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<?php |
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declare(strict_types=1); |
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namespace FakeSocket; |
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use FakeSocket\{ |
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CanCopy, |
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StreamException, |
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StreamWrapper, |
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Stream\Buffer |
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}; |
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use InvalidArgumentException; |
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final class StreamFactory |
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{ |
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use CanCopy; |
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/** @const int */ |
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private const MIN_PORT = 1; |
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/** @const int 16bit */ |
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private const MAX_PORT = 65535; |
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/** @var string */ |
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private $protocol; |
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/** @var string */ |
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private $spec; |
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/** @var string */ |
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private $host; |
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/** @var int */ |
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private $port; |
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/** @var int */ |
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private $read; |
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/** @var int */ |
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private $readAfter; |
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/** @var int */ |
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private $readEvery; |
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/** @var int */ |
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private $write; |
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/** @var int */ |
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private $writeAfter; |
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/** @var int */ |
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private $writeEvery; |
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public static function make(string $dataSourceName): self |
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{ |
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$components = parse_url($dataSourceName); |
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$host = $components['host'] ?? $components['path']; |
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if (!isset($host)) { |
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throw StreamException::invalidDataSource(); |
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} |
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static $defaultSpec = Buffer::class; |
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$factory = new self($defaultSpec); |
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$factory->protocol = $components['scheme'] ?? 'fake'; |
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$factory->host = $host; |
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if (isset($components['port'])) { |
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$factory = $factory->withPort($components['port']); |
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} |
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return $factory; |
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} |
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public function __construct(string $spec) |
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{ |
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if (!is_subclass_of($spec, StreamWrapper::class)) { |
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throw StreamException::invalidClass($spec); |
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} |
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$this->spec = $spec; |
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} |
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public function register(): string |
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{ |
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if (in_array($this->protocol, stream_get_wrappers())) { |
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stream_wrapper_unregister($this->protocol); |
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} |
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stream_wrapper_register($this->protocol, $this->spec); |
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if (isset($this->port)) { |
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$this->host = "{$this->host}:{$this->port}"; |
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} |
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$query = [ |
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'read' => $this->read, |
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'read_after' => $this->readAfter, |
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'read_every' => $this->readEvery, |
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'write' => $this->write, |
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'write_after' => $this->writeAfter, |
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'write_every' => $this->writeEvery, |
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]; |
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$query = http_build_query($query); |
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empty($query) ?: $query = "/?$query"; |
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return "{$this->protocol}://{$this->host}{$query}"; |
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} |
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public function withProtocol(string $protocol): self |
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{ |
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return $this->copy('protocol', $protocol); |
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} |
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public function withHost(string $host): self |
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{ |
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return $this->copy('host', $host); |
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} |
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public function withPort(int $port): self |
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{ |
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if ($port < self::MIN_PORT || $port > self::MAX_PORT) { |
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throw StreamException::invalidPortRange( |
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self::MIN_PORT, |
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self::MAX_PORT |
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); |
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} |
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return $this->copy('port', $port); |
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} |
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public function withRead(int $limit = -1): self |
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{ |
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return $this->copy('read', $limit); |
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} |
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public function withWrite(int $limit = -1): self |
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{ |
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return $this->copy('write', $limit); |
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} |
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public function withoutRead(): self |
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{ |
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return $this->copy('read', 0); |
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} |
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public function withoutWrite(): self |
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{ |
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return $this->copy('write', 0); |
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} |
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public function withReadAfter(int $limit = 0): self |
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{ |
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return $this->copy('readAfter', $limit); |
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} |
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public function withWriteAfter(int $limit = 0): self |
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{ |
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return $this->copy('writeAfter', $limit); |
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} |
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public function withReadEvery(int $limit = 1): self |
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{ |
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return $this->copy('readEvery', $limit); |
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} |
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public function withWriteEvery(int $limit = 1): self |
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{ |
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return $this->copy('writeEvery', $limit); |
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} |
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} |
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Let’s assume that you have a directory layout like this:
and let’s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: