1 /* |
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2 * Copyright (c) 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: Key - value container. |
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15 * |
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16 */ |
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17 |
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18 // INCLUDE FILES |
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19 #include <utf.h> // for unicode character conversions |
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20 #include <centralrepository.h> |
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21 #include <e32std.h> |
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22 #include "cvimpstsettingskeyvaluepair.h" |
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23 #include "vimpstsettingsstoredefinitions.h" |
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24 #include "vimpstsettingsstorecenrepuids.h" |
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25 //MACROS |
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26 |
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27 //Helper macro to check value type in data set |
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28 #define REQUIRE_SET_VALUE_TYPE( aType ) \ |
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29 { \ |
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30 TBool _settable = ( iValueType == EValueTypeNone ) || \ |
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31 ( iValueType == aType ); \ |
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32 if( !_settable )\ |
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33 {\ |
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34 return KErrGeneral;\ |
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35 }\ |
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36 } \ |
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37 |
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38 //Helper macro to check value type in data get |
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39 #define REQUIRE_GET_VALUE_TYPE( aType ) \ |
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40 { \ |
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41 if( iValueType == EValueTypeNone ) \ |
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42 { \ |
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43 return KErrNotFound; \ |
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44 } \ |
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45 TBool _readable = ( iValueType == aType ); \ |
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46 if( !_readable ) \ |
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47 { \ |
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48 return KErrGeneral; \ |
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49 } \ |
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50 } \ |
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51 |
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52 |
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53 // ================= MEMBER FUNCTIONS ======================= |
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54 |
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55 // ----------------------------------------------------------------------------- |
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56 // CVIMPSTSettingsKeyValuePair::New() |
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57 // ----------------------------------------------------------------------------- |
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58 // |
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59 CVIMPSTSettingsKeyValuePair* CVIMPSTSettingsKeyValuePair::New( const TDesC16& aKey ) |
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60 { |
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61 //Non leaving two phased constructor!!! |
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62 |
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63 CVIMPSTSettingsKeyValuePair* self = new CVIMPSTSettingsKeyValuePair; // CSI: 62 # |
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64 if( self ) |
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65 { |
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66 self->iKey = aKey.Alloc(); |
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67 if( !self->iKey ) |
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68 { |
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69 delete self; |
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70 self = NULL; |
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71 } |
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72 } |
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73 |
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74 return self; |
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75 } |
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76 |
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77 // ----------------------------------------------------------------------------- |
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78 // CVIMPSTSettingsKeyValuePair::NewLC() |
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79 // ----------------------------------------------------------------------------- |
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80 // |
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81 CVIMPSTSettingsKeyValuePair* CVIMPSTSettingsKeyValuePair::NewLC( const TDesC& aKeyValuePairFlat ) |
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82 { |
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83 CVIMPSTSettingsKeyValuePair* self = new (ELeave) CVIMPSTSettingsKeyValuePair; |
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84 CleanupStack::PushL( self ); |
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85 self->ParseFlatKeyValuePairL( aKeyValuePairFlat ); |
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86 return self; |
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87 } |
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88 |
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89 // ----------------------------------------------------------------------------- |
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90 // CVIMPSTSettingsKeyValuePair::~CVIMPSTSettingsKeyValuePair() |
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91 // Destructor |
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92 // ----------------------------------------------------------------------------- |
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93 // |
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94 CVIMPSTSettingsKeyValuePair::~CVIMPSTSettingsKeyValuePair() |
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95 { |
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96 Reset(); |
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97 } |
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98 |
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99 |
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100 // ----------------------------------------------------------------------------- |
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101 // CVIMPSTSettingsKeyValuePair::CVIMPSTSettingsKeyValuePair() |
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102 // C++ default constructor can NOT contain any code, that |
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103 // might leave. |
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104 // ----------------------------------------------------------------------------- |
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105 // |
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106 CVIMPSTSettingsKeyValuePair::CVIMPSTSettingsKeyValuePair() |
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107 : iValueType( EValueTypeNone ) |
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108 { |
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109 } |
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110 |
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111 |
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112 |
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113 // ----------------------------------------------------------------------------- |
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114 // CVIMPSTSettingsKeyValuePair::ConstructL() |
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115 // ----------------------------------------------------------------------------- |
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116 // |
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117 void CVIMPSTSettingsKeyValuePair::ConstructL( RReadStream& aStream ) |
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118 { |
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119 |
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120 //Default data |
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121 TInt keyLength = aStream.ReadInt32L(); |
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122 iKey = HBufC::NewL( keyLength ); |
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123 TPtr keyPtr( iKey->Des() ); |
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124 aStream.ReadL( keyPtr, keyLength ); |
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125 |
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126 iValueType = static_cast< TValueType > ( aStream.ReadInt8L() ); |
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127 switch( iValueType ) |
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128 { |
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129 case EValueTypeDesC16: |
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130 { |
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131 TInt descLength = aStream.ReadInt32L(); |
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132 iBuf16 = HBufC16::NewL( descLength ); |
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133 TPtr16 descPtr16( iBuf16->Des() ); |
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134 aStream.ReadL( descPtr16, descLength ); |
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135 break; |
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136 } |
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137 |
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138 //FLOW THROUGH |
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139 case EValueTypeNone: |
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140 default: |
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141 { |
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142 break; |
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143 } |
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144 }; |
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145 } |
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146 |
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147 |
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148 |
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149 // ----------------------------------------------------------------------------- |
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150 // CVIMPSTSettingsKeyValuePair::Reset() |
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151 // ----------------------------------------------------------------------------- |
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152 // |
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153 void CVIMPSTSettingsKeyValuePair::Reset() |
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154 { |
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155 switch( iValueType ) |
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156 { |
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157 case EValueTypeDesC16: |
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158 { |
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159 delete iBuf16; |
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160 iBuf16 = NULL; |
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161 break; |
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162 } |
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163 |
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164 //FLOW THROUGH |
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165 case EValueTypeNone: |
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166 default: |
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167 { |
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168 break; |
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169 } |
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170 }; |
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171 |
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172 iValueType = EValueTypeNone; |
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173 |
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174 delete iKey; |
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175 iKey = NULL; |
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176 } |
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177 |
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178 |
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179 |
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180 // ----------------------------------------------------------------------------- |
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181 // CVIMPSTUiSAPKeyValuePair::Key() |
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182 // ----------------------------------------------------------------------------- |
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183 // |
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184 const TDesC& CVIMPSTSettingsKeyValuePair::Key() const |
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185 { |
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186 return *iKey; |
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187 } |
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188 |
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189 // ----------------------------------------------------------------------------- |
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190 // CVIMPSTSettingsKeyValuePair::SetValue() |
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191 // ----------------------------------------------------------------------------- |
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192 // |
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193 TInt CVIMPSTSettingsKeyValuePair::SetValue( const TDesC16& aValue ) |
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194 { |
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195 REQUIRE_SET_VALUE_TYPE( EValueTypeDesC16 ) |
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196 |
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197 // Allocate memory for the new value |
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198 HBufC16* tmp = aValue.Alloc(); |
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199 if( !tmp ) |
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200 { |
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201 return KErrNoMemory; |
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202 } |
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203 |
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204 // Swap pointers |
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205 HBufC16* tmp2( NULL ); |
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206 tmp2 = iBuf16; |
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207 iBuf16 = tmp; |
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208 iValueType = EValueTypeDesC16; |
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209 |
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210 TBool dataTooBig( IsDataTooBig() ); |
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211 TInt err( KErrNone ); |
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212 |
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213 // Rollback if data too bog |
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214 if( dataTooBig ) |
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215 { |
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216 iBuf16 = tmp2; |
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217 delete tmp; |
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218 err = KErrTooBig; |
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219 } |
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220 // Otherwise delete the old value |
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221 else |
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222 { |
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223 delete tmp2; |
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224 } |
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225 return err; |
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226 } |
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227 |
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228 |
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229 // ----------------------------------------------------------------------------- |
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230 // CVIMPSTSettingsKeyValuePair::GetValue() |
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231 // ----------------------------------------------------------------------------- |
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232 // |
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233 TInt CVIMPSTSettingsKeyValuePair::GetValue( TPtrC16& aValue ) const |
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234 { |
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235 REQUIRE_GET_VALUE_TYPE( EValueTypeDesC16 ) |
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236 |
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237 aValue.Set( *iBuf16 ); |
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238 return KErrNone; |
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239 } |
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240 |
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241 // ----------------------------------------------------------------------------- |
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242 // CVIMPSTSettingsKeyValuePair::KeyValuePairFlatLC() |
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243 // ----------------------------------------------------------------------------- |
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244 // |
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245 |
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246 HBufC* CVIMPSTSettingsKeyValuePair::KeyValuePairFlatLC() |
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247 { |
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248 |
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249 // reserve memory for 2 field separators |
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250 HBufC* flatBuf = HBufC::NewLC( NCentralRepositoryConstants::KMaxUnicodeStringLength ); |
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251 |
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252 TPtr flatBufPtr( flatBuf->Des() ); |
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253 |
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254 flatBufPtr.Append( *iKey ); |
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255 flatBufPtr.Append( KKeyValuePairFieldSeparator ); |
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256 flatBufPtr.AppendNum( iValueType, EDecimal ); |
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257 flatBufPtr.Append( KKeyValuePairFieldSeparator ); |
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258 |
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259 switch( iValueType ) |
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260 { |
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261 case EValueTypeDesC16: |
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262 { |
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263 flatBufPtr.Append( *iBuf16 ); |
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264 break; |
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265 } |
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266 |
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267 //FLOW THROUGH |
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268 case EValueTypeNone: |
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269 default: |
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270 { |
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271 break; |
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272 } |
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273 }; |
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274 return flatBuf; |
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275 } |
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276 |
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277 // ----------------------------------------------------------------------------- |
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278 // CVIMPSTSettingsKeyValuePair::IsDataTooBig() |
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279 // ----------------------------------------------------------------------------- |
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280 // |
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281 TBool CVIMPSTSettingsKeyValuePair::IsDataTooBig() const |
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282 { |
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283 return ( DataSizeDec() > ( NCentralRepositoryConstants::KMaxUnicodeStringLength - |
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284 2*KKeyValuePairFieldSeparator().Length() - 1) ); |
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285 } |
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286 |
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287 |
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288 // ----------------------------------------------------------------------------- |
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289 // CVIMPSTSettingsKeyValuePair::DataSizeDec() |
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290 // ----------------------------------------------------------------------------- |
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291 // |
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292 TInt CVIMPSTSettingsKeyValuePair::DataSizeDec() const |
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293 { |
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294 TInt dataSize( iKey->Length() ); |
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295 |
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296 switch( iValueType ) |
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297 { |
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298 case EValueTypeDesC16: |
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299 { |
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300 dataSize += iBuf16->Length(); |
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301 break; |
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302 } |
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303 |
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304 //FLOW THROUGH |
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305 case EValueTypeNone: |
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306 default: |
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307 { |
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308 break; |
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309 } |
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310 }; |
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311 |
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312 return dataSize; |
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313 } |
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314 |
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315 |
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316 // ----------------------------------------------------------------------------- |
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317 // CVIMPSTSettingsKeyValuePair::ParseFlatKeyValuePairL() |
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318 // ----------------------------------------------------------------------------- |
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319 // |
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320 |
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321 void CVIMPSTSettingsKeyValuePair::ParseFlatKeyValuePairL( const TDesC& aKeyValuePairFlat ) |
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322 { |
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323 TInt offset( aKeyValuePairFlat.Find( KKeyValuePairFieldSeparator ) ); |
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324 TInt offset2( aKeyValuePairFlat.Mid( offset + |
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325 KKeyValuePairFieldSeparator().Length() ).Find( |
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326 KKeyValuePairFieldSeparator ) |
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327 ); |
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328 |
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329 if( ( offset == KErrNotFound ) || ( offset2 == KErrNotFound ) ) |
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330 { |
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331 //Incorrect format, leave |
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332 User::Leave( KErrNotFound ); |
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333 } |
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334 |
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335 TPtrC key( aKeyValuePairFlat.Left( offset ) ); |
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336 |
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337 iKey = key.AllocL(); |
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338 |
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339 TPtrC valueType( aKeyValuePairFlat.Mid( offset + |
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340 KKeyValuePairFieldSeparator().Length(), offset2 ) ); |
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341 TLex lexer( valueType ); |
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342 TInt valueTypeInt( 0 ); |
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343 User::LeaveIfError( lexer.Val( valueTypeInt ) ); |
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344 TPtrC value( aKeyValuePairFlat.Mid(offset + offset2 + |
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345 2*KKeyValuePairFieldSeparator().Length() ) ); // skip 2 separators |
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346 switch( valueTypeInt ) |
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347 { |
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348 case EValueTypeDesC16: |
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349 { |
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350 User::LeaveIfError( SetValue( value ) ); |
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351 break; |
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352 } |
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353 |
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354 //FLOW THROUGH |
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355 case EValueTypeNone: |
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356 default: |
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357 { |
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358 break; |
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359 } |
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360 } |
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361 } |
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362 // End of File |
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363 |
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