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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: |
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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 |
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21 |
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22 |
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23 |
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24 |
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25 // INCLUDE FILES |
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26 #include "sensaxutils.h" |
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27 #include <SenXmlConstants.h> |
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28 |
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29 |
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30 EXPORT_C TInt SenSaxUtils::SearchStartTagL(const TDesC8& aDocument, |
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31 const TDesC8& aLocalName, |
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32 TInt& aStartTagStart, |
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33 TInt& aStartTagEnd, |
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34 TPtrC8& aPrefix) |
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35 { |
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36 return SearchStartTagL(aDocument, aLocalName, aStartTagStart, aStartTagEnd, |
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37 aPrefix, EFalse); |
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38 } |
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39 |
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40 |
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41 EXPORT_C TInt SenSaxUtils::SearchStartTagL(const TDesC8& aDocument, |
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42 const TDesC8& aPrefix, |
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43 const TDesC8& aLocalName, |
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44 TInt& aStartTagStart, |
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45 TInt& aStartTagEnd) |
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46 { |
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47 TPtrC8 tmpPrefix(aPrefix); |
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48 return SearchStartTagL(aDocument, aLocalName, aStartTagStart, aStartTagEnd, |
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49 tmpPrefix, ETrue); |
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50 } |
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51 |
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52 EXPORT_C TInt SenSaxUtils::SearchEndTagL(const TDesC8& aDocument, |
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53 const TDesC8& aLocalName, |
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54 TInt& aEndTagStart, |
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55 TInt& aEndTagEnd, |
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56 TPtrC8& aPrefix) |
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57 { |
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58 return SearchEndTagL(aDocument, aLocalName, aEndTagStart, aEndTagEnd, |
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59 aPrefix, EFalse); |
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60 } |
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61 |
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62 EXPORT_C TInt SenSaxUtils::SearchEndTagL(const TDesC8& aDocument, |
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63 const TDesC8& aPrefix, |
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64 const TDesC8& aLocalName, |
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65 TInt& aEndTagStart, |
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66 TInt& aEndTagEnd) |
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67 { |
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68 TPtrC8 tmpPrefix(aPrefix); |
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69 return SearchEndTagL(aDocument, aLocalName, aEndTagStart, aEndTagEnd, |
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70 tmpPrefix, ETrue); |
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71 } |
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72 |
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73 TInt SenSaxUtils::SearchStartTagL(const TDesC8& aDocument, |
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74 const TDesC8& aLocalName, |
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75 TInt& aStartTagStart, |
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76 TInt& aStartTagEnd, |
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77 TPtrC8& aPrefix, |
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78 TBool aSearchPrefix = EFalse) |
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79 |
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80 { |
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81 TPtrC8 localNamePtr(KNullDesC8); |
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82 TPtrC8 stPrefixPtr(KNullDesC8); |
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83 |
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84 TInt i; |
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85 TBool tagFound(EFalse); |
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86 TInt colon(KErrNotFound); |
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87 TInt lessThan(KErrNotFound); |
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88 TInt space(KErrNotFound); |
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89 |
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90 TInt size = aDocument.Size()-(aLocalName.Size()+3); // </a> <=> at least size-4 |
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91 TPtrC8 currentCharacter(KNullDesC8); |
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92 for (i = 0; i < size; i++) |
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93 { |
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94 currentCharacter.Set(aDocument.Ptr()+i,1); |
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95 |
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96 // ************* Handle Quotes <=> ' or " ******** // |
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97 if ( currentCharacter == KSenDblQuot ) // Check "\"" |
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98 { |
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99 i = SearchMarkStartingFromPlus(aDocument, KSenDblQuot, i+1, size); |
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100 if ( i == KErrNotFound ) |
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101 { |
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102 return i; |
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103 } |
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104 } |
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105 else if ( currentCharacter == KSenQuot ) // Check "'" |
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106 { |
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107 i = SearchMarkStartingFromPlus(aDocument, KSenQuot, i+1, size); |
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108 if ( i == KErrNotFound ) |
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109 { |
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110 return i; |
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111 } |
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112 } |
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113 else |
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114 { |
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115 // ************* Handle "<" ****************** // |
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116 if ( currentCharacter == KSenLessThan ) // Check "<" |
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117 { |
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118 currentCharacter.Set(aDocument.Ptr()+i,4); |
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119 // ************* Handle comments ********* // |
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120 if ( currentCharacter == KSenXmlCommentStart ) // Check "<!--" |
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121 { |
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122 i+=3; |
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123 i = SearchEndOfCommentStartingFrom(aDocument, i, size); |
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124 if ( i == KErrNotFound ) |
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125 { |
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126 return i; |
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127 } |
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128 } |
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129 else |
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130 { |
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131 currentCharacter.Set(aDocument.Ptr()+i,2); |
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132 if ( currentCharacter == KSenXmlInstructionStart || // Check "<?" |
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133 currentCharacter == KSenXmlEntityStart || // Check "<!" |
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134 currentCharacter == KSenLessThanSlash ) // Check "<\" |
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135 { |
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136 i+=1; |
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137 i = SearchMatchingGreaterThanStartingFrom(aDocument, |
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138 i, |
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139 size); |
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140 if ( i == KErrNotFound ) |
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141 { |
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142 return i; |
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143 } |
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144 } |
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145 else |
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146 { |
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147 colon = KErrNotFound; |
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148 space = KErrNotFound; |
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149 lessThan = i; |
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150 } |
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151 } |
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152 } |
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153 // ************* Handle ">" ****************** // |
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154 else if ( currentCharacter == KSenGreaterThan ) // Check ">" |
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155 { |
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156 if ( lessThan != KErrNotFound ) |
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157 { |
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158 if ( colon != KErrNotFound ) |
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159 { |
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160 // Both Prefix and LocalName can be found. |
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161 if ( space != KErrNotFound ) |
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162 { |
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163 localNamePtr.Set(aDocument.Ptr()+colon+1, space-colon-1); |
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164 } |
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165 else |
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166 { |
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167 localNamePtr.Set(aDocument.Ptr()+colon+1, i-colon-1); |
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168 } |
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169 if ( !aSearchPrefix ) |
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170 { |
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171 aPrefix.Set(aDocument.Ptr()+lessThan+1, colon-lessThan-1); |
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172 } |
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173 else |
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174 { |
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175 stPrefixPtr.Set(aDocument.Ptr()+lessThan+1, colon-lessThan-1); |
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176 } |
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177 } |
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178 else |
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179 { |
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180 // Only LocalName can be found. |
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181 if ( space != KErrNotFound ) |
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182 { |
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183 localNamePtr.Set(aDocument.Ptr()+lessThan+1, space-lessThan-1); |
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184 } |
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185 else |
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186 { |
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187 localNamePtr.Set(aDocument.Ptr()+lessThan+1, i-lessThan-1); |
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188 } |
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189 stPrefixPtr.Set(KNullDesC8); |
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190 } |
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191 |
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192 if ( localNamePtr == aLocalName ) |
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193 { |
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194 if ( aSearchPrefix ) |
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195 { |
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196 if ( stPrefixPtr == aPrefix ) |
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197 { |
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198 tagFound = ETrue; |
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199 break; |
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200 } |
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201 else |
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202 { |
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203 tagFound = EFalse; |
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204 lessThan = KErrNotFound; |
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205 colon = KErrNotFound; |
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206 space = KErrNotFound; |
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207 } |
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208 } |
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209 else |
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210 { |
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211 tagFound = ETrue; |
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212 break; |
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213 } |
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214 } |
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215 else |
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216 { |
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217 tagFound = EFalse; |
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218 lessThan = KErrNotFound; |
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219 colon = KErrNotFound; |
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220 space = KErrNotFound; |
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221 } |
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222 } |
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223 } |
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224 // ************* Handle ":" ****************** // |
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225 else if ( currentCharacter == KSenColon ) // Check ":" |
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226 { |
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227 if ( lessThan != KErrNotFound && |
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228 space == KErrNotFound && |
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229 colon == KErrNotFound ) |
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230 { |
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231 colon = i; |
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232 } |
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233 } |
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234 // ************* Handle " " ****************** // |
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235 else if ( currentCharacter == KSenSpace ) // Check " " |
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236 { |
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237 if ( lessThan != KErrNotFound && |
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238 space == KErrNotFound ) |
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239 { |
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240 space = i; |
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241 } |
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242 } |
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243 } |
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244 } |
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245 |
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246 if ( tagFound ) |
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247 { |
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248 aStartTagStart = lessThan; |
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249 aStartTagEnd = i; |
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250 } |
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251 else |
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252 { |
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253 aStartTagStart = KErrNotFound; |
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254 aStartTagEnd = KErrNotFound; |
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255 return KErrNotFound; |
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256 } |
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257 |
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258 return KErrNone; |
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259 } |
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260 |
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261 TInt SenSaxUtils::SearchEndTagL(const TDesC8& aDocument, |
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262 const TDesC8& aLocalName, |
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263 TInt& aEndTagStart, |
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264 TInt& aEndTagEnd, |
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265 TPtrC8& aPrefix, |
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266 TBool aSearchPrefix) |
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267 { |
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268 // Search EndTag starting from the end |
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269 // of XML Document |
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270 TPtrC8 localNamePtr(KNullDesC8); |
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271 TPtrC8 etPrefixPtr(KNullDesC8); |
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272 |
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273 TInt colon(KErrNotFound); |
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274 TInt greaterThan(KErrNotFound); |
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275 TBool tagFound = EFalse; |
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276 |
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277 TInt i=aDocument.Size()-1; |
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278 TPtrC8 currentCharacter(KNullDesC8); |
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279 for (; i > 2; i--) |
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280 { |
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281 currentCharacter.Set(aDocument.Ptr()+i,1); |
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282 |
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283 // ************* Handle Quotes <=> ' or " ******** // |
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284 if ( currentCharacter == KSenDblQuot ) // Check "\"" |
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285 { |
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286 i = SearchMarkStartingFromMinus(aDocument, KSenDblQuot, i-1); |
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287 if ( i == KErrNotFound ) |
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288 { |
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289 return i; |
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290 } |
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291 } |
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292 else if ( currentCharacter == KSenQuot ) // Check "'" |
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293 { |
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294 i = SearchMarkStartingFromMinus(aDocument, KSenQuot, i-1); |
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295 if ( i == KErrNotFound ) |
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296 { |
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297 return i; |
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298 } |
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299 } |
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300 else |
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301 { |
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302 // ************* Handle ">" ****************** // |
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303 if ( currentCharacter == KSenGreaterThan ) // Check ">" |
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304 { |
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305 currentCharacter.Set(aDocument.Ptr()+i-2,3); |
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306 // ************* Handle comments ********* // |
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307 if ( currentCharacter == KSenXmlCommentEnd ) // Check "-->" |
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308 { |
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309 i-=3; |
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310 i = SearchStartOfCommentStartingFrom(aDocument, i); |
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311 if ( i == KErrNotFound ) |
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312 { |
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313 return i; |
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314 } |
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315 } |
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316 else |
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317 { |
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318 greaterThan = i; |
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319 colon = KErrNotFound; |
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320 } |
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321 } |
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322 // ************* Handle "<" ****************** // |
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323 else if ( currentCharacter == KSenLessThan ) // Check "<" |
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324 { |
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325 currentCharacter.Set(aDocument.Ptr()+i,2); |
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326 if ( currentCharacter == KSenXmlInstructionStart || // Check "<?" |
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327 currentCharacter == KSenXmlEntityStart) // Check "<!" |
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328 { |
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329 greaterThan = KErrNotFound; |
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330 colon = KErrNotFound; |
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331 } |
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332 else if ( currentCharacter == KSenLessThanSlash ) // Check "</" |
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333 { |
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334 if ( greaterThan != KErrNotFound ) |
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335 { |
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336 if ( colon != KErrNotFound ) |
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337 { |
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338 // Both Prefix and LocalName was found. |
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339 localNamePtr.Set(aDocument.Ptr()+colon+1, greaterThan-colon-1); |
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340 if ( !aSearchPrefix ) |
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341 { |
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342 aPrefix.Set(aDocument.Ptr()+i+2, colon-i-2); |
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343 } |
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344 else |
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345 { |
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346 etPrefixPtr.Set(aDocument.Ptr()+i+2, colon-i-2); |
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347 } |
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348 } |
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349 else |
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350 { |
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351 // Only LocalName was found. |
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352 localNamePtr.Set(aDocument.Ptr()+i+2, greaterThan-i-2); |
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353 etPrefixPtr.Set(KNullDesC8); |
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354 } |
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355 |
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356 if ( localNamePtr == aLocalName ) |
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357 { |
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358 if ( aSearchPrefix ) |
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359 { |
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360 if ( etPrefixPtr == aPrefix ) |
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361 { |
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362 tagFound = ETrue; |
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363 break; |
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364 } |
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365 else |
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366 { |
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367 tagFound = EFalse; |
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368 greaterThan = KErrNotFound; |
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369 colon = KErrNotFound; |
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370 } |
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371 } |
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372 else |
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373 { |
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374 tagFound = ETrue; |
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375 break; |
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376 } |
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377 } |
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378 else |
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379 { |
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380 tagFound = EFalse; |
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381 greaterThan = KErrNotFound; |
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382 colon = KErrNotFound; |
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383 } |
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384 } |
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385 } |
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386 } |
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387 else if ( currentCharacter == KSenColon ) // Check ":" |
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388 { |
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389 if ( greaterThan != KErrNotFound ) |
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390 { |
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391 colon = i; |
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392 } |
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393 } |
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394 } |
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395 } |
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396 |
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397 if ( tagFound ) |
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398 { |
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399 aEndTagStart = i; |
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400 aEndTagEnd = greaterThan; |
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401 } |
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402 else |
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403 { |
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404 aEndTagStart = KErrNotFound; |
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405 aEndTagEnd = KErrNotFound; |
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406 return KErrNotFound; |
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407 } |
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408 |
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409 return KErrNone; |
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410 } |
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411 |
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412 TInt SenSaxUtils::SearchMarkStartingFromPlus(const TDesC8& aDocument, |
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413 const TDesC8& aMark, |
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414 TInt position, |
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415 TInt size) |
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416 { |
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417 TPtrC8 currentCharacter; |
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418 TInt i = position; |
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419 for (; i < size; i++ ) |
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420 { |
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421 currentCharacter.Set(aDocument.Ptr()+i,1); |
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422 if ( currentCharacter == aMark ) |
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423 { |
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424 return i; |
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425 } |
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426 } |
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427 |
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428 return KErrNotFound; |
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429 } |
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430 |
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431 TInt SenSaxUtils::SearchMarkStartingFromMinus(const TDesC8& aDocument, |
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432 const TDesC8& aMark, |
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433 TInt position) |
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434 { |
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435 TPtrC8 currentCharacter; |
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436 TInt i = position; |
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437 for (; i >= 0; i--) |
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438 { |
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439 currentCharacter.Set(aDocument.Ptr()+i,1); |
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440 if ( currentCharacter == aMark ) |
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441 { |
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442 return i; |
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443 } |
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444 } |
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445 |
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446 return KErrNotFound; |
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447 } |
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448 |
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449 TInt SenSaxUtils::SearchMatchingGreaterThanStartingFrom(const TDesC8& aDocument, |
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450 TInt position, |
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451 TInt size) |
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452 { |
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453 TInt lessThanCount = 1; |
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454 TPtrC8 currentCharacter; |
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455 |
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456 for (TInt i = position; i < size; i++) |
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457 { |
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458 currentCharacter.Set(aDocument.Ptr()+i,1); |
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459 |
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460 if ( currentCharacter == KSenDblQuot ) // Check "\"" |
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461 { |
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462 i = SearchMarkStartingFromPlus(aDocument, KSenDblQuot, i+1, size); |
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463 if ( i == KErrNotFound ) |
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464 { |
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465 return i; |
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466 } |
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467 } |
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468 else if ( currentCharacter == KSenQuot ) // Check "'" |
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469 { |
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470 i = SearchMarkStartingFromPlus(aDocument, KSenQuot, i+1, size); |
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471 if ( i == KErrNotFound ) |
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472 { |
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473 return i; |
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474 } |
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475 } |
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476 else |
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477 { |
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478 if ( currentCharacter == KSenLessThan ) // Check "<" |
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479 { |
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480 currentCharacter.Set(aDocument.Ptr()+i,4); |
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481 if ( currentCharacter == KSenXmlCommentStart ) // Check "<!--" |
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482 { |
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483 i+=3; |
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484 i = SearchEndOfCommentStartingFrom(aDocument, i, size); |
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485 } |
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486 else |
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487 { |
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488 lessThanCount++; |
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489 } |
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490 } |
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491 else if ( currentCharacter == KSenGreaterThan ) // Check ">" |
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492 { |
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493 lessThanCount--; |
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494 if ( lessThanCount == 0) |
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495 { |
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496 return i; |
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497 } |
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498 } |
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499 } |
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500 } |
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501 |
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502 return KErrNotFound; |
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503 } |
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504 |
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505 TInt SenSaxUtils::SearchEndOfCommentStartingFrom(const TDesC8& aDocument, |
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506 TInt position, |
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507 TInt size) |
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508 { |
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509 TPtrC8 currentCharacter; |
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510 |
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511 for (TInt i = position; i < size; i++) |
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512 { |
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513 currentCharacter.Set(aDocument.Ptr()+i,1); |
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514 |
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515 if ( currentCharacter == KSenGreaterThan ) // Check ">" |
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516 { |
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517 currentCharacter.Set(aDocument.Ptr()+i-2,3); |
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518 if ( currentCharacter == KSenXmlCommentEnd ) // Check "-->" |
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519 { |
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520 return i; |
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521 } |
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522 } |
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523 } |
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524 |
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525 return KErrNotFound; |
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526 } |
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527 |
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528 TInt SenSaxUtils::SearchStartOfCommentStartingFrom(const TDesC8& aDocument, |
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529 TInt position) |
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530 { |
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531 TPtrC8 currentCharacter; |
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532 |
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533 for (TInt i = position; i >= 0; i--) |
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534 { |
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535 currentCharacter.Set(aDocument.Ptr()+i,1); |
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536 |
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537 if ( currentCharacter == KSenLessThan ) // Check "<" |
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538 { |
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539 currentCharacter.Set(aDocument.Ptr()+i,4); |
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540 if ( currentCharacter == KSenXmlCommentStart ) // Check "<!--" |
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541 { |
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542 return i; |
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543 } |
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544 } |
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545 } |
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546 |
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547 return KErrNotFound; |
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548 } |
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549 |
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550 // End of File |
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551 |