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1 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Symbian Foundation License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // This is the CPP file which contains utility functions for parsing the config file |
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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 @file |
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22 */ |
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23 |
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24 |
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25 // User include |
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26 #include <t_utilsconfigfileparserutility.h> |
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27 |
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28 // epoc inlcude |
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29 #include <f32file.h> |
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30 |
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31 // contants and literals used |
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32 const TInt KFileBufferSize = 1024; |
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33 _LIT8(KComment,"*#*"); |
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34 |
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35 |
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36 /** |
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37 NewL() |
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38 Allocates and creates a new CT_MsgUtilsConfigFileParserUtility object |
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39 |
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40 @param aFileName |
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41 Name of the file to be parsed |
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42 |
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43 @leave KErrNoMemory |
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44 @return |
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45 The newly created CT_MsgUtilsConfigFileParserUtility object |
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46 */ |
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47 EXPORT_C CT_MsgUtilsConfigFileParserUtility* CT_MsgUtilsConfigFileParserUtility::NewL(const TDesC& aFileName) |
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48 { |
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49 CT_MsgUtilsConfigFileParserUtility* self = new (ELeave) CT_MsgUtilsConfigFileParserUtility(); |
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50 CleanupStack::PushL(self); |
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51 self->ConstructL(aFileName); |
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52 CleanupStack::Pop(); |
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53 return self; |
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54 } |
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55 |
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56 |
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57 /** |
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58 CT_MsgUtilsConfigFileParserUtility() |
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59 Constructor |
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60 */ |
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61 EXPORT_C CT_MsgUtilsConfigFileParserUtility::CT_MsgUtilsConfigFileParserUtility() |
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62 { |
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63 } |
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64 |
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65 |
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66 /** |
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67 ~CT_MsgUtilsConfigFileParserUtility() |
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68 Destructor |
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69 */ |
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70 CT_MsgUtilsConfigFileParserUtility::~CT_MsgUtilsConfigFileParserUtility() |
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71 { |
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72 iName.ResetAndDestroy(); |
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73 iContent.ResetAndDestroy(); |
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74 iContent8.ResetAndDestroy(); |
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75 } |
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76 |
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77 |
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78 /** |
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79 ConstructL() |
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80 Parses a .txt file and creates Arrays of fields and there values |
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81 |
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82 @param aFileName |
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83 Name of the file to be parsed. |
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84 */ |
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85 EXPORT_C void CT_MsgUtilsConfigFileParserUtility::ConstructL(const TDesC& aFileName) |
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86 { |
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87 RFs fileServerSession; |
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88 |
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89 fileServerSession.Connect(); |
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90 |
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91 RFile file; |
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92 User::LeaveIfError(file.Open(fileServerSession, aFileName, EFileRead)); |
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93 |
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94 TInt eof = EFalse; |
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95 TInt fileOffset = 0; |
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96 TBuf8<KFileBufferSize> fileBuffer; |
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97 |
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98 while (!eof) |
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99 { |
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100 fileBuffer.SetLength(0); |
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101 User::LeaveIfError(file.Read(fileOffset, fileBuffer, KFileBufferSize)); |
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102 TInt read = fileBuffer.Length(); |
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103 |
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104 if (read < KFileBufferSize) |
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105 { |
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106 fileBuffer.Append('\n'); |
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107 eof = ETrue; |
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108 } |
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109 |
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110 TInt lineOverflow = fileBuffer.Locate('\n'); |
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111 |
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112 if ((lineOverflow == KErrNotFound) && (read == KFileBufferSize)) |
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113 { |
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114 User::Leave(KErrOverflow); |
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115 } |
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116 |
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117 TInt eol = EFalse; |
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118 |
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119 while (!eol) |
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120 { |
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121 TInt lineFeedLocation = fileBuffer.Locate('\n'); |
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122 |
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123 if (lineFeedLocation == KErrNotFound) |
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124 { |
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125 eol = ETrue; |
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126 } |
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127 |
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128 else |
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129 { |
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130 fileOffset += lineFeedLocation + 1; |
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131 TInt lineLength; |
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132 if ((lineFeedLocation != 0) && (fileBuffer[lineFeedLocation - 1] == '\r')) |
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133 { |
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134 lineLength = lineFeedLocation - 1; |
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135 } |
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136 |
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137 else |
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138 { |
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139 lineLength = lineFeedLocation; |
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140 } |
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141 |
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142 TPtrC8 line = fileBuffer.Left(lineLength); |
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143 TInt commentLocation = line.Match(KComment); |
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144 |
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145 if (commentLocation != KErrNotFound) |
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146 { |
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147 TPtrC8 skipComment = line.Left(commentLocation); |
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148 line.Set(skipComment); |
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149 } |
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150 |
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151 TInt seperatorLocation = line.Locate('='); |
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152 |
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153 if (seperatorLocation != KErrNotFound) |
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154 { |
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155 if ((seperatorLocation == 0) || (seperatorLocation == line.Length() - 1)) |
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156 { |
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157 seperatorLocation = KErrNotFound; |
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158 } |
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159 } |
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160 |
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161 if (seperatorLocation != KErrNotFound) |
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162 { |
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163 TPtrC8 namePtr = line.Left(seperatorLocation); |
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164 HBufC8* nameBuf8 = HBufC8::NewL(namePtr.Length()); |
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165 CleanupStack::PushL(nameBuf8); |
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166 |
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167 TPtr8 name8 = nameBuf8->Des(); |
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168 name8.Copy(namePtr); |
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169 name8.Trim(); |
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170 HBufC* nameBuf16 = HBufC::NewL(namePtr.Length()); |
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171 TPtr name16 = nameBuf16->Des(); |
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172 name16.Copy(name8); |
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173 iName.Append(nameBuf16); |
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174 CleanupStack::PopAndDestroy(nameBuf8); |
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175 |
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176 TPtrC8 contentPtr = line.Mid(seperatorLocation + 1); |
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177 HBufC8* contentBuf8 = HBufC8::NewL(contentPtr.Length()); |
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178 CleanupStack::PushL(contentBuf8); |
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179 TPtr8 content8 = contentBuf8->Des(); |
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180 content8.Copy(contentPtr); |
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181 content8.Trim(); |
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182 |
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183 HBufC* contentBuf16 = HBufC::NewL(contentPtr.Length()); |
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184 TPtr content16 = contentBuf16->Des(); |
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185 content16.Copy(content8); |
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186 iContent.Append(contentBuf16); |
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187 iContent8.Append(contentBuf8); |
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188 CleanupStack::Pop(contentBuf8); |
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189 } |
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190 TPtrC8 theRest = fileBuffer.Mid(lineFeedLocation + 1); |
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191 fileBuffer.Copy(theRest); |
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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 file.Close(); |
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197 fileServerSession.Close(); |
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198 } |
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199 |
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200 |
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201 /** |
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202 GetFieldAsInteger() |
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203 Retrives the content of a field name and Interpret it as an integer. |
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204 |
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205 @param aFieldName |
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206 @param aValue |
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207 @return |
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208 Returns an integer corresponding to the field |
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209 */ |
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210 EXPORT_C TInt CT_MsgUtilsConfigFileParserUtility::GetFieldAsInteger(const TDesC& aFieldName, TInt& aValue) |
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211 { |
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212 TInt count = iName.Count(); |
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213 |
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214 for (TInt i = 0; i<count; i++) |
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215 { |
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216 if (iName[i]->Compare(aFieldName) == 0) |
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217 { |
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218 TPtrC content = iContent[i]->Des(); |
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219 TLex lex(content); |
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220 lex.Val(aValue); |
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221 return (KErrNone); |
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222 } |
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223 } |
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224 return (KErrNotFound); |
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225 } |
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226 |
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227 |
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228 /** |
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229 GetFieldAsString() |
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230 Retrives the content of a field name and Interpret it as an string |
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231 |
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232 @param aFieldName |
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233 @param aValue |
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234 @return |
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235 Returns an string corresponding to the field |
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236 */ |
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237 EXPORT_C TInt CT_MsgUtilsConfigFileParserUtility::GetFieldAsString(const TDesC& aFieldName, TPtrC& aString) |
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238 { |
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239 TInt count = iName.Count(); |
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240 |
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241 for (TInt i = 0; i<count; i++) |
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242 { |
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243 if (iName[i]->Compare(aFieldName) == 0) |
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244 { |
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245 aString.Set(*iContent[i]); |
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246 return (KErrNone); |
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247 } |
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248 } |
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249 return (KErrNotFound); |
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250 } |
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251 |
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252 |
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253 /** |
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254 GetFieldAsString8() |
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255 Retrives the content of a field name and Interpret it as an 8-bit descriptor |
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256 |
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257 @param aFieldName |
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258 @param aValue |
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259 @return |
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260 Returns an 8-bit descriptor corresponding to the field |
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261 */ |
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262 EXPORT_C TInt CT_MsgUtilsConfigFileParserUtility::GetFieldAsString8(const TDesC& aFieldName, TPtrC8& aString) |
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263 { |
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264 TInt count = iName.Count(); |
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265 |
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266 for (TInt i = 0; i<count; i++) |
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267 { |
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268 if (iName[i]->Compare(aFieldName) == 0) |
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269 { |
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270 aString.Set(*iContent8[i]); |
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271 return (KErrNone); |
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272 } |
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273 } |
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274 return (KErrNotFound); |
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275 } |