1 /* |
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2 * Copyright (c) 2002-2004 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Implementation of RPhCltEmergencyCall class. |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 // INCLUDE FILES |
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21 #include <cphcltemergencycall.h> // for TPhCltEmergencyNumber |
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22 #include "rphcltemergencycall.h" |
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23 #include "phcltclientserver.h" |
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24 #include "phcltutils.h" |
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25 |
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26 // CONSTANTS |
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27 _LIT( KPhCltDtmfCharp, "p" ); |
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28 _LIT( KPhCltDtmfCharw, "w" ); |
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29 _LIT( KPhCltSsCLIRSuppress, "*31#" ); // Outgoing CLI Release (release) |
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30 _LIT( KPhCltSsCLIRInvoke, "#31#" ); // Outgoing CLI Release (withhold) |
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31 |
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32 // Emergency number (number part) max size |
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33 const TInt KPhCltMaxEmergencyNumberLength = 6; |
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34 // Min length of CLIR |
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35 const TInt KPhCltMinSsStringLength = 4; |
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36 |
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37 // ============================ MEMBER FUNCTIONS =============================== |
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38 |
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39 // ----------------------------------------------------------------------------- |
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40 // RPhCltEmergencyCall::RPhCltEmergencyCall |
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41 // C++ constructor can NOT contain any code, that |
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42 // might leave. |
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43 // ----------------------------------------------------------------------------- |
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44 // |
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45 RPhCltEmergencyCall::RPhCltEmergencyCall() |
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46 : RSubSessionBase() |
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47 { |
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48 } |
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49 |
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50 // ----------------------------------------------------------------------------- |
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51 // RPhCltEmergencyCall::Open |
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52 // |
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53 // Creates a subsession, as part of the given session. |
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54 // ----------------------------------------------------------------------------- |
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55 // |
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56 TInt RPhCltEmergencyCall::Open( RPhCltServer& aServer ) |
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57 { |
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58 __ASSERT_ALWAYS( aServer.Handle(), User::Panic( |
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59 KPhClientPanicCategory, |
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60 EPhCltClientSidePanicNullHandle ) ); |
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61 |
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62 return CreateSubSession( |
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63 aServer, |
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64 EPhoneServerEmergencyNumberSubSessionOpen, |
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65 TIpcArgs() ); |
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66 } |
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67 |
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68 // ----------------------------------------------------------------------------- |
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69 // RPhCltEmergencyCall::Close |
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70 // |
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71 // Closes the subsession. |
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72 // ----------------------------------------------------------------------------- |
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73 // |
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74 void RPhCltEmergencyCall::Close() |
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75 { |
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76 CloseSubSession( EPhoneServerEmergencyNumberSubSessionClose ); |
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77 } |
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78 |
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79 // ----------------------------------------------------------------------------- |
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80 // RPhCltEmergencyCall::IsEmergenyPhoneNumber |
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81 // |
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82 // Checks if telephonenumber is an emergency number. |
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83 // ----------------------------------------------------------------------------- |
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84 // |
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85 TInt RPhCltEmergencyCall::IsEmergencyPhoneNumber( |
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86 const TDesC& aNumber, |
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87 TBool& aIsEmergencyNumber ) |
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88 { |
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89 aIsEmergencyNumber = EFalse; |
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90 TPhCltEmergencyNumber emNumber; |
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91 |
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92 // Maximum total number size check |
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93 if ( aNumber.Length() > KPhCltEmergencyNumberSize ) |
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94 { |
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95 return KErrArgument; |
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96 } |
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97 |
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98 emNumber.Copy( aNumber ); |
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99 TBool writeEmergencyNumberBack( EFalse ); |
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100 |
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101 // Actual check if the number provided is a valid emergency number |
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102 TInt result = ValidateNumber( emNumber, aIsEmergencyNumber, |
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103 writeEmergencyNumberBack ); |
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104 |
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105 return result; |
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106 } |
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107 |
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108 // ----------------------------------------------------------------------------- |
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109 // RPhCltEmergencyCall::IsEmergenyPhoneNumber |
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110 // |
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111 // Checks if telephonenumber is an emergency number. |
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112 // ----------------------------------------------------------------------------- |
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113 // |
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114 TInt RPhCltEmergencyCall::IsEmergencyPhoneNumber( |
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115 const TDesC& aNumber, |
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116 TDes& aMatchedEmergencyNumber, |
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117 TBool& aIsEmergencyNumber ) |
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118 { |
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119 aIsEmergencyNumber = EFalse; |
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120 |
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121 // Maximum total number size check |
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122 if ( aNumber.Length() > KPhCltEmergencyNumberSize ) |
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123 { |
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124 return KErrArgument; |
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125 } |
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126 |
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127 aMatchedEmergencyNumber.Copy( aNumber ); |
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128 TBool writeEmergencyNumberBack( ETrue ); |
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129 |
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130 // Actual check if the number provided is a valid emergency number |
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131 TInt result = ValidateNumber( aMatchedEmergencyNumber, aIsEmergencyNumber, |
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132 writeEmergencyNumberBack ); |
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133 |
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134 // Reset the matched number, if no match was found |
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135 if ( !aIsEmergencyNumber ) |
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136 { |
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137 aMatchedEmergencyNumber = KNullDesC; |
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138 } |
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139 |
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140 return result; |
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141 } |
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142 |
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143 // ----------------------------------------------------------------------------- |
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144 // RPhCltEmergencyCall::FindEmergencyPhoneNumber |
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145 // |
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146 // Checks if telephonenumber is an emergency number. |
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147 // Found emergency number returned |
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148 // ----------------------------------------------------------------------------- |
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149 // |
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150 TInt RPhCltEmergencyCall::FindEmergencyPhoneNumber( |
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151 TDes& aNumber, |
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152 TBool& aIsEmergencyNumber ) |
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153 { |
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154 TPckg< TBool > pIsEmergencyNumber( aIsEmergencyNumber ); |
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155 |
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156 if ( aNumber.Length() > KPhCltTelephoneNumberLength ) |
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157 { |
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158 return KErrArgument; |
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159 } |
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160 |
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161 TPckg< TPhCltTelephoneNumber > pNumber( |
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162 static_cast<TPhCltTelephoneNumber&>( aNumber ) ); |
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163 |
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164 return SendReceive( |
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165 EPhoneServerEmergencyNumberSubSessionIsEmergencyNumber, |
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166 TIpcArgs( |
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167 &pNumber, |
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168 &pIsEmergencyNumber, |
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169 EPhCltEmergencyNumberQueryModeAdvanced ) ); |
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170 } |
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171 |
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172 // ----------------------------------------------------------------------------- |
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173 // RPhCltEmergencyCall::DialEmergencyCall |
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174 // |
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175 // Sends a dial request to the server. |
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176 // ----------------------------------------------------------------------------- |
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177 // |
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178 void RPhCltEmergencyCall::DialEmergencyCall( |
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179 TRequestStatus& aReqStatus, |
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180 TDesC8& aNumber ) |
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181 { |
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182 return SendReceive( |
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183 EPhoneServerEmergencyNumberSubsessionEmergencyDial, |
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184 TIpcArgs( &aNumber ), |
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185 aReqStatus ); |
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186 } |
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187 |
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188 // ----------------------------------------------------------------------------- |
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189 // RPhCltEmergencyCall::CancelDialEmergencyCall |
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190 // |
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191 // Cancels an emergency call. |
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192 // ----------------------------------------------------------------------------- |
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193 // |
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194 void RPhCltEmergencyCall::CancelDialEmergencyCall() |
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195 { |
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196 SendReceive( |
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197 EPhoneServerEmergencyNumberSubsessionEmergencyDialCancel, |
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198 TIpcArgs() ); |
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199 } |
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200 |
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201 // ----------------------------------------------------------------------------- |
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202 // Extracts telephone number out of string. Valid emergency number can |
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203 // have CLIR SS code and DTMF in it. |
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204 // ----------------------------------------------------------------------------- |
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205 // |
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206 TBool RPhCltEmergencyCall::ExtractTelephoneNumber( TDes& aString ) |
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207 { |
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208 // Emergency number may contain CLIR ss code, so remove |
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209 // possible CLIR code from the number. |
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210 RemoveCLIR( aString ); |
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211 |
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212 // Emergency number may contain DTMF. |
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213 RemoveDTMF( aString ); |
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214 |
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215 if ( aString.Length() ) |
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216 { |
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217 // First character in emergency can be +, but after that all characters must be digits. |
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218 const TChar KPlusChar = '+'; |
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219 TChar firstCharacter = aString[0]; |
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220 if ( firstCharacter == KPlusChar ) |
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221 { |
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222 aString = aString.Right( aString.Length()-1 ); |
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223 } |
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224 |
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225 // Number should be only digits. |
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226 for ( TInt i = 0; i < aString.Length(); i++ ) |
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227 { |
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228 TChar character = aString[i]; |
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229 if ( !character.IsDigit() ) |
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230 { |
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231 return EFalse; |
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232 } |
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233 } |
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234 } |
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235 |
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236 // This might be a valid emergency number. Final check is |
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237 // done by EnPolicy. |
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238 if ( aString.Length() ) |
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239 { |
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240 return ETrue; |
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241 } |
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242 // If string length is zero after parsing, no reason to check it |
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243 // with EnPolicy, jus return EFalse. |
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244 else |
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245 { |
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246 return EFalse; |
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247 } |
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248 |
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249 } |
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250 |
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251 // ----------------------------------------------------------------------------- |
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252 // Finds start of DTMF string. DTMF string starts with p or w character. |
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253 // ----------------------------------------------------------------------------- |
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254 // |
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255 TInt RPhCltEmergencyCall::FindStartOfDtmfString( const TDesC& aString ) |
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256 { |
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257 // If string contains 'p' or 'w' returns true. |
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258 TInt indexp; //char 'p' index |
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259 TInt indexw;// char 'w' index |
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260 TPtrC ptrDtmfCharp( KPhCltDtmfCharp ); |
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261 TPtrC ptrDtmfCharw( KPhCltDtmfCharw ); |
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262 |
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263 indexp = aString.Locate( ptrDtmfCharp[ 0 ] ); |
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264 indexw = aString.Locate( ptrDtmfCharw[ 0 ] ); |
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265 |
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266 TInt dtmfIndex = KErrNotFound; |
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267 if ( indexp != KErrNotFound || indexw != KErrNotFound ) |
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268 { |
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269 // dtmf char found |
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270 if ( indexw == KErrNotFound ) |
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271 { |
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272 // char p index |
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273 dtmfIndex = indexp; |
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274 } |
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275 else if ( indexp == KErrNotFound ) |
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276 { |
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277 // char w index |
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278 dtmfIndex = indexw; |
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279 } |
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280 else |
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281 { |
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282 // Both chars p and w found, smaller index selected |
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283 indexp < indexw ? dtmfIndex = indexp : dtmfIndex = indexw; |
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284 } |
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285 } |
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286 |
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287 return dtmfIndex; |
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288 } |
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289 |
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290 // ----------------------------------------------------------------------------- |
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291 // Removes CLIR SS code |
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292 // ----------------------------------------------------------------------------- |
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293 // |
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294 void RPhCltEmergencyCall::RemoveCLIR( TDes& aString ) |
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295 { |
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296 |
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297 // Check for valid SS codes. Compare returns zero if strings match. |
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298 if ( !aString.Left( KPhCltMinSsStringLength ).Compare( KPhCltSsCLIRInvoke ) || |
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299 !aString.Left( KPhCltMinSsStringLength ).Compare( KPhCltSsCLIRSuppress ) ) |
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300 { |
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301 // Extract string after the CLIR ss code. |
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302 aString = aString.Right( aString.Length() - KPhCltSsCLIRInvoke().Length() ); |
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303 } |
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304 } |
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305 |
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306 // ----------------------------------------------------------------------------- |
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307 // Removes DTMF from string. |
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308 // ----------------------------------------------------------------------------- |
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309 // |
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310 void RPhCltEmergencyCall::RemoveDTMF( TDes& aString ) |
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311 { |
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312 const TInt dtmfIndex = FindStartOfDtmfString( aString ); |
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313 if ( dtmfIndex != KErrNotFound ) |
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314 { |
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315 aString = aString.Left( dtmfIndex ); |
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316 } |
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317 } |
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318 |
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319 // ----------------------------------------------------------------------------- |
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320 // RPhCltEmergencyCall::ValidateNumber |
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321 // |
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322 // ----------------------------------------------------------------------------- |
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323 // |
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324 TInt RPhCltEmergencyCall::ValidateNumber( TDes& aString, |
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325 TBool& aIsEmergencyNumber, |
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326 const TBool aWriteEmergencyNumBack ) |
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327 { |
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328 TPckg<TBool> pIsEmergencyNumber( aIsEmergencyNumber ); |
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329 |
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330 // Check and remove additional characters from the phone number |
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331 TBool isPotentialEmNumber = ExtractTelephoneNumber( aString ); |
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332 |
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333 // Pass the number on to EnPolicy for further check |
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334 if ( isPotentialEmNumber ) |
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335 { |
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336 // Maximum length of digit part check |
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337 if ( aString.Length() > KPhCltMaxEmergencyNumberLength ) |
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338 { |
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339 return KErrArgument; |
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340 } |
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341 |
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342 // Use write-back mode if requested |
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343 if ( aWriteEmergencyNumBack ) |
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344 { |
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345 TPckg< TPhCltTelephoneNumber > pNumber( |
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346 static_cast<TPhCltTelephoneNumber&>( aString ) ); |
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347 return SendReceive( |
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348 EPhoneServerEmergencyNumberSubSessionIsEmergencyNumber, |
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349 TIpcArgs( |
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350 &pNumber, |
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351 &pIsEmergencyNumber, |
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352 EPhCltEmergencyNumberQueryModeNormalWriteback ) ); |
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353 } |
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354 // Else use the normal mode |
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355 else |
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356 { |
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357 TPckgC<TPhCltEmergencyNumber> pNumber( aString ); |
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358 return SendReceive( |
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359 EPhoneServerEmergencyNumberSubSessionIsEmergencyNumber, |
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360 TIpcArgs( |
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361 &pNumber, |
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362 &pIsEmergencyNumber, |
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363 EPhCltEmergencyNumberQueryModeNormal ) ); |
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364 } |
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365 } |
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366 else |
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367 { |
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368 return KErrNone; |
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369 } |
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370 } |
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371 |
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372 // End of File |
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373 |
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