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1 /* |
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2 * Copyright (c) 2005-2009 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: |
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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 /************************************************************************* |
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21 * |
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22 * System Includes |
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23 * |
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24 *************************************************************************/ |
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25 |
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26 /************************************************************************* |
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27 * |
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28 * Local Includes |
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29 * |
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30 *************************************************************************/ |
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31 |
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32 #include "datasupplier_memory.h" |
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33 |
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34 /************************************************************************* |
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35 * |
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36 * Definitions |
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37 * |
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38 *************************************************************************/ |
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39 |
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40 /************************************************************************* |
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41 * |
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42 * CDataSupplierMemory - Construction |
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43 * |
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44 *************************************************************************/ |
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45 CDataSupplierMemory *CDataSupplierMemory::NewL() |
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46 { |
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47 CDataSupplierMemory *self = new (ELeave) CDataSupplierMemory(); |
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48 |
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49 CleanupStack::PushL(self); |
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50 |
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51 self->ConstructL(); |
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52 |
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53 CleanupStack::Pop(); |
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54 |
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55 return self; |
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56 } |
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57 |
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58 CDataSupplierMemory::CDataSupplierMemory() : CBase(), |
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59 iDataBuffer( NULL ), iCurrentLocation( 0 ) |
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60 { |
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61 ; |
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62 } |
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63 |
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64 void CDataSupplierMemory::ConstructL( void ) |
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65 { |
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66 iLock.CreateLocal( EOwnerProcess ); |
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67 } |
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68 |
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69 CDataSupplierMemory::~CDataSupplierMemory( ) |
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70 { |
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71 iLock.Wait( ); |
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72 { |
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73 delete iDataBuffer; |
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74 iDataBuffer = NULL; |
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75 iCurrentLocation = 0; |
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76 |
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77 iLock.Close( ); |
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78 } |
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79 } |
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80 |
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81 /************************************************************************* |
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82 * |
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83 * CDataSupplierMemory - Public interface |
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84 * |
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85 *************************************************************************/ |
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86 |
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87 /************************************************************************* |
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88 * |
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89 * Delete |
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90 * |
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91 *************************************************************************/ |
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92 |
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93 void CDataSupplierMemory::Delete( void ) |
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94 { |
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95 delete this; |
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96 } |
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97 |
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98 /************************************************************************* |
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99 * |
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100 * GetTotalSize |
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101 * |
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102 *************************************************************************/ |
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103 |
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104 TInt CDataSupplierMemory::GetTotalSize( TInt &aTotalSize ) |
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105 { |
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106 TInt err = KErrNone; |
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107 TInt size = 0; |
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108 |
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109 iLock.Wait( ); |
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110 { |
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111 size = iDataBuffer->Length( ); |
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112 |
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113 aTotalSize = size; |
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114 |
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115 iLock.Signal( ); |
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116 } |
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117 |
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118 return ( err ); |
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119 } |
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120 |
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121 /************************************************************************* |
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122 * |
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123 * GetRemainingSize |
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124 * |
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125 *************************************************************************/ |
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126 |
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127 TInt CDataSupplierMemory::GetRemainingSize( TInt &aRemainingSize ) |
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128 { |
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129 TInt err = KErrNone; |
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130 TInt remaining = 0; |
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131 |
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132 iLock.Wait( ); |
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133 { |
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134 TInt totalSize = 0; |
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135 |
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136 err = GetTotalSize( totalSize ); |
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137 |
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138 if( err == KErrNone ) |
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139 { |
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140 remaining = totalSize - iCurrentLocation; |
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141 |
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142 aRemainingSize = remaining; |
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143 } |
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144 |
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145 iLock.Signal( ); |
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146 } |
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147 |
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148 return ( err ); |
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149 } |
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150 |
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151 /************************************************************************* |
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152 * |
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153 * SetData |
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154 * |
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155 *************************************************************************/ |
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156 |
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157 TInt CDataSupplierMemory::SetData( const TDesC8 &aSource ) |
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158 { |
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159 TInt err = KErrNone; |
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160 |
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161 iLock.Wait( ); |
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162 { |
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163 delete iDataBuffer; |
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164 iDataBuffer = NULL; |
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165 |
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166 TInt length = aSource.Length( ); |
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167 iDataBuffer = HBufC8::New( length ); |
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168 |
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169 if(iDataBuffer) |
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170 { |
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171 *iDataBuffer = aSource; |
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172 } |
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173 else |
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174 { |
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175 err = KErrNoMemory; |
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176 } |
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177 |
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178 iCurrentLocation = 0; |
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179 iLock.Signal( ); |
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180 } |
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181 |
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182 #ifdef _DEBUG |
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183 { |
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184 TInt totalSize = 0; |
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185 GetTotalSize( totalSize ); |
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186 TInt remainingSize = 0; |
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187 GetRemainingSize( remainingSize ); |
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188 } |
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189 #endif |
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190 |
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191 return ( err ); |
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192 } |
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193 |
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194 /************************************************************************* |
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195 * |
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196 * GetData |
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197 * |
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198 *************************************************************************/ |
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199 |
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200 TInt CDataSupplierMemory::GetData( HBufC8 &aDestination, |
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201 TInt aLengthToCopy, TInt &aActuallyCopied ) |
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202 { |
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203 TInt err = KErrNone; |
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204 |
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205 iLock.Wait( ); |
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206 { |
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207 TInt remainingSize = 0; |
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208 err = GetRemainingSize( remainingSize ); |
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209 |
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210 if( err == KErrNone ) |
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211 { |
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212 TInt toCopy = Min( aLengthToCopy, remainingSize ); |
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213 |
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214 TPtr8 destPtr( aDestination.Des( ) ); |
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215 destPtr.Copy( iDataBuffer->Ptr( ) + iCurrentLocation, |
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216 toCopy ); |
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217 |
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218 if( err == KErrNone ) |
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219 { |
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220 iCurrentLocation += toCopy; |
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221 aActuallyCopied = toCopy; |
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222 } |
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223 } |
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224 |
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225 iLock.Signal( ); |
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226 } |
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227 |
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228 return ( err ); |
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229 } |