1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * Phong Vo <kpv@research.att.com> * 20 * * 21 ***********************************************************************/ 22 #pragma prototyped 23 /* 24 * Glenn Fowler 25 * AT&T Research 26 * 27 * time conversion support readonly data 28 */ 29 30 #include <ast.h> 31 #include <tm.h> 32 33 /* 34 * default format strings -- must agree with TM_* indices 35 */ 36 37 static char* format[] = 38 { 39 "Jan", "Feb", "Mar", "Apr", 40 "May", "Jun", "Jul", "Aug", 41 "Sep", "Oct", "Nov", "Dec", 42 43 "January", "February", "March", "April", 44 "May", "June", "July", "August", 45 "September", "October", "November", "December", 46 47 "Sun", "Mon", "Tue", "Wed", 48 "Thu", "Fri", "Sat", 49 50 "Sunday", "Monday", "Tuesday", "Wednesday", 51 "Thursday", "Friday", "Saturday", 52 53 "%H:%M:%S", "%m/%d/%y", "%a %b %e %T %Z %Y", 54 55 "AM", "PM", 56 57 "GMT", "UTC", "UCT", "CUT", 58 59 "DST", "", "", "", 60 61 "s", "es", "", "", 62 63 "second", "minute", "hour", "day", 64 "week", "month", "year", 65 66 "midnight", "morning", "noon", "evening", 67 68 "yesterday", "today", "tomorrow", 69 70 "last", "ago", "past", 71 "this", "now", "current", 72 "in", "next", "hence", 73 "exactly", "", "", 74 75 "at", "on", "", "", 76 77 "st", "nd", "rd", "th", "th", 78 "th", "th", "th", "th", "th", 79 80 "", "", "", "", "", 81 "", "", "", "", "", 82 83 "%a %b %e %T %Y", 84 "%a %b %e %T %Z %Y", 85 "%a %b %e %T %z %Z %Y", 86 "%b %e %H:%M", 87 "%b %e %Y", 88 "%I:%M:%S %p", 89 90 "", "", "", "", "", 91 92 "first", "", "third", "fourth", "fifth", 93 "sixth", "seventh", "eighth", "ninth", "tenth", 94 95 "final", "ending", "nth", 96 }; 97 98 /* 99 * format[] lex type classes 100 */ 101 102 static char lex[] = 103 { 104 TM_MONTH_ABBREV,TM_MONTH_ABBREV,TM_MONTH_ABBREV,TM_MONTH_ABBREV, 105 TM_MONTH_ABBREV,TM_MONTH_ABBREV,TM_MONTH_ABBREV,TM_MONTH_ABBREV, 106 TM_MONTH_ABBREV,TM_MONTH_ABBREV,TM_MONTH_ABBREV,TM_MONTH_ABBREV, 107 108 TM_MONTH, TM_MONTH, TM_MONTH, TM_MONTH, 109 TM_MONTH, TM_MONTH, TM_MONTH, TM_MONTH, 110 TM_MONTH, TM_MONTH, TM_MONTH, TM_MONTH, 111 112 TM_DAY_ABBREV, TM_DAY_ABBREV, TM_DAY_ABBREV, TM_DAY_ABBREV, 113 TM_DAY_ABBREV, TM_DAY_ABBREV, TM_DAY_ABBREV, 114 115 TM_DAY, TM_DAY, TM_DAY, TM_DAY, 116 TM_DAY, TM_DAY, TM_DAY, 117 118 0, 0, 0, 119 120 TM_MERIDIAN, TM_MERIDIAN, 121 122 TM_UT, TM_UT, TM_UT, TM_UT, 123 TM_DT, TM_DT, TM_DT, TM_DT, 124 125 TM_SUFFIXES, TM_SUFFIXES, TM_SUFFIXES, TM_SUFFIXES, 126 127 TM_PARTS, TM_PARTS, TM_PARTS, TM_PARTS, 128 TM_PARTS, TM_PARTS, TM_PARTS, 129 130 TM_HOURS, TM_HOURS, TM_HOURS, TM_HOURS, 131 132 TM_DAYS, TM_DAYS, TM_DAYS, 133 134 TM_LAST, TM_LAST, TM_LAST, 135 TM_THIS, TM_THIS, TM_THIS, 136 TM_NEXT, TM_NEXT, TM_NEXT, 137 TM_EXACT, TM_EXACT, TM_EXACT, 138 139 TM_NOISE, TM_NOISE, TM_NOISE, TM_NOISE, 140 141 TM_ORDINAL, TM_ORDINAL, TM_ORDINAL, TM_ORDINAL, TM_ORDINAL, 142 TM_ORDINAL, TM_ORDINAL, TM_ORDINAL, TM_ORDINAL, TM_ORDINAL, 143 144 0, 0, 0, 0, 0, 145 0, 0, 0, 0, 0, 146 147 0, 0, 0, 148 0, 0, 0, 149 150 0, 0, 0, 0, 0, 151 152 TM_ORDINALS, TM_ORDINALS, TM_ORDINALS, TM_ORDINALS, TM_ORDINALS, 153 TM_ORDINALS, TM_ORDINALS, TM_ORDINALS, TM_ORDINALS, TM_ORDINALS, 154 155 TM_FINAL, TM_FINAL, TM_FINAL, 156 }; 157 158 /* 159 * output format digits 160 */ 161 162 static char digit[] = "0123456789"; 163 164 /* 165 * number of days in month i 166 */ 167 168 static short days[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; 169 170 /* 171 * sum of days in months before month i 172 */ 173 174 static short sum[] = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }; 175 176 /* 177 * leap second time_t and accumulated adjustments 178 * (reverse order -- biased for recent dates) 179 * 180 * tl.time is the seconds since the epoch for the leap event 181 * 182 * adding: the first additional second 183 * subtracting: the first dissappearing second 184 */ 185 186 static Tm_leap_t leap[] = 187 { 188 946684822, 23, /* 1999-12-31+23:59:60 UTC*/ 189 915148821, 22, /* 1998-12-31+23:59:60 UTC */ 190 867715220, 21, /* 1997-06-30+23:59:60 UTC */ 191 820454419, 20, /* 1995-12-31+23:59:60 UTC */ 192 773020818, 19, /* 1994-06-30+23:59:60 UTC */ 193 741484817, 18, /* 1993-06-30+23:59:60 UTC */ 194 709948816, 17, /* 1992-06-30+23:59:60 UTC */ 195 662688015, 16, /* 1990-12-31+23:59:60 UTC */ 196 631152014, 15, /* 1989-12-31+23:59:60 UTC */ 197 567993613, 14, /* 1987-12-31+23:59:60 UTC */ 198 489024012, 13, /* 1985-06-30+23:59:60 UTC */ 199 425865611, 12, /* 1983-06-30+23:59:60 UTC */ 200 394329610, 11, /* 1982-06-30+23:59:60 UTC */ 201 362793609, 10, /* 1981-06-30+23:59:60 UTC */ 202 315532808, 9, /* 1979-12-31+23:59:60 UTC */ 203 283996807, 8, /* 1978-12-31+23:59:60 UTC */ 204 252460806, 7, /* 1977-12-31+23:59:60 UTC */ 205 220924805, 6, /* 1976-12-31+23:59:60 UTC */ 206 189302404, 5, /* 1975-12-31+23:59:60 UTC */ 207 157766403, 4, /* 1974-12-31+23:59:60 UTC */ 208 126230402, 3, /* 1973-12-31+23:59:60 UTC */ 209 94694401, 2, /* 1972-12-31+23:59:60 UTC */ 210 78796800, 1, /* 1972-06-30+23:59:60 UTC */ 211 0, 0, /* can reference (tl+1) */ 212 0, 0 213 }; 214 215 /* 216 * time zones 217 * 218 * the UTC entries must be first 219 * 220 * zones with the same type are contiguous with all but the 221 * first entry for the type having a null type 222 * 223 * tz.standard is the sentinel 224 */ 225 226 static Tm_zone_t zone[] = 227 { 228 0, "GMT", 0, ( 0 * 60), 0, /* UTC */ 229 0, "UCT", 0, ( 0 * 60), 0, /* UTC */ 230 0, "UTC", 0, ( 0 * 60), 0, /* UTC */ 231 0, "CUT", 0, ( 0 * 60), 0, /* UTC */ 232 "USA", "HST", 0, (10 * 60), 0, /* Hawaii */ 233 0, "YST", "YDT", ( 9 * 60), TM_DST, /* Yukon */ 234 0, "PST", "PDT", ( 8 * 60), TM_DST, /* Pacific */ 235 0, "PST", "PPET", ( 8 * 60), TM_DST, /* Pacific pres elect */ 236 0, "MST", "MDT", ( 7 * 60), TM_DST, /* Mountain */ 237 0, "CST", "CDT", ( 6 * 60), TM_DST, /* Central */ 238 0, "EST", "EDT", ( 5 * 60), TM_DST, /* Eastern */ 239 "CAN", "AST", "ADT", ( 4 * 60), TM_DST, /* Atlantic */ 240 0, "NST", 0, ( 3 * 60 + 30), 0, /* Newfoundland */ 241 "GBR", "", "BST", ( 0 * 60), TM_DST, /* British Summer */ 242 "EUR", "WET", 0, ( 0 * 60), TM_DST, /* Western Eurpoean */ 243 0, "CET", 0, -( 1 * 60), TM_DST, /* Central European */ 244 0, "MET", 0, -( 1 * 60), TM_DST, /* Middle European */ 245 0, "EET", 0, -( 2 * 60), TM_DST, /* Eastern Eurpoean */ 246 "ISR", "IST", "IDT", -( 3 * 60), TM_DST, /* Israel */ 247 "IND", "IST", 0, -( 5 * 60 + 30 ), 0, /* India */ 248 "CHN", "HKT", 0, -( 8 * 60), 0, /* Hong Kong */ 249 "KOR", "KST", "KDT", -( 8 * 60), TM_DST, /* Korea */ 250 "SNG", "SST", 0, -( 8 * 60), 0, /* Singapore */ 251 "JPN", "JST", 0, -( 9 * 60), 0, /* Japan */ 252 "AUS", "AWST", 0, -( 8 * 60), 0, /* Australia Western */ 253 0, "WST", 0, -( 8 * 60), 0, /* Australia Western */ 254 0, "ACST", 0, -( 9 * 60 + 30),TM_DST, /* Australia Central */ 255 0, "CST", 0, -( 9 * 60 + 30),TM_DST, /* Australia Central */ 256 0, "AEST", 0, -(10 * 60), TM_DST, /* Australia Eastern */ 257 0, "EST", 0, -(10 * 60), TM_DST, /* Australia Eastern */ 258 "NZL", "NZST", "NZDT", -(12 * 60), TM_DST, /* New Zealand */ 259 0, 0, 0, 0, 0 260 }; 261 262 /* 263 * 2007-03-19 move tm_data from _tm_data_ to (*_tm_datap_) 264 * to allow future Tm_data_t growth 265 * by 2009 _tm_data_ can be static 266 */ 267 268 #if _BLD_ast && defined(__EXPORT__) 269 #define extern extern __EXPORT__ 270 #endif 271 272 extern Tm_data_t _tm_data_; 273 274 #undef extern 275 276 Tm_data_t _tm_data_ = { format, lex, digit, days, sum, leap, zone }; 277 278 __EXTERN__(Tm_data_t, _tm_data_); 279 280 __EXTERN__(Tm_data_t*, _tm_datap_); 281 282 Tm_data_t* _tm_datap_ = &_tm_data_; 283