12 changed files with 403 additions and 314 deletions
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25src/APIConnector.php
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130src/APILengthCoDec.php
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40src/Client.php
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39src/Helpers/BinaryStringHelper.php
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23src/Interfaces/StreamInterface.php
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21src/SocketTrait.php
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70src/Streams/ResourceStream.php
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48src/Streams/StringStream.php
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78tests/APIConnectorTest.php
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4tests/APILengthCoDecTest.php
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159tests/Streams/ResourceStreamTest.php
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80tests/Streams/StringStreamTest.php
@ -1,60 +1,65 @@ |
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<?php |
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namespace RouterOS\Helpers; |
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/** |
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* class BinaryStringHelper |
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* |
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* Strings and binary datas manipulations |
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* |
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* Strings and binary data manipulations |
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* |
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* @package RouterOS\Helpers |
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* @since 0.9 |
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*/ |
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|
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class BinaryStringHelper |
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{ |
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/** |
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* Convert an integer value in a "Network Byte Ordered" binary string (most significant value first) |
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* |
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* Reads the integer, starting from the most signficant byte, one byte a time. |
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* Reads the integer, starting from the most significant byte, one byte a time. |
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* Once reach a non 0 byte, construct a binary string representing this values |
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* ex : |
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* ex : |
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* 0xFF7 => chr(0x0F).chr(0xF7) |
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* 0x12345678 => chr(0x12).chr(0x34).chr(0x56).chr(0x76) |
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* Compatible with 8, 16, 32, 64 etc.. bits systems |
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* |
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* @see https://en.wikipedia.org/wiki/Endianness |
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* @param int $value the integer value to be converted |
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* @return string the binary string |
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*/ |
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public static function IntegerToNBOBinaryString(int $value) |
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* @param int $value the integer value to be converted |
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* @return string the binary string |
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*/ |
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public static function IntegerToNBOBinaryString(int $value): string |
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{ |
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// Initialize an empty string
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$buffer = ''; |
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// Lets start from the most significant byte
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for ($i=(PHP_INT_SIZE-1); $i>=0; $i--) { |
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for ($i = (PHP_INT_SIZE - 1); $i >= 0; $i--) { |
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// Prepare a mask to keep only the most significant byte of $value
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$mask = 0xFF << ($i*8); |
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$mask = 0xFF << ($i * 8); |
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// If the most significant byte is not 0, the final string must contain it
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// If we have already started to construct the string (i.e. there are more signficant digits)
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// we must set the byte, even if it is a 0.
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// 0xFF00FF, for example, require to set the second byte byte with a 0 value
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if (($value & $mask) || strlen($buffer)!=0) { |
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// Get the curent byte by shifting it to least significant position and add it to the string
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if (($value & $mask) || $buffer !== '') { |
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// Get the current byte by shifting it to least significant position and add it to the string
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// 0xFF12345678 => 0xFF
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$byte = $value>>(8*$i); |
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$byte = $value >> (8 * $i); |
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$buffer .= chr($byte); |
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// Set the most significant byte to 0 so we can restart the process being shure
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// that the value is left padded with 0
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// 0xFF12345678 => 0x12345678
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// -1 = 0xFFFFF.... (number of F depend of PHP_INT_SIZE )
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$mask = -1 >> ((PHP_INT_SIZE-$i)*8); |
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$mask = -1 >> ((PHP_INT_SIZE - $i) * 8); |
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$value &= $mask; |
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} |
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} |
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// Special case, 0 will not fill the buffer, have to construct it manualy
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if (0==$value) { |
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if (0 === $value) { |
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$buffer = chr(0); |
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} |
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return $buffer; |
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} |
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} |
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} |
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