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<?php |
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namespace Knik\Binn\Encoder; |
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use Knik\Binn\Binn; |
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use Knik\Binn\Contracts\BinnValueEncoder; |
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class SimpleTypeValueEncoder implements BinnValueEncoder |
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{ |
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public function encode($value): string |
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{ |
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$type = $this->detectType($value); |
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return $this->encodeType($type) . $this->encodeValue($type, $value); |
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} |
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public function encodeValue(int $type, $value = null): ?string |
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{ |
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if ($type === Binn::BINN_NULL) { |
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return ''; |
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} |
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if ($type === Binn::BINN_TRUE) { |
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return ''; |
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} |
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if ($type === Binn::BINN_FALSE) { |
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return ''; |
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} |
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if ($type === Binn::BINN_UINT64) { |
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return Packer::packUint64($value); |
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} |
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if ($type === Binn::BINN_UINT32) { |
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return Packer::packUint32($value); |
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} |
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if ($type === Binn::BINN_UINT16) { |
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return Packer::packUint16($value); |
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} |
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if ($type === Binn::BINN_UINT8) { |
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return Packer::packUint8($value); |
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} |
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if ($type === Binn::BINN_INT8) { |
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return Packer::packInt8($value); |
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} |
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if ($type === Binn::BINN_INT16) { |
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return Packer::packInt16($value); |
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} |
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if ($type === Binn::BINN_INT32) { |
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return Packer::packInt32($value); |
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} |
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if ($type === Binn::BINN_INT64) { |
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return Packer::packInt64($value); |
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} |
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if ($type === Binn::BINN_FLOAT32) { |
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return Packer::packFloat32($value); |
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} |
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if ($type === Binn::BINN_FLOAT64) { |
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return Packer::packFloat64($value); |
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} |
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if ($type === Binn::BINN_STRING) { |
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return Packer::packSize(strlen($value)) . Packer::packString($value) . "\x00"; |
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} |
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return null; |
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} |
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public function supportsEncoding($value): bool |
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{ |
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return $this->detectType($value) !== null; |
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} |
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public function encodeType(int $type): ?string |
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{ |
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return $this->encodeValue(Binn::BINN_UINT8, $type); |
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} |
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private function detectType($value): ?int |
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{ |
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if (is_bool($value)) { |
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return $value ? Binn::BINN_TRUE : Binn::BINN_FALSE; |
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} |
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if (is_string($value)) { |
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return Binn::BINN_STRING; |
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} |
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if (is_int($value)) { |
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return $this->detectInt($value); |
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} |
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if (is_float($value)) { |
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if (strlen($value) > 4) { |
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return Binn::BINN_FLOAT64; |
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} |
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return Binn::BINN_FLOAT32; |
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} |
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if (is_null($value)) { |
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return Binn::BINN_NULL; |
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} |
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return null; |
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} |
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public function detectInt($value): int |
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{ |
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if ($value < 0) { |
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// int |
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if ($value >= Binn::INT8_MIN) { |
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return Binn::BINN_INT8; |
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} |
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if ($value >= Binn::INT16_MIN) { |
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return Binn::BINN_INT16; |
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} |
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if ($value >= Binn::INT32_MIN) { |
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return Binn::BINN_INT32; |
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} |
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return Binn::BINN_INT64; |
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} |
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// uint |
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if ($value <= Binn::UINT8_MAX) { |
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return Binn::BINN_UINT8; |
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} |
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if ($value <= Binn::UINT16_MAX) { |
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return Binn::BINN_UINT16; |
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} |
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if ($value <= Binn::UINT32_MAX) { |
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return Binn::BINN_UINT32; |
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} |
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return Binn::BINN_UINT64; |
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} |
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} |
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et-nik /
binn-php
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