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1 /* |
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2 * Copyright (c) 2008-2008 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: Parser class extension for parsing landmarks to url and vice versa |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 #include "cmrurlparserextension.h" |
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21 |
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22 #include <EPos_CPosLandmark.h> |
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23 #include <lbsposition.h> |
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24 #include <utf.h> |
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25 #include <finditemengine.h> |
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26 #include <calentry.h> |
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27 |
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28 #include "emailtrace.h" |
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29 |
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30 namespace |
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31 { |
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32 // Old location base URL format |
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33 _LIT( KLocationUrl, "http://www.ovi.com/maps/" ); |
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34 |
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35 // Latitude parameter |
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36 _LIT( KUrlParamLatitude, "lat=" ); |
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37 |
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38 // Parameter separator |
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39 _LIT( KUrlParamSeparator, "&" ); |
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40 |
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41 // Longitude parameter |
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42 _LIT( KUrlParamLongitude, "lon=" ); |
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43 |
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44 // Location sieve URL |
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45 _LIT( KLocationSieveUrl, "http://www.ovi.com/maps/lat=*&lon=*" ); |
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46 |
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47 const TUint KDecimalSeparator = '.'; |
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48 const TUint KMinusSign = '-'; |
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49 |
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50 // ======== LOCAL FUNCTIONS ======== |
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51 // ---------------------------------------------------------------------------- |
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52 // CheckCoordinateParamL |
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53 // |
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54 // Checks if coordinate parameter (lon or lat) is in correct format |
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55 // Leaves if not |
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56 // Correct form is: |
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57 // -minus sign allowed only in first position |
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58 // -only one decimalseparator sign allowed |
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59 // -only digits allowed |
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60 // -aParam length not allowed to be zero |
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61 // ---------------------------------------------------------------------------- |
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62 // |
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63 void CheckCoordinateParamL( const TDesC& aParam ) |
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64 { |
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65 FUNC_LOG; |
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66 if( aParam.Length() == 0 ) |
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67 { |
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68 User::Leave( KErrArgument ); |
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69 } |
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70 |
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71 //check that aParam contains only digits and only one decimalseparator |
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72 //and minus sign is first, if it exists |
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73 TChar character; |
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74 TBool decimalSeparatorFound = EFalse; |
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75 TLex lex; |
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76 lex.Assign( aParam ); |
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77 |
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78 for( TInt i = 0; i < aParam.Length(); i++) |
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79 { |
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80 character = lex.Get(); |
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81 //checks if first character is minus sign and continues if it is |
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82 if( i == 0 && (TUint)character == KMinusSign) |
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83 { |
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84 continue; |
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85 } |
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86 |
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87 //check that only one decimal separator exists |
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88 if ( (TUint)character == KDecimalSeparator ) |
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89 { |
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90 if ( decimalSeparatorFound ) |
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91 { |
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92 User::Leave( KErrArgument ); |
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93 } |
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94 else |
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95 { |
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96 decimalSeparatorFound = ETrue; |
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97 } |
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98 } |
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99 //check that character is either digit or decimalseparator |
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100 if( !( character.IsDigit() ) && (TUint)character != KDecimalSeparator ) |
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101 { |
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102 User::Leave( KErrArgument ); |
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103 } |
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104 } |
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105 } |
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106 |
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107 // ---------------------------------------------------------------------------- |
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108 // GetCoordinateParamValuesL |
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109 // Returns longitude and latitude if found correctly |
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110 // ---------------------------------------------------------------------------- |
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111 // |
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112 void GetCoordinateParamValuesL( const TDesC& aUrl, |
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113 TPtrC& aLatitude, |
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114 TPtrC& aLongitude ) |
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115 { |
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116 FUNC_LOG; |
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117 |
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118 //Find out if lat and lon params and separator exists in aUrl |
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119 TInt latPos = aUrl.Find( KUrlParamLatitude ); |
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120 TInt lonPos = aUrl.Find( KUrlParamLongitude ); |
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121 TInt separatorPos = aUrl.Find( KUrlParamSeparator ); |
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122 |
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123 if( latPos == KErrNotFound || lonPos == KErrNotFound |
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124 || separatorPos == KErrNotFound ) |
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125 { |
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126 User::Leave( KErrNotFound ); |
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127 } |
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128 |
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129 //takes from aUrl parts with actual coordinate data |
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130 aLatitude.Set( aUrl.Mid( |
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131 latPos + KUrlParamLatitude().Length(), |
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132 separatorPos - latPos - KUrlParamLatitude().Length() ) ); |
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133 |
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134 aLongitude.Set( aUrl.Right( |
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135 aUrl.Length() - separatorPos - 1 - KUrlParamLongitude().Length() ) ); |
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136 } |
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137 } |
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138 |
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139 // ======== MEMBER FUNCTIONS ======== |
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140 |
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141 // --------------------------------------------------------------------------- |
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142 // CMRUrlParserExtension::CMRUrlParserExtension |
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143 // --------------------------------------------------------------------------- |
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144 // |
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145 CMRUrlParserExtension::CMRUrlParserExtension() |
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146 { |
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147 FUNC_LOG; |
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148 } |
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149 |
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150 // --------------------------------------------------------------------------- |
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151 // CMRUrlParserExtension::NewL |
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152 // --------------------------------------------------------------------------- |
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153 // |
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154 CMRUrlParserExtension* CMRUrlParserExtension::NewL() |
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155 { |
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156 FUNC_LOG; |
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157 |
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158 CMRUrlParserExtension* self = CMRUrlParserExtension::NewLC(); |
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159 CleanupStack::Pop( self ); |
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160 return self; |
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161 } |
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162 |
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163 |
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164 // --------------------------------------------------------------------------- |
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165 // CMRUrlParserExtension::NewLC |
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166 // --------------------------------------------------------------------------- |
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167 // |
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168 CMRUrlParserExtension* CMRUrlParserExtension::NewLC() |
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169 { |
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170 FUNC_LOG; |
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171 |
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172 CMRUrlParserExtension* self = new( ELeave ) CMRUrlParserExtension; |
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173 CleanupStack::PushL( self ); |
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174 return self; |
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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 // CMRUrlParserExtension::~CMRUrlParserExtension |
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180 // --------------------------------------------------------------------------- |
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181 // |
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182 CMRUrlParserExtension::~CMRUrlParserExtension() |
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183 { |
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184 FUNC_LOG; |
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185 } |
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186 |
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187 // --------------------------------------------------------------------------- |
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188 // CMRUrlParserExtension::FindLocationUrl |
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189 // Finds location URL from given text input |
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190 // --------------------------------------------------------------------------- |
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191 // |
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192 void CMRUrlParserExtension::FindLocationUrlL( |
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193 const TDesC& aText, |
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194 TPtrC& aUrl, |
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195 TInt& aPos) |
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196 |
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197 { |
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198 FUNC_LOG; |
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199 |
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200 //Seach if base string is found from aText |
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201 TInt urlLocation = aText.FindF( KLocationUrl ); |
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202 if ( urlLocation < KErrNone ) |
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203 { |
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204 User::Leave(KErrNotFound); |
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205 } |
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206 |
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207 //Take out unnecessary part before URL and search if endmark (whitespace) |
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208 //is found. If endmark is not found, |
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209 //then all the rest of descriptor is part of URL |
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210 TPtrC urlAndAfter = aText.Mid( urlLocation ); |
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211 TInt urlAndAfterLength = urlAndAfter.Length(); |
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212 TInt urlEndmarkLocation = KErrNotFound; |
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213 |
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214 for( TInt i = 0; i < urlAndAfterLength; i++) |
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215 { |
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216 if( TChar( urlAndAfter[i] ).IsSpace() ) |
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217 { |
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218 urlEndmarkLocation = i; |
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219 break; |
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220 } |
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221 } |
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222 |
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223 if( urlEndmarkLocation == KErrNotFound ) |
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224 { |
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225 urlEndmarkLocation = urlAndAfterLength; |
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226 } |
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227 |
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228 //Take out part from beginning of URL to endmark |
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229 TPtrC urlToEndMark = urlAndAfter.Left( urlEndmarkLocation ); |
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230 |
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231 //Now we should have only URL left, check with "sieve" that it is about in |
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232 //right format |
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233 TInt sievedStartPoint = urlToEndMark.MatchF( KLocationSieveUrl ); |
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234 |
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235 if( sievedStartPoint == KErrNotFound ) |
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236 { |
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237 User::Leave(KErrNotFound); |
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238 } |
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239 |
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240 //Check that parameters are in right format |
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241 TPtrC latValue; |
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242 TPtrC lonValue; |
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243 |
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244 GetCoordinateParamValuesL( |
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245 urlToEndMark, |
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246 latValue, |
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247 lonValue ); |
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248 CheckCoordinateParamL( latValue ); |
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249 CheckCoordinateParamL( lonValue ); |
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250 |
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251 //Set aURL to correspond URL part of aText and aPos with url position |
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252 aUrl.Set( urlToEndMark ); |
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253 aPos = urlLocation; |
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254 } |
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255 |
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256 // --------------------------------------------------------------------------- |
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257 // CMRUrlParserExtension::CreateLandmarkFromUrlL |
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258 // Creates landmark object from location URL |
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259 // --------------------------------------------------------------------------- |
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260 // |
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261 CPosLandmark* CMRUrlParserExtension::CreateLandmarkFromUrlL( |
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262 const TDesC& aUrl ) |
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263 { |
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264 FUNC_LOG; |
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265 |
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266 TInt matchPos = User::LeaveIfError( aUrl.MatchF( KLocationSieveUrl ) ); |
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267 |
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268 if( matchPos != 0 ) |
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269 { |
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270 //URL was found but is not int the beginning of desc |
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271 User::Leave( KErrArgument ); |
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272 } |
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273 |
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274 //Parse actual coordinate values out of url |
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275 TPtrC latValue; |
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276 TPtrC lonValue; |
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277 GetCoordinateParamValuesL( aUrl, latValue, lonValue ); |
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278 |
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279 //Check that parameters are in right format |
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280 CheckCoordinateParamL( latValue ); |
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281 CheckCoordinateParamL( lonValue ); |
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282 |
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283 //Convert parameters to TReal values |
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284 TLex lexConverter( latValue ); |
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285 TReal64 realLatitude; |
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286 lexConverter.Val( realLatitude ); |
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287 |
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288 lexConverter.Assign( lonValue ); |
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289 TReal64 realLongitude; |
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290 lexConverter.Val( realLongitude ); |
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291 |
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292 //Create landmark with coordinatevalues |
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293 CPosLandmark* landmark = CPosLandmark::NewLC(); |
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294 TLocality position; |
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295 position.SetCoordinate( realLatitude, realLongitude ); |
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296 landmark->SetPositionL( position ); |
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297 CleanupStack::Pop( landmark ); |
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298 |
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299 //transfer ownership |
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300 return landmark; |
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301 } |
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302 |
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303 //EOF |
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304 |