305 lines
8.4 KiB
Dart
305 lines
8.4 KiB
Dart
import 'dart:core';
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// Run in console on http://www.kumamotokokufu-h.ed.jp/kumamoto/bungaku/nengoui.html
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// Array.from(document.querySelectorAll('table')[1].querySelectorAll('tr')).slice(1).map(row => `DateTime(${row.children[3 + (row.children.length == 7)].innerHTML.replace(/～.*/, '')}, ${row.children[4 + (row.children.length == 7)].innerHTML.replace('/', ', ')}): '${row.children[2 + (row.children.length == 7)].innerHTML}'`).join('\n')
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const Map<(int, int, int), String> periodsBeforeNanbokuchou = {
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(645, 6, 19): '大化',
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(650, 2, 15): '白雉',
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(686, 7, 20): '朱鳥',
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(701, 3, 21): '大宝',
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(704, 5, 10): '慶雲',
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(708, 1, 11): '和銅',
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(715, 9, 2): '霊亀',
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(717, 11, 17): '養老',
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(724, 2, 4): '神亀',
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(729, 8, 5): '天平',
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(749, 4, 14): '天平感宝',
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(749, 7, 2): '天平勝宝',
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(757, 8, 18): '天平宝字',
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(765, 1, 7): '天平神護',
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(767, 8, 16): '神護景雲',
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(770, 10, 1): '宝亀',
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(781, 1, 1): '天応',
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(782, 8, 19): '延暦',
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(806, 5, 18): '大同',
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(810, 9, 19): '弘仁',
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(824, 1, 5): '天長',
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(834, 1, 3): '承和',
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(848, 6, 13): '嘉祥',
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(851, 4, 28): '仁寿',
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(854, 11, 30): '斎衡',
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(857, 2, 21): '天安',
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(859, 4, 15): '貞観',
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(877, 4, 16): '元慶',
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(885, 2, 21): '仁和',
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(889, 4, 27): '寛平',
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(898, 4, 26): '昌泰',
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(901, 7, 15): '延喜',
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(923, 4, 11): '延長',
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(931, 4, 26): '承平',
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(938, 5, 22): '天慶',
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(947, 4, 22): '天暦',
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(957, 10, 27): '天徳',
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(961, 2, 16): '応和',
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(964, 7, 10): '康保',
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(968, 8, 13): '安和',
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(970, 3, 25): '天禄',
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(973, 12, 20): '天延',
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(976, 7, 13): '貞元',
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(978, 11, 29): '天元',
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(983, 4, 15): '永観',
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(985, 4, 27): '寛和',
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(987, 4, 5): '永延',
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(989, 8, 8): '永祚',
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(990, 11, 7): '正暦',
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(995, 2, 22): '長徳',
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(999, 1, 13): '長保',
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(1004, 7, 20): '寛弘',
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(1012, 12, 25): '長和',
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(1017, 4, 23): '寛仁',
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(1021, 2, 2): '治安',
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(1024, 7, 13): '万寿',
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(1028, 7, 25): '長元',
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(1037, 4, 21): '長暦',
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(1040, 11, 10): '長久',
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(1044, 11, 24): '寛徳',
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(1046, 4, 14): '永承',
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(1053, 1, 11): '天喜',
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(1058, 8, 29): '康平',
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(1065, 8, 2): '治暦',
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(1069, 4, 13): '延久',
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(1074, 8, 23): '承保',
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(1077, 11, 17): '承暦',
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(1081, 2, 10): '永保',
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(1084, 2, 7): '応徳',
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(1087, 4, 7): '寛治',
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(1094, 12, 15): '嘉保',
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(1096, 12, 17): '永長',
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(1097, 11, 21): '承徳',
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(1099, 8, 28): '康和',
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(1104, 2, 10): '長治',
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(1106, 4, 9): '嘉承',
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(1108, 8, 3): '天仁',
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(1110, 7, 13): '天永',
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(1113, 7, 13): '永久',
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(1118, 4, 3): '元永',
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(1120, 4, 10): '保安',
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(1124, 4, 3): '天治',
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(1126, 1, 22): '大治',
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(1131, 1, 29): '天承',
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(1132, 8, 11): '長承',
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(1135, 4, 27): '保延',
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(1141, 7, 10): '永治',
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(1142, 4, 28): '康治',
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(1144, 2, 23): '天養',
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(1145, 7, 22): '久安',
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(1151, 1, 26): '仁平',
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(1154, 10, 28): '久寿',
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(1156, 4, 27): '保元',
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(1159, 4, 20): '平治',
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(1160, 1, 10): '永暦',
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(1161, 9, 4): '応保',
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(1163, 3, 29): '長寛',
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(1165, 6, 5): '永万',
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(1166, 8, 27): '仁安',
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(1169, 4, 8): '嘉応',
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(1171, 4, 21): '承安',
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(1175, 7, 28): '安元',
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(1177, 8, 4): '治承',
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(1181, 7, 14): '養和',
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(1182, 5, 27): '寿永',
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(1184, 4, 16): '元暦',
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(1185, 8, 14): '文治',
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(1190, 4, 11): '建久',
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(1199, 4, 27): '正治',
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(1201, 2, 13): '建仁',
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(1204, 2, 20): '元久',
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(1206, 4, 27): '建永',
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(1207, 10, 25): '承元',
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(1211, 3, 9): '建暦',
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(1213, 12, 6): '建保',
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(1219, 4, 12): '承久',
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(1222, 4, 13): '貞応',
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(1224, 11, 20): '元仁',
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(1225, 4, 20): '嘉禄',
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(1227, 12, 10): '安貞',
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(1229, 3, 5): '寛喜',
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(1232, 4, 2): '貞永',
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(1233, 4, 15): '天福',
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(1234, 11, 5): '文暦',
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(1235, 9, 19): '嘉禎',
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(1238, 11, 23): '暦仁',
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(1239, 2, 7): '延応',
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(1240, 7, 16): '仁治',
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(1243, 2, 26): '寛元',
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(1247, 2, 28): '宝治',
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(1249, 3, 18): '建長',
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(1256, 10, 5): '康元',
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(1257, 3, 14): '正嘉',
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(1259, 3, 26): '正元',
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(1260, 4, 13): '文応',
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(1261, 2, 20): '弘長',
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(1264, 2, 28): '文永',
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(1275, 4, 25): '建治',
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(1278, 2, 29): '弘安',
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(1288, 4, 28): '正応',
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(1293, 8, 5): '永仁',
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(1299, 4, 25): '正安',
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(1302, 11, 21): '乾元',
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(1303, 8, 5): '嘉元',
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(1306, 12, 14): '徳治',
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(1308, 10, 9): '延慶',
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(1311, 4, 28): '応長',
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(1312, 3, 20): '正和',
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(1317, 2, 3): '文保',
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(1319, 4, 28): '元応',
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(1321, 2, 23): '元亨',
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(1324, 12, 9): '正中',
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(1326, 4, 26): '嘉暦',
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};
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const Map<(int, int, int), String> periodsNanbokuchouNorth = {
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(1329, 8, 29): '元徳',
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(1332, 4, 28): '正慶',
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(1334, 1, 29): '建武',
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(1338, 8, 28): '暦応',
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(1342, 4, 27): '康永',
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(1345, 10, 21): '貞和',
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(1350, 2, 27): '観応',
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(1352, 9, 27): '文和',
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(1356, 3, 28): '延文',
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(1361, 3, 29): '康安',
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(1362, 9, 23): '貞治',
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(1368, 2, 18): '応安',
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(1375, 2, 27): '永和',
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(1379, 3, 22): '康暦',
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(1381, 2, 24): '永徳',
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(1384, 2, 27): '至徳',
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(1387, 8, 23): '嘉慶',
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(1389, 2, 9): '康応',
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(1390, 3, 26): '明徳',
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};
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const Map<(int, int, int), String> periodsNanbokuchouSouth = {
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(1329, 8, 29): '元徳',
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(1331, 8, 9): '元弘',
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(1334, 1, 29): '建武',
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(1336, 2, 29): '延元',
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(1340, 4, 28): '興国',
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(1346, 12, 8): '正平',
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(1370, 7, 24): '建徳',
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(1372, 4, 4): '文中',
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(1375, 5, 27): '天授',
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(1381, 2, 10): '弘和',
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(1384, 4, 28): '元中',
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};
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const Map<(int, int, int), String> periodsAfterNanbokuchou = {
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// (1392, ): '室町時代',
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(1394, 7, 5): '応永',
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(1428, 4, 27): '正長',
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(1429, 9, 5): '永享',
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(1441, 2, 17): '嘉吉',
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(1444, 2, 5): '文安',
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(1449, 7, 28): '宝徳',
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(1452, 7, 25): '享徳',
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(1455, 7, 25): '康正',
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(1457, 9, 28): '長禄',
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(1460, 12, 21): '寛正',
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(1466, 2, 28): '文正',
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(1467, 3, 5): '応仁',
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(1469, 4, 28): '文明',
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(1487, 7, 20): '長享',
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(1489, 8, 21): '延徳',
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(1492, 7, 19): '明応',
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(1501, 2, 29): '文亀',
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(1504, 2, 30): '永正',
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(1521, 8, 23): '大永',
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(1528, 8, 20): '享禄',
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(1532, 7, 29): '天文',
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(1555, 10, 23): '弘治',
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(1558, 2, 28): '永禄',
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(1570, 4, 23): '元亀',
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(1573, 7, 28): '天正',
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(1592, 12, 8): '文禄',
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(1596, 10, 27): '慶長',
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(1615, 7, 13): '元和',
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(1624, 2, 30): '寛永',
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(1644, 12, 16): '正保',
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(1648, 2, 15): '慶安',
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(1652, 9, 18): '承応',
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(1655, 4, 13): '明暦',
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(1658, 7, 23): '万治',
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(1661, 4, 25): '寛文',
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(1673, 9, 21): '延宝',
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(1681, 9, 29): '天和',
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(1684, 2, 21): '貞享',
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(1688, 9, 30): '元禄',
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(1704, 3, 13): '宝永',
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(1711, 4, 25): '正徳',
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(1716, 6, 22): '享保',
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(1736, 4, 28): '元文',
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(1741, 2, 27): '寛保',
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(1744, 2, 21): '延享',
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(1748, 7, 12): '寛延',
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(1751, 10, 27): '宝暦',
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(1764, 6, 2): '明和',
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(1772, 11, 16): '安永',
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(1781, 4, 2): '天明',
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(1789, 1, 25): '寛政',
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(1801, 2, 5): '享和',
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(1804, 2, 11): '文化',
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(1818, 4, 22): '文政',
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(1830, 12, 10): '天保',
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(1844, 12, 2): '弘化',
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(1848, 2, 28): '嘉永',
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(1854, 11, 27): '安政',
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(1860, 3, 18): '万延',
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(1861, 2, 19): '文久',
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(1864, 2, 20): '元治',
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(1865, 4, 7): '慶応',
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(1868, 9, 8): '明治',
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(1912, 7, 30): '大正',
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(1926, 12, 25): '昭和',
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(1989, 1, 8): '平成',
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(2019, 5, 1): '令和',
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};
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extension on DateTime {
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/// Note: In the years between 1336 and 1392, Japan was split in two
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/// because of an ongoing conflict. As a result, Japan has two timelines
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/// during these years. Unless you turn off [nanbokuchouPeriodUsesNorth],
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/// function will give you the timeline from the northern part of Japan
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/// as a default.
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///
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/// See more info here:
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/// - https://en.wikipedia.org/wiki/Nanboku-ch%C5%8D_period
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/// - http://www.kumamotokokufu-h.ed.jp/kumamoto/bungaku/nengoui.html
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String? japaneseEra({bool nanbokuchouPeriodUsesNorth = true}) {
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throw UnimplementedError('This function is not implemented yet.');
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if (this.year < 645) {
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return null;
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}
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if (this.year < periodsNanbokuchouNorth.keys.first.$1) {
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// TODO: find first where year <= this.year and jump one period back.
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}
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}
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String get japaneseWeekdayPrefix => [
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'月',
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'火',
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'水',
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'木',
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'金',
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'土',
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'日',
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][weekday - 1];
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/// Returns the date in Japanese format.
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String japaneseDate({bool showWeekday = false}) =>
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'$month月$day日' + (showWeekday ? '（$japaneseWeekdayPrefix）' : '');
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}
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