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<?php |
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/** |
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* Copyright (c) 2020 UMI |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in all |
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* copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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declare(strict_types=1); |
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namespace UmiTop\UmiCore\Util; |
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use Exception; |
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/** |
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* Trait ConverterTrait |
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* @package UmiTop\UmiCore\Util |
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*/ |
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trait ConverterTrait |
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{ |
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/** |
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* Преобразует версию адреса в префикс. |
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* @param int $version Версия адреса. |
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* @return string |
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* @throws Exception |
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*/ |
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private function versionToPrefix(int $version): string |
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{ |
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if ($version === 0) { |
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return 'genesis'; |
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} |
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$ch1 = $version >> 10 & 0x1F; |
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$ch2 = $version >> 5 & 0x1F; |
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$ch3 = $version & 0x1F; |
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$this->checkPrefixChars([$ch1, $ch2, $ch3]); |
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return chr($ch1 + 96) . chr($ch2 + 96) . chr($ch3 + 96); |
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} |
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/** |
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* Преобразует бинарное представление версии в префикс. |
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* @param string $bytes Версия в бинарном виде, длина 2 байта. |
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* @return string |
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* @throws Exception |
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*/ |
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private function bytesToPrefix(string $bytes): string |
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{ |
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return $this->versionToPrefix($this->bytesToUint16($bytes)); |
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} |
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/** |
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* Преобразует префикс в версию. |
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* @param string $prefix Префикс адреса, три символа. |
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* @return int |
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* @throws Exception |
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*/ |
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private function prefixToVersion(string $prefix): int |
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{ |
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if ($prefix === 'genesis') { |
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return 0; |
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} |
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if (strlen($prefix) !== 3) { |
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throw new Exception('bech32: invalid prefix length'); |
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} |
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$ch1 = ord($prefix[0]) - 96; |
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$ch2 = ord($prefix[1]) - 96; |
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$ch3 = ord($prefix[2]) - 96; |
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$this->checkPrefixChars([$ch1, $ch2, $ch3]); |
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return ($ch1 << 10) + ($ch2 << 5) + $ch3; |
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} |
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/** |
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* Преобразует префикс в бинарное представление. |
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* @param string $prefix Префикс адреса, три символа. |
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* @return string |
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* @throws Exception |
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*/ |
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private function prefixToBytes(string $prefix): string |
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{ |
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return $this->uint16ToBytes($this->prefixToVersion($prefix)); |
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} |
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/** |
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* @param array<int, int> $chars |
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* @return void |
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* @throws Exception |
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*/ |
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private function checkPrefixChars(array $chars): void |
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{ |
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foreach ($chars as $chr) { |
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if ($chr < 1 || $chr > 26) { |
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throw new Exception('bech32: invalid prefix character'); |
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} |
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} |
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} |
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/** |
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* @param int $value |
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* @return string |
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*/ |
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private function uint16ToBytes(int $value): string |
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{ |
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return (chr($value >> 8 & 0xff) . chr($value & 0xff)); |
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} |
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/** |
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* @param string $bytes |
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* @return int |
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*/ |
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private function bytesToUint16(string $bytes): int |
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{ |
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return ((ord($bytes[0]) << 8) + ord($bytes[1])); |
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} |
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/** |
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* @param int $value |
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* @return string |
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*/ |
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private function int64ToBytes(int $value): string |
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{ |
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return chr($value >> 56 & 0xff) . chr($value >> 48 & 0xff) . chr($value >> 40 & 0xff) |
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. chr($value >> 32 & 0xff) . chr($value >> 24 & 0xff) . chr($value >> 16 & 0xff) |
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. chr($value >> 8 & 0xff) . chr($value & 0xff); |
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} |
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/** |
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* @param string $bytes |
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* @return int |
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*/ |
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2 |
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private function bytesToInt64(string $bytes): int |
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{ |
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return (ord($bytes[0]) << 56) | (ord($bytes[1]) << 48) | (ord($bytes[2]) << 40) | (ord($bytes[3]) << 32) |
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| (ord($bytes[4]) << 24) | (ord($bytes[5]) << 16) | (ord($bytes[6]) << 8) | (ord($bytes[7])); |
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} |
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} |
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umi-top /
umi-core-php
