@@ 9-121 (lines=113) @@ | ||
6 | use PhpBinaryReader\BitMask; |
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7 | use PhpBinaryReader\Endian; |
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8 | ||
9 | class Int16 implements TypeInterface |
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10 | { |
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11 | /** |
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12 | * @var string |
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13 | */ |
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14 | private $endianBig = 'n'; |
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15 | ||
16 | /** |
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17 | * @var string |
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18 | */ |
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19 | private $endianLittle = 'v'; |
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20 | ||
21 | /** |
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22 | * Returns an Unsigned 16-bit Integer |
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23 | * |
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24 | * @param \PhpBinaryReader\BinaryReader $br |
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25 | * @param null $length |
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26 | * @return int |
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27 | * @throws \OutOfBoundsException |
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28 | */ |
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29 | public function read(BinaryReader &$br, $length = null) |
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30 | { |
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31 | if (!$br->canReadBytes(2)) { |
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32 | throw new \OutOfBoundsException('Cannot read 16-bit int, it exceeds the boundary of the file'); |
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33 | } |
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34 | ||
35 | $endian = $br->getEndian() == Endian::ENDIAN_BIG ? $this->endianBig : $this->endianLittle; |
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36 | $segment = $br->readFromHandle(2); |
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37 | ||
38 | $data = unpack($endian, $segment); |
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39 | $data = $data[1]; |
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40 | ||
41 | if ($br->getCurrentBit() != 0) { |
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42 | $data = $this->bitReader($br, $data); |
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43 | } |
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44 | ||
45 | return $data; |
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46 | } |
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47 | ||
48 | /** |
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49 | * Returns a Signed 16-bit Integer |
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50 | * |
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51 | * @param \PhpBinaryReader\BinaryReader $br |
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52 | * @return int |
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53 | */ |
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54 | public function readSigned(&$br) |
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55 | { |
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56 | $this->setEndianBig('s'); |
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57 | $this->setEndianLittle('s'); |
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58 | ||
59 | $value = $this->read($br); |
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60 | ||
61 | $this->setEndianBig('n'); |
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62 | $this->setEndianLittle('v'); |
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63 | ||
64 | $endian = new Endian(); |
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65 | if ($br->getMachineByteOrder() != Endian::ENDIAN_LITTLE && $br->getEndian() == Endian::ENDIAN_LITTLE) { |
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66 | return $endian->convert($value); |
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67 | } else { |
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68 | return $value; |
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69 | } |
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70 | } |
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71 | ||
72 | /** |
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73 | * @param \PhpBinaryReader\BinaryReader $br |
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74 | * @param int $data |
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75 | * @return int |
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76 | */ |
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77 | private function bitReader(&$br, $data) |
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78 | { |
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79 | $bitmask = new BitMask(); |
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80 | $loMask = $bitmask->getMask($br->getCurrentBit(), BitMask::MASK_LO); |
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81 | $hiMask = $bitmask->getMask($br->getCurrentBit(), BitMask::MASK_HI); |
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82 | $hiBits = ($br->getNextByte() & $hiMask) << 8; |
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83 | $miBits = ($data & 0xFF00) >> (8 - $br->getCurrentBit()); |
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84 | $loBits = ($data & $loMask); |
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85 | $br->setNextByte($data & 0xFF); |
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86 | ||
87 | return $hiBits | $miBits | $loBits; |
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88 | } |
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89 | ||
90 | /** |
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91 | * @param string $endianBig |
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92 | */ |
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93 | public function setEndianBig($endianBig) |
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94 | { |
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95 | $this->endianBig = $endianBig; |
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96 | } |
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97 | ||
98 | /** |
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99 | * @return string |
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100 | */ |
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101 | public function getEndianBig() |
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102 | { |
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103 | return $this->endianBig; |
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104 | } |
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105 | ||
106 | /** |
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107 | * @param string $endianLittle |
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108 | */ |
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109 | public function setEndianLittle($endianLittle) |
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110 | { |
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111 | $this->endianLittle = $endianLittle; |
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112 | } |
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113 | ||
114 | /** |
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115 | * @return string |
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116 | */ |
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117 | public function getEndianLittle() |
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118 | { |
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119 | return $this->endianLittle; |
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120 | } |
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121 | } |
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122 |
@@ 9-122 (lines=114) @@ | ||
6 | use PhpBinaryReader\BitMask; |
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7 | use PhpBinaryReader\Endian; |
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8 | ||
9 | class Int32 implements TypeInterface |
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10 | { |
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11 | /** |
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12 | * @var string |
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13 | */ |
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14 | private $endianBig = 'N'; |
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15 | ||
16 | /** |
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17 | * @var string |
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18 | */ |
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19 | private $endianLittle = 'V'; |
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20 | ||
21 | /** |
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22 | * Returns an Unsigned 32-bit Integer |
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23 | * |
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24 | * @param \PhpBinaryReader\BinaryReader $br |
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25 | * @param null $length |
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26 | * @return int |
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27 | * @throws \OutOfBoundsException |
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28 | */ |
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29 | public function read(BinaryReader &$br, $length = null) |
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30 | { |
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31 | if (!$br->canReadBytes(4)) { |
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32 | throw new \OutOfBoundsException('Cannot read 32-bit int, it exceeds the boundary of the file'); |
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33 | } |
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34 | ||
35 | $endian = $br->getEndian() == Endian::ENDIAN_BIG ? $this->endianBig : $this->endianLittle; |
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36 | $segment = $br->readFromHandle(4); |
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37 | ||
38 | $data = unpack($endian, $segment); |
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39 | $data = $data[1]; |
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40 | ||
41 | if ($br->getCurrentBit() != 0) { |
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42 | $data = $this->bitReader($br, $data); |
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43 | } |
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44 | ||
45 | return $data; |
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46 | } |
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47 | ||
48 | /** |
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49 | * Returns a Signed 32-Bit Integer |
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50 | * |
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51 | * @param \PhpBinaryReader\BinaryReader $br |
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52 | * @return int |
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53 | */ |
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54 | public function readSigned(&$br) |
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55 | { |
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56 | $this->setEndianBig('l'); |
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57 | $this->setEndianLittle('l'); |
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58 | ||
59 | $value = $this->read($br); |
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60 | ||
61 | $this->setEndianBig('N'); |
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62 | $this->setEndianLittle('V'); |
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63 | ||
64 | if ($br->getMachineByteOrder() != Endian::ENDIAN_LITTLE && $br->getEndian() == Endian::ENDIAN_LITTLE) { |
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65 | $endian = new Endian(); |
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66 | ||
67 | return $endian->convert($value); |
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68 | } else { |
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69 | return $value; |
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70 | } |
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71 | } |
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72 | ||
73 | /** |
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74 | * @param \PhpBinaryReader\BinaryReader $br |
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75 | * @param int $data |
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76 | * @return int |
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77 | */ |
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78 | private function bitReader(&$br, $data) |
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79 | { |
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80 | $bitmask = new BitMask(); |
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81 | $loMask = $bitmask->getMask($br->getCurrentBit(), BitMask::MASK_LO); |
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82 | $hiMask = $bitmask->getMask($br->getCurrentBit(), BitMask::MASK_HI); |
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83 | $hiBits = ($br->getNextByte() & $hiMask) << 24; |
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84 | $miBits = ($data & 0xFFFFFF00) >> (8 - $br->getCurrentBit()); |
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85 | $loBits = ($data & $loMask); |
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86 | $br->setNextByte($data & 0xFF); |
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87 | ||
88 | return $hiBits | $miBits | $loBits; |
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89 | } |
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90 | ||
91 | /** |
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92 | * @param string $endianBig |
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93 | */ |
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94 | public function setEndianBig($endianBig) |
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95 | { |
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96 | $this->endianBig = $endianBig; |
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97 | } |
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98 | ||
99 | /** |
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100 | * @return string |
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101 | */ |
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102 | public function getEndianBig() |
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103 | { |
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104 | return $this->endianBig; |
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105 | } |
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106 | ||
107 | /** |
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108 | * @param string $endianLittle |
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109 | */ |
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110 | public function setEndianLittle($endianLittle) |
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111 | { |
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112 | $this->endianLittle = $endianLittle; |
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113 | } |
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114 | ||
115 | /** |
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116 | * @return string |
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117 | */ |
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118 | public function getEndianLittle() |
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119 | { |
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120 | return $this->endianLittle; |
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121 | } |
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122 | } |
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123 |