( $matches[1] ) ); // Remove empty sentences. foreach ( $parts as $index => $part ) { // Trim the sentence to remove any newlines, to avoid falsely finding a sentence // isn't empty when it is just a newline