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1 // Copyright (c) 1997-2009 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 // Local CTestIniData class, derived from CIniData.lib |
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15 // |
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16 // |
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17 |
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18 #include <f32file.h> |
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19 #include <e32std.h> |
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20 #include "TestIniData.h" |
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21 |
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22 // Default directory to look for INI file |
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23 _LIT(KIniFileDir,"C:\\System\\Data\\"); |
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24 |
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25 const TInt KTokenSize=40; |
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26 |
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27 // |
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28 void CTestIniData::Panic(TTestIniPanic aPanic) |
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29 { |
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30 _LIT(KIniData,"CTestIniData"); |
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31 User::Panic(KIniData,aPanic); |
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32 } |
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33 |
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34 |
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35 // |
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36 CTestIniData::CTestIniData() |
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37 : iPtr(NULL,0) |
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38 { |
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39 __DECLARE_NAME(_S("CTestIniData")); |
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40 } |
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41 |
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42 // |
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43 CTestIniData::~CTestIniData() |
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44 { |
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45 |
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46 delete (TText*)iPtr.Ptr(); |
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47 delete iToken; |
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48 delete iName; |
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49 } |
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50 |
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51 // |
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52 CTestIniData* CTestIniData::NewL(const TDesC& aName) |
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53 { |
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54 CTestIniData* p=new(ELeave) CTestIniData; |
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55 CleanupStack::PushL(p); |
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56 p->ConstructL(aName); |
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57 CleanupStack::Pop(); |
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58 return p; |
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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 // Allocate a buffer and Read file's contents into iPtr |
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64 // |
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65 void CTestIniData::ConstructL(const TDesC& aName) |
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66 { |
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67 // Allocate space for token |
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68 iToken=HBufC::NewL(KTokenSize+2); // 2 extra chars for [tokenName] |
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69 |
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70 // Connect to file server |
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71 TAutoClose<RFs> fs; |
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72 User::LeaveIfError(fs.iObj.Connect()); |
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73 fs.PushL(); |
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74 |
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75 // Find file, given name |
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76 TFindFile ff(fs.iObj); |
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77 User::LeaveIfError(ff.FindByDir(aName, KIniFileDir)); |
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78 iName=ff.File().AllocL(); |
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79 |
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80 // Open file |
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81 TAutoClose<RFile> file; |
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82 TInt size; |
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83 User::LeaveIfError(file.iObj.Open(fs.iObj,*iName,EFileStreamText|EFileRead)); |
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84 file.PushL(); |
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85 |
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86 // Get file size and read in |
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87 User::LeaveIfError(file.iObj.Size(size)); |
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88 TText* data=(TText*)User::AllocL(size); |
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89 iPtr.Set(data, size/sizeof(TText), size/sizeof(TText)); |
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90 TPtr8 dest((TUint8*)data, 0, size); |
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91 User::LeaveIfError(file.iObj.Read(dest)); |
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92 TUint8* ptr = (TUint8*)data; |
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93 |
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94 // |
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95 // This is orderred as FEFF assuming the processor is Little Endian |
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96 // The data in the file is FFFE. PRR 28/9/98 |
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97 // |
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98 if(size>=(TInt)sizeof(TText) && iPtr[0]==0xFEFF) |
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99 { |
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100 // UNICODE Text file so lose the FFFE |
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101 Mem::Copy(ptr, ptr+sizeof(TText), size-sizeof(TText)); |
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102 iPtr.Set(data, size/sizeof(TText)-1, size/sizeof(TText)-1); |
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103 } |
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104 else if(size) |
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105 { |
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106 // NON-UNICODE so convert to UNICODE |
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107 TText* newdata = (TText*)User::AllocL(size*sizeof(TText)); |
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108 iPtr.Set(newdata, size, size); |
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109 TInt i; |
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110 for(i=0 ; i<size ; ++i) |
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111 iPtr[i]=ptr[i]; |
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112 delete data; |
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113 } |
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114 |
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115 file.Pop(); |
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116 fs.Pop(); |
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117 } |
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118 |
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119 // |
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120 TBool CTestIniData::FindVar(const TDesC &aKeyName, TPtrC &aResult) |
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121 { |
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122 TDesC dummySection = _L(""); |
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123 // Call with no section, so starts at beginning |
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124 if (FindVar(dummySection, aKeyName, aResult)) |
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125 return(ETrue); |
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126 else |
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127 return(EFalse); |
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128 } |
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129 // |
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130 // |
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131 // Find a key's value given a section name and a key name |
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132 // |
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133 TBool CTestIniData::FindVar(const TDesC &aSectName,const TDesC &aKeyName,TPtrC &aResult) |
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134 { |
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135 |
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136 __ASSERT_DEBUG(aSectName.Length()<=KTokenSize,Panic(ESectionNameTooBig)); |
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137 __ASSERT_DEBUG(aKeyName.Length()<=KTokenSize,Panic(EKeyNameTooBig)); |
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138 |
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139 TInt posStartOfSection(0); |
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140 TInt posEndOfSection(iPtr.Length()); // Default to the entire length of the ini data |
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141 TPtrC SearchBuf; |
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142 |
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143 // If we have a section, set pos to section start |
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144 TInt posI(0); // Position in internal data Buffer |
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145 if( aSectName.Length() > 0 ) |
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146 { |
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147 TBool FoundSection(false); |
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148 while ( ! FoundSection ) |
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149 { |
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150 // Move search buffer to next area of interest |
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151 SearchBuf.Set(iPtr.Mid(posI)); |
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152 |
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153 // Make up token "[SECTIONNAME]", to search for |
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154 TPtr sectionToken=iToken->Des(); |
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155 _LIT(sectionTokenFmtString,"[%S]"); |
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156 sectionToken.Format(sectionTokenFmtString,&aSectName); |
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157 |
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158 // Search for next occurrence of aSectName |
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159 TInt posSB = SearchBuf.Find(sectionToken); |
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160 |
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161 // If not found, return |
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162 if (posSB==KErrNotFound) |
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163 return(EFalse); |
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164 |
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165 // Check this is at beginning of line (ie. non-commented) |
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166 // ie. Check preceding char was LF |
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167 if(posSB>0) |
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168 { |
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169 // Create a Buffer, starting one char before found subBuf |
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170 TPtrC CharBefore(SearchBuf.Right(SearchBuf.Length()-posSB+1)); |
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171 // Check first char is end of prev |
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172 if(CharBefore[0] == '\n') |
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173 { |
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174 FoundSection = ETrue; // found |
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175 posI = posI + posSB; |
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176 } |
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177 else |
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178 { |
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179 posI = posI + posSB + 1; // try again |
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180 } |
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181 } |
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182 else |
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183 { |
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184 FoundSection = ETrue; |
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185 } |
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186 |
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187 } // while ( ! FoundSection ) |
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188 |
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189 // Set start of section, after section name, (incl '[' and ']') |
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190 posStartOfSection = posI + aSectName.Length() + 2; |
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191 |
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192 // Set end of section, by finding begin of next section or end |
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193 SearchBuf.Set(iPtr.Mid(posI)); |
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194 _LIT(nextSectionBuf,"\n["); |
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195 TInt posSB = SearchBuf.Find(nextSectionBuf); |
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196 if(posSB != KErrNotFound) |
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197 { |
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198 posEndOfSection = posI + posSB; |
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199 } |
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200 else |
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201 { |
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202 posEndOfSection = iPtr.Length(); |
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203 } |
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204 |
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205 } // if( aSectName.Length() > 0 ) |
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206 |
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207 // Look for key in ini file data Buffer |
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208 posI = posStartOfSection; |
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209 TBool FoundKey(false); |
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210 while ( ! FoundKey ) |
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211 { |
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212 // Search for next occurrence of aKeyName |
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213 SearchBuf.Set(iPtr.Mid(posI,posEndOfSection-posI)); |
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214 TInt posSB = SearchBuf.Find(aKeyName); |
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215 |
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216 // If not found, return |
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217 if (posSB==KErrNotFound) |
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218 return(EFalse); |
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219 |
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220 // Check this is at beginning of line (ie. non-commented) |
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221 // ie. Check preceding char was CR or LF |
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222 if(posSB>0) |
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223 { |
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224 // Create a Buffer, starting one char before found subBuf |
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225 TPtrC CharBefore(SearchBuf.Right(SearchBuf.Length()-posSB+1)); |
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226 // Check if the first char is end of prev and also check |
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227 // if the token found is not a substring of another string |
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228 TBool beginningOK = ((CharBefore[0] == '\n') || (CharBefore[0] == ' ') || (CharBefore[0] == '\t')); |
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229 TBool endingOK = ((CharBefore[aKeyName.Length()+1] == '=') || (CharBefore[aKeyName.Length()+1] == ' ') || (CharBefore[aKeyName.Length()+1] == '\t')); |
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230 if (beginningOK && endingOK) |
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231 { |
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232 FoundKey = ETrue; |
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233 posI = posI + posSB; |
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234 } |
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235 else |
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236 { |
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237 posI = posI + posSB + 1; |
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238 } |
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239 } |
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240 else |
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241 { |
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242 FoundKey = ETrue; |
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243 } |
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244 } // while ( ! FoundKey ) |
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245 |
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246 // Set pos, to just after '=' sign |
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247 SearchBuf.Set(iPtr.Mid(posI)); |
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248 TInt posSB = SearchBuf.Locate('='); |
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249 if(posSB==KErrNotFound) // Illegal format, should flag this... |
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250 return(EFalse); |
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251 |
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252 // Identify start and end of data (EOL or EOF) |
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253 posI = posI + posSB + 1; // 1 char after '=' |
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254 TInt posValStart = posI; |
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255 TInt posValEnd; |
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256 SearchBuf.Set(iPtr.Mid(posI)); |
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257 posSB = SearchBuf.Locate('\r'); |
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258 if(posSB!=KErrNotFound) |
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259 { |
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260 posValEnd = posI + posSB; |
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261 } |
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262 else |
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263 { |
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264 posValEnd = iPtr.Length(); |
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265 } |
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266 |
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267 // Check we are still in the section requested |
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268 if( aSectName.Length() > 0 ) |
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269 { |
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270 if( posValEnd > posEndOfSection ) |
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271 { |
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272 return(EFalse); |
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273 } |
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274 } |
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275 // Parse Buffer from posn of key |
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276 // Start one space after '=' |
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277 TLex lex(iPtr.Mid(posValStart, posValEnd-posValStart)); |
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278 lex.SkipSpaceAndMark(); // Should be at the start of the data |
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279 aResult.Set(lex.MarkedToken().Ptr(),posValEnd-posValStart - lex.Offset() ); |
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280 return(ETrue); |
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281 } |
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282 |
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283 // |
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284 TBool CTestIniData::FindVar(const TDesC &aKeyName, TInt &aResult) |
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285 { |
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286 TPtrC ptr(NULL,0); |
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287 if (FindVar(aKeyName,ptr)) |
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288 { |
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289 TLex lex(ptr); |
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290 if (lex.Val(aResult)==KErrNone) |
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291 return(ETrue); |
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292 } |
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293 return(EFalse); |
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294 } |
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295 |
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296 // |
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297 TBool CTestIniData::FindVar(const TDesC &aSection,const TDesC &aKeyName,TInt &aResult) |
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298 { |
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299 TPtrC ptr(NULL,0); |
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300 if (FindVar(aSection,aKeyName,ptr)) |
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301 { |
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302 TLex lex(ptr); |
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303 if (lex.Val(aResult)==KErrNone) |
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304 return(ETrue); |
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305 } |
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306 return(EFalse); |
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307 } |
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308 |