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1 /* |
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2 * Copyright (c) 2010 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 #include "KoreanLunarDateUtil.h" |
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20 // debug |
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21 #include "calendarui_debug.h" |
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22 |
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23 const TInt KMaxLunarYear = 60; |
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24 |
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25 /** |
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26 * Public methods for constructing a CKoreanLunarDateUtil object. |
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27 */ |
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28 CKoreanLunarDateUtil* CKoreanLunarDateUtil::NewL(MCalenServices* aServices) |
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29 { |
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30 TRACE_ENTRY_POINT; |
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31 CKoreanLunarDateUtil* self = CKoreanLunarDateUtil::NewLC(aServices); |
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32 CleanupStack::Pop( self ); |
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33 |
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34 TRACE_EXIT_POINT; |
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35 return self; |
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36 } |
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37 |
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38 CKoreanLunarDateUtil* CKoreanLunarDateUtil::NewLC(MCalenServices* aServices) |
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39 { |
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40 TRACE_ENTRY_POINT; |
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41 CKoreanLunarDateUtil* self = new (ELeave) CKoreanLunarDateUtil(aServices); |
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42 CleanupStack::PushL( self ); |
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43 self->ConstructL(); |
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44 return self; |
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45 } |
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46 |
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47 |
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48 CKoreanLunarDateUtil::CKoreanLunarDateUtil(MCalenServices* aServices):iServices(aServices) |
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49 { |
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50 TRACE_ENTRY_POINT; |
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51 } |
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52 |
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53 |
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54 void CKoreanLunarDateUtil::ConstructL() |
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55 { |
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56 TRACE_ENTRY_POINT; |
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57 iConverter = CKoreanCalConv::NewL(); |
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58 } |
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59 |
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60 CKoreanLunarDateUtil::~CKoreanLunarDateUtil() |
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61 { |
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62 TRACE_ENTRY_POINT; |
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63 delete iConverter; |
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64 } |
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65 |
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66 /** |
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67 * Method for getting nearest gregorian date from |
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68 * lunar day and month and gregorian reference. |
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69 */ |
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70 TDateTime CKoreanLunarDateUtil::GetNearestGregorianDateL( const TInt aMonth, |
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71 const TInt aDay, |
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72 const TBool aLeap, |
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73 const TDateTime& aReference ) const |
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74 { |
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75 TRACE_ENTRY_POINT; |
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76 TKoreanDate refLunarDate; |
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77 TKoreanDate lunarDate; |
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78 TDateTime resDateTime; |
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79 TInt err = KErrNone; |
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80 |
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81 iConverter->DateTimeToKoreanL( aReference, refLunarDate ); |
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82 /* Try to convert with the year and cycle we got with the reference */ |
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83 lunarDate.iCycle = refLunarDate.iCycle; |
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84 lunarDate.iYear = refLunarDate.iYear; |
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85 lunarDate.iMonth = aMonth; |
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86 lunarDate.iDay = aDay; |
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87 lunarDate.iLeapMonth = aLeap; |
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88 TRAP( err, iConverter->KoreanToDateTimeL( lunarDate, resDateTime ) ); |
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89 if( err == KErrArgument ) |
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90 { /* Date is invalid for this year (day 30 on a month |
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91 that has only 29 days on selected year or a leap month |
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92 not in this year), try to find suitable */ |
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93 TKoreanDate lowerLimit; |
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94 TKoreanDate upperLimit; |
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95 iConverter->DateRange( lowerLimit, upperLimit ); |
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96 while( 1 ) |
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97 { /* Search by increasing year */ |
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98 if( lunarDate.iYear < KMaxLunarYear ) |
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99 { |
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100 lunarDate.iYear++; |
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101 } |
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102 else |
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103 { |
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104 lunarDate.iYear = 1; |
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105 lunarDate.iCycle++; |
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106 } |
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107 if( (lunarDate.iCycle == upperLimit.iCycle && |
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108 lunarDate.iYear > upperLimit.iYear) || |
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109 lunarDate.iCycle > upperLimit.iCycle ) |
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110 { /* Could not find, just break */ |
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111 break; |
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112 } |
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113 TRAP( err, iConverter->KoreanToDateTimeL( lunarDate, resDateTime ) ); |
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114 if( err == KErrNone ) |
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115 { /* Found suitable */ |
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116 break; |
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117 } |
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118 } |
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119 if( err != KErrNone ) |
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120 { /* Suitable not found by increasing, |
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121 reset values and search by decreasing year */ |
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122 lunarDate.iCycle = refLunarDate.iCycle; |
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123 lunarDate.iYear = refLunarDate.iYear; |
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124 lunarDate.iMonth = aMonth; |
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125 lunarDate.iDay = aDay; |
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126 while( 1 ) |
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127 { /* Search by decreasing year */ |
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128 if( lunarDate.iYear > 1 ) |
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129 { |
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130 lunarDate.iYear--; |
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131 } |
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132 else |
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133 { |
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134 if( lunarDate.iCycle == 0 ) |
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135 { /* Run out of cycles, break with error */ |
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136 break; |
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137 } |
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138 lunarDate.iYear = KMaxLunarYear; |
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139 lunarDate.iCycle--; |
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140 } |
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141 if( (lunarDate.iCycle == lowerLimit.iCycle && |
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142 lunarDate.iYear < lowerLimit.iYear) || |
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143 lunarDate.iCycle < lowerLimit.iCycle ) |
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144 { /* Could not find, just break */ |
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145 break; |
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146 } |
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147 TRAP( err, iConverter->KoreanToDateTimeL( lunarDate, resDateTime ) ); |
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148 if( err == KErrNone ) |
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149 { /* Found suitable */ |
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150 break; |
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151 } |
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152 } |
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153 } |
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154 } |
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155 /* If still not found, leave with error */ |
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156 User::LeaveIfError( err ); |
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157 |
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158 TRACE_ENTRY_POINT; |
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159 /* Otherwise return the result */ |
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160 return resDateTime; |
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161 } |
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162 |
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163 /** |
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164 * Method for getting lunar yearly repeats in gregorian dates. |
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165 */ |
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166 void CKoreanLunarDateUtil::GetLunarYearlyRepeatsL( RArray<TCalTime>& aRDates, |
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167 const TDateTime& aEntryDate, |
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168 const TBool aFloating ) const |
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169 { |
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170 TInt err = KErrNone; |
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171 TCalTime repeatDate; |
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172 TDateTime resDateTime; |
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173 TDateTime lowerLimit; |
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174 TKoreanDate upperKoreanLimit; |
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175 TKoreanDate lunarStartDate; |
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176 |
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177 /* Get the upper limit for dates in Korean lunar format */ |
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178 iConverter->DateRange( lunarStartDate, upperKoreanLimit ); |
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179 |
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180 /* Get the entry date in Korean lunar format */ |
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181 iConverter->DateTimeToKoreanL( aEntryDate, lunarStartDate ); |
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182 |
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183 /* Get the lower limit for dates in Gregorian format */ |
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184 iConverter->DateRange( lowerLimit, resDateTime ); |
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185 |
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186 /* Get the first occurrence of the event after |
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187 the lower limit in Korean lunar format */ |
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188 iConverter->DateTimeToKoreanL( GetNearestGregorianDateL( lunarStartDate.iMonth, |
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189 lunarStartDate.iDay, |
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190 lunarStartDate.iLeapMonth, |
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191 lowerLimit ), |
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192 lunarStartDate ); |
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193 |
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194 while( 1 ) |
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195 { |
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196 TRAP( err, iConverter->KoreanToDateTimeL( lunarStartDate, resDateTime ) ); |
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197 if( err == KErrNone ) |
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198 { /* Date exists in current year */ |
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199 if( aFloating ) |
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200 { |
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201 repeatDate.SetTimeLocalFloatingL( resDateTime ); |
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202 } |
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203 else |
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204 { |
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205 repeatDate.SetTimeLocalL( resDateTime ); |
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206 } |
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207 aRDates.AppendL( repeatDate ); |
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208 } |
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209 /* Increase to next lunar year */ |
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210 if( lunarStartDate.iYear < KMaxLunarYear ) |
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211 { |
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212 lunarStartDate.iYear++; |
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213 } |
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214 else |
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215 { |
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216 lunarStartDate.iYear = 1; |
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217 lunarStartDate.iCycle++; |
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218 } |
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219 if( (lunarStartDate.iCycle == upperKoreanLimit.iCycle && |
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220 lunarStartDate.iYear > upperKoreanLimit.iYear) || |
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221 lunarStartDate.iCycle > upperKoreanLimit.iCycle ) |
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222 { /* Reached the limit, break */ |
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223 break; |
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224 } |
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225 } |
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226 } |
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227 |
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228 // End of file |