| File: | pr/Linux4.19_x86_64_gcc_glibc_PTH_64_DBG.OBJ/pr/src/misc/../../../../pr/src/misc/prtime.c |
| Warning: | line 1669, column 9 Value stored to 'zone' is never read |
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| 1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| 5 | |
| 6 | /* |
| 7 | * prtime.c -- |
| 8 | * |
| 9 | * NSPR date and time functions |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include "prinit.h" |
| 14 | #include "prtime.h" |
| 15 | #include "prlock.h" |
| 16 | #include "prprf.h" |
| 17 | #include "prlog.h" |
| 18 | |
| 19 | #include <string.h> |
| 20 | #include <ctype.h> |
| 21 | #include <errno(*__errno_location ()).h> /* for EINVAL */ |
| 22 | #include <time.h> |
| 23 | |
| 24 | /* |
| 25 | * The COUNT_LEAPS macro counts the number of leap years passed by |
| 26 | * till the start of the given year Y. At the start of the year 4 |
| 27 | * A.D. the number of leap years passed by is 0, while at the start of |
| 28 | * the year 5 A.D. this count is 1. The number of years divisible by |
| 29 | * 100 but not divisible by 400 (the non-leap years) is deducted from |
| 30 | * the count to get the correct number of leap years. |
| 31 | * |
| 32 | * The COUNT_DAYS macro counts the number of days since 01/01/01 till the |
| 33 | * start of the given year Y. The number of days at the start of the year |
| 34 | * 1 is 0 while the number of days at the start of the year 2 is 365 |
| 35 | * (which is ((2)-1) * 365) and so on. The reference point is 01/01/01 |
| 36 | * midnight 00:00:00. |
| 37 | */ |
| 38 | |
| 39 | #define COUNT_LEAPS(Y)( ((Y)-1)/4 - ((Y)-1)/100 + ((Y)-1)/400 ) ( ((Y)-1)/4 - ((Y)-1)/100 + ((Y)-1)/400 ) |
| 40 | #define COUNT_DAYS(Y)( ((Y)-1)*365 + ( ((Y)-1)/4 - ((Y)-1)/100 + ((Y)-1)/400 ) ) ( ((Y)-1)*365 + COUNT_LEAPS(Y)( ((Y)-1)/4 - ((Y)-1)/100 + ((Y)-1)/400 ) ) |
| 41 | #define DAYS_BETWEEN_YEARS(A, B)(( ((B)-1)*365 + ( ((B)-1)/4 - ((B)-1)/100 + ((B)-1)/400 ) ) - ( ((A)-1)*365 + ( ((A)-1)/4 - ((A)-1)/100 + ((A)-1)/400 ) )) (COUNT_DAYS(B)( ((B)-1)*365 + ( ((B)-1)/4 - ((B)-1)/100 + ((B)-1)/400 ) ) - COUNT_DAYS(A)( ((A)-1)*365 + ( ((A)-1)/4 - ((A)-1)/100 + ((A)-1)/400 ) )) |
| 42 | |
| 43 | /* |
| 44 | * Static variables used by functions in this file |
| 45 | */ |
| 46 | |
| 47 | /* |
| 48 | * The following array contains the day of year for the last day of |
| 49 | * each month, where index 1 is January, and day 0 is January 1. |
| 50 | */ |
| 51 | |
| 52 | static const int lastDayOfMonth[2][13] = { |
| 53 | {-1, 30, 58, 89, 119, 150, 180, 211, 242, 272, 303, 333, 364}, |
| 54 | {-1, 30, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365} |
| 55 | }; |
| 56 | |
| 57 | /* |
| 58 | * The number of days in a month |
| 59 | */ |
| 60 | |
| 61 | static const PRInt8 nDays[2][12] = { |
| 62 | {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, |
| 63 | {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31} |
| 64 | }; |
| 65 | |
| 66 | /* |
| 67 | * Declarations for internal functions defined later in this file. |
| 68 | */ |
| 69 | |
| 70 | static void ComputeGMT(PRTime time, PRExplodedTime *gmt); |
| 71 | static int IsLeapYear(PRInt16 year); |
| 72 | static void ApplySecOffset(PRExplodedTime *time, PRInt32 secOffset); |
| 73 | |
| 74 | /* |
| 75 | *------------------------------------------------------------------------ |
| 76 | * |
| 77 | * ComputeGMT -- |
| 78 | * |
| 79 | * Caveats: |
| 80 | * - we ignore leap seconds |
| 81 | * |
| 82 | *------------------------------------------------------------------------ |
| 83 | */ |
| 84 | |
| 85 | static void |
| 86 | ComputeGMT(PRTime time, PRExplodedTime *gmt) |
| 87 | { |
| 88 | PRInt32 tmp, rem; |
| 89 | PRInt32 numDays; |
| 90 | PRInt64 numDays64, rem64; |
| 91 | int isLeap; |
| 92 | PRInt64 sec; |
| 93 | PRInt64 usec; |
| 94 | PRInt64 usecPerSec; |
| 95 | PRInt64 secPerDay; |
| 96 | |
| 97 | /* |
| 98 | * We first do the usec, sec, min, hour thing so that we do not |
| 99 | * have to do LL arithmetic. |
| 100 | */ |
| 101 | |
| 102 | LL_I2L(usecPerSec, 1000000L)((usecPerSec) = (PRInt64)(1000000L)); |
| 103 | LL_DIV(sec, time, usecPerSec)((sec) = (time) / (usecPerSec)); |
| 104 | LL_MOD(usec, time, usecPerSec)((usec) = (time) % (usecPerSec)); |
| 105 | LL_L2I(gmt->tm_usec, usec)((gmt->tm_usec) = (PRInt32)(usec)); |
| 106 | /* Correct for weird mod semantics so the remainder is always positive */ |
| 107 | if (gmt->tm_usec < 0) { |
| 108 | PRInt64 one; |
| 109 | |
| 110 | LL_I2L(one, 1L)((one) = (PRInt64)(1L)); |
| 111 | LL_SUB(sec, sec, one)((sec) = (sec) - (one)); |
| 112 | gmt->tm_usec += 1000000L; |
| 113 | } |
| 114 | |
| 115 | LL_I2L(secPerDay, 86400L)((secPerDay) = (PRInt64)(86400L)); |
| 116 | LL_DIV(numDays64, sec, secPerDay)((numDays64) = (sec) / (secPerDay)); |
| 117 | LL_MOD(rem64, sec, secPerDay)((rem64) = (sec) % (secPerDay)); |
| 118 | /* We are sure both of these numbers can fit into PRInt32 */ |
| 119 | LL_L2I(numDays, numDays64)((numDays) = (PRInt32)(numDays64)); |
| 120 | LL_L2I(rem, rem64)((rem) = (PRInt32)(rem64)); |
| 121 | if (rem < 0) { |
| 122 | numDays--; |
| 123 | rem += 86400L; |
| 124 | } |
| 125 | |
| 126 | /* Compute day of week. Epoch started on a Thursday. */ |
| 127 | |
| 128 | gmt->tm_wday = (numDays + 4) % 7; |
| 129 | if (gmt->tm_wday < 0) { |
| 130 | gmt->tm_wday += 7; |
| 131 | } |
| 132 | |
| 133 | /* Compute the time of day. */ |
| 134 | |
| 135 | gmt->tm_hour = rem / 3600; |
| 136 | rem %= 3600; |
| 137 | gmt->tm_min = rem / 60; |
| 138 | gmt->tm_sec = rem % 60; |
| 139 | |
| 140 | /* |
| 141 | * Compute the year by finding the 400 year period, then working |
| 142 | * down from there. |
| 143 | * |
| 144 | * Since numDays is originally the number of days since January 1, 1970, |
| 145 | * we must change it to be the number of days from January 1, 0001. |
| 146 | */ |
| 147 | |
| 148 | numDays += 719162; /* 719162 = days from year 1 up to 1970 */ |
| 149 | tmp = numDays / 146097; /* 146097 = days in 400 years */ |
| 150 | rem = numDays % 146097; |
| 151 | gmt->tm_year = tmp * 400 + 1; |
| 152 | |
| 153 | /* Compute the 100 year period. */ |
| 154 | |
| 155 | tmp = rem / 36524; /* 36524 = days in 100 years */ |
| 156 | rem %= 36524; |
| 157 | if (tmp == 4) { /* the 400th year is a leap year */ |
| 158 | tmp = 3; |
| 159 | rem = 36524; |
| 160 | } |
| 161 | gmt->tm_year += tmp * 100; |
| 162 | |
| 163 | /* Compute the 4 year period. */ |
| 164 | |
| 165 | tmp = rem / 1461; /* 1461 = days in 4 years */ |
| 166 | rem %= 1461; |
| 167 | gmt->tm_year += tmp * 4; |
| 168 | |
| 169 | /* Compute which year in the 4. */ |
| 170 | |
| 171 | tmp = rem / 365; |
| 172 | rem %= 365; |
| 173 | if (tmp == 4) { /* the 4th year is a leap year */ |
| 174 | tmp = 3; |
| 175 | rem = 365; |
| 176 | } |
| 177 | |
| 178 | gmt->tm_year += tmp; |
| 179 | gmt->tm_yday = rem; |
| 180 | isLeap = IsLeapYear(gmt->tm_year); |
| 181 | |
| 182 | /* Compute the month and day of month. */ |
| 183 | |
| 184 | for (tmp = 1; lastDayOfMonth[isLeap][tmp] < gmt->tm_yday; tmp++) { |
| 185 | } |
| 186 | gmt->tm_month = --tmp; |
| 187 | gmt->tm_mday = gmt->tm_yday - lastDayOfMonth[isLeap][tmp]; |
| 188 | |
| 189 | gmt->tm_params.tp_gmt_offset = 0; |
| 190 | gmt->tm_params.tp_dst_offset = 0; |
| 191 | } |
| 192 | |
| 193 | |
| 194 | /* |
| 195 | *------------------------------------------------------------------------ |
| 196 | * |
| 197 | * PR_ExplodeTime -- |
| 198 | * |
| 199 | * Cf. struct tm *gmtime(const time_t *tp) and |
| 200 | * struct tm *localtime(const time_t *tp) |
| 201 | * |
| 202 | *------------------------------------------------------------------------ |
| 203 | */ |
| 204 | |
| 205 | PR_IMPLEMENT(void)__attribute__((visibility("default"))) void |
| 206 | PR_ExplodeTime( |
| 207 | PRTime usecs, |
| 208 | PRTimeParamFn params, |
| 209 | PRExplodedTime *exploded) |
| 210 | { |
| 211 | ComputeGMT(usecs, exploded); |
| 212 | exploded->tm_params = params(exploded); |
| 213 | ApplySecOffset(exploded, exploded->tm_params.tp_gmt_offset |
| 214 | + exploded->tm_params.tp_dst_offset); |
| 215 | } |
| 216 | |
| 217 | |
| 218 | /* |
| 219 | *------------------------------------------------------------------------ |
| 220 | * |
| 221 | * PR_ImplodeTime -- |
| 222 | * |
| 223 | * Cf. time_t mktime(struct tm *tp) |
| 224 | * Note that 1 year has < 2^25 seconds. So an PRInt32 is large enough. |
| 225 | * |
| 226 | *------------------------------------------------------------------------ |
| 227 | */ |
| 228 | PR_IMPLEMENT(PRTime)__attribute__((visibility("default"))) PRTime |
| 229 | PR_ImplodeTime(const PRExplodedTime *exploded) |
| 230 | { |
| 231 | PRExplodedTime copy; |
| 232 | PRTime retVal; |
| 233 | PRInt64 secPerDay, usecPerSec; |
| 234 | PRInt64 temp; |
| 235 | PRInt64 numSecs64; |
| 236 | PRInt32 numDays; |
| 237 | PRInt32 numSecs; |
| 238 | |
| 239 | /* Normalize first. Do this on our copy */ |
| 240 | copy = *exploded; |
| 241 | PR_NormalizeTime(©, PR_GMTParameters); |
| 242 | |
| 243 | numDays = DAYS_BETWEEN_YEARS(1970, copy.tm_year)(( ((copy.tm_year)-1)*365 + ( ((copy.tm_year)-1)/4 - ((copy.tm_year )-1)/100 + ((copy.tm_year)-1)/400 ) ) - ( ((1970)-1)*365 + ( ( (1970)-1)/4 - ((1970)-1)/100 + ((1970)-1)/400 ) )); |
| 244 | |
| 245 | numSecs = copy.tm_yday * 86400 + copy.tm_hour * 3600 |
| 246 | + copy.tm_min * 60 + copy.tm_sec; |
| 247 | |
| 248 | LL_I2L(temp, numDays)((temp) = (PRInt64)(numDays)); |
| 249 | LL_I2L(secPerDay, 86400)((secPerDay) = (PRInt64)(86400)); |
| 250 | LL_MUL(temp, temp, secPerDay)((temp) = (temp) * (secPerDay)); |
| 251 | LL_I2L(numSecs64, numSecs)((numSecs64) = (PRInt64)(numSecs)); |
| 252 | LL_ADD(numSecs64, numSecs64, temp)((numSecs64) = (numSecs64) + (temp)); |
| 253 | |
| 254 | /* apply the GMT and DST offsets */ |
| 255 | LL_I2L(temp, copy.tm_params.tp_gmt_offset)((temp) = (PRInt64)(copy.tm_params.tp_gmt_offset)); |
| 256 | LL_SUB(numSecs64, numSecs64, temp)((numSecs64) = (numSecs64) - (temp)); |
| 257 | LL_I2L(temp, copy.tm_params.tp_dst_offset)((temp) = (PRInt64)(copy.tm_params.tp_dst_offset)); |
| 258 | LL_SUB(numSecs64, numSecs64, temp)((numSecs64) = (numSecs64) - (temp)); |
| 259 | |
| 260 | LL_I2L(usecPerSec, 1000000L)((usecPerSec) = (PRInt64)(1000000L)); |
| 261 | LL_MUL(temp, numSecs64, usecPerSec)((temp) = (numSecs64) * (usecPerSec)); |
| 262 | LL_I2L(retVal, copy.tm_usec)((retVal) = (PRInt64)(copy.tm_usec)); |
| 263 | LL_ADD(retVal, retVal, temp)((retVal) = (retVal) + (temp)); |
| 264 | |
| 265 | return retVal; |
| 266 | } |
| 267 | |
| 268 | /* |
| 269 | *------------------------------------------------------------------------- |
| 270 | * |
| 271 | * IsLeapYear -- |
| 272 | * |
| 273 | * Returns 1 if the year is a leap year, 0 otherwise. |
| 274 | * |
| 275 | *------------------------------------------------------------------------- |
| 276 | */ |
| 277 | |
| 278 | static int IsLeapYear(PRInt16 year) |
| 279 | { |
| 280 | if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) { |
| 281 | return 1; |
| 282 | } |
| 283 | return 0; |
| 284 | } |
| 285 | |
| 286 | /* |
| 287 | * 'secOffset' should be less than 86400 (i.e., a day). |
| 288 | * 'time' should point to a normalized PRExplodedTime. |
| 289 | */ |
| 290 | |
| 291 | static void |
| 292 | ApplySecOffset(PRExplodedTime *time, PRInt32 secOffset) |
| 293 | { |
| 294 | time->tm_sec += secOffset; |
| 295 | |
| 296 | /* Note that in this implementation we do not count leap seconds */ |
| 297 | if (time->tm_sec < 0 || time->tm_sec >= 60) { |
| 298 | time->tm_min += time->tm_sec / 60; |
| 299 | time->tm_sec %= 60; |
| 300 | if (time->tm_sec < 0) { |
| 301 | time->tm_sec += 60; |
| 302 | time->tm_min--; |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | if (time->tm_min < 0 || time->tm_min >= 60) { |
| 307 | time->tm_hour += time->tm_min / 60; |
| 308 | time->tm_min %= 60; |
| 309 | if (time->tm_min < 0) { |
| 310 | time->tm_min += 60; |
| 311 | time->tm_hour--; |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | if (time->tm_hour < 0) { |
| 316 | /* Decrement mday, yday, and wday */ |
| 317 | time->tm_hour += 24; |
| 318 | time->tm_mday--; |
| 319 | time->tm_yday--; |
| 320 | if (time->tm_mday < 1) { |
| 321 | time->tm_month--; |
| 322 | if (time->tm_month < 0) { |
| 323 | time->tm_month = 11; |
| 324 | time->tm_year--; |
| 325 | if (IsLeapYear(time->tm_year)) { |
| 326 | time->tm_yday = 365; |
| 327 | } |
| 328 | else { |
| 329 | time->tm_yday = 364; |
| 330 | } |
| 331 | } |
| 332 | time->tm_mday = nDays[IsLeapYear(time->tm_year)][time->tm_month]; |
| 333 | } |
| 334 | time->tm_wday--; |
| 335 | if (time->tm_wday < 0) { |
| 336 | time->tm_wday = 6; |
| 337 | } |
| 338 | } else if (time->tm_hour > 23) { |
| 339 | /* Increment mday, yday, and wday */ |
| 340 | time->tm_hour -= 24; |
| 341 | time->tm_mday++; |
| 342 | time->tm_yday++; |
| 343 | if (time->tm_mday > |
| 344 | nDays[IsLeapYear(time->tm_year)][time->tm_month]) { |
| 345 | time->tm_mday = 1; |
| 346 | time->tm_month++; |
| 347 | if (time->tm_month > 11) { |
| 348 | time->tm_month = 0; |
| 349 | time->tm_year++; |
| 350 | time->tm_yday = 0; |
| 351 | } |
| 352 | } |
| 353 | time->tm_wday++; |
| 354 | if (time->tm_wday > 6) { |
| 355 | time->tm_wday = 0; |
| 356 | } |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | PR_IMPLEMENT(void)__attribute__((visibility("default"))) void |
| 361 | PR_NormalizeTime(PRExplodedTime *time, PRTimeParamFn params) |
| 362 | { |
| 363 | int daysInMonth; |
| 364 | PRInt32 numDays; |
| 365 | |
| 366 | /* Get back to GMT */ |
| 367 | time->tm_sec -= time->tm_params.tp_gmt_offset |
| 368 | + time->tm_params.tp_dst_offset; |
| 369 | time->tm_params.tp_gmt_offset = 0; |
| 370 | time->tm_params.tp_dst_offset = 0; |
| 371 | |
| 372 | /* Now normalize GMT */ |
| 373 | |
| 374 | if (time->tm_usec < 0 || time->tm_usec >= 1000000) { |
| 375 | time->tm_sec += time->tm_usec / 1000000; |
| 376 | time->tm_usec %= 1000000; |
| 377 | if (time->tm_usec < 0) { |
| 378 | time->tm_usec += 1000000; |
| 379 | time->tm_sec--; |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | /* Note that we do not count leap seconds in this implementation */ |
| 384 | if (time->tm_sec < 0 || time->tm_sec >= 60) { |
| 385 | time->tm_min += time->tm_sec / 60; |
| 386 | time->tm_sec %= 60; |
| 387 | if (time->tm_sec < 0) { |
| 388 | time->tm_sec += 60; |
| 389 | time->tm_min--; |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | if (time->tm_min < 0 || time->tm_min >= 60) { |
| 394 | time->tm_hour += time->tm_min / 60; |
| 395 | time->tm_min %= 60; |
| 396 | if (time->tm_min < 0) { |
| 397 | time->tm_min += 60; |
| 398 | time->tm_hour--; |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | if (time->tm_hour < 0 || time->tm_hour >= 24) { |
| 403 | time->tm_mday += time->tm_hour / 24; |
| 404 | time->tm_hour %= 24; |
| 405 | if (time->tm_hour < 0) { |
| 406 | time->tm_hour += 24; |
| 407 | time->tm_mday--; |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | /* Normalize month and year before mday */ |
| 412 | if (time->tm_month < 0 || time->tm_month >= 12) { |
| 413 | time->tm_year += time->tm_month / 12; |
| 414 | time->tm_month %= 12; |
| 415 | if (time->tm_month < 0) { |
| 416 | time->tm_month += 12; |
| 417 | time->tm_year--; |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | /* Now that month and year are in proper range, normalize mday */ |
| 422 | |
| 423 | if (time->tm_mday < 1) { |
| 424 | /* mday too small */ |
| 425 | do { |
| 426 | /* the previous month */ |
| 427 | time->tm_month--; |
| 428 | if (time->tm_month < 0) { |
| 429 | time->tm_month = 11; |
| 430 | time->tm_year--; |
| 431 | } |
| 432 | time->tm_mday += nDays[IsLeapYear(time->tm_year)][time->tm_month]; |
| 433 | } while (time->tm_mday < 1); |
| 434 | } else { |
| 435 | daysInMonth = nDays[IsLeapYear(time->tm_year)][time->tm_month]; |
| 436 | while (time->tm_mday > daysInMonth) { |
| 437 | /* mday too large */ |
| 438 | time->tm_mday -= daysInMonth; |
| 439 | time->tm_month++; |
| 440 | if (time->tm_month > 11) { |
| 441 | time->tm_month = 0; |
| 442 | time->tm_year++; |
| 443 | } |
| 444 | daysInMonth = nDays[IsLeapYear(time->tm_year)][time->tm_month]; |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | /* Recompute yday and wday */ |
| 449 | time->tm_yday = time->tm_mday + |
| 450 | lastDayOfMonth[IsLeapYear(time->tm_year)][time->tm_month]; |
| 451 | |
| 452 | numDays = DAYS_BETWEEN_YEARS(1970, time->tm_year)(( ((time->tm_year)-1)*365 + ( ((time->tm_year)-1)/4 - ( (time->tm_year)-1)/100 + ((time->tm_year)-1)/400 ) ) - ( ((1970)-1)*365 + ( ((1970)-1)/4 - ((1970)-1)/100 + ((1970)-1 )/400 ) )) + time->tm_yday; |
| 453 | time->tm_wday = (numDays + 4) % 7; |
| 454 | if (time->tm_wday < 0) { |
| 455 | time->tm_wday += 7; |
| 456 | } |
| 457 | |
| 458 | /* Recompute time parameters */ |
| 459 | |
| 460 | time->tm_params = params(time); |
| 461 | |
| 462 | ApplySecOffset(time, time->tm_params.tp_gmt_offset |
| 463 | + time->tm_params.tp_dst_offset); |
| 464 | } |
| 465 | |
| 466 | |
| 467 | /* |
| 468 | *------------------------------------------------------------------------- |
| 469 | * |
| 470 | * PR_LocalTimeParameters -- |
| 471 | * |
| 472 | * returns the time parameters for the local time zone |
| 473 | * |
| 474 | * The following uses localtime() from the standard C library. |
| 475 | * (time.h) This is our fallback implementation. Unix, PC, and BeOS |
| 476 | * use this version. A platform may have its own machine-dependent |
| 477 | * implementation of this function. |
| 478 | * |
| 479 | *------------------------------------------------------------------------- |
| 480 | */ |
| 481 | |
| 482 | #if defined(HAVE_INT_LOCALTIME_R) |
| 483 | |
| 484 | /* |
| 485 | * In this case we could define the macro as |
| 486 | * #define MT_safe_localtime(timer, result) \ |
| 487 | * (localtime_r(timer, result) == 0 ? result : NULL) |
| 488 | * I chose to compare the return value of localtime_r with -1 so |
| 489 | * that I can catch the cases where localtime_r returns a pointer |
| 490 | * to struct tm. The macro definition above would not be able to |
| 491 | * detect such mistakes because it is legal to compare a pointer |
| 492 | * with 0. |
| 493 | */ |
| 494 | |
| 495 | #define MT_safe_localtimelocaltime_r(timer, result) \ |
| 496 | (localtime_r(timer, result) == -1 ? NULL((void*)0): result) |
| 497 | |
| 498 | #elif defined(HAVE_POINTER_LOCALTIME_R1) |
| 499 | |
| 500 | #define MT_safe_localtimelocaltime_r localtime_r |
| 501 | |
| 502 | #elif defined(_MSC_VER) |
| 503 | |
| 504 | /* Visual C++ has had localtime_s() since Visual C++ 2005. */ |
| 505 | |
| 506 | static struct tm *MT_safe_localtimelocaltime_r(const time_t *clock, struct tm *result) |
| 507 | { |
| 508 | errno_t err = localtime_s(result, clock); |
| 509 | if (err != 0) { |
| 510 | errno(*__errno_location ()) = err; |
| 511 | return NULL((void*)0); |
| 512 | } |
| 513 | return result; |
| 514 | } |
| 515 | |
| 516 | #else |
| 517 | |
| 518 | #define HAVE_LOCALTIME_MONITOR 1 /* We use 'monitor' to serialize our calls |
| 519 | * to localtime(). */ |
| 520 | static PRLock *monitor = NULL((void*)0); |
| 521 | |
| 522 | static struct tm *MT_safe_localtimelocaltime_r(const time_t *clock, struct tm *result) |
| 523 | { |
| 524 | struct tm *tmPtr; |
| 525 | int needLock = PR_Initialized(); /* We need to use a lock to protect |
| 526 | * against NSPR threads only when the |
| 527 | * NSPR thread system is activated. */ |
| 528 | |
| 529 | if (needLock) { |
| 530 | PR_Lock(monitor); |
| 531 | } |
| 532 | |
| 533 | /* |
| 534 | * Microsoft (all flavors) localtime() returns a NULL pointer if 'clock' |
| 535 | * represents a time before midnight January 1, 1970. In |
| 536 | * that case, we also return a NULL pointer and the struct tm |
| 537 | * object pointed to by 'result' is not modified. |
| 538 | * |
| 539 | * Watcom C/C++ 11.0 localtime() treats time_t as unsigned long |
| 540 | * hence, does not recognize negative values of clock as pre-1/1/70. |
| 541 | * We have to manually check (WIN16 only) for negative value of |
| 542 | * clock and return NULL. |
| 543 | * |
| 544 | * With negative values of clock, OS/2 returns the struct tm for |
| 545 | * clock plus ULONG_MAX. So we also have to check for the invalid |
| 546 | * structs returned for timezones west of Greenwich when clock == 0. |
| 547 | */ |
| 548 | |
| 549 | tmPtr = localtime(clock); |
| 550 | |
| 551 | #if defined(WIN16) || defined(XP_OS2) |
| 552 | if ( (PRInt32) *clock < 0 || |
| 553 | ( (PRInt32) *clock == 0 && tmPtr->tm_year != 70)) { |
| 554 | result = NULL((void*)0); |
| 555 | } |
| 556 | else { |
| 557 | *result = *tmPtr; |
| 558 | } |
| 559 | #else |
| 560 | if (tmPtr) { |
| 561 | *result = *tmPtr; |
| 562 | } else { |
| 563 | result = NULL((void*)0); |
| 564 | } |
| 565 | #endif /* WIN16 */ |
| 566 | |
| 567 | if (needLock) { |
| 568 | PR_Unlock(monitor); |
| 569 | } |
| 570 | |
| 571 | return result; |
| 572 | } |
| 573 | |
| 574 | #endif /* definition of MT_safe_localtime() */ |
| 575 | |
| 576 | void _PR_InitTime(void) |
| 577 | { |
| 578 | #ifdef HAVE_LOCALTIME_MONITOR |
| 579 | monitor = PR_NewLock(); |
| 580 | #endif |
| 581 | #ifdef WINCE |
| 582 | _MD_InitTime(); |
| 583 | #endif |
| 584 | } |
| 585 | |
| 586 | void _PR_CleanupTime(void) |
| 587 | { |
| 588 | #ifdef HAVE_LOCALTIME_MONITOR |
| 589 | if (monitor) { |
| 590 | PR_DestroyLock(monitor); |
| 591 | monitor = NULL((void*)0); |
| 592 | } |
| 593 | #endif |
| 594 | #ifdef WINCE |
| 595 | _MD_CleanupTime(); |
| 596 | #endif |
| 597 | } |
| 598 | |
| 599 | #if defined(XP_UNIX1) || defined(XP_PC) |
| 600 | |
| 601 | PR_IMPLEMENT(PRTimeParameters)__attribute__((visibility("default"))) PRTimeParameters |
| 602 | PR_LocalTimeParameters(const PRExplodedTime *gmt) |
| 603 | { |
| 604 | |
| 605 | PRTimeParameters retVal; |
| 606 | struct tm localTime; |
| 607 | struct tm *localTimeResult; |
| 608 | time_t secs; |
| 609 | PRTime secs64; |
| 610 | PRInt64 usecPerSec; |
| 611 | PRInt64 usecPerSec_1; |
| 612 | PRInt64 maxInt32; |
| 613 | PRInt64 minInt32; |
| 614 | PRInt32 dayOffset; |
| 615 | PRInt32 offset2Jan1970; |
| 616 | PRInt32 offsetNew; |
| 617 | int isdst2Jan1970; |
| 618 | |
| 619 | /* |
| 620 | * Calculate the GMT offset. First, figure out what is |
| 621 | * 00:00:00 Jan. 2, 1970 GMT (which is exactly a day, or 86400 |
| 622 | * seconds, since the epoch) in local time. Then we calculate |
| 623 | * the difference between local time and GMT in seconds: |
| 624 | * gmt_offset = local_time - GMT |
| 625 | * |
| 626 | * Caveat: the validity of this calculation depends on two |
| 627 | * assumptions: |
| 628 | * 1. Daylight saving time was not in effect on Jan. 2, 1970. |
| 629 | * 2. The time zone of the geographic location has not changed |
| 630 | * since Jan. 2, 1970. |
| 631 | */ |
| 632 | |
| 633 | secs = 86400L; |
| 634 | localTimeResult = MT_safe_localtimelocaltime_r(&secs, &localTime); |
| 635 | PR_ASSERT(localTimeResult != NULL)((localTimeResult != ((void*)0))?((void)0):PR_Assert("localTimeResult != NULL" ,"../../../../pr/src/misc/prtime.c",635)); |
| 636 | if (localTimeResult == NULL((void*)0)) { |
| 637 | /* Shouldn't happen. Use safe fallback for optimized builds. */ |
| 638 | return PR_GMTParameters(gmt); |
| 639 | } |
| 640 | |
| 641 | /* GMT is 00:00:00, 2nd of Jan. */ |
| 642 | |
| 643 | offset2Jan1970 = (PRInt32)localTime.tm_sec |
| 644 | + 60L * (PRInt32)localTime.tm_min |
| 645 | + 3600L * (PRInt32)localTime.tm_hour |
| 646 | + 86400L * (PRInt32)((PRInt32)localTime.tm_mday - 2L); |
| 647 | |
| 648 | isdst2Jan1970 = localTime.tm_isdst; |
| 649 | |
| 650 | /* |
| 651 | * Now compute DST offset. We calculate the overall offset |
| 652 | * of local time from GMT, similar to above. The overall |
| 653 | * offset has two components: gmt offset and dst offset. |
| 654 | * We subtract gmt offset from the overall offset to get |
| 655 | * the dst offset. |
| 656 | * overall_offset = local_time - GMT |
| 657 | * overall_offset = gmt_offset + dst_offset |
| 658 | * ==> dst_offset = local_time - GMT - gmt_offset |
| 659 | */ |
| 660 | |
| 661 | secs64 = PR_ImplodeTime(gmt); /* This is still in microseconds */ |
| 662 | LL_I2L(usecPerSec, PR_USEC_PER_SEC)((usecPerSec) = (PRInt64)(1000000L)); |
| 663 | LL_I2L(usecPerSec_1, PR_USEC_PER_SEC - 1)((usecPerSec_1) = (PRInt64)(1000000L - 1)); |
| 664 | /* Convert to seconds, truncating down (3.1 -> 3 and -3.1 -> -4) */ |
| 665 | if (LL_GE_ZERO(secs64)((secs64) >= 0)) { |
| 666 | LL_DIV(secs64, secs64, usecPerSec)((secs64) = (secs64) / (usecPerSec)); |
| 667 | } else { |
| 668 | LL_NEG(secs64, secs64)((secs64) = -(secs64)); |
| 669 | LL_ADD(secs64, secs64, usecPerSec_1)((secs64) = (secs64) + (usecPerSec_1)); |
| 670 | LL_DIV(secs64, secs64, usecPerSec)((secs64) = (secs64) / (usecPerSec)); |
| 671 | LL_NEG(secs64, secs64)((secs64) = -(secs64)); |
| 672 | } |
| 673 | LL_I2L(maxInt32, PR_INT32_MAX)((maxInt32) = (PRInt64)(2147483647)); |
| 674 | LL_I2L(minInt32, PR_INT32_MIN)((minInt32) = (PRInt64)((-2147483647 - 1))); |
| 675 | if (LL_CMP(secs64, >, maxInt32)((PRInt64)(secs64) > (PRInt64)(maxInt32)) || LL_CMP(secs64, <, minInt32)((PRInt64)(secs64) < (PRInt64)(minInt32))) { |
| 676 | /* secs64 is too large or too small for time_t (32-bit integer) */ |
| 677 | retVal.tp_gmt_offset = offset2Jan1970; |
| 678 | retVal.tp_dst_offset = 0; |
| 679 | return retVal; |
| 680 | } |
| 681 | LL_L2I(secs, secs64)((secs) = (PRInt32)(secs64)); |
| 682 | |
| 683 | /* |
| 684 | * On Windows, localtime() (and our MT_safe_localtime() too) |
| 685 | * returns a NULL pointer for time before midnight January 1, |
| 686 | * 1970 GMT. In that case, we just use the GMT offset for |
| 687 | * Jan 2, 1970 and assume that DST was not in effect. |
| 688 | */ |
| 689 | |
| 690 | if (MT_safe_localtimelocaltime_r(&secs, &localTime) == NULL((void*)0)) { |
| 691 | retVal.tp_gmt_offset = offset2Jan1970; |
| 692 | retVal.tp_dst_offset = 0; |
| 693 | return retVal; |
| 694 | } |
| 695 | |
| 696 | /* |
| 697 | * dayOffset is the offset between local time and GMT in |
| 698 | * the day component, which can only be -1, 0, or 1. We |
| 699 | * use the day of the week to compute dayOffset. |
| 700 | */ |
| 701 | |
| 702 | dayOffset = (PRInt32) localTime.tm_wday - gmt->tm_wday; |
| 703 | |
| 704 | /* |
| 705 | * Need to adjust for wrapping around of day of the week from |
| 706 | * 6 back to 0. |
| 707 | */ |
| 708 | |
| 709 | if (dayOffset == -6) { |
| 710 | /* Local time is Sunday (0) and GMT is Saturday (6) */ |
| 711 | dayOffset = 1; |
| 712 | } else if (dayOffset == 6) { |
| 713 | /* Local time is Saturday (6) and GMT is Sunday (0) */ |
| 714 | dayOffset = -1; |
| 715 | } |
| 716 | |
| 717 | offsetNew = (PRInt32)localTime.tm_sec - gmt->tm_sec |
| 718 | + 60L * ((PRInt32)localTime.tm_min - gmt->tm_min) |
| 719 | + 3600L * ((PRInt32)localTime.tm_hour - gmt->tm_hour) |
| 720 | + 86400L * (PRInt32)dayOffset; |
| 721 | |
| 722 | if (localTime.tm_isdst <= 0) { |
| 723 | /* DST is not in effect */ |
| 724 | retVal.tp_gmt_offset = offsetNew; |
| 725 | retVal.tp_dst_offset = 0; |
| 726 | } else { |
| 727 | /* DST is in effect */ |
| 728 | if (isdst2Jan1970 <=0) { |
| 729 | /* |
| 730 | * DST was not in effect back in 2 Jan. 1970. |
| 731 | * Use the offset back then as the GMT offset, |
| 732 | * assuming the time zone has not changed since then. |
| 733 | */ |
| 734 | retVal.tp_gmt_offset = offset2Jan1970; |
| 735 | retVal.tp_dst_offset = offsetNew - offset2Jan1970; |
| 736 | } else { |
| 737 | /* |
| 738 | * DST was also in effect back in 2 Jan. 1970. |
| 739 | * Then our clever trick (or rather, ugly hack) fails. |
| 740 | * We will just assume DST offset is an hour. |
| 741 | */ |
| 742 | retVal.tp_gmt_offset = offsetNew - 3600; |
| 743 | retVal.tp_dst_offset = 3600; |
| 744 | } |
| 745 | } |
| 746 | |
| 747 | return retVal; |
| 748 | } |
| 749 | |
| 750 | #endif /* defined(XP_UNIX) || defined(XP_PC) */ |
| 751 | |
| 752 | /* |
| 753 | *------------------------------------------------------------------------ |
| 754 | * |
| 755 | * PR_USPacificTimeParameters -- |
| 756 | * |
| 757 | * The time parameters function for the US Pacific Time Zone. |
| 758 | * |
| 759 | *------------------------------------------------------------------------ |
| 760 | */ |
| 761 | |
| 762 | /* |
| 763 | * Returns the mday of the first sunday of the month, where |
| 764 | * mday and wday are for a given day in the month. |
| 765 | * mdays start with 1 (e.g. 1..31). |
| 766 | * wdays start with 0 and are in the range 0..6. 0 = Sunday. |
| 767 | */ |
| 768 | #define firstSunday(mday, wday)(((mday - wday + 7 - 1) % 7) + 1) (((mday - wday + 7 - 1) % 7) + 1) |
| 769 | |
| 770 | /* |
| 771 | * Returns the mday for the N'th Sunday of the month, where |
| 772 | * mday and wday are for a given day in the month. |
| 773 | * mdays start with 1 (e.g. 1..31). |
| 774 | * wdays start with 0 and are in the range 0..6. 0 = Sunday. |
| 775 | * N has the following values: 0 = first, 1 = second (etc), -1 = last. |
| 776 | * ndays is the number of days in that month, the same value as the |
| 777 | * mday of the last day of the month. |
| 778 | */ |
| 779 | static PRInt32 |
| 780 | NthSunday(PRInt32 mday, PRInt32 wday, PRInt32 N, PRInt32 ndays) |
| 781 | { |
| 782 | PRInt32 firstSun = firstSunday(mday, wday)(((mday - wday + 7 - 1) % 7) + 1); |
| 783 | |
| 784 | if (N < 0) { |
| 785 | N = (ndays - firstSun) / 7; |
| 786 | } |
| 787 | return firstSun + (7 * N); |
| 788 | } |
| 789 | |
| 790 | typedef struct DSTParams { |
| 791 | PRInt8 dst_start_month; /* 0 = January */ |
| 792 | PRInt8 dst_start_Nth_Sunday; /* N as defined above */ |
| 793 | PRInt8 dst_start_month_ndays; /* ndays as defined above */ |
| 794 | PRInt8 dst_end_month; /* 0 = January */ |
| 795 | PRInt8 dst_end_Nth_Sunday; /* N as defined above */ |
| 796 | PRInt8 dst_end_month_ndays; /* ndays as defined above */ |
| 797 | } DSTParams; |
| 798 | |
| 799 | static const DSTParams dstParams[2] = { |
| 800 | /* year < 2007: First April Sunday - Last October Sunday */ |
| 801 | { 3, 0, 30, 9, -1, 31 }, |
| 802 | /* year >= 2007: Second March Sunday - First November Sunday */ |
| 803 | { 2, 1, 31, 10, 0, 30 } |
| 804 | }; |
| 805 | |
| 806 | PR_IMPLEMENT(PRTimeParameters)__attribute__((visibility("default"))) PRTimeParameters |
| 807 | PR_USPacificTimeParameters(const PRExplodedTime *gmt) |
| 808 | { |
| 809 | const DSTParams *dst; |
| 810 | PRTimeParameters retVal; |
| 811 | PRExplodedTime st; |
| 812 | |
| 813 | /* |
| 814 | * Based on geographic location and GMT, figure out offset of |
| 815 | * standard time from GMT. In this example implementation, we |
| 816 | * assume the local time zone is US Pacific Time. |
| 817 | */ |
| 818 | |
| 819 | retVal.tp_gmt_offset = -8L * 3600L; |
| 820 | |
| 821 | /* |
| 822 | * Make a copy of GMT. Note that the tm_params field of this copy |
| 823 | * is ignored. |
| 824 | */ |
| 825 | |
| 826 | st.tm_usec = gmt->tm_usec; |
| 827 | st.tm_sec = gmt->tm_sec; |
| 828 | st.tm_min = gmt->tm_min; |
| 829 | st.tm_hour = gmt->tm_hour; |
| 830 | st.tm_mday = gmt->tm_mday; |
| 831 | st.tm_month = gmt->tm_month; |
| 832 | st.tm_year = gmt->tm_year; |
| 833 | st.tm_wday = gmt->tm_wday; |
| 834 | st.tm_yday = gmt->tm_yday; |
| 835 | |
| 836 | /* Apply the offset to GMT to obtain the local standard time */ |
| 837 | ApplySecOffset(&st, retVal.tp_gmt_offset); |
| 838 | |
| 839 | if (st.tm_year < 2007) { /* first April Sunday - Last October Sunday */ |
| 840 | dst = &dstParams[0]; |
| 841 | } else { /* Second March Sunday - First November Sunday */ |
| 842 | dst = &dstParams[1]; |
| 843 | } |
| 844 | |
| 845 | /* |
| 846 | * Apply the rules on standard time or GMT to obtain daylight saving |
| 847 | * time offset. In this implementation, we use the US DST rule. |
| 848 | */ |
| 849 | if (st.tm_month < dst->dst_start_month) { |
| 850 | retVal.tp_dst_offset = 0L; |
| 851 | } else if (st.tm_month == dst->dst_start_month) { |
| 852 | int NthSun = NthSunday(st.tm_mday, st.tm_wday, |
| 853 | dst->dst_start_Nth_Sunday, |
| 854 | dst->dst_start_month_ndays); |
| 855 | if (st.tm_mday < NthSun) { /* Before starting Sunday */ |
| 856 | retVal.tp_dst_offset = 0L; |
| 857 | } else if (st.tm_mday == NthSun) { /* Starting Sunday */ |
| 858 | /* 01:59:59 PST -> 03:00:00 PDT */ |
| 859 | if (st.tm_hour < 2) { |
| 860 | retVal.tp_dst_offset = 0L; |
| 861 | } else { |
| 862 | retVal.tp_dst_offset = 3600L; |
| 863 | } |
| 864 | } else { /* After starting Sunday */ |
| 865 | retVal.tp_dst_offset = 3600L; |
| 866 | } |
| 867 | } else if (st.tm_month < dst->dst_end_month) { |
| 868 | retVal.tp_dst_offset = 3600L; |
| 869 | } else if (st.tm_month == dst->dst_end_month) { |
| 870 | int NthSun = NthSunday(st.tm_mday, st.tm_wday, |
| 871 | dst->dst_end_Nth_Sunday, |
| 872 | dst->dst_end_month_ndays); |
| 873 | if (st.tm_mday < NthSun) { /* Before ending Sunday */ |
| 874 | retVal.tp_dst_offset = 3600L; |
| 875 | } else if (st.tm_mday == NthSun) { /* Ending Sunday */ |
| 876 | /* 01:59:59 PDT -> 01:00:00 PST */ |
| 877 | if (st.tm_hour < 1) { |
| 878 | retVal.tp_dst_offset = 3600L; |
| 879 | } else { |
| 880 | retVal.tp_dst_offset = 0L; |
| 881 | } |
| 882 | } else { /* After ending Sunday */ |
| 883 | retVal.tp_dst_offset = 0L; |
| 884 | } |
| 885 | } else { |
| 886 | retVal.tp_dst_offset = 0L; |
| 887 | } |
| 888 | return retVal; |
| 889 | } |
| 890 | |
| 891 | /* |
| 892 | *------------------------------------------------------------------------ |
| 893 | * |
| 894 | * PR_GMTParameters -- |
| 895 | * |
| 896 | * Returns the PRTimeParameters for Greenwich Mean Time. |
| 897 | * Trivially, both the tp_gmt_offset and tp_dst_offset fields are 0. |
| 898 | * |
| 899 | *------------------------------------------------------------------------ |
| 900 | */ |
| 901 | |
| 902 | PR_IMPLEMENT(PRTimeParameters)__attribute__((visibility("default"))) PRTimeParameters |
| 903 | PR_GMTParameters(const PRExplodedTime *gmt) |
| 904 | { |
| 905 | PRTimeParameters retVal = { 0, 0 }; |
| 906 | return retVal; |
| 907 | } |
| 908 | |
| 909 | /* |
| 910 | * The following code implements PR_ParseTimeString(). It is based on |
| 911 | * ns/lib/xp/xp_time.c, revision 1.25, by Jamie Zawinski <jwz@netscape.com>. |
| 912 | */ |
| 913 | |
| 914 | /* |
| 915 | * We only recognize the abbreviations of a small subset of time zones |
| 916 | * in North America, Europe, and Japan. |
| 917 | * |
| 918 | * PST/PDT: Pacific Standard/Daylight Time |
| 919 | * MST/MDT: Mountain Standard/Daylight Time |
| 920 | * CST/CDT: Central Standard/Daylight Time |
| 921 | * EST/EDT: Eastern Standard/Daylight Time |
| 922 | * AST: Atlantic Standard Time |
| 923 | * NST: Newfoundland Standard Time |
| 924 | * GMT: Greenwich Mean Time |
| 925 | * BST: British Summer Time |
| 926 | * MET: Middle Europe Time |
| 927 | * EET: Eastern Europe Time |
| 928 | * JST: Japan Standard Time |
| 929 | */ |
| 930 | |
| 931 | typedef enum |
| 932 | { |
| 933 | TT_UNKNOWN, |
| 934 | |
| 935 | TT_SUN, TT_MON, TT_TUE, TT_WED, TT_THU, TT_FRI, TT_SAT, |
| 936 | |
| 937 | TT_JAN, TT_FEB, TT_MAR, TT_APR, TT_MAY, TT_JUN, |
| 938 | TT_JUL, TT_AUG, TT_SEP, TT_OCT, TT_NOV, TT_DEC, |
| 939 | |
| 940 | TT_PST, TT_PDT, TT_MST, TT_MDT, TT_CST, TT_CDT, TT_EST, TT_EDT, |
| 941 | TT_AST, TT_NST, TT_GMT, TT_BST, TT_MET, TT_EET, TT_JST |
| 942 | } TIME_TOKEN; |
| 943 | |
| 944 | /* |
| 945 | * This parses a time/date string into a PRTime |
| 946 | * (microseconds after "1-Jan-1970 00:00:00 GMT"). |
| 947 | * It returns PR_SUCCESS on success, and PR_FAILURE |
| 948 | * if the time/date string can't be parsed. |
| 949 | * |
| 950 | * Many formats are handled, including: |
| 951 | * |
| 952 | * 14 Apr 89 03:20:12 |
| 953 | * 14 Apr 89 03:20 GMT |
| 954 | * Fri, 17 Mar 89 4:01:33 |
| 955 | * Fri, 17 Mar 89 4:01 GMT |
| 956 | * Mon Jan 16 16:12 PDT 1989 |
| 957 | * Mon Jan 16 16:12 +0130 1989 |
| 958 | * 6 May 1992 16:41-JST (Wednesday) |
| 959 | * 22-AUG-1993 10:59:12.82 |
| 960 | * 22-AUG-1993 10:59pm |
| 961 | * 22-AUG-1993 12:59am |
| 962 | * 22-AUG-1993 12:59 PM |
| 963 | * Friday, August 04, 1995 3:54 PM |
| 964 | * 06/21/95 04:24:34 PM |
| 965 | * 20/06/95 21:07 |
| 966 | * 95-06-08 19:32:48 EDT |
| 967 | * |
| 968 | * If the input string doesn't contain a description of the timezone, |
| 969 | * we consult the `default_to_gmt' to decide whether the string should |
| 970 | * be interpreted relative to the local time zone (PR_FALSE) or GMT (PR_TRUE). |
| 971 | * The correct value for this argument depends on what standard specified |
| 972 | * the time string which you are parsing. |
| 973 | */ |
| 974 | |
| 975 | PR_IMPLEMENT(PRStatus)__attribute__((visibility("default"))) PRStatus |
| 976 | PR_ParseTimeStringToExplodedTime( |
| 977 | const char *string, |
| 978 | PRBool default_to_gmt, |
| 979 | PRExplodedTime *result) |
| 980 | { |
| 981 | TIME_TOKEN dotw = TT_UNKNOWN; |
| 982 | TIME_TOKEN month = TT_UNKNOWN; |
| 983 | TIME_TOKEN zone = TT_UNKNOWN; |
| 984 | int zone_offset = -1; |
| 985 | int dst_offset = 0; |
| 986 | int date = -1; |
| 987 | PRInt32 year = -1; |
| 988 | int hour = -1; |
| 989 | int min = -1; |
| 990 | int sec = -1; |
| 991 | struct tm *localTimeResult; |
| 992 | |
| 993 | const char *rest = string; |
| 994 | |
| 995 | int iterations = 0; |
| 996 | |
| 997 | PR_ASSERT(string && result)((string && result)?((void)0):PR_Assert("string && result" ,"../../../../pr/src/misc/prtime.c",997)); |
| 998 | if (!string || !result) { |
| 999 | return PR_FAILURE; |
| 1000 | } |
| 1001 | |
| 1002 | while (*rest) |
| 1003 | { |
| 1004 | |
| 1005 | if (iterations++ > 1000) |
| 1006 | { |
| 1007 | return PR_FAILURE; |
| 1008 | } |
| 1009 | |
| 1010 | switch (*rest) |
| 1011 | { |
| 1012 | case 'a': case 'A': |
| 1013 | if (month == TT_UNKNOWN && |
| 1014 | (rest[1] == 'p' || rest[1] == 'P') && |
| 1015 | (rest[2] == 'r' || rest[2] == 'R')) { |
| 1016 | month = TT_APR; |
| 1017 | } |
| 1018 | else if (zone == TT_UNKNOWN && |
| 1019 | (rest[1] == 's' || rest[1] == 'S') && |
| 1020 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1021 | zone = TT_AST; |
| 1022 | } |
| 1023 | else if (month == TT_UNKNOWN && |
| 1024 | (rest[1] == 'u' || rest[1] == 'U') && |
| 1025 | (rest[2] == 'g' || rest[2] == 'G')) { |
| 1026 | month = TT_AUG; |
| 1027 | } |
| 1028 | break; |
| 1029 | case 'b': case 'B': |
| 1030 | if (zone == TT_UNKNOWN && |
| 1031 | (rest[1] == 's' || rest[1] == 'S') && |
| 1032 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1033 | zone = TT_BST; |
| 1034 | } |
| 1035 | break; |
| 1036 | case 'c': case 'C': |
| 1037 | if (zone == TT_UNKNOWN && |
| 1038 | (rest[1] == 'd' || rest[1] == 'D') && |
| 1039 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1040 | zone = TT_CDT; |
| 1041 | } |
| 1042 | else if (zone == TT_UNKNOWN && |
| 1043 | (rest[1] == 's' || rest[1] == 'S') && |
| 1044 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1045 | zone = TT_CST; |
| 1046 | } |
| 1047 | break; |
| 1048 | case 'd': case 'D': |
| 1049 | if (month == TT_UNKNOWN && |
| 1050 | (rest[1] == 'e' || rest[1] == 'E') && |
| 1051 | (rest[2] == 'c' || rest[2] == 'C')) { |
| 1052 | month = TT_DEC; |
| 1053 | } |
| 1054 | break; |
| 1055 | case 'e': case 'E': |
| 1056 | if (zone == TT_UNKNOWN && |
| 1057 | (rest[1] == 'd' || rest[1] == 'D') && |
| 1058 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1059 | zone = TT_EDT; |
| 1060 | } |
| 1061 | else if (zone == TT_UNKNOWN && |
| 1062 | (rest[1] == 'e' || rest[1] == 'E') && |
| 1063 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1064 | zone = TT_EET; |
| 1065 | } |
| 1066 | else if (zone == TT_UNKNOWN && |
| 1067 | (rest[1] == 's' || rest[1] == 'S') && |
| 1068 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1069 | zone = TT_EST; |
| 1070 | } |
| 1071 | break; |
| 1072 | case 'f': case 'F': |
| 1073 | if (month == TT_UNKNOWN && |
| 1074 | (rest[1] == 'e' || rest[1] == 'E') && |
| 1075 | (rest[2] == 'b' || rest[2] == 'B')) { |
| 1076 | month = TT_FEB; |
| 1077 | } |
| 1078 | else if (dotw == TT_UNKNOWN && |
| 1079 | (rest[1] == 'r' || rest[1] == 'R') && |
| 1080 | (rest[2] == 'i' || rest[2] == 'I')) { |
| 1081 | dotw = TT_FRI; |
| 1082 | } |
| 1083 | break; |
| 1084 | case 'g': case 'G': |
| 1085 | if (zone == TT_UNKNOWN && |
| 1086 | (rest[1] == 'm' || rest[1] == 'M') && |
| 1087 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1088 | zone = TT_GMT; |
| 1089 | } |
| 1090 | break; |
| 1091 | case 'j': case 'J': |
| 1092 | if (month == TT_UNKNOWN && |
| 1093 | (rest[1] == 'a' || rest[1] == 'A') && |
| 1094 | (rest[2] == 'n' || rest[2] == 'N')) { |
| 1095 | month = TT_JAN; |
| 1096 | } |
| 1097 | else if (zone == TT_UNKNOWN && |
| 1098 | (rest[1] == 's' || rest[1] == 'S') && |
| 1099 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1100 | zone = TT_JST; |
| 1101 | } |
| 1102 | else if (month == TT_UNKNOWN && |
| 1103 | (rest[1] == 'u' || rest[1] == 'U') && |
| 1104 | (rest[2] == 'l' || rest[2] == 'L')) { |
| 1105 | month = TT_JUL; |
| 1106 | } |
| 1107 | else if (month == TT_UNKNOWN && |
| 1108 | (rest[1] == 'u' || rest[1] == 'U') && |
| 1109 | (rest[2] == 'n' || rest[2] == 'N')) { |
| 1110 | month = TT_JUN; |
| 1111 | } |
| 1112 | break; |
| 1113 | case 'm': case 'M': |
| 1114 | if (month == TT_UNKNOWN && |
| 1115 | (rest[1] == 'a' || rest[1] == 'A') && |
| 1116 | (rest[2] == 'r' || rest[2] == 'R')) { |
| 1117 | month = TT_MAR; |
| 1118 | } |
| 1119 | else if (month == TT_UNKNOWN && |
| 1120 | (rest[1] == 'a' || rest[1] == 'A') && |
| 1121 | (rest[2] == 'y' || rest[2] == 'Y')) { |
| 1122 | month = TT_MAY; |
| 1123 | } |
| 1124 | else if (zone == TT_UNKNOWN && |
| 1125 | (rest[1] == 'd' || rest[1] == 'D') && |
| 1126 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1127 | zone = TT_MDT; |
| 1128 | } |
| 1129 | else if (zone == TT_UNKNOWN && |
| 1130 | (rest[1] == 'e' || rest[1] == 'E') && |
| 1131 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1132 | zone = TT_MET; |
| 1133 | } |
| 1134 | else if (dotw == TT_UNKNOWN && |
| 1135 | (rest[1] == 'o' || rest[1] == 'O') && |
| 1136 | (rest[2] == 'n' || rest[2] == 'N')) { |
| 1137 | dotw = TT_MON; |
| 1138 | } |
| 1139 | else if (zone == TT_UNKNOWN && |
| 1140 | (rest[1] == 's' || rest[1] == 'S') && |
| 1141 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1142 | zone = TT_MST; |
| 1143 | } |
| 1144 | break; |
| 1145 | case 'n': case 'N': |
| 1146 | if (month == TT_UNKNOWN && |
| 1147 | (rest[1] == 'o' || rest[1] == 'O') && |
| 1148 | (rest[2] == 'v' || rest[2] == 'V')) { |
| 1149 | month = TT_NOV; |
| 1150 | } |
| 1151 | else if (zone == TT_UNKNOWN && |
| 1152 | (rest[1] == 's' || rest[1] == 'S') && |
| 1153 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1154 | zone = TT_NST; |
| 1155 | } |
| 1156 | break; |
| 1157 | case 'o': case 'O': |
| 1158 | if (month == TT_UNKNOWN && |
| 1159 | (rest[1] == 'c' || rest[1] == 'C') && |
| 1160 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1161 | month = TT_OCT; |
| 1162 | } |
| 1163 | break; |
| 1164 | case 'p': case 'P': |
| 1165 | if (zone == TT_UNKNOWN && |
| 1166 | (rest[1] == 'd' || rest[1] == 'D') && |
| 1167 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1168 | zone = TT_PDT; |
| 1169 | } |
| 1170 | else if (zone == TT_UNKNOWN && |
| 1171 | (rest[1] == 's' || rest[1] == 'S') && |
| 1172 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1173 | zone = TT_PST; |
| 1174 | } |
| 1175 | break; |
| 1176 | case 's': case 'S': |
| 1177 | if (dotw == TT_UNKNOWN && |
| 1178 | (rest[1] == 'a' || rest[1] == 'A') && |
| 1179 | (rest[2] == 't' || rest[2] == 'T')) { |
| 1180 | dotw = TT_SAT; |
| 1181 | } |
| 1182 | else if (month == TT_UNKNOWN && |
| 1183 | (rest[1] == 'e' || rest[1] == 'E') && |
| 1184 | (rest[2] == 'p' || rest[2] == 'P')) { |
| 1185 | month = TT_SEP; |
| 1186 | } |
| 1187 | else if (dotw == TT_UNKNOWN && |
| 1188 | (rest[1] == 'u' || rest[1] == 'U') && |
| 1189 | (rest[2] == 'n' || rest[2] == 'N')) { |
| 1190 | dotw = TT_SUN; |
| 1191 | } |
| 1192 | break; |
| 1193 | case 't': case 'T': |
| 1194 | if (dotw == TT_UNKNOWN && |
| 1195 | (rest[1] == 'h' || rest[1] == 'H') && |
| 1196 | (rest[2] == 'u' || rest[2] == 'U')) { |
| 1197 | dotw = TT_THU; |
| 1198 | } |
| 1199 | else if (dotw == TT_UNKNOWN && |
| 1200 | (rest[1] == 'u' || rest[1] == 'U') && |
| 1201 | (rest[2] == 'e' || rest[2] == 'E')) { |
| 1202 | dotw = TT_TUE; |
| 1203 | } |
| 1204 | break; |
| 1205 | case 'u': case 'U': |
| 1206 | if (zone == TT_UNKNOWN && |
| 1207 | (rest[1] == 't' || rest[1] == 'T') && |
| 1208 | !(rest[2] >= 'A' && rest[2] <= 'Z') && |
| 1209 | !(rest[2] >= 'a' && rest[2] <= 'z')) |
| 1210 | /* UT is the same as GMT but UTx is not. */ |
| 1211 | { |
| 1212 | zone = TT_GMT; |
| 1213 | } |
| 1214 | break; |
| 1215 | case 'w': case 'W': |
| 1216 | if (dotw == TT_UNKNOWN && |
| 1217 | (rest[1] == 'e' || rest[1] == 'E') && |
| 1218 | (rest[2] == 'd' || rest[2] == 'D')) { |
| 1219 | dotw = TT_WED; |
| 1220 | } |
| 1221 | break; |
| 1222 | |
| 1223 | case '+': case '-': |
| 1224 | { |
| 1225 | const char *end; |
| 1226 | int sign; |
| 1227 | if (zone_offset != -1) |
| 1228 | { |
| 1229 | /* already got one... */ |
| 1230 | rest++; |
| 1231 | break; |
| 1232 | } |
| 1233 | if (zone != TT_UNKNOWN && zone != TT_GMT) |
| 1234 | { |
| 1235 | /* GMT+0300 is legal, but PST+0300 is not. */ |
| 1236 | rest++; |
| 1237 | break; |
| 1238 | } |
| 1239 | |
| 1240 | sign = ((*rest == '+') ? 1 : -1); |
| 1241 | rest++; /* move over sign */ |
| 1242 | end = rest; |
| 1243 | while (*end >= '0' && *end <= '9') { |
| 1244 | end++; |
| 1245 | } |
| 1246 | if (rest == end) { /* no digits here */ |
| 1247 | break; |
| 1248 | } |
| 1249 | |
| 1250 | if ((end - rest) == 4) |
| 1251 | /* offset in HHMM */ |
| 1252 | zone_offset = (((((rest[0]-'0')*10) + (rest[1]-'0')) * 60) + |
| 1253 | (((rest[2]-'0')*10) + (rest[3]-'0'))); |
| 1254 | else if ((end - rest) == 2) |
| 1255 | /* offset in hours */ |
| 1256 | { |
| 1257 | zone_offset = (((rest[0]-'0')*10) + (rest[1]-'0')) * 60; |
| 1258 | } |
| 1259 | else if ((end - rest) == 1) |
| 1260 | /* offset in hours */ |
| 1261 | { |
| 1262 | zone_offset = (rest[0]-'0') * 60; |
| 1263 | } |
| 1264 | else |
| 1265 | /* 3 or >4 */ |
| 1266 | { |
| 1267 | break; |
| 1268 | } |
| 1269 | |
| 1270 | zone_offset *= sign; |
| 1271 | zone = TT_GMT; |
| 1272 | break; |
| 1273 | } |
| 1274 | |
| 1275 | case '0': case '1': case '2': case '3': case '4': |
| 1276 | case '5': case '6': case '7': case '8': case '9': |
| 1277 | { |
| 1278 | int tmp_hour = -1; |
| 1279 | int tmp_min = -1; |
| 1280 | int tmp_sec = -1; |
| 1281 | const char *end = rest + 1; |
| 1282 | while (*end >= '0' && *end <= '9') { |
| 1283 | end++; |
| 1284 | } |
| 1285 | |
| 1286 | /* end is now the first character after a range of digits. */ |
| 1287 | |
| 1288 | if (*end == ':') |
| 1289 | { |
| 1290 | if (hour >= 0 && min >= 0) { /* already got it */ |
| 1291 | break; |
| 1292 | } |
| 1293 | |
| 1294 | /* We have seen "[0-9]+:", so this is probably HH:MM[:SS] */ |
| 1295 | if ((end - rest) > 2) |
| 1296 | /* it is [0-9][0-9][0-9]+: */ |
| 1297 | { |
| 1298 | break; |
| 1299 | } |
| 1300 | if ((end - rest) == 2) |
| 1301 | tmp_hour = ((rest[0]-'0')*10 + |
| 1302 | (rest[1]-'0')); |
| 1303 | else { |
| 1304 | tmp_hour = (rest[0]-'0'); |
| 1305 | } |
| 1306 | |
| 1307 | /* move over the colon, and parse minutes */ |
| 1308 | |
| 1309 | rest = ++end; |
| 1310 | while (*end >= '0' && *end <= '9') { |
| 1311 | end++; |
| 1312 | } |
| 1313 | |
| 1314 | if (end == rest) |
| 1315 | /* no digits after first colon? */ |
| 1316 | { |
| 1317 | break; |
| 1318 | } |
| 1319 | if ((end - rest) > 2) |
| 1320 | /* it is [0-9][0-9][0-9]+: */ |
| 1321 | { |
| 1322 | break; |
| 1323 | } |
| 1324 | if ((end - rest) == 2) |
| 1325 | tmp_min = ((rest[0]-'0')*10 + |
| 1326 | (rest[1]-'0')); |
| 1327 | else { |
| 1328 | tmp_min = (rest[0]-'0'); |
| 1329 | } |
| 1330 | |
| 1331 | /* now go for seconds */ |
| 1332 | rest = end; |
| 1333 | if (*rest == ':') { |
| 1334 | rest++; |
| 1335 | } |
| 1336 | end = rest; |
| 1337 | while (*end >= '0' && *end <= '9') { |
| 1338 | end++; |
| 1339 | } |
| 1340 | |
| 1341 | if (end == rest) |
| 1342 | /* no digits after second colon - that's ok. */ |
| 1343 | ; |
| 1344 | else if ((end - rest) > 2) |
| 1345 | /* it is [0-9][0-9][0-9]+: */ |
| 1346 | { |
| 1347 | break; |
| 1348 | } |
| 1349 | if ((end - rest) == 2) |
| 1350 | tmp_sec = ((rest[0]-'0')*10 + |
| 1351 | (rest[1]-'0')); |
| 1352 | else { |
| 1353 | tmp_sec = (rest[0]-'0'); |
| 1354 | } |
| 1355 | |
| 1356 | /* If we made it here, we've parsed hour and min, |
| 1357 | and possibly sec, so it worked as a unit. */ |
| 1358 | |
| 1359 | /* skip over whitespace and see if there's an AM or PM |
| 1360 | directly following the time. |
| 1361 | */ |
| 1362 | if (tmp_hour <= 12) |
| 1363 | { |
| 1364 | const char *s = end; |
| 1365 | while (*s && (*s == ' ' || *s == '\t')) { |
| 1366 | s++; |
| 1367 | } |
| 1368 | if ((s[0] == 'p' || s[0] == 'P') && |
| 1369 | (s[1] == 'm' || s[1] == 'M')) |
| 1370 | /* 10:05pm == 22:05, and 12:05pm == 12:05 */ |
| 1371 | { |
| 1372 | tmp_hour = (tmp_hour == 12 ? 12 : tmp_hour + 12); |
| 1373 | } |
| 1374 | else if (tmp_hour == 12 && |
| 1375 | (s[0] == 'a' || s[0] == 'A') && |
| 1376 | (s[1] == 'm' || s[1] == 'M')) |
| 1377 | /* 12:05am == 00:05 */ |
| 1378 | { |
| 1379 | tmp_hour = 0; |
| 1380 | } |
| 1381 | } |
| 1382 | |
| 1383 | hour = tmp_hour; |
| 1384 | min = tmp_min; |
| 1385 | sec = tmp_sec; |
| 1386 | rest = end; |
| 1387 | break; |
| 1388 | } |
| 1389 | if ((*end == '/' || *end == '-') && |
| 1390 | end[1] >= '0' && end[1] <= '9') |
| 1391 | { |
| 1392 | /* Perhaps this is 6/16/95, 16/6/95, 6-16-95, or 16-6-95 |
| 1393 | or even 95-06-05... |
| 1394 | #### But it doesn't handle 1995-06-22. |
| 1395 | */ |
| 1396 | int n1, n2, n3; |
| 1397 | const char *s; |
| 1398 | |
| 1399 | if (month != TT_UNKNOWN) |
| 1400 | /* if we saw a month name, this can't be. */ |
| 1401 | { |
| 1402 | break; |
| 1403 | } |
| 1404 | |
| 1405 | s = rest; |
| 1406 | |
| 1407 | n1 = (*s++ - '0'); /* first 1 or 2 digits */ |
| 1408 | if (*s >= '0' && *s <= '9') { |
| 1409 | n1 = n1*10 + (*s++ - '0'); |
| 1410 | } |
| 1411 | |
| 1412 | if (*s != '/' && *s != '-') { /* slash */ |
| 1413 | break; |
| 1414 | } |
| 1415 | s++; |
| 1416 | |
| 1417 | if (*s < '0' || *s > '9') { /* second 1 or 2 digits */ |
| 1418 | break; |
| 1419 | } |
| 1420 | n2 = (*s++ - '0'); |
| 1421 | if (*s >= '0' && *s <= '9') { |
| 1422 | n2 = n2*10 + (*s++ - '0'); |
| 1423 | } |
| 1424 | |
| 1425 | if (*s != '/' && *s != '-') { /* slash */ |
| 1426 | break; |
| 1427 | } |
| 1428 | s++; |
| 1429 | |
| 1430 | if (*s < '0' || *s > '9') { /* third 1, 2, 4, or 5 digits */ |
| 1431 | break; |
| 1432 | } |
| 1433 | n3 = (*s++ - '0'); |
| 1434 | if (*s >= '0' && *s <= '9') { |
| 1435 | n3 = n3*10 + (*s++ - '0'); |
| 1436 | } |
| 1437 | |
| 1438 | if (*s >= '0' && *s <= '9') /* optional digits 3, 4, and 5 */ |
| 1439 | { |
| 1440 | n3 = n3*10 + (*s++ - '0'); |
| 1441 | if (*s < '0' || *s > '9') { |
| 1442 | break; |
| 1443 | } |
| 1444 | n3 = n3*10 + (*s++ - '0'); |
| 1445 | if (*s >= '0' && *s <= '9') { |
| 1446 | n3 = n3*10 + (*s++ - '0'); |
| 1447 | } |
| 1448 | } |
| 1449 | |
| 1450 | if ((*s >= '0' && *s <= '9') || /* followed by non-alphanum */ |
| 1451 | (*s >= 'A' && *s <= 'Z') || |
| 1452 | (*s >= 'a' && *s <= 'z')) { |
| 1453 | break; |
| 1454 | } |
| 1455 | |
| 1456 | /* Ok, we parsed three 1-2 digit numbers, with / or - |
| 1457 | between them. Now decide what the hell they are |
| 1458 | (DD/MM/YY or MM/DD/YY or YY/MM/DD.) |
| 1459 | */ |
| 1460 | |
| 1461 | if (n1 > 31 || n1 == 0) /* must be YY/MM/DD */ |
| 1462 | { |
| 1463 | if (n2 > 12) { |
| 1464 | break; |
| 1465 | } |
| 1466 | if (n3 > 31) { |
| 1467 | break; |
| 1468 | } |
| 1469 | year = n1; |
| 1470 | if (year < 70) { |
| 1471 | year += 2000; |
| 1472 | } |
| 1473 | else if (year < 100) { |
| 1474 | year += 1900; |
| 1475 | } |
| 1476 | month = (TIME_TOKEN)(n2 + ((int)TT_JAN) - 1); |
| 1477 | date = n3; |
| 1478 | rest = s; |
| 1479 | break; |
| 1480 | } |
| 1481 | |
| 1482 | if (n1 > 12 && n2 > 12) /* illegal */ |
| 1483 | { |
| 1484 | rest = s; |
| 1485 | break; |
| 1486 | } |
| 1487 | |
| 1488 | if (n3 < 70) { |
| 1489 | n3 += 2000; |
| 1490 | } |
| 1491 | else if (n3 < 100) { |
| 1492 | n3 += 1900; |
| 1493 | } |
| 1494 | |
| 1495 | if (n1 > 12) /* must be DD/MM/YY */ |
| 1496 | { |
| 1497 | date = n1; |
| 1498 | month = (TIME_TOKEN)(n2 + ((int)TT_JAN) - 1); |
| 1499 | year = n3; |
| 1500 | } |
| 1501 | else /* assume MM/DD/YY */ |
| 1502 | { |
| 1503 | /* #### In the ambiguous case, should we consult the |
| 1504 | locale to find out the local default? */ |
| 1505 | month = (TIME_TOKEN)(n1 + ((int)TT_JAN) - 1); |
| 1506 | date = n2; |
| 1507 | year = n3; |
| 1508 | } |
| 1509 | rest = s; |
| 1510 | } |
| 1511 | else if ((*end >= 'A' && *end <= 'Z') || |
| 1512 | (*end >= 'a' && *end <= 'z')) |
| 1513 | /* Digits followed by non-punctuation - what's that? */ |
| 1514 | ; |
| 1515 | else if ((end - rest) == 5) /* five digits is a year */ |
| 1516 | year = (year < 0 |
| 1517 | ? ((rest[0]-'0')*10000L + |
| 1518 | (rest[1]-'0')*1000L + |
| 1519 | (rest[2]-'0')*100L + |
| 1520 | (rest[3]-'0')*10L + |
| 1521 | (rest[4]-'0')) |
| 1522 | : year); |
| 1523 | else if ((end - rest) == 4) /* four digits is a year */ |
| 1524 | year = (year < 0 |
| 1525 | ? ((rest[0]-'0')*1000L + |
| 1526 | (rest[1]-'0')*100L + |
| 1527 | (rest[2]-'0')*10L + |
| 1528 | (rest[3]-'0')) |
| 1529 | : year); |
| 1530 | else if ((end - rest) == 2) /* two digits - date or year */ |
| 1531 | { |
| 1532 | int n = ((rest[0]-'0')*10 + |
| 1533 | (rest[1]-'0')); |
| 1534 | /* If we don't have a date (day of the month) and we see a number |
| 1535 | less than 32, then assume that is the date. |
| 1536 | |
| 1537 | Otherwise, if we have a date and not a year, assume this is the |
| 1538 | year. If it is less than 70, then assume it refers to the 21st |
| 1539 | century. If it is two digits (>= 70), assume it refers to this |
| 1540 | century. Otherwise, assume it refers to an unambiguous year. |
| 1541 | |
| 1542 | The world will surely end soon. |
| 1543 | */ |
| 1544 | if (date < 0 && n < 32) { |
| 1545 | date = n; |
| 1546 | } |
| 1547 | else if (year < 0) |
| 1548 | { |
| 1549 | if (n < 70) { |
| 1550 | year = 2000 + n; |
| 1551 | } |
| 1552 | else if (n < 100) { |
| 1553 | year = 1900 + n; |
| 1554 | } |
| 1555 | else { |
| 1556 | year = n; |
| 1557 | } |
| 1558 | } |
| 1559 | /* else what the hell is this. */ |
| 1560 | } |
| 1561 | else if ((end - rest) == 1) { /* one digit - date */ |
| 1562 | date = (date < 0 ? (rest[0]-'0') : date); |
| 1563 | } |
| 1564 | /* else, three or more than five digits - what's that? */ |
| 1565 | |
| 1566 | break; |
| 1567 | } |
| 1568 | } |
| 1569 | |
| 1570 | /* Skip to the end of this token, whether we parsed it or not. |
| 1571 | Tokens are delimited by whitespace, or ,;-/ |
| 1572 | But explicitly not :+-. |
| 1573 | */ |
| 1574 | while (*rest && |
| 1575 | *rest != ' ' && *rest != '\t' && |
| 1576 | *rest != ',' && *rest != ';' && |
| 1577 | *rest != '-' && *rest != '+' && |
| 1578 | *rest != '/' && |
| 1579 | *rest != '(' && *rest != ')' && *rest != '[' && *rest != ']') { |
| 1580 | rest++; |
| 1581 | } |
| 1582 | /* skip over uninteresting chars. */ |
| 1583 | SKIP_MORE: |
| 1584 | while (*rest && |
| 1585 | (*rest == ' ' || *rest == '\t' || |
| 1586 | *rest == ',' || *rest == ';' || *rest == '/' || |
| 1587 | *rest == '(' || *rest == ')' || *rest == '[' || *rest == ']')) { |
| 1588 | rest++; |
| 1589 | } |
| 1590 | |
| 1591 | /* "-" is ignored at the beginning of a token if we have not yet |
| 1592 | parsed a year (e.g., the second "-" in "30-AUG-1966"), or if |
| 1593 | the character after the dash is not a digit. */ |
| 1594 | if (*rest == '-' && ((rest > string && |
| 1595 | isalpha((unsigned char)rest[-1])((*__ctype_b_loc ())[(int) (((unsigned char)rest[-1]))] & (unsigned short int) _ISalpha) && year < 0) || |
| 1596 | rest[1] < '0' || rest[1] > '9')) |
| 1597 | { |
| 1598 | rest++; |
| 1599 | goto SKIP_MORE; |
| 1600 | } |
| 1601 | |
| 1602 | } |
| 1603 | |
| 1604 | if (zone != TT_UNKNOWN && zone_offset == -1) |
| 1605 | { |
| 1606 | switch (zone) |
| 1607 | { |
| 1608 | case TT_PST: zone_offset = -8 * 60; break; |
| 1609 | case TT_PDT: zone_offset = -8 * 60; dst_offset = 1 * 60; break; |
| 1610 | case TT_MST: zone_offset = -7 * 60; break; |
| 1611 | case TT_MDT: zone_offset = -7 * 60; dst_offset = 1 * 60; break; |
| 1612 | case TT_CST: zone_offset = -6 * 60; break; |
| 1613 | case TT_CDT: zone_offset = -6 * 60; dst_offset = 1 * 60; break; |
| 1614 | case TT_EST: zone_offset = -5 * 60; break; |
| 1615 | case TT_EDT: zone_offset = -5 * 60; dst_offset = 1 * 60; break; |
| 1616 | case TT_AST: zone_offset = -4 * 60; break; |
| 1617 | case TT_NST: zone_offset = -3 * 60 - 30; break; |
| 1618 | case TT_GMT: zone_offset = 0 * 60; break; |
| 1619 | case TT_BST: zone_offset = 0 * 60; dst_offset = 1 * 60; break; |
| 1620 | case TT_MET: zone_offset = 1 * 60; break; |
| 1621 | case TT_EET: zone_offset = 2 * 60; break; |
| 1622 | case TT_JST: zone_offset = 9 * 60; break; |
| 1623 | default: |
| 1624 | PR_ASSERT (0)((0)?((void)0):PR_Assert("0","../../../../pr/src/misc/prtime.c" ,1624)); |
| 1625 | break; |
| 1626 | } |
| 1627 | } |
| 1628 | |
| 1629 | /* If we didn't find a year, month, or day-of-the-month, we can't |
| 1630 | possibly parse this, and in fact, mktime() will do something random |
| 1631 | (I'm seeing it return "Tue Feb 5 06:28:16 2036", which is no doubt |
| 1632 | a numerologically significant date... */ |
| 1633 | if (month == TT_UNKNOWN || date == -1 || year == -1 || year > PR_INT16_MAX32767) { |
| 1634 | return PR_FAILURE; |
| 1635 | } |
| 1636 | |
| 1637 | memset(result, 0, sizeof(*result)); |
| 1638 | if (sec != -1) { |
| 1639 | result->tm_sec = sec; |
| 1640 | } |
| 1641 | if (min != -1) { |
| 1642 | result->tm_min = min; |
| 1643 | } |
| 1644 | if (hour != -1) { |
| 1645 | result->tm_hour = hour; |
| 1646 | } |
| 1647 | if (date != -1) { |
| 1648 | result->tm_mday = date; |
| 1649 | } |
| 1650 | if (month != TT_UNKNOWN) { |
| 1651 | result->tm_month = (((int)month) - ((int)TT_JAN)); |
| 1652 | } |
| 1653 | if (year != -1) { |
| 1654 | result->tm_year = year; |
| 1655 | } |
| 1656 | if (dotw != TT_UNKNOWN) { |
| 1657 | result->tm_wday = (((int)dotw) - ((int)TT_SUN)); |
| 1658 | } |
| 1659 | /* |
| 1660 | * Mainly to compute wday and yday, but normalized time is also required |
| 1661 | * by the check below that works around a Visual C++ 2005 mktime problem. |
| 1662 | */ |
| 1663 | PR_NormalizeTime(result, PR_GMTParameters); |
| 1664 | /* The remaining work is to set the gmt and dst offsets in tm_params. */ |
| 1665 | |
| 1666 | if (zone == TT_UNKNOWN && default_to_gmt) |
| 1667 | { |
| 1668 | /* No zone was specified, so pretend the zone was GMT. */ |
| 1669 | zone = TT_GMT; |
Value stored to 'zone' is never read | |
| 1670 | zone_offset = 0; |
| 1671 | } |
| 1672 | |
| 1673 | if (zone_offset == -1) |
| 1674 | { |
| 1675 | /* no zone was specified, and we're to assume that everything |
| 1676 | is local. */ |
| 1677 | struct tm localTime; |
| 1678 | time_t secs; |
| 1679 | |
| 1680 | PR_ASSERT(result->tm_month > -1 &&((result->tm_month > -1 && result->tm_mday > 0 && result->tm_hour > -1 && result-> tm_min > -1 && result->tm_sec > -1)?((void)0 ):PR_Assert("result->tm_month > -1 && result->tm_mday > 0 && result->tm_hour > -1 && result->tm_min > -1 && result->tm_sec > -1" ,"../../../../pr/src/misc/prtime.c",1684)) |
| 1681 | result->tm_mday > 0 &&((result->tm_month > -1 && result->tm_mday > 0 && result->tm_hour > -1 && result-> tm_min > -1 && result->tm_sec > -1)?((void)0 ):PR_Assert("result->tm_month > -1 && result->tm_mday > 0 && result->tm_hour > -1 && result->tm_min > -1 && result->tm_sec > -1" ,"../../../../pr/src/misc/prtime.c",1684)) |
| 1682 | result->tm_hour > -1 &&((result->tm_month > -1 && result->tm_mday > 0 && result->tm_hour > -1 && result-> tm_min > -1 && result->tm_sec > -1)?((void)0 ):PR_Assert("result->tm_month > -1 && result->tm_mday > 0 && result->tm_hour > -1 && result->tm_min > -1 && result->tm_sec > -1" ,"../../../../pr/src/misc/prtime.c",1684)) |
| 1683 | result->tm_min > -1 &&((result->tm_month > -1 && result->tm_mday > 0 && result->tm_hour > -1 && result-> tm_min > -1 && result->tm_sec > -1)?((void)0 ):PR_Assert("result->tm_month > -1 && result->tm_mday > 0 && result->tm_hour > -1 && result->tm_min > -1 && result->tm_sec > -1" ,"../../../../pr/src/misc/prtime.c",1684)) |
| 1684 | result->tm_sec > -1)((result->tm_month > -1 && result->tm_mday > 0 && result->tm_hour > -1 && result-> tm_min > -1 && result->tm_sec > -1)?((void)0 ):PR_Assert("result->tm_month > -1 && result->tm_mday > 0 && result->tm_hour > -1 && result->tm_min > -1 && result->tm_sec > -1" ,"../../../../pr/src/misc/prtime.c",1684)); |
| 1685 | |
| 1686 | /* |
| 1687 | * To obtain time_t from a tm structure representing the local |
| 1688 | * time, we call mktime(). However, we need to see if we are |
| 1689 | * on 1-Jan-1970 or before. If we are, we can't call mktime() |
| 1690 | * because mktime() will crash on win16. In that case, we |
| 1691 | * calculate zone_offset based on the zone offset at |
| 1692 | * 00:00:00, 2 Jan 1970 GMT, and subtract zone_offset from the |
| 1693 | * date we are parsing to transform the date to GMT. We also |
| 1694 | * do so if mktime() returns (time_t) -1 (time out of range). |
| 1695 | */ |
| 1696 | |
| 1697 | /* month, day, hours, mins and secs are always non-negative |
| 1698 | so we dont need to worry about them. */ |
| 1699 | if(result->tm_year >= 1970) |
| 1700 | { |
| 1701 | PRInt64 usec_per_sec; |
| 1702 | |
| 1703 | localTime.tm_sec = result->tm_sec; |
| 1704 | localTime.tm_min = result->tm_min; |
| 1705 | localTime.tm_hour = result->tm_hour; |
| 1706 | localTime.tm_mday = result->tm_mday; |
| 1707 | localTime.tm_mon = result->tm_month; |
| 1708 | localTime.tm_year = result->tm_year - 1900; |
| 1709 | /* Set this to -1 to tell mktime "I don't care". If you set |
| 1710 | it to 0 or 1, you are making assertions about whether the |
| 1711 | date you are handing it is in daylight savings mode or not; |
| 1712 | and if you're wrong, it will "fix" it for you. */ |
| 1713 | localTime.tm_isdst = -1; |
| 1714 | |
| 1715 | #if _MSC_VER == 1400 /* 1400 = Visual C++ 2005 (8.0) */ |
| 1716 | /* |
| 1717 | * mktime will return (time_t) -1 if the input is a date |
| 1718 | * after 23:59:59, December 31, 3000, US Pacific Time (not |
| 1719 | * UTC as documented): |
| 1720 | * http://msdn.microsoft.com/en-us/library/d1y53h2a(VS.80).aspx |
| 1721 | * But if the year is 3001, mktime also invokes the invalid |
| 1722 | * parameter handler, causing the application to crash. This |
| 1723 | * problem has been reported in |
| 1724 | * http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=266036. |
| 1725 | * We avoid this crash by not calling mktime if the date is |
| 1726 | * out of range. To use a simple test that works in any time |
| 1727 | * zone, we consider year 3000 out of range as well. (See |
| 1728 | * bug 480740.) |
| 1729 | */ |
| 1730 | if (result->tm_year >= 3000) { |
| 1731 | /* Emulate what mktime would have done. */ |
| 1732 | errno(*__errno_location ()) = EINVAL22; |
| 1733 | secs = (time_t) -1; |
| 1734 | } else { |
| 1735 | secs = mktime(&localTime); |
| 1736 | } |
| 1737 | #else |
| 1738 | secs = mktime(&localTime); |
| 1739 | #endif |
| 1740 | if (secs != (time_t) -1) |
| 1741 | { |
| 1742 | PRTime usecs64; |
| 1743 | LL_I2L(usecs64, secs)((usecs64) = (PRInt64)(secs)); |
| 1744 | LL_I2L(usec_per_sec, PR_USEC_PER_SEC)((usec_per_sec) = (PRInt64)(1000000L)); |
| 1745 | LL_MUL(usecs64, usecs64, usec_per_sec)((usecs64) = (usecs64) * (usec_per_sec)); |
| 1746 | PR_ExplodeTime(usecs64, PR_LocalTimeParameters, result); |
| 1747 | return PR_SUCCESS; |
| 1748 | } |
| 1749 | } |
| 1750 | |
| 1751 | /* So mktime() can't handle this case. We assume the |
| 1752 | zone_offset for the date we are parsing is the same as |
| 1753 | the zone offset on 00:00:00 2 Jan 1970 GMT. */ |
| 1754 | secs = 86400; |
| 1755 | localTimeResult = MT_safe_localtimelocaltime_r(&secs, &localTime); |
| 1756 | PR_ASSERT(localTimeResult != NULL)((localTimeResult != ((void*)0))?((void)0):PR_Assert("localTimeResult != NULL" ,"../../../../pr/src/misc/prtime.c",1756)); |
| 1757 | if (localTimeResult == NULL((void*)0)) { |
| 1758 | return PR_FAILURE; |
| 1759 | } |
| 1760 | zone_offset = localTime.tm_min |
| 1761 | + 60 * localTime.tm_hour |
| 1762 | + 1440 * (localTime.tm_mday - 2); |
| 1763 | } |
| 1764 | |
| 1765 | result->tm_params.tp_gmt_offset = zone_offset * 60; |
| 1766 | result->tm_params.tp_dst_offset = dst_offset * 60; |
| 1767 | |
| 1768 | return PR_SUCCESS; |
| 1769 | } |
| 1770 | |
| 1771 | PR_IMPLEMENT(PRStatus)__attribute__((visibility("default"))) PRStatus |
| 1772 | PR_ParseTimeString( |
| 1773 | const char *string, |
| 1774 | PRBool default_to_gmt, |
| 1775 | PRTime *result) |
| 1776 | { |
| 1777 | PRExplodedTime tm; |
| 1778 | PRStatus rv; |
| 1779 | |
| 1780 | rv = PR_ParseTimeStringToExplodedTime(string, |
| 1781 | default_to_gmt, |
| 1782 | &tm); |
| 1783 | if (rv != PR_SUCCESS) { |
| 1784 | return rv; |
| 1785 | } |
| 1786 | |
| 1787 | *result = PR_ImplodeTime(&tm); |
| 1788 | |
| 1789 | return PR_SUCCESS; |
| 1790 | } |
| 1791 | |
| 1792 | /* |
| 1793 | ******************************************************************* |
| 1794 | ******************************************************************* |
| 1795 | ** |
| 1796 | ** OLD COMPATIBILITY FUNCTIONS |
| 1797 | ** |
| 1798 | ******************************************************************* |
| 1799 | ******************************************************************* |
| 1800 | */ |
| 1801 | |
| 1802 | |
| 1803 | /* |
| 1804 | *----------------------------------------------------------------------- |
| 1805 | * |
| 1806 | * PR_FormatTime -- |
| 1807 | * |
| 1808 | * Format a time value into a buffer. Same semantics as strftime(). |
| 1809 | * |
| 1810 | *----------------------------------------------------------------------- |
| 1811 | */ |
| 1812 | |
| 1813 | PR_IMPLEMENT(PRUint32)__attribute__((visibility("default"))) PRUint32 |
| 1814 | PR_FormatTime(char *buf, int buflen, const char *fmt, |
| 1815 | const PRExplodedTime *time) |
| 1816 | { |
| 1817 | size_t rv; |
| 1818 | struct tm a; |
| 1819 | struct tm *ap; |
| 1820 | |
| 1821 | if (time) { |
| 1822 | ap = &a; |
| 1823 | a.tm_sec = time->tm_sec; |
| 1824 | a.tm_min = time->tm_min; |
| 1825 | a.tm_hour = time->tm_hour; |
| 1826 | a.tm_mday = time->tm_mday; |
| 1827 | a.tm_mon = time->tm_month; |
| 1828 | a.tm_wday = time->tm_wday; |
| 1829 | a.tm_year = time->tm_year - 1900; |
| 1830 | a.tm_yday = time->tm_yday; |
| 1831 | a.tm_isdst = time->tm_params.tp_dst_offset ? 1 : 0; |
| 1832 | |
| 1833 | /* |
| 1834 | * On some platforms, for example SunOS 4, struct tm has two |
| 1835 | * additional fields: tm_zone and tm_gmtoff. |
| 1836 | */ |
| 1837 | |
| 1838 | #if (__GLIBC__2 >= 2) || defined(NETBSD) \ |
| 1839 | || defined(OPENBSD) || defined(FREEBSD) \ |
| 1840 | || defined(DARWIN) || defined(ANDROID) |
| 1841 | a.tm_zone = NULL((void*)0); |
| 1842 | a.tm_gmtoff = time->tm_params.tp_gmt_offset + |
| 1843 | time->tm_params.tp_dst_offset; |
| 1844 | #endif |
| 1845 | } else { |
| 1846 | ap = NULL((void*)0); |
| 1847 | } |
| 1848 | |
| 1849 | rv = strftime(buf, buflen, fmt, ap); |
| 1850 | if (!rv && buf && buflen > 0) { |
| 1851 | /* |
| 1852 | * When strftime fails, the contents of buf are indeterminate. |
| 1853 | * Some callers don't check the return value from this function, |
| 1854 | * so store an empty string in buf in case they try to print it. |
| 1855 | */ |
| 1856 | buf[0] = '\0'; |
| 1857 | } |
| 1858 | return rv; |
| 1859 | } |
| 1860 | |
| 1861 | |
| 1862 | /* |
| 1863 | * The following string arrays and macros are used by PR_FormatTimeUSEnglish(). |
| 1864 | */ |
| 1865 | |
| 1866 | static const char* abbrevDays[] = |
| 1867 | { |
| 1868 | "Sun","Mon","Tue","Wed","Thu","Fri","Sat" |
| 1869 | }; |
| 1870 | |
| 1871 | static const char* days[] = |
| 1872 | { |
| 1873 | "Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday" |
| 1874 | }; |
| 1875 | |
| 1876 | static const char* abbrevMonths[] = |
| 1877 | { |
| 1878 | "Jan", "Feb", "Mar", "Apr", "May", "Jun", |
| 1879 | "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" |
| 1880 | }; |
| 1881 | |
| 1882 | static const char* months[] = |
| 1883 | { |
| 1884 | "January", "February", "March", "April", "May", "June", |
| 1885 | "July", "August", "September", "October", "November", "December" |
| 1886 | }; |
| 1887 | |
| 1888 | |
| 1889 | /* |
| 1890 | * Add a single character to the given buffer, incrementing the buffer pointer |
| 1891 | * and decrementing the buffer size. Return 0 on error. |
| 1892 | */ |
| 1893 | #define ADDCHAR( buf, bufSize, ch )do { if( bufSize < 1 ) { *(--buf) = '\0'; return 0; } *buf ++ = ch; bufSize--; } while(0) \ |
| 1894 | do \ |
| 1895 | { \ |
| 1896 | if( bufSize < 1 ) \ |
| 1897 | { \ |
| 1898 | *(--buf) = '\0'; \ |
| 1899 | return 0; \ |
| 1900 | } \ |
| 1901 | *buf++ = ch; \ |
| 1902 | bufSize--; \ |
| 1903 | } \ |
| 1904 | while(0) |
| 1905 | |
| 1906 | |
| 1907 | /* |
| 1908 | * Add a string to the given buffer, incrementing the buffer pointer |
| 1909 | * and decrementing the buffer size appropriately. Return 0 on error. |
| 1910 | */ |
| 1911 | #define ADDSTR( buf, bufSize, str )do { PRUint32 strSize = strlen( str ); if( strSize > bufSize ) { if( bufSize==0 ) *(--buf) = '\0'; else *buf = '\0'; return 0; } memcpy(buf, str, strSize); buf += strSize; bufSize -= strSize ; } while(0) \ |
| 1912 | do \ |
| 1913 | { \ |
| 1914 | PRUint32 strSize = strlen( str ); \ |
| 1915 | if( strSize > bufSize ) \ |
| 1916 | { \ |
| 1917 | if( bufSize==0 ) \ |
| 1918 | *(--buf) = '\0'; \ |
| 1919 | else \ |
| 1920 | *buf = '\0'; \ |
| 1921 | return 0; \ |
| 1922 | } \ |
| 1923 | memcpy(buf, str, strSize); \ |
| 1924 | buf += strSize; \ |
| 1925 | bufSize -= strSize; \ |
| 1926 | } \ |
| 1927 | while(0) |
| 1928 | |
| 1929 | /* Needed by PR_FormatTimeUSEnglish() */ |
| 1930 | static unsigned int pr_WeekOfYear(const PRExplodedTime* time, |
| 1931 | unsigned int firstDayOfWeek); |
| 1932 | |
| 1933 | |
| 1934 | /*********************************************************************************** |
| 1935 | * |
| 1936 | * Description: |
| 1937 | * This is a dumbed down version of strftime that will format the date in US |
| 1938 | * English regardless of the setting of the global locale. This functionality is |
| 1939 | * needed to write things like MIME headers which must always be in US English. |
| 1940 | * |
| 1941 | **********************************************************************************/ |
| 1942 | |
| 1943 | PR_IMPLEMENT(PRUint32)__attribute__((visibility("default"))) PRUint32 |
| 1944 | PR_FormatTimeUSEnglish( char* buf, PRUint32 bufSize, |
| 1945 | const char* format, const PRExplodedTime* time ) |
| 1946 | { |
| 1947 | char* bufPtr = buf; |
| 1948 | const char* fmtPtr; |
| 1949 | char tmpBuf[ 40 ]; |
| 1950 | const int tmpBufSize = sizeof( tmpBuf ); |
| 1951 | |
| 1952 | |
| 1953 | for( fmtPtr=format; *fmtPtr != '\0'; fmtPtr++ ) |
| 1954 | { |
| 1955 | if( *fmtPtr != '%' ) |
| 1956 | { |
| 1957 | ADDCHAR( bufPtr, bufSize, *fmtPtr )do { if( bufSize < 1 ) { *(--bufPtr) = '\0'; return 0; } * bufPtr++ = *fmtPtr; bufSize--; } while(0); |
| 1958 | } |
| 1959 | else |
| 1960 | { |
| 1961 | switch( *(++fmtPtr) ) |
| 1962 | { |
| 1963 | case '%': |
| 1964 | /* escaped '%' character */ |
| 1965 | ADDCHAR( bufPtr, bufSize, '%' )do { if( bufSize < 1 ) { *(--bufPtr) = '\0'; return 0; } * bufPtr++ = '%'; bufSize--; } while(0); |
| 1966 | break; |
| 1967 | |
| 1968 | case 'a': |
| 1969 | /* abbreviated weekday name */ |
| 1970 | ADDSTR( bufPtr, bufSize, abbrevDays[ time->tm_wday ] )do { PRUint32 strSize = strlen( abbrevDays[ time->tm_wday ] ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0'; return 0; } memcpy(bufPtr, abbrevDays [ time->tm_wday ], strSize); bufPtr += strSize; bufSize -= strSize; } while(0); |
| 1971 | break; |
| 1972 | |
| 1973 | case 'A': |
| 1974 | /* full weekday name */ |
| 1975 | ADDSTR( bufPtr, bufSize, days[ time->tm_wday ] )do { PRUint32 strSize = strlen( days[ time->tm_wday ] ); if ( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0' ; else *bufPtr = '\0'; return 0; } memcpy(bufPtr, days[ time-> tm_wday ], strSize); bufPtr += strSize; bufSize -= strSize; } while(0); |
| 1976 | break; |
| 1977 | |
| 1978 | case 'b': |
| 1979 | /* abbreviated month name */ |
| 1980 | ADDSTR( bufPtr, bufSize, abbrevMonths[ time->tm_month ] )do { PRUint32 strSize = strlen( abbrevMonths[ time->tm_month ] ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr ) = '\0'; else *bufPtr = '\0'; return 0; } memcpy(bufPtr, abbrevMonths [ time->tm_month ], strSize); bufPtr += strSize; bufSize -= strSize; } while(0); |
| 1981 | break; |
| 1982 | |
| 1983 | case 'B': |
| 1984 | /* full month name */ |
| 1985 | ADDSTR(bufPtr, bufSize, months[ time->tm_month ] )do { PRUint32 strSize = strlen( months[ time->tm_month ] ) ; if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0'; return 0; } memcpy(bufPtr, months [ time->tm_month ], strSize); bufPtr += strSize; bufSize -= strSize; } while(0); |
| 1986 | break; |
| 1987 | |
| 1988 | case 'c': |
| 1989 | /* Date and time. */ |
| 1990 | PR_FormatTimeUSEnglish( tmpBuf, tmpBufSize, "%a %b %d %H:%M:%S %Y", time ); |
| 1991 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 1992 | break; |
| 1993 | |
| 1994 | case 'd': |
| 1995 | /* day of month ( 01 - 31 ) */ |
| 1996 | PR_snprintf(tmpBuf,tmpBufSize,"%.2ld",time->tm_mday ); |
| 1997 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 1998 | break; |
| 1999 | |
| 2000 | case 'H': |
| 2001 | /* hour ( 00 - 23 ) */ |
| 2002 | PR_snprintf(tmpBuf,tmpBufSize,"%.2ld",time->tm_hour ); |
| 2003 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2004 | break; |
| 2005 | |
| 2006 | case 'I': |
| 2007 | /* hour ( 01 - 12 ) */ |
| 2008 | PR_snprintf(tmpBuf,tmpBufSize,"%.2ld", |
| 2009 | (time->tm_hour%12) ? time->tm_hour%12 : (PRInt32) 12 ); |
| 2010 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2011 | break; |
| 2012 | |
| 2013 | case 'j': |
| 2014 | /* day number of year ( 001 - 366 ) */ |
| 2015 | PR_snprintf(tmpBuf,tmpBufSize,"%.3d",time->tm_yday + 1); |
| 2016 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2017 | break; |
| 2018 | |
| 2019 | case 'm': |
| 2020 | /* month number ( 01 - 12 ) */ |
| 2021 | PR_snprintf(tmpBuf,tmpBufSize,"%.2ld",time->tm_month+1); |
| 2022 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2023 | break; |
| 2024 | |
| 2025 | case 'M': |
| 2026 | /* minute ( 00 - 59 ) */ |
| 2027 | PR_snprintf(tmpBuf,tmpBufSize,"%.2ld",time->tm_min ); |
| 2028 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2029 | break; |
| 2030 | |
| 2031 | case 'p': |
| 2032 | /* locale's equivalent of either AM or PM */ |
| 2033 | ADDSTR( bufPtr, bufSize, (time->tm_hour<12)?"AM":"PM" )do { PRUint32 strSize = strlen( (time->tm_hour<12)?"AM" :"PM" ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr ) = '\0'; else *bufPtr = '\0'; return 0; } memcpy(bufPtr, (time ->tm_hour<12)?"AM":"PM", strSize); bufPtr += strSize; bufSize -= strSize; } while(0); |
| 2034 | break; |
| 2035 | |
| 2036 | case 'S': |
| 2037 | /* seconds ( 00 - 61 ), allows for leap seconds */ |
| 2038 | PR_snprintf(tmpBuf,tmpBufSize,"%.2ld",time->tm_sec ); |
| 2039 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2040 | break; |
| 2041 | |
| 2042 | case 'U': |
| 2043 | /* week number of year ( 00 - 53 ), Sunday is the first day of week 1 */ |
| 2044 | PR_snprintf(tmpBuf,tmpBufSize,"%.2d", pr_WeekOfYear( time, 0 ) ); |
| 2045 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2046 | break; |
| 2047 | |
| 2048 | case 'w': |
| 2049 | /* weekday number ( 0 - 6 ), Sunday = 0 */ |
| 2050 | PR_snprintf(tmpBuf,tmpBufSize,"%d",time->tm_wday ); |
| 2051 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2052 | break; |
| 2053 | |
| 2054 | case 'W': |
| 2055 | /* Week number of year ( 00 - 53 ), Monday is the first day of week 1 */ |
| 2056 | PR_snprintf(tmpBuf,tmpBufSize,"%.2d", pr_WeekOfYear( time, 1 ) ); |
| 2057 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2058 | break; |
| 2059 | |
| 2060 | case 'x': |
| 2061 | /* Date representation */ |
| 2062 | PR_FormatTimeUSEnglish( tmpBuf, tmpBufSize, "%m/%d/%y", time ); |
| 2063 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2064 | break; |
| 2065 | |
| 2066 | case 'X': |
| 2067 | /* Time representation. */ |
| 2068 | PR_FormatTimeUSEnglish( tmpBuf, tmpBufSize, "%H:%M:%S", time ); |
| 2069 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2070 | break; |
| 2071 | |
| 2072 | case 'y': |
| 2073 | /* year within century ( 00 - 99 ) */ |
| 2074 | PR_snprintf(tmpBuf,tmpBufSize,"%.2d",time->tm_year % 100 ); |
| 2075 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2076 | break; |
| 2077 | |
| 2078 | case 'Y': |
| 2079 | /* year as ccyy ( for example 1986 ) */ |
| 2080 | PR_snprintf(tmpBuf,tmpBufSize,"%.4d",time->tm_year ); |
| 2081 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2082 | break; |
| 2083 | |
| 2084 | case 'Z': |
| 2085 | /* Time zone name or no characters if no time zone exists. |
| 2086 | * Since time zone name is supposed to be independant of locale, we |
| 2087 | * defer to PR_FormatTime() for this option. |
| 2088 | */ |
| 2089 | PR_FormatTime( tmpBuf, tmpBufSize, "%Z", time ); |
| 2090 | ADDSTR( bufPtr, bufSize, tmpBuf )do { PRUint32 strSize = strlen( tmpBuf ); if( strSize > bufSize ) { if( bufSize==0 ) *(--bufPtr) = '\0'; else *bufPtr = '\0' ; return 0; } memcpy(bufPtr, tmpBuf, strSize); bufPtr += strSize ; bufSize -= strSize; } while(0); |
| 2091 | break; |
| 2092 | |
| 2093 | default: |
| 2094 | /* Unknown format. Simply copy format into output buffer. */ |
| 2095 | ADDCHAR( bufPtr, bufSize, '%' )do { if( bufSize < 1 ) { *(--bufPtr) = '\0'; return 0; } * bufPtr++ = '%'; bufSize--; } while(0); |
| 2096 | ADDCHAR( bufPtr, bufSize, *fmtPtr )do { if( bufSize < 1 ) { *(--bufPtr) = '\0'; return 0; } * bufPtr++ = *fmtPtr; bufSize--; } while(0); |
| 2097 | break; |
| 2098 | |
| 2099 | } |
| 2100 | } |
| 2101 | } |
| 2102 | |
| 2103 | ADDCHAR( bufPtr, bufSize, '\0' )do { if( bufSize < 1 ) { *(--bufPtr) = '\0'; return 0; } * bufPtr++ = '\0'; bufSize--; } while(0); |
| 2104 | return (PRUint32)(bufPtr - buf - 1); |
| 2105 | } |
| 2106 | |
| 2107 | |
| 2108 | |
| 2109 | /*********************************************************************************** |
| 2110 | * |
| 2111 | * Description: |
| 2112 | * Returns the week number of the year (0-53) for the given time. firstDayOfWeek |
| 2113 | * is the day on which the week is considered to start (0=Sun, 1=Mon, ...). |
| 2114 | * Week 1 starts the first time firstDayOfWeek occurs in the year. In other words, |
| 2115 | * a partial week at the start of the year is considered week 0. |
| 2116 | * |
| 2117 | **********************************************************************************/ |
| 2118 | |
| 2119 | static unsigned int |
| 2120 | pr_WeekOfYear(const PRExplodedTime* time, unsigned int firstDayOfWeek) |
| 2121 | { |
| 2122 | int dayOfWeek; |
| 2123 | int dayOfYear; |
| 2124 | |
| 2125 | /* Get the day of the year for the given time then adjust it to represent the |
| 2126 | * first day of the week containing the given time. |
| 2127 | */ |
| 2128 | dayOfWeek = time->tm_wday - firstDayOfWeek; |
| 2129 | if (dayOfWeek < 0) { |
| 2130 | dayOfWeek += 7; |
| 2131 | } |
| 2132 | |
| 2133 | dayOfYear = time->tm_yday - dayOfWeek; |
| 2134 | |
| 2135 | if( dayOfYear <= 0 ) |
| 2136 | { |
| 2137 | /* If dayOfYear is <= 0, it is in the first partial week of the year. */ |
| 2138 | return 0; |
| 2139 | } |
| 2140 | |
| 2141 | /* Count the number of full weeks ( dayOfYear / 7 ) then add a week if there |
| 2142 | * are any days left over ( dayOfYear % 7 ). Because we are only counting to |
| 2143 | * the first day of the week containing the given time, rather than to the |
| 2144 | * actual day representing the given time, any days in week 0 will be "absorbed" |
| 2145 | * as extra days in the given week. |
| 2146 | */ |
| 2147 | return (dayOfYear / 7) + ( (dayOfYear % 7) == 0 ? 0 : 1 ); |
| 2148 | |
| 2149 | } |
| 2150 |