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1 /* |
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2 * Copyright (c) 2004 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: Sources |
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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 // 1.2 Changes: nsmlxmlparser module added |
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20 |
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21 // ------------------------------------------------------------------------------------------------ |
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22 // Includes |
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23 // ------------------------------------------------------------------------------------------------ |
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24 #include <s32buf.h> |
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25 #include <s32file.h> |
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26 #include <nsmlfolderparser.h> |
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27 #include "nsmlparserconstants.h" |
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28 |
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29 |
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30 // ------------------------------------------------------------------------------------------------ |
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31 // |
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32 // CNSmlXmlParser methods |
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33 // |
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34 // ------------------------------------------------------------------------------------------------ |
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35 |
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36 // ------------------------------------------------------------------------------------------------ |
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37 // Constructor |
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38 // ------------------------------------------------------------------------------------------------ |
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39 EXPORT_C CNSmlXmlParser::CNSmlXmlParser() |
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40 { |
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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 // Destructor. |
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46 // ------------------------------------------------------------------------------------------------ |
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47 EXPORT_C CNSmlXmlParser::~CNSmlXmlParser() |
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48 { |
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49 if( iBuffer ) delete iBuffer; |
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50 if ( iCompleteBuffer ) delete iCompleteBuffer; |
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51 } |
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52 |
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53 |
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54 // ------------------------------------------------------------------------------------------------ |
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55 // Parses the given string for cdata areas and entitys. If a cdata area is |
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56 // found, the data in it is skipped over. The entities outside cdata are converted |
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57 // into characters they represent (but only if cdata is found). |
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58 // Note: This method is intended for processing the CDATA used right after <Data>. |
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59 // I.e. this method removes the cdata-elements used for wrapping the whole xml data |
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60 // and processes the string so that the inner cdatas used in the xml become valid. |
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61 // THIS METHOD SHOULD BE CALLED RIGHT IN THE BEGINNING OF PARSING IF <Data>-BLOCK |
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62 // IS WRAPPED WITHIN CDATA. |
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63 // ------------------------------------------------------------------------------------------------ |
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64 void CNSmlXmlParser::PreProcessL( HBufC8* aXml ) const |
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65 { |
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66 // take a modifiable pointer |
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67 TPtr8 xml = aXml->Des(); |
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68 |
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69 // the string used for searching and moving in the string |
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70 TPtrC8 searchString(*aXml); |
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71 |
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72 // the current position in the original string |
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73 TInt searchStartPos = 0; |
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74 |
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75 // find the first cdata start |
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76 TInt cdataStartPos = searchString.Find(KCDataStart); |
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77 |
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78 // If CDATA is not found from beginning then data is not inside CDATA and then |
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79 // preprocessing is not needed |
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80 if ( cdataStartPos != 0 ) |
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81 { |
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82 return; |
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83 } |
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84 |
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85 TInt cdataEndPos = KErrNotFound; |
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86 |
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87 // while cdata is found |
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88 while ( cdataStartPos != KErrNotFound ) |
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89 { |
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90 cdataStartPos += searchStartPos; |
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91 |
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92 // find an end of cdata before entities are converted |
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93 cdataEndPos = searchString.Find(KCDataEnd); |
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94 |
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95 // convert entities between search start and cdata start |
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96 TInt entityChange = EntitiesToCharactersL(aXml, searchStartPos, cdataStartPos); |
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97 xml.Set(aXml->Des()); |
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98 cdataStartPos += entityChange; |
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99 |
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100 if ( cdataEndPos != KErrNotFound ) |
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101 { |
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102 cdataEndPos += entityChange; |
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103 cdataEndPos += searchStartPos; |
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104 |
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105 // if the end is before start -> error |
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106 if (cdataEndPos < cdataStartPos) |
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107 User::Leave( EInvalidCDataStructure ); |
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108 |
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109 // remove cdata end |
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110 xml.Delete(cdataEndPos, KCDataEnd().Length()); |
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111 // remove cdata start |
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112 xml.Delete(cdataStartPos, KCDataStart().Length()); |
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113 |
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114 searchStartPos = cdataEndPos - KCDataStart().Length(); |
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115 searchString.Set( xml.Right(xml.Length() - searchStartPos) ); |
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116 } |
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117 else |
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118 { |
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119 // the end of cdata was not found or cdata end was before start -> error |
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120 User::Leave( EInvalidCDataStructure ); |
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121 } |
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122 |
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123 // find a new cdata start that is after the found end |
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124 cdataStartPos = searchString.Find(KCDataStart); |
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125 |
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126 } |
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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 // Return the TNSmlBoolean-value's string-representation. |
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133 // ------------------------------------------------------------------------------------------------ |
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134 TPtrC8 CNSmlXmlParser::BooleanToString( const TNSmlBoolean aValue ) const |
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135 { |
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136 TPtrC8 str; |
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137 switch(aValue) |
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138 { |
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139 case EBooleanTrue: |
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140 { |
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141 str.Set(KStringTrue); |
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142 break; |
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143 } |
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144 case EBooleanFalse: |
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145 { |
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146 str.Set(KStringFalse); |
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147 break; |
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148 } |
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149 default: |
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150 { |
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151 str.Set(KStringEmpty); |
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152 } |
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153 } |
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154 |
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155 return str; |
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156 } |
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157 |
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158 |
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159 // ------------------------------------------------------------------------------------------------ |
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160 // Returns the TTime-value's string-representation. |
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161 // ------------------------------------------------------------------------------------------------ |
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162 TBuf8<KDateTimeLength> CNSmlXmlParser::DateTimeToStringL( const TTime& aValue ) const |
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163 { |
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164 TBuf<KDateTimeLength> str; |
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165 |
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166 // aValue is not changed but Z character is added to the end of string. |
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167 // Messaging uses UTC times and that is reason why time is not changed. |
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168 aValue.FormatL( str, _L("%F%Y%M%DT%H%T%SZ") ); |
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169 |
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170 // from 16-bit to 8-bit |
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171 TBuf8<KDateTimeLength> dt; |
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172 dt.Copy(str); |
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173 |
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174 return dt; |
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175 } |
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176 |
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177 |
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178 // ------------------------------------------------------------------------------------------------ |
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179 // Returns the integer value's string-representation. |
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180 // ------------------------------------------------------------------------------------------------ |
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181 TBuf8<KIntegerMaxLength> CNSmlXmlParser::IntegerToString( const TInt aValue ) const |
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182 { |
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183 TBuf8<KIntegerMaxLength> str; |
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184 str.AppendNum(aValue); |
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185 return str; |
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186 } |
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187 |
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188 |
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189 // ------------------------------------------------------------------------------------------------ |
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190 // Returns the boolean representation of the string or leaves if error (EInvalidBooleanValue). |
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191 // ------------------------------------------------------------------------------------------------ |
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192 TNSmlBoolean CNSmlXmlParser::StringToBooleanL( const TPtrC8& aValue ) const |
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193 { |
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194 if( aValue == KStringTrue ) |
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195 return EBooleanTrue; |
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196 else if( aValue == KStringFalse || aValue == KStringEmpty ) |
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197 return EBooleanFalse; |
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198 else |
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199 User::Leave(EInvalidBooleanValue); |
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200 |
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201 return EBooleanMissing; |
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202 } |
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203 |
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204 |
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205 // ------------------------------------------------------------------------------------------------ |
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206 // Returns the integer representation of the string or leaves if error (EInvalidIntegerValue). |
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207 // ------------------------------------------------------------------------------------------------ |
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208 TInt CNSmlXmlParser::StringToIntegerL( const TPtrC8& aValue ) const |
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209 { |
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210 if (aValue.Length() <= 0) |
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211 return 0; |
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212 |
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213 // convert the data to an integer |
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214 TLex8 lex(aValue); |
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215 TUint uValue = 0; |
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216 TBool isNegative = EFalse; |
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217 |
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218 TChar c = lex.Peek(); |
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219 |
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220 // check for a minus or plus sign |
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221 if ( c == '-' ) |
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222 { |
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223 isNegative = ETrue; |
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224 lex.Inc(); |
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225 } |
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226 else if ( c == '+' ) |
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227 { |
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228 lex.Inc(); |
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229 } |
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230 |
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231 TRadix radix = EDecimal; |
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232 c = lex.Peek(); |
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233 |
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234 if (c == '0') // octal or hex |
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235 { |
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236 lex.Get(); |
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237 c = lex.Get(); |
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238 if ( c == 'x' || c == 'X' ) |
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239 { |
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240 radix = EHex; |
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241 } |
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242 else |
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243 { |
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244 radix = EOctal; |
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245 lex.UnGet(); // back up |
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246 } |
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247 } |
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248 |
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249 TInt err = lex.Val(uValue, radix); |
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250 if ( err != KErrNone ) |
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251 User::Leave(EInvalidIntegerValue); |
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252 |
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253 TInt value = uValue; |
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254 |
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255 return isNegative ? value*(-1) : value; |
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256 } |
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257 |
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258 |
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259 // ------------------------------------------------------------------------------------------------ |
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260 // Returns the TTime representation of the string or leaves if error (EInvalidDatetimeValue). |
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261 // UTC times are not supported, i.e. datetimes that have Z-ending are treated as |
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262 // local times. |
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263 // ------------------------------------------------------------------------------------------------ |
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264 TTime CNSmlXmlParser::StringToTTimeL( TPtrC8& aValue ) const |
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265 { |
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266 // check that there is data |
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267 if (aValue.Length() <= 0) |
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268 User::Leave( EInvalidDatetimeValue ); |
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269 |
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270 // format the data into a TTime |
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271 |
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272 if (aValue[aValue.Length()-1] == 'Z') |
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273 { |
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274 // The datetime is in UTC, which is not supported |
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275 // no correction done, treat as local time |
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276 aValue.Set( aValue.Left( aValue.Length()-1 ) ); |
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277 } |
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278 |
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279 TDateTime datetime(0,(TMonth)0,0,0,0,0,0); |
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280 |
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281 // read datetime and check errors |
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282 |
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283 TInt error = KErrNone; |
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284 |
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285 // read year |
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286 TPtrC8 str = aValue.Left(4); |
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287 TLex8 lex(str); |
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288 TInt value; |
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289 error = lex.Val(value); |
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290 CheckDatetimeErrorL( error ); |
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291 error = datetime.SetYear(value); |
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292 CheckDatetimeErrorL( error ); |
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293 |
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294 // read month |
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295 str.Set(aValue.Mid(4, 2)); |
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296 lex.Assign(str); |
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297 error = lex.Val(value); |
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298 CheckDatetimeErrorL( error ); |
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299 --value; |
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300 error = datetime.SetMonth((TMonth)value); |
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301 CheckDatetimeErrorL( error ); |
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302 |
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303 // read day |
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304 str.Set(aValue.Mid(6, 2)); |
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305 lex.Assign(str); |
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306 error = lex.Val(value); |
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307 CheckDatetimeErrorL( error ); |
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308 --value; |
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309 error = datetime.SetDay(value); |
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310 CheckDatetimeErrorL( error ); |
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311 |
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312 // Skip character 'T' and read hour |
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313 str.Set(aValue.Mid(9, 2)); |
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314 lex.Assign(str); |
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315 error = lex.Val(value); |
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316 CheckDatetimeErrorL( error ); |
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317 error = datetime.SetHour(value); |
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318 CheckDatetimeErrorL( error ); |
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319 |
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320 // minutes |
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321 str.Set(aValue.Mid(11, 2)); |
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322 lex.Assign(str); |
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323 error = lex.Val(value); |
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324 CheckDatetimeErrorL( error ); |
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325 error = datetime.SetMinute(value); |
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326 CheckDatetimeErrorL( error ); |
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327 |
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328 // seconds |
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329 str.Set(aValue.Mid(13, 2)); |
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330 lex.Assign(str); |
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331 error = lex.Val(value); |
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332 CheckDatetimeErrorL( error ); |
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333 error = datetime.SetSecond(value); |
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334 CheckDatetimeErrorL( error ); |
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335 |
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336 return TTime(datetime); |
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337 } |
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338 |
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339 |
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340 // ------------------------------------------------------------------------------------------------ |
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341 // Adds start element, the value and end element to aPtr. |
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342 // ------------------------------------------------------------------------------------------------ |
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343 void CNSmlXmlParser::AppendElement( TPtr8& aPtr, const TDesC8& aElementName, const TDesC8& aValue ) const |
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344 { |
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345 // start element |
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346 aPtr.Append(KElementStart); |
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347 aPtr.Append(aElementName); |
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348 aPtr.Append(KElementEnd); |
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349 |
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350 // value |
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351 aPtr.Append(aValue); |
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352 |
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353 // end element |
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354 aPtr.Append(KElementStart); |
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355 aPtr.Append(KCharacterSlash); |
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356 aPtr.Append(aElementName); |
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357 aPtr.Append(KElementEnd); |
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358 } |
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359 |
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360 |
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361 // ------------------------------------------------------------------------------------------------ |
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362 // Forms an element using the given element name and appends it to the given string. |
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363 // ------------------------------------------------------------------------------------------------ |
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364 void CNSmlXmlParser::AppendElement( TPtr8& aPtr, const TDesC8& aElementName ) const |
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365 { |
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366 aPtr.Append(KElementStart); |
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367 aPtr.Append(aElementName); |
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368 aPtr.Append(KElementEnd); |
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369 } |
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370 |
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371 |
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372 // ------------------------------------------------------------------------------------------------ |
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373 // Forms an end element using the given element name and appends it to the given string. |
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374 // ------------------------------------------------------------------------------------------------ |
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375 void CNSmlXmlParser::AppendEndElement( TPtr8& aPtr, const TDesC8& aElementName ) const |
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376 { |
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377 aPtr.Append(KElementStart); |
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378 aPtr.Append(KCharacterSlash); |
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379 aPtr.Append(aElementName); |
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380 aPtr.Append(KElementEnd); |
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381 } |
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382 |
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383 |
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384 // ------------------------------------------------------------------------------------------------ |
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385 // Returns the total length of start and end tag. |
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386 // ------------------------------------------------------------------------------------------------ |
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387 TInt CNSmlXmlParser::SizeOfElements( const TDesC8& aElementName ) const |
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388 { |
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389 TInt size = 0; |
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390 |
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391 // start element plus end element ( 1 = length of '/' char ) |
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392 size += 2*aElementName.Length() + 1; |
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393 size += 2*KElementStartEndWidth; // '<' and '>' |
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394 |
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395 return size; |
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396 } |
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397 |
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398 |
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399 // ------------------------------------------------------------------------------------------------ |
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400 // Returns the length of the given boolean element and it's data if it was a string. |
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401 // ------------------------------------------------------------------------------------------------ |
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402 TInt CNSmlXmlParser::SizeOfBoolean( const TNSmlBoolean aValue, const TDesC8& aElementName ) const |
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403 { |
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404 TInt size = 0; |
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405 size += SizeOfElements( aElementName ); |
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406 switch ( aValue ) |
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407 { |
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408 case EBooleanTrue: |
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409 return size+4; // "true" |
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410 case EBooleanFalse: |
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411 return size+5; // "false" |
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412 default: |
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413 return 0; |
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414 } |
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415 } |
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416 |
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417 |
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418 // ------------------------------------------------------------------------------------------------ |
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419 // Returns the length of the given datetime element and it's data if it was a string. |
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420 // ------------------------------------------------------------------------------------------------ |
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421 TInt CNSmlXmlParser::SizeOfDatetime( const TDesC8& aElementName ) const |
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422 { |
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423 TInt size = SizeOfElements( aElementName ) + KDateTimeLength; |
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424 return size; |
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425 } |
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426 |
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427 |
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428 // ------------------------------------------------------------------------------------------------ |
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429 // Returns the maximum length of the given integer element and it's data if it was a string. |
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430 // ------------------------------------------------------------------------------------------------ |
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431 TInt CNSmlXmlParser::SizeOfInteger( const TDesC8& aElementName ) const |
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432 { |
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433 TInt size = SizeOfElements( aElementName ) + KIntegerMaxLength; |
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434 return size; |
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435 } |
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436 |
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437 |
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438 // ------------------------------------------------------------------------------------------------ |
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439 // Returns the length of the given string element and it's data if it was a string. |
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440 // ------------------------------------------------------------------------------------------------ |
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441 TInt CNSmlXmlParser::SizeOfString( const HBufC8* aValue, const TDesC8& aElementName ) const |
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442 { |
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443 TInt size = SizeOfElements( aElementName ) + aValue->Length(); |
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444 return size; |
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445 } |
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446 |
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447 |
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448 // ------------------------------------------------------------------------------------------------ |
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449 // Finds entities and replaces them with the characters they represent. Returns |
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450 // an integer indicating the size change in aXml. |
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451 // ------------------------------------------------------------------------------------------------ |
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452 TInt CNSmlXmlParser::EntitiesToCharactersL( HBufC8*& aXml, TInt aStartPos, TInt aEndPos ) const |
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453 { |
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454 TInt change = 0; |
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455 TInt changeSum = 0; |
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456 |
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457 change = ReplaceL(aXml, KEntityLT, KLessThan, aStartPos, aEndPos); |
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458 changeSum += change; |
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459 aEndPos += change; |
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460 |
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461 change = ReplaceL(aXml, KEntityGT, KGreaterThan, aStartPos, aEndPos); |
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462 changeSum += change; |
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463 aEndPos += change; |
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464 |
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465 change = ReplaceL(aXml, KEntityAMP, KAmpersand, aStartPos, aEndPos); |
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466 changeSum += change; |
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467 aEndPos += change; |
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468 |
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469 change = ReplaceL(aXml, KEntityAPOS, KApostrophe, aStartPos, aEndPos); |
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470 changeSum += change; |
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471 aEndPos += change; |
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472 |
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473 change = ReplaceL(aXml, KEntityQUOT, KQuotation, aStartPos, aEndPos); |
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474 changeSum += change; |
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475 |
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476 return changeSum; |
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477 } |
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478 |
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479 |
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480 // ------------------------------------------------------------------------------------------------ |
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481 // Finds special characters and replaces them with corresponding entities. Returns |
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482 // an integer indicating the size change in aXml. |
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483 // ------------------------------------------------------------------------------------------------ |
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484 TInt CNSmlXmlParser::CharactersToEntitiesL( HBufC8*& aXml, TInt aStartPos, TInt aEndPos ) const |
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485 { |
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486 TInt change = 0; |
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487 TInt changeSum = 0; |
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488 |
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489 // Note: this replace has to be the first one, since it changes |
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490 // &-characters to &s and all the other replaces generate |
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491 // &-characters as they are entities. |
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492 change = ReplaceL(aXml, KAmpersand, KEntityAMP, aStartPos, aEndPos); |
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493 changeSum += change; |
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494 aEndPos += change; |
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495 |
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496 change = ReplaceL(aXml, KLessThan, KEntityLT, aStartPos, aEndPos); |
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497 changeSum += change; |
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498 aEndPos += change; |
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499 |
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500 change = ReplaceL(aXml, KGreaterThan, KEntityGT, aStartPos, aEndPos); |
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501 changeSum += change; |
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502 aEndPos += change; |
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503 |
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504 change = ReplaceL(aXml, KApostrophe, KEntityAPOS, aStartPos, aEndPos); |
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505 changeSum += change; |
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506 aEndPos += change; |
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507 |
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508 change = ReplaceL(aXml, KQuotation, KEntityQUOT, aStartPos, aEndPos); |
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509 changeSum += change; |
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510 |
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511 return changeSum; |
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512 } |
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513 |
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514 |
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515 // ------------------------------------------------------------------------------------------------ |
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516 // Returns ETrue if all the characters in the given text are whitespace |
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517 // characters, else EFalse. |
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518 // ------------------------------------------------------------------------------------------------ |
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519 TBool CNSmlXmlParser::IsWhitespace( const TDesC8& aText ) const |
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520 { |
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521 // loop the string character by character |
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522 TText c; |
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523 for ( TInt i=0; i < aText.Length(); ++i ) |
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524 { |
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525 c = aText[i]; |
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526 switch( c ) |
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527 { |
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528 case KWhitespaceEmpty: |
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529 break; |
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530 case KWhitespaceLineFeed: |
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531 break; |
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532 case KWhitespaceNewLine: |
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533 break; |
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534 case KWhitespaceTabular: |
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535 break; |
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536 case KWhitespaceLineFeedNewLine: |
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537 break; |
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538 default: |
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539 return EFalse; |
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540 } |
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541 } |
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542 |
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543 return ETrue; |
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544 } |
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545 |
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546 |
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547 // ------------------------------------------------------------------------------------------------ |
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548 // Leaves with EInvalidXmlError if the given string is not whitespace. |
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549 // ------------------------------------------------------------------------------------------------ |
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550 void CNSmlXmlParser::LeaveIfNotWhiteSpaceL( const TDesC8& aText ) const |
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551 { |
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552 if ( !IsWhitespace( aText ) ) |
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553 { |
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554 User::Leave( EInvalidXmlError ); |
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555 } |
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556 } |
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557 |
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558 |
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559 // ------------------------------------------------------------------------------------------------ |
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560 // Maps the given value to TNSmlParserGeneratorError. |
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561 // ------------------------------------------------------------------------------------------------ |
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562 TNSmlParserGeneratorError CNSmlXmlParser::CheckError( const TInt error ) const |
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563 { |
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564 if ( error == KErrNoMemory ) |
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565 { |
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566 return EOutOfMemory; |
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567 } |
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568 else if ( error < KErrNone ) |
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569 { |
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570 // some system wide error, should not occur |
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571 return EUnknownError; |
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572 } |
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573 else if ( error != EErrorNone ) |
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574 { |
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575 return (TNSmlParserGeneratorError)error; |
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576 } |
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577 |
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578 return EErrorNone; |
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579 } |
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580 |
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581 |
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582 // ------------------------------------------------------------------------------------------------ |
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583 // Parses the given xml and calls NextDataL and NextElementL methods when finds |
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584 // data or element. |
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585 // ------------------------------------------------------------------------------------------------ |
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586 void CNSmlXmlParser::ParseL( TPtrC8& aXml ) |
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587 { |
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588 |
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589 ResetBufferL(iBuffer); |
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590 ResetBufferL(iCompleteBuffer); |
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591 |
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592 // boolean indicating if reading element name (true) or insides of |
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593 // an element (false) |
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594 TBool readingElementName = EFalse; |
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595 TText c; |
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596 |
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597 for( TInt i=0; i < aXml.Length(); ++i ) |
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598 { |
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599 c = aXml[i]; |
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600 switch(c) |
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601 { |
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602 case KElementStart: |
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603 // if currently reading element, error |
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604 if( readingElementName ) |
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605 { |
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606 User::Leave(EInvalidXmlError); |
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607 } |
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608 |
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609 if( aXml.Length()-i >= KCDataStart().Length() && |
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610 !aXml.Mid(i, KCDataStart().Length()).Compare(KCDataStart()) ) |
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611 { // cdata |
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612 aXml.Set( aXml.Right( aXml.Length() - i ) ); |
|
613 TInt endPos = aXml.Find(KCDataEnd); |
|
614 |
|
615 TPtrC8 cdata = _L8(""); |
|
616 if ( endPos == KErrNotFound ) |
|
617 { |
|
618 User::Leave(EInvalidCDataStructure); |
|
619 } |
|
620 |
|
621 cdata.Set( aXml.Mid( KCDataStart().Length(), endPos - KCDataStart().Length() ) ); |
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622 aXml.Set( aXml.Right( aXml.Length() - endPos - KCDataEnd().Length() ) ); |
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623 |
|
624 i = -1; |
|
625 |
|
626 // add current buffer to complete buffer |
|
627 EntitiesToCharactersL( iBuffer, 0, iBuffer->Length() ); |
|
628 AddToCompleteL(*iBuffer); |
|
629 ResetBufferL(iBuffer); |
|
630 AddToCompleteL(cdata); |
|
631 } |
|
632 #ifndef __NO_XML_COMMENTS_ |
|
633 else if( aXml.Length()-i >= KCommentStart().Length() && |
|
634 !aXml.Mid(i, KCommentStart().Length()).Compare(KCommentStart()) ) |
|
635 { // comment |
|
636 aXml.Set( aXml.Right( aXml.Length() - i ) ); |
|
637 TInt endPos = aXml.Find(KCommentEnd); |
|
638 |
|
639 if ( endPos != KErrNotFound ) |
|
640 { |
|
641 aXml.Set( aXml.Right( aXml.Length() - endPos - KCommentEnd().Length() ) ); |
|
642 } |
|
643 else |
|
644 { |
|
645 User::Leave(EInvalidXmlError); |
|
646 } |
|
647 |
|
648 i = -1; |
|
649 } |
|
650 #endif |
|
651 else |
|
652 { |
|
653 // send the buffer |
|
654 EntitiesToCharactersL( iBuffer, 0, iBuffer->Length() ); |
|
655 AddToCompleteL(*iBuffer); |
|
656 NextDataL(*iCompleteBuffer); |
|
657 ResetBufferL(iBuffer); |
|
658 ResetBufferL(iCompleteBuffer); |
|
659 readingElementName = ETrue; |
|
660 } |
|
661 |
|
662 break; |
|
663 case KElementEnd: |
|
664 // stop reading element name |
|
665 if( !readingElementName ) |
|
666 { |
|
667 User::Leave(EInvalidXmlError); |
|
668 } |
|
669 else |
|
670 { |
|
671 NextElementL(*iBuffer); |
|
672 ResetBufferL(iBuffer); |
|
673 readingElementName = EFalse; |
|
674 } |
|
675 break; |
|
676 default: |
|
677 // add char to buffer |
|
678 AddToBufferL(c, iBuffer); |
|
679 break; |
|
680 } |
|
681 } |
|
682 |
|
683 EntitiesToCharactersL( iBuffer, 0, iBuffer->Length() ); |
|
684 AddToCompleteL(*iBuffer); |
|
685 NextDataL(*iCompleteBuffer); |
|
686 } |
|
687 |
|
688 |
|
689 // ------------------------------------------------------------------------------------------------ |
|
690 // Adds the given string to iCompleteBuffer |
|
691 // ------------------------------------------------------------------------------------------------ |
|
692 void CNSmlXmlParser::AddToCompleteL( const TPtrC8 aStr ) |
|
693 { |
|
694 if(!iCompleteBuffer) |
|
695 { |
|
696 iCompleteBuffer = HBufC8::NewL(aStr.Length()); |
|
697 } |
|
698 |
|
699 TPtr8 ptr = iCompleteBuffer->Des(); |
|
700 if( ptr.MaxLength() < iCompleteBuffer->Length()+aStr.Length() ) |
|
701 { |
|
702 iCompleteBuffer = iCompleteBuffer->ReAllocL(iCompleteBuffer->Length()+aStr.Length()); |
|
703 ptr.Set(iCompleteBuffer->Des()); |
|
704 } |
|
705 |
|
706 ptr.Append(aStr); |
|
707 } |
|
708 |
|
709 |
|
710 // ------------------------------------------------------------------------------------------------ |
|
711 // Deletes the given buffer and initializes it again to length 10 |
|
712 // ------------------------------------------------------------------------------------------------ |
|
713 void CNSmlXmlParser::ResetBufferL( HBufC8*& aBuf ) const |
|
714 { |
|
715 if( aBuf ) |
|
716 { |
|
717 delete aBuf; |
|
718 aBuf = NULL; |
|
719 } |
|
720 |
|
721 aBuf = HBufC8::NewL(10); |
|
722 } |
|
723 |
|
724 |
|
725 // ------------------------------------------------------------------------------------------------ |
|
726 // Adds the given char to given buffer |
|
727 // ------------------------------------------------------------------------------------------------ |
|
728 void CNSmlXmlParser::AddToBufferL( const TText c, HBufC8*& aBuf ) const |
|
729 { |
|
730 TPtr8 ptr = aBuf->Des(); |
|
731 if( ptr.MaxLength() == aBuf->Length()+1 ) |
|
732 { |
|
733 aBuf = aBuf->ReAllocL(aBuf->Length()+10); |
|
734 ptr.Set(aBuf->Des()); |
|
735 } |
|
736 |
|
737 TChar str = c; |
|
738 ptr.Append(str); |
|
739 } |
|
740 |
|
741 |
|
742 |
|
743 // ------------------------------------------------------------------------------------------------ |
|
744 // Replaces all occurances of aTarget in aText with aItem. Returns an integer indicating |
|
745 // the size change in aText. aStartPos and aEndPos indicate the start and end positions |
|
746 // of aText to be parsed (if whole string should be parsed, use 0 and aText.Length()). |
|
747 // ------------------------------------------------------------------------------------------------ |
|
748 TInt CNSmlXmlParser::ReplaceL( HBufC8*& aText, const TDesC8& aTarget, const TDesC8& aItem, TInt aStartPos, TInt aEndPos ) const |
|
749 { |
|
750 TInt change = 0; |
|
751 TInt searchPos = aStartPos; |
|
752 TPtrC8 text = aText->Mid(aStartPos, aEndPos-aStartPos); |
|
753 TInt pos = text.Find(aTarget); |
|
754 |
|
755 while ( pos != KErrNotFound ) |
|
756 { |
|
757 pos += searchPos; |
|
758 |
|
759 TInt currentChange = aItem.Length() - aTarget.Length(); |
|
760 change += currentChange; |
|
761 aEndPos += currentChange; |
|
762 searchPos = pos; |
|
763 |
|
764 if ( currentChange > 0 ) |
|
765 { |
|
766 searchPos += currentChange; |
|
767 |
|
768 // check that aText is large enough |
|
769 if ( aText->Des().MaxLength() < aText->Length()+currentChange ) |
|
770 { |
|
771 aText = aText->ReAllocL(aText->Length()+currentChange); |
|
772 } |
|
773 } |
|
774 |
|
775 // the actual replace |
|
776 aText->Des().Replace(pos, aTarget.Length(), aItem); |
|
777 |
|
778 text.Set( aText->Mid(searchPos, aEndPos-searchPos) ); |
|
779 pos = text.Find(aTarget); |
|
780 } |
|
781 |
|
782 return change; |
|
783 } |
|
784 |
|
785 |
|
786 // ------------------------------------------------------------------------------------------------ |
|
787 // |
|
788 // ------------------------------------------------------------------------------------------------ |
|
789 void CNSmlXmlParser::CheckDatetimeErrorL( const TInt error ) const |
|
790 { |
|
791 if ( error != KErrNone ) |
|
792 { |
|
793 User::Leave( EInvalidDatetimeValue ); |
|
794 } |
|
795 } |
|
796 |
|
797 //End of File |
|
798 |