[TABLE] [TR] [TD="class: gutter"]1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 [/TD] [TD="class: code"]unit UDate; interface type t_date = record y, m, d : word; end; procedure ShToM(var sh, m : t_date); procedure MToSh(var m, sh : t_date); implementation uses sysUtils; type tt_date = record y, m, d : longint; end; Const MKMONTH = 2; SHKMONTH = 12; SHRYEAR = 1358; SHRMONTH = 10; SHRDAY = 11; MRYEAR = 1980; MRMONTH = 1; MRDAY = 1; _SHRYEAR = 1358; _SHRMONTH = 1; _SHRDAY = 1; _MRYEAR = 1979; _MRMONTH = 3; _MRDAY = 21; sh_month : array [1..12] of integer = (31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29); sh_k_month : array [1..12] of integer = (31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30); m_month : array [1..12] of integer = (31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); m_k_month : array [1..12] of integer = (31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); MaxKYears = 63; sh_k_years : array [1.. MaxKYears] of integer = (1197, 1201, 1205, 1210, 1214, 1218, 1222, 1226, 1230, 1234, 1238, 1243, 1247, 1251, 1255, 1259, 1263, 1267, 1271, 1276, 1280, 1284, 1288, 1292, 1296, 1300, 1304, 1309, 1313, 1317, 1321, 1325, 1329, 1333, 1337, 1342, 1346, 1350, 1354, 1358, 1362, 1366, 1370, 1375, 1379, 1383, 1387, 1391, 1395, 1399, 1403, 1408, 1412, 1416, 1420, 1424, 1428, 1432, 1436, 1441, 1445, 1449, 1453); function sh_is_k(y : integer) : boolean; var i : integer; begin if y < 100 then y := y + 1300; sh_is_k := false; for i := 1 to MaxKYears do if sh_k_years = y then begin sh_is_k := true; exit; end; end; function m_elapsed(m : t_date) : longint; var mt, rt : TDateTime; el : real; begin rt := EncodeDate(MRYEAR, MRMONTH, MRDAY); mt := EncodeDate(m.y, m.m, m.d); el := mt - rt; m_elapsed := trunc(el); end; function sh_elapsed(sh : t_date) : longint; var el, i : longint; sh_k : boolean; begin el := 0; sh_k := sh_is_k(sh.y); // sh_elapsed := 0; if sh.y < 100 then sh.y := sh.y + 1300; if sh.y < _SHRYEAR then begin el := (longint(sh.y+1) - _SHRYEAR) * 365; for i := _SHRYEAR downto sh.y+1 do if sh_is_k(i) then dec(el); for i := 12 downto sh.m+1 do if sh_k then el := el - sh_k_month else el := el - sh_month; if sh_k then el := el - (sh_k_month[sh.m] - sh.d) else el := el - (sh_month[sh.m] - sh.d); end else begin if sh.y > _SHRYEAR then el := el + (sh.y - _SHRYEAR) * 365; for i := _SHRYEAR to sh.y-1 do if sh_is_k(i) then inc(el); for i := 1 to sh.m-1 do if sh_k then el := el + sh_k_month else el := el + sh_month; el := el + sh.d - _SHRDAY; end; sh_elapsed := el; end; procedure sh_add(var sht : t_date; el : longint); var mt, yt : longint; sh : tt_date; begin if el = 0 then exit; sh.y := sht.y; sh.m := sht.m; sh.d := sht.d; if el < 0 then begin while abs(el) >= 366 do begin if (sh_is_k(sh.y) and (sh.m >= SHKMONTH)) or (sh_is_k(sh.y-1) and (sh.m < SHKMONTH)) then el := el + 366 else el := el + 365; dec(sh.y); end; yt := sh.y; mt := sh.m - 1; if mt < 1 then begin mt := 12; dec(yt); end; while (sh_is_k(yt) and (abs(el) > sh_k_month[mt])) or (not sh_is_k(yt) and (abs(el) > sh_month[mt])) do begin if(sh_is_k(yt)) then el := el + sh_k_month[mt] else el := el + sh_month[mt]; dec(sh.m); while sh.m < 1 do begin sh.m := sh.m + 12; dec(sh.y); end; yt := sh.y; mt := sh.m - 1; if mt < 1 then begin mt := 12; dec(yt); end; end; sh.d := sh.d + el; while (sh.d <= 0) do begin yt := sh.y; mt := sh.m - 1; if mt < 1 then begin mt := 12; dec(yt); end; if(sh_is_k(yt)) then sh.d := sh.d + sh_k_month[mt] else sh.d := sh.d + sh_month[mt]; dec(sh.m); while sh.m < 1 do begin sh.m := sh.m + 12; dec(sh.y); end; end; end else begin while el >= 366 do begin if (sh_is_k(sh.y) and (sh.m <= SHKMONTH)) or (sh_is_k(sh.y+1) and (sh.m > SHKMONTH)) then el := el - 366 else el := el - 365; inc(sh.y); end; while (sh_is_k(sh.y) and (el > sh_k_month[sh.m])) or (not sh_is_k(sh.y) and (el > sh_month[sh.m])) do begin if(sh_is_k(sh.y)) then el := el - sh_k_month[sh.m] else el := el - sh_month[sh.m]; inc(sh.m); while sh.m > 12 do begin sh.m := sh.m - 12; inc(sh.y); end; end; sh.d := sh.d + el; while (sh_is_k(sh.y) and (sh.d > sh_k_month[sh.m])) or (not sh_is_k(sh.y) and (sh.d > sh_month[sh.m])) do begin if(sh_is_k(sh.y)) then sh.d := sh.d - sh_k_month[sh.m] else sh.d := sh.d - sh_month[sh.m]; inc(sh.m); while sh.m > 12 do begin sh.m := sh.m - 12; inc(sh.y); end; end; end; sht.y := sh.y; sht.m := sh.m; sht.d := sh.d; end; procedure m_add(var m : t_date; el : longint); var mt : TDateTime; begin mt := EncodeDate(m.y, m.m, m.d); mt := mt + el; DecodeDate(mt, m.y, m.m, m.d); end; procedure MToSh(var m, sh : t_date); var el : longint; begin { 1358/10/11 = 1980/1/1 } el := m_elapsed(m); sh.y := SHRYEAR; sh.m := SHRMONTH; sh.d := SHRDAY; sh_add(sh, el); end; procedure ShToM(var sh, m : t_date); var el : longint; begin { 1358/1/1 = 1979/3/21 } el := sh_elapsed(sh); m.y := _MRYEAR; m.m := _MRMONTH; m.d := _MRDAY; m_add(m, el); end; end. [/TD] [/TR] [/TABLE]