756 lines
26 KiB
PHP
756 lines
26 KiB
PHP
<?php
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/*
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Plugin Name: Easy Markdown
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Plugin URI: http://automattic.com/
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Description: Write in Markdown, publish in WordPress
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Version: 0.1
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Author: Matt Wiebe
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Author URI: http://automattic.com/
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*/
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/**
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* Copyright (c) Automattic. All rights reserved.
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*
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* Released under the GPL license
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* http://www.opensource.org/licenses/gpl-license.php
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*
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* This is an add-on for WordPress
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* http://wordpress.org/
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*
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* **********************************************************************
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* **********************************************************************
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*/
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class WPCom_Markdown {
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const POST_OPTION = 'wpcom_publish_posts_with_markdown';
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const COMMENT_OPTION = 'wpcom_publish_comments_with_markdown';
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const POST_TYPE_SUPPORT = 'wpcom-markdown';
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const IS_MD_META = '_wpcom_is_markdown';
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private static $parser;
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private static $instance;
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// to ensure that our munged posts over xml-rpc are removed from the cache
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public $posts_to_uncache = array();
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private $monitoring = array( 'post' => array(), 'parent' => array() );
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/**
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* Yay singletons!
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* @return object WPCom_Markdown instance
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*/
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public static function get_instance() {
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if ( ! self::$instance )
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self::$instance = new self();
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return self::$instance;
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}
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/**
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* Kicks things off on `init` action
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* @return null
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*/
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public function load() {
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$this->add_default_post_type_support();
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$this->maybe_load_actions_and_filters();
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if ( defined( 'REST_API_REQUEST' ) && REST_API_REQUEST ) {
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add_action( 'switch_blog', array( $this, 'maybe_load_actions_and_filters' ), 10, 2 );
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}
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add_action( 'admin_init', array( $this, 'register_setting' ) );
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add_action( 'admin_init', array( $this, 'maybe_unload_for_bulk_edit' ) );
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if ( current_theme_supports( 'o2' ) || class_exists( 'P2' ) ) {
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$this->add_o2_helpers();
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}
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}
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/**
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* If we're in a bulk edit session, unload so that we don't lose our markdown metadata
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* @return null
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*/
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public function maybe_unload_for_bulk_edit() {
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if ( isset( $_REQUEST['bulk_edit'] ) && $this->is_posting_enabled() ) {
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$this->unload_markdown_for_posts();
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}
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}
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/**
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* Called on init and fires on switch_blog to decide if our actions and filters
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* should be running.
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* @param int|null $new_blog_id New blog ID
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* @param int|null $old_blog_id Old blog ID
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* @return null
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*/
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public function maybe_load_actions_and_filters( $new_blog_id = null, $old_blog_id = null ) {
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// If this is a switch_to_blog call, and the blog isn't changing, we'll already be loaded
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if ( $new_blog_id && $new_blog_id === $old_blog_id ) {
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return;
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}
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if ( $this->is_posting_enabled() ) {
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$this->load_markdown_for_posts();
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} else {
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$this->unload_markdown_for_posts();
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}
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if ( $this->is_commenting_enabled() ) {
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$this->load_markdown_for_comments();
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} else {
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$this->unload_markdown_for_comments();
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}
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}
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/**
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* Set up hooks for enabling Markdown conversion on posts
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* @return null
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*/
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public function load_markdown_for_posts() {
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add_action( 'wp_insert_post', array( $this, 'wp_insert_post' ) );
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add_filter( 'wp_insert_post_data', array( $this, 'wp_insert_post_data' ), 10, 2 );
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add_filter( 'edit_post_content', array( $this, 'edit_post_content' ), 10, 2 );
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add_filter( 'edit_post_content_filtered', array( $this, 'edit_post_content_filtered' ), 10, 2 );
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add_action( 'wp_restore_post_revision', array( $this, 'wp_restore_post_revision' ), 10, 2 );
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add_filter( '_wp_post_revision_fields', array( $this, '_wp_post_revision_fields' ) );
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add_action( 'xmlrpc_call', array( $this, 'xmlrpc_actions' ) );
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add_filter( 'content_save_pre', array( $this, 'preserve_code_blocks' ), 1 );
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if ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) {
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$this->check_for_early_methods();
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}
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}
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/**
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* Removes hooks to disable Markdown conversion on posts
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* @return null
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*/
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public function unload_markdown_for_posts() {
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remove_action( 'wp_insert_post', array( $this, 'wp_insert_post' ) );
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remove_filter( 'wp_insert_post_data', array( $this, 'wp_insert_post_data' ), 10, 2 );
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remove_filter( 'edit_post_content', array( $this, 'edit_post_content' ), 10, 2 );
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remove_filter( 'edit_post_content_filtered', array( $this, 'edit_post_content_filtered' ), 10, 2 );
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remove_action( 'wp_restore_post_revision', array( $this, 'wp_restore_post_revision' ), 10, 2 );
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remove_filter( '_wp_post_revision_fields', array( $this, '_wp_post_revision_fields' ) );
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remove_action( 'xmlrpc_call', array( $this, 'xmlrpc_actions' ) );
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remove_filter( 'content_save_pre', array( $this, 'preserve_code_blocks' ), 1 );
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}
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/**
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* Set up hooks for enabling Markdown conversion on comments
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* @return null
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*/
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protected function load_markdown_for_comments() {
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// Use priority 9 so that Markdown runs before KSES, which can clean up
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// any munged HTML.
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add_filter( 'pre_comment_content', array( $this, 'pre_comment_content' ), 9 );
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}
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/**
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* Removes hooks to disable Markdown conversion
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* @return null
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*/
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protected function unload_markdown_for_comments() {
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remove_filter( 'pre_comment_content', array( $this, 'pre_comment_content' ), 9 );
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}
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/**
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* o2 does some of what we do. Let's take precedence.
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* @return null
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*/
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public function add_o2_helpers() {
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if ( $this->is_posting_enabled() ) {
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add_filter( 'content_save_pre', array( $this, 'o2_escape_lists' ), 1 );
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}
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add_filter( 'o2_preview_post', array( $this, 'o2_preview_post' ) );
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add_filter( 'o2_preview_comment', array( $this, 'o2_preview_comment' ) );
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add_filter( 'wpcom_markdown_transform_pre', array( $this, 'o2_unescape_lists' ) );
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add_filter( 'wpcom_untransformed_content', array( $this, 'o2_unescape_lists' ) );
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}
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/**
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* If Markdown is enabled for posts on this blog, filter the text for o2 previews
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* @param string $text Post text
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* @return string Post text transformed through the magic of Markdown
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*/
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public function o2_preview_post( $text ) {
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if ( $this->is_posting_enabled() ) {
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$text = $this->transform( $text, array( 'unslash' => false ) );
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}
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return $text;
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}
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/**
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* If Markdown is enabled for comments on this blog, filter the text for o2 previews
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* @param string $text Comment text
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* @return string Comment text transformed through the magic of Markdown
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*/
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public function o2_preview_comment( $text ) {
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if ( $this->is_commenting_enabled() ) {
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$text = $this->transform( $text, array( 'unslash' => false ) );
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}
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return $text;
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}
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/**
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* Escapes lists so that o2 doesn't trounce them
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* @param string $text Post/comment text
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* @return string Text escaped with HTML entity for asterisk
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*/
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public function o2_escape_lists( $text ) {
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return preg_replace( '/^\\* /um', '* ', $text );
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}
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/**
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* Unescapes the token we inserted on o2_escape_lists
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* @param string $text Post/comment text with HTML entities for asterisks
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* @return string Text with the HTML entity removed
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*/
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public function o2_unescape_lists( $text ) {
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return preg_replace( '/^[&]\#042; /um', '* ', $text );
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}
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/**
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* Preserve code blocks from being munged by KSES before they have a chance
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* @param string $text post content
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* @return string post content with code blocks escaped
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*/
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public function preserve_code_blocks( $text ) {
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return $this->get_parser()->codeblock_preserve( $text );
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}
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/**
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* Remove KSES if it's there. Store the result to manually invoke later if needed.
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* @return null
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*/
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public function maybe_remove_kses() {
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// Filters return true if they existed before you removed them
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if ( $this->is_posting_enabled() )
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$this->kses = remove_filter( 'content_filtered_save_pre', 'wp_filter_post_kses' ) && remove_filter( 'content_save_pre', 'wp_filter_post_kses' );
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}
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/**
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* Add our Writing and Discussion settings.
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* @return null
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*/
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public function register_setting() {
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add_settings_field( self::POST_OPTION, __( 'Markdown', 'jetpack' ), array( $this, 'post_field' ), 'writing' );
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register_setting( 'writing', self::POST_OPTION, array( $this, 'sanitize_setting') );
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add_settings_field( self::COMMENT_OPTION, __( 'Markdown', 'jetpack' ), array( $this, 'comment_field' ), 'discussion' );
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register_setting( 'discussion', self::COMMENT_OPTION, array( $this, 'sanitize_setting') );
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}
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/**
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* Sanitize setting. Don't really want to store "on" value, so we'll store "1" instead!
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* @param string $input Value received by settings API via $_POST
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* @return bool Cast to boolean.
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*/
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public function sanitize_setting( $input ) {
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return (bool) $input;
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}
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/**
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* Prints HTML for the Writing setting
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* @return null
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*/
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public function post_field() {
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printf(
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'<label><input name="%s" id="%s" type="checkbox"%s /> %s</label><p class="description">%s</p>',
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self::POST_OPTION,
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self::POST_OPTION,
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checked( $this->is_posting_enabled(), true, false ),
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esc_html__( 'Use Markdown for posts and pages.', 'jetpack' ),
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sprintf( '<a href="%s">%s</a>', esc_url( $this->get_support_url() ), esc_html__( 'Learn more about Markdown.', 'jetpack' ) )
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);
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}
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/**
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* Prints HTML for the Discussion setting
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* @return null
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*/
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public function comment_field() {
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printf(
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'<label><input name="%s" id="%s" type="checkbox"%s /> %s</label><p class="description">%s</p>',
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self::COMMENT_OPTION,
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self::COMMENT_OPTION,
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checked( $this->is_commenting_enabled(), true, false ),
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esc_html__( 'Use Markdown for comments.', 'jetpack' ),
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sprintf( '<a href="%s">%s</a>', esc_url( $this->get_support_url() ), esc_html__( 'Learn more about Markdown.', 'jetpack' ) )
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);
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}
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/**
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* Get the support url for Markdown
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* @uses apply_filters
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* @return string support url
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*/
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protected function get_support_url() {
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/**
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* Filter the Markdown support URL.
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*
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* @module markdown
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*
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* @since 2.8.0
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*
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* @param string $url Markdown support URL.
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*/
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return apply_filters( 'easy_markdown_support_url', 'http://en.support.wordpress.com/markdown-quick-reference/' );
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}
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/**
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* Is Mardown conversion for posts enabled?
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* @return boolean
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*/
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public function is_posting_enabled() {
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return (bool) get_option( self::POST_OPTION, '' );
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}
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/**
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* Is Markdown conversion for comments enabled?
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* @return boolean
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*/
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public function is_commenting_enabled() {
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return (bool) get_option( self::COMMENT_OPTION, '' );
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}
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/**
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* Check if a $post_id has Markdown enabled
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* @param int $post_id A post ID.
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* @return boolean
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*/
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public function is_markdown( $post_id ) {
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return get_metadata( 'post', $post_id, self::IS_MD_META, true );
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}
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/**
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* Set Markdown as enabled on a post_id. We skip over update_postmeta so we
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* can sneakily set metadata on post revisions, which we need.
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* @param int $post_id A post ID.
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* @return bool The metadata was successfully set.
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*/
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protected function set_as_markdown( $post_id ) {
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return update_metadata( 'post', $post_id, self::IS_MD_META, true );
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}
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/**
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* Get our Markdown parser object, optionally requiring all of our needed classes and
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* instantiating our parser.
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* @return object WPCom_GHF_Markdown_Parser instance.
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*/
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public function get_parser() {
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if ( ! self::$parser ) {
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jetpack_require_lib( 'markdown' );
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self::$parser = new WPCom_GHF_Markdown_Parser;
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}
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return self::$parser;
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}
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/**
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* We don't want Markdown conversion all over the place.
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* @return null
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*/
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public function add_default_post_type_support() {
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add_post_type_support( 'post', self::POST_TYPE_SUPPORT );
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add_post_type_support( 'page', self::POST_TYPE_SUPPORT );
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add_post_type_support( 'revision', self::POST_TYPE_SUPPORT );
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}
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/**
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* Figure out the post type of the post screen we're on
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* @return string Current post_type
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*/
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protected function get_post_screen_post_type() {
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global $pagenow;
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if ( 'post-new.php' === $pagenow )
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return ( isset( $_GET['post_type'] ) ) ? $_GET['post_type'] : 'post';
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if ( isset( $_GET['post'] ) ) {
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$post = get_post( (int) $_GET['post'] );
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if ( is_object( $post ) && isset( $post->post_type ) )
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return $post->post_type;
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}
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return 'post';
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}
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/**
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* Swap post_content and post_content_filtered for editing
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* @param string $content Post content
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* @param int $id post ID
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* @return string Swapped content
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*/
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public function edit_post_content( $content, $id ) {
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if ( $this->is_markdown( $id ) ) {
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$post = get_post( $id );
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if ( $post && ! empty( $post->post_content_filtered ) ) {
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$post = $this->swap_for_editing( $post );
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return $post->post_content;
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}
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}
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return $content;
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}
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/**
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* Swap post_content_filtered and post_content for editing
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* @param string $content Post content_filtered
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* @param int $id post ID
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* @return string Swapped content
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*/
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public function edit_post_content_filtered( $content, $id ) {
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// if markdown was disabled, let's turn this off
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if ( ! $this->is_posting_enabled() && $this->is_markdown( $id ) ) {
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$post = get_post( $id );
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if ( $post && ! empty( $post->post_content_filtered ) )
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$content = '';
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}
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return $content;
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}
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/**
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* Magic happens here. Markdown is converted and stored on post_content. Original Markdown is stored
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* in post_content_filtered so that we can continue editing as Markdown.
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* @param array $post_data The post data that will be inserted into the DB. Slashed.
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* @param array $postarr All the stuff that was in $_POST.
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* @return array $post_data with post_content and post_content_filtered modified
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*/
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public function wp_insert_post_data( $post_data, $postarr ) {
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// $post_data array is slashed!
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$post_id = isset( $postarr['ID'] ) ? $postarr['ID'] : false;
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// bail early if markdown is disabled or this post type is unsupported.
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if ( ! $this->is_posting_enabled() || ! post_type_supports( $post_data['post_type'], self::POST_TYPE_SUPPORT ) ) {
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// it's disabled, but maybe this *was* a markdown post before.
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if ( $this->is_markdown( $post_id ) && ! empty( $post_data['post_content_filtered'] ) ) {
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$post_data['post_content_filtered'] = '';
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}
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// we have no context to determine supported post types in the `post_content_pre` hook,
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// which already ran to sanitize code blocks. Undo that.
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$post_data['post_content'] = $this->get_parser()->codeblock_restore( $post_data['post_content'] );
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return $post_data;
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}
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// rejigger post_content and post_content_filtered
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// revisions are already in the right place, except when we're restoring, but that's taken care of elsewhere
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// also prevent quick edit feature from overriding already-saved markdown (issue https://github.com/Automattic/jetpack/issues/636)
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if ( 'revision' !== $post_data['post_type'] && ! isset( $_POST['_inline_edit'] ) ) {
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/**
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* Filter the original post content passed to Markdown.
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*
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* @module markdown
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*
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* @since 2.8.0
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*
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* @param string $post_data['post_content'] Untransformed post content.
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*/
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$post_data['post_content_filtered'] = apply_filters( 'wpcom_untransformed_content', $post_data['post_content'] );
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$post_data['post_content'] = $this->transform( $post_data['post_content'], array( 'id' => $post_id ) );
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/** This filter is already documented in core/wp-includes/default-filters.php */
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$post_data['post_content'] = apply_filters( 'content_save_pre', $post_data['post_content'] );
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} elseif ( 0 === strpos( $post_data['post_name'], $post_data['post_parent'] . '-autosave' ) ) {
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// autosaves for previews are weird
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$post_data['post_content'] = $this->transform( $post_data['post_content'], array( 'id' => $post_data['post_parent'] ) );
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/** This filter is already documented in core/wp-includes/default-filters.php */
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$post_data['post_content'] = apply_filters( 'content_save_pre', $post_data['post_content'] );
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}
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// set as markdown on the wp_insert_post hook later
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if ( $post_id )
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|
$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() ) {
|
|
$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() {
|
|
global $HTTP_RAW_POST_DATA;
|
|
if ( false === strpos( $HTTP_RAW_POST_DATA, 'metaWeblog.getPost' )
|
|
&& false === strpos( $HTTP_RAW_POST_DATA, 'wp.getPage' ) ) {
|
|
return;
|
|
}
|
|
include_once( ABSPATH . WPINC . '/class-IXR.php' );
|
|
$message = new IXR_Message( $HTTP_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' ) );
|