File: /www/wwwroot/aiwellbore.com/wp-content/plugins/wp-githuber-md/src/Controllers/Markdown.php
<?php
/**
* Class Markdown
*
* @author Terry Lin
* @link https://terryl.in/
*
* @package Githuber
* @since 1.0.0
* @version 1.11.0
*
* A lot of code snippets are from Jetpack Markdown module, we don't reinvent the wheel, however, we modify it for our needs.
* @link https://github.com/Automattic/jetpack/blob/master/modules/markdown/easy-markdown.php
*/
namespace Githuber\Controller;
use Githuber\Controller as Controller;
use Githuber\Module as Module;
use Githuber\Model as Model;
class Markdown extends ControllerAbstract {
/**
* We use a JavaScript library that is called `EditorMd`, and this is its version number.
*
* @link https://github.com/pandao/editor.md
*
* @var string
*/
public $editormd_varsion = '1.5.0.14';
/**
* The Post Type support from Markdown controller.
*
* @var string
*/
public $post_type;
/**
* Constants.
*/
const MD_POST_TYPE = 'githuber_markdown';
const MD_POST_META = '_is_githuber_markdown';
const MD_POST_META_ENABLED = '_is_githuber_markdown_enabled';
const MD_POST_META_PRISM = '_githuber_prismjs';
const MD_POST_META_HIGHLIGHT = '_githuber_highlightjs';
const MD_POST_META_SEQUENCE = '_is_githuber_sequence';
const MD_POST_META_FLOW = '_is_githuber_flow_chart';
const MD_POST_META_KATEX = '_is_githuber_katex';
const MD_POST_META_MATHJAX = '_is_githuber_mathjax';
const MD_POST_META_MERMAID = '_is_githuber_mermaid';
const JETPACK_MD_POST_META = '_wpcom_is_markdown';
/**
* Parser's instance.
*/
private static $parser_instance;
/**
* Markdown Model instance.
*/
private static $model_instance;
/**
* Flags
*
* @var array
*/
private $monitoring = array( 'post' => array(), 'parent' => array() );
/**
* To ensure that our munged posts over xml-rpc are removed from the cache.
*
* @var array
*/
public $posts_to_uncache = array();
/**
* Module supprt.
*
* @var boolean
*/
public $is_support_prism = false;
public $is_support_highlight = false;
public $is_support_task_list = false;
public $is_support_katex = false;
public $is_support_flowchart = false;
public $is_support_sequence = false;
public $is_support_mermaid = false;
public $is_support_toc = false;
public $is_support_mathjax = false;
public $markdown_this_post = true;
/**
* Constructer.
*/
public function __construct() {
parent::__construct();
if ( ! self::$model_instance ) {
self::$model_instance = new Model\Markdown();
}
if ( 'yes' === githuber_get_option( 'support_prism', 'githuber_modules' ) ) {
$this->is_support_prism = true;
}
if ( 'yes' === githuber_get_option( 'support_highlight', 'githuber_modules' ) ) {
$this->is_support_highlight = true;
}
if ( 'yes' === githuber_get_option( 'support_task_list', 'githuber_extensions' ) ) {
$this->is_support_task_list = true;
}
if ( 'yes' === githuber_get_option( 'support_katex', 'githuber_modules' ) ) {
$this->is_support_katex = true;
}
if ( 'yes' === githuber_get_option( 'support_flowchart', 'githuber_modules' ) ) {
$this->is_support_flowchart = true;
}
if ( 'yes' === githuber_get_option( 'support_sequence_diagram', 'githuber_modules' ) ) {
$this->is_support_sequence = true;
}
if ( 'yes' === githuber_get_option( 'support_mermaid', 'githuber_modules' ) ) {
$this->is_support_mermaid = true;
}
if ( 'yes' === githuber_get_option( 'support_mathjax', 'githuber_modules' ) ) {
$this->is_support_mathjax = true;
}
// Load TOC widget. //
if ( 'yes' == githuber_get_option( 'support_toc', 'githuber_modules' ) ) {
if ( 'yes' == githuber_get_option( 'display_toc_in_post', 'githuber_modules' ) ) {
$this->is_support_toc = true;
}
}
}
/**
* Initialize.
*/
public function init() {
// Force-disable Jetpack's Markdown module if it is active.
add_filter( 'option_jetpack_active_modules', array( $this, 'admin_githuber_disable_jetpack_markdown' ) );
$enabled_post_types = githuber_get_option( 'enable_markdown_for_post_types', 'githuber_markdown' );
if ( empty( $enabled_post_types ) ) {
$enabled_post_types = array(
'post',
'page',
);
}
foreach( $enabled_post_types as $post_type ) {
$support_post_types[] = $post_type;
}
$support_post_types = apply_filters( 'githuber_md_suppot_post_types', $support_post_types );
array_push( $support_post_types , 'revision');
foreach ( $support_post_types as $post_type ) {
add_post_type_support( $post_type, self::MD_POST_TYPE );
// Only use it in DEBUG mode.
githuber_logger( 'add_post_type_support', array( $post_type ) );
}
add_action( 'admin_init', array( $this, 'admin_init' ) );
$post_id = githuber_get_current_post_id();
$markdown_this_post = get_metadata( 'post', $post_id, self::MD_POST_META_ENABLED, true );
// Get post type from curren screen.
$current_post_type = githuber_get_current_post_type();
$args = array(
'public' => true,
'_builtin' => false, // for custom post types
'show_in_rest' => true, // for custom post types with Gutenberg editor enabled
);
$custom_post_types = get_post_types( $args );
// Feature request #98
if ( 'yes' === githuber_get_option( 'richeditor_by_default', 'githuber_preferences' ) ) {
if ( empty( $markdown_this_post ) || 'yes' !== $markdown_this_post ) {
$rich_editing = new RichEditing();
$rich_editing->enable();
if ( empty( $current_post_type ) || 'post' === $current_post_type || 'page' === $current_post_type || in_array( $current_post_type, $custom_post_types ) ) {
$rich_editing->enable_gutenberg();
}
$this->markdown_this_post = false;
}
}
if ( ! empty( $current_post_type ) && ! post_type_supports( githuber_get_current_post_type(), self::MD_POST_TYPE ) ) {
// We enable Rich editor if user not enable Markdown for current post type!
$rich_editing = new RichEditing();
$rich_editing->enable();
// Custom post types are not supporting Gutenberg by default for now, so
// We only enable Gutenberg for `post`, `page` and custom post types with Gutenberg enabled
if ( 'post' === $current_post_type || 'page' === $current_post_type || in_array( $current_post_type, $custom_post_types ) ) {
$rich_editing->enable_gutenberg();
}
} else {
// Markdown-per-post switcher.
if ( 'no' === $markdown_this_post ) {
$rich_editing = new RichEditing();
$rich_editing->enable();
if ( 'post' === $current_post_type || 'page' === $current_post_type || in_array( $current_post_type, $custom_post_types ) ) {
$rich_editing->enable_gutenberg();
}
} else {
// Tell YoastSEO, the Markdown is enable.
if ( 'yes' === githuber_get_option( 'support_wpseo_analysis', 'githuber_preferences' ) ) {
add_filter( 'wpseo_is_markdown_enabled', '__return_true' );
}
// Okay! User enable Markdown for current current post and it's post type.
$this->jetpack_code_snippets();
$this->maybe_unload_for_bulk_edit();
if ( 'yes' === githuber_get_option( 'html_to_markdown', 'githuber_markdown' ) ) {
$html2markdown = new Controller\HtmlToMarkdown();
$html2markdown->init();
}
if ( 'yes' === githuber_get_option( 'fetch_remote_image', 'githuber_markdown' ) ) {
$fetchRemoteImage = new Controller\FetchRemoteImage();
$fetchRemoteImage->init();
}
}
}
}
/**
* Register CSS style files.
*/
public function admin_enqueue_styles( $hook_suffix ) {
wp_enqueue_style( 'editmd', $this->githuber_plugin_url . '/assets/vendor/editor.md/css/editormd.min.css', array(), $this->editormd_varsion, 'all' );
}
/**
* Register JS files.
*/
public function admin_enqueue_scripts( $hook_suffix ) {
if ( ! post_type_supports( get_current_screen()->post_type, self::MD_POST_TYPE ) ) {
return;
}
$post_id = githuber_get_current_post_id();
$markdown_this_post = get_metadata( 'post', $post_id, self::MD_POST_META_ENABLED, true );
if ( 'no' === $markdown_this_post || ! $this->markdown_this_post ) {
} else {
wp_enqueue_script( 'editormd', $this->githuber_plugin_url . 'assets/vendor/editor.md/editormd.min.js', array( 'jquery' ), $this->editormd_varsion, true );
wp_enqueue_script( 'githuber-md', $this->githuber_plugin_url . 'assets/js/githuber-md.js', array( 'editormd' ), $this->version, true );
switch ( get_bloginfo( 'language' ) ) {
case 'zh-TW':
wp_enqueue_script( 'editor-md-lang', $this->githuber_plugin_url . 'assets/vendor/editor.md/languages/zh-tw.js', array(), $this->editormd_varsion, true );
break;
case 'zh-CN':
wp_enqueue_script( 'editor-md-lang', $this->githuber_plugin_url . 'assets/vendor/editor.md/languages/zh-cn.js', array(), $this->editormd_varsion, true );
break;
case 'en-US':
default:
wp_enqueue_script( 'editor-md-lang', $this->githuber_plugin_url . 'assets/vendor/editor.md/languages/en.js', array(), $this->editormd_varsion, true );
}
$editormd_config_list['markdown'] = array(
'editor_sync_scrolling',
'editor_live_preview',
'editor_image_paste',
'editor_html_decode',
'editor_toolbar_theme',
'editor_editor_theme',
'editor_line_number',
'editor_spell_check',
'editor_spell_check_lang',
'editor_match_highlighter',
);
$editormd_config_list['modules'] = array(
'support_emojify',
'support_katex',
'support_flowchart',
'support_sequence_diagram',
'support_mermaid',
'support_mathjax',
);
$editormd_config_list['extensions'] = array(
'support_task_list',
'support_inline_code_keyboard_style',
'support_html_figure',
);
$editormd_localize = array();
foreach ( $editormd_config_list as $key => $value ) {
foreach ( $value as $setting_name ) {
$editormd_localize[ $setting_name ] = githuber_get_option( $setting_name, 'githuber_' . $key );
}
}
$editormd_localize['editor_modules_url'] = $this->githuber_plugin_url . 'assets/vendor/editor.md/lib/';
$editormd_localize['plugin_vendor_url'] = $this->githuber_plugin_url . 'assets/vendor/';
$editormd_localize['editor_placeholder'] = __( 'Happy Markdowning!', 'wp-githuber-md' );
$editormd_localize['image_paste_callback'] = admin_url( 'admin-ajax.php?action=githuber_image_paste&post_id=' . $post_id . '&_wpnonce=' . wp_create_nonce( 'image_paste_action_' . $post_id ) );
$editormd_localize['prism_line_number'] = githuber_get_option( 'prism_line_number', 'githuber_modules' );
// Register JS variables for the Editormd library uses.
wp_localize_script( 'githuber-md', 'editormd_config', $editormd_localize );
}
/* @version 1.6.0 */
wp_enqueue_script( 'githuber-md-mpp', $this->githuber_plugin_url . 'assets/js/githuber-md-mpp.js', array( 'jquery' ), $this->version, true );
$metabox_data['ajax_url'] = admin_url( 'admin-ajax.php' );
$metabox_data['post_id'] = githuber_get_current_post_id();
wp_localize_script( 'githuber-md-mpp', 'markdown_this_post_config', $metabox_data );
}
/**
* Initalize to WP `admin_init` hook.
*/
public function admin_init() {
add_action( 'admin_enqueue_scripts', array( $this, 'admin_enqueue_styles' ) );
add_action( 'admin_enqueue_scripts', array( $this, 'admin_enqueue_scripts' ) );
if ( 'no' !== githuber_get_option( 'markdown_editor_switcher', 'githuber_markdown' ) ) {
/* @version 1.6.0 */
add_action( 'wp_ajax_githuber_markdown_this_post', array( $this, 'admin_githuber_markdown_this_post' ) );
// Add the sidebar metabox to posts.
$current_post_type = githuber_get_current_post_type();
// Only display metabox if current post-type supports Markdown.
if ( ! empty( $current_post_type) && post_type_supports( githuber_get_current_post_type(), self::MD_POST_TYPE ) ) {
add_action( 'add_meta_boxes', array( $this, 'add_meta_box' ) );
}
}
}
public function admin_init_meta_box() {
}
/**
* Markdown parser.
*
* @return object MarkdownParser instance.
*/
public static function get_parser()
{
if ( ! self::$parser_instance ) {
$is_markdown_extra = githuber_get_option( 'support_mardown_extra', 'githuber_extensions' );
if ( 'yes' === $is_markdown_extra ) {
self::$parser_instance = new Module\MarkdownExtraParser();
} else {
self::$parser_instance = new Module\MarkdownParser();
}
}
return self::$parser_instance;
}
/**
* Is Markdown conversion for posts or comments enabled?
*
* @param string $post_action_type The type of posting action.
* @return bool
*/
public function is_md_enabled( $post_action_type ) {
switch ( $post_action_type ) {
case 'posting':
return true;
break;
case 'commeting':
$setting = githuber_get_option( 'enable_markdown_for_comment', 'githuber_markdown' );
if ( isset( $setting[ $post_action_type ] ) && $setting[ $post_action_type ] === $post_action_type ) {
return true;
}
break;
}
return false;
}
/**
* Detect the language is defined through the way recommended in the HTML5 draft: through a language-xxxx class.
* Find out all of them, then put them into the post meta for frontend uses.
*
* @param int $post_id The post ID.
* @param string $post_content The post content.
* @return void
*/
public function detect_code_languages( $post_id, $post_content ) {
$prism_meta_array = array();
$highlight_meta_array = array();
delete_metadata( 'post', $post_id, self::MD_POST_META_PRISM);
delete_metadata( 'post', $post_id, self::MD_POST_META_HIGHLIGHT);
delete_metadata( 'post', $post_id, self::MD_POST_META_SEQUENCE);
delete_metadata( 'post', $post_id, self::MD_POST_META_FLOW);
$is_sequence = false;
$is_flowchart = false;
$is_mermaid = false;
$is_katex = false;
$is_mathjax = false;
if ( preg_match_all( '/<code class="language-([a-z\-0-9]+)"/', $post_content, $matches ) > 0 && ! empty( $matches[1] ) ) {
foreach ( $matches[1] as $match ) {
if ( ! empty( Module\Prism::$prism_codes[ $match ] ) ) {
$prism_meta_array[ $match ] = $match;
}
// Check if this componets requires the parent components or not.
if ( ! empty( Module\Prism::$prism_component_parent[ $match ] ) ) {
foreach ( Module\Prism::$prism_component_parent[ $match ] as $parent ) {
// If it need a parent componet, add it to the $paris_meta_array.
if ( empty( $prism_meta_array[ $parent ] ) ) {
$prism_meta_array[ $parent ] = $parent;
}
}
}
if ( ! empty( Module\Highlight::$highlight_codes[ $match ] ) ) {
$highlight_meta_array[ $match ] = $match;
}
if ( 'seq' === $match || 'sequence' === $match ) {
$is_sequence = true;
}
if ( 'flow' === $match || 'flowchart' === $match ) {
$is_flowchart = true;
}
if ( 'mermaid' === $match ) {
$is_mermaid = true;
}
if ( 'katex' === $match ) {
$is_katex = true;
}
if ( 'mathjax' === $match ) {
$is_mathjax = true;
}
}
}
// If we find inline KaTex syntax.
if ( strpos( $post_content, '<code class="katex-inline">' ) !== false ) {
$is_katex = true;
}
// If we find inline MathJax syntax.
if ( strpos( $post_content, '<code class="mathjax-inline language-mathjax">' ) !== false ) {
$is_mathjax = true;
}
// Combine array into a string.
$prism_meta_string = implode( ',', $prism_meta_array );
$highlight_meta_string = implode( ',', $highlight_meta_array );
// Store the string to post meta, for identifying what the syntax languages are used in current post.
if ( $this->is_support_prism && ! empty( $prism_meta_array ) ) {
update_metadata( 'post', $post_id, self::MD_POST_META_PRISM, $prism_meta_string );
} else {
update_metadata( 'post', $post_id, self::MD_POST_META_PRISM, '' );
}
if ( $this->is_support_highlight && ! empty( $highlight_meta_array ) ) {
update_metadata( 'post', $post_id, self::MD_POST_META_HIGHLIGHT, $highlight_meta_string );
} else {
update_metadata( 'post', $post_id, self::MD_POST_META_HIGHLIGHT, '' );
}
if ( $this->is_support_sequence && $is_sequence ) {
update_metadata( 'post', $post_id, self::MD_POST_META_SEQUENCE, true );
} else {
update_metadata( 'post', $post_id, self::MD_POST_META_SEQUENCE, false );
}
if ( $this->is_support_flowchart && $is_flowchart ) {
update_metadata( 'post', $post_id, self::MD_POST_META_FLOW, true );
} else {
update_metadata( 'post', $post_id, self::MD_POST_META_FLOW, false );
}
if ( $this->is_support_mermaid && $is_mermaid ) {
update_metadata( 'post', $post_id, self::MD_POST_META_MERMAID, true );
} else {
update_metadata( 'post', $post_id, self::MD_POST_META_MERMAID, false );
}
if ( $this->is_support_katex && $is_katex ) {
update_metadata( 'post', $post_id, self::MD_POST_META_KATEX, true );
} else {
update_metadata( 'post', $post_id, self::MD_POST_META_KATEX, false );
}
if ( $this->is_support_mathjax && $is_mathjax ) {
update_metadata( 'post', $post_id, self::MD_POST_META_MATHJAX, true );
} else {
update_metadata( 'post', $post_id, self::MD_POST_META_MATHJAX, false );
}
}
/**
* Register the `HtmlToMarkdown` meta box in the post-editor.
*/
public function add_meta_box() {
if ( ! githuber_current_user_can( 'edit_posts' ) ) {
return false;
}
add_meta_box(
'markdown_this_post_meta_box',
__( 'Enable Markdown', 'wp-githuber-md' ) . '<div class="bg-icon-md"></div>',
array( $this, 'show_meta_box' ),
null,
'side',
'high'
);
}
/**
* Show `HtmlToMarkdown` meta box.
*/
public function show_meta_box() {
$post_id = githuber_get_current_post_id();
$markdown_this_post = get_metadata( 'post', $post_id, self::MD_POST_META_ENABLED, true );
githuber_logger( 'Show meta box.', array(
'post_id' => $post_id,
'markdown_this_post' => $markdown_this_post,
) );
$data['markdown_this_post_choice'] = $markdown_this_post;
$data['is_markdown_this_post'] = $this->markdown_this_post;
echo githuber_load_view( 'metabox/markdown-per-post', $data );
}
/**
* Do action hook for per post Markdown control.
*/
public function admin_githuber_markdown_this_post() {
githuber_logger( 'Start an Ajax call.');
$response = array(
'success' => false,
'result' => '',
);
if ( ! empty( $_POST['post_id'] ) && ! empty( $_POST['markdown_this_post'] ) ) {
$post_id = (int) $_POST['post_id'];
$choice = $_POST['markdown_this_post'];
if ( 'yes' === $choice ) {
update_metadata( 'post', $post_id, self::MD_POST_META_ENABLED, 'yes' );
} else {
update_metadata( 'post', $post_id, self::MD_POST_META_ENABLED, 'no' );
}
$response = array(
'success' => true,
'result' => $choice,
'post_id' => $post_id,
);
githuber_logger( 'Post data is gotten.', array(
'post_id' => $_POST['post_id'],
'markdown_this_post' => $_POST['markdown_this_post'],
) );
}
header('Content-type: application/json');
echo json_encode( $response );
// To avoid wp_ajax return "0" string to break the vaild json string.
wp_die();
}
/**
* The below methods are from Jetpack: Markdown modular
* And we modified it for our needs.
*
* @link https://github.com/Automattic/jetpack/blob/master/modules/markdown/easy-markdown.php
* @license GPL
*/
public function jetpack_code_snippets() {
$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 );
}
}
/**
* If we're in a bulk edit session, unload so that we don't lose our markdown metadata
*/
public function maybe_unload_for_bulk_edit() {
if ( isset( $_REQUEST['bulk_edit'] ) && $this->is_md_enabled( 'posting' ) ) {
$this->unload_markdown( 'posting' );
}
}
/**
* 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
*/
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_md_enabled( 'posting' ) ) {
$this->load_markdown( 'posting' );
} else {
$this->unload_markdown( 'posting' );
}
if ( $this->is_md_enabled( 'commenting' ) ) {
$this->load_markdown( 'commenting' );
} else {
$this->unload_markdown( 'commenting' );
}
}
/**
* Set up hooks for enabling Markdown conversion on specfic post action.
*
* @param $post_action_type posting|commenting
* @return void
*/
public function load_markdown( $post_action_type ) {
switch ( $post_action_type ) {
case 'posting':
// Set up hooks for enabling Markdown conversion on posts
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();
}
break;
case 'commenting':
// 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 );
break;
default:
}
}
/**
* Removes hooks to disable Markdown conversion on specfic post action.
*
* @param $post_action_type posting|commenting
* @return void
*/
public function unload_markdown( $post_action_type ) {
switch ( $post_action_type ) {
case 'posting':
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 );
break;
case 'commenting':
remove_filter( 'pre_comment_content', array( $this, 'pre_comment_content' ), 9 );
break;
default:
}
}
/**
* 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;
}
/**
* Check if a $post_id has Markdown enabled
* @param int $post_id A post ID.
* @return bool
*/
public function has_markdown( $post_id ) {
if ( get_metadata( 'post', $post_id, self::MD_POST_META, true ) ) {
return true;
}
// Backward check Jetpack Markdown.
if ( get_metadata( 'post', $post_id, self::JETPACK_MD_POST_META, true ) ) {
return true;
}
return false;
}
/**
* 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::MD_POST_META, true );
}
/**
* 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->has_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_md_enabled( 'posting' ) && $this->has_markdown( $id ) ) {
$post = get_post( $id );
if ( $post && ! empty( $post->post_content_filtered ) ) {
$content = '';
}
}
return $content;
}
/**
* 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_md_enabled( 'posting' ) || ! post_type_supports( $post_data['post_type'], self::MD_POST_TYPE ) ) {
// it's disabled, but maybe this *was* a markdown post before.
if ( $this->has_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->restore_code_blocks( $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'] ) ) {
$post_data['post_content_filtered'] = $post_data['post_content'];
$post_data['post_content'] = $this->transform( $post_data['post_content'], array( 'id' => $post_id ) );
if ( $this->is_convert_remote_image() ) {
foreach ( FetchRemoteImage::$image_list as $image_info ) {
$post_data['post_content_filtered'] = str_replace( $image_info['before'], $image_info['after'], $post_data['post_content_filtered'] );
}
}
/** 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
$post_data['post_content_filtered'] = $post_data['post_content'];
$post_data['post_content'] = $this->transform( $post_data['post_content'], array( 'id' => $post_data['post_parent'] ) );
if ( $this->is_convert_remote_image() ) {
foreach ( FetchRemoteImage::$image_list as $image_info ) {
$post_data['post_content_filtered'] = str_replace( $image_info['before'], $image_info['after'], $post_data['post_content_filtered'] );
}
}
/** 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->has_markdown( $postarr['post_parent'] ) ) {
$this->monitoring['parent'][ $postarr['post_parent'] ] = true;
}
// Is it support Prism - syntax highlighter.
$this->detect_code_languages( $post_id, wp_unslash( $post_data['post_content'] ) );
$post_data['post_content'] = $this->fix_issue_209( $post_data['post_content'] );
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() ) {
$is_decode_code_blocks = ( 'yes' === githuber_get_option( 'decode_code_blocks', 'githuber_preferences' ) ) ? true : false;
$args = wp_parse_args( $args, array(
'id' => false,
'unslash' => true,
'decode_code_blocks' => $is_decode_code_blocks, // Fix: issue #30
//'decode_code_blocks' => false, // Fix: issue #30
) );
// probably need to unslash
if ( $args['unslash'] ) {
$text = wp_unslash( $text );
}
// 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()->remove_bare_p_tags( $text );
// sometimes we get an encoded > at start of line, breaking blockquotes
$text = preg_replace( '/^>/m', '>', $text );
// If we're not using the code shortcode, prevent over-encoding.
if ( $args['decode_code_blocks'] ) {
$text = $this->restore_code_blocks( $text );
}
// Transform it!
$text = $this->get_parser()->transform( $text );
// Fetch remote images.
if ( $this->is_convert_remote_image() ) {
$text = $this->convert_remote_image( $text );
}
// Render Github Flavored Markdown task lists if this module is enabled.
if ( $this->is_support_task_list ) {
$text = Module\TaskList::parse_gfm_task_list( $text );
}
// Render KaTeX inline markup.
if ( $this->is_support_katex ) {
$text = Module\KaTeX::katex_inline_markup( $text );
}
// Render MathJax inline markup.
if ( $this->is_support_mathjax ) {
$text = Module\MathJax::mathjax_inline_markup( $text );
}
// Markdown inserts extra spaces to make itself work. Buh-bye.
$text = rtrim( $text );
// 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
*/
public function wp_restore_post_revision( $post_id, $revision_id ) {
if ( $this->has_markdown( $revision_id ) ) {
$revision = get_post( $revision_id, ARRAY_A );
$post = get_post( $post_id, ARRAY_A );
// Yes, we put it in post_content, because our wp_insert_post_data() expects that
$post['post_content'] = $revision['post_content_filtered'];
// 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.
*/
protected function fix_latest_revision_on_restore( $post_id ) {
$post = get_post( $post_id );
$last_revision = self::$model_instance->get_lastest_revision( $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 void
*/
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.
*/
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.
*/
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->has_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->restore_code_blocks( $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.
*/
public function uncache_munged_posts() {
// $this context gets lost in testing sometimes. Weird.
foreach ( $this->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
*/
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->has_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;
}
/**
* 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 );
}
/**
* Restore code blocks.
*
* @param string $text post content
* @return string post content with code blocks unescaped
*/
public function restore_code_blocks( $text ) {
$text = $this->get_parser()->codeblock_restore( $text );
return $this->fix_issue_209( $text );
}
/**
* https://github.com/terrylinooo/githuber-md/issues/209
*
* @param string $text post content
* @return string post content with code blocks unescaped
*/
public function fix_issue_209( $text ) {
// Use a unique string `_!_!_` to replace `&#`, then covert it to `&#`
$text = str_replace( '_!_!_', '&#', $text );
return $text;
}
/**
* Force-disable Jetpack's Markdown module if it is active.
*
* @param array $modules Array of active Jetpack modules.
*
* @return array $modules Array of active Jetpack modules.
*/
public function admin_githuber_disable_jetpack_markdown( $modules ) {
$found = array_search( 'markdown', $modules, true );
if ( false !== $found ) {
unset( $modules[ $found ] );
}
return $modules;
}
/**
* Detect remote images.
*
* @param string $post_content
*
* @return string
*/
public function convert_remote_image( $post_content ) {
if ( $this->is_convert_remote_image() ) {
$post_content = FetchRemoteImage::covert( $post_content );
}
return $post_content ;
}
/**
* Is performing covert remote image.
*
* @return bool
*/
public function is_convert_remote_image() {
if ( 'yes' === githuber_get_option( 'fetch_remote_image', 'githuber_markdown' ) ) {
if ( isset( $_POST['fetch_remote_image'] ) && 'yes' === $_POST['fetch_remote_image'] ) {
return true;
}
}
return false;
}
}