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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 "Eclipse Public 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.eclipse.org/legal/epl-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 @file |
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20 */ |
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21 |
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22 |
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23 // User include |
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24 #include <t_utilsconfigfileparserutility.h> |
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25 |
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26 // epoc inlcude |
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27 #include <f32file.h> |
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28 |
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29 // contants and literals used |
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30 const TInt KFileBufferSize = 1024; |
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31 _LIT8(KComment,"*#*"); |
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32 |
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33 |
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34 /** |
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35 NewL() |
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36 Allocates and creates a new CT_MsgUtilsConfigFileParserUtility object |
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37 |
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38 @param aFileName |
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39 Name of the file to be parsed |
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40 |
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41 @leave KErrNoMemory |
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42 @return |
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43 The newly created CT_MsgUtilsConfigFileParserUtility object |
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44 */ |
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45 EXPORT_C CT_MsgUtilsConfigFileParserUtility* CT_MsgUtilsConfigFileParserUtility::NewL(const TDesC& aFileName) |
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46 { |
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47 CT_MsgUtilsConfigFileParserUtility* self = new (ELeave) CT_MsgUtilsConfigFileParserUtility(); |
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48 CleanupStack::PushL(self); |
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49 self->ConstructL(aFileName); |
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50 CleanupStack::Pop(); |
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51 return self; |
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52 } |
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53 |
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54 |
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55 /** |
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56 CT_MsgUtilsConfigFileParserUtility() |
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57 Constructor |
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58 */ |
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59 EXPORT_C CT_MsgUtilsConfigFileParserUtility::CT_MsgUtilsConfigFileParserUtility() |
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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 /** |
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65 ~CT_MsgUtilsConfigFileParserUtility() |
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66 Destructor |
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67 */ |
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68 CT_MsgUtilsConfigFileParserUtility::~CT_MsgUtilsConfigFileParserUtility() |
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69 { |
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70 iName.ResetAndDestroy(); |
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71 iContent.ResetAndDestroy(); |
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72 iContent8.ResetAndDestroy(); |
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73 } |
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74 |
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75 |
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76 /** |
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77 ConstructL() |
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78 Parses a .txt file and creates Arrays of fields and there values |
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79 |
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80 @param aFileName |
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81 Name of the file to be parsed. |
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82 */ |
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83 EXPORT_C void CT_MsgUtilsConfigFileParserUtility::ConstructL(const TDesC& aFileName) |
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84 { |
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85 RFs fileServerSession; |
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86 |
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87 fileServerSession.Connect(); |
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88 |
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89 RFile file; |
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90 User::LeaveIfError(file.Open(fileServerSession, aFileName, EFileRead)); |
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91 |
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92 TInt eof = EFalse; |
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93 TInt fileOffset = 0; |
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94 TBuf8<KFileBufferSize> fileBuffer; |
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95 |
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96 while (!eof) |
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97 { |
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98 fileBuffer.SetLength(0); |
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99 User::LeaveIfError(file.Read(fileOffset, fileBuffer, KFileBufferSize)); |
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100 TInt read = fileBuffer.Length(); |
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101 |
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102 if (read < KFileBufferSize) |
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103 { |
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104 fileBuffer.Append('\n'); |
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105 eof = ETrue; |
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106 } |
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107 |
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108 TInt lineOverflow = fileBuffer.Locate('\n'); |
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109 |
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110 if ((lineOverflow == KErrNotFound) && (read == KFileBufferSize)) |
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111 { |
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112 User::Leave(KErrOverflow); |
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113 } |
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114 |
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115 TInt eol = EFalse; |
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116 |
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117 while (!eol) |
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118 { |
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119 TInt lineFeedLocation = fileBuffer.Locate('\n'); |
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120 |
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121 if (lineFeedLocation == KErrNotFound) |
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122 { |
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123 eol = ETrue; |
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124 } |
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125 |
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126 else |
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127 { |
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128 fileOffset += lineFeedLocation + 1; |
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129 TInt lineLength; |
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130 if ((lineFeedLocation != 0) && (fileBuffer[lineFeedLocation - 1] == '\r')) |
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131 { |
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132 lineLength = lineFeedLocation - 1; |
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133 } |
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134 |
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135 else |
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136 { |
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137 lineLength = lineFeedLocation; |
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138 } |
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139 |
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140 TPtrC8 line = fileBuffer.Left(lineLength); |
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141 TInt commentLocation = line.Match(KComment); |
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142 |
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143 if (commentLocation != KErrNotFound) |
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144 { |
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145 TPtrC8 skipComment = line.Left(commentLocation); |
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146 line.Set(skipComment); |
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147 } |
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148 |
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149 TInt seperatorLocation = line.Locate('='); |
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150 |
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151 if (seperatorLocation != KErrNotFound) |
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152 { |
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153 if ((seperatorLocation == 0) || (seperatorLocation == line.Length() - 1)) |
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154 { |
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155 seperatorLocation = KErrNotFound; |
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156 } |
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157 } |
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158 |
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159 if (seperatorLocation != KErrNotFound) |
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160 { |
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161 TPtrC8 namePtr = line.Left(seperatorLocation); |
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162 HBufC8* nameBuf8 = HBufC8::NewL(namePtr.Length()); |
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163 CleanupStack::PushL(nameBuf8); |
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164 |
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165 TPtr8 name8 = nameBuf8->Des(); |
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166 name8.Copy(namePtr); |
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167 name8.Trim(); |
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168 HBufC* nameBuf16 = HBufC::NewL(namePtr.Length()); |
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169 TPtr name16 = nameBuf16->Des(); |
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170 name16.Copy(name8); |
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171 iName.Append(nameBuf16); |
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172 CleanupStack::PopAndDestroy(nameBuf8); |
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173 |
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174 TPtrC8 contentPtr = line.Mid(seperatorLocation + 1); |
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175 HBufC8* contentBuf8 = HBufC8::NewL(contentPtr.Length()); |
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176 CleanupStack::PushL(contentBuf8); |
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177 TPtr8 content8 = contentBuf8->Des(); |
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178 content8.Copy(contentPtr); |
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179 content8.Trim(); |
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180 |
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181 HBufC* contentBuf16 = HBufC::NewL(contentPtr.Length()); |
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182 TPtr content16 = contentBuf16->Des(); |
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183 content16.Copy(content8); |
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184 iContent.Append(contentBuf16); |
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185 iContent8.Append(contentBuf8); |
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186 CleanupStack::Pop(contentBuf8); |
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187 } |
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188 TPtrC8 theRest = fileBuffer.Mid(lineFeedLocation + 1); |
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189 fileBuffer.Copy(theRest); |
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190 } |
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191 } |
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192 } |
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193 file.Close(); |
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194 fileServerSession.Close(); |
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195 } |
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196 |
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197 |
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198 /** |
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199 GetFieldAsInteger() |
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200 Retrives the content of a field name and Interpret it as an integer. |
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201 |
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202 @param aFieldName |
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203 @param aValue |
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204 @return |
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205 Returns an integer corresponding to the field |
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206 */ |
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207 EXPORT_C TInt CT_MsgUtilsConfigFileParserUtility::GetFieldAsInteger(const TDesC& aFieldName, TInt& aValue) |
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208 { |
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209 TInt count = iName.Count(); |
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210 |
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211 for (TInt i = 0; i<count; i++) |
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212 { |
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213 if (iName[i]->Compare(aFieldName) == 0) |
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214 { |
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215 TPtrC content = iContent[i]->Des(); |
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216 TLex lex(content); |
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217 lex.Val(aValue); |
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218 return (KErrNone); |
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219 } |
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220 } |
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221 return (KErrNotFound); |
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222 } |
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223 |
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224 |
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225 /** |
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226 GetFieldAsString() |
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227 Retrives the content of a field name and Interpret it as an string |
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228 |
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229 @param aFieldName |
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230 @param aValue |
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231 @return |
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232 Returns an string corresponding to the field |
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233 */ |
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234 EXPORT_C TInt CT_MsgUtilsConfigFileParserUtility::GetFieldAsString(const TDesC& aFieldName, TPtrC& aString) |
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235 { |
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236 TInt count = iName.Count(); |
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237 |
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238 for (TInt i = 0; i<count; i++) |
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239 { |
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240 if (iName[i]->Compare(aFieldName) == 0) |
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241 { |
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242 aString.Set(*iContent[i]); |
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243 return (KErrNone); |
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244 } |
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245 } |
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246 return (KErrNotFound); |
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247 } |
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248 |
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249 |
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250 /** |
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251 GetFieldAsString8() |
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252 Retrives the content of a field name and Interpret it as an 8-bit descriptor |
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253 |
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254 @param aFieldName |
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255 @param aValue |
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256 @return |
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257 Returns an 8-bit descriptor corresponding to the field |
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258 */ |
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259 EXPORT_C TInt CT_MsgUtilsConfigFileParserUtility::GetFieldAsString8(const TDesC& aFieldName, TPtrC8& aString) |
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260 { |
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261 TInt count = iName.Count(); |
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262 |
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263 for (TInt i = 0; i<count; i++) |
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264 { |
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265 if (iName[i]->Compare(aFieldName) == 0) |
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266 { |
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267 aString.Set(*iContent8[i]); |
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268 return (KErrNone); |
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269 } |
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270 } |
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271 return (KErrNotFound); |
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272 } |
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273 |
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274 |
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275 |