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1 /* |
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2 * Copyright (c) 2002-2005 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Implementation for XCFWLocalizer |
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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 |
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20 // INCLUDE FILES |
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21 #include "xcfwlocalizer.h" |
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22 #include <bautils.h> |
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23 #include <e32std.h> |
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24 #include <badesca.h> |
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25 #include <s32file.h> |
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26 #include <s32strm.h> |
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27 #include <utf.h> |
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28 #include <pathinfo.h> |
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29 // CONSTANTS |
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30 _LIT8( KEntityStart, "!ENTITY " ); |
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31 _LIT( KDrivePathChars, ":\\" ); |
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32 const TInt KDefaultGranularity = 10; |
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33 //Maximum entity declaration length is rather long because |
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34 //in RND builds the DTD files contain a lot of comments |
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35 //and parsing the file requires long enough buffer. |
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36 const TInt KMaxEntityDeclLen = 1024; |
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37 const TInt KPathStartLoc = 2; |
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38 |
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39 // ============================ MEMBER FUNCTIONS =============================== |
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40 |
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41 // ----------------------------------------------------------------------------- |
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42 // CXCFWLocalizer::CXCFWLocalizer |
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43 // C++ default constructor can NOT contain any code, that |
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44 // might leave. |
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45 // ----------------------------------------------------------------------------- |
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46 // |
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47 CXCFWLocalizer::CXCFWLocalizer() |
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48 { |
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49 } |
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50 |
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51 // ----------------------------------------------------------------------------- |
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52 // CXCFWLocalizer::ConstructL |
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53 // Symbian 2nd phase constructor can leave. |
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54 // ----------------------------------------------------------------------------- |
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55 // |
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56 void CXCFWLocalizer::ConstructL() |
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57 { |
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58 iReferences = new ( ELeave ) CDesCArraySeg( KDefaultGranularity ); |
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59 iLocStrings = new ( ELeave ) CDesCArraySeg( KDefaultGranularity ); |
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60 } |
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61 |
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62 // ----------------------------------------------------------------------------- |
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63 // CXCFWLocalizer::NewL |
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64 // Two-phased constructor with Node Data initializer. |
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65 // ----------------------------------------------------------------------------- |
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66 // |
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67 CXCFWLocalizer* CXCFWLocalizer::NewL() |
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68 { |
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69 CXCFWLocalizer* self = new( ELeave ) CXCFWLocalizer; |
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70 |
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71 CleanupStack::PushL( self ); |
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72 self->ConstructL(); |
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73 CleanupStack::Pop( self ); |
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74 |
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75 return self; |
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76 } |
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77 |
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78 |
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79 // Destructor |
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80 CXCFWLocalizer::~CXCFWLocalizer() |
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81 { |
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82 delete iReferences; |
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83 delete iLocStrings; |
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84 } |
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85 |
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86 // ----------------------------------------------------------------------------- |
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87 // CXCFWLocalizer::LoadDTDL |
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88 // Load entity references from DTD file |
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89 // Function searches the DTD file first from session path (which is where |
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90 // the loaded XML file is located). If it is not found there, it is sought |
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91 // from ROM drive at the same location. |
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92 // If function can't find loc file for current language, it will search the |
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93 // possible replacement using language downgrade path. |
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94 // ----------------------------------------------------------------------------- |
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95 // |
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96 void CXCFWLocalizer::LoadDTDL( |
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97 const TDesC& aDTD, |
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98 RFs& aFileSystem, |
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99 TRequestStatus* aStatus ) |
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100 { |
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101 const TInt KMaxLangCodeLen = 5; |
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102 const TInt KMinLangCodeLen = 2; |
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103 |
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104 TBuf<KMaxLangCodeLen> lcstring; |
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105 |
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106 delete iLocStrings; |
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107 iLocStrings = NULL; |
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108 delete iReferences; |
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109 iLocStrings = NULL; |
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110 iReferences = new ( ELeave ) CDesCArraySeg( KDefaultGranularity ); |
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111 iLocStrings = new ( ELeave ) CDesCArraySeg( KDefaultGranularity ); |
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112 |
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113 iStatus = aStatus; |
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114 |
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115 |
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116 //First get filepath without drive character |
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117 TPtrC filepath; |
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118 if ( aDTD.Find( KDrivePathChars ) != KErrNotFound ) |
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119 { |
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120 filepath.Set( aDTD.Mid( KPathStartLoc ) ); |
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121 } |
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122 else |
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123 { |
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124 filepath.Set( aDTD ); |
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125 } |
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126 |
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127 // format filepath with current language data |
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128 TLanguage langcode = User::Language(); //current language |
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129 lcstring.Num( (TInt64)langcode ); //to get decimal langcode length in characters |
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130 //use always at least 2 digits. |
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131 TInt codelen = lcstring.Length() > 1 ? lcstring.Length() : KMinLangCodeLen; |
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132 |
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133 HBufC* locfile = HBufC::NewL( aDTD.Length() + KMaxLangCodeLen ); |
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134 CleanupStack::PushL( locfile ); |
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135 locfile->Des().Format( filepath, codelen, langcode ); |
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136 |
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137 //Check for file, if not found, check language downgrade path |
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138 if( !BaflUtils::FileExists( aFileSystem, locfile->Des() ) ) |
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139 { |
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140 RArray<TLanguage> langs; |
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141 BaflUtils::GetDowngradePathL( aFileSystem, langcode, langs ); |
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142 //add current language to array for ROM fetching |
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143 langs.Append( langcode ); |
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144 TInt current = langs.Count() - 1; |
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145 do |
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146 { |
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147 lcstring.Num( (TInt64)langs[current] ); |
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148 codelen = lcstring.Length()>1?lcstring.Length():KMinLangCodeLen; |
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149 locfile->Des().Format( filepath, codelen, langs[current] ); |
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150 current--; |
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151 } |
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152 while ( current >= 0 && |
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153 !BaflUtils::FileExists( aFileSystem, locfile->Des() ) ); |
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154 |
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155 //If still not found, check from ROM |
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156 if ( !BaflUtils::FileExists( aFileSystem, locfile->Des() ) ) |
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157 { |
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158 current = langs.Count() - 1; |
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159 do { |
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160 lcstring.Num( (TInt64)langs[current] ); |
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161 codelen = lcstring.Length()>1?lcstring.Length():KMinLangCodeLen; |
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162 locfile->Des().Format( filepath, codelen, langs[current] ); |
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163 locfile->Des().Insert( 0, PathInfo::RomRootPath().Left( KPathStartLoc ) ); |
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164 current--; |
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165 } while ( current >= 0 && |
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166 !BaflUtils::FileExists( aFileSystem, locfile->Des() ) ); |
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167 } |
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168 langs.Reset(); |
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169 langs.Close(); |
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170 } |
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171 |
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172 |
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173 if ( BaflUtils::FileExists( aFileSystem, locfile->Des() ) ) |
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174 { |
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175 RFile infile; |
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176 User::LeaveIfError( infile.Open(aFileSystem, locfile->Des(), EFileRead) ); |
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177 CleanupClosePushL( infile ); |
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178 RFileReadStream readStream( infile,0 ); |
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179 CleanupClosePushL( readStream ); |
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180 |
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181 ParseDTDL( readStream ); |
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182 |
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183 CleanupStack::Pop( &readStream ); //readStream |
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184 CleanupStack::Pop( &infile ); //infile |
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185 } |
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186 |
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187 |
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188 CleanupStack::PopAndDestroy( locfile ); |
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189 |
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190 *aStatus = KRequestPending; |
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191 User::RequestComplete( aStatus, KErrNone ); |
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192 |
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193 } |
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194 |
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195 // ----------------------------------------------------------------------------- |
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196 // CXCFWLocalizer::LoadDTDL |
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197 // Parse DTD file. Function assumes that the DTD contains ENTITY declarations |
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198 // only. |
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199 // ----------------------------------------------------------------------------- |
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200 // |
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201 void CXCFWLocalizer::ParseDTDL( RFileReadStream& aStream ) |
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202 { |
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203 |
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204 TChar space = ' '; |
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205 TChar quote = '"'; |
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206 TChar lessthan = '<'; |
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207 TChar morethan = '>'; |
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208 |
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209 HBufC8* buf = HBufC8::NewLC( KMaxEntityDeclLen ); |
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210 TPtr8 p( buf->Des() ); |
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211 |
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212 TInt streamError = KErrNone; |
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213 |
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214 do |
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215 { |
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216 // Read until declaration start "<" |
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217 TRAP( streamError, aStream.ReadL( p , lessthan)); |
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218 // This might be EOF, or other problem, we exit |
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219 if( streamError != KErrNone ) |
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220 { |
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221 aStream.Close(); |
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222 } |
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223 else |
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224 { |
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225 aStream.ReadL( p , space); // Read until space " " |
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226 |
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227 // entity declaration handled, others are ignored |
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228 if ( p.CompareC( KEntityStart ) == 0 ) |
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229 { |
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230 p.Zero(); |
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231 aStream.ReadL( p , space); // Read the reference name |
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232 p.TrimRight(); // Delete space from the end |
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233 |
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234 HBufC* ucsbuf = HBufC::NewLC( p.Length() ); |
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235 TPtr ucsp( ucsbuf->Des() ); |
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236 CnvUtfConverter::ConvertToUnicodeFromUtf8( ucsp, p ); |
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237 iReferences->AppendL( ucsp ); |
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238 CleanupStack::PopAndDestroy( ucsbuf ); |
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239 |
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240 p.Zero(); |
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241 aStream.ReadL( p , quote); |
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242 p.Zero(); |
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243 aStream.ReadL( p , quote); |
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244 p.SetLength(p.Length() - 1); // Delete quotation from the end |
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245 |
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246 //Seek for percentage char symbol and do necessary conversion |
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247 const TInt KUCEntityLen = 8; |
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248 _LIT8( KUniCodeChar, "%"); |
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249 _LIT8( KPctage, "%" ); |
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250 TInt pct = p.Find( KUniCodeChar ); |
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251 while ( pct != KErrNotFound ) |
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252 { |
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253 HBufC8* tmp = HBufC8::NewLC( KMaxEntityDeclLen ); |
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254 tmp->Des().Copy ( p.Left( pct ) ); |
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255 tmp->Des().Append( KPctage ); |
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256 tmp->Des().Append( p.Mid( pct + KUCEntityLen ) ); |
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257 p.Copy ( tmp->Des() ); |
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258 CleanupStack::PopAndDestroy( tmp ); |
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259 pct = p.Find( KUniCodeChar ); |
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260 } |
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261 |
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262 |
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263 ucsbuf = HBufC::NewLC( p.Length() ); |
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264 ucsp.Set ( ucsbuf->Des() ); |
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265 CnvUtfConverter::ConvertToUnicodeFromUtf8( ucsp, p ); |
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266 iLocStrings->AppendL( ucsp ); |
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267 CleanupStack::PopAndDestroy( ucsbuf ); |
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268 |
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269 |
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270 p.Zero(); |
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271 aStream.ReadL( p , morethan); // Read until declaration ends ">" |
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272 } |
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273 } |
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274 |
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275 } while ( streamError == KErrNone ); |
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276 |
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277 CleanupStack::PopAndDestroy(buf); |
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278 } |
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279 |
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280 // ----------------------------------------------------------------------------- |
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281 // CXCFWLocalizer::EntityRefToText |
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282 // Gets localized text value for given entity reference |
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283 // ----------------------------------------------------------------------------- |
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284 // |
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285 TInt CXCFWLocalizer::EntityRefToText( |
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286 TDesC& aRef, |
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287 TPtrC& aText) |
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288 { |
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289 TInt count = iReferences->Count(); |
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290 TInt ret = KErrNotFound; |
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291 for ( TInt i = 0; i < count && ret == KErrNotFound; i++ ) |
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292 { |
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293 if ( iReferences->MdcaPoint( i ).Compare( |
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294 aRef.Mid(1, aRef.Length()-2) ) == 0 ) |
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295 { |
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296 ret = KErrNone; |
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297 aText.Set( iLocStrings->MdcaPoint( i ) ); |
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298 } |
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299 } |
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300 return ret; |
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301 } |
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302 |
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303 // ----------------------------------------------------------------------------- |
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304 // CXCFWLocalizer::TextToEntityRef |
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305 // Gets entity reference for given text |
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306 // ----------------------------------------------------------------------------- |
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307 // |
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308 TInt CXCFWLocalizer::TextToEntityRef( |
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309 TDesC& aText, |
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310 TPtrC& aRef ) |
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311 { |
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312 TInt count = iLocStrings->Count(); |
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313 TInt ret = KErrNotFound; |
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314 for ( TInt i = 0; i < count && ret == KErrNotFound; i++ ) |
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315 { |
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316 if ( iLocStrings->MdcaPoint( i ).Compare( aText ) == 0 ) |
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317 { |
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318 ret = KErrNone; |
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319 aRef.Set( iReferences->MdcaPoint( i ) ); |
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320 } |
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321 } |
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322 return ret; |
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323 } |
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324 |
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325 // ----------------------------------------------------------------------------- |
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326 // CXCFWLocalizer::LastError |
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327 // Returns error code from the parser. |
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328 // ----------------------------------------------------------------------------- |
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329 // |
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330 TInt CXCFWLocalizer::LastError() |
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331 { |
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332 TInt ret = KErrNone; |
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333 |
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334 if ( !iReferences || !iLocStrings ) |
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335 { |
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336 ret = KErrNotReady; |
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337 } |
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338 else |
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339 { |
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340 if ( iReferences->Count() != iLocStrings->Count() ) |
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341 { |
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342 ret = KErrCorrupt; |
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343 } |
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344 } |
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345 |
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346 return ret; |
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347 |
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348 } |
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349 |
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350 |
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351 |
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352 // End of File |