701 lines
22 KiB
PHP
701 lines
22 KiB
PHP
<?php
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/**
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* Regenerate Thumbnails: Attachment regenerator class
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*
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* @package RegenerateThumbnails
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* @since 3.0.0
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*/
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/**
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* Regenerates the thumbnails for a given attachment.
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*
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* @since 3.0.0
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*/
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class RegenerateThumbnails_Regenerator {
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/**
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* The WP_Post object for the attachment that is being operated on.
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*
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* @since 3.0.0
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*
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* @var WP_Post
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*/
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public $attachment;
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/**
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* The full path to the original image so that it can be passed between methods.
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*
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* @since 3.0.0
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*
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* @var string
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*/
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public $fullsizepath;
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/**
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* An array of thumbnail size(s) that were skipped during regeneration due to already existing.
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* A class variable is used so that the data can later be used to merge the size(s) back in.
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*
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* @since 3.0.0
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*
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* @var array
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*/
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public $skipped_thumbnails = array();
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/**
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* Generates an instance of this class after doing some setup.
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*
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* MIME type is purposefully not validated in order to be more future proof and
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* to avoid duplicating a ton of logic that already exists in WordPress core.
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*
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* @since 3.0.0
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*
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* @param int $attachment_id Attachment ID to process.
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*
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* @return RegenerateThumbnails_Regenerator|WP_Error A new instance of RegenerateThumbnails_Regenerator on success, or WP_Error on error.
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*/
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public static function get_instance( $attachment_id ) {
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$attachment = get_post( $attachment_id );
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if ( ! $attachment ) {
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return new WP_Error(
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'regenerate_thumbnails_regenerator_attachment_doesnt_exist',
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__( 'No attachment exists with that ID.', 'regenerate-thumbnails' ),
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array(
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'status' => 404,
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)
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);
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}
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// We can only regenerate thumbnails for attachments.
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if ( 'attachment' !== get_post_type( $attachment ) ) {
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return new WP_Error(
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'regenerate_thumbnails_regenerator_not_attachment',
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__( 'This item is not an attachment.', 'regenerate-thumbnails' ),
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array(
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'status' => 400,
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)
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);
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}
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// Don't touch any attachments that are being used as a site icon. Their thumbnails are usually custom cropped.
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if ( self::is_site_icon( $attachment ) ) {
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return new WP_Error(
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'regenerate_thumbnails_regenerator_is_site_icon',
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__( "This attachment is a site icon and therefore the thumbnails shouldn't be touched.", 'regenerate-thumbnails' ),
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array(
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'status' => 415,
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'attachment' => $attachment,
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)
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);
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}
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return new RegenerateThumbnails_Regenerator( $attachment );
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}
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/**
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* The constructor for this class. Don't call this directly, see get_instance() instead.
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* This is done so that WP_Error objects can be returned during class initiation.
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*
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* @since 3.0.0
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*
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* @param WP_Post $attachment The WP_Post object for the attachment that is being operated on.
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*/
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private function __construct( WP_Post $attachment ) {
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$this->attachment = $attachment;
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}
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/**
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* Returns whether the attachment is or was a site icon.
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*
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* @since 3.0.0
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*
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* @param WP_Post $attachment The WP_Post object for the attachment that is being operated on.
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*
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* @return bool Whether the attachment is or was a site icon.
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*/
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public static function is_site_icon( WP_Post $attachment ) {
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return ( 'site-icon' === get_post_meta( $attachment->ID, '_wp_attachment_context', true ) );
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}
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/**
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* Get the path to the fullsize attachment.
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*
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* @return string|WP_Error The path to the fullsize attachment, or a WP_Error object on error.
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*/
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public function get_fullsizepath() {
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if ( $this->fullsizepath ) {
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return $this->fullsizepath;
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}
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if ( function_exists( 'wp_get_original_image_path' ) ) {
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$this->fullsizepath = wp_get_original_image_path( $this->attachment->ID );
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} else {
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$this->fullsizepath = get_attached_file( $this->attachment->ID );
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}
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if ( false === $this->fullsizepath || ! file_exists( $this->fullsizepath ) ) {
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$error = new WP_Error(
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'regenerate_thumbnails_regenerator_file_not_found',
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sprintf(
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/* translators: The relative upload path to the attachment. */
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__( "The fullsize image file cannot be found in your uploads directory at <code>%s</code>. Without it, new thumbnail images can't be generated.", 'regenerate-thumbnails' ),
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_wp_relative_upload_path( $this->fullsizepath )
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),
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array(
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'status' => 404,
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'fullsizepath' => _wp_relative_upload_path( $this->fullsizepath ),
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'attachment' => $this->attachment,
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)
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);
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$this->fullsizepath = $error;
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}
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return $this->fullsizepath;
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}
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/**
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* Regenerate the thumbnails for this instance's attachment.
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*
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* @since 3.0.0
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*
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* @param array|string $args {
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* Optional. Array or string of arguments for thumbnail regeneration.
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*
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* @type bool $only_regenerate_missing_thumbnails Skip regenerating existing thumbnail files. Default true.
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* @type bool $delete_unregistered_thumbnail_files Delete any thumbnail sizes that are no longer registered. Default false.
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* }
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*
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* @return mixed|WP_Error Metadata for attachment (see wp_generate_attachment_metadata()), or WP_Error on error.
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*/
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public function regenerate( $args = array() ) {
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global $wpdb;
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$args = wp_parse_args( $args, array(
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'only_regenerate_missing_thumbnails' => true,
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'delete_unregistered_thumbnail_files' => false,
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) );
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$fullsizepath = $this->get_fullsizepath();
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if ( is_wp_error( $fullsizepath ) ) {
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$fullsizepath->add_data( array( 'attachment' => $this->attachment ) );
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return $fullsizepath;
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}
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$old_metadata = wp_get_attachment_metadata( $this->attachment->ID );
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if ( $args['only_regenerate_missing_thumbnails'] ) {
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add_filter( 'intermediate_image_sizes_advanced', array( $this, 'filter_image_sizes_to_only_missing_thumbnails' ), 10, 2 );
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}
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require_once( ABSPATH . 'wp-admin/includes/admin.php' );
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$new_metadata = wp_generate_attachment_metadata( $this->attachment->ID, $fullsizepath );
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if ( $args['only_regenerate_missing_thumbnails'] ) {
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// Thumbnail sizes that existed were removed and need to be added back to the metadata.
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foreach ( $this->skipped_thumbnails as $skipped_thumbnail ) {
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if ( ! empty( $old_metadata['sizes'][ $skipped_thumbnail ] ) ) {
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$new_metadata['sizes'][ $skipped_thumbnail ] = $old_metadata['sizes'][ $skipped_thumbnail ];
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}
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}
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$this->skipped_thumbnails = array();
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remove_filter( 'intermediate_image_sizes_advanced', array( $this, 'filter_image_sizes_to_only_missing_thumbnails' ), 10 );
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}
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$wp_upload_dir = dirname( $fullsizepath ) . DIRECTORY_SEPARATOR;
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if ( $args['delete_unregistered_thumbnail_files'] ) {
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// Delete old sizes that are still in the metadata.
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$intermediate_image_sizes = get_intermediate_image_sizes();
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foreach ( $old_metadata['sizes'] as $old_size => $old_size_data ) {
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if ( in_array( $old_size, $intermediate_image_sizes ) ) {
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continue;
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}
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wp_delete_file( $wp_upload_dir . $old_size_data['file'] );
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unset( $new_metadata['sizes'][ $old_size ] );
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}
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$relative_path = dirname( $new_metadata['file'] ) . DIRECTORY_SEPARATOR;
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// It's possible to upload an image with a filename like image-123x456.jpg and it shouldn't be deleted.
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$whitelist = $wpdb->get_col( $wpdb->prepare( "
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SELECT
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meta_value
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FROM
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{$wpdb->postmeta}
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WHERE
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meta_key = '_wp_attached_file'
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AND meta_value REGEXP %s
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/* Regenerate Thumbnails */
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",
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'^' . preg_quote( $relative_path ) . '[^' . preg_quote( DIRECTORY_SEPARATOR ) . ']+-[0-9]+x[0-9]+\.'
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) );
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$whitelist = array_map( 'basename', $whitelist );
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$filelist = array();
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foreach ( scandir( $wp_upload_dir ) as $file ) {
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if ( '.' == $file || '..' == $file || ! is_file( $wp_upload_dir . $file ) ) {
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continue;
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}
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$filelist[] = $file;
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}
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$registered_thumbnails = array();
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foreach ( $new_metadata['sizes'] as $size ) {
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$registered_thumbnails[] = $size['file'];
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}
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$fullsize_parts = pathinfo( $fullsizepath );
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foreach ( $filelist as $file ) {
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if ( in_array( $file, $whitelist ) || in_array( $file, $registered_thumbnails ) ) {
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continue;
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}
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if ( ! preg_match( '#^' . preg_quote( $fullsize_parts['filename'], '#' ) . '-[0-9]+x[0-9]+\.' . preg_quote( $fullsize_parts['extension'], '#' ) . '$#', $file ) ) {
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continue;
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}
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wp_delete_file( $wp_upload_dir . $file );
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}
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} elseif ( ! empty( $old_metadata ) && ! empty( $old_metadata['sizes'] ) && is_array( $old_metadata['sizes'] ) ) {
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// If not deleting, rename any size conflicts to avoid them being lost if the file still exists.
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foreach ( $old_metadata['sizes'] as $old_size => $old_size_data ) {
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if ( empty( $new_metadata['sizes'][ $old_size ] ) ) {
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$new_metadata['sizes'][ $old_size ] = $old_metadata['sizes'][ $old_size ];
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continue;
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}
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$new_size_data = $new_metadata['sizes'][ $old_size ];
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if (
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$new_size_data['width'] !== $old_size_data['width']
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&& $new_size_data['height'] !== $old_size_data['height']
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&& file_exists( $wp_upload_dir . $old_size_data['file'] )
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) {
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$new_metadata['sizes'][ $old_size . '_old_' . $old_size_data['width'] . 'x' . $old_size_data['height'] ] = $old_size_data;
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}
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}
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}
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wp_update_attachment_metadata( $this->attachment->ID, $new_metadata );
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return $new_metadata;
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}
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/**
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* Filters the list of thumbnail sizes to only include those which have missing files.
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*
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* @since 3.0.0
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*
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* @param array $sizes An associative array of registered thumbnail image sizes.
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* @param array $fullsize_metadata An associative array of fullsize image metadata: width, height, file.
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*
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* @return array An associative array of image sizes.
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*/
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public function filter_image_sizes_to_only_missing_thumbnails( $sizes, $fullsize_metadata ) {
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if ( ! $sizes ) {
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return $sizes;
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}
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$fullsizepath = $this->get_fullsizepath();
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if ( is_wp_error( $fullsizepath ) ) {
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return $sizes;
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}
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$editor = wp_get_image_editor( $fullsizepath );
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if ( is_wp_error( $editor ) ) {
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return $sizes;
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}
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$metadata = wp_get_attachment_metadata( $this->attachment->ID );
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// This is based on WP_Image_Editor_GD::multi_resize() and others.
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foreach ( $sizes as $size => $size_data ) {
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if ( empty( $metadata['sizes'][ $size ] ) ) {
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continue;
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}
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if ( ! isset( $size_data['width'] ) && ! isset( $size_data['height'] ) ) {
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continue;
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}
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if ( ! isset( $size_data['width'] ) ) {
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$size_data['width'] = null;
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}
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if ( ! isset( $size_data['height'] ) ) {
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$size_data['height'] = null;
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}
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if ( ! isset( $size_data['crop'] ) ) {
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$size_data['crop'] = false;
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}
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$thumbnail = $this->get_thumbnail(
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$editor,
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$fullsize_metadata['width'],
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$fullsize_metadata['height'],
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$size_data['width'],
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$size_data['height'],
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$size_data['crop']
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);
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// The false check filters out thumbnails that would be larger than the fullsize image.
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// The size comparison makes sure that the size is also correct.
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if (
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false === $thumbnail
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|| (
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$thumbnail['width'] === $metadata['sizes'][ $size ]['width']
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&& $thumbnail['height'] === $metadata['sizes'][ $size ]['height']
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&& file_exists( $thumbnail['filename'] )
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)
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) {
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$this->skipped_thumbnails[] = $size;
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unset( $sizes[ $size ] );
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}
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}
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/**
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* Filters the list of missing thumbnail sizes if you want to add/remove any.
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*
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* @since 3.1.0
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*
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* @param array $sizes An associative array of image sizes that are missing.
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* @param array $fullsize_metadata An associative array of fullsize image metadata: width, height, file.
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* @param object $this The current instance of this class.
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*
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* @return array An associative array of image sizes.
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*/
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return apply_filters( 'regenerate_thumbnails_missing_thumbnails', $sizes, $fullsize_metadata, $this );
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}
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/**
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* Generate the thumbnail filename and dimensions for a given set of constraint dimensions.
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*
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* @since 3.0.0
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*
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* @param WP_Image_Editor|WP_Error $editor An instance of WP_Image_Editor, as returned by wp_get_image_editor().
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* @param int $fullsize_width The width of the fullsize image.
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* @param int $fullsize_height The height of the fullsize image.
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* @param int $thumbnail_width The width of the thumbnail.
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* @param int $thumbnail_height The height of the thumbnail.
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* @param bool $crop Whether to crop or not.
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*
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* @return array|false An array of the filename, thumbnail width, and thumbnail height,
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* or false on failure to resize such as the thumbnail being larger than the fullsize image.
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*/
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public function get_thumbnail( $editor, $fullsize_width, $fullsize_height, $thumbnail_width, $thumbnail_height, $crop ) {
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$dims = image_resize_dimensions( $fullsize_width, $fullsize_height, $thumbnail_width, $thumbnail_height, $crop );
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if ( ! $dims ) {
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return false;
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}
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list( , , , , $dst_w, $dst_h ) = $dims;
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$suffix = "{$dst_w}x{$dst_h}";
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$file_ext = strtolower( pathinfo( $this->get_fullsizepath(), PATHINFO_EXTENSION ) );
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return array(
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'filename' => $editor->generate_filename( $suffix, null, $file_ext ),
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'width' => $dst_w,
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'height' => $dst_h,
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);
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}
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/**
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* Update the post content of any public post types (posts and pages by default)
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* that make use of this attachment.
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*
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* @since 3.0.0
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*
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* @param array|string $args {
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* Optional. Array or string of arguments for controlling the updating.
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*
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* @type array $post_type The post types to update. Defaults to public post types (posts and pages by default).
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* @type array $post_ids Specific post IDs to update as opposed to any that uses the attachment.
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* @type int $posts_per_loop How many posts to query at a time to keep memory usage down. You shouldn't need to modify this.
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* }
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*
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* @return array|WP_Error List of post IDs that were modified. The key is the post ID and the value is either the post ID again or a WP_Error object if wp_update_post() failed.
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*/
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public function update_usages_in_posts( $args = array() ) {
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// Temporarily disabled until it can be even better tested for edge cases
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return array();
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$args = wp_parse_args( $args, array(
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'post_type' => array(),
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'post_ids' => array(),
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'posts_per_loop' => 10,
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) );
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if ( empty( $args['post_type'] ) ) {
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$args['post_type'] = array_values( get_post_types( array( 'public' => true ) ) );
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unset( $args['post_type']['attachment'] );
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}
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$offset = 0;
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$posts_updated = array();
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while ( true ) {
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$posts = get_posts( array(
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'numberposts' => $args['posts_per_loop'],
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'offset' => $offset,
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'orderby' => 'ID',
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'order' => 'ASC',
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'include' => $args['post_ids'],
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'post_type' => $args['post_type'],
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's' => 'wp-image-' . $this->attachment->ID,
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// For faster queries.
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'update_post_meta_cache' => false,
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'update_post_term_cache' => false,
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) );
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if ( ! $posts ) {
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break;
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}
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$offset += $args['posts_per_loop'];
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foreach ( $posts as $post ) {
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$content = $post->post_content;
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$search = array();
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$replace = array();
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// Find all <img> tags for this attachment and update them.
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preg_match_all(
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'#<img [^>]+wp-image-' . $this->attachment->ID . '[^>]+/>#i',
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$content,
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$matches,
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PREG_SET_ORDER
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);
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if ( $matches ) {
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foreach ( $matches as $img_tag ) {
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preg_match( '# class="([^"]+)?size-([^" ]+)#i', $img_tag[0], $thumbnail_size );
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if ( $thumbnail_size ) {
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$thumbnail = image_downsize( $this->attachment->ID, $thumbnail_size[2] );
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if ( ! $thumbnail ) {
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continue;
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}
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|
$search[] = $img_tag[0];
|
|
|
|
$img_tag[0] = preg_replace( '# src="[^"]+"#i', ' src="' . esc_url( $thumbnail[0] ) . '"', $img_tag[0] );
|
|
$img_tag[0] = preg_replace(
|
|
'# width="[^"]+" height="[^"]+"#i',
|
|
' width="' . esc_attr( $thumbnail[1] ) . '" height="' . esc_attr( $thumbnail[2] ) . '"',
|
|
$img_tag[0]
|
|
);
|
|
|
|
$replace[] = $img_tag[0];
|
|
}
|
|
}
|
|
}
|
|
$content = str_replace( $search, $replace, $content );
|
|
$search = array();
|
|
$replace = array();
|
|
|
|
// Update the width in any [caption] shortcodes.
|
|
preg_match_all(
|
|
'#\[caption id="attachment_' . $this->attachment->ID . '"([^\]]+)? width="[^"]+"\]([^\[]+)size-([^" ]+)([^\[]+)\[\/caption\]#i',
|
|
$content,
|
|
$matches,
|
|
PREG_SET_ORDER
|
|
);
|
|
if ( $matches ) {
|
|
foreach ( $matches as $match ) {
|
|
$thumbnail = image_downsize( $this->attachment->ID, $match[3] );
|
|
|
|
if ( ! $thumbnail ) {
|
|
continue;
|
|
}
|
|
|
|
$search[] = $match[0];
|
|
$replace[] = '[caption id="attachment_' . $this->attachment->ID . '"' . $match[1] . ' width="' . esc_attr( $thumbnail[1] ) . '"]' . $match[2] . 'size-' . $match[3] . $match[4] . '[/caption]';
|
|
}
|
|
}
|
|
$content = str_replace( $search, $replace, $content );
|
|
|
|
$updated_post_object = (object) array(
|
|
'ID' => $post->ID,
|
|
'post_content' => $content,
|
|
);
|
|
|
|
$posts_updated[ $post->ID ] = wp_update_post( $updated_post_object, true );
|
|
}
|
|
}
|
|
|
|
return $posts_updated;
|
|
}
|
|
|
|
/**
|
|
* Returns information about the current attachment for use in the REST API.
|
|
*
|
|
* @since 3.0.0
|
|
*
|
|
* @return array|WP_Error The attachment name, fullsize URL, registered thumbnail size status, and any unregistered sizes, or WP_Error on error.
|
|
*/
|
|
public function get_attachment_info() {
|
|
$fullsizepath = $this->get_fullsizepath();
|
|
if ( is_wp_error( $fullsizepath ) ) {
|
|
$fullsizepath->add_data( array( 'attachment' => $this->attachment ) );
|
|
|
|
return $fullsizepath;
|
|
}
|
|
|
|
$editor = wp_get_image_editor( $fullsizepath );
|
|
if ( is_wp_error( $editor ) ) {
|
|
// Display a more helpful error message.
|
|
if ( 'image_no_editor' === $editor->get_error_code() ) {
|
|
$editor = new WP_Error( 'image_no_editor', __( 'The current image editor cannot process this file type.', 'regenerate-thumbnails' ) );
|
|
}
|
|
|
|
$editor->add_data( array(
|
|
'attachment' => $this->attachment,
|
|
'status' => 415,
|
|
) );
|
|
|
|
return $editor;
|
|
}
|
|
|
|
$metadata = wp_get_attachment_metadata( $this->attachment->ID );
|
|
|
|
if ( false === $metadata || ! is_array( $metadata ) ) {
|
|
return new WP_Error(
|
|
'regenerate_thumbnails_regenerator_no_metadata',
|
|
__( 'Unable to load the metadata for this attachment.', 'regenerate-thumbnails' ),
|
|
array(
|
|
'status' => 404,
|
|
'attachment' => $this->attachment,
|
|
)
|
|
);
|
|
}
|
|
|
|
if ( ! isset( $metadata['sizes'] ) ) {
|
|
$metadata['sizes'] = array();
|
|
}
|
|
|
|
// PDFs don't have width/height set.
|
|
$width = ( isset( $metadata['width'] ) ) ? $metadata['width'] : null;
|
|
$height = ( isset( $metadata['height'] ) ) ? $metadata['height'] : null;
|
|
|
|
require_once( ABSPATH . '/wp-admin/includes/image.php' );
|
|
|
|
$preview = false;
|
|
if ( file_is_displayable_image( $fullsizepath ) ) {
|
|
$preview = wp_get_attachment_url( $this->attachment->ID );
|
|
} elseif (
|
|
is_array( $metadata['sizes'] ) &&
|
|
is_array( $metadata['sizes']['full'] ) &&
|
|
! empty( $metadata['sizes']['full']['file'] )
|
|
) {
|
|
$preview = str_replace(
|
|
wp_basename( $fullsizepath ),
|
|
$metadata['sizes']['full']['file'],
|
|
wp_get_attachment_url( $this->attachment->ID )
|
|
);
|
|
|
|
if ( ! file_exists( $preview ) ) {
|
|
$preview = false;
|
|
}
|
|
}
|
|
|
|
$response = array(
|
|
'name' => ( $this->attachment->post_title ) ? $this->attachment->post_title : sprintf( __( 'Attachment %d', 'regenerate-thumbnails' ), $this->attachment->ID ),
|
|
'preview' => $preview,
|
|
'relative_path' => _wp_get_attachment_relative_path( $fullsizepath ) . DIRECTORY_SEPARATOR . wp_basename( $fullsizepath ),
|
|
'edit_url' => get_edit_post_link( $this->attachment->ID, 'raw' ),
|
|
'width' => $width,
|
|
'height' => $height,
|
|
'registered_sizes' => array(),
|
|
'unregistered_sizes' => array(),
|
|
);
|
|
|
|
$wp_upload_dir = dirname( $fullsizepath ) . DIRECTORY_SEPARATOR;
|
|
|
|
$registered_sizes = RegenerateThumbnails()->get_thumbnail_sizes();
|
|
|
|
if ( 'application/pdf' === get_post_mime_type( $this->attachment ) ) {
|
|
$registered_sizes = array_intersect_key(
|
|
$registered_sizes,
|
|
array(
|
|
'thumbnail' => true,
|
|
'medium' => true,
|
|
'large' => true,
|
|
)
|
|
);
|
|
}
|
|
|
|
// Check the status of all currently registered sizes.
|
|
foreach ( $registered_sizes as $size ) {
|
|
// Width and height are needed to generate the thumbnail filename.
|
|
if ( $width && $height ) {
|
|
$thumbnail = $this->get_thumbnail( $editor, $width, $height, $size['width'], $size['height'], $size['crop'] );
|
|
|
|
if ( $thumbnail ) {
|
|
$size['filename'] = wp_basename( $thumbnail['filename'] );
|
|
$size['fileexists'] = file_exists( $thumbnail['filename'] );
|
|
} else {
|
|
$size['filename'] = false;
|
|
$size['fileexists'] = false;
|
|
}
|
|
} elseif ( ! empty( $metadata['sizes'][ $size['label'] ]['file'] ) ) {
|
|
$size['filename'] = wp_basename( $metadata['sizes'][ $size['label'] ]['file'] );
|
|
$size['fileexists'] = file_exists( $wp_upload_dir . $metadata['sizes'][ $size['label'] ]['file'] );
|
|
} else {
|
|
$size['filename'] = false;
|
|
$size['fileexists'] = false;
|
|
}
|
|
|
|
$response['registered_sizes'][] = $size;
|
|
}
|
|
|
|
if ( ! $width && ! $height && is_array( $metadata['sizes']['full'] ) ) {
|
|
$response['registered_sizes'][] = array(
|
|
'label' => 'full',
|
|
'width' => $metadata['sizes']['full']['width'],
|
|
'height' => $metadata['sizes']['full']['height'],
|
|
'filename' => $metadata['sizes']['full']['file'],
|
|
'fileexists' => file_exists( $wp_upload_dir . $metadata['sizes']['full']['file'] ),
|
|
);
|
|
}
|
|
|
|
// Look at the attachment metadata and see if we have any extra files from sizes that are no longer registered.
|
|
foreach ( $metadata['sizes'] as $label => $size ) {
|
|
if ( ! file_exists( $wp_upload_dir . $size['file'] ) ) {
|
|
continue;
|
|
}
|
|
|
|
// An unregistered size could match a registered size's dimensions. Ignore these.
|
|
foreach ( $response['registered_sizes'] as $registered_size ) {
|
|
if ( $size['file'] === $registered_size['filename'] ) {
|
|
continue 2;
|
|
}
|
|
}
|
|
|
|
if ( ! empty( $registered_sizes[ $label ] ) ) {
|
|
/* translators: Used for listing old sizes of currently registered thumbnails */
|
|
$label = sprintf( __( '%s (old)', 'regenerate-thumbnails' ), $label );
|
|
}
|
|
|
|
$response['unregistered_sizes'][] = array(
|
|
'label' => $label,
|
|
'width' => $size['width'],
|
|
'height' => $size['height'],
|
|
'filename' => $size['file'],
|
|
'fileexists' => true,
|
|
);
|
|
}
|
|
|
|
return $response;
|
|
}
|
|
}
|