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1 /* |
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2 * Copyright (c) 2008 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 ChspsLogBus. |
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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 #include "hspslogbus.h" |
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20 |
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21 #ifdef HSPS_BUILD_LOG_IMPLEMENTATION |
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22 const TInt KMessageGranularity = 256; // initial size and grow-by factor. |
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23 const TInt KMessageSanityLimit = 16384; // 16kb. |
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24 _LIT( KLogError, "Warning: Logging failed." ); |
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25 const TInt KDefaultMaxLineLen = 128; |
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26 #endif |
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27 |
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28 //---------------------------------------------------------------------------- |
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29 // ChspsLogBus::~ChspsLogBus |
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30 // ---------------------------------------------------------------------------- |
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31 // |
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32 EXPORT_C ChspsLogBus::~ChspsLogBus() |
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33 { |
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34 } |
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35 |
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36 //---------------------------------------------------------------------------- |
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37 // ChspsLogBus::LogText |
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38 // ---------------------------------------------------------------------------- |
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39 // |
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40 #ifdef HSPS_BUILD_LOG_IMPLEMENTATION |
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41 EXPORT_C void ChspsLogBus::LogText( TRefByValue<const TDesC16> aFmt, ... ) |
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42 { |
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43 VA_LIST list; |
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44 VA_START( list, aFmt ); |
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45 |
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46 HBufC* formatted = FormatMessage( aFmt, list ); |
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47 if( formatted ) |
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48 { |
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49 CropAndLogText( *formatted ); |
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50 delete formatted; |
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51 formatted = NULL; |
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52 } |
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53 else |
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54 { |
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55 _LogText( KLogError() ); |
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56 } |
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57 |
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58 VA_END( list ); |
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59 } |
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60 #else |
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61 EXPORT_C void ChspsLogBus::LogText( TRefByValue<const TDesC16> /*aFmt*/, ... ) |
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62 { |
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63 } |
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64 #endif |
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65 |
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66 //---------------------------------------------------------------------------- |
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67 // ChspsLogBus::LogText |
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68 // ---------------------------------------------------------------------------- |
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69 // |
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70 #ifdef HSPS_BUILD_LOG_IMPLEMENTATION |
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71 EXPORT_C void ChspsLogBus::LogText( TRefByValue<const TDesC8> aFmt, ... ) |
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72 { |
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73 VA_LIST list; |
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74 VA_START( list, aFmt ); |
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75 |
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76 HBufC* formatted = FormatMessage( aFmt, list ); |
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77 if( formatted ) |
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78 { |
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79 CropAndLogText( *formatted ); |
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80 delete formatted; |
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81 formatted = NULL; |
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82 } |
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83 else |
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84 { |
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85 _LogText( KLogError() ); |
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86 } |
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87 |
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88 VA_END( list ); |
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89 } |
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90 #else |
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91 EXPORT_C void ChspsLogBus::LogText( TRefByValue<const TDesC8> /*aFmt*/, ... ) |
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92 { |
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93 } |
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94 #endif |
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95 |
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96 //---------------------------------------------------------------------------- |
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97 // ChspsLogBus::ChspsLogBus |
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98 // ---------------------------------------------------------------------------- |
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99 // |
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100 #ifdef HSPS_BUILD_LOG_IMPLEMENTATION |
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101 TInt ChspsLogBus::MaxLineLen() const |
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102 { |
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103 return KDefaultMaxLineLen; |
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104 } |
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105 #else |
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106 TInt ChspsLogBus::MaxLineLen() const |
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107 { |
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108 return KErrNotSupported; |
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109 } |
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110 #endif |
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111 |
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112 //---------------------------------------------------------------------------- |
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113 // ChspsLogBus::ChspsLogBus |
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114 // ---------------------------------------------------------------------------- |
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115 // |
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116 EXPORT_C ChspsLogBus::ChspsLogBus() |
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117 { |
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118 // No implementation required |
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119 } |
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120 |
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121 //---------------------------------------------------------------------------- |
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122 // ChspsLogBus::FormatMessage |
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123 // ---------------------------------------------------------------------------- |
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124 // |
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125 #ifdef HSPS_BUILD_LOG_IMPLEMENTATION |
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126 HBufC* ChspsLogBus::FormatMessage( TRefByValue<const TDesC16> aFmt, VA_LIST aList ) |
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127 { |
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128 HBufC* message = NULL; |
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129 |
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130 TInt messageSize = KMessageGranularity; |
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131 |
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132 while( ETrue ) |
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133 { |
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134 TRAPD( err, message = HBufC::NewL( messageSize ) ); |
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135 if( err != KErrNone ) |
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136 { |
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137 delete message; |
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138 message = NULL; |
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139 |
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140 break; |
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141 } |
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142 |
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143 iOverflow = EFalse; |
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144 message->Des().AppendFormatList( aFmt, aList, this ); |
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145 if( !iOverflow ) |
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146 { |
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147 // All ok. |
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148 break; |
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149 } |
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150 else |
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151 { |
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152 messageSize *= 2; |
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153 |
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154 delete message; |
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155 message = NULL; |
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156 |
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157 // Sanity check. |
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158 if( messageSize > KMessageSanityLimit ) |
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159 { |
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160 break; |
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161 } |
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162 } |
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163 } |
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164 |
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165 return message; |
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166 } |
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167 #else |
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168 HBufC* ChspsLogBus::FormatMessage( TRefByValue<const TDesC16> /*aFmt*/, VA_LIST /*aList*/ ) |
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169 { |
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170 return NULL; |
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171 } |
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172 #endif |
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173 |
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174 //---------------------------------------------------------------------------- |
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175 // ChspsLogBus::Overflow |
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176 // ---------------------------------------------------------------------------- |
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177 // |
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178 void ChspsLogBus::Overflow( TDes16& /*aDes*/ ) |
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179 { |
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180 iOverflow = ETrue; |
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181 } |
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182 |
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183 //---------------------------------------------------------------------------- |
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184 // ChspsLogBus::FormatMessage |
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185 // ---------------------------------------------------------------------------- |
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186 // |
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187 #ifdef HSPS_BUILD_LOG_IMPLEMENTATION |
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188 HBufC* ChspsLogBus::FormatMessage( TRefByValue<const TDesC8> aFmt, VA_LIST aList ) |
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189 { |
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190 HBufC8* message8bit = NULL; |
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191 |
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192 TInt messageSize = KMessageGranularity; |
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193 |
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194 while( ETrue ) |
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195 { |
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196 TRAPD( err, message8bit = HBufC8::NewL( messageSize ) ); |
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197 if( err != KErrNone ) |
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198 { |
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199 delete message8bit; |
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200 message8bit = NULL; |
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201 |
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202 break; |
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203 } |
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204 |
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205 iOverflow = EFalse; |
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206 message8bit->Des().AppendFormatList( aFmt, aList, this ); |
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207 if( !iOverflow ) |
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208 { |
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209 // All ok. |
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210 break; |
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211 } |
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212 else |
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213 { |
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214 messageSize *= 2; |
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215 |
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216 delete message8bit; |
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217 message8bit = NULL; |
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218 |
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219 // Sanity check. |
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220 if( messageSize >= KMessageSanityLimit ) |
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221 { |
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222 break; |
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223 } |
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224 } |
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225 } |
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226 |
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227 // Convert 8bit to 16bit for logging. |
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228 HBufC* message16bit = NULL; |
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229 if( message8bit && message8bit->Length() > 0 ) |
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230 { |
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231 TRAPD( err, message16bit = HBufC::NewL( message8bit->Length() )); |
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232 if( err == KErrNone ) |
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233 { |
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234 message16bit->Des().Copy( *message8bit ); |
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235 } |
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236 else |
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237 { |
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238 delete message16bit; |
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239 message16bit = NULL; |
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240 } |
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241 } |
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242 else if( message8bit && message8bit->Length() == 0 ) |
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243 { |
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244 // Source is empty. |
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245 TRAP_IGNORE( message16bit = KNullDesC().AllocL() ); |
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246 } |
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247 |
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248 delete message8bit; |
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249 message8bit = NULL; |
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250 |
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251 return message16bit; |
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252 } |
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253 #else |
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254 HBufC* ChspsLogBus::FormatMessage( TRefByValue<const TDesC8> /*aFmt*/, VA_LIST /*aList*/ ) |
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255 { |
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256 return NULL; |
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257 } |
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258 #endif |
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259 |
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260 //---------------------------------------------------------------------------- |
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261 // ChspsLogBus::Overflow |
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262 // ---------------------------------------------------------------------------- |
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263 // |
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264 void ChspsLogBus::Overflow( TDes8& /*aDes*/ ) |
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265 { |
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266 iOverflow = ETrue; |
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267 } |
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268 |
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269 #ifdef HSPS_BUILD_LOG_IMPLEMENTATION |
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270 void ChspsLogBus::CropAndLogText( const TDesC& aText ) |
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271 { |
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272 const TInt KLineMax = MaxLineLen(); |
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273 |
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274 // Fits to one line. |
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275 if( aText.Length() <= KLineMax ) |
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276 { |
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277 _LogText( aText ); |
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278 return; |
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279 } |
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280 |
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281 // Does not fit. Log cropped. |
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282 TPtrC ptr = aText; |
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283 while( ETrue ) |
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284 { |
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285 const TInt KRemainingLen = ptr.Length(); |
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286 if( KRemainingLen == 0 ) |
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287 { |
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288 break; |
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289 } |
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290 |
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291 if( KRemainingLen <= KLineMax ) |
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292 { |
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293 _LogText( ptr ); |
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294 break; |
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295 } |
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296 else |
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297 { |
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298 _LogText( ptr.Left( KLineMax ) ); |
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299 ptr.Set( ptr.Right( ptr.Length() - KLineMax ) ); |
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300 } |
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301 } |
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302 } |
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303 #else |
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304 void ChspsLogBus::CropAndLogText( const TDesC& /*aText*/ ) |
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305 { |
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306 } |
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307 #endif |