<?php
/**
 * Post revision functions.
 *
 * @package WordPress
 * @subpackage Post_Revisions
 */

/**
 * Determines which fields of posts are to be saved in revisions.
 *
 * @since 2.6.0
 * @since 4.5.0 A `WP_Post` object can now be passed to the `$post` parameter.
 * @since 4.5.0 The optional `$autosave` parameter was deprecated and renamed to `$deprecated`.
 * @access private
 *
 * @param array|WP_Post $post       Optional. A post array or a WP_Post object being processed
 *                                  for insertion as a post revision. Default empty array.
 * @param bool          $deprecated Not used.
 * @return string[] Array of fields that can be versioned.
 */
function _wp_post_revision_fields( $post = array(), $deprecated = false ) {
	static $fields = null;

if ( ! is_array( $post ) ) {
		$post = get_post( $post, ARRAY_A );
	}

if ( is_null( $fields ) ) {
		// Allow these to be versioned.
		$fields = array(
			'post_title'   => __( 'Title' ),
			'post_content' => __( 'Content' ),
			'post_excerpt' => __( 'Excerpt' ),
		);
	}

/**
	 * Filters the list of fields saved in post revisions.
	 *
	 * Included by default: 'post_title', 'post_content' and 'post_excerpt'.
	 *
	 * Disallowed fields: 'ID', 'post_name', 'post_parent', 'post_date',
	 * 'post_date_gmt', 'post_status', 'post_type', 'comment_count',
	 * and 'post_author'.
	 *
	 * @since 2.6.0
	 * @since 4.5.0 The `$post` parameter was added.
	 *
	 * @param string[] $fields List of fields to revision. Contains 'post_title',
	 *                         'post_content', and 'post_excerpt' by default.
	 * @param array    $post   A post array being processed for insertion as a post revision.
	 */
	$fields = apply_filters( '_wp_post_revision_fields', $fields, $post );

// WP uses these internally either in versioning or elsewhere - they cannot be versioned.
	foreach ( array( 'ID', 'post_name', 'post_parent', 'post_date', 'post_date_gmt', 'post_status', 'post_type', 'comment_count', 'post_author' ) as $protect ) {
		unset( $fields[ $protect ] );
	}

return $fields;
}

/**
 * Returns a post array ready to be inserted into the posts table as a post revision.
 *
 * @since 4.5.0
 * @access private
 *
 * @param array|WP_Post $post     Optional. A post array or a WP_Post object to be processed
 *                                for insertion as a post revision. Default empty array.
 * @param bool          $autosave Optional. Is the revision an autosave? Default false.
 * @return array Post array ready to be inserted as a post revision.
 */
function _wp_post_revision_data( $post = array(), $autosave = false ) {
	if ( ! is_array( $post ) ) {
		$post = get_post( $post, ARRAY_A );
	}

$fields = _wp_post_revision_fields( $post );

$revision_data = array();

foreach ( array_intersect( array_keys( $post ), array_keys( $fields ) ) as $field ) {
		$revision_data[ $field ] = $post[ $field ];
	}

$revision_data['post_parent']   = $post['ID'];
	$revision_data['post_status']   = 'inherit';
	$revision_data['post_type']     = 'revision';
	$revision_data['post_name']     = $autosave ? "$post[ID]-autosave-v1" : "$post[ID]-revision-v1"; // "1" is the revisioning system version.
	$revision_data['post_date']     = isset( $post['post_modified'] ) ? $post['post_modified'] : '';
	$revision_data['post_date_gmt'] = isset( $post['post_modified_gmt'] ) ? $post['post_modified_gmt'] : '';

return $revision_data;
}

/**
 * Saves revisions for a post after all changes have been made.
 *
 * @since 6.4.0
 *
 * @param int     $post_id The post id that was inserted.
 * @param WP_Post $post    The post object that was inserted.
 * @param bool    $update  Whether this insert is updating an existing post.
 */
function wp_save_post_revision_on_insert( $post_id, $post, $update ) {
	if ( ! $update ) {
		return;
	}

if ( ! has_action( 'post_updated', 'wp_save_post_revision' ) ) {
		return;
	}

wp_save_post_revision( $post_id );
}

/**
 * Creates a revision for the current version of a post.
 *
 * Typically used immediately after a post update, as every update is a revision,
 * and the most recent revision always matches the current post.
 *
 * @since 2.6.0
 *
 * @param int $post_id The ID of the post to save as a revision.
 * @return int|WP_Error|void Void or 0 if error, new revision ID, if success.
 */
function wp_save_post_revision( $post_id ) {
	if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
		return;
	}

// Prevent saving post revisions if revisions should be saved on wp_after_insert_post.
	if ( doing_action( 'post_updated' ) && has_action( 'wp_after_insert_post', 'wp_save_post_revision_on_insert' ) ) {
		return;
	}

$post = get_post( $post_id );

if ( ! $post ) {
		return;
	}

if ( ! post_type_supports( $post->post_type, 'revisions' ) ) {
		return;
	}

if ( 'auto-draft' === $post->post_status ) {
		return;
	}

if ( ! wp_revisions_enabled( $post ) ) {
		return;
	}

/*
	 * Compare the proposed update with the last stored revision verifying that
	 * they are different, unless a plugin tells us to always save regardless.
	 * If no previous revisions, save one.
	 */
	$revisions = wp_get_post_revisions( $post_id );
	if ( $revisions ) {
		// Grab the latest revision, but not an autosave.
		foreach ( $revisions as $revision ) {
			if ( str_contains( $revision->post_name, "{$revision->post_parent}-revision" ) ) {
				$latest_revision = $revision;
				break;
			}
		}

/**
		 * Filters whether the post has changed since the latest revision.
		 *
		 * By default a revision is saved only if one of the revisioned fields has changed.
		 * This filter can override that so a revision is saved even if nothing has changed.
		 *
		 * @since 3.6.0
		 *
		 * @param bool    $check_for_changes Whether to check for changes before saving a new revision.
		 *                                   Default true.
		 * @param WP_Post $latest_revision   The latest revision post object.
		 * @param WP_Post $post              The post object.
		 */
		if ( isset( $latest_revision ) && apply_filters( 'wp_save_post_revision_check_for_changes', true, $latest_revision, $post ) ) {
			$post_has_changed = false;

foreach ( array_keys( _wp_post_revision_fields( $post ) ) as $field ) {
				if ( normalize_whitespace( $post->$field ) !== normalize_whitespace( $latest_revision->$field ) ) {
					$post_has_changed = true;
					break;
				}
			}

/**
			 * Filters whether a post has changed.
			 *
			 * By default a revision is saved only if one of the revisioned fields has changed.
			 * This filter allows for additional checks to determine if there were changes.
			 *
			 * @since 4.1.0
			 *
			 * @param bool    $post_has_changed Whether the post has changed.
			 * @param WP_Post $latest_revision  The latest revision post object.
			 * @param WP_Post $post             The post object.
			 */
			$post_has_changed = (bool) apply_filters( 'wp_save_post_revision_post_has_changed', $post_has_changed, $latest_revision, $post );

// Don't save revision if post unchanged.
			if ( ! $post_has_changed ) {
				return;
			}
		}
	}

$return = _wp_put_post_revision( $post );

/*
	 * If a limit for the number of revisions to keep has been set,
	 * delete the oldest ones.
	 */
	$revisions_to_keep = wp_revisions_to_keep( $post );

if ( $revisions_to_keep < 0 ) {
		return $return;
	}

$revisions = wp_get_post_revisions( $post_id, array( 'order' => 'ASC' ) );

/**
	 * Filters the revisions to be considered for deletion.
	 *
	 * @since 6.2.0
	 *
	 * @param WP_Post[] $revisions Array of revisions, or an empty array if none.
	 * @param int       $post_id   The ID of the post to save as a revision.
	 */
	$revisions = apply_filters(
		'wp_save_post_revision_revisions_before_deletion',
		$revisions,
		$post_id
	);

$delete = count( $revisions ) - $revisions_to_keep;

if ( $delete < 1 ) {
		return $return;
	}

$revisions = array_slice( $revisions, 0, $delete );

for ( $i = 0; isset( $revisions[ $i ] ); $i++ ) {
		if ( str_contains( $revisions[ $i ]->post_name, 'autosave' ) ) {
			continue;
		}

wp_delete_post_revision( $revisions[ $i ]->ID );
	}

return $return;
}

/**
 * Retrieves the autosaved data of the specified post.
 *
 * Returns a post object with the information that was autosaved for the specified post.
 * If the optional $user_id is passed, returns the autosave for that user, otherwise
 * returns the latest autosave.
 *
 * @since 2.6.0
 *
 * @param int $post_id The post ID.
 * @param int $user_id Optional. The post author ID. Default 0.
 * @return WP_Post|false The autosaved data or false on failure or when no autosave exists.
 */
function wp_get_post_autosave( $post_id, $user_id = 0 ) {
	$args = array(
		'post_type'      => 'revision',
		'post_status'    => 'inherit',
		'post_parent'    => $post_id,
		'name'           => $post_id . '-autosave-v1',
		'posts_per_page' => 1,
		'orderby'        => 'date',
		'order'          => 'DESC',
		'fields'         => 'ids',
		'no_found_rows'  => true,
	);

if ( 0 !== $user_id ) {
		$args['author'] = $user_id;
	}

$query = new WP_Query( $args );

if ( ! $query->have_posts() ) {
		return false;
	}

return get_post( $query->posts[0] );
}

/**
 * Determines if the specified post is a revision.
 *
 * @since 2.6.0
 *
 * @param int|WP_Post $post Post ID or post object.
 * @return int|false ID of revision's parent on success, false if not a revision.
 */
function wp_is_post_revision( $post ) {
	$post = wp_get_post_revision( $post );

if ( ! $post ) {
		return false;
	}

return (int) $post->post_parent;
}

/**
 * Determines if the specified post is an autosave.
 *
 * @since 2.6.0
 *
 * @param int|WP_Post $post Post ID or post object.
 * @return int|false ID of autosave's parent on success, false if not a revision.
 */
function wp_is_post_autosave( $post ) {
	$post = wp_get_post_revision( $post );

if ( ! $post ) {
		return false;
	}

if ( str_contains( $post->post_name, "{$post->post_parent}-autosave" ) ) {
		return (int) $post->post_parent;
	}

return false;
}

/**
 * Inserts post data into the posts table as a post revision.
 *
 * @since 2.6.0
 * @access private
 *
 * @param int|WP_Post|array|null $post     Post ID, post object OR post array.
 * @param bool                   $autosave Optional. Whether the revision is an autosave or not.
 *                                         Default false.
 * @return int|WP_Error WP_Error or 0 if error, new revision ID if success.
 */
function _wp_put_post_revision( $post = null, $autosave = false ) {
	if ( is_object( $post ) ) {
		$post = get_object_vars( $post );
	} elseif ( ! is_array( $post ) ) {
		$post = get_post( $post, ARRAY_A );
	}

if ( ! $post || empty( $post['ID'] ) ) {
		return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
	}

if ( isset( $post['post_type'] ) && 'revision' === $post['post_type'] ) {
		return new WP_Error( 'post_type', __( 'Cannot create a revision of a revision' ) );
	}

$post = _wp_post_revision_data( $post, $autosave );
	$post = wp_slash( $post ); // Since data is from DB.

$revision_id = wp_insert_post( $post, true );
	if ( is_wp_error( $revision_id ) ) {
		return $revision_id;
	}

if ( $revision_id ) {
		/**
		 * Fires once a revision has been saved.
		 *
		 * @since 2.6.0
		 * @since 6.4.0 The post_id parameter was added.
		 *
		 * @param int $revision_id Post revision ID.
		 * @param int $post_id     Post ID.
		 */
		do_action( '_wp_put_post_revision', $revision_id, $post['post_parent'] );
	}

return $revision_id;
}

/**
 * Save the revisioned meta fields.
 *
 * @since 6.4.0
 *
 * @param int $revision_id The ID of the revision to save the meta to.
 * @param int $post_id     The ID of the post the revision is associated with.
 */
function wp_save_revisioned_meta_fields( $revision_id, $post_id ) {
	$post_type = get_post_type( $post_id );
	if ( ! $post_type ) {
		return;
	}

foreach ( wp_post_revision_meta_keys( $post_type ) as $meta_key ) {
		if ( metadata_exists( 'post', $post_id, $meta_key ) ) {
			_wp_copy_post_meta( $post_id, $revision_id, $meta_key );
		}
	}
}

/**
 * Gets a post revision.
 *
 * @since 2.6.0
 *
 * @param int|WP_Post $post   Post ID or post object.
 * @param string      $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
 *                            correspond to a WP_Post object, an associative array, or a numeric array,
 *                            respectively. Default OBJECT.
 * @param string      $filter Optional sanitization filter. See sanitize_post(). Default 'raw'.
 * @return WP_Post|array|null WP_Post (or array) on success, or null on failure.
 */
function wp_get_post_revision( &$post, $output = OBJECT, $filter = 'raw' ) {
	$revision = get_post( $post, OBJECT, $filter );

if ( ! $revision ) {
		return $revision;
	}

if ( 'revision' !== $revision->post_type ) {
		return null;
	}

if ( OBJECT === $output ) {
		return $revision;
	} elseif ( ARRAY_A === $output ) {
		$_revision = get_object_vars( $revision );
		return $_revision;
	} elseif ( ARRAY_N === $output ) {
		$_revision = array_values( get_object_vars( $revision ) );
		return $_revision;
	}

return $revision;
}

/**
 * Restores a post to the specified revision.
 *
 * Can restore a past revision using all fields of the post revision, or only selected fields.
 *
 * @since 2.6.0
 *
 * @param int|WP_Post $revision Revision ID or revision object.
 * @param array       $fields   Optional. What fields to restore from. Defaults to all.
 * @return int|false|null Null if error, false if no fields to restore, (int) post ID if success.
 */
function wp_restore_post_revision( $revision, $fields = null ) {
	$revision = wp_get_post_revision( $revision, ARRAY_A );

if ( ! $revision ) {
		return $revision;
	}

if ( ! is_array( $fields ) ) {
		$fields = array_keys( _wp_post_revision_fields( $revision ) );
	}

$update = array();
	foreach ( array_intersect( array_keys( $revision ), $fields ) as $field ) {
		$update[ $field ] = $revision[ $field ];
	}

if ( ! $update ) {
		return false;
	}

$update['ID'] = $revision['post_parent'];

$update = wp_slash( $update ); // Since data is from DB.

$post_id = wp_update_post( $update );

if ( ! $post_id || is_wp_error( $post_id ) ) {
		return $post_id;
	}

// Update last edit user.
	update_post_meta( $post_id, '_edit_last', get_current_user_id() );

/**
	 * Fires after a post revision has been restored.
	 *
	 * @since 2.6.0
	 *
	 * @param int $post_id     Post ID.
	 * @param int $revision_id Post revision ID.
	 */
	do_action( 'wp_restore_post_revision', $post_id, $revision['ID'] );

return $post_id;
}

/**
 * Restore the revisioned meta values for a post.
 *
 * @since 6.4.0
 *
 * @param int $post_id     The ID of the post to restore the meta to.
 * @param int $revision_id The ID of the revision to restore the meta from.
 */
function wp_restore_post_revision_meta( $post_id, $revision_id ) {
	$post_type = get_post_type( $post_id );
	if ( ! $post_type ) {
		return;
	}

// Restore revisioned meta fields.
	foreach ( wp_post_revision_meta_keys( $post_type ) as $meta_key ) {

// Clear any existing meta.
		delete_post_meta( $post_id, $meta_key );

_wp_copy_post_meta( $revision_id, $post_id, $meta_key );
	}
}

/**
 * Copy post meta for the given key from one post to another.
 *
 * @since 6.4.0
 *
 * @param int    $source_post_id Post ID to copy meta value(s) from.
 * @param int    $target_post_id Post ID to copy meta value(s) to.
 * @param string $meta_key       Meta key to copy.
 */
function _wp_copy_post_meta( $source_post_id, $target_post_id, $meta_key ) {

foreach ( get_post_meta( $source_post_id, $meta_key ) as $meta_value ) {
		/**
		 * We use add_metadata() function vs add_post_meta() here
		 * to allow for a revision post target OR regular post.
		 */
		add_metadata( 'post', $target_post_id, $meta_key, wp_slash( $meta_value ) );
	}
}

/**
 * Determine which post meta fields should be revisioned.
 *
 * @since 6.4.0
 *
 * @param string $post_type The post type being revisioned.
 * @return array An array of meta keys to be revisioned.
 */
function wp_post_revision_meta_keys( $post_type ) {
	$registered_meta = array_merge(
		get_registered_meta_keys( 'post' ),
		get_registered_meta_keys( 'post', $post_type )
	);

$wp_revisioned_meta_keys = array();

foreach ( $registered_meta as $name => $args ) {
		if ( $args['revisions_enabled'] ) {
			$wp_revisioned_meta_keys[ $name ] = true;
		}
	}

$wp_revisioned_meta_keys = array_keys( $wp_revisioned_meta_keys );

/**
	 * Filter the list of post meta keys to be revisioned.
	 *
	 * @since 6.4.0
	 *
	 * @param array  $keys      An array of meta fields to be revisioned.
	 * @param string $post_type The post type being revisioned.
	 */
	return apply_filters( 'wp_post_revision_meta_keys', $wp_revisioned_meta_keys, $post_type );
}

/**
 * Check whether revisioned post meta fields have changed.
 *
 * @since 6.4.0
 *
 * @param bool    $post_has_changed Whether the post has changed.
 * @param WP_Post $last_revision    The last revision post object.
 * @param WP_Post $post             The post object.
 * @return bool Whether the post has changed.
 */
function wp_check_revisioned_meta_fields_have_changed( $post_has_changed, WP_Post $last_revision, WP_Post $post ) {
	foreach ( wp_post_revision_meta_keys( $post->post_type ) as $meta_key ) {
		if ( get_post_meta( $post->ID, $meta_key ) !== get_post_meta( $last_revision->ID, $meta_key ) ) {
			$post_has_changed = true;
			break;
		}
	}
	return $post_has_changed;
}

/**
 * Deletes a revision.
 *
 * Deletes the row from the posts table corresponding to the specified revision.
 *
 * @since 2.6.0
 *
 * @param int|WP_Post $revision Revision ID or revision object.
 * @return WP_Post|false|null Null or false if error, deleted post object if success.
 */
function wp_delete_post_revision( $revision ) {
	$revision = wp_get_post_revision( $revision );

if ( ! $revision ) {
		return $revision;
	}

$delete = wp_delete_post( $revision->ID );

if ( $delete ) {
		/**
		 * Fires once a post revision has been deleted.
		 *
		 * @since 2.6.0
		 *
		 * @param int     $revision_id Post revision ID.
		 * @param WP_Post $revision    Post revision object.
		 */
		do_action( 'wp_delete_post_revision', $revision->ID, $revision );
	}

return $delete;
}

/**
 * Returns all revisions of specified post.
 *
 * @since 2.6.0
 *
 * @see get_children()
 *
 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`.
 * @param array|null  $args Optional. Arguments for retrieving post revisions. Default null.
 * @return WP_Post[]|int[] Array of revision objects or IDs, or an empty array if none.
 */
function wp_get_post_revisions( $post = 0, $args = null ) {
	$post = get_post( $post );

if ( ! $post || empty( $post->ID ) ) {
		return array();
	}

$defaults = array(
		'order'         => 'DESC',
		'orderby'       => 'date ID',
		'check_enabled' => true,
	);
	$args     = wp_parse_args( $args, $defaults );

if ( $args['check_enabled'] && ! wp_revisions_enabled( $post ) ) {
		return array();
	}

$args = array_merge(
		$args,
		array(
			'post_parent' => $post->ID,
			'post_type'   => 'revision',
			'post_status' => 'inherit',
		)
	);

$revisions = get_children( $args );

if ( ! $revisions ) {
		return array();
	}

return $revisions;
}

/**
 * Returns the latest revision ID and count of revisions for a post.
 *
 * @since 6.1.0
 *
 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
 * @return array|WP_Error {
 *     Returns associative array with latest revision ID and total count,
 *     or a WP_Error if the post does not exist or revisions are not enabled.
 *
 *     @type int $latest_id The latest revision post ID or 0 if no revisions exist.
 *     @type int $count     The total count of revisions for the given post.
 * }
 */
function wp_get_latest_revision_id_and_total_count( $post = 0 ) {
	$post = get_post( $post );

if ( ! $post ) {
		return new WP_Error( 'invalid_post', __( 'Invalid post.' ) );
	}

if ( ! wp_revisions_enabled( $post ) ) {
		return new WP_Error( 'revisions_not_enabled', __( 'Revisions not enabled.' ) );
	}

$args = array(
		'post_parent'         => $post->ID,
		'fields'              => 'ids',
		'post_type'           => 'revision',
		'post_status'         => 'inherit',
		'order'               => 'DESC',
		'orderby'             => 'date ID',
		'posts_per_page'      => 1,
		'ignore_sticky_posts' => true,
	);

$revision_query = new WP_Query();
	$revisions      = $revision_query->query( $args );

if ( ! $revisions ) {
		return array(
			'latest_id' => 0,
			'count'     => 0,
		);
	}

return array(
		'latest_id' => $revisions[0],
		'count'     => $revision_query->found_posts,
	);
}

/**
 * Returns the url for viewing and potentially restoring revisions of a given post.
 *
 * @since 5.9.0
 *
 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`.
 * @return string|null The URL for editing revisions on the given post, otherwise null.
 */
function wp_get_post_revisions_url( $post = 0 ) {
	$post = get_post( $post );

if ( ! $post instanceof WP_Post ) {
		return null;
	}

// If the post is a revision, return early.
	if ( 'revision' === $post->post_type ) {
		return get_edit_post_link( $post );
	}

if ( ! wp_revisions_enabled( $post ) ) {
		return null;
	}

$revisions = wp_get_latest_revision_id_and_total_count( $post->ID );

if ( is_wp_error( $revisions ) || 0 === $revisions['count'] ) {
		return null;
	}

return get_edit_post_link( $revisions['latest_id'] );
}

/**
 * Determines whether revisions are enabled for a given post.
 *
 * @since 3.6.0
 *
 * @param WP_Post $post The post object.
 * @return bool True if number of revisions to keep isn't zero, false otherwise.
 */
function wp_revisions_enabled( $post ) {
	return wp_revisions_to_keep( $post ) !== 0;
}

/**
 * Determines how many revisions to retain for a given post.
 *
 * By default, an infinite number of revisions are kept.
 *
 * The constant WP_POST_REVISIONS can be set in wp-config to specify the limit
 * of revisions to keep.
 *
 * @since 3.6.0
 *
 * @param WP_Post $post The post object.
 * @return int The number of revisions to keep.
 */
function wp_revisions_to_keep( $post ) {
	$num = WP_POST_REVISIONS;

if ( true === $num ) {
		$num = -1;
	} else {
		$num = (int) $num;
	}

if ( ! post_type_supports( $post->post_type, 'revisions' ) ) {
		$num = 0;
	}

/**
	 * Filters the number of revisions to save for the given post.
	 *
	 * Overrides the value of WP_POST_REVISIONS.
	 *
	 * @since 3.6.0
	 *
	 * @param int     $num  Number of revisions to store.
	 * @param WP_Post $post Post object.
	 */
	$num = apply_filters( 'wp_revisions_to_keep', $num, $post );

/**
	 * Filters the number of revisions to save for the given post by its post type.
	 *
	 * Overrides both the value of WP_POST_REVISIONS and the {@see 'wp_revisions_to_keep'} filter.
	 *
	 * The dynamic portion of the hook name, `$post->post_type`, refers to
	 * the post type slug.
	 *
	 * Possible hook names include:
	 *
	 *  - `wp_post_revisions_to_keep`
	 *  - `wp_page_revisions_to_keep`
	 *
	 * @since 5.8.0
	 *
	 * @param int     $num  Number of revisions to store.
	 * @param WP_Post $post Post object.
	 */
	$num = apply_filters( "wp_{$post->post_type}_revisions_to_keep", $num, $post );

return (int) $num;
}

/**
 * Sets up the post object for preview based on the post autosave.
 *
 * @since 2.7.0
 * @access private
 *
 * @param WP_Post $post
 * @return WP_Post|false
 */
function _set_preview( $post ) {
	if ( ! is_object( $post ) ) {
		return $post;
	}

$preview = wp_get_post_autosave( $post->ID );

if ( is_object( $preview ) ) {
		$preview = sanitize_post( $preview );

$post->post_content = $preview->post_content;
		$post->post_title   = $preview->post_title;
		$post->post_excerpt = $preview->post_excerpt;
	}

add_filter( 'get_the_terms', '_wp_preview_terms_filter', 10, 3 );
	add_filter( 'get_post_metadata', '_wp_preview_post_thumbnail_filter', 10, 3 );
	add_filter( 'get_post_metadata', '_wp_preview_meta_filter', 10, 4 );

return $post;
}

/**
 * Filters the latest content for preview from the post autosave.
 *
 * @since 2.7.0
 * @access private
 */
function _show_post_preview() {
	if ( isset( $_GET['preview_id'] ) && isset( $_GET['preview_nonce'] ) ) {
		$id = (int) $_GET['preview_id'];

if ( false === wp_verify_nonce( $_GET['preview_nonce'], 'post_preview_' . $id ) ) {
			wp_die( __( 'Sorry, you are not allowed to preview drafts.' ), 403 );
		}

add_filter( 'the_preview', '_set_preview' );
	}
}

/**
 * Filters terms lookup to set the post format.
 *
 * @since 3.6.0
 * @access private
 *
 * @param array  $terms
 * @param int    $post_id
 * @param string $taxonomy
 * @return array
 */
function _wp_preview_terms_filter( $terms, $post_id, $taxonomy ) {
	$post = get_post();

if ( ! $post ) {
		return $terms;
	}

if ( empty( $_REQUEST['post_format'] ) || $post->ID !== $post_id
		|| 'post_format' !== $taxonomy || 'revision' === $post->post_type
	) {
		return $terms;
	}

if ( 'standard' === $_REQUEST['post_format'] ) {
		$terms = array();
	} else {
		$term = get_term_by( 'slug', 'post-format-' . sanitize_key( $_REQUEST['post_format'] ), 'post_format' );

if ( $term ) {
			$terms = array( $term ); // Can only have one post format.
		}
	}

return $terms;
}

/**
 * Filters post thumbnail lookup to set the post thumbnail.
 *
 * @since 4.6.0
 * @access private
 *
 * @param null|array|string $value    The value to return - a single metadata value, or an array of values.
 * @param int               $post_id  Post ID.
 * @param string            $meta_key Meta key.
 * @return null|array The default return value or the post thumbnail meta array.
 */
function _wp_preview_post_thumbnail_filter( $value, $post_id, $meta_key ) {
	$post = get_post();

if ( ! $post ) {
		return $value;
	}

if ( empty( $_REQUEST['_thumbnail_id'] ) || empty( $_REQUEST['preview_id'] )
		|| $post->ID !== $post_id || $post_id !== (int) $_REQUEST['preview_id']
		|| '_thumbnail_id' !== $meta_key || 'revision' === $post->post_type
	) {
		return $value;
	}

$thumbnail_id = (int) $_REQUEST['_thumbnail_id'];

if ( $thumbnail_id <= 0 ) {
		return '';
	}

return (string) $thumbnail_id;
}

/**
 * Gets the post revision version.
 *
 * @since 3.6.0
 * @access private
 *
 * @param WP_Post $revision
 * @return int|false
 */
function _wp_get_post_revision_version( $revision ) {
	if ( is_object( $revision ) ) {
		$revision = get_object_vars( $revision );
	} elseif ( ! is_array( $revision ) ) {
		return false;
	}

if ( preg_match( '/^\d+-(?:autosave|revision)-v(\d+)$/', $revision['post_name'], $matches ) ) {
		return (int) $matches[1];
	}

return 0;
}

/**
 * Upgrades the revisions author, adds the current post as a revision and sets the revisions version to 1.
 *
 * @since 3.6.0
 * @access private
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param WP_Post $post      Post object.
 * @param array   $revisions Current revisions of the post.
 * @return bool true if the revisions were upgraded, false if problems.
 */
function _wp_upgrade_revisions_of_post( $post, $revisions ) {
	global $wpdb;

// Add post option exclusively.
	$lock   = "revision-upgrade-{$post->ID}";
	$now    = time();
	$result = $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` (`option_name`, `option_value`, `autoload`) VALUES (%s, %s, 'off') /* LOCK */", $lock, $now ) );

if ( ! $result ) {
		// If we couldn't get a lock, see how old the previous lock is.
		$locked = get_option( $lock );

if ( ! $locked ) {
			/*
			 * Can't write to the lock, and can't read the lock.
			 * Something broken has happened.
			 */
			return false;
		}

if ( $locked > $now - HOUR_IN_SECONDS ) {
			// Lock is not too old: some other process may be upgrading this post. Bail.
			return false;
		}

// Lock is too old - update it (below) and continue.
	}

// If we could get a lock, re-"add" the option to fire all the correct filters.
	update_option( $lock, $now );

reset( $revisions );
	$add_last = true;

do {
		$this_revision = current( $revisions );
		$prev_revision = next( $revisions );

$this_revision_version = _wp_get_post_revision_version( $this_revision );

// Something terrible happened.
		if ( false === $this_revision_version ) {
			continue;
		}

/*
		 * 1 is the latest revision version, so we're already up to date.
		 * No need to add a copy of the post as latest revision.
		 */
		if ( 0 < $this_revision_version ) {
			$add_last = false;
			continue;
		}

// Always update the revision version.
		$update = array(
			'post_name' => preg_replace( '/^(\d+-(?:autosave|revision))[\d-]*$/', '$1-v1', $this_revision->post_name ),
		);

/*
		 * If this revision is the oldest revision of the post, i.e. no $prev_revision,
		 * the correct post_author is probably $post->post_author, but that's only a good guess.
		 * Update the revision version only and Leave the author as-is.
		 */
		if ( $prev_revision ) {
			$prev_revision_version = _wp_get_post_revision_version( $prev_revision );

// If the previous revision is already up to date, it no longer has the information we need :(
			if ( $prev_revision_version < 1 ) {
				$update['post_author'] = $prev_revision->post_author;
			}
		}

// Upgrade this revision.
		$result = $wpdb->update( $wpdb->posts, $update, array( 'ID' => $this_revision->ID ) );

if ( $result ) {
			wp_cache_delete( $this_revision->ID, 'posts' );
		}
	} while ( $prev_revision );

delete_option( $lock );

// Add a copy of the post as latest revision.
	if ( $add_last ) {
		wp_save_post_revision( $post->ID );
	}

return true;
}

/**
 * Filters preview post meta retrieval to get values from the autosave.
 *
 * Filters revisioned meta keys only.
 *
 * @since 6.4.0
 *
 * @param mixed  $value     Meta value to filter.
 * @param int    $object_id Object ID.
 * @param string $meta_key  Meta key to filter a value for.
 * @param bool   $single    Whether to return a single value.
 * @return mixed Original meta value if the meta key isn't revisioned, the object doesn't exist,
 *               the post type is a revision or the post ID doesn't match the object ID.
 *               Otherwise, the revisioned meta value is returned for the preview.
 */
function _wp_preview_meta_filter( $value, $object_id, $meta_key, $single ) {
	$post = get_post();

if ( empty( $post )
		|| $post->ID !== $object_id
		|| ! in_array( $meta_key, wp_post_revision_meta_keys( $post->post_type ), true )
		|| 'revision' === $post->post_type
	) {
		return $value;
	}

$preview = wp_get_post_autosave( $post->ID );

if ( false === $preview ) {
		return $value;
	}

return get_post_meta( $preview->ID, $meta_key, $single );
}

Nama File / Folder	Size	Action
ID3	--	NONE
IXR	--	NONE
PHPMailer	--	NONE
Requests	--	NONE
SimplePie	--	NONE
Text	--	NONE
abilities-api	--	NONE
assets	--	NONE
block-bindings	--	NONE
block-patterns	--	NONE
block-supports	--	NONE
blocks	--	NONE
certificates	--	NONE
css	--	NONE
customize	--	NONE
fonts	--	NONE
html-api	--	NONE
images	--	NONE
interactivity-api	--	NONE
js	--	NONE
l10n	--	NONE
php-compat	--	NONE
pomo	--	NONE
rest-api	--	NONE
sitemaps	--	NONE
sodium_compat	--	NONE
style-engine	--	NONE
theme-compat	--	NONE
widgets	--	NONE
222.php	15.759KB	Hapus Edit Rename
abilities-api.php	23.798KB	Hapus Edit Rename
abilities.php	7.796KB	Hapus Edit Rename
admin-bar.php	36.1KB	Hapus Edit Rename
adminfuns.php	5.954KB	Hapus Edit Rename
author-template.php	18.937KB	Hapus Edit Rename
block-editor.php	28.596KB	Hapus Edit Rename
block-i18n.json	0.309KB	Hapus Edit Rename
block-patterns.php	12.903KB	Hapus Edit Rename
block-template.php	14.999KB	Hapus Edit Rename
bookmark-template.php	12.469KB	Hapus Edit Rename
cache.php	13.17KB	Hapus Edit Rename
canonical.php	33.833KB	Hapus Edit Rename
capabilities.php	42.629KB	Hapus Edit Rename
category-template.php	55.708KB	Hapus Edit Rename
class-IXR.php	2.555KB	Hapus Edit Rename
class-avif-info.php	28.921KB	Hapus Edit Rename
class-feed.php	0.526KB	Hapus Edit Rename
class-http.php	0.358KB	Hapus Edit Rename
class-json.php	42.652KB	Hapus Edit Rename
class-oembed.php	0.392KB	Hapus Edit Rename
class-phpass.php	6.612KB	Hapus Edit Rename
class-phpmailer.php	0.648KB	Hapus Edit Rename
class-pop3.php	20.626KB	Hapus Edit Rename
class-simplepie.php	0.442KB	Hapus Edit Rename
class-smtp.php	0.446KB	Hapus Edit Rename
class-snoopy.php	36.831KB	Hapus Edit Rename
class-walker-category-dropdown.php	2.411KB	Hapus Edit Rename
class-walker-category.php	8.278KB	Hapus Edit Rename
class-walker-nav-menu.php	11.762KB	Hapus Edit Rename
class-walker-page-dropdown.php	2.646KB	Hapus Edit Rename
class-walker-page.php	7.434KB	Hapus Edit Rename
class-wp-admin-bar.php	17.455KB	Hapus Edit Rename
class-wp-ajax-response.php	5.143KB	Hapus Edit Rename
class-wp-application-passwords.php	16.698KB	Hapus Edit Rename
class-wp-block-bindings-registry.php	8.283KB	Hapus Edit Rename
class-wp-block-bindings-source.php	2.922KB	Hapus Edit Rename
class-wp-block-editor-context.php	1.318KB	Hapus Edit Rename
class-wp-block-list.php	4.603KB	Hapus Edit Rename
class-wp-block-metadata-registry.php	11.616KB	Hapus Edit Rename
class-wp-block-parser-block.php	2.495KB	Hapus Edit Rename
class-wp-block-parser-frame.php	1.97KB	Hapus Edit Rename
class-wp-block-parser.php	11.246KB	Hapus Edit Rename
class-wp-block-pattern-categories-registry.php	5.322KB	Hapus Edit Rename
class-wp-block-patterns-registry.php	10.989KB	Hapus Edit Rename
class-wp-block-processor.php	68.319KB	Hapus Edit Rename
class-wp-block-styles-registry.php	6.345KB	Hapus Edit Rename
class-wp-block-supports.php	5.494KB	Hapus Edit Rename
class-wp-block-template.php	1.985KB	Hapus Edit Rename
class-wp-block-templates-registry.php	7.024KB	Hapus Edit Rename
class-wp-block-type-registry.php	4.912KB	Hapus Edit Rename
class-wp-block-type.php	16.86KB	Hapus Edit Rename
class-wp-block.php	24.23KB	Hapus Edit Rename
class-wp-classic-to-block-menu-converter.php	3.975KB	Hapus Edit Rename
class-wp-comment-query.php	47.66KB	Hapus Edit Rename
class-wp-customize-control.php	25.507KB	Hapus Edit Rename
class-wp-customize-manager.php	198.378KB	Hapus Edit Rename
class-wp-customize-nav-menus.php	56.653KB	Hapus Edit Rename
class-wp-customize-panel.php	10.459KB	Hapus Edit Rename
class-wp-customize-section.php	10.946KB	Hapus Edit Rename
class-wp-customize-setting.php	29.26KB	Hapus Edit Rename
class-wp-customize-widgets.php	70.905KB	Hapus Edit Rename
class-wp-date-query.php	35.3KB	Hapus Edit Rename
class-wp-dependencies.php	16.605KB	Hapus Edit Rename
class-wp-dependency.php	2.571KB	Hapus Edit Rename
class-wp-editor.php	70.64KB	Hapus Edit Rename
class-wp-embed.php	15.558KB	Hapus Edit Rename
class-wp-error.php	7.326KB	Hapus Edit Rename
class-wp-exception.php	0.247KB	Hapus Edit Rename
class-wp-fatal-error-handler.php	7.959KB	Hapus Edit Rename
class-wp-feed-cache-transient.php	3.227KB	Hapus Edit Rename
class-wp-feed-cache.php	0.946KB	Hapus Edit Rename
class-wp-hook.php	16.283KB	Hapus Edit Rename
class-wp-http-cookie.php	7.216KB	Hapus Edit Rename
class-wp-http-curl.php	12.95KB	Hapus Edit Rename
class-wp-http-encoding.php	6.532KB	Hapus Edit Rename
class-wp-http-ixr-client.php	3.424KB	Hapus Edit Rename
class-wp-http-proxy.php	5.84KB	Hapus Edit Rename
class-wp-http-requests-hooks.php	1.975KB	Hapus Edit Rename
class-wp-http-requests-response.php	4.297KB	Hapus Edit Rename
class-wp-http-response.php	2.907KB	Hapus Edit Rename
class-wp-http-streams.php	16.464KB	Hapus Edit Rename
class-wp-image-editor-gd.php	20.22KB	Hapus Edit Rename
class-wp-image-editor-imagick.php	36.11KB	Hapus Edit Rename
class-wp-image-editor.php	17.007KB	Hapus Edit Rename
class-wp-list-util.php	7.269KB	Hapus Edit Rename
class-wp-locale-switcher.php	6.617KB	Hapus Edit Rename
class-wp-locale.php	16.487KB	Hapus Edit Rename
class-wp-matchesmapregex.php	1.785KB	Hapus Edit Rename
class-wp-meta-query.php	29.817KB	Hapus Edit Rename
class-wp-metadata-lazyloader.php	6.673KB	Hapus Edit Rename
class-wp-navigation-fallback.php	8.978KB	Hapus Edit Rename
class-wp-network-query.php	19.421KB	Hapus Edit Rename
class-wp-network.php	12.008KB	Hapus Edit Rename
class-wp-object-cache.php	17.113KB	Hapus Edit Rename
class-wp-oembed-controller.php	6.743KB	Hapus Edit Rename
class-wp-oembed.php	30.928KB	Hapus Edit Rename
class-wp-paused-extensions-storage.php	4.991KB	Hapus Edit Rename
class-wp-phpmailer.php	4.246KB	Hapus Edit Rename
class-wp-plugin-dependencies.php	24.722KB	Hapus Edit Rename
class-wp-post-type.php	29.961KB	Hapus Edit Rename
class-wp-post.php	6.339KB	Hapus Edit Rename
class-wp-recovery-mode-cookie-service.php	6.716KB	Hapus Edit Rename
class-wp-recovery-mode-email-service.php	10.921KB	Hapus Edit Rename
class-wp-recovery-mode-key-service.php	4.77KB	Hapus Edit Rename
class-wp-recovery-mode-link-service.php	3.382KB	Hapus Edit Rename
class-wp-recovery-mode.php	11.185KB	Hapus Edit Rename
class-wp-rewrite.php	62.194KB	Hapus Edit Rename
class-wp-role.php	2.464KB	Hapus Edit Rename
class-wp-script-modules.php	32.146KB	Hapus Edit Rename
class-wp-scripts.php	34.047KB	Hapus Edit Rename
class-wp-session-tokens.php	7.147KB	Hapus Edit Rename
class-wp-simplepie-file.php	3.469KB	Hapus Edit Rename
class-wp-simplepie-sanitize-kses.php	1.865KB	Hapus Edit Rename
class-wp-site-query.php	30.913KB	Hapus Edit Rename
class-wp-site.php	7.292KB	Hapus Edit Rename
class-wp-speculation-rules.php	7.351KB	Hapus Edit Rename
class-wp-styles.php	12.542KB	Hapus Edit Rename
class-wp-tax-query.php	19.118KB	Hapus Edit Rename
class-wp-taxonomy.php	18.124KB	Hapus Edit Rename
class-wp-term-query.php	39.993KB	Hapus Edit Rename
class-wp-term.php	5.174KB	Hapus Edit Rename
class-wp-text-diff-renderer-inline.php	0.956KB	Hapus Edit Rename
class-wp-text-diff-renderer-table.php	18.438KB	Hapus Edit Rename
class-wp-textdomain-registry.php	10.235KB	Hapus Edit Rename
class-wp-theme-json-data.php	1.767KB	Hapus Edit Rename
class-wp-theme-json-resolver.php	34.9KB	Hapus Edit Rename
class-wp-theme-json-schema.php	7.194KB	Hapus Edit Rename
class-wp-theme-json.php	160.495KB	Hapus Edit Rename
class-wp-theme.php	64.268KB	Hapus Edit Rename
class-wp-token-map.php	27.947KB	Hapus Edit Rename
class-wp-url-pattern-prefixer.php	4.689KB	Hapus Edit Rename
class-wp-user-meta-session-tokens.php	2.94KB	Hapus Edit Rename
class-wp-user-query.php	43.131KB	Hapus Edit Rename
class-wp-user-request.php	2.251KB	Hapus Edit Rename
class-wp-walker.php	13.01KB	Hapus Edit Rename
class-wp-widget-factory.php	3.269KB	Hapus Edit Rename
class-wp-xmlrpc-server.php	210.397KB	Hapus Edit Rename
class-wp.php	25.86KB	Hapus Edit Rename
class-wpdb.php	115.847KB	Hapus Edit Rename
class.wp-scripts.php	0.335KB	Hapus Edit Rename
class.wp-styles.php	0.33KB	Hapus Edit Rename
comment.php	130.927KB	Hapus Edit Rename
compat-utf8.php	19.096KB	Hapus Edit Rename
compat.php	17.412KB	Hapus Edit Rename
cron.php	41.98KB	Hapus Edit Rename
date.php	0.391KB	Hapus Edit Rename
default-filters.php	37.021KB	Hapus Edit Rename
default-widgets.php	2.241KB	Hapus Edit Rename
embed-template.php	0.33KB	Hapus Edit Rename
embed.php	37.999KB	Hapus Edit Rename
feed-atom-comments.php	5.375KB	Hapus Edit Rename
feed-atom.php	3.048KB	Hapus Edit Rename
feed-rdf.php	2.605KB	Hapus Edit Rename
feed-rss.php	1.161KB	Hapus Edit Rename
feed-rss2-comments.php	4.039KB	Hapus Edit Rename
feed-rss2.php	3.71KB	Hapus Edit Rename
feed.php	24.599KB	Hapus Edit Rename
fonts.php	9.561KB	Hapus Edit Rename
formatting.php	346.427KB	Hapus Edit Rename
functions.php	281.836KB	Hapus Edit Rename
functions.wp-scripts.php	14.952KB	Hapus Edit Rename
functions.wp-styles.php	8.438KB	Hapus Edit Rename
global-styles-and-settings.php	20.707KB	Hapus Edit Rename
http.php	25.271KB	Hapus Edit Rename
kses.php	81.731KB	Hapus Edit Rename
l10n.php	67.185KB	Hapus Edit Rename
link-template.php	156.364KB	Hapus Edit Rename
load.php	55.186KB	Hapus Edit Rename
locale.php	0.158KB	Hapus Edit Rename
media-template.php	61.716KB	Hapus Edit Rename
media.php	216.062KB	Hapus Edit Rename
meta.php	64.996KB	Hapus Edit Rename
ms-blogs.php	25.239KB	Hapus Edit Rename
ms-default-constants.php	4.806KB	Hapus Edit Rename
ms-default-filters.php	6.48KB	Hapus Edit Rename
ms-deprecated.php	21.249KB	Hapus Edit Rename
ms-functions.php	89.689KB	Hapus Edit Rename
ms-load.php	19.421KB	Hapus Edit Rename
ms-network.php	3.693KB	Hapus Edit Rename
ms-settings.php	4.105KB	Hapus Edit Rename
ms-site.php	40.739KB	Hapus Edit Rename
nav-menu-template.php	25.381KB	Hapus Edit Rename
nav-menu.php	43.308KB	Hapus Edit Rename
pluggable-deprecated.php	6.176KB	Hapus Edit Rename
plugin.php	35.646KB	Hapus Edit Rename
post-formats.php	6.936KB	Hapus Edit Rename
post-template.php	67.039KB	Hapus Edit Rename
post-thumbnail-template.php	10.624KB	Hapus Edit Rename
post.php	289.133KB	Hapus Edit Rename
query.php	36.226KB	Hapus Edit Rename
registration-functions.php	0.195KB	Hapus Edit Rename
registration.php	0.195KB	Hapus Edit Rename
rest-api.php	98.295KB	Hapus Edit Rename
revision.php	30.021KB	Hapus Edit Rename
rewrite.php	19.033KB	Hapus Edit Rename
robots-template.php	5.063KB	Hapus Edit Rename
rss-functions.php	0.249KB	Hapus Edit Rename
rss.php	22.659KB	Hapus Edit Rename
script-loader.php	154.633KB	Hapus Edit Rename
script-modules.php	9.679KB	Hapus Edit Rename
session.php	0.252KB	Hapus Edit Rename
sitemaps.php	3.162KB	Hapus Edit Rename
speculative-loading.php	8.398KB	Hapus Edit Rename
spl-autoload-compat.php	0.431KB	Hapus Edit Rename
style-engine.php	7.386KB	Hapus Edit Rename
taxonomy.php	172.908KB	Hapus Edit Rename
template-canvas.php	0.531KB	Hapus Edit Rename
theme-i18n.json	1.689KB	Hapus Edit Rename
theme-previews.php	2.842KB	Hapus Edit Rename
theme-templates.php	6.092KB	Hapus Edit Rename
theme.json	8.712KB	Hapus Edit Rename
theme.php	131.844KB	Hapus Edit Rename
update.php	37.454KB	Hapus Edit Rename
user.php	173.889KB	Hapus Edit Rename
utf8.php	7.09KB	Hapus Edit Rename
vars.php	6.408KB	Hapus Edit Rename
version.php	1.08KB	Hapus Edit Rename
widgets.php	69.462KB	Hapus Edit Rename
wp-db.php	0.435KB	Hapus Edit Rename