opensim – Blame information for rev 1
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1 | eva | 1 | /* |
2 | * Copyright (c) Contributors, http://opensimulator.org/ |
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3 | * See CONTRIBUTORS.TXT for a full list of copyright holders. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions are met: |
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7 | * * Redistributions of source code must retain the above copyright |
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8 | * notice, this list of conditions and the following disclaimer. |
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9 | * * Redistributions in binary form must reproduce the above copyright |
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10 | * notice, this list of conditions and the following disclaimer in the |
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11 | * documentation and/or other materials provided with the distribution. |
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12 | * * Neither the name of the OpenSimulator Project nor the |
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13 | * names of its contributors may be used to endorse or promote products |
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14 | * derived from this software without specific prior written permission. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY |
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17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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19 | * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY |
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20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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26 | */ |
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27 | |||
28 | using System; |
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29 | using System.Collections; |
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30 | using System.Globalization; |
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31 | using System.IO; |
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32 | using System.Security.Cryptography; |
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33 | using System.Text; |
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34 | using System.Xml; |
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35 | using OpenMetaverse; |
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36 | |||
37 | namespace OpenSim.Framework.Capabilities |
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38 | { |
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39 | /// <summary> |
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40 | /// Borrowed from (a older version of) libsl for now, as their new llsd code doesn't work we our decoding code. |
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41 | /// </summary> |
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42 | public static class LLSD |
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43 | { |
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44 | /// <summary> |
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45 | /// |
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46 | /// </summary> |
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47 | public class LLSDParseException : Exception |
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48 | { |
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49 | public LLSDParseException(string message) : base(message) |
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50 | { |
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51 | } |
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52 | } |
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53 | |||
54 | /// <summary> |
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55 | /// |
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56 | /// </summary> |
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57 | public class LLSDSerializeException : Exception |
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58 | { |
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59 | public LLSDSerializeException(string message) : base(message) |
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60 | { |
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61 | } |
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62 | } |
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63 | |||
64 | /// <summary> |
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65 | /// |
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66 | /// </summary> |
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67 | /// <param name="b"></param> |
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68 | /// <returns></returns> |
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69 | public static object LLSDDeserialize(byte[] b) |
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70 | { |
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71 | return LLSDDeserialize(new MemoryStream(b, false)); |
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72 | } |
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73 | |||
74 | /// <summary> |
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75 | /// |
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76 | /// </summary> |
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77 | /// <param name="st"></param> |
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78 | /// <returns></returns> |
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79 | public static object LLSDDeserialize(Stream st) |
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80 | { |
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81 | XmlTextReader reader = new XmlTextReader(st); |
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82 | reader.Read(); |
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83 | SkipWS(reader); |
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84 | |||
85 | if (reader.NodeType != XmlNodeType.Element || reader.LocalName != "llsd") |
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86 | throw new LLSDParseException("Expected <llsd>"); |
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87 | |||
88 | reader.Read(); |
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89 | object ret = LLSDParseOne(reader); |
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90 | SkipWS(reader); |
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91 | |||
92 | if (reader.NodeType != XmlNodeType.EndElement || reader.LocalName != "llsd") |
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93 | throw new LLSDParseException("Expected </llsd>"); |
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94 | |||
95 | return ret; |
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96 | } |
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97 | |||
98 | /// <summary> |
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99 | /// |
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100 | /// </summary> |
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101 | /// <param name="obj"></param> |
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102 | /// <returns></returns> |
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103 | public static byte[] LLSDSerialize(object obj) |
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104 | { |
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105 | StringWriter sw = new StringWriter(); |
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106 | XmlTextWriter writer = new XmlTextWriter(sw); |
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107 | writer.Formatting = Formatting.None; |
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108 | |||
109 | writer.WriteStartElement(String.Empty, "llsd", String.Empty); |
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110 | LLSDWriteOne(writer, obj); |
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111 | writer.WriteEndElement(); |
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112 | |||
113 | writer.Close(); |
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114 | |||
115 | return Util.UTF8.GetBytes(sw.ToString()); |
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116 | } |
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117 | |||
118 | /// <summary> |
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119 | /// |
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120 | /// </summary> |
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121 | /// <param name="writer"></param> |
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122 | /// <param name="obj"></param> |
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123 | public static void LLSDWriteOne(XmlTextWriter writer, object obj) |
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124 | { |
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125 | if (obj == null) |
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126 | { |
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127 | writer.WriteStartElement(String.Empty, "undef", String.Empty); |
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128 | writer.WriteEndElement(); |
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129 | return; |
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130 | } |
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131 | |||
132 | if (obj is string) |
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133 | { |
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134 | writer.WriteStartElement(String.Empty, "string", String.Empty); |
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135 | writer.WriteString((string) obj); |
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136 | writer.WriteEndElement(); |
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137 | } |
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138 | else if (obj is int) |
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139 | { |
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140 | writer.WriteStartElement(String.Empty, "integer", String.Empty); |
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141 | writer.WriteString(obj.ToString()); |
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142 | writer.WriteEndElement(); |
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143 | } |
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144 | else if (obj is double) |
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145 | { |
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146 | writer.WriteStartElement(String.Empty, "real", String.Empty); |
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147 | writer.WriteString(obj.ToString()); |
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148 | writer.WriteEndElement(); |
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149 | } |
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150 | else if (obj is bool) |
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151 | { |
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152 | bool b = (bool) obj; |
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153 | writer.WriteStartElement(String.Empty, "boolean", String.Empty); |
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154 | writer.WriteString(b ? "1" : "0"); |
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155 | writer.WriteEndElement(); |
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156 | } |
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157 | else if (obj is ulong) |
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158 | { |
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159 | throw new Exception("ulong in LLSD is currently not implemented, fix me!"); |
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160 | } |
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161 | else if (obj is UUID) |
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162 | { |
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163 | UUID u = (UUID) obj; |
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164 | writer.WriteStartElement(String.Empty, "uuid", String.Empty); |
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165 | writer.WriteString(u.ToString()); |
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166 | writer.WriteEndElement(); |
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167 | } |
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168 | else if (obj is Hashtable) |
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169 | { |
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170 | Hashtable h = obj as Hashtable; |
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171 | writer.WriteStartElement(String.Empty, "map", String.Empty); |
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172 | foreach (string key in h.Keys) |
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173 | { |
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174 | writer.WriteStartElement(String.Empty, "key", String.Empty); |
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175 | writer.WriteString(key); |
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176 | writer.WriteEndElement(); |
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177 | LLSDWriteOne(writer, h[key]); |
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178 | } |
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179 | writer.WriteEndElement(); |
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180 | } |
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181 | else if (obj is ArrayList) |
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182 | { |
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183 | ArrayList a = obj as ArrayList; |
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184 | writer.WriteStartElement(String.Empty, "array", String.Empty); |
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185 | foreach (object item in a) |
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186 | { |
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187 | LLSDWriteOne(writer, item); |
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188 | } |
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189 | writer.WriteEndElement(); |
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190 | } |
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191 | else if (obj is byte[]) |
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192 | { |
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193 | byte[] b = obj as byte[]; |
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194 | writer.WriteStartElement(String.Empty, "binary", String.Empty); |
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195 | |||
196 | writer.WriteStartAttribute(String.Empty, "encoding", String.Empty); |
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197 | writer.WriteString("base64"); |
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198 | writer.WriteEndAttribute(); |
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199 | |||
200 | //// Calculate the length of the base64 output |
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201 | //long length = (long)(4.0d * b.Length / 3.0d); |
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202 | //if (length % 4 != 0) length += 4 - (length % 4); |
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203 | |||
204 | //// Create the char[] for base64 output and fill it |
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205 | //char[] tmp = new char[length]; |
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206 | //int i = Convert.ToBase64CharArray(b, 0, b.Length, tmp, 0); |
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207 | |||
208 | //writer.WriteString(new String(tmp)); |
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209 | |||
210 | writer.WriteString(Convert.ToBase64String(b)); |
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211 | writer.WriteEndElement(); |
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212 | } |
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213 | else |
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214 | { |
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215 | throw new LLSDSerializeException("Unknown type " + obj.GetType().Name); |
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216 | } |
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217 | } |
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218 | |||
219 | /// <summary> |
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220 | /// |
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221 | /// </summary> |
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222 | /// <param name="reader"></param> |
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223 | /// <returns></returns> |
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224 | public static object LLSDParseOne(XmlTextReader reader) |
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225 | { |
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226 | SkipWS(reader); |
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227 | if (reader.NodeType != XmlNodeType.Element) |
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228 | throw new LLSDParseException("Expected an element"); |
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229 | |||
230 | string dtype = reader.LocalName; |
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231 | object ret = null; |
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232 | |||
233 | switch (dtype) |
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234 | { |
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235 | case "undef": |
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236 | { |
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237 | if (reader.IsEmptyElement) |
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238 | { |
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239 | reader.Read(); |
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240 | return null; |
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241 | } |
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242 | |||
243 | reader.Read(); |
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244 | SkipWS(reader); |
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245 | ret = null; |
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246 | break; |
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247 | } |
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248 | case "boolean": |
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249 | { |
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250 | if (reader.IsEmptyElement) |
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251 | { |
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252 | reader.Read(); |
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253 | return false; |
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254 | } |
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255 | |||
256 | reader.Read(); |
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257 | string s = reader.ReadString().Trim(); |
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258 | |||
259 | if (s == String.Empty || s == "false" || s == "0") |
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260 | ret = false; |
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261 | else if (s == "true" || s == "1") |
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262 | ret = true; |
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263 | else |
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264 | throw new LLSDParseException("Bad boolean value " + s); |
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265 | |||
266 | break; |
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267 | } |
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268 | case "integer": |
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269 | { |
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270 | if (reader.IsEmptyElement) |
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271 | { |
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272 | reader.Read(); |
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273 | return 0; |
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274 | } |
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275 | |||
276 | reader.Read(); |
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277 | ret = Convert.ToInt32(reader.ReadString().Trim()); |
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278 | break; |
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279 | } |
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280 | case "real": |
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281 | { |
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282 | if (reader.IsEmptyElement) |
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283 | { |
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284 | reader.Read(); |
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285 | return 0.0f; |
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286 | } |
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287 | |||
288 | reader.Read(); |
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289 | ret = Convert.ToDouble(reader.ReadString().Trim()); |
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290 | break; |
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291 | } |
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292 | case "uuid": |
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293 | { |
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294 | if (reader.IsEmptyElement) |
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295 | { |
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296 | reader.Read(); |
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297 | return UUID.Zero; |
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298 | } |
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299 | |||
300 | reader.Read(); |
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301 | ret = new UUID(reader.ReadString().Trim()); |
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302 | break; |
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303 | } |
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304 | case "string": |
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305 | { |
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306 | if (reader.IsEmptyElement) |
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307 | { |
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308 | reader.Read(); |
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309 | return String.Empty; |
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310 | } |
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311 | |||
312 | reader.Read(); |
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313 | ret = reader.ReadString(); |
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314 | break; |
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315 | } |
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316 | case "binary": |
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317 | { |
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318 | if (reader.IsEmptyElement) |
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319 | { |
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320 | reader.Read(); |
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321 | return new byte[0]; |
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322 | } |
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323 | |||
324 | if (reader.GetAttribute("encoding") != null && |
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325 | reader.GetAttribute("encoding") != "base64") |
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326 | { |
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327 | throw new LLSDParseException("Unknown encoding: " + reader.GetAttribute("encoding")); |
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328 | } |
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329 | |||
330 | reader.Read(); |
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331 | FromBase64Transform b64 = new FromBase64Transform(FromBase64TransformMode.IgnoreWhiteSpaces); |
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332 | byte[] inp = Util.UTF8.GetBytes(reader.ReadString()); |
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333 | ret = b64.TransformFinalBlock(inp, 0, inp.Length); |
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334 | break; |
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335 | } |
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336 | case "date": |
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337 | { |
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338 | reader.Read(); |
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339 | throw new Exception("LLSD TODO: date"); |
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340 | } |
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341 | case "map": |
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342 | { |
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343 | return LLSDParseMap(reader); |
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344 | } |
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345 | case "array": |
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346 | { |
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347 | return LLSDParseArray(reader); |
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348 | } |
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349 | default: |
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350 | throw new LLSDParseException("Unknown element <" + dtype + ">"); |
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351 | } |
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352 | |||
353 | if (reader.NodeType != XmlNodeType.EndElement || reader.LocalName != dtype) |
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354 | { |
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355 | throw new LLSDParseException("Expected </" + dtype + ">"); |
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356 | } |
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357 | |||
358 | reader.Read(); |
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359 | return ret; |
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360 | } |
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361 | |||
362 | /// <summary> |
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363 | /// |
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364 | /// </summary> |
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365 | /// <param name="reader"></param> |
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366 | /// <returns></returns> |
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367 | public static Hashtable LLSDParseMap(XmlTextReader reader) |
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368 | { |
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369 | Hashtable ret = new Hashtable(); |
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370 | |||
371 | if (reader.NodeType != XmlNodeType.Element || reader.LocalName != "map") |
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372 | throw new LLSDParseException("Expected <map>"); |
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373 | |||
374 | if (reader.IsEmptyElement) |
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375 | { |
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376 | reader.Read(); |
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377 | return ret; |
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378 | } |
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379 | |||
380 | reader.Read(); |
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381 | |||
382 | while (true) |
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383 | { |
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384 | SkipWS(reader); |
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385 | if (reader.NodeType == XmlNodeType.EndElement && reader.LocalName == "map") |
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386 | { |
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387 | reader.Read(); |
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388 | break; |
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389 | } |
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390 | |||
391 | if (reader.NodeType != XmlNodeType.Element || reader.LocalName != "key") |
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392 | throw new LLSDParseException("Expected <key>"); |
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393 | |||
394 | string key = reader.ReadString(); |
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395 | |||
396 | if (reader.NodeType != XmlNodeType.EndElement || reader.LocalName != "key") |
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397 | throw new LLSDParseException("Expected </key>"); |
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398 | |||
399 | reader.Read(); |
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400 | object val = LLSDParseOne(reader); |
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401 | ret[key] = val; |
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402 | } |
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403 | |||
404 | return ret; // TODO |
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405 | } |
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406 | |||
407 | /// <summary> |
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408 | /// |
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409 | /// </summary> |
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410 | /// <param name="reader"></param> |
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411 | /// <returns></returns> |
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412 | public static ArrayList LLSDParseArray(XmlTextReader reader) |
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413 | { |
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414 | ArrayList ret = new ArrayList(); |
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415 | |||
416 | if (reader.NodeType != XmlNodeType.Element || reader.LocalName != "array") |
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417 | throw new LLSDParseException("Expected <array>"); |
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418 | |||
419 | if (reader.IsEmptyElement) |
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420 | { |
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421 | reader.Read(); |
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422 | return ret; |
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423 | } |
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424 | |||
425 | reader.Read(); |
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426 | |||
427 | while (true) |
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428 | { |
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429 | SkipWS(reader); |
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430 | |||
431 | if (reader.NodeType == XmlNodeType.EndElement && reader.LocalName == "array") |
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432 | { |
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433 | reader.Read(); |
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434 | break; |
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435 | } |
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436 | |||
437 | ret.Insert(ret.Count, LLSDParseOne(reader)); |
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438 | } |
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439 | |||
440 | return ret; // TODO |
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441 | } |
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442 | |||
443 | /// <summary> |
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444 | /// |
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445 | /// </summary> |
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446 | /// <param name="count"></param> |
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447 | /// <returns></returns> |
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448 | private static string GetSpaces(int count) |
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449 | { |
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450 | StringBuilder b = new StringBuilder(); |
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451 | for (int i = 0; i < count; i++) b.Append(" "); |
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452 | return b.ToString(); |
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453 | } |
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454 | |||
455 | /// <summary> |
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456 | /// |
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457 | /// </summary> |
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458 | /// <param name="obj"></param> |
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459 | /// <param name="indent"></param> |
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460 | /// <returns></returns> |
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461 | public static String LLSDDump(object obj, int indent) |
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462 | { |
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463 | if (obj == null) |
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464 | { |
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465 | return GetSpaces(indent) + "- undef\n"; |
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466 | } |
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467 | else if (obj is string) |
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468 | { |
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469 | return GetSpaces(indent) + "- string \"" + (string) obj + "\"\n"; |
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470 | } |
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471 | else if (obj is int) |
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472 | { |
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473 | return GetSpaces(indent) + "- integer " + obj.ToString() + "\n"; |
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474 | } |
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475 | else if (obj is double) |
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476 | { |
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477 | return GetSpaces(indent) + "- float " + obj.ToString() + "\n"; |
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478 | } |
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479 | else if (obj is UUID) |
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480 | { |
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481 | return GetSpaces(indent) + "- uuid " + ((UUID) obj).ToString() + Environment.NewLine; |
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482 | } |
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483 | else if (obj is Hashtable) |
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484 | { |
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485 | StringBuilder ret = new StringBuilder(); |
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486 | ret.Append(GetSpaces(indent) + "- map" + Environment.NewLine); |
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487 | Hashtable map = (Hashtable) obj; |
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488 | |||
489 | foreach (string key in map.Keys) |
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490 | { |
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491 | ret.Append(GetSpaces(indent + 2) + "- key \"" + key + "\"" + Environment.NewLine); |
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492 | ret.Append(LLSDDump(map[key], indent + 3)); |
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493 | } |
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494 | |||
495 | return ret.ToString(); |
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496 | } |
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497 | else if (obj is ArrayList) |
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498 | { |
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499 | StringBuilder ret = new StringBuilder(); |
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500 | ret.Append(GetSpaces(indent) + "- array\n"); |
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501 | ArrayList list = (ArrayList) obj; |
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502 | |||
503 | foreach (object item in list) |
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504 | { |
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505 | ret.Append(LLSDDump(item, indent + 2)); |
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506 | } |
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507 | |||
508 | return ret.ToString(); |
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509 | } |
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510 | else if (obj is byte[]) |
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511 | { |
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512 | return GetSpaces(indent) + "- binary\n" + Utils.BytesToHexString((byte[]) obj, GetSpaces(indent)) + |
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513 | Environment.NewLine; |
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514 | } |
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515 | else |
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516 | { |
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517 | return GetSpaces(indent) + "- unknown type " + obj.GetType().Name + Environment.NewLine; |
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518 | } |
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519 | } |
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520 | |||
521 | public static object ParseTerseLLSD(string llsd) |
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522 | { |
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523 | int notused; |
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524 | return ParseTerseLLSD(llsd, out notused); |
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525 | } |
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526 | |||
527 | public static object ParseTerseLLSD(string llsd, out int endPos) |
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528 | { |
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529 | if (llsd.Length == 0) |
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530 | { |
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531 | endPos = 0; |
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532 | return null; |
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533 | } |
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534 | |||
535 | // Identify what type of object this is |
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536 | switch (llsd[0]) |
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537 | { |
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538 | case '!': |
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539 | throw new LLSDParseException("Undefined value type encountered"); |
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540 | case '1': |
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541 | endPos = 1; |
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542 | return true; |
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543 | case '0': |
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544 | endPos = 1; |
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545 | return false; |
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546 | case 'i': |
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547 | { |
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548 | if (llsd.Length < 2) throw new LLSDParseException("Integer value type with no value"); |
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549 | int value; |
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550 | endPos = FindEnd(llsd, 1); |
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551 | |||
552 | if (Int32.TryParse(llsd.Substring(1, endPos - 1), out value)) |
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553 | return value; |
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554 | else |
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555 | throw new LLSDParseException("Failed to parse integer value type"); |
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556 | } |
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557 | case 'r': |
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558 | { |
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559 | if (llsd.Length < 2) throw new LLSDParseException("Real value type with no value"); |
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560 | double value; |
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561 | endPos = FindEnd(llsd, 1); |
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562 | |||
563 | if (Double.TryParse(llsd.Substring(1, endPos - 1), NumberStyles.Float, |
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564 | Utils.EnUsCulture.NumberFormat, out value)) |
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565 | return value; |
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566 | else |
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567 | throw new LLSDParseException("Failed to parse double value type"); |
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568 | } |
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569 | case 'u': |
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570 | { |
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571 | if (llsd.Length < 17) throw new LLSDParseException("UUID value type with no value"); |
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572 | UUID value; |
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573 | endPos = FindEnd(llsd, 1); |
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574 | |||
575 | if (UUID.TryParse(llsd.Substring(1, endPos - 1), out value)) |
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576 | return value; |
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577 | else |
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578 | throw new LLSDParseException("Failed to parse UUID value type"); |
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579 | } |
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580 | case 'b': |
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581 | //byte[] value = new byte[llsd.Length - 1]; |
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582 | // This isn't the actual binary LLSD format, just the terse format sent |
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583 | // at login so I don't even know if there is a binary type |
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584 | throw new LLSDParseException("Binary value type is unimplemented"); |
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585 | case 's': |
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586 | case 'l': |
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587 | if (llsd.Length < 2) throw new LLSDParseException("String value type with no value"); |
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588 | endPos = FindEnd(llsd, 1); |
||
589 | return llsd.Substring(1, endPos - 1); |
||
590 | case 'd': |
||
591 | // Never seen one before, don't know what the format is |
||
592 | throw new LLSDParseException("Date value type is unimplemented"); |
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593 | case '[': |
||
594 | { |
||
595 | if (llsd.IndexOf(']') == -1) throw new LLSDParseException("Invalid array"); |
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596 | |||
597 | int pos = 0; |
||
598 | ArrayList array = new ArrayList(); |
||
599 | |||
600 | while (llsd[pos] != ']') |
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601 | { |
||
602 | ++pos; |
||
603 | |||
604 | // Advance past comma if need be |
||
605 | if (llsd[pos] == ',') ++pos; |
||
606 | |||
607 | // Allow a single whitespace character |
||
608 | if (pos < llsd.Length && llsd[pos] == ' ') ++pos; |
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609 | |||
610 | int end; |
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611 | array.Add(ParseTerseLLSD(llsd.Substring(pos), out end)); |
||
612 | pos += end; |
||
613 | } |
||
614 | |||
615 | endPos = pos + 1; |
||
616 | return array; |
||
617 | } |
||
618 | case '{': |
||
619 | { |
||
620 | if (llsd.IndexOf('}') == -1) throw new LLSDParseException("Invalid map"); |
||
621 | |||
622 | int pos = 0; |
||
623 | Hashtable hashtable = new Hashtable(); |
||
624 | |||
625 | while (llsd[pos] != '}') |
||
626 | { |
||
627 | ++pos; |
||
628 | |||
629 | // Advance past comma if need be |
||
630 | if (llsd[pos] == ',') ++pos; |
||
631 | |||
632 | // Allow a single whitespace character |
||
633 | if (pos < llsd.Length && llsd[pos] == ' ') ++pos; |
||
634 | |||
635 | if (llsd[pos] != '\'') throw new LLSDParseException("Expected a map key"); |
||
636 | int endquote = llsd.IndexOf('\'', pos + 1); |
||
637 | if (endquote == -1 || (endquote + 1) >= llsd.Length || llsd[endquote + 1] != ':') |
||
638 | throw new LLSDParseException("Invalid map format"); |
||
639 | string key = llsd.Substring(pos, endquote - pos); |
||
640 | key = key.Replace("'", String.Empty); |
||
641 | pos += (endquote - pos) + 2; |
||
642 | |||
643 | int end; |
||
644 | hashtable.Add(key, ParseTerseLLSD(llsd.Substring(pos), out end)); |
||
645 | pos += end; |
||
646 | } |
||
647 | |||
648 | endPos = pos + 1; |
||
649 | return hashtable; |
||
650 | } |
||
651 | default: |
||
652 | throw new Exception("Unknown value type"); |
||
653 | } |
||
654 | } |
||
655 | |||
656 | private static int FindEnd(string llsd, int start) |
||
657 | { |
||
658 | int end = llsd.IndexOfAny(new char[] {',', ']', '}'}); |
||
659 | if (end == -1) end = llsd.Length - 1; |
||
660 | return end; |
||
661 | } |
||
662 | |||
663 | /// <summary> |
||
664 | /// |
||
665 | /// </summary> |
||
666 | /// <param name="reader"></param> |
||
667 | private static void SkipWS(XmlTextReader reader) |
||
668 | { |
||
669 | while ( |
||
670 | reader.NodeType == XmlNodeType.Comment || |
||
671 | reader.NodeType == XmlNodeType.Whitespace || |
||
672 | reader.NodeType == XmlNodeType.SignificantWhitespace || |
||
673 | reader.NodeType == XmlNodeType.XmlDeclaration) |
||
674 | { |
||
675 | reader.Read(); |
||
676 | } |
||
677 | } |
||
678 | } |
||
679 | } |