Mercurial > hg > Database > jungle-sharp

annotate Main/jungle-main/persistent/msgpack/src/MsgPackReader.cs @ 20:1f99e150f336

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fix folder and add Object Mapper.
author Kazuma Takeda
date Thu, 15 Dec 2016 22:52:48 +0900
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20
1f99e150f336 fix folder and add Object Mapper.
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1 //
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2 // Copyright 2011 Kazuki Oikawa
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3 //
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4 // Licensed under the Apache License, Version 2.0 (the "License");
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5 // you may not use this file except in compliance with the License.
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6 // You may obtain a copy of the License at
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7 //
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8 // http://www.apache.org/licenses/LICENSE-2.0
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9 //
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10 // Unless required by applicable law or agreed to in writing, software
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11 // distributed under the License is distributed on an "AS IS" BASIS,
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12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 // See the License for the specific language governing permissions and
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14 // limitations under the License.
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15 //
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16
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17 using System;
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18 using System.IO;
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19 using System.Text;
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20
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21 namespace MsgPack
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22 {
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23 public class MsgPackReader
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24 {
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25 Stream _strm;
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26 byte[] _tmp0 = new byte[8];
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27 byte[] _tmp1 = new byte[8];
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28
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29 Encoding _encoding = Encoding.UTF8;
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30 //Decoder _decoder = Encoding.UTF8.GetDecoder ();
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31 byte[] _buf = new byte[64];
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32
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33 public MsgPackReader (Stream strm)
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34 {
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35 _strm = strm;
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36 }
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37
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38 public TypePrefixes Type { get; private set; }
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39
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40 public bool ValueBoolean { get; private set; }
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41 public uint Length { get; private set; }
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42
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43 public uint ValueUnsigned { get; private set; }
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44 public ulong ValueUnsigned64 { get; private set; }
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45
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46 public int ValueSigned { get; private set; }
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47 public long ValueSigned64 { get; private set; }
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48
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49 public float ValueFloat { get; private set; }
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50 public double ValueDouble { get; private set; }
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51
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52 public bool IsSigned ()
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53 {
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54 return this.Type == TypePrefixes.NegativeFixNum ||
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55 this.Type == TypePrefixes.PositiveFixNum ||
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56 this.Type == TypePrefixes.Int8 ||
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57 this.Type == TypePrefixes.Int16 ||
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58 this.Type == TypePrefixes.Int32;
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59 }
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60
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61 public bool IsBoolean ()
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62 {
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63 return this.Type == TypePrefixes.True || this.Type == TypePrefixes.False;
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64 }
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65
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66 public bool IsSigned64 ()
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67 {
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68 return this.Type == TypePrefixes.Int64;
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69 }
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70
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71 public bool IsUnsigned ()
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72 {
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73 return this.Type == TypePrefixes.PositiveFixNum ||
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74 this.Type == TypePrefixes.UInt8 ||
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75 this.Type == TypePrefixes.UInt16 ||
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76 this.Type == TypePrefixes.UInt32;
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77 }
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78
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79 public bool IsUnsigned64 ()
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80 {
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81 return this.Type == TypePrefixes.UInt64;
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82 }
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83
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84 public bool IsRaw ()
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85 {
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86 return this.Type == TypePrefixes.FixRaw || this.Type == TypePrefixes.Raw16 || this.Type == TypePrefixes.Raw32;
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87 }
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88
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89 public bool IsArray ()
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90 {
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91 return this.Type == TypePrefixes.FixArray || this.Type == TypePrefixes.Array16 || this.Type == TypePrefixes.Array32;
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92 }
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93
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94 public bool IsMap ()
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95 {
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96 return this.Type == TypePrefixes.FixMap || this.Type == TypePrefixes.Map16 || this.Type == TypePrefixes.Map32;
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97 }
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98
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99 public bool Read ()
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100 {
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101 byte[] tmp0 = _tmp0, tmp1 = _tmp1;
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102 int x = _strm.ReadByte ();
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103 if (x < 0)
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104 return false; // EOS
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105
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106 if (x >= 0x00 && x <= 0x7f) {
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107 this.Type = TypePrefixes.PositiveFixNum;
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108 } else if (x >= 0xe0 && x <= 0xff) {
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109 this.Type = TypePrefixes.NegativeFixNum;
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110 } else if (x >= 0xa0 && x <= 0xbf) {
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111 this.Type = TypePrefixes.FixRaw;
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112 } else if (x >= 0x90 && x <= 0x9f) {
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113 this.Type = TypePrefixes.FixArray;
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114 } else if (x >= 0x80 && x <= 0x8f) {
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115 this.Type = TypePrefixes.FixMap;
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116 } else {
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117 this.Type = (TypePrefixes)x;
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118 }
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119
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120 switch (this.Type) {
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121 case TypePrefixes.Nil:
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122 break;
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123 case TypePrefixes.False:
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124 ValueBoolean = false;
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125 break;
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126 case TypePrefixes.True:
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127 ValueBoolean = true;
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128 break;
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129 case TypePrefixes.Float:
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130 _strm.Read (tmp0, 0, 4);
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131 if (BitConverter.IsLittleEndian) {
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132 tmp1[0] = tmp0[3];
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133 tmp1[1] = tmp0[2];
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134 tmp1[2] = tmp0[1];
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135 tmp1[3] = tmp0[0];
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136 ValueFloat = BitConverter.ToSingle (tmp1, 0);
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137 } else {
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138 ValueFloat = BitConverter.ToSingle (tmp0, 0);
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139 }
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140 break;
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141 case TypePrefixes.Double:
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142 _strm.Read (tmp0, 0, 8);
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143 if (BitConverter.IsLittleEndian) {
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144 tmp1[0] = tmp0[7];
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145 tmp1[1] = tmp0[6];
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146 tmp1[2] = tmp0[5];
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147 tmp1[3] = tmp0[4];
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148 tmp1[4] = tmp0[3];
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149 tmp1[5] = tmp0[2];
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150 tmp1[6] = tmp0[1];
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151 tmp1[7] = tmp0[0];
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152 ValueDouble = BitConverter.ToDouble (tmp1, 0);
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153 } else {
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154 ValueDouble = BitConverter.ToDouble (tmp0, 0);
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155 }
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156 break;
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157 case TypePrefixes.NegativeFixNum:
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158 ValueSigned = (x & 0x1f) - 0x20;
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159 break;
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160 case TypePrefixes.PositiveFixNum:
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161 ValueSigned = x & 0x7f;
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162 ValueUnsigned = (uint)ValueSigned;
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163 break;
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164 case TypePrefixes.UInt8:
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165 x = _strm.ReadByte ();
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166 if (x < 0)
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167 throw new FormatException ();
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168 ValueUnsigned = (uint)x;
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169 break;
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170 case TypePrefixes.UInt16:
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171 if (_strm.Read (tmp0, 0, 2) != 2)
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172 throw new FormatException ();
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173 ValueUnsigned = ((uint)tmp0[0] << 8) | (uint)tmp0[1];
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174 break;
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175 case TypePrefixes.UInt32:
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176 if (_strm.Read (tmp0, 0, 4) != 4)
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177 throw new FormatException ();
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178 ValueUnsigned = ((uint)tmp0[0] << 24) | ((uint)tmp0[1] << 16) | ((uint)tmp0[2] << 8) | (uint)tmp0[3];
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179 break;
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180 case TypePrefixes.UInt64:
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181 if (_strm.Read (tmp0, 0, 8) != 8)
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182 throw new FormatException ();
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183 ValueUnsigned64 = ((ulong)tmp0[0] << 56) | ((ulong)tmp0[1] << 48) | ((ulong)tmp0[2] << 40) | ((ulong)tmp0[3] << 32) | ((ulong)tmp0[4] << 24) | ((ulong)tmp0[5] << 16) | ((ulong)tmp0[6] << 8) | (ulong)tmp0[7];
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184 break;
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185 case TypePrefixes.Int8:
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186 x = _strm.ReadByte ();
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187 if (x < 0)
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188 throw new FormatException ();
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189 ValueSigned = (sbyte)x;
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190 break;
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191 case TypePrefixes.Int16:
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192 if (_strm.Read (tmp0, 0, 2) != 2)
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193 throw new FormatException ();
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194 ValueSigned = (short)((tmp0[0] << 8) | tmp0[1]);
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195 break;
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196 case TypePrefixes.Int32:
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197 if (_strm.Read (tmp0, 0, 4) != 4)
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198 throw new FormatException ();
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199 ValueSigned = (tmp0[0] << 24) | (tmp0[1] << 16) | (tmp0[2] << 8) | tmp0[3];
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200 break;
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201 case TypePrefixes.Int64:
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202 if (_strm.Read (tmp0, 0, 8) != 8)
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203 throw new FormatException ();
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204 ValueSigned64 = ((long)tmp0[0] << 56) | ((long)tmp0[1] << 48) | ((long)tmp0[2] << 40) | ((long)tmp0[3] << 32) | ((long)tmp0[4] << 24) | ((long)tmp0[5] << 16) | ((long)tmp0[6] << 8) | (long)tmp0[7];
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205 break;
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206 case TypePrefixes.FixRaw:
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207 Length = (uint)(x & 0x1f);
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208 break;
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209 case TypePrefixes.FixArray:
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210 case TypePrefixes.FixMap:
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211 Length = (uint)(x & 0xf);
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212 break;
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213 case TypePrefixes.Raw16:
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214 case TypePrefixes.Array16:
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215 case TypePrefixes.Map16:
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216 if (_strm.Read (tmp0, 0, 2) != 2)
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217 throw new FormatException ();
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218 Length = ((uint)tmp0[0] << 8) | (uint)tmp0[1];
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219 break;
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220 case TypePrefixes.Raw32:
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221 case TypePrefixes.Array32:
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222 case TypePrefixes.Map32:
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223 if (_strm.Read (tmp0, 0, 4) != 4)
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224 throw new FormatException ();
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225 Length = ((uint)tmp0[0] << 24) | ((uint)tmp0[1] << 16) | ((uint)tmp0[2] << 8) | (uint)tmp0[3];
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226 break;
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227 default:
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228 throw new FormatException ();
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229 }
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230 return true;
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231 }
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232
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233 public int ReadValueRaw (byte[] buf, int offset, int count)
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234 {
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235 return _strm.Read (buf, offset, count);
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236 }
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237
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238 public string ReadRawString ()
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239 {
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240 return ReadRawString (_buf);
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241 }
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242
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243 public string ReadRawString (byte[] buf)
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244 {
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245 if (this.Length < buf.Length) {
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246 if (ReadValueRaw (buf, 0, (int)this.Length) != this.Length)
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247 throw new FormatException ();
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248 return _encoding.GetString (buf, 0, (int)this.Length);
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249 }
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250
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251 // Poor implementation
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252 byte[] tmp = new byte[(int)this.Length];
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253 if (ReadValueRaw (tmp, 0, tmp.Length) != tmp.Length)
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254 throw new FormatException ();
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255 return _encoding.GetString (tmp);
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256 }
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257 }
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258 }