1 /* |
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2 * Copyright (c) 2003-2005 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 the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Implementation of Custom ECom Resolver for LIW. |
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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 #include "liwresolver.h" |
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24 |
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25 const TInt KMaxDataItemSize = 238; |
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26 _LIT8(KContentTag, "<CONTENT>"); |
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27 _LIT8(KOpaqueTag, "<OPAQUE>"); |
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28 |
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29 |
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30 CLiwResolver* CLiwResolver::NewL(MPublicRegistry& aRegistry) |
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31 { |
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32 return new (ELeave) CLiwResolver(aRegistry); |
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33 } |
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34 |
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35 |
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36 CLiwResolver::CLiwResolver(MPublicRegistry& aRegistry) : CResolver(aRegistry) |
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37 { |
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38 // Nothing to do. |
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39 } |
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40 |
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41 |
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42 CLiwResolver::~CLiwResolver() |
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43 { |
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44 if (iImplementationInfoArray) |
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45 { |
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46 iImplementationInfoArray->Reset(); |
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47 delete iImplementationInfoArray; |
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48 } |
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49 } |
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50 |
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51 |
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52 |
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53 TUid CLiwResolver::IdentifyImplementationL(TUid aInterfaceUid, |
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54 const TEComResolverParams& aAdditionalParameters) const |
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55 { |
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56 RImplInfoArray& implementationsInfo = iRegistry.ListImplementationsL(aInterfaceUid); |
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57 TUid found = KNullUid; |
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58 |
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59 if(implementationsInfo.Count()) |
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60 { |
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61 found = Resolve(implementationsInfo, aAdditionalParameters); |
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62 } |
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63 |
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64 return found; |
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65 } |
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66 |
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67 |
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68 |
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69 RImplInfoArray* CLiwResolver::ListAllL(TUid aInterfaceUid, |
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70 const TEComResolverParams& aAdditionalParameters) const |
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71 { |
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72 // Use the member var to create the array so that we get proper cleanup behaviour |
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73 delete iImplementationInfoArray; |
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74 iImplementationInfoArray = NULL; |
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75 iImplementationInfoArray = new (ELeave) RImplInfoArray; |
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76 RImplInfoArray* retList = iImplementationInfoArray; |
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77 |
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78 RImplInfoArray& fullList = iRegistry.ListImplementationsL(aInterfaceUid); |
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79 |
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80 const TBool useWildcards = aAdditionalParameters.IsWildcardMatch(); |
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81 TBuf8<KMaxDataItemSize> content; |
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82 TBuf8<KMaxDataItemSize> opaque; |
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83 |
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84 ParseInput(aAdditionalParameters.DataType(), content, opaque); |
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85 const TInt numImps = fullList.Count(); |
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86 |
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87 for (TInt index = 0; index < numImps; ++index) |
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88 { |
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89 if (Match(fullList[index]->DataType(), content, useWildcards) && |
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90 MatchServiceCmd(fullList[index]->OpaqueData(), opaque)) |
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91 { |
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92 User::LeaveIfError(retList->Append(fullList[index])); |
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93 } |
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94 } |
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95 |
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96 // Reset the member variable because we are passing ownership back |
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97 iImplementationInfoArray = NULL; |
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98 |
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99 return retList; |
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100 } |
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101 |
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102 |
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103 |
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104 void CLiwResolver::ParseInput(const TDesC8& aParam, TDes8& aContent, TDes8& aOpaque) const |
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105 { |
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106 TInt cind = aParam.Find(KContentTag); |
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107 TInt oind = aParam.Find(KOpaqueTag); |
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108 |
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109 if (cind != KErrNotFound) |
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110 { |
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111 if (oind != KErrNotFound) |
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112 { |
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113 aContent.Copy(aParam.Mid(cind + (&KContentTag)->Length(), |
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114 oind - (cind + (&KContentTag)->Length()))); |
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115 } |
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116 else |
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117 { |
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118 aContent.Copy(aParam.Mid(cind + (&KContentTag)->Length())); |
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119 } |
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120 } |
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121 |
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122 if (oind != KErrNotFound) |
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123 { |
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124 aOpaque.Copy(aParam.Mid(oind + (&KOpaqueTag)->Length())); |
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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 TUid CLiwResolver::Resolve(const RImplInfoArray& aImplementationsInfo, |
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131 const TEComResolverParams& aAdditionalParameters) const |
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132 { |
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133 // Loop through the implementations matching on type |
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134 const TInt count = aImplementationsInfo.Count(); |
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135 |
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136 for (TInt index = 0; index < count; ++index) |
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137 { |
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138 const CImplementationInformation& impData = *aImplementationsInfo[index]; |
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139 // As soon as we get a match on the datatype then return uid of the |
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140 // implementation found. |
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141 if (Match(impData.DataType(), // The Datatype of this implementation |
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142 aAdditionalParameters.DataType(), // The type we are trying to find |
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143 aAdditionalParameters.IsWildcardMatch())) // If wildcards should be used |
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144 { |
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145 return impData.ImplementationUid(); |
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146 } |
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147 } |
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148 |
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149 return KNullUid; |
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150 } |
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151 |
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152 |
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153 TBool CLiwResolver::Match(const TDesC8& aImplementationType, const TDesC8& aMatchType, |
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154 TBool aUseWildcards) const |
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155 { |
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156 TInt matchPos = KErrNotFound; |
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157 |
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158 _LIT8(dataSeparator, "||"); |
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159 const TInt separatorLength = dataSeparator().Length(); |
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160 |
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161 // Look for the section separator marker '||' |
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162 TInt separatorPos = aImplementationType.Find(dataSeparator); |
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163 |
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164 if (separatorPos == KErrNotFound) |
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165 { |
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166 // Match against the whole string |
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167 if (aUseWildcards) |
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168 { |
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169 matchPos = aImplementationType.Match(aMatchType); |
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170 } |
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171 else |
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172 { |
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173 |
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174 if (aImplementationType.Compare(aMatchType) == 0) |
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175 { |
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176 matchPos = KErrNone; |
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177 } |
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178 } |
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179 } |
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180 else |
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181 { |
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182 // Find the first section, up to the separator |
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183 TPtrC8 dataSection = aImplementationType.Left(separatorPos); |
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184 TPtrC8 remainingData = aImplementationType.Mid(separatorPos + separatorLength); |
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185 |
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186 // Match against each section in turn |
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187 while (separatorPos != KErrNotFound) |
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188 { |
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189 // Search this section |
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190 if (aUseWildcards) |
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191 { |
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192 matchPos = dataSection.Match(aMatchType); |
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193 } |
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194 else |
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195 { |
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196 matchPos = dataSection.Compare(aMatchType); |
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197 } |
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198 |
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199 // If we found it then no need to continue, so return |
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200 if (matchPos != KErrNotFound) |
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201 { |
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202 return ETrue; |
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203 } |
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204 |
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205 // Move on to the next section |
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206 separatorPos = remainingData.Find(dataSeparator); |
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207 |
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208 if (separatorPos != KErrNotFound) |
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209 { |
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210 dataSection.Set(remainingData.Left(separatorPos)); |
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211 remainingData.Set(remainingData.Mid(separatorPos + separatorLength)); |
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212 } |
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213 else |
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214 { |
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215 dataSection.Set(remainingData); |
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216 } |
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217 } |
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218 |
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219 // Check the final part |
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220 if (aUseWildcards) |
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221 { |
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222 matchPos = dataSection.Match(aMatchType); |
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223 } |
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224 else |
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225 { |
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226 matchPos = dataSection.Compare(aMatchType); |
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227 } |
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228 |
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229 } |
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230 |
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231 return matchPos != KErrNotFound; |
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232 } |
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233 |
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234 |
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235 |
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236 |
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237 TBool CLiwResolver::MatchServiceCmd(const TDesC8& aOpaqueData, const TDesC8& aServiceCmd) const |
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238 { |
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239 _LIT8(KWild,"*"); |
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240 |
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241 //check for wildcard character * |
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242 //if yes, return immediatly |
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243 if(0==aServiceCmd.Compare(KWild)) |
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244 return ETrue; |
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245 |
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246 // Extract List Of service command from OpaQue Data |
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247 _LIT8(MetadataSeparator, "::"); |
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248 TPtrC8 dataSection; |
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249 TInt MetadataSeparatorPos = aOpaqueData.Find(MetadataSeparator); |
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250 if (MetadataSeparatorPos != KErrNotFound) |
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251 { |
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252 dataSection.Set(aOpaqueData.Left(MetadataSeparatorPos)); |
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253 } |
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254 else |
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255 { |
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256 dataSection.Set(aOpaqueData); |
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257 } |
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258 |
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259 _LIT8(dataSeparator, "||"); |
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260 const TInt separatorLength = dataSeparator().Length(); |
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261 |
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262 // Look for the section separator marker '||' |
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263 TInt separatorPos = dataSection.Find(dataSeparator); |
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264 |
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265 if (separatorPos == KErrNotFound) |
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266 { |
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267 if (aServiceCmd.Compare(dataSection) == 0) |
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268 { |
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269 return ETrue; |
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270 } |
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271 } |
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272 else |
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273 { |
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274 // Find the first section, up to the separator |
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275 TPtrC8 remainingData = dataSection.Mid(separatorPos + separatorLength); |
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276 dataSection.Set(dataSection.Left(separatorPos)); |
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277 |
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278 // Match against each section in turn |
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279 while (separatorPos != KErrNotFound) |
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280 { |
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281 if (dataSection.Compare(aServiceCmd) == 0) |
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282 { |
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283 return ETrue; |
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284 } |
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285 |
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286 // Move on to the next section |
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287 separatorPos = remainingData.Find(dataSeparator); |
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288 |
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289 if (separatorPos != KErrNotFound) |
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290 { |
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291 dataSection.Set(remainingData.Left(separatorPos)); |
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292 remainingData.Set(remainingData.Mid(separatorPos + separatorLength)); |
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293 } |
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294 else |
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295 { |
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296 dataSection.Set(remainingData); |
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297 } |
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298 } |
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299 |
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300 if (dataSection.Compare(aServiceCmd) == 0) |
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301 { |
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302 return ETrue; |
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303 } |
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304 } |
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305 |
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306 return EFalse; |
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307 } |
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308 |
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309 // Map the interface UIDs |
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310 const TImplementationProxy ImplementationTable[] = |
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311 { |
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312 IMPLEMENTATION_PROXY_ENTRY(KLiwResolverImplUidValue, CLiwResolver::NewL) |
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313 }; |
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314 |
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315 // Exported proxy for instantiation method resolution |
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316 // --------------------------------------------------------- |
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317 // |
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318 // |
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319 // --------------------------------------------------------- |
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320 // |
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321 EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount) |
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322 { |
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323 aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy); |
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324 return ImplementationTable; |
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325 } |
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326 |
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327 // End of file |
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328 |
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