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1 /* |
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2 * Copyright (c) 2009 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: Special AT command handler |
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15 * |
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16 */ |
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17 |
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18 #include "DunAtSpecialCmdHandler.h" |
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19 #include "DunDebug.h" |
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20 |
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21 // AT command(s) below is part of the AT&FE0Q0V1&C1&D2+IFC=3,1. command which |
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22 // is sent by MAC |
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23 _LIT8(KSpecialATCmd1, "AT&F"); |
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24 // Number of special commands |
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25 const TInt KDefaultGranularity = 1; |
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26 |
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27 // --------------------------------------------------------------------------- |
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28 // Two-phased constructor. |
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29 // --------------------------------------------------------------------------- |
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30 // |
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31 CDunAtSpecialCmdHandler* CDunAtSpecialCmdHandler::NewL() |
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32 { |
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33 CDunAtSpecialCmdHandler* self = new (ELeave) CDunAtSpecialCmdHandler(); |
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34 CleanupStack::PushL( self ); |
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35 self->ConstructL(); |
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36 CleanupStack::Pop( self ); |
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37 return self; |
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38 } |
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39 |
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40 // --------------------------------------------------------------------------- |
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41 // CDunAtSpecialCmdHandler::CDunAtSpecialCmdHandler |
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42 // --------------------------------------------------------------------------- |
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43 // |
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44 CDunAtSpecialCmdHandler::CDunAtSpecialCmdHandler() |
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45 { |
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46 } |
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47 |
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48 // --------------------------------------------------------------------------- |
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49 // CDunAtSpecialCmdHandler::ConstructL |
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50 // --------------------------------------------------------------------------- |
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51 // |
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52 void CDunAtSpecialCmdHandler::ConstructL() |
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53 { |
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54 iSpecialCmds = new (ELeave) CDesC8ArrayFlat(KDefaultGranularity); |
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55 // Add here all special commands which need to be handled |
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56 iSpecialCmds->AppendL(KSpecialATCmd1); |
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57 } |
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58 |
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59 // --------------------------------------------------------------------------- |
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60 // Destructor. |
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61 // --------------------------------------------------------------------------- |
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62 // |
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63 CDunAtSpecialCmdHandler::~CDunAtSpecialCmdHandler() |
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64 { |
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65 FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::~CDunAtSpecialCmdHandler()") )); |
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66 delete iSpecialCmds; |
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67 FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::~CDunAtSpecialCmdHandler() complete") )); |
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68 } |
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69 |
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70 // --------------------------------------------------------------------------- |
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71 // Checks if the command has to be treated special way |
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72 // For example in case of MAC, it sends command AT&FE0Q0V1&C1&D2+IFC=3,1. |
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73 // meaning there is no delimiters in the command. |
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74 // In case of MAC we try to search AT&F (sub command) string from the beginning |
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75 // of the command. |
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76 // Search is done character by character basis. |
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77 // --------------------------------------------------------------------------- |
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78 // |
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79 TBool CDunAtSpecialCmdHandler::IsCompleteSubCommand (TChar aCharacter) |
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80 { |
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81 FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand()") )); |
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82 iBuffer.Append(aCharacter); |
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83 TBool completeSubCmd = EFalse; |
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84 |
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85 if( !IsDataReadyForComparison( iBuffer.Length()) ) |
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86 { |
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87 // No need to do comparison because we don't have correct amount of data |
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88 FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand(), no need to compare") )); |
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89 return completeSubCmd; |
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90 } |
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91 |
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92 TInt count = iSpecialCmds->Count(); |
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93 for( TInt i = 0 ; i < count ; i++ ) |
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94 { |
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95 if( iSpecialCmds->MdcaPoint(i).Compare(iBuffer) == 0 ) |
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96 { |
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97 FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand(), match found, cmd index %d"), i )); |
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98 // Reset internal buffer for next comparison. |
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99 iBuffer.FillZ(); |
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100 iBuffer.Zero(); |
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101 completeSubCmd = ETrue; |
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102 break; |
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103 } |
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104 } |
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105 FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand() complete") )); |
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106 return completeSubCmd; |
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107 } |
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108 |
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109 // --------------------------------------------------------------------------- |
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110 // Checks if the command has to be treated special way |
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111 // For example in case of MAC, it sends command AT&FE0Q0V1&C1&D2+IFC=3,1. |
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112 // meaning there is no delimiters in the command. |
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113 // In case of MAC we try to search AT&F (sub command) string from the beginning |
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114 // of the command. |
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115 // Search is done string basis. |
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116 // --------------------------------------------------------------------------- |
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117 // |
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118 TBool CDunAtSpecialCmdHandler::IsCompleteSubCommand(TDesC8& aDes, TInt aStartIndex, TInt& aEndIndex) |
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119 { |
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120 FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand()") )); |
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121 TBool completeSubCmd = EFalse; |
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122 if( aDes.Length() < MinimumLength() || aStartIndex != 0 ) |
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123 { |
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124 // No need to do comparison because we don't have correct amount of data or |
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125 // we are not at the beginning of the input buffer (non decoded buffer) |
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126 FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand(), no need to compare") )); |
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127 return completeSubCmd; |
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128 } |
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129 |
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130 TInt count = iSpecialCmds->Count(); |
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131 for( TInt i = 0 ; i < count ; i++ ) |
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132 { |
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133 TInt length = iSpecialCmds->MdcaPoint(i).Length(); |
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134 TPtrC8 cmd = aDes.Mid(0, length); |
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135 if( iSpecialCmds->MdcaPoint(i).Compare(cmd) == 0 ) |
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136 { |
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137 FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand(), match found, cmd index %d"), i )); |
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138 aEndIndex = length - 1; |
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139 completeSubCmd = ETrue; |
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140 break; |
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141 } |
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142 } |
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143 FTRACE(FPrint( _L("CDunAtSpecialCmdHandler::IsCompleteSubCommand() complete") )); |
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144 return completeSubCmd; |
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145 } |
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146 |
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147 // --------------------------------------------------------------------------- |
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148 // Defines when comparison is excecuted, checks if the data lengths are equal. |
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149 // --------------------------------------------------------------------------- |
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150 // |
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151 TBool CDunAtSpecialCmdHandler::IsDataReadyForComparison(TInt aLength) |
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152 { |
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153 TInt count = iSpecialCmds->Count(); |
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154 for( TInt i = 0 ; i < count ; i++ ) |
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155 { |
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156 if( iSpecialCmds->MdcaPoint(i).Length() == aLength ) |
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157 { |
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158 return ETrue; |
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159 } |
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160 } |
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161 return EFalse; |
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162 } |
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163 |
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164 // --------------------------------------------------------------------------- |
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165 // Defines minimum length of the special commands. |
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166 // --------------------------------------------------------------------------- |
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167 // |
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168 TInt CDunAtSpecialCmdHandler::MinimumLength() |
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169 { |
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170 TInt length = iSpecialCmds->MdcaPoint(0).Length(); |
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171 TInt count = iSpecialCmds->Count(); |
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172 for( TInt i = 1 ; i < count ; i++ ) |
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173 { |
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174 if( iSpecialCmds->MdcaPoint(i).Length() < length ) |
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175 { |
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176 length = iSpecialCmds->MdcaPoint(i).Length(); |
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177 break; |
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178 } |
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179 } |
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180 return length; |
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181 } |