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1 // Copyright (c) 2002-2009 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 // Defines the class CIniFile for accessing ini 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 #include "inifile.h" |
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23 #include <f32file.h> |
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24 |
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25 CIniFile::CIniFile() |
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26 : iPtr(NULL,0) |
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27 { |
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28 } |
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29 |
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30 EXPORT_C CIniFile::~CIniFile() |
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31 { |
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32 delete (TText*)iPtr.Ptr(); |
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33 delete iToken; |
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34 delete iName; |
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35 } |
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36 |
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37 EXPORT_C CIniFile* CIniFile::NewL(const TDesC& aName, const TDesC& aPath) |
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38 /** |
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39 * Factory function for CIniFile.which passes in the path of the file and its name. |
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40 * |
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41 * @param aName The name of the ini file to be used, e.g. "TRPAT.INI". |
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42 */ |
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43 { |
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44 CIniFile* p = new(ELeave) CIniFile(); |
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45 CleanupStack::PushL(p); |
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46 p->ConstructL(aName, aPath); |
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47 CleanupStack::Pop(p); |
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48 |
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49 return p; |
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50 } |
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51 |
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52 void CIniFile::ConstructL(const TDesC& aName, const TDesC& aPath) |
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53 /** |
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54 * Allocate a buffer and Read file's contents into iPtr |
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55 * |
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56 */ |
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57 { |
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58 iToken = HBufC::NewL(KTokenSize+2); // 2 extra chars for [] |
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59 |
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60 TAutoClose<RFs> fs; |
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61 User::LeaveIfError(fs.iObj.Connect()); |
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62 fs.PushL(); |
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63 |
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64 TFindFile ff(fs.iObj); |
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65 |
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66 // For security reasons ini files are in the private directory for the |
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67 // comms-infras/rootserver (C32exe) process. |
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68 TBuf<KMaxPath> privatePath; |
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69 |
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70 privatePath = aPath; |
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71 User::LeaveIfError(ff.FindByDir(aName, privatePath)); |
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72 |
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73 iName=ff.File().AllocL(); |
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74 |
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75 TAutoClose<RFile> file; |
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76 TInt size; |
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77 User::LeaveIfError(file.iObj.Open(fs.iObj,*iName,EFileStreamText|EFileRead|EFileShareReadersOnly)); |
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78 file.PushL(); |
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79 |
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80 User::LeaveIfError(file.iObj.Size(size)); |
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81 |
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82 |
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83 TText* data = REINTERPRET_CAST(TText*, User::AllocL(size)); |
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84 iPtr.Set(data, size/sizeof(TText), size/sizeof(TText)); |
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85 TPtr8 dest(REINTERPRET_CAST(TUint8*,data), 0, size); |
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86 User::LeaveIfError(file.iObj.Read(dest)); |
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87 |
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88 TUint8* ptr = REINTERPRET_CAST(TUint8*,data); |
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89 |
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90 // |
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91 // This is orderred as FEFF assuming the processor is Little Endian |
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92 // The data in the file is FFFE. PRR 28/9/98 |
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93 // |
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94 if(size>= STATIC_CAST(TInt,sizeof(TText)) && iPtr[0]==0xFEFF) |
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95 { |
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96 Mem::Copy(ptr, ptr+sizeof(TText), size-sizeof(TText)); |
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97 iPtr.Set(data, size/sizeof(TText)-1, size/sizeof(TText)-1); |
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98 } |
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99 else if(size) |
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100 { |
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101 TText* newdata = REINTERPRET_CAST(TText*, |
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102 User::AllocL(size*sizeof(TText))); |
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103 iPtr.Set(newdata, size, size); |
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104 TInt i; |
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105 for(i=0 ; i<size ; ++i) |
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106 iPtr[i]=ptr[i]; |
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107 delete data; |
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108 } |
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109 |
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110 file.Pop(); |
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111 fs.Pop(); |
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112 } |
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113 |
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114 EXPORT_C TBool CIniFile::FindVar(const TDesC &aSection, |
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115 const TDesC &aVarName, |
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116 TPtrC &aResult) |
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117 // |
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118 // Find a variable's value given a section name and a var name |
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119 // |
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120 { |
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121 __ASSERT_DEBUG(aSection.Length()<=KTokenSize, User::Panic(_L("CIniFile"),ESectionNameTooBig)); |
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122 __ASSERT_DEBUG(aVarName.Length()<=KTokenSize,User::Panic(_L("CIniFile"),EVarNameTooBig)); |
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123 |
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124 TPtr sectionToken=iToken->Des(); |
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125 _LIT(KSectionTokenString,"[%S]"); |
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126 sectionToken.Format(KSectionTokenString,&aSection); |
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127 TInt sectionStart=iPtr.Find(sectionToken); |
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128 TInt ret = ETrue; |
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129 if (sectionStart==KErrNotFound) |
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130 ret = EFalse; |
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131 else |
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132 { |
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133 TPtrC section=iPtr.Mid(sectionStart); |
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134 sectionStart+=section.Find(TPtrC(_S("]"))); |
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135 if (sectionStart==KErrNotFound) |
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136 ret = EFalse; |
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137 else |
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138 { |
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139 sectionStart++; |
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140 section.Set(iPtr.Mid(sectionStart)); |
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141 |
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142 TInt sectionEnd=section.Find(TPtrC(_S("["))); |
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143 if (sectionEnd==KErrNotFound) |
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144 sectionEnd=iPtr.Length()-sectionStart; |
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145 else |
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146 sectionEnd--; |
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147 section.Set(iPtr.Mid(sectionStart,sectionEnd)); |
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148 TPtr varToken=iToken->Des(); |
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149 _LIT(KVarTokenString1,"%S="); |
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150 _LIT(KVarTokenString2,"%S ="); |
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151 varToken.Format(KVarTokenString1,&aVarName); |
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152 TInt pos=section.Find(varToken); |
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153 |
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154 if (pos == KErrNotFound) |
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155 { |
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156 varToken.Format(KVarTokenString2,&aVarName); |
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157 pos=section.Find(varToken); |
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158 } |
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159 |
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160 if (pos==KErrNotFound) |
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161 { |
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162 ret = EFalse; |
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163 } |
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164 else |
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165 { |
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166 // 'lex' points at the start of the data |
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167 TPtrC lex(section.Mid(pos)); |
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168 TInt startpos = lex.Locate(TChar('=')); |
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169 startpos++; // startpos points immediately after the =. |
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170 while ( TChar(lex[startpos]).IsSpace() ) |
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171 startpos++; // skip to start of data |
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172 TInt endpos = lex.Locate(TChar('\n')); // assumes \n is after =. |
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173 if ( endpos == KErrNotFound ) // may not be \n on last line |
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174 endpos = lex.Length() + 1; |
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175 aResult.Set(lex.Mid(startpos).Ptr(),endpos-startpos-1); |
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176 } |
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177 } |
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178 } |
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179 |
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180 return ret; |
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181 } |
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182 |
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183 // |
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184 // End of file |