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Direktori : /home2/selectio/public_html/limpiar.in.net/vendor/maennchen/zipstream-php/src/ |
Current File : /home2/selectio/public_html/limpiar.in.net/vendor/maennchen/zipstream-php/src/Bigint.php |
<?php declare(strict_types=1); namespace ZipStream; use OverflowException; class Bigint { /** * @var int[] */ private $bytes = [0, 0, 0, 0, 0, 0, 0, 0]; /** * Initialize the bytes array * * @param int $value */ public function __construct(int $value = 0) { $this->fillBytes($value, 0, 8); } /** * Get an instance * * @param int $value * @return Bigint */ public static function init(int $value = 0): self { return new self($value); } /** * Fill bytes from low to high * * @param int $low * @param int $high * @return Bigint */ public static function fromLowHigh(int $low, int $high): self { $bigint = new self(); $bigint->fillBytes($low, 0, 4); $bigint->fillBytes($high, 4, 4); return $bigint; } /** * Get high 32 * * @return int */ public function getHigh32(): int { return $this->getValue(4, 4); } /** * Get value from bytes array * * @param int $end * @param int $length * @return int */ public function getValue(int $end = 0, int $length = 8): int { $result = 0; for ($i = $end + $length - 1; $i >= $end; $i--) { $result <<= 8; $result |= $this->bytes[$i]; } return $result; } /** * Get low FF * * @param bool $force * @return float */ public function getLowFF(bool $force = false): float { if ($force || $this->isOver32()) { return (float)0xFFFFFFFF; } return (float)$this->getLow32(); } /** * Check if is over 32 * * @psalm-suppress ArgumentTypeCoercion * @param bool $force * @return bool */ public function isOver32(bool $force = false): bool { // value 0xFFFFFFFF already needs a Zip64 header return $force || max(array_slice($this->bytes, 4, 4)) > 0 || min(array_slice($this->bytes, 0, 4)) === 0xFF; } /** * Get low 32 * * @return int */ public function getLow32(): int { return $this->getValue(0, 4); } /** * Get hexadecimal * * @return string */ public function getHex64(): string { $result = '0x'; for ($i = 7; $i >= 0; $i--) { $result .= sprintf('%02X', $this->bytes[$i]); } return $result; } /** * Add * * @param Bigint $other * @return Bigint */ public function add(self $other): self { $result = clone $this; $overflow = false; for ($i = 0; $i < 8; $i++) { $result->bytes[$i] += $other->bytes[$i]; if ($overflow) { $result->bytes[$i]++; $overflow = false; } if ($result->bytes[$i] & 0x100) { $overflow = true; $result->bytes[$i] &= 0xFF; } } if ($overflow) { throw new OverflowException(); } return $result; } /** * Fill the bytes field with int * * @param int $value * @param int $start * @param int $count * @return void */ protected function fillBytes(int $value, int $start, int $count): void { for ($i = 0; $i < $count; $i++) { $this->bytes[$start + $i] = $i >= PHP_INT_SIZE ? 0 : $value & 0xFF; $value >>= 8; } } }