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1 // Copyright (c) 2007-2009 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 // |
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15 |
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16 |
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17 #include "msvinifile.h" |
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18 #include <f32file.h> |
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19 #include <e32std.h> |
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20 |
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21 // Maximum token size |
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22 const TInt KTokenSize=256; |
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23 |
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24 // Default location for our config files |
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25 _LIT(KIniFileDir, "Z:\\private\\1000484b\\"); |
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26 |
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27 |
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28 |
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29 CMsvIniData::CMsvIniData() |
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30 : iPtr(NULL,0) |
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31 { |
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32 __DECLARE_NAME(_S("CMsvIniData")); |
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33 } |
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34 |
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35 |
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36 CMsvIniData::~CMsvIniData() |
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37 { |
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38 delete (TText*)iPtr.Ptr(); |
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39 delete iToken; |
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40 delete iName; |
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41 } |
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42 |
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43 |
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44 |
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45 /** |
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46 Creates and returns a pointer to CMsvIniData object, leave on failure |
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47 @return A pointer to the CiniData object |
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48 */ |
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49 CMsvIniData* CMsvIniData::NewL(const TDesC& aName) |
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50 { |
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51 CMsvIniData* p=new(ELeave) CMsvIniData; |
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52 CleanupStack::PushL(p); |
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53 |
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54 p->ConstructL(aName); |
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55 |
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56 CleanupStack::Pop(); |
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57 return p; |
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58 } |
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59 |
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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 Second-phase constructor. |
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65 The function attempts to allocate a buffer and Read file's contents into iPtr |
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66 |
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67 @param aName The name of the file which contains the ini data. |
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68 @leave One of the system-wide error codes. |
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69 */ |
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70 void CMsvIniData::ConstructL(const TDesC& aName) |
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71 { |
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72 // Allocate space for token |
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73 iToken=HBufC::NewL(KTokenSize+2); // 2 extra chars for [tokenName] |
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74 |
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75 // Connect to file server |
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76 TAutoClose<RFs> fs; |
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77 User::LeaveIfError(fs.iObj.Connect()); |
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78 fs.PushL(); |
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79 |
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80 #if (defined SYMBIAN_MESSAGESTORE_UNIT_TESTCODE) |
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81 iName = aName.AllocL(); |
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82 #else |
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83 TFindFile ff(fs.iObj); |
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84 User::LeaveIfError(ff.FindByDir(aName, KIniFileDir)); |
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85 iName=ff.File().AllocL(); |
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86 #endif |
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87 |
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88 // Open file |
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89 TAutoClose<RFile> file; |
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90 TInt size; |
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91 User::LeaveIfError(file.iObj.Open(fs.iObj,*iName,EFileStreamText|EFileShareReadersOrWriters)); |
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92 file.PushL(); |
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93 |
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94 // Get file size and read in |
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95 User::LeaveIfError(file.iObj.Size(size)); |
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96 TText* data=(TText*)User::AllocL(size); |
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97 iPtr.Set(data, size/sizeof(TText), size/sizeof(TText)); |
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98 TPtr8 dest((TUint8*)data, 0, size); |
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99 User::LeaveIfError(file.iObj.Read(dest)); |
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100 TUint8* ptr = (TUint8*)data; |
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101 |
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102 // |
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103 // This is orderred as FEFF assuming the processor is Little Endian |
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104 // The data in the file is FFFE. |
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105 // |
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106 if(size>=(TInt)sizeof(TText) && iPtr[0]==0xFEFF) |
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107 { |
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108 // UNICODE Text file so lose the FFFE |
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109 Mem::Copy(ptr, ptr+sizeof(TText), size-sizeof(TText)); |
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110 iPtr.Set(data, size/sizeof(TText)-1, size/sizeof(TText)-1); |
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111 } |
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112 else if(size) |
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113 { |
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114 // NON-UNICODE so convert to UNICODE |
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115 TText* newdata = (TText*)User::AllocL(size*sizeof(TText)); |
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116 iPtr.Set(newdata, size, size); |
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117 TInt i; |
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118 for(i=0 ; i<size ; ++i) |
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119 { |
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120 iPtr[i]=ptr[i]; |
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121 } |
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122 delete data; |
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123 } |
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124 |
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125 file.Pop(); |
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126 fs.Pop(); |
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127 } |
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128 |
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129 |
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130 |
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131 /** |
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132 Find a text value from given aKeyName regardless the section in the ini data file |
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133 |
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134 @param aKeyName Key being searched for |
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135 @param aResult On return, contains the text result |
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136 @return ETrue if found, otherwise EFalse |
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137 */ |
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138 TBool CMsvIniData::FindVar(const TDesC& aKeyName, TPtrC& aResult) |
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139 { |
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140 // Call with no section, so starts at beginning |
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141 if (FindVar((TDesC&)KNullDesC , aKeyName, aResult)) |
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142 { |
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143 return(ETrue); |
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144 } |
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145 else |
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146 { |
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147 return(EFalse); |
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148 } |
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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 |
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154 /** |
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155 Find a text value from given aKeyName and aSecName in the ini data file |
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156 |
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157 @param aSectName Section containing key |
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158 @param aKeyName Key being searched for in aSectName |
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159 @param aResult On return, contains the text result |
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160 |
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161 @return ETrue if found, otherwise EFalse |
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162 |
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163 */ |
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164 TBool CMsvIniData::FindVar(const TDesC& aSectName, const TDesC& aKeyName,TPtrC& aResult) |
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165 { |
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166 //Should use messaging panic codes??? |
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167 __ASSERT_DEBUG(aSectName.Length() <= KTokenSize, User::Invariant()); |
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168 __ASSERT_DEBUG(aKeyName.Length() <= KTokenSize, User::Invariant()); |
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169 |
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170 TInt posStartOfSection(0); |
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171 TInt posEndOfSection(iPtr.Length()); // Default to the entire length of the ini data |
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172 TPtrC SearchBuf; |
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173 |
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174 // If we have a section, set pos to section start |
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175 TInt posI(0); // Position in internal data Buffer |
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176 if( aSectName.Length() > 0 ) |
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177 { |
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178 TBool FoundSection(false); |
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179 while ( !FoundSection ) |
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180 { |
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181 // Move search buffer to next area of interest |
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182 SearchBuf.Set(iPtr.Mid(posI)); |
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183 |
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184 // Make up token "[SECTIONNAME]", to search for |
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185 TPtr sectionToken=iToken->Des(); |
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186 _LIT(sectionTokenFmtString,"[%S]"); |
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187 sectionToken.Format(sectionTokenFmtString,&aSectName); |
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188 |
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189 // Search for next occurrence of aSectName |
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190 TInt posSB = SearchBuf.Find(sectionToken); |
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191 |
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192 if (posSB==KErrNotFound) |
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193 return(EFalse); |
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194 |
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195 // Check this is at beginning of line (ie. non-commented) |
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196 // ie. Check preceding char was LF |
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197 if(posSB>0) |
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198 { |
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199 // Create a Buffer, starting one char before found subBuf |
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200 TPtrC CharBefore(SearchBuf.Right(SearchBuf.Length()-posSB+1)); |
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201 // Check first char is end of prev |
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202 if(CharBefore[0] == '\n') |
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203 { |
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204 FoundSection = ETrue; // found |
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205 posI = posI + posSB; |
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206 } |
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207 else |
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208 { |
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209 posI = posI + posSB + 1; // try again |
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210 } |
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211 } |
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212 else |
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213 { |
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214 FoundSection = ETrue; |
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215 } |
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216 |
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217 } // while ( ! FoundSection ) |
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218 |
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219 // Set start of section, after section name, (incl '[' and ']') |
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220 posStartOfSection = posI + aSectName.Length() + 2; |
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221 |
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222 // Set end of section, by finding begin of next section or end |
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223 SearchBuf.Set(iPtr.Mid(posI)); |
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224 _LIT(nextSectionBuf,"\n["); |
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225 TInt posSB = SearchBuf.Find(nextSectionBuf); |
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226 if(posSB != KErrNotFound) |
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227 { |
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228 posEndOfSection = posI + posSB; |
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229 } |
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230 else |
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231 { |
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232 posEndOfSection = iPtr.Length(); |
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233 } |
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234 |
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235 } // if( aSectName.Length() > 0 ) |
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236 |
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237 // Look for key in ini file data Buffer |
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238 posI = posStartOfSection; |
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239 TBool FoundKey(false); |
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240 while ( ! FoundKey ) |
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241 { |
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242 // Search for next occurrence of aKeyName |
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243 SearchBuf.Set(iPtr.Mid(posI,posEndOfSection-posI)); |
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244 TInt posSB = SearchBuf.Find(aKeyName); |
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245 |
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246 // If not found, return |
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247 if (posSB==KErrNotFound) |
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248 return(EFalse); |
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249 |
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250 // Check this is at beginning of line (ie. non-commented) |
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251 // ie. Check preceding char was CR or LF |
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252 if(posSB>0) |
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253 { |
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254 // Create a Buffer, starting one char before found subBuf |
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255 TPtrC CharBefore(SearchBuf.Right(SearchBuf.Length()-posSB+1)); |
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256 // Check if the first char is end of prev and also check |
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257 // if the token found is not a substring of another string |
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258 TBool beginningOK = ((CharBefore[0] == '\n') || (CharBefore[0] == ' ') || (CharBefore[0] == '\t')); |
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259 TBool endingOK = ((CharBefore[aKeyName.Length()+1] == '=') || (CharBefore[aKeyName.Length()+1] == ' ') || (CharBefore[aKeyName.Length()+1] == '\t')); |
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260 if (beginningOK && endingOK) |
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261 { |
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262 FoundKey = ETrue; |
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263 posI = posI + posSB; |
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264 } |
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265 else |
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266 { |
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267 posI = posI + posSB + 1; |
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268 } |
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269 } |
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270 else |
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271 { |
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272 FoundKey = ETrue; |
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273 } |
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274 } // while ( ! FoundKey ) |
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275 |
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276 // Set pos, to just after '=' sign |
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277 SearchBuf.Set(iPtr.Mid(posI)); |
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278 TInt posSB = SearchBuf.Locate('='); |
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279 if(posSB==KErrNotFound) // Illegal format, should flag this... |
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280 { |
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281 return(EFalse); |
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282 } |
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283 |
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284 // Identify start and end of data (EOL or EOF) |
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285 posI = posI + posSB + 1; // 1 char after '=' |
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286 TInt posValStart = posI; |
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287 TInt posValEnd; |
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288 SearchBuf.Set(iPtr.Mid(posI)); |
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289 posSB = SearchBuf.Locate('\r'); |
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290 if(posSB!=KErrNotFound) |
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291 { |
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292 posValEnd = posI + posSB; |
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293 } |
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294 else |
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295 { |
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296 posValEnd = iPtr.Length(); |
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297 } |
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298 |
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299 // Check we are still in the section requested |
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300 if( aSectName.Length() > 0 ) |
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301 { |
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302 if( posValEnd > posEndOfSection ) |
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303 { |
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304 return(EFalse); |
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305 } |
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306 } |
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307 // Parse Buffer from posn of key |
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308 // Start one space after '=' |
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309 TLex lex(iPtr.Mid(posValStart, posValEnd-posValStart)); |
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310 lex.SkipSpaceAndMark(); // Should be at the start of the data |
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311 aResult.Set(lex.MarkedToken().Ptr(),posValEnd-posValStart - lex.Offset() ); |
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312 return(ETrue); |
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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 /** |
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318 Find an integer value from given aKeyName regardless the section in the ini data file |
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319 |
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320 @param aKeyName Key being searched for |
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321 @param aResult On return, contains the TInt result |
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322 @return ETrue if found, otherwise EFalse |
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323 */ |
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324 TBool CMsvIniData::FindVar(const TDesC& aKeyName, TInt& aResult) |
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325 { |
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326 TPtrC ptr(NULL,0); |
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327 if (FindVar(aKeyName,ptr)) |
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328 { |
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329 TLex lex(ptr); |
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330 if (lex.Val(aResult)==KErrNone) |
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331 return(ETrue); |
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332 } |
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333 return(EFalse); |
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334 } |
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335 |
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336 |
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337 |
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338 /** |
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339 Find an integer value from given aKeyName and aSecName in the ini data file |
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340 |
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341 @param aSectName Section containing key |
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342 @param aKeyName Key being searched for in aSectName |
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343 @param aResult On return, contains TInt result |
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344 @return ETrue if found, otherwise EFalse |
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345 */ |
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346 TBool CMsvIniData::FindVar(const TDesC& aSection, const TDesC& aKeyName,TInt& aResult) |
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347 { |
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348 TPtrC ptr(NULL,0); |
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349 if (FindVar(aSection,aKeyName,ptr)) |
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350 { |
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351 TLex lex(ptr); |
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352 if (lex.Val(aResult)==KErrNone) |
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353 { |
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354 return(ETrue); |
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355 } |
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356 } |
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357 return(EFalse); |
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358 } |