86 lines
1.9 KiB
PHP
86 lines
1.9 KiB
PHP
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<?php
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require_once dirname( __FILE__ ) . '/interface.jetpack-sync-codec.php';
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/**
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* An implementation of iJetpack_Sync_Codec that uses gzip's DEFLATE
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* algorithm to compress objects serialized using json_encode
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*/
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class Jetpack_Sync_JSON_Deflate_Array_Codec implements iJetpack_Sync_Codec {
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const CODEC_NAME = "deflate-json-array";
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public function name() {
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return self::CODEC_NAME;
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}
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public function encode( $object ) {
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return base64_encode( gzdeflate( $this->json_serialize( $object ) ) );
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}
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public function decode( $input ) {
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return $this->json_unserialize( gzinflate( base64_decode( $input ) ) );
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}
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// @see https://gist.github.com/muhqu/820694
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protected function json_serialize( $any ) {
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if ( function_exists( 'jetpack_json_wrap' ) ) {
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return wp_json_encode( jetpack_json_wrap( $any ) );
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}
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// This prevents fatal error when updating pre 6.0 via the cli command
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return wp_json_encode( $this->json_wrap( $any ) );
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}
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protected function json_unserialize( $str ) {
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return $this->json_unwrap( json_decode( $str, true ) );
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}
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private function json_wrap( &$any, $seen_nodes = array() ) {
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if ( is_object( $any ) ) {
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$input = get_object_vars( $any );
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$input['__o'] = 1;
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} else {
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$input = &$any;
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}
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if ( is_array( $input ) ) {
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$seen_nodes[] = &$any;
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$return = array();
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foreach ( $input as $k => &$v ) {
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if ( ( is_array( $v ) || is_object( $v ) ) ) {
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if ( in_array( $v, $seen_nodes, true ) ) {
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continue;
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}
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$return[ $k ] = $this->json_wrap( $v, $seen_nodes );
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} else {
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$return[ $k ] = $v;
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}
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}
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return $return;
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}
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return $any;
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}
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private function json_unwrap( $any ) {
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if ( is_array( $any ) ) {
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foreach ( $any as $k => $v ) {
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if ( '__o' === $k ) {
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continue;
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}
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$any[ $k ] = $this->json_unwrap( $v );
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}
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if ( isset( $any['__o'] ) ) {
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unset( $any['__o'] );
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$any = (object) $any;
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}
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}
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return $any;
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}
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}
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