fd9b489d8ab7cfa1e073f7e4020092ae6f81d8ae.svn-base 8.9 KB

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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Web;
  5. namespace iBemsDataService.Util
  6. {
  7. // reference : https://github.com/isee15/Lunar-Solar-Calendar-Converter/blob/master/C%23/LunarSolarConverter.cs
  8. public class LunarSolarConverter
  9. {
  10. /*
  11. * |----4位闰月|-------------13位1为30天,0为29天|
  12. * */
  13. public static int[] lunar_month_days =
  14. {
  15. 1887, 0x1694, 0x16aa, 0x4ad5, 0xab6, 0xc4b7, 0x4ae, 0xa56, 0xb52a,
  16. 0x1d2a, 0xd54, 0x75aa, 0x156a, 0x1096d, 0x95c, 0x14ae, 0xaa4d, 0x1a4c, 0x1b2a, 0x8d55, 0xad4, 0x135a, 0x495d,
  17. 0x95c, 0xd49b, 0x149a, 0x1a4a, 0xbaa5, 0x16a8, 0x1ad4, 0x52da, 0x12b6, 0xe937, 0x92e, 0x1496, 0xb64b, 0xd4a,
  18. 0xda8, 0x95b5, 0x56c, 0x12ae, 0x492f, 0x92e, 0xcc96, 0x1a94, 0x1d4a, 0xada9, 0xb5a, 0x56c, 0x726e, 0x125c,
  19. 0xf92d, 0x192a, 0x1a94, 0xdb4a, 0x16aa, 0xad4, 0x955b, 0x4ba, 0x125a, 0x592b, 0x152a, 0xf695, 0xd94, 0x16aa,
  20. 0xaab5, 0x9b4, 0x14b6, 0x6a57, 0xa56, 0x1152a, 0x1d2a, 0xd54, 0xd5aa, 0x156a, 0x96c, 0x94ae, 0x14ae, 0xa4c,
  21. 0x7d26, 0x1b2a, 0xeb55, 0xad4, 0x12da, 0xa95d, 0x95a, 0x149a, 0x9a4d, 0x1a4a, 0x11aa5, 0x16a8, 0x16d4,
  22. 0xd2da, 0x12b6, 0x936, 0x9497, 0x1496, 0x1564b, 0xd4a, 0xda8, 0xd5b4, 0x156c, 0x12ae, 0xa92f, 0x92e, 0xc96,
  23. 0x6d4a, 0x1d4a, 0x10d65, 0xb58, 0x156c, 0xb26d, 0x125c, 0x192c, 0x9a95, 0x1a94, 0x1b4a, 0x4b55, 0xad4,
  24. 0xf55b, 0x4ba, 0x125a, 0xb92b, 0x152a, 0x1694, 0x96aa, 0x15aa, 0x12ab5, 0x974, 0x14b6, 0xca57, 0xa56, 0x1526,
  25. 0x8e95, 0xd54, 0x15aa, 0x49b5, 0x96c, 0xd4ae, 0x149c, 0x1a4c, 0xbd26, 0x1aa6, 0xb54, 0x6d6a, 0x12da, 0x1695d,
  26. 0x95a, 0x149a, 0xda4b, 0x1a4a, 0x1aa4, 0xbb54, 0x16b4, 0xada, 0x495b, 0x936, 0xf497, 0x1496, 0x154a, 0xb6a5,
  27. 0xda4, 0x15b4, 0x6ab6, 0x126e, 0x1092f, 0x92e, 0xc96, 0xcd4a, 0x1d4a, 0xd64, 0x956c, 0x155c, 0x125c, 0x792e,
  28. 0x192c, 0xfa95, 0x1a94, 0x1b4a, 0xab55, 0xad4, 0x14da, 0x8a5d, 0xa5a, 0x1152b, 0x152a, 0x1694, 0xd6aa,
  29. 0x15aa, 0xab4, 0x94ba, 0x14b6, 0xa56, 0x7527, 0xd26, 0xee53, 0xd54, 0x15aa, 0xa9b5, 0x96c, 0x14ae, 0x8a4e,
  30. 0x1a4c, 0x11d26, 0x1aa4, 0x1b54, 0xcd6a, 0xada, 0x95c, 0x949d, 0x149a, 0x1a2a, 0x5b25, 0x1aa4, 0xfb52,
  31. 0x16b4, 0xaba, 0xa95b, 0x936, 0x1496, 0x9a4b, 0x154a, 0x136a5, 0xda4, 0x15ac
  32. };
  33. public static int[] solar_1_1 =
  34. {
  35. 1887, 0xec04c, 0xec23f, 0xec435, 0xec649, 0xec83e, 0xeca51, 0xecc46, 0xece3a,
  36. 0xed04d, 0xed242, 0xed436, 0xed64a, 0xed83f, 0xeda53, 0xedc48, 0xede3d, 0xee050, 0xee244, 0xee439, 0xee64d,
  37. 0xee842, 0xeea36, 0xeec4a, 0xeee3e, 0xef052, 0xef246, 0xef43a, 0xef64e, 0xef843, 0xefa37, 0xefc4b, 0xefe41,
  38. 0xf0054, 0xf0248, 0xf043c, 0xf0650, 0xf0845, 0xf0a38, 0xf0c4d, 0xf0e42, 0xf1037, 0xf124a, 0xf143e, 0xf1651,
  39. 0xf1846, 0xf1a3a, 0xf1c4e, 0xf1e44, 0xf2038, 0xf224b, 0xf243f, 0xf2653, 0xf2848, 0xf2a3b, 0xf2c4f, 0xf2e45,
  40. 0xf3039, 0xf324d, 0xf3442, 0xf3636, 0xf384a, 0xf3a3d, 0xf3c51, 0xf3e46, 0xf403b, 0xf424e, 0xf4443, 0xf4638,
  41. 0xf484c, 0xf4a3f, 0xf4c52, 0xf4e48, 0xf503c, 0xf524f, 0xf5445, 0xf5639, 0xf584d, 0xf5a42, 0xf5c35, 0xf5e49,
  42. 0xf603e, 0xf6251, 0xf6446, 0xf663b, 0xf684f, 0xf6a43, 0xf6c37, 0xf6e4b, 0xf703f, 0xf7252, 0xf7447, 0xf763c,
  43. 0xf7850, 0xf7a45, 0xf7c39, 0xf7e4d, 0xf8042, 0xf8254, 0xf8449, 0xf863d, 0xf8851, 0xf8a46, 0xf8c3b, 0xf8e4f,
  44. 0xf9044, 0xf9237, 0xf944a, 0xf963f, 0xf9853, 0xf9a47, 0xf9c3c, 0xf9e50, 0xfa045, 0xfa238, 0xfa44c, 0xfa641,
  45. 0xfa836, 0xfaa49, 0xfac3d, 0xfae52, 0xfb047, 0xfb23a, 0xfb44e, 0xfb643, 0xfb837, 0xfba4a, 0xfbc3f, 0xfbe53,
  46. 0xfc048, 0xfc23c, 0xfc450, 0xfc645, 0xfc839, 0xfca4c, 0xfcc41, 0xfce36, 0xfd04a, 0xfd23d, 0xfd451, 0xfd646,
  47. 0xfd83a, 0xfda4d, 0xfdc43, 0xfde37, 0xfe04b, 0xfe23f, 0xfe453, 0xfe648, 0xfe83c, 0xfea4f, 0xfec44, 0xfee38,
  48. 0xff04c, 0xff241, 0xff436, 0xff64a, 0xff83e, 0xffa51, 0xffc46, 0xffe3a, 0x10004e, 0x100242, 0x100437,
  49. 0x10064b, 0x100841, 0x100a53, 0x100c48, 0x100e3c, 0x10104f, 0x101244, 0x101438, 0x10164c, 0x101842, 0x101a35,
  50. 0x101c49, 0x101e3d, 0x102051, 0x102245, 0x10243a, 0x10264e, 0x102843, 0x102a37, 0x102c4b, 0x102e3f, 0x103053,
  51. 0x103247, 0x10343b, 0x10364f, 0x103845, 0x103a38, 0x103c4c, 0x103e42, 0x104036, 0x104249, 0x10443d, 0x104651,
  52. 0x104846, 0x104a3a, 0x104c4e, 0x104e43, 0x105038, 0x10524a, 0x10543e, 0x105652, 0x105847, 0x105a3b, 0x105c4f,
  53. 0x105e45, 0x106039, 0x10624c, 0x106441, 0x106635, 0x106849, 0x106a3d, 0x106c51, 0x106e47, 0x10703c, 0x10724f,
  54. 0x107444, 0x107638, 0x10784c, 0x107a3f, 0x107c53, 0x107e48
  55. };
  56. public static int GetBitInt(int data, int length, int shift)
  57. {
  58. return (data & (((1 << length) - 1) << shift)) >> shift;
  59. }
  60. //WARNING: Dates before Oct. 1582 are inaccurate
  61. public static long SolarToInt(int y, int m, int d)
  62. {
  63. m = (m + 9) % 12;
  64. y = y - m / 10;
  65. return 365 * y + y / 4 - y / 100 + y / 400 + (m * 306 + 5) / 10 + (d - 1);
  66. }
  67. public static Solar SolarFromInt(long g)
  68. {
  69. long y = (10000 * g + 14780) / 3652425;
  70. long ddd = g - (365 * y + y / 4 - y / 100 + y / 400);
  71. if (ddd < 0)
  72. {
  73. y--;
  74. ddd = g - (365 * y + y / 4 - y / 100 + y / 400);
  75. }
  76. long mi = (100 * ddd + 52) / 3060;
  77. long mm = (mi + 2) % 12 + 1;
  78. y = y + (mi + 2) / 12;
  79. long dd = ddd - (mi * 306 + 5) / 10 + 1;
  80. var solar = new Solar();
  81. solar.solarYear = (int)y;
  82. solar.solarMonth = (int)mm;
  83. solar.solarDay = (int)dd;
  84. return solar;
  85. }
  86. private static bool IsLeapYear(int y)
  87. {
  88. return ((y % 4 == 0 && y % 100 != 0) || (y % 400 == 0));
  89. }
  90. public static Solar LunarToSolar(Lunar lunar)
  91. {
  92. int days = lunar_month_days[lunar.lunarYear - lunar_month_days[0]];
  93. int leap = GetBitInt(days, 4, 13);
  94. int offset = 0;
  95. int loopend = leap;
  96. if (!lunar.isleap)
  97. {
  98. if (lunar.lunarMonth <= leap || leap == 0)
  99. {
  100. loopend = lunar.lunarMonth - 1;
  101. }
  102. else
  103. {
  104. loopend = lunar.lunarMonth;
  105. }
  106. }
  107. for (int i = 0; i < loopend; i++)
  108. {
  109. offset += GetBitInt(days, 1, 12 - i) == 1 ? 30 : 29;
  110. }
  111. offset += lunar.lunarDay;
  112. int solar11 = solar_1_1[lunar.lunarYear - solar_1_1[0]];
  113. int y = GetBitInt(solar11, 12, 9);
  114. int m = GetBitInt(solar11, 4, 5);
  115. int d = GetBitInt(solar11, 5, 0);
  116. return SolarFromInt(SolarToInt(y, m, d) + offset - 1);
  117. }
  118. public static Lunar SolarToLunar(Solar solar)
  119. {
  120. var lunar = new Lunar();
  121. int index = solar.solarYear - solar_1_1[0];
  122. int data = (solar.solarYear << 9) | (solar.solarMonth << 5) | (solar.solarDay);
  123. int solar11 = 0;
  124. if (solar_1_1[index] > data)
  125. {
  126. index--;
  127. }
  128. solar11 = solar_1_1[index];
  129. int y = GetBitInt(solar11, 12, 9);
  130. int m = GetBitInt(solar11, 4, 5);
  131. int d = GetBitInt(solar11, 5, 0);
  132. long offset = SolarToInt(solar.solarYear, solar.solarMonth, solar.solarDay) - SolarToInt(y, m, d);
  133. int days = lunar_month_days[index];
  134. int leap = GetBitInt(days, 4, 13);
  135. int lunarY = index + solar_1_1[0];
  136. int lunarM = 1;
  137. int lunarD = 1;
  138. offset += 1;
  139. for (int i = 0; i < 13; i++)
  140. {
  141. int dm = GetBitInt(days, 1, 12 - i) == 1 ? 30 : 29;
  142. if (offset > dm)
  143. {
  144. lunarM++;
  145. offset -= dm;
  146. }
  147. else
  148. {
  149. break;
  150. }
  151. }
  152. lunarD = (int)(offset);
  153. lunar.lunarYear = lunarY;
  154. lunar.lunarMonth = lunarM;
  155. lunar.isleap = false;
  156. if (leap != 0 && lunarM > leap)
  157. {
  158. lunar.lunarMonth = lunarM - 1;
  159. if (lunarM == leap + 1)
  160. {
  161. lunar.isleap = true;
  162. }
  163. }
  164. lunar.lunarDay = lunarD;
  165. return lunar;
  166. }
  167. }
  168. public class Lunar
  169. {
  170. public bool isleap;
  171. public int lunarDay;
  172. public int lunarMonth;
  173. public int lunarYear;
  174. }
  175. public class Solar
  176. {
  177. public int solarDay;
  178. public int solarMonth;
  179. public int solarYear;
  180. }
  181. }