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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_Codec implements iJetpack_Sync_Codec { |
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const CODEC_NAME = 'deflate-json'; |
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const MAX_DEPTH = 10; |
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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( unserialize( 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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private function json_serialize( $any ) { |
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return json_encode( $this->json_wrap( $any ) ); |
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} |
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private function json_unserialize( $str ) { |
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return $this->json_unwrap( json_decode( $str ) ); |
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} |
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private function json_wrap( $any, $skip_assoc = false, $seen_nodes = array() ) { |
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if ( ! $skip_assoc && is_array( $any ) && is_string( key( $any ) ) ) { |
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return (object) array( '_PHP_ASSOC' => $this->json_wrap( $any, true ) ); |
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} |
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if ( is_array( $any ) || is_object( $any ) ) { |
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foreach ( $any as $k => &$v ) { |
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if ( ( is_array( $v ) || is_object( $v ) ) ) { |
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View Code Duplication |
if ( in_array( $v, $seen_nodes, true ) ) { |
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if ( is_object( $any ) ) { |
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unset( $any->{ $k } ); |
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} else { |
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unset( $any[ $k ] ); |
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} |
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continue; |
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} else { |
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$seen_nodes[] = $v; |
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} |
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} |
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$v = $this->json_wrap( $v, false, $seen_nodes ); |
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} |
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} |
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return $any; |
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} |
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private function json_unwrap( $any, $skip_assoc = false ) { |
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if ( ! $skip_assoc && is_object( $any ) && isset( $any->_PHP_ASSOC ) && count( (array) $any ) == 1 ) { |
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return (array) $this->json_unwrap( $any->_PHP_ASSOC ); |
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} |
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if ( is_array( $any ) || is_object( $any ) ) { |
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foreach ( $any as &$v ) { |
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$v = $this->json_unwrap( $v ); |
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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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Automattic /
jetpack
