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comparison: intl/icu/source/common/putil.cpp
intl/icu/source/common/putil.cpp
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| -1:000000000000 | 0:a1a9293c10a4 |
|---|---|
| 1 /* | |
| 2 ****************************************************************************** | |
| 3 * | |
| 4 * Copyright (C) 1997-2013, International Business Machines | |
| 5 * Corporation and others. All Rights Reserved. | |
| 6 * | |
| 7 ****************************************************************************** | |
| 8 * | |
| 9 * FILE NAME : putil.c (previously putil.cpp and ptypes.cpp) | |
| 10 * | |
| 11 * Date Name Description | |
| 12 * 04/14/97 aliu Creation. | |
| 13 * 04/24/97 aliu Added getDefaultDataDirectory() and | |
| 14 * getDefaultLocaleID(). | |
| 15 * 04/28/97 aliu Rewritten to assume Unix and apply general methods | |
| 16 * for assumed case. Non-UNIX platforms must be | |
| 17 * special-cased. Rewrote numeric methods dealing | |
| 18 * with NaN and Infinity to be platform independent | |
| 19 * over all IEEE 754 platforms. | |
| 20 * 05/13/97 aliu Restored sign of timezone | |
| 21 * (semantics are hours West of GMT) | |
| 22 * 06/16/98 erm Added IEEE_754 stuff, cleaned up isInfinite, isNan, | |
| 23 * nextDouble.. | |
| 24 * 07/22/98 stephen Added remainder, max, min, trunc | |
| 25 * 08/13/98 stephen Added isNegativeInfinity, isPositiveInfinity | |
| 26 * 08/24/98 stephen Added longBitsFromDouble | |
| 27 * 09/08/98 stephen Minor changes for Mac Port | |
| 28 * 03/02/99 stephen Removed openFile(). Added AS400 support. | |
| 29 * Fixed EBCDIC tables | |
| 30 * 04/15/99 stephen Converted to C. | |
| 31 * 06/28/99 stephen Removed mutex locking in u_isBigEndian(). | |
| 32 * 08/04/99 jeffrey R. Added OS/2 changes | |
| 33 * 11/15/99 helena Integrated S/390 IEEE support. | |
| 34 * 04/26/01 Barry N. OS/400 support for uprv_getDefaultLocaleID | |
| 35 * 08/15/01 Steven H. OS/400 support for uprv_getDefaultCodepage | |
| 36 * 01/03/08 Steven L. Fake Time Support | |
| 37 ****************************************************************************** | |
| 38 */ | |
| 39 | |
| 40 // Defines _XOPEN_SOURCE for access to POSIX functions. | |
| 41 // Must be before any other #includes. | |
| 42 #include "uposixdefs.h" | |
| 43 | |
| 44 /* include ICU headers */ | |
| 45 #include "unicode/utypes.h" | |
| 46 #include "unicode/putil.h" | |
| 47 #include "unicode/ustring.h" | |
| 48 #include "putilimp.h" | |
| 49 #include "uassert.h" | |
| 50 #include "umutex.h" | |
| 51 #include "cmemory.h" | |
| 52 #include "cstring.h" | |
| 53 #include "locmap.h" | |
| 54 #include "ucln_cmn.h" | |
| 55 | |
| 56 /* Include standard headers. */ | |
| 57 #include <stdio.h> | |
| 58 #include <stdlib.h> | |
| 59 #include <string.h> | |
| 60 #include <math.h> | |
| 61 #include <locale.h> | |
| 62 #include <float.h> | |
| 63 | |
| 64 #ifndef U_COMMON_IMPLEMENTATION | |
| 65 #error U_COMMON_IMPLEMENTATION not set - must be set for all ICU source files in common/ - see http://userguide.icu-project.org/howtouseicu | |
| 66 #endif | |
| 67 | |
| 68 | |
| 69 /* include system headers */ | |
| 70 #if U_PLATFORM_USES_ONLY_WIN32_API | |
| 71 /* | |
| 72 * TODO: U_PLATFORM_USES_ONLY_WIN32_API includes MinGW. | |
| 73 * Should Cygwin be included as well (U_PLATFORM_HAS_WIN32_API) | |
| 74 * to use native APIs as much as possible? | |
| 75 */ | |
| 76 # define WIN32_LEAN_AND_MEAN | |
| 77 # define VC_EXTRALEAN | |
| 78 # define NOUSER | |
| 79 # define NOSERVICE | |
| 80 # define NOIME | |
| 81 # define NOMCX | |
| 82 # include <windows.h> | |
| 83 # include "wintz.h" | |
| 84 #elif U_PLATFORM == U_PF_OS400 | |
| 85 # include <float.h> | |
| 86 # include <qusec.h> /* error code structure */ | |
| 87 # include <qusrjobi.h> | |
| 88 # include <qliept.h> /* EPT_CALL macro - this include must be after all other "QSYSINCs" */ | |
| 89 # include <mih/testptr.h> /* For uprv_maximumPtr */ | |
| 90 #elif U_PLATFORM == U_PF_CLASSIC_MACOS | |
| 91 # include <Files.h> | |
| 92 # include <IntlResources.h> | |
| 93 # include <Script.h> | |
| 94 # include <Folders.h> | |
| 95 # include <MacTypes.h> | |
| 96 # include <TextUtils.h> | |
| 97 # define ICU_NO_USER_DATA_OVERRIDE 1 | |
| 98 #elif U_PLATFORM == U_PF_OS390 | |
| 99 # include "unicode/ucnv.h" /* Needed for UCNV_SWAP_LFNL_OPTION_STRING */ | |
| 100 #elif U_PLATFORM_IS_DARWIN_BASED || U_PLATFORM_IS_LINUX_BASED || U_PLATFORM == U_PF_BSD || U_PLATFORM == U_PF_SOLARIS | |
| 101 # include <limits.h> | |
| 102 # include <unistd.h> | |
| 103 # if U_PLATFORM == U_PF_SOLARIS | |
| 104 # ifndef _XPG4_2 | |
| 105 # define _XPG4_2 | |
| 106 # endif | |
| 107 # endif | |
| 108 #elif U_PLATFORM == U_PF_QNX | |
| 109 # include <sys/neutrino.h> | |
| 110 #endif | |
| 111 | |
| 112 #if (U_PF_MINGW <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN) && defined(__STRICT_ANSI__) | |
| 113 /* tzset isn't defined in strict ANSI on Cygwin and MinGW. */ | |
| 114 #undef __STRICT_ANSI__ | |
| 115 #endif | |
| 116 | |
| 117 /* | |
| 118 * Cygwin with GCC requires inclusion of time.h after the above disabling strict asci mode statement. | |
| 119 */ | |
| 120 #include <time.h> | |
| 121 | |
| 122 #if !U_PLATFORM_USES_ONLY_WIN32_API | |
| 123 #include <sys/time.h> | |
| 124 #endif | |
| 125 | |
| 126 /* | |
| 127 * Only include langinfo.h if we have a way to get the codeset. If we later | |
| 128 * depend on more feature, we can test on U_HAVE_NL_LANGINFO. | |
| 129 * | |
| 130 */ | |
| 131 | |
| 132 #if U_HAVE_NL_LANGINFO_CODESET | |
| 133 #include <langinfo.h> | |
| 134 #endif | |
| 135 | |
| 136 /** | |
| 137 * Simple things (presence of functions, etc) should just go in configure.in and be added to | |
| 138 * icucfg.h via autoheader. | |
| 139 */ | |
| 140 #if U_PLATFORM_IMPLEMENTS_POSIX | |
| 141 # if U_PLATFORM == U_PF_OS400 | |
| 142 # define HAVE_DLFCN_H 0 | |
| 143 # define HAVE_DLOPEN 0 | |
| 144 # else | |
| 145 # ifndef HAVE_DLFCN_H | |
| 146 # define HAVE_DLFCN_H 1 | |
| 147 # endif | |
| 148 # ifndef HAVE_DLOPEN | |
| 149 # define HAVE_DLOPEN 1 | |
| 150 # endif | |
| 151 # endif | |
| 152 # ifndef HAVE_GETTIMEOFDAY | |
| 153 # define HAVE_GETTIMEOFDAY 1 | |
| 154 # endif | |
| 155 #else | |
| 156 # define HAVE_DLFCN_H 0 | |
| 157 # define HAVE_DLOPEN 0 | |
| 158 # define HAVE_GETTIMEOFDAY 0 | |
| 159 #endif | |
| 160 | |
| 161 #define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0])) | |
| 162 | |
| 163 /* Define the extension for data files, again... */ | |
| 164 #define DATA_TYPE "dat" | |
| 165 | |
| 166 /* Leave this copyright notice here! */ | |
| 167 static const char copyright[] = U_COPYRIGHT_STRING; | |
| 168 | |
| 169 /* floating point implementations ------------------------------------------- */ | |
| 170 | |
| 171 /* We return QNAN rather than SNAN*/ | |
| 172 #define SIGN 0x80000000U | |
| 173 | |
| 174 /* Make it easy to define certain types of constants */ | |
| 175 typedef union { | |
| 176 int64_t i64; /* This must be defined first in order to allow the initialization to work. This is a C89 feature. */ | |
| 177 double d64; | |
| 178 } BitPatternConversion; | |
| 179 static const BitPatternConversion gNan = { (int64_t) INT64_C(0x7FF8000000000000) }; | |
| 180 static const BitPatternConversion gInf = { (int64_t) INT64_C(0x7FF0000000000000) }; | |
| 181 | |
| 182 /*--------------------------------------------------------------------------- | |
| 183 Platform utilities | |
| 184 Our general strategy is to assume we're on a POSIX platform. Platforms which | |
| 185 are non-POSIX must declare themselves so. The default POSIX implementation | |
| 186 will sometimes work for non-POSIX platforms as well (e.g., the NaN-related | |
| 187 functions). | |
| 188 ---------------------------------------------------------------------------*/ | |
| 189 | |
| 190 #if U_PLATFORM_USES_ONLY_WIN32_API || U_PLATFORM == U_PF_CLASSIC_MACOS || U_PLATFORM == U_PF_OS400 | |
| 191 # undef U_POSIX_LOCALE | |
| 192 #else | |
| 193 # define U_POSIX_LOCALE 1 | |
| 194 #endif | |
| 195 | |
| 196 /* | |
| 197 WARNING! u_topNBytesOfDouble and u_bottomNBytesOfDouble | |
| 198 can't be properly optimized by the gcc compiler sometimes (i.e. gcc 3.2). | |
| 199 */ | |
| 200 #if !IEEE_754 | |
| 201 static char* | |
| 202 u_topNBytesOfDouble(double* d, int n) | |
| 203 { | |
| 204 #if U_IS_BIG_ENDIAN | |
| 205 return (char*)d; | |
| 206 #else | |
| 207 return (char*)(d + 1) - n; | |
| 208 #endif | |
| 209 } | |
| 210 | |
| 211 static char* | |
| 212 u_bottomNBytesOfDouble(double* d, int n) | |
| 213 { | |
| 214 #if U_IS_BIG_ENDIAN | |
| 215 return (char*)(d + 1) - n; | |
| 216 #else | |
| 217 return (char*)d; | |
| 218 #endif | |
| 219 } | |
| 220 #endif /* !IEEE_754 */ | |
| 221 | |
| 222 #if IEEE_754 | |
| 223 static UBool | |
| 224 u_signBit(double d) { | |
| 225 uint8_t hiByte; | |
| 226 #if U_IS_BIG_ENDIAN | |
| 227 hiByte = *(uint8_t *)&d; | |
| 228 #else | |
| 229 hiByte = *(((uint8_t *)&d) + sizeof(double) - 1); | |
| 230 #endif | |
| 231 return (hiByte & 0x80) != 0; | |
| 232 } | |
| 233 #endif | |
| 234 | |
| 235 | |
| 236 | |
| 237 #if defined (U_DEBUG_FAKETIME) | |
| 238 /* Override the clock to test things without having to move the system clock. | |
| 239 * Assumes POSIX gettimeofday() will function | |
| 240 */ | |
| 241 UDate fakeClock_t0 = 0; /** Time to start the clock from **/ | |
| 242 UDate fakeClock_dt = 0; /** Offset (fake time - real time) **/ | |
| 243 UBool fakeClock_set = FALSE; /** True if fake clock has spun up **/ | |
| 244 static UMutex fakeClockMutex = U_MUTEX_INTIALIZER; | |
| 245 | |
| 246 static UDate getUTCtime_real() { | |
| 247 struct timeval posixTime; | |
| 248 gettimeofday(&posixTime, NULL); | |
| 249 return (UDate)(((int64_t)posixTime.tv_sec * U_MILLIS_PER_SECOND) + (posixTime.tv_usec/1000)); | |
| 250 } | |
| 251 | |
| 252 static UDate getUTCtime_fake() { | |
| 253 umtx_lock(&fakeClockMutex); | |
| 254 if(!fakeClock_set) { | |
| 255 UDate real = getUTCtime_real(); | |
| 256 const char *fake_start = getenv("U_FAKETIME_START"); | |
| 257 if((fake_start!=NULL) && (fake_start[0]!=0)) { | |
| 258 sscanf(fake_start,"%lf",&fakeClock_t0); | |
| 259 fakeClock_dt = fakeClock_t0 - real; | |
| 260 fprintf(stderr,"U_DEBUG_FAKETIME was set at compile time, so the ICU clock will start at a preset value\n" | |
| 261 "env variable U_FAKETIME_START=%.0f (%s) for an offset of %.0f ms from the current time %.0f\n", | |
| 262 fakeClock_t0, fake_start, fakeClock_dt, real); | |
| 263 } else { | |
| 264 fakeClock_dt = 0; | |
| 265 fprintf(stderr,"U_DEBUG_FAKETIME was set at compile time, but U_FAKETIME_START was not set.\n" | |
| 266 "Set U_FAKETIME_START to the number of milliseconds since 1/1/1970 to set the ICU clock.\n"); | |
| 267 } | |
| 268 fakeClock_set = TRUE; | |
| 269 } | |
| 270 umtx_unlock(&fakeClockMutex); | |
| 271 | |
| 272 return getUTCtime_real() + fakeClock_dt; | |
| 273 } | |
| 274 #endif | |
| 275 | |
| 276 #if U_PLATFORM_USES_ONLY_WIN32_API | |
| 277 typedef union { | |
| 278 int64_t int64; | |
| 279 FILETIME fileTime; | |
| 280 } FileTimeConversion; /* This is like a ULARGE_INTEGER */ | |
| 281 | |
| 282 /* Number of 100 nanoseconds from 1/1/1601 to 1/1/1970 */ | |
| 283 #define EPOCH_BIAS INT64_C(116444736000000000) | |
| 284 #define HECTONANOSECOND_PER_MILLISECOND 10000 | |
| 285 | |
| 286 #endif | |
| 287 | |
| 288 /*--------------------------------------------------------------------------- | |
| 289 Universal Implementations | |
| 290 These are designed to work on all platforms. Try these, and if they | |
| 291 don't work on your platform, then special case your platform with new | |
| 292 implementations. | |
| 293 ---------------------------------------------------------------------------*/ | |
| 294 | |
| 295 U_CAPI UDate U_EXPORT2 | |
| 296 uprv_getUTCtime() | |
| 297 { | |
| 298 #if defined(U_DEBUG_FAKETIME) | |
| 299 return getUTCtime_fake(); /* Hook for overriding the clock */ | |
| 300 #else | |
| 301 return uprv_getRawUTCtime(); | |
| 302 #endif | |
| 303 } | |
| 304 | |
| 305 /* Return UTC (GMT) time measured in milliseconds since 0:00 on 1/1/70.*/ | |
| 306 U_CAPI UDate U_EXPORT2 | |
| 307 uprv_getRawUTCtime() | |
| 308 { | |
| 309 #if U_PLATFORM == U_PF_CLASSIC_MACOS | |
| 310 time_t t, t1, t2; | |
| 311 struct tm tmrec; | |
| 312 | |
| 313 uprv_memset( &tmrec, 0, sizeof(tmrec) ); | |
| 314 tmrec.tm_year = 70; | |
| 315 tmrec.tm_mon = 0; | |
| 316 tmrec.tm_mday = 1; | |
| 317 t1 = mktime(&tmrec); /* seconds of 1/1/1970*/ | |
| 318 | |
| 319 time(&t); | |
| 320 uprv_memcpy( &tmrec, gmtime(&t), sizeof(tmrec) ); | |
| 321 t2 = mktime(&tmrec); /* seconds of current GMT*/ | |
| 322 return (UDate)(t2 - t1) * U_MILLIS_PER_SECOND; /* GMT (or UTC) in seconds since 1970*/ | |
| 323 #elif U_PLATFORM_USES_ONLY_WIN32_API | |
| 324 | |
| 325 FileTimeConversion winTime; | |
| 326 GetSystemTimeAsFileTime(&winTime.fileTime); | |
| 327 return (UDate)((winTime.int64 - EPOCH_BIAS) / HECTONANOSECOND_PER_MILLISECOND); | |
| 328 #else | |
| 329 | |
| 330 #if HAVE_GETTIMEOFDAY | |
| 331 struct timeval posixTime; | |
| 332 gettimeofday(&posixTime, NULL); | |
| 333 return (UDate)(((int64_t)posixTime.tv_sec * U_MILLIS_PER_SECOND) + (posixTime.tv_usec/1000)); | |
| 334 #else | |
| 335 time_t epochtime; | |
| 336 time(&epochtime); | |
| 337 return (UDate)epochtime * U_MILLIS_PER_SECOND; | |
| 338 #endif | |
| 339 | |
| 340 #endif | |
| 341 } | |
| 342 | |
| 343 /*----------------------------------------------------------------------------- | |
| 344 IEEE 754 | |
| 345 These methods detect and return NaN and infinity values for doubles | |
| 346 conforming to IEEE 754. Platforms which support this standard include X86, | |
| 347 Mac 680x0, Mac PowerPC, AIX RS/6000, and most others. | |
| 348 If this doesn't work on your platform, you have non-IEEE floating-point, and | |
| 349 will need to code your own versions. A naive implementation is to return 0.0 | |
| 350 for getNaN and getInfinity, and false for isNaN and isInfinite. | |
| 351 ---------------------------------------------------------------------------*/ | |
| 352 | |
| 353 U_CAPI UBool U_EXPORT2 | |
| 354 uprv_isNaN(double number) | |
| 355 { | |
| 356 #if IEEE_754 | |
| 357 BitPatternConversion convertedNumber; | |
| 358 convertedNumber.d64 = number; | |
| 359 /* Infinity is 0x7FF0000000000000U. Anything greater than that is a NaN */ | |
| 360 return (UBool)((convertedNumber.i64 & U_INT64_MAX) > gInf.i64); | |
| 361 | |
| 362 #elif U_PLATFORM == U_PF_OS390 | |
| 363 uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number, | |
| 364 sizeof(uint32_t)); | |
| 365 uint32_t lowBits = *(uint32_t*)u_bottomNBytesOfDouble(&number, | |
| 366 sizeof(uint32_t)); | |
| 367 | |
| 368 return ((highBits & 0x7F080000L) == 0x7F080000L) && | |
| 369 (lowBits == 0x00000000L); | |
| 370 | |
| 371 #else | |
| 372 /* If your platform doesn't support IEEE 754 but *does* have an NaN value,*/ | |
| 373 /* you'll need to replace this default implementation with what's correct*/ | |
| 374 /* for your platform.*/ | |
| 375 return number != number; | |
| 376 #endif | |
| 377 } | |
| 378 | |
| 379 U_CAPI UBool U_EXPORT2 | |
| 380 uprv_isInfinite(double number) | |
| 381 { | |
| 382 #if IEEE_754 | |
| 383 BitPatternConversion convertedNumber; | |
| 384 convertedNumber.d64 = number; | |
| 385 /* Infinity is exactly 0x7FF0000000000000U. */ | |
| 386 return (UBool)((convertedNumber.i64 & U_INT64_MAX) == gInf.i64); | |
| 387 #elif U_PLATFORM == U_PF_OS390 | |
| 388 uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number, | |
| 389 sizeof(uint32_t)); | |
| 390 uint32_t lowBits = *(uint32_t*)u_bottomNBytesOfDouble(&number, | |
| 391 sizeof(uint32_t)); | |
| 392 | |
| 393 return ((highBits & ~SIGN) == 0x70FF0000L) && (lowBits == 0x00000000L); | |
| 394 | |
| 395 #else | |
| 396 /* If your platform doesn't support IEEE 754 but *does* have an infinity*/ | |
| 397 /* value, you'll need to replace this default implementation with what's*/ | |
| 398 /* correct for your platform.*/ | |
| 399 return number == (2.0 * number); | |
| 400 #endif | |
| 401 } | |
| 402 | |
| 403 U_CAPI UBool U_EXPORT2 | |
| 404 uprv_isPositiveInfinity(double number) | |
| 405 { | |
| 406 #if IEEE_754 || U_PLATFORM == U_PF_OS390 | |
| 407 return (UBool)(number > 0 && uprv_isInfinite(number)); | |
| 408 #else | |
| 409 return uprv_isInfinite(number); | |
| 410 #endif | |
| 411 } | |
| 412 | |
| 413 U_CAPI UBool U_EXPORT2 | |
| 414 uprv_isNegativeInfinity(double number) | |
| 415 { | |
| 416 #if IEEE_754 || U_PLATFORM == U_PF_OS390 | |
| 417 return (UBool)(number < 0 && uprv_isInfinite(number)); | |
| 418 | |
| 419 #else | |
| 420 uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number, | |
| 421 sizeof(uint32_t)); | |
| 422 return((highBits & SIGN) && uprv_isInfinite(number)); | |
| 423 | |
| 424 #endif | |
| 425 } | |
| 426 | |
| 427 U_CAPI double U_EXPORT2 | |
| 428 uprv_getNaN() | |
| 429 { | |
| 430 #if IEEE_754 || U_PLATFORM == U_PF_OS390 | |
| 431 return gNan.d64; | |
| 432 #else | |
| 433 /* If your platform doesn't support IEEE 754 but *does* have an NaN value,*/ | |
| 434 /* you'll need to replace this default implementation with what's correct*/ | |
| 435 /* for your platform.*/ | |
| 436 return 0.0; | |
| 437 #endif | |
| 438 } | |
| 439 | |
| 440 U_CAPI double U_EXPORT2 | |
| 441 uprv_getInfinity() | |
| 442 { | |
| 443 #if IEEE_754 || U_PLATFORM == U_PF_OS390 | |
| 444 return gInf.d64; | |
| 445 #else | |
| 446 /* If your platform doesn't support IEEE 754 but *does* have an infinity*/ | |
| 447 /* value, you'll need to replace this default implementation with what's*/ | |
| 448 /* correct for your platform.*/ | |
| 449 return 0.0; | |
| 450 #endif | |
| 451 } | |
| 452 | |
| 453 U_CAPI double U_EXPORT2 | |
| 454 uprv_floor(double x) | |
| 455 { | |
| 456 return floor(x); | |
| 457 } | |
| 458 | |
| 459 U_CAPI double U_EXPORT2 | |
| 460 uprv_ceil(double x) | |
| 461 { | |
| 462 return ceil(x); | |
| 463 } | |
| 464 | |
| 465 U_CAPI double U_EXPORT2 | |
| 466 uprv_round(double x) | |
| 467 { | |
| 468 return uprv_floor(x + 0.5); | |
| 469 } | |
| 470 | |
| 471 U_CAPI double U_EXPORT2 | |
| 472 uprv_fabs(double x) | |
| 473 { | |
| 474 return fabs(x); | |
| 475 } | |
| 476 | |
| 477 U_CAPI double U_EXPORT2 | |
| 478 uprv_modf(double x, double* y) | |
| 479 { | |
| 480 return modf(x, y); | |
| 481 } | |
| 482 | |
| 483 U_CAPI double U_EXPORT2 | |
| 484 uprv_fmod(double x, double y) | |
| 485 { | |
| 486 return fmod(x, y); | |
| 487 } | |
| 488 | |
| 489 U_CAPI double U_EXPORT2 | |
| 490 uprv_pow(double x, double y) | |
| 491 { | |
| 492 /* This is declared as "double pow(double x, double y)" */ | |
| 493 return pow(x, y); | |
| 494 } | |
| 495 | |
| 496 U_CAPI double U_EXPORT2 | |
| 497 uprv_pow10(int32_t x) | |
| 498 { | |
| 499 return pow(10.0, (double)x); | |
| 500 } | |
| 501 | |
| 502 U_CAPI double U_EXPORT2 | |
| 503 uprv_fmax(double x, double y) | |
| 504 { | |
| 505 #if IEEE_754 | |
| 506 /* first handle NaN*/ | |
| 507 if(uprv_isNaN(x) || uprv_isNaN(y)) | |
| 508 return uprv_getNaN(); | |
| 509 | |
| 510 /* check for -0 and 0*/ | |
| 511 if(x == 0.0 && y == 0.0 && u_signBit(x)) | |
| 512 return y; | |
| 513 | |
| 514 #endif | |
| 515 | |
| 516 /* this should work for all flt point w/o NaN and Inf special cases */ | |
| 517 return (x > y ? x : y); | |
| 518 } | |
| 519 | |
| 520 U_CAPI double U_EXPORT2 | |
| 521 uprv_fmin(double x, double y) | |
| 522 { | |
| 523 #if IEEE_754 | |
| 524 /* first handle NaN*/ | |
| 525 if(uprv_isNaN(x) || uprv_isNaN(y)) | |
| 526 return uprv_getNaN(); | |
| 527 | |
| 528 /* check for -0 and 0*/ | |
| 529 if(x == 0.0 && y == 0.0 && u_signBit(y)) | |
| 530 return y; | |
| 531 | |
| 532 #endif | |
| 533 | |
| 534 /* this should work for all flt point w/o NaN and Inf special cases */ | |
| 535 return (x > y ? y : x); | |
| 536 } | |
| 537 | |
| 538 /** | |
| 539 * Truncates the given double. | |
| 540 * trunc(3.3) = 3.0, trunc (-3.3) = -3.0 | |
| 541 * This is different than calling floor() or ceil(): | |
| 542 * floor(3.3) = 3, floor(-3.3) = -4 | |
| 543 * ceil(3.3) = 4, ceil(-3.3) = -3 | |
| 544 */ | |
| 545 U_CAPI double U_EXPORT2 | |
| 546 uprv_trunc(double d) | |
| 547 { | |
| 548 #if IEEE_754 | |
| 549 /* handle error cases*/ | |
| 550 if(uprv_isNaN(d)) | |
| 551 return uprv_getNaN(); | |
| 552 if(uprv_isInfinite(d)) | |
| 553 return uprv_getInfinity(); | |
| 554 | |
| 555 if(u_signBit(d)) /* Signbit() picks up -0.0; d<0 does not. */ | |
| 556 return ceil(d); | |
| 557 else | |
| 558 return floor(d); | |
| 559 | |
| 560 #else | |
| 561 return d >= 0 ? floor(d) : ceil(d); | |
| 562 | |
| 563 #endif | |
| 564 } | |
| 565 | |
| 566 /** | |
| 567 * Return the largest positive number that can be represented by an integer | |
| 568 * type of arbitrary bit length. | |
| 569 */ | |
| 570 U_CAPI double U_EXPORT2 | |
| 571 uprv_maxMantissa(void) | |
| 572 { | |
| 573 return pow(2.0, DBL_MANT_DIG + 1.0) - 1.0; | |
| 574 } | |
| 575 | |
| 576 U_CAPI double U_EXPORT2 | |
| 577 uprv_log(double d) | |
| 578 { | |
| 579 return log(d); | |
| 580 } | |
| 581 | |
| 582 U_CAPI void * U_EXPORT2 | |
| 583 uprv_maximumPtr(void * base) | |
| 584 { | |
| 585 #if U_PLATFORM == U_PF_OS400 | |
| 586 /* | |
| 587 * With the provided function we should never be out of range of a given segment | |
| 588 * (a traditional/typical segment that is). Our segments have 5 bytes for the | |
| 589 * id and 3 bytes for the offset. The key is that the casting takes care of | |
| 590 * only retrieving the offset portion minus x1000. Hence, the smallest offset | |
| 591 * seen in a program is x001000 and when casted to an int would be 0. | |
| 592 * That's why we can only add 0xffefff. Otherwise, we would exceed the segment. | |
| 593 * | |
| 594 * Currently, 16MB is the current addressing limitation on i5/OS if the activation is | |
| 595 * non-TERASPACE. If it is TERASPACE it is 2GB - 4k(header information). | |
| 596 * This function determines the activation based on the pointer that is passed in and | |
| 597 * calculates the appropriate maximum available size for | |
| 598 * each pointer type (TERASPACE and non-TERASPACE) | |
| 599 * | |
| 600 * Unlike other operating systems, the pointer model isn't determined at | |
| 601 * compile time on i5/OS. | |
| 602 */ | |
| 603 if ((base != NULL) && (_TESTPTR(base, _C_TERASPACE_CHECK))) { | |
| 604 /* if it is a TERASPACE pointer the max is 2GB - 4k */ | |
| 605 return ((void *)(((char *)base)-((uint32_t)(base))+((uint32_t)0x7fffefff))); | |
| 606 } | |
| 607 /* otherwise 16MB since NULL ptr is not checkable or the ptr is not TERASPACE */ | |
| 608 return ((void *)(((char *)base)-((uint32_t)(base))+((uint32_t)0xffefff))); | |
| 609 | |
| 610 #else | |
| 611 return U_MAX_PTR(base); | |
| 612 #endif | |
| 613 } | |
| 614 | |
| 615 /*--------------------------------------------------------------------------- | |
| 616 Platform-specific Implementations | |
| 617 Try these, and if they don't work on your platform, then special case your | |
| 618 platform with new implementations. | |
| 619 ---------------------------------------------------------------------------*/ | |
| 620 | |
| 621 /* Generic time zone layer -------------------------------------------------- */ | |
| 622 | |
| 623 /* Time zone utilities */ | |
| 624 U_CAPI void U_EXPORT2 | |
| 625 uprv_tzset() | |
| 626 { | |
| 627 #if defined(U_TZSET) | |
| 628 U_TZSET(); | |
| 629 #else | |
| 630 /* no initialization*/ | |
| 631 #endif | |
| 632 } | |
| 633 | |
| 634 U_CAPI int32_t U_EXPORT2 | |
| 635 uprv_timezone() | |
| 636 { | |
| 637 #ifdef U_TIMEZONE | |
| 638 return U_TIMEZONE; | |
| 639 #else | |
| 640 time_t t, t1, t2; | |
| 641 struct tm tmrec; | |
| 642 int32_t tdiff = 0; | |
| 643 | |
| 644 time(&t); | |
| 645 uprv_memcpy( &tmrec, localtime(&t), sizeof(tmrec) ); | |
| 646 #if U_PLATFORM != U_PF_IPHONE | |
| 647 UBool dst_checked = (tmrec.tm_isdst != 0); /* daylight savings time is checked*/ | |
| 648 #endif | |
| 649 t1 = mktime(&tmrec); /* local time in seconds*/ | |
| 650 uprv_memcpy( &tmrec, gmtime(&t), sizeof(tmrec) ); | |
| 651 t2 = mktime(&tmrec); /* GMT (or UTC) in seconds*/ | |
| 652 tdiff = t2 - t1; | |
| 653 | |
| 654 #if U_PLATFORM != U_PF_IPHONE | |
| 655 /* imitate NT behaviour, which returns same timezone offset to GMT for | |
| 656 winter and summer. | |
| 657 This does not work on all platforms. For instance, on glibc on Linux | |
| 658 and on Mac OS 10.5, tdiff calculated above remains the same | |
| 659 regardless of whether DST is in effect or not. iOS is another | |
| 660 platform where this does not work. Linux + glibc and Mac OS 10.5 | |
| 661 have U_TIMEZONE defined so that this code is not reached. | |
| 662 */ | |
| 663 if (dst_checked) | |
| 664 tdiff += 3600; | |
| 665 #endif | |
| 666 return tdiff; | |
| 667 #endif | |
| 668 } | |
| 669 | |
| 670 /* Note that U_TZNAME does *not* have to be tzname, but if it is, | |
| 671 some platforms need to have it declared here. */ | |
| 672 | |
| 673 #if defined(U_TZNAME) && (U_PLATFORM == U_PF_IRIX || U_PLATFORM_IS_DARWIN_BASED || (U_PLATFORM == U_PF_CYGWIN && !U_PLATFORM_USES_ONLY_WIN32_API)) | |
| 674 /* RS6000 and others reject char **tzname. */ | |
| 675 extern U_IMPORT char *U_TZNAME[]; | |
| 676 #endif | |
| 677 | |
| 678 #if !UCONFIG_NO_FILE_IO && ((U_PLATFORM_IS_DARWIN_BASED && (U_PLATFORM != U_PF_IPHONE || defined(U_TIMEZONE))) || U_PLATFORM_IS_LINUX_BASED || U_PLATFORM == U_PF_BSD || U_PLATFORM == U_PF_SOLARIS) | |
| 679 /* These platforms are likely to use Olson timezone IDs. */ | |
| 680 #define CHECK_LOCALTIME_LINK 1 | |
| 681 #if U_PLATFORM_IS_DARWIN_BASED | |
| 682 #include <tzfile.h> | |
| 683 #define TZZONEINFO (TZDIR "/") | |
| 684 #elif U_PLATFORM == U_PF_SOLARIS | |
| 685 #define TZDEFAULT "/etc/localtime" | |
| 686 #define TZZONEINFO "/usr/share/lib/zoneinfo/" | |
| 687 #define TZZONEINFO2 "../usr/share/lib/zoneinfo/" | |
| 688 #define TZ_ENV_CHECK "localtime" | |
| 689 #else | |
| 690 #define TZDEFAULT "/etc/localtime" | |
| 691 #define TZZONEINFO "/usr/share/zoneinfo/" | |
| 692 #endif | |
| 693 #if U_HAVE_DIRENT_H | |
| 694 #define TZFILE_SKIP "posixrules" /* tz file to skip when searching. */ | |
| 695 /* Some Linux distributions have 'localtime' in /usr/share/zoneinfo | |
| 696 symlinked to /etc/localtime, which makes searchForTZFile return | |
| 697 'localtime' when it's the first match. */ | |
| 698 #define TZFILE_SKIP2 "localtime" | |
| 699 #define SEARCH_TZFILE | |
| 700 #include <dirent.h> /* Needed to search through system timezone files */ | |
| 701 #endif | |
| 702 static char gTimeZoneBuffer[PATH_MAX]; | |
| 703 static char *gTimeZoneBufferPtr = NULL; | |
| 704 #endif | |
| 705 | |
| 706 #if !U_PLATFORM_USES_ONLY_WIN32_API | |
| 707 #define isNonDigit(ch) (ch < '0' || '9' < ch) | |
| 708 static UBool isValidOlsonID(const char *id) { | |
| 709 int32_t idx = 0; | |
| 710 | |
| 711 /* Determine if this is something like Iceland (Olson ID) | |
| 712 or AST4ADT (non-Olson ID) */ | |
| 713 while (id[idx] && isNonDigit(id[idx]) && id[idx] != ',') { | |
| 714 idx++; | |
| 715 } | |
| 716 | |
| 717 /* If we went through the whole string, then it might be okay. | |
| 718 The timezone is sometimes set to "CST-7CDT", "CST6CDT5,J129,J131/19:30", | |
| 719 "GRNLNDST3GRNLNDDT" or similar, so we cannot use it. | |
| 720 The rest of the time it could be an Olson ID. George */ | |
| 721 return (UBool)(id[idx] == 0 | |
| 722 || uprv_strcmp(id, "PST8PDT") == 0 | |
| 723 || uprv_strcmp(id, "MST7MDT") == 0 | |
| 724 || uprv_strcmp(id, "CST6CDT") == 0 | |
| 725 || uprv_strcmp(id, "EST5EDT") == 0); | |
| 726 } | |
| 727 | |
| 728 /* On some Unix-like OS, 'posix' subdirectory in | |
| 729 /usr/share/zoneinfo replicates the top-level contents. 'right' | |
| 730 subdirectory has the same set of files, but individual files | |
| 731 are different from those in the top-level directory or 'posix' | |
| 732 because 'right' has files for TAI (Int'l Atomic Time) while 'posix' | |
| 733 has files for UTC. | |
| 734 When the first match for /etc/localtime is in either of them | |
| 735 (usually in posix because 'right' has different file contents), | |
| 736 or TZ environment variable points to one of them, createTimeZone | |
| 737 fails because, say, 'posix/America/New_York' is not an Olson | |
| 738 timezone id ('America/New_York' is). So, we have to skip | |
| 739 'posix/' and 'right/' at the beginning. */ | |
| 740 static void skipZoneIDPrefix(const char** id) { | |
| 741 if (uprv_strncmp(*id, "posix/", 6) == 0 | |
| 742 || uprv_strncmp(*id, "right/", 6) == 0) | |
| 743 { | |
| 744 *id += 6; | |
| 745 } | |
| 746 } | |
| 747 #endif | |
| 748 | |
| 749 #if defined(U_TZNAME) && !U_PLATFORM_USES_ONLY_WIN32_API | |
| 750 | |
| 751 #define CONVERT_HOURS_TO_SECONDS(offset) (int32_t)(offset*3600) | |
| 752 typedef struct OffsetZoneMapping { | |
| 753 int32_t offsetSeconds; | |
| 754 int32_t daylightType; /* 0=U_DAYLIGHT_NONE, 1=daylight in June-U_DAYLIGHT_JUNE, 2=daylight in December=U_DAYLIGHT_DECEMBER*/ | |
| 755 const char *stdID; | |
| 756 const char *dstID; | |
| 757 const char *olsonID; | |
| 758 } OffsetZoneMapping; | |
| 759 | |
| 760 enum { U_DAYLIGHT_NONE=0,U_DAYLIGHT_JUNE=1,U_DAYLIGHT_DECEMBER=2 }; | |
| 761 | |
| 762 /* | |
| 763 This list tries to disambiguate a set of abbreviated timezone IDs and offsets | |
| 764 and maps it to an Olson ID. | |
| 765 Before adding anything to this list, take a look at | |
| 766 icu/source/tools/tzcode/tz.alias | |
| 767 Sometimes no daylight savings (0) is important to define due to aliases. | |
| 768 This list can be tested with icu/source/test/compat/tzone.pl | |
| 769 More values could be added to daylightType to increase precision. | |
| 770 */ | |
| 771 static const struct OffsetZoneMapping OFFSET_ZONE_MAPPINGS[] = { | |
| 772 {-45900, 2, "CHAST", "CHADT", "Pacific/Chatham"}, | |
| 773 {-43200, 1, "PETT", "PETST", "Asia/Kamchatka"}, | |
| 774 {-43200, 2, "NZST", "NZDT", "Pacific/Auckland"}, | |
| 775 {-43200, 1, "ANAT", "ANAST", "Asia/Anadyr"}, | |
| 776 {-39600, 1, "MAGT", "MAGST", "Asia/Magadan"}, | |
| 777 {-37800, 2, "LHST", "LHST", "Australia/Lord_Howe"}, | |
| 778 {-36000, 2, "EST", "EST", "Australia/Sydney"}, | |
| 779 {-36000, 1, "SAKT", "SAKST", "Asia/Sakhalin"}, | |
| 780 {-36000, 1, "VLAT", "VLAST", "Asia/Vladivostok"}, | |
| 781 {-34200, 2, "CST", "CST", "Australia/South"}, | |
| 782 {-32400, 1, "YAKT", "YAKST", "Asia/Yakutsk"}, | |
| 783 {-32400, 1, "CHOT", "CHOST", "Asia/Choibalsan"}, | |
| 784 {-31500, 2, "CWST", "CWST", "Australia/Eucla"}, | |
| 785 {-28800, 1, "IRKT", "IRKST", "Asia/Irkutsk"}, | |
| 786 {-28800, 1, "ULAT", "ULAST", "Asia/Ulaanbaatar"}, | |
| 787 {-28800, 2, "WST", "WST", "Australia/West"}, | |
| 788 {-25200, 1, "HOVT", "HOVST", "Asia/Hovd"}, | |
| 789 {-25200, 1, "KRAT", "KRAST", "Asia/Krasnoyarsk"}, | |
| 790 {-21600, 1, "NOVT", "NOVST", "Asia/Novosibirsk"}, | |
| 791 {-21600, 1, "OMST", "OMSST", "Asia/Omsk"}, | |
| 792 {-18000, 1, "YEKT", "YEKST", "Asia/Yekaterinburg"}, | |
| 793 {-14400, 1, "SAMT", "SAMST", "Europe/Samara"}, | |
| 794 {-14400, 1, "AMT", "AMST", "Asia/Yerevan"}, | |
| 795 {-14400, 1, "AZT", "AZST", "Asia/Baku"}, | |
| 796 {-10800, 1, "AST", "ADT", "Asia/Baghdad"}, | |
| 797 {-10800, 1, "MSK", "MSD", "Europe/Moscow"}, | |
| 798 {-10800, 1, "VOLT", "VOLST", "Europe/Volgograd"}, | |
| 799 {-7200, 0, "EET", "CEST", "Africa/Tripoli"}, | |
| 800 {-7200, 1, "EET", "EEST", "Europe/Athens"}, /* Conflicts with Africa/Cairo */ | |
| 801 {-7200, 1, "IST", "IDT", "Asia/Jerusalem"}, | |
| 802 {-3600, 0, "CET", "WEST", "Africa/Algiers"}, | |
| 803 {-3600, 2, "WAT", "WAST", "Africa/Windhoek"}, | |
| 804 {0, 1, "GMT", "IST", "Europe/Dublin"}, | |
| 805 {0, 1, "GMT", "BST", "Europe/London"}, | |
| 806 {0, 0, "WET", "WEST", "Africa/Casablanca"}, | |
| 807 {0, 0, "WET", "WET", "Africa/El_Aaiun"}, | |
| 808 {3600, 1, "AZOT", "AZOST", "Atlantic/Azores"}, | |
| 809 {3600, 1, "EGT", "EGST", "America/Scoresbysund"}, | |
| 810 {10800, 1, "PMST", "PMDT", "America/Miquelon"}, | |
| 811 {10800, 2, "UYT", "UYST", "America/Montevideo"}, | |
| 812 {10800, 1, "WGT", "WGST", "America/Godthab"}, | |
| 813 {10800, 2, "BRT", "BRST", "Brazil/East"}, | |
| 814 {12600, 1, "NST", "NDT", "America/St_Johns"}, | |
| 815 {14400, 1, "AST", "ADT", "Canada/Atlantic"}, | |
| 816 {14400, 2, "AMT", "AMST", "America/Cuiaba"}, | |
| 817 {14400, 2, "CLT", "CLST", "Chile/Continental"}, | |
| 818 {14400, 2, "FKT", "FKST", "Atlantic/Stanley"}, | |
| 819 {14400, 2, "PYT", "PYST", "America/Asuncion"}, | |
| 820 {18000, 1, "CST", "CDT", "America/Havana"}, | |
| 821 {18000, 1, "EST", "EDT", "US/Eastern"}, /* Conflicts with America/Grand_Turk */ | |
| 822 {21600, 2, "EAST", "EASST", "Chile/EasterIsland"}, | |
| 823 {21600, 0, "CST", "MDT", "Canada/Saskatchewan"}, | |
| 824 {21600, 0, "CST", "CDT", "America/Guatemala"}, | |
| 825 {21600, 1, "CST", "CDT", "US/Central"}, /* Conflicts with Mexico/General */ | |
| 826 {25200, 1, "MST", "MDT", "US/Mountain"}, /* Conflicts with Mexico/BajaSur */ | |
| 827 {28800, 0, "PST", "PST", "Pacific/Pitcairn"}, | |
| 828 {28800, 1, "PST", "PDT", "US/Pacific"}, /* Conflicts with Mexico/BajaNorte */ | |
| 829 {32400, 1, "AKST", "AKDT", "US/Alaska"}, | |
| 830 {36000, 1, "HAST", "HADT", "US/Aleutian"} | |
| 831 }; | |
| 832 | |
| 833 /*#define DEBUG_TZNAME*/ | |
| 834 | |
| 835 static const char* remapShortTimeZone(const char *stdID, const char *dstID, int32_t daylightType, int32_t offset) | |
| 836 { | |
| 837 int32_t idx; | |
| 838 #ifdef DEBUG_TZNAME | |
| 839 fprintf(stderr, "TZ=%s std=%s dst=%s daylight=%d offset=%d\n", getenv("TZ"), stdID, dstID, daylightType, offset); | |
| 840 #endif | |
| 841 for (idx = 0; idx < LENGTHOF(OFFSET_ZONE_MAPPINGS); idx++) | |
| 842 { | |
| 843 if (offset == OFFSET_ZONE_MAPPINGS[idx].offsetSeconds | |
| 844 && daylightType == OFFSET_ZONE_MAPPINGS[idx].daylightType | |
| 845 && strcmp(OFFSET_ZONE_MAPPINGS[idx].stdID, stdID) == 0 | |
| 846 && strcmp(OFFSET_ZONE_MAPPINGS[idx].dstID, dstID) == 0) | |
| 847 { | |
| 848 return OFFSET_ZONE_MAPPINGS[idx].olsonID; | |
| 849 } | |
| 850 } | |
| 851 return NULL; | |
| 852 } | |
| 853 #endif | |
| 854 | |
| 855 #ifdef SEARCH_TZFILE | |
| 856 #define MAX_PATH_SIZE PATH_MAX /* Set the limit for the size of the path. */ | |
| 857 #define MAX_READ_SIZE 512 | |
| 858 | |
| 859 typedef struct DefaultTZInfo { | |
| 860 char* defaultTZBuffer; | |
| 861 int64_t defaultTZFileSize; | |
| 862 FILE* defaultTZFilePtr; | |
| 863 UBool defaultTZstatus; | |
| 864 int32_t defaultTZPosition; | |
| 865 } DefaultTZInfo; | |
| 866 | |
| 867 /* | |
| 868 * This method compares the two files given to see if they are a match. | |
| 869 * It is currently use to compare two TZ files. | |
| 870 */ | |
| 871 static UBool compareBinaryFiles(const char* defaultTZFileName, const char* TZFileName, DefaultTZInfo* tzInfo) { | |
| 872 FILE* file; | |
| 873 int64_t sizeFile; | |
| 874 int64_t sizeFileLeft; | |
| 875 int32_t sizeFileRead; | |
| 876 int32_t sizeFileToRead; | |
| 877 char bufferFile[MAX_READ_SIZE]; | |
| 878 UBool result = TRUE; | |
| 879 | |
| 880 if (tzInfo->defaultTZFilePtr == NULL) { | |
| 881 tzInfo->defaultTZFilePtr = fopen(defaultTZFileName, "r"); | |
| 882 } | |
| 883 file = fopen(TZFileName, "r"); | |
| 884 | |
| 885 tzInfo->defaultTZPosition = 0; /* reset position to begin search */ | |
| 886 | |
| 887 if (file != NULL && tzInfo->defaultTZFilePtr != NULL) { | |
| 888 /* First check that the file size are equal. */ | |
| 889 if (tzInfo->defaultTZFileSize == 0) { | |
| 890 fseek(tzInfo->defaultTZFilePtr, 0, SEEK_END); | |
| 891 tzInfo->defaultTZFileSize = ftell(tzInfo->defaultTZFilePtr); | |
| 892 } | |
| 893 fseek(file, 0, SEEK_END); | |
| 894 sizeFile = ftell(file); | |
| 895 sizeFileLeft = sizeFile; | |
| 896 | |
| 897 if (sizeFile != tzInfo->defaultTZFileSize) { | |
| 898 result = FALSE; | |
| 899 } else { | |
| 900 /* Store the data from the files in seperate buffers and | |
| 901 * compare each byte to determine equality. | |
| 902 */ | |
| 903 if (tzInfo->defaultTZBuffer == NULL) { | |
| 904 rewind(tzInfo->defaultTZFilePtr); | |
| 905 tzInfo->defaultTZBuffer = (char*)uprv_malloc(sizeof(char) * tzInfo->defaultTZFileSize); | |
| 906 sizeFileRead = fread(tzInfo->defaultTZBuffer, 1, tzInfo->defaultTZFileSize, tzInfo->defaultTZFilePtr); | |
| 907 } | |
| 908 rewind(file); | |
| 909 while(sizeFileLeft > 0) { | |
| 910 uprv_memset(bufferFile, 0, MAX_READ_SIZE); | |
| 911 sizeFileToRead = sizeFileLeft < MAX_READ_SIZE ? sizeFileLeft : MAX_READ_SIZE; | |
| 912 | |
| 913 sizeFileRead = fread(bufferFile, 1, sizeFileToRead, file); | |
| 914 if (memcmp(tzInfo->defaultTZBuffer + tzInfo->defaultTZPosition, bufferFile, sizeFileRead) != 0) { | |
| 915 result = FALSE; | |
| 916 break; | |
| 917 } | |
| 918 sizeFileLeft -= sizeFileRead; | |
| 919 tzInfo->defaultTZPosition += sizeFileRead; | |
| 920 } | |
| 921 } | |
| 922 } else { | |
| 923 result = FALSE; | |
| 924 } | |
| 925 | |
| 926 if (file != NULL) { | |
| 927 fclose(file); | |
| 928 } | |
| 929 | |
| 930 return result; | |
| 931 } | |
| 932 /* | |
| 933 * This method recursively traverses the directory given for a matching TZ file and returns the first match. | |
| 934 */ | |
| 935 /* dirent also lists two entries: "." and ".." that we can safely ignore. */ | |
| 936 #define SKIP1 "." | |
| 937 #define SKIP2 ".." | |
| 938 static char SEARCH_TZFILE_RESULT[MAX_PATH_SIZE] = ""; | |
| 939 static char* searchForTZFile(const char* path, DefaultTZInfo* tzInfo) { | |
| 940 char curpath[MAX_PATH_SIZE]; | |
| 941 DIR* dirp = opendir(path); | |
| 942 DIR* subDirp = NULL; | |
| 943 struct dirent* dirEntry = NULL; | |
| 944 | |
| 945 char* result = NULL; | |
| 946 if (dirp == NULL) { | |
| 947 return result; | |
| 948 } | |
| 949 | |
| 950 /* Save the current path */ | |
| 951 uprv_memset(curpath, 0, MAX_PATH_SIZE); | |
| 952 uprv_strcpy(curpath, path); | |
| 953 | |
| 954 /* Check each entry in the directory. */ | |
| 955 while((dirEntry = readdir(dirp)) != NULL) { | |
| 956 const char* dirName = dirEntry->d_name; | |
| 957 if (uprv_strcmp(dirName, SKIP1) != 0 && uprv_strcmp(dirName, SKIP2) != 0) { | |
| 958 /* Create a newpath with the new entry to test each entry in the directory. */ | |
| 959 char newpath[MAX_PATH_SIZE]; | |
| 960 uprv_strcpy(newpath, curpath); | |
| 961 uprv_strcat(newpath, dirName); | |
| 962 | |
| 963 if ((subDirp = opendir(newpath)) != NULL) { | |
| 964 /* If this new path is a directory, make a recursive call with the newpath. */ | |
| 965 closedir(subDirp); | |
| 966 uprv_strcat(newpath, "/"); | |
| 967 result = searchForTZFile(newpath, tzInfo); | |
| 968 /* | |
| 969 Have to get out here. Otherwise, we'd keep looking | |
| 970 and return the first match in the top-level directory | |
| 971 if there's a match in the top-level. If not, this function | |
| 972 would return NULL and set gTimeZoneBufferPtr to NULL in initDefault(). | |
| 973 It worked without this in most cases because we have a fallback of calling | |
| 974 localtime_r to figure out the default timezone. | |
| 975 */ | |
| 976 if (result != NULL) | |
| 977 break; | |
| 978 } else if (uprv_strcmp(TZFILE_SKIP, dirName) != 0 && uprv_strcmp(TZFILE_SKIP2, dirName) != 0) { | |
| 979 if(compareBinaryFiles(TZDEFAULT, newpath, tzInfo)) { | |
| 980 const char* zoneid = newpath + (sizeof(TZZONEINFO)) - 1; | |
| 981 skipZoneIDPrefix(&zoneid); | |
| 982 uprv_strcpy(SEARCH_TZFILE_RESULT, zoneid); | |
| 983 result = SEARCH_TZFILE_RESULT; | |
| 984 /* Get out after the first one found. */ | |
| 985 break; | |
| 986 } | |
| 987 } | |
| 988 } | |
| 989 } | |
| 990 closedir(dirp); | |
| 991 return result; | |
| 992 } | |
| 993 #endif | |
| 994 U_CAPI const char* U_EXPORT2 | |
| 995 uprv_tzname(int n) | |
| 996 { | |
| 997 const char *tzid = NULL; | |
| 998 #if U_PLATFORM_USES_ONLY_WIN32_API | |
| 999 tzid = uprv_detectWindowsTimeZone(); | |
| 1000 | |
| 1001 if (tzid != NULL) { | |
| 1002 return tzid; | |
| 1003 } | |
| 1004 #else | |
| 1005 | |
| 1006 /*#if U_PLATFORM_IS_DARWIN_BASED | |
| 1007 int ret; | |
| 1008 | |
| 1009 tzid = getenv("TZFILE"); | |
| 1010 if (tzid != NULL) { | |
| 1011 return tzid; | |
| 1012 } | |
| 1013 #endif*/ | |
| 1014 | |
| 1015 /* This code can be temporarily disabled to test tzname resolution later on. */ | |
| 1016 #ifndef DEBUG_TZNAME | |
| 1017 tzid = getenv("TZ"); | |
| 1018 if (tzid != NULL && isValidOlsonID(tzid) | |
| 1019 #if U_PLATFORM == U_PF_SOLARIS | |
| 1020 /* When TZ equals localtime on Solaris, check the /etc/localtime file. */ | |
| 1021 && uprv_strcmp(tzid, TZ_ENV_CHECK) != 0 | |
| 1022 #endif | |
| 1023 ) { | |
| 1024 /* This might be a good Olson ID. */ | |
| 1025 skipZoneIDPrefix(&tzid); | |
| 1026 return tzid; | |
| 1027 } | |
| 1028 /* else U_TZNAME will give a better result. */ | |
| 1029 #endif | |
| 1030 | |
| 1031 #if defined(CHECK_LOCALTIME_LINK) && !defined(DEBUG_SKIP_LOCALTIME_LINK) | |
| 1032 /* Caller must handle threading issues */ | |
| 1033 if (gTimeZoneBufferPtr == NULL) { | |
| 1034 /* | |
| 1035 This is a trick to look at the name of the link to get the Olson ID | |
| 1036 because the tzfile contents is underspecified. | |
| 1037 This isn't guaranteed to work because it may not be a symlink. | |
| 1038 */ | |
| 1039 int32_t ret = (int32_t)readlink(TZDEFAULT, gTimeZoneBuffer, sizeof(gTimeZoneBuffer)); | |
| 1040 if (0 < ret) { | |
| 1041 int32_t tzZoneInfoLen = uprv_strlen(TZZONEINFO); | |
| 1042 gTimeZoneBuffer[ret] = 0; | |
| 1043 if (uprv_strncmp(gTimeZoneBuffer, TZZONEINFO, tzZoneInfoLen) == 0 | |
| 1044 && isValidOlsonID(gTimeZoneBuffer + tzZoneInfoLen)) | |
| 1045 { | |
| 1046 return (gTimeZoneBufferPtr = gTimeZoneBuffer + tzZoneInfoLen); | |
| 1047 } | |
| 1048 #if U_PLATFORM == U_PF_SOLARIS | |
| 1049 else | |
| 1050 { | |
| 1051 tzZoneInfoLen = uprv_strlen(TZZONEINFO2); | |
| 1052 if (uprv_strncmp(gTimeZoneBuffer, TZZONEINFO2, tzZoneInfoLen) == 0 | |
| 1053 && isValidOlsonID(gTimeZoneBuffer + tzZoneInfoLen)) | |
| 1054 { | |
| 1055 return (gTimeZoneBufferPtr = gTimeZoneBuffer + tzZoneInfoLen); | |
| 1056 } | |
| 1057 } | |
| 1058 #endif | |
| 1059 } else { | |
| 1060 #if defined(SEARCH_TZFILE) | |
| 1061 DefaultTZInfo* tzInfo = (DefaultTZInfo*)uprv_malloc(sizeof(DefaultTZInfo)); | |
| 1062 if (tzInfo != NULL) { | |
| 1063 tzInfo->defaultTZBuffer = NULL; | |
| 1064 tzInfo->defaultTZFileSize = 0; | |
| 1065 tzInfo->defaultTZFilePtr = NULL; | |
| 1066 tzInfo->defaultTZstatus = FALSE; | |
| 1067 tzInfo->defaultTZPosition = 0; | |
| 1068 | |
| 1069 gTimeZoneBufferPtr = searchForTZFile(TZZONEINFO, tzInfo); | |
| 1070 | |
| 1071 /* Free previously allocated memory */ | |
| 1072 if (tzInfo->defaultTZBuffer != NULL) { | |
| 1073 uprv_free(tzInfo->defaultTZBuffer); | |
| 1074 } | |
| 1075 if (tzInfo->defaultTZFilePtr != NULL) { | |
| 1076 fclose(tzInfo->defaultTZFilePtr); | |
| 1077 } | |
| 1078 uprv_free(tzInfo); | |
| 1079 } | |
| 1080 | |
| 1081 if (gTimeZoneBufferPtr != NULL && isValidOlsonID(gTimeZoneBufferPtr)) { | |
| 1082 return gTimeZoneBufferPtr; | |
| 1083 } | |
| 1084 #endif | |
| 1085 } | |
| 1086 } | |
| 1087 else { | |
| 1088 return gTimeZoneBufferPtr; | |
| 1089 } | |
| 1090 #endif | |
| 1091 #endif | |
| 1092 | |
| 1093 #ifdef U_TZNAME | |
| 1094 #if U_PLATFORM_USES_ONLY_WIN32_API | |
| 1095 /* The return value is free'd in timezone.cpp on Windows because | |
| 1096 * the other code path returns a pointer to a heap location. */ | |
| 1097 return uprv_strdup(U_TZNAME[n]); | |
| 1098 #else | |
| 1099 /* | |
| 1100 U_TZNAME is usually a non-unique abbreviation, which isn't normally usable. | |
| 1101 So we remap the abbreviation to an olson ID. | |
| 1102 | |
| 1103 Since Windows exposes a little more timezone information, | |
| 1104 we normally don't use this code on Windows because | |
| 1105 uprv_detectWindowsTimeZone should have already given the correct answer. | |
| 1106 */ | |
| 1107 { | |
| 1108 struct tm juneSol, decemberSol; | |
| 1109 int daylightType; | |
| 1110 static const time_t juneSolstice=1182478260; /*2007-06-21 18:11 UT*/ | |
| 1111 static const time_t decemberSolstice=1198332540; /*2007-12-22 06:09 UT*/ | |
| 1112 | |
| 1113 /* This probing will tell us when daylight savings occurs. */ | |
| 1114 localtime_r(&juneSolstice, &juneSol); | |
| 1115 localtime_r(&decemberSolstice, &decemberSol); | |
| 1116 if(decemberSol.tm_isdst > 0) { | |
| 1117 daylightType = U_DAYLIGHT_DECEMBER; | |
| 1118 } else if(juneSol.tm_isdst > 0) { | |
| 1119 daylightType = U_DAYLIGHT_JUNE; | |
| 1120 } else { | |
| 1121 daylightType = U_DAYLIGHT_NONE; | |
| 1122 } | |
| 1123 tzid = remapShortTimeZone(U_TZNAME[0], U_TZNAME[1], daylightType, uprv_timezone()); | |
| 1124 if (tzid != NULL) { | |
| 1125 return tzid; | |
| 1126 } | |
| 1127 } | |
| 1128 return U_TZNAME[n]; | |
| 1129 #endif | |
| 1130 #else | |
| 1131 return ""; | |
| 1132 #endif | |
| 1133 } | |
| 1134 | |
| 1135 /* Get and set the ICU data directory --------------------------------------- */ | |
| 1136 | |
| 1137 static char *gDataDirectory = NULL; | |
| 1138 #if U_POSIX_LOCALE || U_PLATFORM_USES_ONLY_WIN32_API | |
| 1139 static char *gCorrectedPOSIXLocale = NULL; /* Heap allocated */ | |
| 1140 #endif | |
| 1141 | |
| 1142 static UBool U_CALLCONV putil_cleanup(void) | |
| 1143 { | |
| 1144 if (gDataDirectory && *gDataDirectory) { | |
| 1145 uprv_free(gDataDirectory); | |
| 1146 } | |
| 1147 gDataDirectory = NULL; | |
| 1148 #if U_POSIX_LOCALE || U_PLATFORM_USES_ONLY_WIN32_API | |
| 1149 if (gCorrectedPOSIXLocale) { | |
| 1150 uprv_free(gCorrectedPOSIXLocale); | |
| 1151 gCorrectedPOSIXLocale = NULL; | |
| 1152 } | |
| 1153 #endif | |
| 1154 return TRUE; | |
| 1155 } | |
| 1156 | |
| 1157 /* | |
| 1158 * Set the data directory. | |
| 1159 * Make a copy of the passed string, and set the global data dir to point to it. | |
| 1160 */ | |
| 1161 U_CAPI void U_EXPORT2 | |
| 1162 u_setDataDirectory(const char *directory) { | |
| 1163 char *newDataDir; | |
| 1164 int32_t length; | |
| 1165 | |
| 1166 if(directory==NULL || *directory==0) { | |
| 1167 /* A small optimization to prevent the malloc and copy when the | |
| 1168 shared library is used, and this is a way to make sure that NULL | |
| 1169 is never returned. | |
| 1170 */ | |
| 1171 newDataDir = (char *)""; | |
| 1172 } | |
| 1173 else { | |
| 1174 length=(int32_t)uprv_strlen(directory); | |
| 1175 newDataDir = (char *)uprv_malloc(length + 2); | |
| 1176 /* Exit out if newDataDir could not be created. */ | |
| 1177 if (newDataDir == NULL) { | |
| 1178 return; | |
| 1179 } | |
| 1180 uprv_strcpy(newDataDir, directory); | |
| 1181 | |
| 1182 #if (U_FILE_SEP_CHAR != U_FILE_ALT_SEP_CHAR) | |
| 1183 { | |
| 1184 char *p; | |
| 1185 while(p = uprv_strchr(newDataDir, U_FILE_ALT_SEP_CHAR)) { | |
| 1186 *p = U_FILE_SEP_CHAR; | |
| 1187 } | |
| 1188 } | |
| 1189 #endif | |
| 1190 } | |
| 1191 | |
| 1192 if (gDataDirectory && *gDataDirectory) { | |
| 1193 uprv_free(gDataDirectory); | |
| 1194 } | |
| 1195 gDataDirectory = newDataDir; | |
| 1196 ucln_common_registerCleanup(UCLN_COMMON_PUTIL, putil_cleanup); | |
| 1197 } | |
| 1198 | |
| 1199 U_CAPI UBool U_EXPORT2 | |
| 1200 uprv_pathIsAbsolute(const char *path) | |
| 1201 { | |
| 1202 if(!path || !*path) { | |
| 1203 return FALSE; | |
| 1204 } | |
| 1205 | |
| 1206 if(*path == U_FILE_SEP_CHAR) { | |
| 1207 return TRUE; | |
| 1208 } | |
| 1209 | |
| 1210 #if (U_FILE_SEP_CHAR != U_FILE_ALT_SEP_CHAR) | |
| 1211 if(*path == U_FILE_ALT_SEP_CHAR) { | |
| 1212 return TRUE; | |
| 1213 } | |
| 1214 #endif | |
| 1215 | |
| 1216 #if U_PLATFORM_USES_ONLY_WIN32_API | |
| 1217 if( (((path[0] >= 'A') && (path[0] <= 'Z')) || | |
| 1218 ((path[0] >= 'a') && (path[0] <= 'z'))) && | |
| 1219 path[1] == ':' ) { | |
| 1220 return TRUE; | |
| 1221 } | |
| 1222 #endif | |
| 1223 | |
| 1224 return FALSE; | |
| 1225 } | |
| 1226 | |
| 1227 /* Temporary backup setting of ICU_DATA_DIR_PREFIX_ENV_VAR | |
| 1228 until some client wrapper makefiles are updated */ | |
| 1229 #if U_PLATFORM_IS_DARWIN_BASED && TARGET_IPHONE_SIMULATOR | |
| 1230 # if !defined(ICU_DATA_DIR_PREFIX_ENV_VAR) | |
| 1231 # define ICU_DATA_DIR_PREFIX_ENV_VAR "IPHONE_SIMULATOR_ROOT" | |
| 1232 # endif | |
| 1233 #endif | |
| 1234 | |
| 1235 U_CAPI const char * U_EXPORT2 | |
| 1236 u_getDataDirectory(void) { | |
| 1237 const char *path = NULL; | |
| 1238 #if defined(ICU_DATA_DIR_PREFIX_ENV_VAR) | |
| 1239 char datadir_path_buffer[PATH_MAX]; | |
| 1240 #endif | |
| 1241 | |
| 1242 /* if we have the directory, then return it immediately */ | |
| 1243 if(gDataDirectory) { | |
| 1244 return gDataDirectory; | |
| 1245 } | |
| 1246 | |
| 1247 /* | |
| 1248 When ICU_NO_USER_DATA_OVERRIDE is defined, users aren't allowed to | |
| 1249 override ICU's data with the ICU_DATA environment variable. This prevents | |
| 1250 problems where multiple custom copies of ICU's specific version of data | |
| 1251 are installed on a system. Either the application must define the data | |
| 1252 directory with u_setDataDirectory, define ICU_DATA_DIR when compiling | |
| 1253 ICU, set the data with udata_setCommonData or trust that all of the | |
| 1254 required data is contained in ICU's data library that contains | |
| 1255 the entry point defined by U_ICUDATA_ENTRY_POINT. | |
| 1256 | |
| 1257 There may also be some platforms where environment variables | |
| 1258 are not allowed. | |
| 1259 */ | |
| 1260 # if !defined(ICU_NO_USER_DATA_OVERRIDE) && !UCONFIG_NO_FILE_IO | |
| 1261 /* First try to get the environment variable */ | |
| 1262 path=getenv("ICU_DATA"); | |
| 1263 # endif | |
| 1264 | |
| 1265 /* ICU_DATA_DIR may be set as a compile option. | |
| 1266 * U_ICU_DATA_DEFAULT_DIR is provided and is set by ICU at compile time | |
| 1267 * and is used only when data is built in archive mode eliminating the need | |
| 1268 * for ICU_DATA_DIR to be set. U_ICU_DATA_DEFAULT_DIR is set to the installation | |
| 1269 * directory of the data dat file. Users should use ICU_DATA_DIR if they want to | |
| 1270 * set their own path. | |
| 1271 */ | |
| 1272 #if defined(ICU_DATA_DIR) || defined(U_ICU_DATA_DEFAULT_DIR) | |
| 1273 if(path==NULL || *path==0) { | |
| 1274 # if defined(ICU_DATA_DIR_PREFIX_ENV_VAR) | |
| 1275 const char *prefix = getenv(ICU_DATA_DIR_PREFIX_ENV_VAR); | |
| 1276 # endif | |
| 1277 # ifdef ICU_DATA_DIR | |
| 1278 path=ICU_DATA_DIR; | |
| 1279 # else | |
| 1280 path=U_ICU_DATA_DEFAULT_DIR; | |
| 1281 # endif | |
| 1282 # if defined(ICU_DATA_DIR_PREFIX_ENV_VAR) | |
| 1283 if (prefix != NULL) { | |
| 1284 snprintf(datadir_path_buffer, PATH_MAX, "%s%s", prefix, path); | |
| 1285 path=datadir_path_buffer; | |
| 1286 } | |
| 1287 # endif | |
| 1288 } | |
| 1289 #endif | |
| 1290 | |
| 1291 if(path==NULL) { | |
| 1292 /* It looks really bad, set it to something. */ | |
| 1293 path = ""; | |
| 1294 } | |
| 1295 | |
| 1296 u_setDataDirectory(path); | |
| 1297 return gDataDirectory; | |
| 1298 } | |
| 1299 | |
| 1300 | |
| 1301 | |
| 1302 | |
| 1303 | |
| 1304 /* Macintosh-specific locale information ------------------------------------ */ | |
| 1305 #if U_PLATFORM == U_PF_CLASSIC_MACOS | |
| 1306 | |
| 1307 typedef struct { | |
| 1308 int32_t script; | |
| 1309 int32_t region; | |
| 1310 int32_t lang; | |
| 1311 int32_t date_region; | |
| 1312 const char* posixID; | |
| 1313 } mac_lc_rec; | |
| 1314 | |
| 1315 /* Todo: This will be updated with a newer version from www.unicode.org web | |
| 1316 page when it's available.*/ | |
| 1317 #define MAC_LC_MAGIC_NUMBER -5 | |
| 1318 #define MAC_LC_INIT_NUMBER -9 | |
| 1319 | |
| 1320 static const mac_lc_rec mac_lc_recs[] = { | |
| 1321 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 0, "en_US", | |
| 1322 /* United States*/ | |
| 1323 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 1, "fr_FR", | |
| 1324 /* France*/ | |
| 1325 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 2, "en_GB", | |
| 1326 /* Great Britain*/ | |
| 1327 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 3, "de_DE", | |
| 1328 /* Germany*/ | |
| 1329 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 4, "it_IT", | |
| 1330 /* Italy*/ | |
| 1331 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 5, "nl_NL", | |
| 1332 /* Metherlands*/ | |
| 1333 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 6, "fr_BE", | |
| 1334 /* French for Belgium or Lxembourg*/ | |
| 1335 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 7, "sv_SE", | |
| 1336 /* Sweden*/ | |
| 1337 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 9, "da_DK", | |
| 1338 /* Denmark*/ | |
| 1339 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 10, "pt_PT", | |
| 1340 /* Portugal*/ | |
| 1341 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 11, "fr_CA", | |
| 1342 /* French Canada*/ | |
| 1343 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 13, "is_IS", | |
| 1344 /* Israel*/ | |
| 1345 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 14, "ja_JP", | |
| 1346 /* Japan*/ | |
| 1347 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 15, "en_AU", | |
| 1348 /* Australia*/ | |
| 1349 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 16, "ar_AE", | |
| 1350 /* the Arabic world (?)*/ | |
| 1351 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 17, "fi_FI", | |
| 1352 /* Finland*/ | |
| 1353 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 18, "fr_CH", | |
| 1354 /* French for Switzerland*/ | |
| 1355 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 19, "de_CH", | |
| 1356 /* German for Switzerland*/ | |
| 1357 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 20, "el_GR", | |
| 1358 /* Greece*/ | |
| 1359 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 21, "is_IS", | |
| 1360 /* Iceland ===*/ | |
| 1361 /*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 22, "",*/ | |
| 1362 /* Malta ===*/ | |
| 1363 /*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 23, "",*/ | |
| 1364 /* Cyprus ===*/ | |
| 1365 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 24, "tr_TR", | |
| 1366 /* Turkey ===*/ | |
| 1367 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 25, "sh_YU", | |
| 1368 /* Croatian system for Yugoslavia*/ | |
| 1369 /*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 33, "",*/ | |
| 1370 /* Hindi system for India*/ | |
| 1371 /*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 34, "",*/ | |
| 1372 /* Pakistan*/ | |
| 1373 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 41, "lt_LT", | |
| 1374 /* Lithuania*/ | |
| 1375 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 42, "pl_PL", | |
| 1376 /* Poland*/ | |
| 1377 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 43, "hu_HU", | |
| 1378 /* Hungary*/ | |
| 1379 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 44, "et_EE", | |
| 1380 /* Estonia*/ | |
| 1381 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 45, "lv_LV", | |
| 1382 /* Latvia*/ | |
| 1383 /*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 46, "",*/ | |
| 1384 /* Lapland [Ask Rich for the data. HS]*/ | |
| 1385 /*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 47, "",*/ | |
| 1386 /* Faeroe Islands*/ | |
| 1387 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 48, "fa_IR", | |
| 1388 /* Iran*/ | |
| 1389 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 49, "ru_RU", | |
| 1390 /* Russia*/ | |
| 1391 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 50, "en_IE", | |
| 1392 /* Ireland*/ | |
| 1393 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 51, "ko_KR", | |
| 1394 /* Korea*/ | |
| 1395 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 52, "zh_CN", | |
| 1396 /* People's Republic of China*/ | |
| 1397 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 53, "zh_TW", | |
| 1398 /* Taiwan*/ | |
| 1399 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 54, "th_TH", | |
| 1400 /* Thailand*/ | |
| 1401 | |
| 1402 /* fallback is en_US*/ | |
| 1403 MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, | |
| 1404 MAC_LC_MAGIC_NUMBER, "en_US" | |
| 1405 }; | |
| 1406 | |
| 1407 #endif | |
| 1408 | |
| 1409 #if U_POSIX_LOCALE | |
| 1410 /* A helper function used by uprv_getPOSIXIDForDefaultLocale and | |
| 1411 * uprv_getPOSIXIDForDefaultCodepage. Returns the posix locale id for | |
| 1412 * LC_CTYPE and LC_MESSAGES. It doesn't support other locale categories. | |
| 1413 */ | |
| 1414 static const char *uprv_getPOSIXIDForCategory(int category) | |
| 1415 { | |
| 1416 const char* posixID = NULL; | |
| 1417 if (category == LC_MESSAGES || category == LC_CTYPE) { | |
| 1418 /* | |
| 1419 * On Solaris two different calls to setlocale can result in | |
| 1420 * different values. Only get this value once. | |
| 1421 * | |
| 1422 * We must check this first because an application can set this. | |
| 1423 * | |
| 1424 * LC_ALL can't be used because it's platform dependent. The LANG | |
| 1425 * environment variable seems to affect LC_CTYPE variable by default. | |
| 1426 * Here is what setlocale(LC_ALL, NULL) can return. | |
| 1427 * HPUX can return 'C C C C C C C' | |
| 1428 * Solaris can return /en_US/C/C/C/C/C on the second try. | |
| 1429 * Linux can return LC_CTYPE=C;LC_NUMERIC=C;... | |
| 1430 * | |
| 1431 * The default codepage detection also needs to use LC_CTYPE. | |
| 1432 * | |
| 1433 * Do not call setlocale(LC_*, "")! Using an empty string instead | |
| 1434 * of NULL, will modify the libc behavior. | |
| 1435 */ | |
| 1436 posixID = setlocale(category, NULL); | |
| 1437 if ((posixID == 0) | |
| 1438 || (uprv_strcmp("C", posixID) == 0) | |
| 1439 || (uprv_strcmp("POSIX", posixID) == 0)) | |
| 1440 { | |
| 1441 /* Maybe we got some garbage. Try something more reasonable */ | |
| 1442 posixID = getenv("LC_ALL"); | |
| 1443 if (posixID == 0) { | |
| 1444 posixID = getenv(category == LC_MESSAGES ? "LC_MESSAGES" : "LC_CTYPE"); | |
| 1445 if (posixID == 0) { | |
| 1446 posixID = getenv("LANG"); | |
| 1447 } | |
| 1448 } | |
| 1449 } | |
| 1450 } | |
| 1451 if ((posixID==0) | |
| 1452 || (uprv_strcmp("C", posixID) == 0) | |
| 1453 || (uprv_strcmp("POSIX", posixID) == 0)) | |
| 1454 { | |
| 1455 /* Nothing worked. Give it a nice POSIX default value. */ | |
| 1456 posixID = "en_US_POSIX"; | |
| 1457 } | |
| 1458 return posixID; | |
| 1459 } | |
| 1460 | |
| 1461 /* Return just the POSIX id for the default locale, whatever happens to be in | |
| 1462 * it. It gets the value from LC_MESSAGES and indirectly from LC_ALL and LANG. | |
| 1463 */ | |
| 1464 static const char *uprv_getPOSIXIDForDefaultLocale(void) | |
| 1465 { | |
| 1466 static const char* posixID = NULL; | |
| 1467 if (posixID == 0) { | |
| 1468 posixID = uprv_getPOSIXIDForCategory(LC_MESSAGES); | |
| 1469 } | |
| 1470 return posixID; | |
| 1471 } | |
| 1472 | |
| 1473 #if !U_CHARSET_IS_UTF8 | |
| 1474 /* Return just the POSIX id for the default codepage, whatever happens to be in | |
| 1475 * it. It gets the value from LC_CTYPE and indirectly from LC_ALL and LANG. | |
| 1476 */ | |
| 1477 static const char *uprv_getPOSIXIDForDefaultCodepage(void) | |
| 1478 { | |
| 1479 static const char* posixID = NULL; | |
| 1480 if (posixID == 0) { | |
| 1481 posixID = uprv_getPOSIXIDForCategory(LC_CTYPE); | |
| 1482 } | |
| 1483 return posixID; | |
| 1484 } | |
| 1485 #endif | |
| 1486 #endif | |
| 1487 | |
| 1488 /* NOTE: The caller should handle thread safety */ | |
| 1489 U_CAPI const char* U_EXPORT2 | |
| 1490 uprv_getDefaultLocaleID() | |
| 1491 { | |
| 1492 #if U_POSIX_LOCALE | |
| 1493 /* | |
| 1494 Note that: (a '!' means the ID is improper somehow) | |
| 1495 LC_ALL ----> default_loc codepage | |
| 1496 -------------------------------------------------------- | |
| 1497 ab.CD ab CD | |
| 1498 ab@CD ab__CD - | |
| 1499 ab@CD.EF ab__CD EF | |
| 1500 | |
| 1501 ab_CD.EF@GH ab_CD_GH EF | |
| 1502 | |
| 1503 Some 'improper' ways to do the same as above: | |
| 1504 ! ab_CD@GH.EF ab_CD_GH EF | |
| 1505 ! ab_CD.EF@GH.IJ ab_CD_GH EF | |
| 1506 ! ab_CD@ZZ.EF@GH.IJ ab_CD_GH EF | |
| 1507 | |
| 1508 _CD@GH _CD_GH - | |
| 1509 _CD.EF@GH _CD_GH EF | |
| 1510 | |
| 1511 The variant cannot have dots in it. | |
| 1512 The 'rightmost' variant (@xxx) wins. | |
| 1513 The leftmost codepage (.xxx) wins. | |
| 1514 */ | |
| 1515 char *correctedPOSIXLocale = 0; | |
| 1516 const char* posixID = uprv_getPOSIXIDForDefaultLocale(); | |
| 1517 const char *p; | |
| 1518 const char *q; | |
| 1519 int32_t len; | |
| 1520 | |
| 1521 /* Format: (no spaces) | |
| 1522 ll [ _CC ] [ . MM ] [ @ VV] | |
| 1523 | |
| 1524 l = lang, C = ctry, M = charmap, V = variant | |
| 1525 */ | |
| 1526 | |
| 1527 if (gCorrectedPOSIXLocale != NULL) { | |
| 1528 return gCorrectedPOSIXLocale; | |
| 1529 } | |
| 1530 | |
| 1531 if ((p = uprv_strchr(posixID, '.')) != NULL) { | |
| 1532 /* assume new locale can't be larger than old one? */ | |
| 1533 correctedPOSIXLocale = static_cast<char *>(uprv_malloc(uprv_strlen(posixID)+1)); | |
| 1534 /* Exit on memory allocation error. */ | |
| 1535 if (correctedPOSIXLocale == NULL) { | |
| 1536 return NULL; | |
| 1537 } | |
| 1538 uprv_strncpy(correctedPOSIXLocale, posixID, p-posixID); | |
| 1539 correctedPOSIXLocale[p-posixID] = 0; | |
| 1540 | |
| 1541 /* do not copy after the @ */ | |
| 1542 if ((p = uprv_strchr(correctedPOSIXLocale, '@')) != NULL) { | |
| 1543 correctedPOSIXLocale[p-correctedPOSIXLocale] = 0; | |
| 1544 } | |
| 1545 } | |
| 1546 | |
| 1547 /* Note that we scan the *uncorrected* ID. */ | |
| 1548 if ((p = uprv_strrchr(posixID, '@')) != NULL) { | |
| 1549 if (correctedPOSIXLocale == NULL) { | |
| 1550 correctedPOSIXLocale = static_cast<char *>(uprv_malloc(uprv_strlen(posixID)+1)); | |
| 1551 /* Exit on memory allocation error. */ | |
| 1552 if (correctedPOSIXLocale == NULL) { | |
| 1553 return NULL; | |
| 1554 } | |
| 1555 uprv_strncpy(correctedPOSIXLocale, posixID, p-posixID); | |
| 1556 correctedPOSIXLocale[p-posixID] = 0; | |
| 1557 } | |
| 1558 p++; | |
| 1559 | |
| 1560 /* Take care of any special cases here.. */ | |
| 1561 if (!uprv_strcmp(p, "nynorsk")) { | |
| 1562 p = "NY"; | |
| 1563 /* Don't worry about no__NY. In practice, it won't appear. */ | |
| 1564 } | |
| 1565 | |
| 1566 if (uprv_strchr(correctedPOSIXLocale,'_') == NULL) { | |
| 1567 uprv_strcat(correctedPOSIXLocale, "__"); /* aa@b -> aa__b */ | |
| 1568 } | |
| 1569 else { | |
| 1570 uprv_strcat(correctedPOSIXLocale, "_"); /* aa_CC@b -> aa_CC_b */ | |
| 1571 } | |
| 1572 | |
| 1573 if ((q = uprv_strchr(p, '.')) != NULL) { | |
| 1574 /* How big will the resulting string be? */ | |
| 1575 len = (int32_t)(uprv_strlen(correctedPOSIXLocale) + (q-p)); | |
| 1576 uprv_strncat(correctedPOSIXLocale, p, q-p); | |
| 1577 correctedPOSIXLocale[len] = 0; | |
| 1578 } | |
| 1579 else { | |
| 1580 /* Anything following the @ sign */ | |
| 1581 uprv_strcat(correctedPOSIXLocale, p); | |
| 1582 } | |
| 1583 | |
| 1584 /* Should there be a map from 'no@nynorsk' -> no_NO_NY here? | |
| 1585 * How about 'russian' -> 'ru'? | |
| 1586 * Many of the other locales using ISO codes will be handled by the | |
| 1587 * canonicalization functions in uloc_getDefault. | |
| 1588 */ | |
| 1589 } | |
| 1590 | |
| 1591 /* Was a correction made? */ | |
| 1592 if (correctedPOSIXLocale != NULL) { | |
| 1593 posixID = correctedPOSIXLocale; | |
| 1594 } | |
| 1595 else { | |
| 1596 /* copy it, just in case the original pointer goes away. See j2395 */ | |
| 1597 correctedPOSIXLocale = (char *)uprv_malloc(uprv_strlen(posixID) + 1); | |
| 1598 /* Exit on memory allocation error. */ | |
| 1599 if (correctedPOSIXLocale == NULL) { | |
| 1600 return NULL; | |
| 1601 } | |
| 1602 posixID = uprv_strcpy(correctedPOSIXLocale, posixID); | |
| 1603 } | |
| 1604 | |
| 1605 if (gCorrectedPOSIXLocale == NULL) { | |
| 1606 gCorrectedPOSIXLocale = correctedPOSIXLocale; | |
| 1607 ucln_common_registerCleanup(UCLN_COMMON_PUTIL, putil_cleanup); | |
| 1608 correctedPOSIXLocale = NULL; | |
| 1609 } | |
| 1610 | |
| 1611 if (correctedPOSIXLocale != NULL) { /* Was already set - clean up. */ | |
| 1612 uprv_free(correctedPOSIXLocale); | |
| 1613 } | |
| 1614 | |
| 1615 return posixID; | |
| 1616 | |
| 1617 #elif U_PLATFORM_USES_ONLY_WIN32_API | |
| 1618 #define POSIX_LOCALE_CAPACITY 64 | |
| 1619 UErrorCode status = U_ZERO_ERROR; | |
| 1620 char *correctedPOSIXLocale = 0; | |
| 1621 | |
| 1622 if (gCorrectedPOSIXLocale != NULL) { | |
| 1623 return gCorrectedPOSIXLocale; | |
| 1624 } | |
| 1625 | |
| 1626 LCID id = GetThreadLocale(); | |
| 1627 correctedPOSIXLocale = static_cast<char *>(uprv_malloc(POSIX_LOCALE_CAPACITY + 1)); | |
| 1628 if (correctedPOSIXLocale) { | |
| 1629 int32_t posixLen = uprv_convertToPosix(id, correctedPOSIXLocale, POSIX_LOCALE_CAPACITY, &status); | |
| 1630 if (U_SUCCESS(status)) { | |
| 1631 *(correctedPOSIXLocale + posixLen) = 0; | |
| 1632 gCorrectedPOSIXLocale = correctedPOSIXLocale; | |
| 1633 ucln_common_registerCleanup(UCLN_COMMON_PUTIL, putil_cleanup); | |
| 1634 } else { | |
| 1635 uprv_free(correctedPOSIXLocale); | |
| 1636 } | |
| 1637 } | |
| 1638 | |
| 1639 if (gCorrectedPOSIXLocale == NULL) { | |
| 1640 return "en_US"; | |
| 1641 } | |
| 1642 return gCorrectedPOSIXLocale; | |
| 1643 | |
| 1644 #elif U_PLATFORM == U_PF_CLASSIC_MACOS | |
| 1645 int32_t script = MAC_LC_INIT_NUMBER; | |
| 1646 /* = IntlScript(); or GetScriptManagerVariable(smSysScript);*/ | |
| 1647 int32_t region = MAC_LC_INIT_NUMBER; | |
| 1648 /* = GetScriptManagerVariable(smRegionCode);*/ | |
| 1649 int32_t lang = MAC_LC_INIT_NUMBER; | |
| 1650 /* = GetScriptManagerVariable(smScriptLang);*/ | |
| 1651 int32_t date_region = MAC_LC_INIT_NUMBER; | |
| 1652 const char* posixID = 0; | |
| 1653 int32_t count = sizeof(mac_lc_recs) / sizeof(mac_lc_rec); | |
| 1654 int32_t i; | |
| 1655 Intl1Hndl ih; | |
| 1656 | |
| 1657 ih = (Intl1Hndl) GetIntlResource(1); | |
| 1658 if (ih) | |
| 1659 date_region = ((uint16_t)(*ih)->intl1Vers) >> 8; | |
| 1660 | |
| 1661 for (i = 0; i < count; i++) { | |
| 1662 if ( ((mac_lc_recs[i].script == MAC_LC_MAGIC_NUMBER) | |
| 1663 || (mac_lc_recs[i].script == script)) | |
| 1664 && ((mac_lc_recs[i].region == MAC_LC_MAGIC_NUMBER) | |
| 1665 || (mac_lc_recs[i].region == region)) | |
| 1666 && ((mac_lc_recs[i].lang == MAC_LC_MAGIC_NUMBER) | |
| 1667 || (mac_lc_recs[i].lang == lang)) | |
| 1668 && ((mac_lc_recs[i].date_region == MAC_LC_MAGIC_NUMBER) | |
| 1669 || (mac_lc_recs[i].date_region == date_region)) | |
| 1670 ) | |
| 1671 { | |
| 1672 posixID = mac_lc_recs[i].posixID; | |
| 1673 break; | |
| 1674 } | |
| 1675 } | |
| 1676 | |
| 1677 return posixID; | |
| 1678 | |
| 1679 #elif U_PLATFORM == U_PF_OS400 | |
| 1680 /* locales are process scoped and are by definition thread safe */ | |
| 1681 static char correctedLocale[64]; | |
| 1682 const char *localeID = getenv("LC_ALL"); | |
| 1683 char *p; | |
| 1684 | |
| 1685 if (localeID == NULL) | |
| 1686 localeID = getenv("LANG"); | |
| 1687 if (localeID == NULL) | |
| 1688 localeID = setlocale(LC_ALL, NULL); | |
| 1689 /* Make sure we have something... */ | |
| 1690 if (localeID == NULL) | |
| 1691 return "en_US_POSIX"; | |
| 1692 | |
| 1693 /* Extract the locale name from the path. */ | |
| 1694 if((p = uprv_strrchr(localeID, '/')) != NULL) | |
| 1695 { | |
| 1696 /* Increment p to start of locale name. */ | |
| 1697 p++; | |
| 1698 localeID = p; | |
| 1699 } | |
| 1700 | |
| 1701 /* Copy to work location. */ | |
| 1702 uprv_strcpy(correctedLocale, localeID); | |
| 1703 | |
| 1704 /* Strip off the '.locale' extension. */ | |
| 1705 if((p = uprv_strchr(correctedLocale, '.')) != NULL) { | |
| 1706 *p = 0; | |
| 1707 } | |
| 1708 | |
| 1709 /* Upper case the locale name. */ | |
| 1710 T_CString_toUpperCase(correctedLocale); | |
| 1711 | |
| 1712 /* See if we are using the POSIX locale. Any of the | |
| 1713 * following are equivalent and use the same QLGPGCMA | |
| 1714 * (POSIX) locale. | |
| 1715 * QLGPGCMA2 means UCS2 | |
| 1716 * QLGPGCMA_4 means UTF-32 | |
| 1717 * QLGPGCMA_8 means UTF-8 | |
| 1718 */ | |
| 1719 if ((uprv_strcmp("C", correctedLocale) == 0) || | |
| 1720 (uprv_strcmp("POSIX", correctedLocale) == 0) || | |
| 1721 (uprv_strncmp("QLGPGCMA", correctedLocale, 8) == 0)) | |
| 1722 { | |
| 1723 uprv_strcpy(correctedLocale, "en_US_POSIX"); | |
| 1724 } | |
| 1725 else | |
| 1726 { | |
| 1727 int16_t LocaleLen; | |
| 1728 | |
| 1729 /* Lower case the lang portion. */ | |
| 1730 for(p = correctedLocale; *p != 0 && *p != '_'; p++) | |
| 1731 { | |
| 1732 *p = uprv_tolower(*p); | |
| 1733 } | |
| 1734 | |
| 1735 /* Adjust for Euro. After '_E' add 'URO'. */ | |
| 1736 LocaleLen = uprv_strlen(correctedLocale); | |
| 1737 if (correctedLocale[LocaleLen - 2] == '_' && | |
| 1738 correctedLocale[LocaleLen - 1] == 'E') | |
| 1739 { | |
| 1740 uprv_strcat(correctedLocale, "URO"); | |
| 1741 } | |
| 1742 | |
| 1743 /* If using Lotus-based locale then convert to | |
| 1744 * equivalent non Lotus. | |
| 1745 */ | |
| 1746 else if (correctedLocale[LocaleLen - 2] == '_' && | |
| 1747 correctedLocale[LocaleLen - 1] == 'L') | |
| 1748 { | |
| 1749 correctedLocale[LocaleLen - 2] = 0; | |
| 1750 } | |
| 1751 | |
| 1752 /* There are separate simplified and traditional | |
| 1753 * locales called zh_HK_S and zh_HK_T. | |
| 1754 */ | |
| 1755 else if (uprv_strncmp(correctedLocale, "zh_HK", 5) == 0) | |
| 1756 { | |
| 1757 uprv_strcpy(correctedLocale, "zh_HK"); | |
| 1758 } | |
| 1759 | |
| 1760 /* A special zh_CN_GBK locale... | |
| 1761 */ | |
| 1762 else if (uprv_strcmp(correctedLocale, "zh_CN_GBK") == 0) | |
| 1763 { | |
| 1764 uprv_strcpy(correctedLocale, "zh_CN"); | |
| 1765 } | |
| 1766 | |
| 1767 } | |
| 1768 | |
| 1769 return correctedLocale; | |
| 1770 #endif | |
| 1771 | |
| 1772 } | |
| 1773 | |
| 1774 #if !U_CHARSET_IS_UTF8 | |
| 1775 #if U_POSIX_LOCALE | |
| 1776 /* | |
| 1777 Due to various platform differences, one platform may specify a charset, | |
| 1778 when they really mean a different charset. Remap the names so that they are | |
| 1779 compatible with ICU. Only conflicting/ambiguous aliases should be resolved | |
| 1780 here. Before adding anything to this function, please consider adding unique | |
| 1781 names to the ICU alias table in the data directory. | |
| 1782 */ | |
| 1783 static const char* | |
| 1784 remapPlatformDependentCodepage(const char *locale, const char *name) { | |
| 1785 if (locale != NULL && *locale == 0) { | |
| 1786 /* Make sure that an empty locale is handled the same way. */ | |
| 1787 locale = NULL; | |
| 1788 } | |
| 1789 if (name == NULL) { | |
| 1790 return NULL; | |
| 1791 } | |
| 1792 #if U_PLATFORM == U_PF_AIX | |
| 1793 if (uprv_strcmp(name, "IBM-943") == 0) { | |
| 1794 /* Use the ASCII compatible ibm-943 */ | |
| 1795 name = "Shift-JIS"; | |
| 1796 } | |
| 1797 else if (uprv_strcmp(name, "IBM-1252") == 0) { | |
| 1798 /* Use the windows-1252 that contains the Euro */ | |
| 1799 name = "IBM-5348"; | |
| 1800 } | |
| 1801 #elif U_PLATFORM == U_PF_SOLARIS | |
| 1802 if (locale != NULL && uprv_strcmp(name, "EUC") == 0) { | |
| 1803 /* Solaris underspecifies the "EUC" name. */ | |
| 1804 if (uprv_strcmp(locale, "zh_CN") == 0) { | |
| 1805 name = "EUC-CN"; | |
| 1806 } | |
| 1807 else if (uprv_strcmp(locale, "zh_TW") == 0) { | |
| 1808 name = "EUC-TW"; | |
| 1809 } | |
| 1810 else if (uprv_strcmp(locale, "ko_KR") == 0) { | |
| 1811 name = "EUC-KR"; | |
| 1812 } | |
| 1813 } | |
| 1814 else if (uprv_strcmp(name, "eucJP") == 0) { | |
| 1815 /* | |
| 1816 ibm-954 is the best match. | |
| 1817 ibm-33722 is the default for eucJP (similar to Windows). | |
| 1818 */ | |
| 1819 name = "eucjis"; | |
| 1820 } | |
| 1821 else if (uprv_strcmp(name, "646") == 0) { | |
| 1822 /* | |
| 1823 * The default codepage given by Solaris is 646 but the C library routines treat it as if it was | |
| 1824 * ISO-8859-1 instead of US-ASCII(646). | |
| 1825 */ | |
| 1826 name = "ISO-8859-1"; | |
| 1827 } | |
| 1828 #elif U_PLATFORM_IS_DARWIN_BASED | |
| 1829 if (locale == NULL && *name == 0) { | |
| 1830 /* | |
| 1831 No locale was specified, and an empty name was passed in. | |
| 1832 This usually indicates that nl_langinfo didn't return valid information. | |
| 1833 Mac OS X uses UTF-8 by default (especially the locale data and console). | |
| 1834 */ | |
| 1835 name = "UTF-8"; | |
| 1836 } | |
| 1837 else if (uprv_strcmp(name, "CP949") == 0) { | |
| 1838 /* Remap CP949 to a similar codepage to avoid issues with backslash and won symbol. */ | |
| 1839 name = "EUC-KR"; | |
| 1840 } | |
| 1841 else if (locale != NULL && uprv_strcmp(locale, "en_US_POSIX") != 0 && uprv_strcmp(name, "US-ASCII") == 0) { | |
| 1842 /* | |
| 1843 * For non C/POSIX locale, default the code page to UTF-8 instead of US-ASCII. | |
| 1844 */ | |
| 1845 name = "UTF-8"; | |
| 1846 } | |
| 1847 #elif U_PLATFORM == U_PF_BSD | |
| 1848 if (uprv_strcmp(name, "CP949") == 0) { | |
| 1849 /* Remap CP949 to a similar codepage to avoid issues with backslash and won symbol. */ | |
| 1850 name = "EUC-KR"; | |
| 1851 } | |
| 1852 #elif U_PLATFORM == U_PF_HPUX | |
| 1853 if (locale != NULL && uprv_strcmp(locale, "zh_HK") == 0 && uprv_strcmp(name, "big5") == 0) { | |
| 1854 /* HP decided to extend big5 as hkbig5 even though it's not compatible :-( */ | |
| 1855 /* zh_TW.big5 is not the same charset as zh_HK.big5! */ | |
| 1856 name = "hkbig5"; | |
| 1857 } | |
| 1858 else if (uprv_strcmp(name, "eucJP") == 0) { | |
| 1859 /* | |
| 1860 ibm-1350 is the best match, but unavailable. | |
| 1861 ibm-954 is mostly a superset of ibm-1350. | |
| 1862 ibm-33722 is the default for eucJP (similar to Windows). | |
| 1863 */ | |
| 1864 name = "eucjis"; | |
| 1865 } | |
| 1866 #elif U_PLATFORM == U_PF_LINUX | |
| 1867 if (locale != NULL && uprv_strcmp(name, "euc") == 0) { | |
| 1868 /* Linux underspecifies the "EUC" name. */ | |
| 1869 if (uprv_strcmp(locale, "korean") == 0) { | |
| 1870 name = "EUC-KR"; | |
| 1871 } | |
| 1872 else if (uprv_strcmp(locale, "japanese") == 0) { | |
| 1873 /* See comment below about eucJP */ | |
| 1874 name = "eucjis"; | |
| 1875 } | |
| 1876 } | |
| 1877 else if (uprv_strcmp(name, "eucjp") == 0) { | |
| 1878 /* | |
| 1879 ibm-1350 is the best match, but unavailable. | |
| 1880 ibm-954 is mostly a superset of ibm-1350. | |
| 1881 ibm-33722 is the default for eucJP (similar to Windows). | |
| 1882 */ | |
| 1883 name = "eucjis"; | |
| 1884 } | |
| 1885 else if (locale != NULL && uprv_strcmp(locale, "en_US_POSIX") != 0 && | |
| 1886 (uprv_strcmp(name, "ANSI_X3.4-1968") == 0 || uprv_strcmp(name, "US-ASCII") == 0)) { | |
| 1887 /* | |
| 1888 * For non C/POSIX locale, default the code page to UTF-8 instead of US-ASCII. | |
| 1889 */ | |
| 1890 name = "UTF-8"; | |
| 1891 } | |
| 1892 /* | |
| 1893 * Linux returns ANSI_X3.4-1968 for C/POSIX, but the call site takes care of | |
| 1894 * it by falling back to 'US-ASCII' when NULL is returned from this | |
| 1895 * function. So, we don't have to worry about it here. | |
| 1896 */ | |
| 1897 #endif | |
| 1898 /* return NULL when "" is passed in */ | |
| 1899 if (*name == 0) { | |
| 1900 name = NULL; | |
| 1901 } | |
| 1902 return name; | |
| 1903 } | |
| 1904 | |
| 1905 static const char* | |
| 1906 getCodepageFromPOSIXID(const char *localeName, char * buffer, int32_t buffCapacity) | |
| 1907 { | |
| 1908 char localeBuf[100]; | |
| 1909 const char *name = NULL; | |
| 1910 char *variant = NULL; | |
| 1911 | |
| 1912 if (localeName != NULL && (name = (uprv_strchr(localeName, '.'))) != NULL) { | |
| 1913 size_t localeCapacity = uprv_min(sizeof(localeBuf), (name-localeName)+1); | |
| 1914 uprv_strncpy(localeBuf, localeName, localeCapacity); | |
| 1915 localeBuf[localeCapacity-1] = 0; /* ensure NULL termination */ | |
| 1916 name = uprv_strncpy(buffer, name+1, buffCapacity); | |
| 1917 buffer[buffCapacity-1] = 0; /* ensure NULL termination */ | |
| 1918 if ((variant = const_cast<char *>(uprv_strchr(name, '@'))) != NULL) { | |
| 1919 *variant = 0; | |
| 1920 } | |
| 1921 name = remapPlatformDependentCodepage(localeBuf, name); | |
| 1922 } | |
| 1923 return name; | |
| 1924 } | |
| 1925 #endif | |
| 1926 | |
| 1927 static const char* | |
| 1928 int_getDefaultCodepage() | |
| 1929 { | |
| 1930 #if U_PLATFORM == U_PF_OS400 | |
| 1931 uint32_t ccsid = 37; /* Default to ibm-37 */ | |
| 1932 static char codepage[64]; | |
| 1933 Qwc_JOBI0400_t jobinfo; | |
| 1934 Qus_EC_t error = { sizeof(Qus_EC_t) }; /* SPI error code */ | |
| 1935 | |
| 1936 EPT_CALL(QUSRJOBI)(&jobinfo, sizeof(jobinfo), "JOBI0400", | |
| 1937 "* ", " ", &error); | |
| 1938 | |
| 1939 if (error.Bytes_Available == 0) { | |
| 1940 if (jobinfo.Coded_Char_Set_ID != 0xFFFF) { | |
| 1941 ccsid = (uint32_t)jobinfo.Coded_Char_Set_ID; | |
| 1942 } | |
| 1943 else if (jobinfo.Default_Coded_Char_Set_Id != 0xFFFF) { | |
| 1944 ccsid = (uint32_t)jobinfo.Default_Coded_Char_Set_Id; | |
| 1945 } | |
| 1946 /* else use the default */ | |
| 1947 } | |
| 1948 sprintf(codepage,"ibm-%d", ccsid); | |
| 1949 return codepage; | |
| 1950 | |
| 1951 #elif U_PLATFORM == U_PF_OS390 | |
| 1952 static char codepage[64]; | |
| 1953 | |
| 1954 strncpy(codepage, nl_langinfo(CODESET),63-strlen(UCNV_SWAP_LFNL_OPTION_STRING)); | |
| 1955 strcat(codepage,UCNV_SWAP_LFNL_OPTION_STRING); | |
| 1956 codepage[63] = 0; /* NULL terminate */ | |
| 1957 | |
| 1958 return codepage; | |
| 1959 | |
| 1960 #elif U_PLATFORM == U_PF_CLASSIC_MACOS | |
| 1961 return "macintosh"; /* TODO: Macintosh Roman. There must be a better way. fixme! */ | |
| 1962 | |
| 1963 #elif U_PLATFORM_USES_ONLY_WIN32_API | |
| 1964 static char codepage[64]; | |
| 1965 sprintf(codepage, "windows-%d", GetACP()); | |
| 1966 return codepage; | |
| 1967 | |
| 1968 #elif U_POSIX_LOCALE | |
| 1969 static char codesetName[100]; | |
| 1970 const char *localeName = NULL; | |
| 1971 const char *name = NULL; | |
| 1972 | |
| 1973 localeName = uprv_getPOSIXIDForDefaultCodepage(); | |
| 1974 uprv_memset(codesetName, 0, sizeof(codesetName)); | |
| 1975 #if U_HAVE_NL_LANGINFO_CODESET | |
| 1976 /* When available, check nl_langinfo first because it usually gives more | |
| 1977 useful names. It depends on LC_CTYPE. | |
| 1978 nl_langinfo may use the same buffer as setlocale. */ | |
| 1979 { | |
| 1980 const char *codeset = nl_langinfo(U_NL_LANGINFO_CODESET); | |
| 1981 #if U_PLATFORM_IS_DARWIN_BASED || U_PLATFORM_IS_LINUX_BASED | |
| 1982 /* | |
| 1983 * On Linux and MacOSX, ensure that default codepage for non C/POSIX locale is UTF-8 | |
| 1984 * instead of ASCII. | |
| 1985 */ | |
| 1986 if (uprv_strcmp(localeName, "en_US_POSIX") != 0) { | |
| 1987 codeset = remapPlatformDependentCodepage(localeName, codeset); | |
| 1988 } else | |
| 1989 #endif | |
| 1990 { | |
| 1991 codeset = remapPlatformDependentCodepage(NULL, codeset); | |
| 1992 } | |
| 1993 | |
| 1994 if (codeset != NULL) { | |
| 1995 uprv_strncpy(codesetName, codeset, sizeof(codesetName)); | |
| 1996 codesetName[sizeof(codesetName)-1] = 0; | |
| 1997 return codesetName; | |
| 1998 } | |
| 1999 } | |
| 2000 #endif | |
| 2001 | |
| 2002 /* Use setlocale in a nice way, and then check some environment variables. | |
| 2003 Maybe the application used setlocale already. | |
| 2004 */ | |
| 2005 uprv_memset(codesetName, 0, sizeof(codesetName)); | |
| 2006 name = getCodepageFromPOSIXID(localeName, codesetName, sizeof(codesetName)); | |
| 2007 if (name) { | |
| 2008 /* if we can find the codeset name from setlocale, return that. */ | |
| 2009 return name; | |
| 2010 } | |
| 2011 | |
| 2012 if (*codesetName == 0) | |
| 2013 { | |
| 2014 /* Everything failed. Return US ASCII (ISO 646). */ | |
| 2015 (void)uprv_strcpy(codesetName, "US-ASCII"); | |
| 2016 } | |
| 2017 return codesetName; | |
| 2018 #else | |
| 2019 return "US-ASCII"; | |
| 2020 #endif | |
| 2021 } | |
| 2022 | |
| 2023 | |
| 2024 U_CAPI const char* U_EXPORT2 | |
| 2025 uprv_getDefaultCodepage() | |
| 2026 { | |
| 2027 static char const *name = NULL; | |
| 2028 umtx_lock(NULL); | |
| 2029 if (name == NULL) { | |
| 2030 name = int_getDefaultCodepage(); | |
| 2031 } | |
| 2032 umtx_unlock(NULL); | |
| 2033 return name; | |
| 2034 } | |
| 2035 #endif /* !U_CHARSET_IS_UTF8 */ | |
| 2036 | |
| 2037 | |
| 2038 /* end of platform-specific implementation -------------- */ | |
| 2039 | |
| 2040 /* version handling --------------------------------------------------------- */ | |
| 2041 | |
| 2042 U_CAPI void U_EXPORT2 | |
| 2043 u_versionFromString(UVersionInfo versionArray, const char *versionString) { | |
| 2044 char *end; | |
| 2045 uint16_t part=0; | |
| 2046 | |
| 2047 if(versionArray==NULL) { | |
| 2048 return; | |
| 2049 } | |
| 2050 | |
| 2051 if(versionString!=NULL) { | |
| 2052 for(;;) { | |
| 2053 versionArray[part]=(uint8_t)uprv_strtoul(versionString, &end, 10); | |
| 2054 if(end==versionString || ++part==U_MAX_VERSION_LENGTH || *end!=U_VERSION_DELIMITER) { | |
| 2055 break; | |
| 2056 } | |
| 2057 versionString=end+1; | |
| 2058 } | |
| 2059 } | |
| 2060 | |
| 2061 while(part<U_MAX_VERSION_LENGTH) { | |
| 2062 versionArray[part++]=0; | |
| 2063 } | |
| 2064 } | |
| 2065 | |
| 2066 U_CAPI void U_EXPORT2 | |
| 2067 u_versionFromUString(UVersionInfo versionArray, const UChar *versionString) { | |
| 2068 if(versionArray!=NULL && versionString!=NULL) { | |
| 2069 char versionChars[U_MAX_VERSION_STRING_LENGTH+1]; | |
| 2070 int32_t len = u_strlen(versionString); | |
| 2071 if(len>U_MAX_VERSION_STRING_LENGTH) { | |
| 2072 len = U_MAX_VERSION_STRING_LENGTH; | |
| 2073 } | |
| 2074 u_UCharsToChars(versionString, versionChars, len); | |
| 2075 versionChars[len]=0; | |
| 2076 u_versionFromString(versionArray, versionChars); | |
| 2077 } | |
| 2078 } | |
| 2079 | |
| 2080 U_CAPI void U_EXPORT2 | |
| 2081 u_versionToString(const UVersionInfo versionArray, char *versionString) { | |
| 2082 uint16_t count, part; | |
| 2083 uint8_t field; | |
| 2084 | |
| 2085 if(versionString==NULL) { | |
| 2086 return; | |
| 2087 } | |
| 2088 | |
| 2089 if(versionArray==NULL) { | |
| 2090 versionString[0]=0; | |
| 2091 return; | |
| 2092 } | |
| 2093 | |
| 2094 /* count how many fields need to be written */ | |
| 2095 for(count=4; count>0 && versionArray[count-1]==0; --count) { | |
| 2096 } | |
| 2097 | |
| 2098 if(count <= 1) { | |
| 2099 count = 2; | |
| 2100 } | |
| 2101 | |
| 2102 /* write the first part */ | |
| 2103 /* write the decimal field value */ | |
| 2104 field=versionArray[0]; | |
| 2105 if(field>=100) { | |
| 2106 *versionString++=(char)('0'+field/100); | |
| 2107 field%=100; | |
| 2108 } | |
| 2109 if(field>=10) { | |
| 2110 *versionString++=(char)('0'+field/10); | |
| 2111 field%=10; | |
| 2112 } | |
| 2113 *versionString++=(char)('0'+field); | |
| 2114 | |
| 2115 /* write the following parts */ | |
| 2116 for(part=1; part<count; ++part) { | |
| 2117 /* write a dot first */ | |
| 2118 *versionString++=U_VERSION_DELIMITER; | |
| 2119 | |
| 2120 /* write the decimal field value */ | |
| 2121 field=versionArray[part]; | |
| 2122 if(field>=100) { | |
| 2123 *versionString++=(char)('0'+field/100); | |
| 2124 field%=100; | |
| 2125 } | |
| 2126 if(field>=10) { | |
| 2127 *versionString++=(char)('0'+field/10); | |
| 2128 field%=10; | |
| 2129 } | |
| 2130 *versionString++=(char)('0'+field); | |
| 2131 } | |
| 2132 | |
| 2133 /* NUL-terminate */ | |
| 2134 *versionString=0; | |
| 2135 } | |
| 2136 | |
| 2137 U_CAPI void U_EXPORT2 | |
| 2138 u_getVersion(UVersionInfo versionArray) { | |
| 2139 u_versionFromString(versionArray, U_ICU_VERSION); | |
| 2140 } | |
| 2141 | |
| 2142 /** | |
| 2143 * icucfg.h dependent code | |
| 2144 */ | |
| 2145 | |
| 2146 #if U_ENABLE_DYLOAD | |
| 2147 | |
| 2148 #if HAVE_DLOPEN && !U_PLATFORM_USES_ONLY_WIN32_API | |
| 2149 | |
| 2150 #if HAVE_DLFCN_H | |
| 2151 | |
| 2152 #ifdef __MVS__ | |
| 2153 #ifndef __SUSV3 | |
| 2154 #define __SUSV3 1 | |
| 2155 #endif | |
| 2156 #endif | |
| 2157 #include <dlfcn.h> | |
| 2158 #endif | |
| 2159 | |
| 2160 U_INTERNAL void * U_EXPORT2 | |
| 2161 uprv_dl_open(const char *libName, UErrorCode *status) { | |
| 2162 void *ret = NULL; | |
| 2163 if(U_FAILURE(*status)) return ret; | |
| 2164 ret = dlopen(libName, RTLD_NOW|RTLD_GLOBAL); | |
| 2165 if(ret==NULL) { | |
| 2166 #ifdef U_TRACE_DYLOAD | |
| 2167 printf("dlerror on dlopen(%s): %s\n", libName, dlerror()); | |
| 2168 #endif | |
| 2169 *status = U_MISSING_RESOURCE_ERROR; | |
| 2170 } | |
| 2171 return ret; | |
| 2172 } | |
| 2173 | |
| 2174 U_INTERNAL void U_EXPORT2 | |
| 2175 uprv_dl_close(void *lib, UErrorCode *status) { | |
| 2176 if(U_FAILURE(*status)) return; | |
| 2177 dlclose(lib); | |
| 2178 } | |
| 2179 | |
| 2180 U_INTERNAL UVoidFunction* U_EXPORT2 | |
| 2181 uprv_dlsym_func(void *lib, const char* sym, UErrorCode *status) { | |
| 2182 union { | |
| 2183 UVoidFunction *fp; | |
| 2184 void *vp; | |
| 2185 } uret; | |
| 2186 uret.fp = NULL; | |
| 2187 if(U_FAILURE(*status)) return uret.fp; | |
| 2188 uret.vp = dlsym(lib, sym); | |
| 2189 if(uret.vp == NULL) { | |
| 2190 #ifdef U_TRACE_DYLOAD | |
| 2191 printf("dlerror on dlsym(%p,%s): %s\n", lib,sym, dlerror()); | |
| 2192 #endif | |
| 2193 *status = U_MISSING_RESOURCE_ERROR; | |
| 2194 } | |
| 2195 return uret.fp; | |
| 2196 } | |
| 2197 | |
| 2198 #else | |
| 2199 | |
| 2200 /* null (nonexistent) implementation. */ | |
| 2201 | |
| 2202 U_INTERNAL void * U_EXPORT2 | |
| 2203 uprv_dl_open(const char *libName, UErrorCode *status) { | |
| 2204 if(U_FAILURE(*status)) return NULL; | |
| 2205 *status = U_UNSUPPORTED_ERROR; | |
| 2206 return NULL; | |
| 2207 } | |
| 2208 | |
| 2209 U_INTERNAL void U_EXPORT2 | |
| 2210 uprv_dl_close(void *lib, UErrorCode *status) { | |
| 2211 if(U_FAILURE(*status)) return; | |
| 2212 *status = U_UNSUPPORTED_ERROR; | |
| 2213 return; | |
| 2214 } | |
| 2215 | |
| 2216 | |
| 2217 U_INTERNAL UVoidFunction* U_EXPORT2 | |
| 2218 uprv_dlsym_func(void *lib, const char* sym, UErrorCode *status) { | |
| 2219 if(U_SUCCESS(*status)) { | |
| 2220 *status = U_UNSUPPORTED_ERROR; | |
| 2221 } | |
| 2222 return (UVoidFunction*)NULL; | |
| 2223 } | |
| 2224 | |
| 2225 | |
| 2226 | |
| 2227 #endif | |
| 2228 | |
| 2229 #elif U_PLATFORM_USES_ONLY_WIN32_API | |
| 2230 | |
| 2231 U_INTERNAL void * U_EXPORT2 | |
| 2232 uprv_dl_open(const char *libName, UErrorCode *status) { | |
| 2233 HMODULE lib = NULL; | |
| 2234 | |
| 2235 if(U_FAILURE(*status)) return NULL; | |
| 2236 | |
| 2237 lib = LoadLibraryA(libName); | |
| 2238 | |
| 2239 if(lib==NULL) { | |
| 2240 *status = U_MISSING_RESOURCE_ERROR; | |
| 2241 } | |
| 2242 | |
| 2243 return (void*)lib; | |
| 2244 } | |
| 2245 | |
| 2246 U_INTERNAL void U_EXPORT2 | |
| 2247 uprv_dl_close(void *lib, UErrorCode *status) { | |
| 2248 HMODULE handle = (HMODULE)lib; | |
| 2249 if(U_FAILURE(*status)) return; | |
| 2250 | |
| 2251 FreeLibrary(handle); | |
| 2252 | |
| 2253 return; | |
| 2254 } | |
| 2255 | |
| 2256 | |
| 2257 U_INTERNAL UVoidFunction* U_EXPORT2 | |
| 2258 uprv_dlsym_func(void *lib, const char* sym, UErrorCode *status) { | |
| 2259 HMODULE handle = (HMODULE)lib; | |
| 2260 UVoidFunction* addr = NULL; | |
| 2261 | |
| 2262 if(U_FAILURE(*status) || lib==NULL) return NULL; | |
| 2263 | |
| 2264 addr = (UVoidFunction*)GetProcAddress(handle, sym); | |
| 2265 | |
| 2266 if(addr==NULL) { | |
| 2267 DWORD lastError = GetLastError(); | |
| 2268 if(lastError == ERROR_PROC_NOT_FOUND) { | |
| 2269 *status = U_MISSING_RESOURCE_ERROR; | |
| 2270 } else { | |
| 2271 *status = U_UNSUPPORTED_ERROR; /* other unknown error. */ | |
| 2272 } | |
| 2273 } | |
| 2274 | |
| 2275 return addr; | |
| 2276 } | |
| 2277 | |
| 2278 | |
| 2279 #else | |
| 2280 | |
| 2281 /* No dynamic loading set. */ | |
| 2282 | |
| 2283 U_INTERNAL void * U_EXPORT2 | |
| 2284 uprv_dl_open(const char *libName, UErrorCode *status) { | |
| 2285 if(U_FAILURE(*status)) return NULL; | |
| 2286 *status = U_UNSUPPORTED_ERROR; | |
| 2287 return NULL; | |
| 2288 } | |
| 2289 | |
| 2290 U_INTERNAL void U_EXPORT2 | |
| 2291 uprv_dl_close(void *lib, UErrorCode *status) { | |
| 2292 if(U_FAILURE(*status)) return; | |
| 2293 *status = U_UNSUPPORTED_ERROR; | |
| 2294 return; | |
| 2295 } | |
| 2296 | |
| 2297 | |
| 2298 U_INTERNAL UVoidFunction* U_EXPORT2 | |
| 2299 uprv_dlsym_func(void *lib, const char* sym, UErrorCode *status) { | |
| 2300 if(U_SUCCESS(*status)) { | |
| 2301 *status = U_UNSUPPORTED_ERROR; | |
| 2302 } | |
| 2303 return (UVoidFunction*)NULL; | |
| 2304 } | |
| 2305 | |
| 2306 #endif /* U_ENABLE_DYLOAD */ | |
| 2307 | |
| 2308 /* | |
| 2309 * Hey, Emacs, please set the following: | |
| 2310 * | |
| 2311 * Local Variables: | |
| 2312 * indent-tabs-mode: nil | |
| 2313 * End: | |
| 2314 * | |
| 2315 */ |
