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Diffstat (limited to 'plugins/jetpack/modules/markdown/easy-markdown.php')
| -rw-r--r-- | plugins/jetpack/modules/markdown/easy-markdown.php | 812 |
1 files changed, 0 insertions, 812 deletions
diff --git a/plugins/jetpack/modules/markdown/easy-markdown.php b/plugins/jetpack/modules/markdown/easy-markdown.php deleted file mode 100644 index 06a2cab9..00000000 --- a/plugins/jetpack/modules/markdown/easy-markdown.php +++ /dev/null @@ -1,812 +0,0 @@ -<?php - -/* -Plugin Name: Easy Markdown -Plugin URI: http://automattic.com/ -Description: Write in Markdown, publish in WordPress -Version: 0.1 -Author: Matt Wiebe -Author URI: http://automattic.com/ -*/ - -/** - * Copyright (c) Automattic. All rights reserved. - * - * Released under the GPL license - * http://www.opensource.org/licenses/gpl-license.php - * - * This is an add-on for WordPress - * https://wordpress.org/ - * - * ********************************************************************** - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * ********************************************************************** - */ - -class WPCom_Markdown { - - - const POST_OPTION = 'wpcom_publish_posts_with_markdown'; - const COMMENT_OPTION = 'wpcom_publish_comments_with_markdown'; - const POST_TYPE_SUPPORT = 'wpcom-markdown'; - const IS_MD_META = '_wpcom_is_markdown'; - - private static $parser; - private static $instance; - - // to ensure that our munged posts over xml-rpc are removed from the cache - public $posts_to_uncache = array(); - private $monitoring = array( 'post' => array(), 'parent' => array() ); - - - /** - * Yay singletons! - * @return object WPCom_Markdown instance - */ - public static function get_instance() { - if ( ! self::$instance ) - self::$instance = new self(); - return self::$instance; - } - - /** - * Kicks things off on `init` action - * @return null - */ - public function load() { - $this->add_default_post_type_support(); - $this->maybe_load_actions_and_filters(); - if ( defined( 'REST_API_REQUEST' ) && REST_API_REQUEST ) { - add_action( 'switch_blog', array( $this, 'maybe_load_actions_and_filters' ), 10, 2 ); - } - add_action( 'admin_init', array( $this, 'register_setting' ) ); - add_action( 'admin_init', array( $this, 'maybe_unload_for_bulk_edit' ) ); - if ( current_theme_supports( 'o2' ) || class_exists( 'P2' ) ) { - $this->add_o2_helpers(); - } - } - - /** - * If we're in a bulk edit session, unload so that we don't lose our markdown metadata - * @return null - */ - public function maybe_unload_for_bulk_edit() { - if ( isset( $_REQUEST['bulk_edit'] ) && $this->is_posting_enabled() ) { - $this->unload_markdown_for_posts(); - } - } - - /** - * Called on init and fires on switch_blog to decide if our actions and filters - * should be running. - * @param int|null $new_blog_id New blog ID - * @param int|null $old_blog_id Old blog ID - * @return null - */ - public function maybe_load_actions_and_filters( $new_blog_id = null, $old_blog_id = null ) { - // If this is a switch_to_blog call, and the blog isn't changing, we'll already be loaded - if ( $new_blog_id && $new_blog_id === $old_blog_id ) { - return; - } - - if ( $this->is_posting_enabled() ) { - $this->load_markdown_for_posts(); - } else { - $this->unload_markdown_for_posts(); - } - - if ( $this->is_commenting_enabled() ) { - $this->load_markdown_for_comments(); - } else { - $this->unload_markdown_for_comments(); - } - } - - /** - * Set up hooks for enabling Markdown conversion on posts - * @return null - */ - public function load_markdown_for_posts() { - add_filter( 'wp_kses_allowed_html', array( $this, 'wp_kses_allowed_html' ), 10, 2 ); - add_action( 'after_wp_tiny_mce', array( $this, 'after_wp_tiny_mce' ) ); - add_action( 'wp_insert_post', array( $this, 'wp_insert_post' ) ); - add_filter( 'wp_insert_post_data', array( $this, 'wp_insert_post_data' ), 10, 2 ); - add_filter( 'edit_post_content', array( $this, 'edit_post_content' ), 10, 2 ); - add_filter( 'edit_post_content_filtered', array( $this, 'edit_post_content_filtered' ), 10, 2 ); - add_action( 'wp_restore_post_revision', array( $this, 'wp_restore_post_revision' ), 10, 2 ); - add_filter( '_wp_post_revision_fields', array( $this, '_wp_post_revision_fields' ) ); - add_action( 'xmlrpc_call', array( $this, 'xmlrpc_actions' ) ); - add_filter( 'content_save_pre', array( $this, 'preserve_code_blocks' ), 1 ); - if ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) { - $this->check_for_early_methods(); - } - } - - /** - * Removes hooks to disable Markdown conversion on posts - * @return null - */ - public function unload_markdown_for_posts() { - remove_filter( 'wp_kses_allowed_html', array( $this, 'wp_kses_allowed_html' ) ); - remove_action( 'after_wp_tiny_mce', array( $this, 'after_wp_tiny_mce' ) ); - remove_action( 'wp_insert_post', array( $this, 'wp_insert_post' ) ); - remove_filter( 'wp_insert_post_data', array( $this, 'wp_insert_post_data' ), 10, 2 ); - remove_filter( 'edit_post_content', array( $this, 'edit_post_content' ), 10, 2 ); - remove_filter( 'edit_post_content_filtered', array( $this, 'edit_post_content_filtered' ), 10, 2 ); - remove_action( 'wp_restore_post_revision', array( $this, 'wp_restore_post_revision' ), 10, 2 ); - remove_filter( '_wp_post_revision_fields', array( $this, '_wp_post_revision_fields' ) ); - remove_action( 'xmlrpc_call', array( $this, 'xmlrpc_actions' ) ); - remove_filter( 'content_save_pre', array( $this, 'preserve_code_blocks' ), 1 ); - } - - /** - * Set up hooks for enabling Markdown conversion on comments - * @return null - */ - protected function load_markdown_for_comments() { - // Use priority 9 so that Markdown runs before KSES, which can clean up - // any munged HTML. - add_filter( 'pre_comment_content', array( $this, 'pre_comment_content' ), 9 ); - } - - /** - * Removes hooks to disable Markdown conversion - * @return null - */ - protected function unload_markdown_for_comments() { - remove_filter( 'pre_comment_content', array( $this, 'pre_comment_content' ), 9 ); - } - - /** - * o2 does some of what we do. Let's take precedence. - * @return null - */ - public function add_o2_helpers() { - if ( $this->is_posting_enabled() ) { - add_filter( 'content_save_pre', array( $this, 'o2_escape_lists' ), 1 ); - } - - add_filter( 'o2_preview_post', array( $this, 'o2_preview_post' ) ); - add_filter( 'o2_preview_comment', array( $this, 'o2_preview_comment' ) ); - - add_filter( 'wpcom_markdown_transform_pre', array( $this, 'o2_unescape_lists' ) ); - add_filter( 'wpcom_untransformed_content', array( $this, 'o2_unescape_lists' ) ); - } - - /** - * If Markdown is enabled for posts on this blog, filter the text for o2 previews - * @param string $text Post text - * @return string Post text transformed through the magic of Markdown - */ - public function o2_preview_post( $text ) { - if ( $this->is_posting_enabled() ) { - $text = $this->transform( $text, array( 'unslash' => false ) ); - } - return $text; - } - - /** - * If Markdown is enabled for comments on this blog, filter the text for o2 previews - * @param string $text Comment text - * @return string Comment text transformed through the magic of Markdown - */ - public function o2_preview_comment( $text ) { - if ( $this->is_commenting_enabled() ) { - $text = $this->transform( $text, array( 'unslash' => false ) ); - } - return $text; - } - - /** - * Escapes lists so that o2 doesn't trounce them - * @param string $text Post/comment text - * @return string Text escaped with HTML entity for asterisk - */ - public function o2_escape_lists( $text ) { - return preg_replace( '/^\\* /um', '* ', $text ); - } - - /** - * Unescapes the token we inserted on o2_escape_lists - * @param string $text Post/comment text with HTML entities for asterisks - * @return string Text with the HTML entity removed - */ - public function o2_unescape_lists( $text ) { - return preg_replace( '/^[&]\#042; /um', '* ', $text ); - } - - /** - * Preserve code blocks from being munged by KSES before they have a chance - * @param string $text post content - * @return string post content with code blocks escaped - */ - public function preserve_code_blocks( $text ) { - return $this->get_parser()->codeblock_preserve( $text ); - } - - /** - * Remove KSES if it's there. Store the result to manually invoke later if needed. - * @return null - */ - public function maybe_remove_kses() { - // Filters return true if they existed before you removed them - if ( $this->is_posting_enabled() ) - $this->kses = remove_filter( 'content_filtered_save_pre', 'wp_filter_post_kses' ) && remove_filter( 'content_save_pre', 'wp_filter_post_kses' ); - } - - /** - * Add our Writing and Discussion settings. - * @return null - */ - public function register_setting() { - add_settings_field( self::POST_OPTION, __( 'Markdown', 'jetpack' ), array( $this, 'post_field' ), 'writing' ); - register_setting( 'writing', self::POST_OPTION, array( $this, 'sanitize_setting') ); - add_settings_field( self::COMMENT_OPTION, __( 'Markdown', 'jetpack' ), array( $this, 'comment_field' ), 'discussion' ); - register_setting( 'discussion', self::COMMENT_OPTION, array( $this, 'sanitize_setting') ); - } - - /** - * Sanitize setting. Don't really want to store "on" value, so we'll store "1" instead! - * @param string $input Value received by settings API via $_POST - * @return bool Cast to boolean. - */ - public function sanitize_setting( $input ) { - return (bool) $input; - } - - /** - * Prints HTML for the Writing setting - * @return null - */ - public function post_field() { - printf( - '<label><input name="%s" id="%s" type="checkbox"%s /> %s</label><p class="description">%s</p>', - self::POST_OPTION, - self::POST_OPTION, - checked( $this->is_posting_enabled(), true, false ), - esc_html__( 'Use Markdown for posts and pages.', 'jetpack' ), - sprintf( '<a href="%s">%s</a>', esc_url( $this->get_support_url() ), esc_html__( 'Learn more about Markdown.', 'jetpack' ) ) - ); - } - - /** - * Prints HTML for the Discussion setting - * @return null - */ - public function comment_field() { - printf( - '<label><input name="%s" id="%s" type="checkbox"%s /> %s</label><p class="description">%s</p>', - self::COMMENT_OPTION, - self::COMMENT_OPTION, - checked( $this->is_commenting_enabled(), true, false ), - esc_html__( 'Use Markdown for comments.', 'jetpack' ), - sprintf( '<a href="%s">%s</a>', esc_url( $this->get_support_url() ), esc_html__( 'Learn more about Markdown.', 'jetpack' ) ) - ); - } - - /** - * Get the support url for Markdown - * @uses apply_filters - * @return string support url - */ - protected function get_support_url() { - /** - * Filter the Markdown support URL. - * - * @module markdown - * - * @since 2.8.0 - * - * @param string $url Markdown support URL. - */ - return apply_filters( 'easy_markdown_support_url', 'http://en.support.wordpress.com/markdown-quick-reference/' ); - } - - /** - * Is Mardown conversion for posts enabled? - * @return boolean - */ - public function is_posting_enabled() { - return (bool) Jetpack_Options::get_option_and_ensure_autoload( self::POST_OPTION, '' ); - } - - /** - * Is Markdown conversion for comments enabled? - * @return boolean - */ - public function is_commenting_enabled() { - return (bool) Jetpack_Options::get_option_and_ensure_autoload( self::COMMENT_OPTION, '' ); - } - - /** - * Check if a $post_id has Markdown enabled - * @param int $post_id A post ID. - * @return boolean - */ - public function is_markdown( $post_id ) { - return get_metadata( 'post', $post_id, self::IS_MD_META, true ); - } - - /** - * Set Markdown as enabled on a post_id. We skip over update_postmeta so we - * can sneakily set metadata on post revisions, which we need. - * @param int $post_id A post ID. - * @return bool The metadata was successfully set. - */ - protected function set_as_markdown( $post_id ) { - return update_metadata( 'post', $post_id, self::IS_MD_META, true ); - } - - /** - * Get our Markdown parser object, optionally requiring all of our needed classes and - * instantiating our parser. - * @return object WPCom_GHF_Markdown_Parser instance. - */ - public function get_parser() { - - if ( ! self::$parser ) { - jetpack_require_lib( 'markdown' ); - self::$parser = new WPCom_GHF_Markdown_Parser; - } - - return self::$parser; - } - - /** - * We don't want Markdown conversion all over the place. - * @return null - */ - public function add_default_post_type_support() { - add_post_type_support( 'post', self::POST_TYPE_SUPPORT ); - add_post_type_support( 'page', self::POST_TYPE_SUPPORT ); - add_post_type_support( 'revision', self::POST_TYPE_SUPPORT ); - } - - /** - * Figure out the post type of the post screen we're on - * @return string Current post_type - */ - protected function get_post_screen_post_type() { - global $pagenow; - if ( 'post-new.php' === $pagenow ) - return ( isset( $_GET['post_type'] ) ) ? $_GET['post_type'] : 'post'; - if ( isset( $_GET['post'] ) ) { - $post = get_post( (int) $_GET['post'] ); - if ( is_object( $post ) && isset( $post->post_type ) ) - return $post->post_type; - } - return 'post'; - } - - /** - * Swap post_content and post_content_filtered for editing - * @param string $content Post content - * @param int $id post ID - * @return string Swapped content - */ - public function edit_post_content( $content, $id ) { - if ( $this->is_markdown( $id ) ) { - $post = get_post( $id ); - if ( $post && ! empty( $post->post_content_filtered ) ) { - $post = $this->swap_for_editing( $post ); - return $post->post_content; - } - } - return $content; - } - - /** - * Swap post_content_filtered and post_content for editing - * @param string $content Post content_filtered - * @param int $id post ID - * @return string Swapped content - */ - public function edit_post_content_filtered( $content, $id ) { - // if markdown was disabled, let's turn this off - if ( ! $this->is_posting_enabled() && $this->is_markdown( $id ) ) { - $post = get_post( $id ); - if ( $post && ! empty( $post->post_content_filtered ) ) - $content = ''; - } - return $content; - } - - /** - * Some tags are allowed to have a 'markdown' attribute, allowing them to contain Markdown. - * We need to tell KSES about those tags. - * @param array $tags List of tags that KSES allows. - * @param string $context The context that KSES is allowing these tags. - * @return array The tags that KSES allows, with our extra 'markdown' parameter where necessary. - */ - public function wp_kses_allowed_html( $tags, $context ) { - if ( 'post' !== $context ) { - return $tags; - } - - $re = '/' . $this->get_parser()->contain_span_tags_re . '/'; - foreach ( $tags as $tag => $attributes ) { - if ( preg_match( $re, $tag ) ) { - $attributes['markdown'] = true; - $tags[ $tag ] = $attributes; - } - } - - return $tags; - } - - /** - * TinyMCE needs to know not to strip the 'markdown' attribute. Unfortunately, it doesn't - * really offer a nice API for whitelisting attributes, so we have to manually add it - * to the schema instead. - */ - public function after_wp_tiny_mce() { -?> -<script type="text/javascript"> -jQuery( function() { - ( 'undefined' !== typeof tinymce ) && tinymce.on( 'AddEditor', function( event ) { - event.editor.on( 'BeforeSetContent', function( event ) { - var editor = event.target; - Object.keys( editor.schema.elements ).forEach( function( key, index ) { - editor.schema.elements[ key ].attributes['markdown'] = {}; - editor.schema.elements[ key ].attributesOrder.push( 'markdown' ); - } ); - } ); - }, true ); -} ); -</script> -<?php - } - - /** - * Magic happens here. Markdown is converted and stored on post_content. Original Markdown is stored - * in post_content_filtered so that we can continue editing as Markdown. - * @param array $post_data The post data that will be inserted into the DB. Slashed. - * @param array $postarr All the stuff that was in $_POST. - * @return array $post_data with post_content and post_content_filtered modified - */ - public function wp_insert_post_data( $post_data, $postarr ) { - // $post_data array is slashed! - $post_id = isset( $postarr['ID'] ) ? $postarr['ID'] : false; - // bail early if markdown is disabled or this post type is unsupported. - if ( ! $this->is_posting_enabled() || ! post_type_supports( $post_data['post_type'], self::POST_TYPE_SUPPORT ) ) { - // it's disabled, but maybe this *was* a markdown post before. - if ( $this->is_markdown( $post_id ) && ! empty( $post_data['post_content_filtered'] ) ) { - $post_data['post_content_filtered'] = ''; - } - // we have no context to determine supported post types in the `post_content_pre` hook, - // which already ran to sanitize code blocks. Undo that. - $post_data['post_content'] = $this->get_parser()->codeblock_restore( $post_data['post_content'] ); - return $post_data; - } - // rejigger post_content and post_content_filtered - // revisions are already in the right place, except when we're restoring, but that's taken care of elsewhere - // also prevent quick edit feature from overriding already-saved markdown (issue https://github.com/Automattic/jetpack/issues/636) - if ( 'revision' !== $post_data['post_type'] && ! isset( $_POST['_inline_edit'] ) ) { - /** - * Filter the original post content passed to Markdown. - * - * @module markdown - * - * @since 2.8.0 - * - * @param string $post_data['post_content'] Untransformed post content. - */ - $post_data['post_content_filtered'] = apply_filters( 'wpcom_untransformed_content', $post_data['post_content'] ); - $post_data['post_content'] = $this->transform( $post_data['post_content'], array( 'id' => $post_id ) ); - /** This filter is already documented in core/wp-includes/default-filters.php */ - $post_data['post_content'] = apply_filters( 'content_save_pre', $post_data['post_content'] ); - } elseif ( 0 === strpos( $post_data['post_name'], $post_data['post_parent'] . '-autosave' ) ) { - // autosaves for previews are weird - /** This filter is already documented in modules/markdown/easy-markdown.php */ - $post_data['post_content_filtered'] = apply_filters( 'wpcom_untransformed_content', $post_data['post_content'] ); - $post_data['post_content'] = $this->transform( $post_data['post_content'], array( 'id' => $post_data['post_parent'] ) ); - /** This filter is already documented in core/wp-includes/default-filters.php */ - $post_data['post_content'] = apply_filters( 'content_save_pre', $post_data['post_content'] ); - } - - // set as markdown on the wp_insert_post hook later - if ( $post_id ) - $this->monitoring['post'][ $post_id ] = true; - else - $this->monitoring['content'] = wp_unslash( $post_data['post_content'] ); - if ( 'revision' === $postarr['post_type'] && $this->is_markdown( $postarr['post_parent'] ) ) - $this->monitoring['parent'][ $postarr['post_parent'] ] = true; - - return $post_data; - } - - /** - * Calls on wp_insert_post action, after wp_insert_post_data. This way we can - * still set postmeta on our revisions after it's all been deleted. - * @param int $post_id The post ID that has just been added/updated - * @return null - */ - public function wp_insert_post( $post_id ) { - $post_parent = get_post_field( 'post_parent', $post_id ); - // this didn't have an ID yet. Compare the content that was just saved. - if ( isset( $this->monitoring['content'] ) && $this->monitoring['content'] === get_post_field( 'post_content', $post_id ) ) { - unset( $this->monitoring['content'] ); - $this->set_as_markdown( $post_id ); - } - if ( isset( $this->monitoring['post'][$post_id] ) ) { - unset( $this->monitoring['post'][$post_id] ); - $this->set_as_markdown( $post_id ); - } elseif ( isset( $this->monitoring['parent'][$post_parent] ) ) { - unset( $this->monitoring['parent'][$post_parent] ); - $this->set_as_markdown( $post_id ); - } - } - - /** - * Run a comment through Markdown. Easy peasy. - * @param string $content - * @return string - */ - public function pre_comment_content( $content ) { - return $this->transform( $content, array( - 'id' => $this->comment_hash( $content ), - ) ); - } - - protected function comment_hash( $content ) { - return 'c-' . substr( md5( $content ), 0, 8 ); - } - - /** - * Markdown conversion. Some DRYness for repetitive tasks. - * @param string $text Content to be run through Markdown - * @param array $args Arguments, with keys: - * id: provide a string to prefix footnotes with a unique identifier - * unslash: when true, expects and returns slashed data - * decode_code_blocks: when true, assume that text in fenced code blocks is already - * HTML encoded and should be decoded before being passed to Markdown, which does - * its own encoding. - * @return string Markdown-processed content - */ - public function transform( $text, $args = array() ) { - // If this contains Gutenberg content, let's keep it intact. - if ( has_blocks( $text ) ) { - return $text; - } - - $args = wp_parse_args( $args, array( - 'id' => false, - 'unslash' => true, - 'decode_code_blocks' => ! $this->get_parser()->use_code_shortcode - ) ); - // probably need to unslash - if ( $args['unslash'] ) - $text = wp_unslash( $text ); - - /** - * Filter the content to be run through Markdown, before it's transformed by Markdown. - * - * @module markdown - * - * @since 2.8.0 - * - * @param string $text Content to be run through Markdown - * @param array $args Array of Markdown options. - */ - $text = apply_filters( 'wpcom_markdown_transform_pre', $text, $args ); - // ensure our paragraphs are separated - $text = str_replace( array( '</p><p>', "</p>\n<p>" ), "</p>\n\n<p>", $text ); - // visual editor likes to add <p>s. Buh-bye. - $text = $this->get_parser()->unp( $text ); - // sometimes we get an encoded > at start of line, breaking blockquotes - $text = preg_replace( '/^>/m', '>', $text ); - // prefixes are because we need to namespace footnotes by post_id - $this->get_parser()->fn_id_prefix = $args['id'] ? $args['id'] . '-' : ''; - // If we're not using the code shortcode, prevent over-encoding. - if ( $args['decode_code_blocks'] ) { - $text = $this->get_parser()->codeblock_restore( $text ); - } - // Transform it! - $text = $this->get_parser()->transform( $text ); - // Fix footnotes - kses doesn't like the : IDs it supplies - $text = preg_replace( '/((id|href)="#?fn(ref)?):/', "$1-", $text ); - // Markdown inserts extra spaces to make itself work. Buh-bye. - $text = rtrim( $text ); - /** - * Filter the content to be run through Markdown, after it was transformed by Markdown. - * - * @module markdown - * - * @since 2.8.0 - * - * @param string $text Content to be run through Markdown - * @param array $args Array of Markdown options. - */ - $text = apply_filters( 'wpcom_markdown_transform_post', $text, $args ); - - // probably need to re-slash - if ( $args['unslash'] ) - $text = wp_slash( $text ); - - return $text; - } - - /** - * Shows Markdown in the Revisions screen, and ensures that post_content_filtered - * is maintained on revisions - * @param array $fields Post fields pertinent to revisions - * @return array Modified array to include post_content_filtered - */ - public function _wp_post_revision_fields( $fields ) { - $fields['post_content_filtered'] = __( 'Markdown content', 'jetpack' ); - return $fields; - } - - /** - * Do some song and dance to keep all post_content and post_content_filtered content - * in the expected place when a post revision is restored. - * @param int $post_id The post ID have a restore done to it - * @param int $revision_id The revision ID being restored - * @return null - */ - public function wp_restore_post_revision( $post_id, $revision_id ) { - if ( $this->is_markdown( $revision_id ) ) { - $revision = get_post( $revision_id, ARRAY_A ); - $post = get_post( $post_id, ARRAY_A ); - $post['post_content'] = $revision['post_content_filtered']; // Yes, we put it in post_content, because our wp_insert_post_data() expects that - // set this flag so we can restore the post_content_filtered on the last revision later - $this->monitoring['restore'] = true; - // let's not make a revision of our fixing update - add_filter( 'wp_revisions_to_keep', '__return_false', 99 ); - wp_update_post( $post ); - $this->fix_latest_revision_on_restore( $post_id ); - remove_filter( 'wp_revisions_to_keep', '__return_false', 99 ); - } - } - - /** - * We need to ensure the last revision has Markdown, not HTML in its post_content_filtered - * column after a restore. - * @param int $post_id The post ID that was just restored. - * @return null - */ - protected function fix_latest_revision_on_restore( $post_id ) { - global $wpdb; - $post = get_post( $post_id ); - $last_revision = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE post_type = 'revision' AND post_parent = %d ORDER BY ID DESC", $post->ID ) ); - $last_revision->post_content_filtered = $post->post_content_filtered; - wp_insert_post( (array) $last_revision ); - } - - /** - * Kicks off magic for an XML-RPC session. We want to keep editing Markdown - * and publishing HTML. - * @param string $xmlrpc_method The current XML-RPC method - * @return null - */ - public function xmlrpc_actions( $xmlrpc_method ) { - switch ( $xmlrpc_method ) { - case 'metaWeblog.getRecentPosts': - case 'wp.getPosts': - case 'wp.getPages': - add_action( 'parse_query', array( $this, 'make_filterable' ), 10, 1 ); - break; - case 'wp.getPost': - $this->prime_post_cache(); - break; - } - } - - /** - * metaWeblog.getPost and wp.getPage fire xmlrpc_call action *after* get_post() is called. - * So, we have to detect those methods and prime the post cache early. - * @return null - */ - protected function check_for_early_methods() { - $raw_post_data = file_get_contents( "php://input" ); - if ( false === strpos( $raw_post_data, 'metaWeblog.getPost' ) - && false === strpos( $raw_post_data, 'wp.getPage' ) ) { - return; - } - include_once( ABSPATH . WPINC . '/class-IXR.php' ); - $message = new IXR_Message( $raw_post_data ); - $message->parse(); - $post_id_position = 'metaWeblog.getPost' === $message->methodName ? 0 : 1; - $this->prime_post_cache( $message->params[ $post_id_position ] ); - } - - /** - * Prime the post cache with swapped post_content. This is a sneaky way of getting around - * the fact that there are no good hooks to call on the *.getPost xmlrpc methods. - * - * @return null - */ - private function prime_post_cache( $post_id = false ) { - global $wp_xmlrpc_server; - if ( ! $post_id ) { - $post_id = $wp_xmlrpc_server->message->params[3]; - } - - // prime the post cache - if ( $this->is_markdown( $post_id ) ) { - $post = get_post( $post_id ); - if ( ! empty( $post->post_content_filtered ) ) { - wp_cache_delete( $post->ID, 'posts' ); - $post = $this->swap_for_editing( $post ); - wp_cache_add( $post->ID, $post, 'posts' ); - $this->posts_to_uncache[] = $post_id; - } - } - // uncache munged posts if using a persistent object cache - if ( wp_using_ext_object_cache() ) { - add_action( 'shutdown', array( $this, 'uncache_munged_posts' ) ); - } - } - - /** - * Swaps `post_content_filtered` back to `post_content` for editing purposes. - * @param object $post WP_Post object - * @return object WP_Post object with swapped `post_content_filtered` and `post_content` - */ - protected function swap_for_editing( $post ) { - $markdown = $post->post_content_filtered; - // unencode encoded code blocks - $markdown = $this->get_parser()->codeblock_restore( $markdown ); - // restore beginning of line blockquotes - $markdown = preg_replace( '/^> /m', '> ', $markdown ); - $post->post_content_filtered = $post->post_content; - $post->post_content = $markdown; - return $post; - } - - - /** - * We munge the post cache to serve proper markdown content to XML-RPC clients. - * Uncache these after the XML-RPC session ends. - * @return null - */ - public function uncache_munged_posts() { - // $this context gets lost in testing sometimes. Weird. - foreach( WPCom_Markdown::get_instance()->posts_to_uncache as $post_id ) { - wp_cache_delete( $post_id, 'posts' ); - } - } - - /** - * Since *.(get)?[Rr]ecentPosts calls get_posts with suppress filters on, we need to - * turn them back on so that we can swap things for editing. - * @param object $wp_query WP_Query object - * @return null - */ - public function make_filterable( $wp_query ) { - $wp_query->set( 'suppress_filters', false ); - add_action( 'the_posts', array( $this, 'the_posts' ), 10, 2 ); - } - - /** - * Swaps post_content and post_content_filtered for editing. - * @param array $posts Posts returned by the just-completed query - * @param object $wp_query Current WP_Query object - * @return array Modified $posts - */ - public function the_posts( $posts, $wp_query ) { - foreach ( $posts as $key => $post ) { - if ( $this->is_markdown( $post->ID ) && ! empty( $posts[ $key ]->post_content_filtered ) ) { - $markdown = $posts[ $key ]->post_content_filtered; - $posts[ $key ]->post_content_filtered = $posts[ $key ]->post_content; - $posts[ $key ]->post_content = $markdown; - } - } - return $posts; - } - - /** - * Singleton silence is golden - */ - private function __construct() {} -} - -add_action( 'init', array( WPCom_Markdown::get_instance(), 'load' ) ); |