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<?php

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/**

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* Class that is responsible for all stats calculations.

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* @since 3.4.0

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* @package Smush\Core

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namespace Smush\Core;

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use Smush\Core\Media\Media_Item;

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use Smush\Core\Media\Media_Item_Query;

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use Smush\Core\Png2Jpg\Png2Jpg_Optimization;

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use Smush\Core\Resize\Resize_Optimization;

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use Smush\Core\Smush\Smush_Optimization;

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use Smush\Core\Smush\Smush_Optimization_Global_Stats;

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use Smush\Core\Stats\Global_Stats;

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use stdClass;

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use WP_Query;

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if ( ! defined( 'WPINC' ) ) {

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die;

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}

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/**

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* Class Stats

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class Stats {

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/**

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* Stores the stats for all the images.

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* @var array $stats

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public $stats;

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/**

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* Compressed attachments from selected directories.

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* @var array $dir_stats

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public $dir_stats;

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/**

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* Set a limit of MySQL query. Default: 3000.

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* @var int $query_limit

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private $query_limit;

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/**

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* Set a limit to max number of rows in MySQL query. Default: 5000.

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* @var int $max_rows

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private $max_rows;

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/**

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* Attachment IDs.

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* @var array $attachments

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public $attachments = array();

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/**

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* Image ids that needs to be resmushed.

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* @var array $resmush_ids

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public $resmush_ids = array();

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/**

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* Percentage of the smushed images.

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* @var float

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public $percent_optimized;

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/**

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* Percentage metric.

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* @var float

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public $percent_metric;

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/**

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* Class name of grade type.

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* @var string

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public $percent_grade;

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/**

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* Protected init class, used in child methods instead of constructor.

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* @since 3.4.0

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protected function init() {}

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/**

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* Stats constructor.

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public function __construct() {

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$this->init();

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$this->query_limit = apply_filters( 'wp_smush_query_limit', 3000 );

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$this->max_rows = apply_filters( 'wp_smush_max_rows', 5000 );

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// Recalculate resize savings.

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add_action(

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'wp_smush_image_resized',

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function() {

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return $this->get_savings( 'resize' );

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}

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);

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// Update Conversion savings.

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add_action(

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'wp_smush_png_jpg_converted',

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function() {

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return $this->get_savings( 'pngjpg' );

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}

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);

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// Update the media_attachments list.

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add_action( 'add_attachment', array( $this, 'add_to_media_attachments_list' ) );

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add_action( 'delete_attachment', array( $this, 'update_lists' ), 12 );

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}

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/**

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* Runs the expensive queries to get our global smush stats

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* @param bool $force_update Whether to force update the global stats or not.

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public function setup_global_stats( $force_update = false ) {

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if ( ! $this->mod->dir ) {

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$this->mod->dir = new Modules\Dir();

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}

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// Set directory smush status.

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$this->dir_stats = Modules\Dir::should_continue() ? $this->mod->dir->total_stats() : array();

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// Set Attachment IDs, and total count.

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$this->attachments = $this->get_media_attachments();

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// Set total count.

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$this->total_count = ! empty( $this->attachments ) && is_array( $this->attachments ) ? count( $this->attachments ) : 0;

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$this->stats = $this->global_stats( $force_update );

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if ( empty( $this->smushed_attachments ) ) {

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// Get smushed attachments.

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$this->smushed_attachments = $this->get_smushed_attachments( $force_update );

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}

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// Get super smushed images count.

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if ( ! $this->super_smushed ) {

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$this->super_smushed = count( $this->get_super_smushed_attachments() );

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}

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// Get skipped attachments.

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$this->skipped_attachments = $this->skipped_count( $force_update );

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$this->skipped_count = count( $this->skipped_attachments );

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// Set smushed count.

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$this->smushed_count = ! empty( $this->smushed_attachments ) ? count( $this->smushed_attachments ) : 0;

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$this->remaining_count = $this->remaining_count();

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list( $percent_optimized, $percent_metric, $grade ) = $this->get_grade_data(

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$this->remaining_count,

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$this->total_count,

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$this->skipped_count

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);

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$this->percent_grade = $grade;

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$this->percent_metric = $percent_metric;

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$this->percent_optimized = $percent_optimized;

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}

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/**

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* Get the savings from image resizing or PNG -> JPG conversion savings.

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* @param string $type Savings type. Accepts: resize, pngjpg.

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* @param bool $force_update Force update to re-calculate all stats. Default: false.

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* @param bool $format Format the bytes in readable format. Default: false.

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* @param bool $return_count Return the resized image count. Default: false.

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* @return int|array

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public function get_savings( $type, $force_update = true, $format = false, $return_count = false ) {

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$key = 'wp-smush-' . $type . '_savings';

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$key_count = 'wp-smush-resize_count';

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if ( ! $force_update ) {

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$savings = wp_cache_get( $key, 'wp-smush' );

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if ( ! $return_count && $savings ) {

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return $savings;

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}

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$count = wp_cache_get( $key_count, 'wp-smush' );

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if ( $return_count && false !== $count ) {

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return $count;

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}

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}

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// If savings or resize image count is not stored in db, recalculate.

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$count = 0;

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$offset = 0;

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$query_next = true;

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$savings = array(

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'resize' => array(

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'bytes' => 0,

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'size_before' => 0,

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'size_after' => 0,

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'pngjpg' => array(

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'bytes' => 0,

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'size_before' => 0,

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'size_after' => 0,

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);

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global $wpdb;

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while ( $query_next ) {

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$query_data = $wpdb->get_results(

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$wpdb->prepare(

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"SELECT post_id, meta_value FROM {$wpdb->postmeta} WHERE meta_key=%s LIMIT %d, %d",

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$key,

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$offset,

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$this->query_limit

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)

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); // Db call ok.

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// No results - break out of loop.

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if ( empty( $query_data ) ) {

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break;

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}

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foreach ( $query_data as $data ) {

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// Skip resmush IDs.

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if ( ! empty( $this->resmush_ids ) && in_array( $data->post_id, $this->resmush_ids, true ) ) {

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continue;

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}

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$count++;

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if ( empty( $data ) ) {

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continue;

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}

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$meta = maybe_unserialize( $data->meta_value );

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// Resize mete already contains all the stats.

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if ( ! empty( $meta ) && ! empty( $meta['bytes'] ) ) {

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$savings['resize']['bytes'] += $meta['bytes'];

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$savings['resize']['size_before'] += $meta['size_before'];

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$savings['resize']['size_after'] += $meta['size_after'];

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}

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// PNG - JPG conversion meta contains stats by attachment size.

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if ( is_array( $meta ) ) {

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foreach ( $meta as $size ) {

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$savings['pngjpg']['bytes'] += isset( $size['bytes'] ) ? $size['bytes'] : 0;

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$savings['pngjpg']['size_before'] += isset( $size['size_before'] ) ? $size['size_before'] : 0;

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$savings['pngjpg']['size_after'] += isset( $size['size_after'] ) ? $size['size_after'] : 0;

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}

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}

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}

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// Update the offset.

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$offset += $this->query_limit;

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// Compare the offset value to total images.

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$query_next = $this->total_count > $offset;

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}

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if ( $format ) {

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$savings[ $type ]['bytes'] = size_format( $savings[ $type ]['bytes'], 1 );

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}

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wp_cache_set( 'wp-smush-resize_savings', $savings['resize'], 'wp-smush' );

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wp_cache_set( 'wp-smush-pngjpg_savings', $savings['pngjpg'], 'wp-smush' );

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wp_cache_set( $key_count, $count, 'wp-smush' );

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return $return_count ? $count : $savings[ $type ];

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}

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/**

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* Get the media attachment IDs.

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* @param bool $force_update Force update.

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* @return array

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public function get_media_attachments( $force_update = false ) {

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// Return results from cache.

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if ( ! $force_update ) {

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$posts = wp_cache_get( 'media_attachments', 'wp-smush' );

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if ( $posts ) {

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return $posts;

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}

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}

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// Remove the Filters added by WP Media Folder.

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do_action( 'wp_smush_remove_filters' );

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global $wpdb;

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$posts = $wpdb->get_col(

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$wpdb->prepare(

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sprintf(

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'SELECT ID FROM `%s` WHERE post_type = "attachment" AND post_mime_type IN (%s)',

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$wpdb->posts,

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implode( ',', array_fill( 0, count( Core::$mime_types ), '%s' ) )

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Core::$mime_types

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)

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); // Db call ok.

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// Add the attachments to cache.

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wp_cache_set( 'media_attachments', $posts, 'wp-smush' );

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return $posts;

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}

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/**

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* Adds the ID of the smushed image to the media_attachments list.

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* @since 3.7.1

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* @param int $id Attachment's ID.

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public function add_to_media_attachments_list( $id ) {

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$posts = wp_cache_get( 'media_attachments', 'wp-smush' );

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// Return if there's no list to update.

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if ( ! $posts ) {

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return;

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}

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$mime_type = get_post_mime_type( $id );

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$id_string = (string) $id;

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// Add the ID if the mime type is allowed and the ID isn't in the list already.

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if ( $mime_type && in_array( $mime_type, Core::$mime_types, true ) && ! in_array( $id_string, $posts, true ) ) {

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$posts[] = $id_string;

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wp_cache_set( 'media_attachments', $posts, 'wp-smush' );

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}

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}

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/**

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* Updates the IDs lists when an attachment is deleted.

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* @since 3.7.2

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* @param integer $id Deleted attachment ID.

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public function update_lists( $id ) {

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$this->remove_from_media_attachments_list( $id );

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self::remove_from_smushed_list( $id );

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}

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/**

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* Removes the ID of the deleted image from the media_attachments list.

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* @since 3.7.1

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* @param int $id Attachment's ID.

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private function remove_from_media_attachments_list( $id ) {

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$posts = wp_cache_get( 'media_attachments', 'wp-smush' );

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// Return if there's no list to update.

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if ( ! $posts ) {

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return;

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}

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$index = array_search( (string) $id, $posts, true );

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if ( false !== $index ) {

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unset( $posts[ $index ] );

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wp_cache_set( 'media_attachments', $posts, 'wp-smush' );

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}

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}

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/**

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* Optimised image IDs.

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* @param bool $force_update Force update.

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* @return array

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public function get_smushed_attachments( $force_update = false ) {

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// Remove the Filters added by WP Media Folder.

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do_action( 'wp_smush_remove_filters' );

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global $wpdb;

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$posts = $wpdb->get_col(

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$wpdb->prepare(

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"SELECT DISTINCT post_id FROM {$wpdb->postmeta} WHERE meta_key=%s",

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Modules\Smush::$smushed_meta_key

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)

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);

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return $posts;

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}

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/**

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* Adds an ID to the smushed IDs list from the object cache.

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* @since 3.7.2

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* @param integer $attachment_id ID of the smushed attachment.

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public static function add_to_smushed_list( $attachment_id ) {

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$smushed_ids = wp_cache_get( 'wp-smush-smushed_ids', 'wp-smush' );

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if ( ! empty( $smushed_ids ) ) {

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$attachment_id = strval( $attachment_id );

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if ( ! in_array( $attachment_id, $smushed_ids, true ) ) {

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$smushed_ids[] = $attachment_id;

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// Set in cache.

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wp_cache_set( 'wp-smush-smushed_ids', $smushed_ids, 'wp-smush' );

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}

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}

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}

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/**

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* Removes an ID from the smushed IDs list from the object cache.

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* @since 3.7.2

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* @param integer $attachment_id ID of the smushed attachment.

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public static function remove_from_smushed_list( $attachment_id ) {

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$smushed_ids = wp_cache_get( 'wp-smush-smushed_ids', 'wp-smush' );

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if ( ! empty( $smushed_ids ) ) {

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$index = array_search( strval( $attachment_id ), $smushed_ids, true );

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if ( false !== $index ) {

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unset( $smushed_ids[ $index ] );

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wp_cache_set( 'wp-smush-smushed_ids', $smushed_ids, 'wp-smush' );

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}

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}

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}

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/**

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* Get all the attachments with wp-smush-lossy.

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* @return array

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public function get_super_smushed_attachments() {

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$meta_query = array(

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array(

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'key' => 'wp-smush-lossy',

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'value' => 1,

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);

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return $this->run_query( $meta_query );

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}

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/**

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* Fetch all the unsmushed attachments.

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* @return array

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public function get_unsmushed_attachments() {

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return $this->run_query( self::get_unsmushed_meta_query() );

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}

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/**

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* Temporary remove Smush metadata.

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* We use this in order to temporary remove the stats metadata,

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* e.g While generating thumbnail or wp_generate_ when disabled auto smush.

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* Note, if member's site allows compression of the original file,

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* when we remove stats, we might lose a large amount of storage (stats) that we saved for the member's site.

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* => TODO: Delete stats or just update new stats with re-smush?

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* @since 3.9.6

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* @param int $attachment_id Attachment ID.

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public function remove_stats( $attachment_id ) {

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// Main stats.

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delete_post_meta( $attachment_id, Modules\Smush::$smushed_meta_key );

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// Lossy flag.

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delete_post_meta( $attachment_id, 'wp-smush-lossy' );

[492] Fix | Delete

// Finally, remove the attachment ID from cache.

[493] Fix | Delete

self::remove_from_smushed_list( $attachment_id );

[494] Fix | Delete

}

[495] Fix | Delete

[496] Fix | Delete

/**

[497] Fix | Delete

* Get unsmushed meta query.

[498] Fix | Delete

[499] Fix | Delete

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