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annotate deps/Platinum/Source/Core/PltStateVariable.cpp @ 0:3425707ddbf6

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author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
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1 /*****************************************************************
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2 |
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3 | Platinum - Service State Variable
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4 |
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5 | Copyright (c) 2004-2008, Plutinosoft, LLC.
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6 | All rights reserved.
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7 | http://www.plutinosoft.com
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8 |
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9 | This program is free software; you can redistribute it and/or
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10 | modify it under the terms of the GNU General Public License
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11 | as published by the Free Software Foundation; either version 2
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12 | of the License, or (at your option) any later version.
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13 |
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14 | OEMs, ISVs, VARs and other distributors that combine and
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15 | distribute commercially licensed software with Platinum software
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16 | and do not wish to distribute the source code for the commercially
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17 | licensed software under version 2, or (at your option) any later
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18 | version, of the GNU General Public License (the "GPL") must enter
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19 | into a commercial license agreement with Plutinosoft, LLC.
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20 |
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21 | This program is distributed in the hope that it will be useful,
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22 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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24 | GNU General Public License for more details.
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25 |
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26 | You should have received a copy of the GNU General Public License
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27 | along with this program; see the file LICENSE.txt. If not, write to
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28 | the Free Software Foundation, Inc.,
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29 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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30 | http://www.gnu.org/licenses/gpl-2.0.html
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31 |
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32 ****************************************************************/
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33
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34 /*----------------------------------------------------------------------
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35 | includes
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36 +---------------------------------------------------------------------*/
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37 #include "PltStateVariable.h"
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38 #include "PltService.h"
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39 #include "PltXmlHelper.h"
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40 #include "PltUPnP.h"
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41
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42 NPT_SET_LOCAL_LOGGER("platinum.core.statevariable")
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43
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44 /*----------------------------------------------------------------------
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45 | PLT_StateVariable::PLT_StateVariable
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46 +---------------------------------------------------------------------*/
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47 PLT_StateVariable::PLT_StateVariable(PLT_Service* service) :
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48 m_Service(service),
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49 m_AllowedValueRange(NULL),
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50 m_IsSendingEventsIndirectly(true)
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51 {
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52 }
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53
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54 /*----------------------------------------------------------------------
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55 | PLT_StateVariable::~PLT_StateVariable
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56 +---------------------------------------------------------------------*/
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57 PLT_StateVariable::~PLT_StateVariable()
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58 {
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59 m_AllowedValues.Apply(NPT_ObjectDeleter<NPT_String>());
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60 if (m_AllowedValueRange) delete m_AllowedValueRange;
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61 }
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62
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63 /*----------------------------------------------------------------------
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64 | PLT_StateVariable::GetSCPDXML
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65 +---------------------------------------------------------------------*/
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66 NPT_Result
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67 PLT_StateVariable::GetSCPDXML(NPT_XmlElementNode* node)
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68 {
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69 NPT_XmlElementNode* variable = new NPT_XmlElementNode("stateVariable");
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70 NPT_CHECK_SEVERE(node->AddChild(variable));
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71
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72 NPT_CHECK_SEVERE(variable->SetAttribute("sendEvents", m_IsSendingEvents?"yes":"no"));
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73 NPT_CHECK_SEVERE(PLT_XmlHelper::AddChildText(variable, "name", m_Name));
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74 NPT_CHECK_SEVERE(PLT_XmlHelper::AddChildText(variable, "dataType", m_DataType));
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75 if (m_DefaultValue.GetLength()) {
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76 NPT_CHECK_SEVERE(PLT_XmlHelper::AddChildText(variable, "defaultValue", m_DefaultValue));
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77 }
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78
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79 if (m_AllowedValues.GetItemCount()) {
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80 NPT_XmlElementNode* allowedValueList = new NPT_XmlElementNode("allowedValueList");
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81 NPT_CHECK_SEVERE(variable->AddChild(allowedValueList));
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82 for( int l = 0 ; l < (int)m_AllowedValues.GetItemCount(); l++) {
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83 NPT_CHECK_SEVERE(PLT_XmlHelper::AddChildText(allowedValueList, "allowedValue", (*m_AllowedValues[l])));
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84 }
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85 } else if (m_AllowedValueRange) {
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86 NPT_XmlElementNode* range = new NPT_XmlElementNode("allowedValueRange");
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87 NPT_CHECK_SEVERE(variable->AddChild(range));
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88 NPT_CHECK_SEVERE(PLT_XmlHelper::AddChildText(range, "minimum", NPT_String::FromInteger(m_AllowedValueRange->min_value)));
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89 NPT_CHECK_SEVERE(PLT_XmlHelper::AddChildText(range, "maximum", NPT_String::FromInteger(m_AllowedValueRange->max_value)));
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90 if (m_AllowedValueRange->step != -1) {
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91 NPT_CHECK_SEVERE(PLT_XmlHelper::AddChildText(range, "step", NPT_String::FromInteger(m_AllowedValueRange->step)));
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92 }
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93 }
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94
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95 return NPT_SUCCESS;
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96 }
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97
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98 /*----------------------------------------------------------------------
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99 | PLT_StateVariable::GetService
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100 +---------------------------------------------------------------------*/
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101 PLT_Service*
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102 PLT_StateVariable::GetService()
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103 {
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104 return m_Service;
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105 }
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106
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107 /*----------------------------------------------------------------------
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108 | PLT_StateVariable::IsSendingEvents
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109 +---------------------------------------------------------------------*/
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110 bool
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111 PLT_StateVariable::IsSendingEvents(bool indirectly /* = false */)
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112 {
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113 if (indirectly) {
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114 return (!m_IsSendingEvents &&
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115 !m_Name.StartsWith("A_ARG_TYPE_") &&
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116 m_IsSendingEventsIndirectly);
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117 }
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118
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119 return m_IsSendingEvents;
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120 }
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121
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122 /*----------------------------------------------------------------------
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123 | PLT_StateVariable::DisableIndirectEventing
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124 +---------------------------------------------------------------------*/
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125 void
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126 PLT_StateVariable::DisableIndirectEventing()
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127 {
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128 m_IsSendingEventsIndirectly = false;
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129 }
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130
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131 /*----------------------------------------------------------------------
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132 | PLT_StateVariable::SetRate
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133 +---------------------------------------------------------------------*/
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134 NPT_Result
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135 PLT_StateVariable::SetRate(NPT_TimeInterval rate)
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136 {
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137 if (!IsSendingEvents()) return NPT_FAILURE;
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138
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139 m_Rate = rate;
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140 return NPT_SUCCESS;
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141 }
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142
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143 /*----------------------------------------------------------------------
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144 | PLT_StateVariable::SetValue
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145 +---------------------------------------------------------------------*/
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146 NPT_Result
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147 PLT_StateVariable::SetValue(const char* value)
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148 {
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149 if (value == NULL) {
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150 return NPT_FAILURE;
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151 }
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152
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153 // update only if it's different
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154 if (m_Value != value) {
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155 NPT_Result res = ValidateValue(value);
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156 if (NPT_FAILED(res)) {
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157 return res;
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158 }
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159
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160 m_Value = value;
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161 m_Service->AddChanged(this);
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162 }
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163
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164 return NPT_SUCCESS;
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165 }
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166
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167 /*----------------------------------------------------------------------
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168 | PLT_StateVariable::IsReadyToPublish
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169 +---------------------------------------------------------------------*/
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170 bool
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171 PLT_StateVariable::IsReadyToPublish()
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172 {
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173 NPT_TimeStamp now;
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174 NPT_System::GetCurrentTimeStamp(now);
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175
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176 if (m_Rate == NPT_TimeStamp() || m_LastEvent + m_Rate <= now ) {
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177 m_LastEvent = now;
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178 return true;
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179 }
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180
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181 return false;
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182 }
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183
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184 /*----------------------------------------------------------------------
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185 | PLT_StateVariable::ValidateValue
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186 +---------------------------------------------------------------------*/
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187 NPT_Result
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188 PLT_StateVariable::ValidateValue(const char* value)
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189 {
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190 if (m_DataType.Compare("string", true) == 0) {
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191 // if we have a value allowed restriction, make sure the value is in our list
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192 if (m_AllowedValues.GetItemCount()) {
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193 return m_AllowedValues.Find(NPT_StringFinder(value))?NPT_SUCCESS:NPT_FAILURE;
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194 }
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195 }
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196
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197 // TODO: there are more to it than allowed values, we need to test for range, etc..
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198 return NPT_SUCCESS;
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199 }
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200
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201 /*----------------------------------------------------------------------
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202 | PLT_StateVariable::Find
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203 +---------------------------------------------------------------------*/
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204 PLT_StateVariable*
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205 PLT_StateVariable::Find(NPT_List<PLT_StateVariable*>& vars, const char* name)
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206 {
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207 PLT_StateVariable* stateVariable = NULL;
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208 NPT_ContainerFind(vars, PLT_StateVariableNameFinder(name), stateVariable);
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209 return stateVariable;
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210 }
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211