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https://gh.wpcy.net/https://github.com/discourse/wp-discourse.git
synced 2026-05-23 03:20:46 +08:00
250 lines
7.2 KiB
PHP
Vendored
250 lines
7.2 KiB
PHP
Vendored
<?php
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/**
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* Tempate utility functions.
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*
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* @package WPDiscourse
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*/
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namespace WPDiscourse\Shared;
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/**
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* Trait TemplateFunctions
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*/
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trait TemplateFunctions {
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/**
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* Returns the user's Discourse homepage.
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*
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* @param string $url The base URL of the Discourse forum.
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* @param object $post The Post object.
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*
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* @return string
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*/
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protected function homepage( $url, $post ) {
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return $url . '/users/' . strtolower( $post->username );
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}
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/**
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* Substitutes the value for `$size` into the template.
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*
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* @param string $template The avatar template.
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* @param int $size The size of the avatar.
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* @param string $base_url The base_url of the Discourse forum.
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*
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* @return mixed
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*/
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protected function avatar( $template, $size, $base_url ) {
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if ( ! preg_match( '/^http/', $template ) ) {
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return $base_url . str_replace( '{size}', $size, $template );
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} else {
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return str_replace( '{size}', $size, $template );
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}
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}
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/**
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* Replaces relative image src with absolute.
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*
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* This function may not be required anymore.
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* See: https://meta.discourse.org/t/can-emoji-be-rendered-with-absolute-urls/47250
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*
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* @param string $url The base url of the forum.
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* @param string $content The content to be checked.
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*
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* @return mixed
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*/
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protected function convert_relative_img_src_to_absolute( $url, $content ) {
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if ( preg_match( "/<img\s*src\s*=\s*[\'\"]?(https?:)?\/\//i", $content ) ) {
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return $content;
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}
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$search = '#<img src="((?!\s*[\'"]?(?:https?:)?\/\/)\s*([\'"]))?#';
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$replace = "<img src=\"{$url}$1";
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return preg_replace( $search, $replace, $content );
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}
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/**
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* Converts relative URLs retured from Discourse to absolute URLs with DOMDocument.
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*
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* Checks if libxml is loaded. If not, calls convert_relative_img_src_to_absolute.
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*
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* @param string $url The Discourse URL.
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* @param string $content The content to be parsed.
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*
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* @return mixed|string
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*/
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protected function convert_relative_urls_to_absolute( $url, $content ) {
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if ( ! extension_loaded( 'libxml' ) ) {
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return $this->convert_relative_img_src_to_absolute( $url, $content );
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}
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// Allows parsing misformed html. Save the previous value of libxml_use_internal_errors so that it can be restored.
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$use_internal_errors = libxml_use_internal_errors( true );
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$doc = new \DOMDocument( '1.0', 'utf-8' );
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$doc->loadHTML( mb_convert_encoding( $content, 'HTML-ENTITIES', 'UTF-8' ) );
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// Mentions and hashtags.
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$links = $doc->getElementsByTagName( 'a' );
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foreach ( $links as $link ) {
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$href = $link->getAttribute( 'href' );
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$url_parts = wp_parse_url( $href );
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if ( empty( $url_parts['host'] ) ) {
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$link->setAttribute( 'href', $url . $href );
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}
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}
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// Images, emojis etc.
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$images = $doc->getElementsByTagName( 'img' );
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foreach ( $images as $image ) {
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$src = $image->getAttribute( 'src' );
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$url_parts = wp_parse_url( $src );
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if ( empty( $url_parts['host'] ) ) {
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$image->setAttribute( 'src', $url . $src );
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}
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}
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// Clear the libxml error buffer.
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libxml_clear_errors();
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// Restore the previous value of libxml_use_internal_errors.
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libxml_use_internal_errors( $use_internal_errors );
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$parsed = $doc->saveHTML( $doc->documentElement );
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// Remove DOCTYPE, html, and body tags that have been added to the DOMDocument.
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$parsed = preg_replace( '~<(?:!DOCTYPE|/?(?:html|body))[^>]*>\s*~i', '', $parsed );
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return $parsed;
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}
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/**
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* Replaces polls in posts with a link to the post.
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*
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* @param string $cooked The post's cooked content.
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* @param string $url The post's Discourse URL.
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*
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* @return string
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*/
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protected function add_poll_links( $cooked, $url ) {
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if ( ! extension_loaded( 'libxml' ) ) {
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return $cooked;
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}
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$use_internal_errors = libxml_use_internal_errors( true );
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$doc = new \DOMDocument( '1.0', 'utf-8' );
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$doc->loadHTML( mb_convert_encoding( $cooked, 'HTML-ENTITIES', 'UTF-8' ) );
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$finder = new \DOMXPath( $doc );
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// See: http://www.a-basketful-of-papayas.net/2010/04/css-selectors-and-xpath-expressions.html.
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$polls = $finder->query( "//div[contains(concat(' ', normalize-space(@class), ' '), ' poll ')]" );
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if ( $polls->length ) {
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foreach ( $polls as $poll ) {
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$link = $doc->createElement( 'a' );
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$link->setAttribute( 'class', 'wpdc-poll-link' );
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$link->setAttribute( 'href', $url );
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$link_text = sprintf(
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// translators: Poll replacement text. Placeholder: discourse_url.
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__( 'This post includes a poll. Visit it at %1$s', 'wp-discourse' ), esc_url( $this->options['url'] )
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);
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$link_text = $doc->createTextNode( $link_text );
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$link->appendChild( $link_text );
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$poll->parentNode->replaceChild( $link, $poll );
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}
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$parsed = $doc->saveHTML( $doc->documentElement );
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$parsed = preg_replace( '~<(?:!DOCTYPE|/?(?:html|body))[^>]*>\s*~i', '', $parsed );
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libxml_clear_errors();
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libxml_use_internal_errors( $use_internal_errors );
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return $parsed;
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}
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libxml_clear_errors();
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libxml_use_internal_errors( $use_internal_errors );
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return $cooked;
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}
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/**
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* Format the Discourse created_at date based on the WordPress site's timezone.
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*
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* @param string $string The datetime string returned from Discourse.
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* @param string $format The datetime format.
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*
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* @return string
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*/
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protected function format_date( $string, $format ) {
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$tz = get_option( 'timezone_string' );
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$gmt_offset = get_option( 'gmt_offset' );
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$localtime = '';
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if ( $tz ) {
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$datetime = date_create( $string, new \DateTimeZone( 'UTC' ) );
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$datetime->setTimezone( new \DateTimeZone( $tz ) );
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$localtime = $datetime->format( $format );
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} elseif ( $gmt_offset ) {
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$timestamp = strtotime( $string ) + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS );
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$localtime = gmdate( $format, $timestamp );
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}
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return $localtime;
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}
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/**
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* Converts time into relative time.
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*
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* @param string $ts The time to be formatted.
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*
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* @return string
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*/
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public function relative_time( $ts ) {
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if ( ! ctype_digit( $ts ) ) {
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$ts = strtotime( $ts );
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}
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$diff = intval( time() - $ts );
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if ( 0 === $diff ) {
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return __( 'now', 'wp-discourse' );
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} elseif ( $diff > 0 ) {
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$day_diff = intval( floor( $diff / 86400 ) );
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if ( 0 === $day_diff ) {
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switch ( $day_diff ) {
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case ( $diff < 60 ):
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return __( 'just now', 'wp-discourse' );
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case ( $diff < 120 ):
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return '1 minute ago';
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case ( $diff < 3600 ):
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return floor( $diff / 60 ) . ' ' . __( 'minutes ago', 'wp-discourse' );
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case ( $diff < 7200 ):
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return '1 ' . __( 'hour ago', 'wp-discourse' );
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default:
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return floor( $diff / 3600 ) . ' ' . __( 'hours ago', 'wp-discourse' );
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}
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} else {
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switch ( $day_diff ) {
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case ( 1 === $day_diff ):
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return __( 'yesterday', 'wp-discourse' );
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case ( $day_diff < 7 ):
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return $day_diff . ' ' . __( 'days ago', 'wp-discourse' );
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case ( $day_diff < 31 ):
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return ceil( $day_diff / 7 ) . ' ' . __( 'weeks ago', 'wp-discourse' );
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case ( $day_diff < 60 ):
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return __( 'last month', 'wp-discourse' );
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default:
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// Todo: use the time format option here?
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return date( 'F d', $ts );
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}
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}
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} else {
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// Todo: could this ever be called? If so, something has gone wrong.
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return __( 'now', 'wp-discourse' );
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}
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}
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}
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