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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 // INIFILE.CPP |
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15 // Defines the class CIniFile for accessing ini file. |
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16 // is used by the test harness in t_Usbman_dummyCC.mmp |
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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 #include <f32file.h> |
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25 #include "LegacyParser.h" |
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26 |
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27 const TUint KTokenSize = 32; |
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28 _LIT(KDefaultIniFileDir,"\\"); |
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29 |
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30 void CIniFile::Panic(TIniPanic aPanic) |
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31 { |
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32 _LIT(KIniData,"CIniFile"); |
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33 User::Panic(KIniData,aPanic); |
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34 } |
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35 |
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36 CIniFile::CIniFile() |
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37 : iPtr(NULL,0) |
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38 { |
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39 } |
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40 |
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41 CIniFile::~CIniFile() |
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42 { |
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43 delete (TText*)iPtr.Ptr(); |
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44 delete iToken; |
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45 delete iName; |
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46 } |
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47 |
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48 CIniFile* CIniFile::NewL(const TDesC& aName) |
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49 /** |
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50 * Factory function for CIniFile. |
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51 * |
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52 * @param aName The name of the ini file to be used, e.g. "GPRSBTT.INI". |
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53 */ |
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54 { |
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55 CIniFile* self = new(ELeave) CIniFile; |
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56 CleanupStack::PushL(self); |
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57 self->ConstructL(aName, KDefaultIniFileDir); |
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58 CleanupStack::Pop(self); |
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59 return self; |
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60 } |
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61 |
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62 CIniFile* CIniFile::NewL(const TDesC& aName, const TDesC& aPath) |
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63 /** |
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64 * Factory function for CIniFile that allows the user to specify both filename |
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65 * and path |
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66 * |
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67 * @param aName The name of the ini file to be used, e.g. "GPRSBTT.INI". |
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68 * @param aPath The location of the file e.g. "\\system\\data\\". |
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69 */ |
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70 { |
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71 CIniFile* self = new(ELeave) CIniFile; |
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72 CleanupStack::PushL(self); |
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73 self->ConstructL(aName, aPath); |
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74 CleanupStack::Pop(self); |
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75 return self; |
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76 } |
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77 |
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78 void CIniFile::ConstructL(const TDesC& aName, const TDesC& aPath) |
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79 /** |
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80 * Allocate a buffer and Read file's contents into iPtr |
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81 * |
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82 * @param aName is the name of the ini file to be used, e.g. "REFTSY.INI" |
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83 */ |
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84 { |
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85 iToken = HBufC::NewL(KTokenSize+2); // 2 extra chars for [] |
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86 |
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87 RFs fs; |
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88 User::LeaveIfError(fs.Connect()); |
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89 CleanupClosePushL(fs); |
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90 |
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91 TFindFile ff(fs); |
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92 |
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93 #ifdef BUILD_FOR_JETSTREAM |
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94 // Jetstream |
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95 // For security reasons ini files are in the private directory for the |
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96 // comms-infras/rootserver (C32exe) process |
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97 TBuf<KMaxPath> privatePath; |
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98 User::LeaveIfError(fs.PrivatePath(privatePath)); |
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99 User::LeaveIfError(ff.FindByDir(aName, privatePath)); |
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100 #else |
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101 |
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102 User::LeaveIfError(ff.FindByDir(aName, aPath)); |
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103 |
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104 #endif |
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105 |
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106 iName=ff.File().AllocL(); |
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107 |
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108 RFile file; |
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109 TInt size; |
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110 User::LeaveIfError(file.Open(fs,*iName,EFileStreamText|EFileRead|EFileShareReadersOnly)); |
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111 CleanupClosePushL(file); |
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112 |
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113 User::LeaveIfError(file.Size(size)); |
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114 |
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115 |
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116 TText* data = REINTERPRET_CAST(TText*, User::AllocL(size)); |
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117 iPtr.Set(data, size/sizeof(TText), size/sizeof(TText)); |
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118 TPtr8 dest(REINTERPRET_CAST(TUint8*,data), 0, size); |
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119 User::LeaveIfError(file.Read(dest)); |
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120 |
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121 TUint8* ptr = REINTERPRET_CAST(TUint8*,data); |
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122 |
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123 // |
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124 // This is orderred as FEFF assuming the processor is Little Endian |
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125 // The data in the file is FFFE. PRR 28/9/98 |
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126 // |
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127 if(size>= STATIC_CAST(TInt,sizeof(TText)) && iPtr[0]==0xFEFF) |
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128 { |
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129 Mem::Copy(ptr, ptr+sizeof(TText), size-sizeof(TText)); |
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130 iPtr.Set(data, size/sizeof(TText)-1, size/sizeof(TText)-1); |
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131 } |
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132 else if(size) |
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133 { |
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134 TText* newdata = REINTERPRET_CAST(TText*, |
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135 User::AllocL(size*sizeof(TText))); |
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136 iPtr.Set(newdata, size, size); |
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137 TInt i; |
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138 for(i=0 ; i<size ; ++i) |
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139 iPtr[i]=ptr[i]; |
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140 delete data; |
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141 } |
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142 |
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143 CleanupStack::PopAndDestroy(); // file |
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144 CleanupStack::PopAndDestroy(); // fs |
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145 } |
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146 |
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147 TBool CIniFile::FindVar(const TDesC &aSection, |
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148 const TDesC &aVarName, |
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149 TPtrC &aResult) |
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150 // |
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151 // Find a variable's value given a section name and a var name |
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152 // |
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153 { |
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154 __ASSERT_DEBUG(aSection.Length()<=(TInt)KTokenSize,Panic(ESectionNameTooBig)); |
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155 __ASSERT_DEBUG(aVarName.Length()<=(TInt)KTokenSize,Panic(EVarNameTooBig)); |
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156 |
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157 TPtr sectionToken=iToken->Des(); |
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158 _LIT(KSectionTokenString,"[%S]"); |
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159 sectionToken.Format(KSectionTokenString,&aSection); |
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160 TInt sectionStart=iPtr.Find(sectionToken); |
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161 TInt ret = ETrue; |
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162 if (sectionStart==KErrNotFound) |
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163 ret = EFalse; |
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164 else |
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165 { |
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166 TPtrC section=iPtr.Mid(sectionStart); |
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167 sectionStart+=section.Find(TPtrC(_S("]"))); |
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168 if (sectionStart==KErrNotFound) |
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169 ret = EFalse; |
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170 else |
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171 { |
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172 sectionStart++; |
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173 section.Set(iPtr.Mid(sectionStart)); |
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174 |
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175 TInt sectionEnd=section.Find(TPtrC(_S("["))); |
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176 if (sectionEnd==KErrNotFound) |
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177 sectionEnd=iPtr.Length()-sectionStart; |
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178 else |
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179 sectionEnd--; |
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180 section.Set(iPtr.Mid(sectionStart,sectionEnd)); |
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181 TPtr varToken=iToken->Des(); |
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182 _LIT(KVarTokenString,"%S="); |
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183 varToken.Format(KVarTokenString,&aVarName); |
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184 TInt pos=section.Find(varToken); |
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185 if (pos==KErrNotFound) |
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186 ret = EFalse; |
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187 else |
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188 { |
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189 // 'lex' points at the start of the data |
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190 TPtrC lex(section.Mid(pos)); |
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191 TInt startpos = lex.Locate(TChar('=')); |
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192 startpos++; // startpos points immediately after the =. |
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193 while ( TChar(lex[startpos]).IsSpace() ) |
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194 startpos++; // skip to start of data |
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195 TInt endpos = lex.Locate(TChar('\n')); // assumes \n is after =. |
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196 if ( endpos == KErrNotFound ) // may not be \n on last line |
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197 endpos = section.Length()-1; |
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198 aResult.Set(lex.Mid(startpos).Ptr(),endpos-startpos-1); |
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199 } |
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200 } |
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201 } |
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202 |
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203 return ret; |
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204 } |
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205 |
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206 TBool CIniFile::FindVar(const TDesC &aSection,const TDesC &aVarName, |
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207 TInt &aResult) |
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208 { |
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209 TInt ret = EFalse; |
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210 TPtrC ptr(NULL,0); |
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211 if (FindVar(aSection,aVarName,ptr)) |
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212 { |
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213 TLex lex(ptr); |
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214 if (lex.Val(aResult)==KErrNone) |
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215 ret = ETrue; |
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216 } |
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217 |
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218 return ret; |
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219 } |
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220 |
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221 // |
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222 // End of file |