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<?php |
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namespace Knik\Binn\Decoder; |
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use Knik\Binn\Binn; |
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use Knik\Binn\Contracts\BinnValueDecoder; |
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class SimpleStorageValueDecoder extends Decoder implements BinnValueDecoder |
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{ |
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public function decode(string $bytes) |
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{ |
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$type = $this->detectType($bytes); |
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switch ($type) { |
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case Binn::BINN_NULL: |
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return null; |
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case Binn::BINN_TRUE: |
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return true; |
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case Binn::BINN_FALSE: |
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return false; |
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case Binn::BINN_FLOAT32: |
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return Unpacker::unpackFloat32( |
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substr($bytes, 1, 4) |
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); |
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case Binn::BINN_FLOAT64: |
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return Unpacker::unpackFloat64( |
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substr($bytes, 1, 8) |
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); |
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case Binn::BINN_INT64: |
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return Unpacker::unpackInt64( |
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substr($bytes, 1, 8) |
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); |
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case Binn::BINN_INT32: |
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return Unpacker::unpackInt32( |
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substr($bytes, 1, 4) |
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); |
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case Binn::BINN_INT16: |
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return Unpacker::unpackInt16( |
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substr($bytes, 1, 2) |
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); |
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case Binn::BINN_INT8: |
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return Unpacker::unpackInt8( |
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$bytes[1] |
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); |
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case Binn::BINN_UINT64: |
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return Unpacker::unpackUint64( |
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substr($bytes, 1, 8) |
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); |
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case Binn::BINN_UINT32: |
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return Unpacker::unpackUint32( |
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substr($bytes, 1, 4) |
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); |
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case Binn::BINN_UINT16: |
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return Unpacker::unpackUint16( |
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substr($bytes, 1, 2) |
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); |
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case Binn::BINN_UINT8: |
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return Unpacker::unpackUint8($bytes[1]); |
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case Binn::BINN_STRING: |
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return $this->decodeString($bytes); |
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case Binn::BINN_STORAGE_BLOB: |
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return $this->decodeString($bytes); |
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} |
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return null; |
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} |
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public function supportsDecoding(string $bytes): bool |
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{ |
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$type = $this->detectType($bytes); |
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return in_array($type, [ |
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Binn::BINN_NULL, |
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Binn::BINN_TRUE, |
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Binn::BINN_FALSE, |
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Binn::BINN_FLOAT32, |
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Binn::BINN_FLOAT64, |
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Binn::BINN_INT64, |
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Binn::BINN_INT32, |
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Binn::BINN_INT16, |
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Binn::BINN_INT8, |
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Binn::BINN_UINT64, |
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Binn::BINN_UINT32, |
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Binn::BINN_UINT16, |
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Binn::BINN_UINT8, |
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Binn::BINN_STRING, |
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Binn::BINN_STORAGE_BLOB, |
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], true); |
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} |
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private function decodeString(string $bytes): string |
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{ |
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$size = Unpacker::unpackSize8($bytes[1]); |
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$offset = 2; |
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if ($size > Binn::BINN_MAX_ONE_BYTE_SIZE) { |
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$sizeBytes = substr($bytes, 1, 4); |
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$size = Unpacker::unpackSize32($sizeBytes); |
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$offset = 5; |
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} |
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$stringBytes = substr($bytes, $offset, $size); |
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return Unpacker::unpackString($stringBytes); |
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} |
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} |
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et-nik /
binn-php
