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slawkens
parent
30107222d4
commit
48f6ca0eba
@ -15,15 +15,15 @@
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/**
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* Binary buffer container.
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*
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*
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* <p>
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* This is generic class for classes that uses buffer-baser read-write operations (it can also emulate C-like pointers).
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* <p>
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*
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*
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* <p>
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* Note that unlike <var>NetworkMessage</var> class from OTServ C++ source code, in this one reading and writing positions are separated so you can pararelly read and write it's content like for example using object of this class as stack.
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* </p>
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*
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*
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* @package POT
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* @version 0.1.3
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* @property string $buffer Properties binary string.
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@ -39,162 +39,162 @@ class OTS_Buffer
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{
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/**
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* Node properties stream.
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*
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*
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* @var string
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*/
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protected $buffer;
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protected $buffer;
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/**
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* Properties stream pointer.
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*
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*
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* @var int
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*/
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protected $pos;
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protected $pos;
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/**
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* Initializes new buffered reader.
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*
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*
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* @param string $buffer Buffer content.
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*/
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public function __construct($buffer = '')
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{
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$this->buffer = $buffer;
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$this->pos = 0;
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}
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public function __construct($buffer = '')
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{
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$this->buffer = $buffer;
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$this->pos = 0;
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}
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/**
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* Magic PHP5 method.
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*
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*
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* <p>
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* Allows object importing from {@link http://www.php.net/manual/en/function.var-export.php var_export()}.
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* </p>
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*
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*
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* @param array $properties List of object properties.
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*/
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public static function __set_state($properties)
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{
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$object = new self();
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public static function __set_state($properties)
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{
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$object = new self();
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// loads properties
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foreach($properties as $name => $value)
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{
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$object->$name = $value;
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}
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// loads properties
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foreach($properties as $name => $value)
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{
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$object->$name = $value;
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}
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return $object;
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}
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return $object;
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}
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/**
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* Returs properties stream.
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*
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*
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* @return string Properties stream.
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*/
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public function getBuffer()
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{
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return $this->buffer;
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}
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public function getBuffer()
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{
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return $this->buffer;
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}
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/**
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* Sets properties stream.
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*
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*
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* @param string Properties stream.
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*/
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public function setBuffer($buffer)
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{
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$this->buffer = $buffer;
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$this->pos = 0;
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}
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public function setBuffer($buffer)
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{
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$this->buffer = $buffer;
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$this->pos = 0;
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}
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/**
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* Checks if there is anything left in stream.
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*
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*
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* @return bool False if pointer is at the end of stream.
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*/
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public function isValid()
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{
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return $this->pos < strlen($this->buffer);
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}
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public function isValid()
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{
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return $this->pos < strlen($this->buffer);
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}
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/**
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* Checks stream end state.
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*
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*
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* @param int $size Amount of bytes that are going to be read.
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* @throws E_OTS_OutOfBuffer When there is read attemp after end of stream.
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*/
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protected function check($size = 1)
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{
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if( strlen($this->buffer) < $this->pos + $size)
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{
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throw new E_OTS_OutOfBuffer();
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}
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}
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protected function check($size = 1)
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{
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if( strlen($this->buffer) < $this->pos + $size)
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{
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throw new E_OTS_OutOfBuffer();
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}
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}
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/**
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* Returns single byte.
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*
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*
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* @return int Byte (char) value.
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* @throws E_OTS_OutOfBuffer When there is read attemp after end of stream.
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*/
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public function getChar()
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{
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// checks buffer size
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$this->check();
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public function getChar()
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{
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// checks buffer size
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$this->check();
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$value = ord($this->buffer[$this->pos]);
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$this->pos++;
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return $value;
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}
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$value = ord($this->buffer[$this->pos]);
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$this->pos++;
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return $value;
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}
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/**
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* Appends single byte to buffer.
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*
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*
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* @param int $char Byte (char) value.
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*/
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public function putChar($char)
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{
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$this->buffer .= chr($char);
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}
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public function putChar($char)
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{
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$this->buffer .= chr($char);
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}
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/**
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* Returns double byte.
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*
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*
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* @return int Word (short) value.
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* @throws E_OTS_OutOfBuffer When there is read attemp after end of stream.
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*/
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public function getShort()
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{
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// checks buffer size
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$this->check(2);
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public function getShort()
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{
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// checks buffer size
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$this->check(2);
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$value = unpack('v', substr($this->buffer, $this->pos, 2) );
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$this->pos += 2;
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return $value[1];
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}
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$value = unpack('v', substr($this->buffer, $this->pos, 2) );
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$this->pos += 2;
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return $value[1];
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}
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/**
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* Appends double byte to buffer.
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*
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*
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* @param int $short Word (short) value.
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*/
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public function putShort($short)
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{
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$this->buffer .= pack('v', $short);
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}
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public function putShort($short)
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{
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$this->buffer .= pack('v', $short);
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}
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/**
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* Returns quater byte.
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*
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*
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* @return int Double word (long) value.
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* @throws E_OTS_OutOfBuffer When there is read attemp after end of stream.
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*/
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public function getLong()
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{
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// checks buffer size
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$this->check(4);
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public function getLong()
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{
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// checks buffer size
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$this->check(4);
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$value = unpack('V', substr($this->buffer, $this->pos, 4) );
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$this->pos += 4;
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return $value[1];
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}
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$value = unpack('V', substr($this->buffer, $this->pos, 4) );
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$this->pos += 4;
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return $value[1];
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}
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public function getLongLong()
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{
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@ -208,222 +208,222 @@ class OTS_Buffer
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/**
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* Appends quater byte to buffer.
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*
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*
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* @param int $long Double word (long) value.
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*/
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public function putLong($long)
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{
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$this->buffer .= pack('V', $long);
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}
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public function putLong($long)
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{
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$this->buffer .= pack('V', $long);
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}
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/**
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* Returns string from buffer.
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*
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*
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* <p>
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* If length is not given then treats first short value from current buffer as string length.
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* </p>
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*
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*
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* @param int|bool $length String length.
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* @return string First substring.
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* @throws E_OTS_OutOfBuffer When there is read attemp after end of stream.
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*/
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public function getString($length = false)
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{
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// reads string length if not given
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if($length === false)
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{
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$length = $this->getShort();
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}
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public function getString($length = false)
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{
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// reads string length if not given
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if($length === false)
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{
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$length = $this->getShort();
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}
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// checks buffer size
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$this->check($length);
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// checks buffer size
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$this->check($length);
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// copies substring
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$value = substr($this->buffer, $this->pos, $length);
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$this->pos += $length;
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return $value;
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}
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// copies substring
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$value = substr($this->buffer, $this->pos, $length);
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$this->pos += $length;
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return $value;
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}
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/**
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* Appends string to buffer.
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*
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*
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* @param string $string Binary length.
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* @param bool $dynamic Whether if string length is fixed or not (if it is dynamic then length will be inserted as short before string chunk).
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*/
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public function putString($string, $dynamic = true)
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{
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// appends string length if requires
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if($dynamic)
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{
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$this->putShort( strlen($string) );
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}
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public function putString($string, $dynamic = true)
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{
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// appends string length if requires
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if($dynamic)
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{
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$this->putShort( strlen($string) );
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}
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$this->buffer .= $string;
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}
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$this->buffer .= $string;
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}
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/**
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* Empties buffer.
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*/
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public function reset()
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{
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$this->__construct();
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}
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public function reset()
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{
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$this->__construct();
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}
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/**
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* Returns current read position.
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*
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*
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* @return int Read position.
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*/
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public function getPos()
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{
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return $this->pos;
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}
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public function getPos()
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{
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return $this->pos;
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}
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/**
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* Seeks current reading position.
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*
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*
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* @param int $pos Read position.
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*/
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public function setPos($pos)
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{
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$this->pos = $pos;
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}
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public function setPos($pos)
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{
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$this->pos = $pos;
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}
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/**
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* Returns buffer size.
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*
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*
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* @return int Buffer length.
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*/
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public function getSize()
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{
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return strlen($this->buffer);
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}
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public function getSize()
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{
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return strlen($this->buffer);
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}
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/**
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* Skips given amount of bytes.
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*
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*
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* @param int $n Bytes to skip.
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* @throws E_OTS_OutOfBuffer When there is read attemp after end of stream.
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*/
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public function skip($n)
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{
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$this->check($n);
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$this->pos += $n;
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}
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public function skip($n)
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{
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$this->check($n);
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$this->pos += $n;
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}
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/**
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* Magic PHP5 method.
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*
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*
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* @param string $name Property name.
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* @return mixed Property value.
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* @throws OutOfBoundsException For non-supported properties.
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* @throws E_OTS_OutOfBuffer When there is read attemp after end of stream.
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*/
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public function __get($name)
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{
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switch($name)
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{
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// simple properties
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case 'buffer':
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return $this->buffer;
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public function __get($name)
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{
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switch($name)
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{
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// simple properties
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case 'buffer':
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return $this->buffer;
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// isValid() wrapper
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case 'valid':
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return $this->isValid();
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// isValid() wrapper
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case 'valid':
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return $this->isValid();
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// getChar() wrapper
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case 'char':
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return $this->getChar();
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// getChar() wrapper
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case 'char':
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return $this->getChar();
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|
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// getShort() wrapper
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case 'short':
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return $this->getShort();
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// getShort() wrapper
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case 'short':
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return $this->getShort();
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// getLong() wrapper
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case 'long':
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return $this->getLong();
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// getLong() wrapper
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case 'long':
|
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return $this->getLong();
|
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|
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// getString() wrapper
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case 'string':
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return $this->getString();
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// getString() wrapper
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case 'string':
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return $this->getString();
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// getPos() wrapper
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case 'pos':
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return $this->getPos();
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// getPos() wrapper
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case 'pos':
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return $this->getPos();
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|
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// getSize() wrapper
|
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case 'size':
|
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return $this->getSize();
|
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// getSize() wrapper
|
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case 'size':
|
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return $this->getSize();
|
||||
|
||||
default:
|
||||
throw new OutOfBoundsException();
|
||||
}
|
||||
}
|
||||
default:
|
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throw new OutOfBoundsException();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Magic PHP5 method.
|
||||
*
|
||||
*
|
||||
* @version 0.1.3
|
||||
* @param string $name Property name.
|
||||
* @param mixed $value Property value.
|
||||
* @throws OutOfBoundsException For non-supported properties.
|
||||
*/
|
||||
public function __set($name, $value)
|
||||
{
|
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switch($name)
|
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{
|
||||
// buffer needs to be reset
|
||||
case 'buffer':
|
||||
$this->setBuffer($value);
|
||||
break;
|
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public function __set($name, $value)
|
||||
{
|
||||
switch($name)
|
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{
|
||||
// buffer needs to be reset
|
||||
case 'buffer':
|
||||
$this->setBuffer($value);
|
||||
break;
|
||||
|
||||
// putChar() wrapper
|
||||
case 'char':
|
||||
$this->putChar($value);
|
||||
break;
|
||||
// putChar() wrapper
|
||||
case 'char':
|
||||
$this->putChar($value);
|
||||
break;
|
||||
|
||||
// putShort() wrapper
|
||||
case 'short':
|
||||
$this->putShort($value);
|
||||
break;
|
||||
// putShort() wrapper
|
||||
case 'short':
|
||||
$this->putShort($value);
|
||||
break;
|
||||
|
||||
// putLong() wrapper
|
||||
case 'long':
|
||||
$this->putLong($value);
|
||||
break;
|
||||
// putLong() wrapper
|
||||
case 'long':
|
||||
$this->putLong($value);
|
||||
break;
|
||||
|
||||
// putString() wrapper
|
||||
case 'string':
|
||||
$this->putString($value);
|
||||
break;
|
||||
// putString() wrapper
|
||||
case 'string':
|
||||
$this->putString($value);
|
||||
break;
|
||||
|
||||
// setPos() wrapper
|
||||
case 'pos':
|
||||
$this->setPos($value);
|
||||
break;
|
||||
// setPos() wrapper
|
||||
case 'pos':
|
||||
$this->setPos($value);
|
||||
break;
|
||||
|
||||
default:
|
||||
throw new OutOfBoundsException();
|
||||
}
|
||||
}
|
||||
default:
|
||||
throw new OutOfBoundsException();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns string representation of buffer object.
|
||||
*
|
||||
*
|
||||
* @return string Object's buffer.
|
||||
*/
|
||||
public function __toString()
|
||||
{
|
||||
return $this->buffer;
|
||||
}
|
||||
public function __toString()
|
||||
{
|
||||
return $this->buffer;
|
||||
}
|
||||
|
||||
/**
|
||||
* Resets pointer of cloned object.
|
||||
*/
|
||||
public function __clone()
|
||||
{
|
||||
$this->pos = 0;
|
||||
}
|
||||
public function __clone()
|
||||
{
|
||||
$this->pos = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/**#@-*/
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user