| // © 2016 and later: Unicode, Inc. and others. |
| // License & terms of use: http://www.unicode.org/copyright.html |
| /* |
| ****************************************************************************** |
| * |
| * Copyright (C) 1997-2016, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ****************************************************************************** |
| * |
| * FILE NAME : putil.c (previously putil.cpp and ptypes.cpp) |
| * |
| * Date Name Description |
| * 04/14/97 aliu Creation. |
| * 04/24/97 aliu Added getDefaultDataDirectory() and |
| * getDefaultLocaleID(). |
| * 04/28/97 aliu Rewritten to assume Unix and apply general methods |
| * for assumed case. Non-UNIX platforms must be |
| * special-cased. Rewrote numeric methods dealing |
| * with NaN and Infinity to be platform independent |
| * over all IEEE 754 platforms. |
| * 05/13/97 aliu Restored sign of timezone |
| * (semantics are hours West of GMT) |
| * 06/16/98 erm Added IEEE_754 stuff, cleaned up isInfinite, isNan, |
| * nextDouble.. |
| * 07/22/98 stephen Added remainder, max, min, trunc |
| * 08/13/98 stephen Added isNegativeInfinity, isPositiveInfinity |
| * 08/24/98 stephen Added longBitsFromDouble |
| * 09/08/98 stephen Minor changes for Mac Port |
| * 03/02/99 stephen Removed openFile(). Added AS400 support. |
| * Fixed EBCDIC tables |
| * 04/15/99 stephen Converted to C. |
| * 06/28/99 stephen Removed mutex locking in u_isBigEndian(). |
| * 08/04/99 jeffrey R. Added OS/2 changes |
| * 11/15/99 helena Integrated S/390 IEEE support. |
| * 04/26/01 Barry N. OS/400 support for uprv_getDefaultLocaleID |
| * 08/15/01 Steven H. OS/400 support for uprv_getDefaultCodepage |
| * 01/03/08 Steven L. Fake Time Support |
| ****************************************************************************** |
| */ |
| |
| // Defines _XOPEN_SOURCE for access to POSIX functions. |
| // Must be before any other #includes. |
| #include "uposixdefs.h" |
| |
| // First, the platform type. Need this for U_PLATFORM. |
| #include "unicode/platform.h" |
| |
| #if U_PLATFORM == U_PF_MINGW && defined __STRICT_ANSI__ |
| /* tzset isn't defined in strict ANSI on MinGW. */ |
| #undef __STRICT_ANSI__ |
| #endif |
| |
| /* |
| * Cygwin with GCC requires inclusion of time.h after the above disabling strict asci mode statement. |
| */ |
| #include <time.h> |
| |
| #if !U_PLATFORM_USES_ONLY_WIN32_API |
| #include <sys/time.h> |
| #endif |
| |
| /* include the rest of the ICU headers */ |
| #include "unicode/putil.h" |
| #include "unicode/ustring.h" |
| #include "putilimp.h" |
| #include "uassert.h" |
| #include "umutex.h" |
| #include "cmemory.h" |
| #include "cstring.h" |
| #include "locmap.h" |
| #include "ucln_cmn.h" |
| #include "charstr.h" |
| |
| /* Include standard headers. */ |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <math.h> |
| #include <locale.h> |
| #include <float.h> |
| |
| #ifndef U_COMMON_IMPLEMENTATION |
| #error U_COMMON_IMPLEMENTATION not set - must be set for all ICU source files in common/ - see https://unicode-org.github.io/icu/userguide/howtouseicu |
| #endif |
| |
| |
| /* include system headers */ |
| #if U_PLATFORM_USES_ONLY_WIN32_API |
| /* |
| * TODO: U_PLATFORM_USES_ONLY_WIN32_API includes MinGW. |
| * Should Cygwin be included as well (U_PLATFORM_HAS_WIN32_API) |
| * to use native APIs as much as possible? |
| */ |
| #ifndef WIN32_LEAN_AND_MEAN |
| # define WIN32_LEAN_AND_MEAN |
| #endif |
| # define VC_EXTRALEAN |
| # define NOUSER |
| # define NOSERVICE |
| # define NOIME |
| # define NOMCX |
| # include <windows.h> |
| # include "unicode/uloc.h" |
| # include "wintz.h" |
| #elif U_PLATFORM == U_PF_OS400 |
| # include <float.h> |
| # include <qusec.h> /* error code structure */ |
| # include <qusrjobi.h> |
| # include <qliept.h> /* EPT_CALL macro - this include must be after all other "QSYSINCs" */ |
| # include <mih/testptr.h> /* For uprv_maximumPtr */ |
| #elif U_PLATFORM == U_PF_OS390 |
| # include "unicode/ucnv.h" /* Needed for UCNV_SWAP_LFNL_OPTION_STRING */ |
| #elif U_PLATFORM_IS_DARWIN_BASED || U_PLATFORM_IS_LINUX_BASED || U_PLATFORM == U_PF_BSD || U_PLATFORM == U_PF_SOLARIS |
| # include <limits.h> |
| # include <unistd.h> |
| # if U_PLATFORM == U_PF_SOLARIS |
| # ifndef _XPG4_2 |
| # define _XPG4_2 |
| # endif |
| # elif U_PLATFORM == U_PF_ANDROID |
| # include <sys/system_properties.h> |
| # include <dlfcn.h> |
| # endif |
| #elif U_PLATFORM == U_PF_QNX |
| # include <sys/neutrino.h> |
| #endif |
| |
| |
| /* |
| * Only include langinfo.h if we have a way to get the codeset. If we later |
| * depend on more feature, we can test on U_HAVE_NL_LANGINFO. |
| * |
| */ |
| |
| #if U_HAVE_NL_LANGINFO_CODESET |
| #include <langinfo.h> |
| #endif |
| |
| /** |
| * Simple things (presence of functions, etc) should just go in configure.in and be added to |
| * icucfg.h via autoheader. |
| */ |
| #if U_PLATFORM_IMPLEMENTS_POSIX |
| # if U_PLATFORM == U_PF_OS400 |
| # define HAVE_DLFCN_H 0 |
| # define HAVE_DLOPEN 0 |
| # else |
| # ifndef HAVE_DLFCN_H |
| # define HAVE_DLFCN_H 1 |
| # endif |
| # ifndef HAVE_DLOPEN |
| # define HAVE_DLOPEN 1 |
| # endif |
| # endif |
| # ifndef HAVE_GETTIMEOFDAY |
| # define HAVE_GETTIMEOFDAY 1 |
| # endif |
| #else |
| # define HAVE_DLFCN_H 0 |
| # define HAVE_DLOPEN 0 |
| # define HAVE_GETTIMEOFDAY 0 |
| #endif |
| |
| U_NAMESPACE_USE |
| |
| /* Define the extension for data files, again... */ |
| #define DATA_TYPE "dat" |
| |
| /* Leave this copyright notice here! */ |
| static const char copyright[] = U_COPYRIGHT_STRING; |
| |
| /* floating point implementations ------------------------------------------- */ |
| |
| /* We return QNAN rather than SNAN*/ |
| #define SIGN 0x80000000U |
| |
| /* Make it easy to define certain types of constants */ |
| typedef union { |
| int64_t i64; /* This must be defined first in order to allow the initialization to work. This is a C89 feature. */ |
| double d64; |
| } BitPatternConversion; |
| static const BitPatternConversion gNan = { (int64_t) INT64_C(0x7FF8000000000000) }; |
| static const BitPatternConversion gInf = { (int64_t) INT64_C(0x7FF0000000000000) }; |
| |
| /*--------------------------------------------------------------------------- |
| Platform utilities |
| Our general strategy is to assume we're on a POSIX platform. Platforms which |
| are non-POSIX must declare themselves so. The default POSIX implementation |
| will sometimes work for non-POSIX platforms as well (e.g., the NaN-related |
| functions). |
| ---------------------------------------------------------------------------*/ |
| |
| #if U_PLATFORM_USES_ONLY_WIN32_API || U_PLATFORM == U_PF_OS400 |
| # undef U_POSIX_LOCALE |
| #else |
| # define U_POSIX_LOCALE 1 |
| #endif |
| |
| /* |
| WARNING! u_topNBytesOfDouble and u_bottomNBytesOfDouble |
| can't be properly optimized by the gcc compiler sometimes (i.e. gcc 3.2). |
| */ |
| #if !IEEE_754 |
| static char* |
| u_topNBytesOfDouble(double* d, int n) |
| { |
| #if U_IS_BIG_ENDIAN |
| return (char*)d; |
| #else |
| return (char*)(d + 1) - n; |
| #endif |
| } |
| |
| static char* |
| u_bottomNBytesOfDouble(double* d, int n) |
| { |
| #if U_IS_BIG_ENDIAN |
| return (char*)(d + 1) - n; |
| #else |
| return (char*)d; |
| #endif |
| } |
| #endif /* !IEEE_754 */ |
| |
| #if IEEE_754 |
| static UBool |
| u_signBit(double d) { |
| uint8_t hiByte; |
| #if U_IS_BIG_ENDIAN |
| hiByte = *(uint8_t *)&d; |
| #else |
| hiByte = *(((uint8_t *)&d) + sizeof(double) - 1); |
| #endif |
| return (hiByte & 0x80) != 0; |
| } |
| #endif |
| |
| |
| |
| #if defined (U_DEBUG_FAKETIME) |
| /* Override the clock to test things without having to move the system clock. |
| * Assumes POSIX gettimeofday() will function |
| */ |
| UDate fakeClock_t0 = 0; /** Time to start the clock from **/ |
| UDate fakeClock_dt = 0; /** Offset (fake time - real time) **/ |
| UBool fakeClock_set = FALSE; /** True if fake clock has spun up **/ |
| |
| static UDate getUTCtime_real() { |
| struct timeval posixTime; |
| gettimeofday(&posixTime, NULL); |
| return (UDate)(((int64_t)posixTime.tv_sec * U_MILLIS_PER_SECOND) + (posixTime.tv_usec/1000)); |
| } |
| |
| static UDate getUTCtime_fake() { |
| static UMutex fakeClockMutex; |
| umtx_lock(&fakeClockMutex); |
| if(!fakeClock_set) { |
| UDate real = getUTCtime_real(); |
| const char *fake_start = getenv("U_FAKETIME_START"); |
| if((fake_start!=NULL) && (fake_start[0]!=0)) { |
| sscanf(fake_start,"%lf",&fakeClock_t0); |
| fakeClock_dt = fakeClock_t0 - real; |
| fprintf(stderr,"U_DEBUG_FAKETIME was set at compile time, so the ICU clock will start at a preset value\n" |
| "env variable U_FAKETIME_START=%.0f (%s) for an offset of %.0f ms from the current time %.0f\n", |
| fakeClock_t0, fake_start, fakeClock_dt, real); |
| } else { |
| fakeClock_dt = 0; |
| fprintf(stderr,"U_DEBUG_FAKETIME was set at compile time, but U_FAKETIME_START was not set.\n" |
| "Set U_FAKETIME_START to the number of milliseconds since 1/1/1970 to set the ICU clock.\n"); |
| } |
| fakeClock_set = TRUE; |
| } |
| umtx_unlock(&fakeClockMutex); |
| |
| return getUTCtime_real() + fakeClock_dt; |
| } |
| #endif |
| |
| #if U_PLATFORM_USES_ONLY_WIN32_API |
| typedef union { |
| int64_t int64; |
| FILETIME fileTime; |
| } FileTimeConversion; /* This is like a ULARGE_INTEGER */ |
| |
| /* Number of 100 nanoseconds from 1/1/1601 to 1/1/1970 */ |
| #define EPOCH_BIAS INT64_C(116444736000000000) |
| #define HECTONANOSECOND_PER_MILLISECOND 10000 |
| |
| #endif |
| |
| /*--------------------------------------------------------------------------- |
| Universal Implementations |
| These are designed to work on all platforms. Try these, and if they |
| don't work on your platform, then special case your platform with new |
| implementations. |
| ---------------------------------------------------------------------------*/ |
| |
| U_CAPI UDate U_EXPORT2 |
| uprv_getUTCtime() |
| { |
| #if defined(U_DEBUG_FAKETIME) |
| return getUTCtime_fake(); /* Hook for overriding the clock */ |
| #else |
| return uprv_getRawUTCtime(); |
| #endif |
| } |
| |
| /* Return UTC (GMT) time measured in milliseconds since 0:00 on 1/1/70.*/ |
| U_CAPI UDate U_EXPORT2 |
| uprv_getRawUTCtime() |
| { |
| #if U_PLATFORM_USES_ONLY_WIN32_API |
| |
| FileTimeConversion winTime; |
| GetSystemTimeAsFileTime(&winTime.fileTime); |
| return (UDate)((winTime.int64 - EPOCH_BIAS) / HECTONANOSECOND_PER_MILLISECOND); |
| #else |
| |
| #if HAVE_GETTIMEOFDAY |
| struct timeval posixTime; |
| gettimeofday(&posixTime, NULL); |
| return (UDate)(((int64_t)posixTime.tv_sec * U_MILLIS_PER_SECOND) + (posixTime.tv_usec/1000)); |
| #else |
| time_t epochtime; |
| time(&epochtime); |
| return (UDate)epochtime * U_MILLIS_PER_SECOND; |
| #endif |
| |
| #endif |
| } |
| |
| /*----------------------------------------------------------------------------- |
| IEEE 754 |
| These methods detect and return NaN and infinity values for doubles |
| conforming to IEEE 754. Platforms which support this standard include X86, |
| Mac 680x0, Mac PowerPC, AIX RS/6000, and most others. |
| If this doesn't work on your platform, you have non-IEEE floating-point, and |
| will need to code your own versions. A naive implementation is to return 0.0 |
| for getNaN and getInfinity, and false for isNaN and isInfinite. |
| ---------------------------------------------------------------------------*/ |
| |
| U_CAPI UBool U_EXPORT2 |
| uprv_isNaN(double number) |
| { |
| #if IEEE_754 |
| BitPatternConversion convertedNumber; |
| convertedNumber.d64 = number; |
| /* Infinity is 0x7FF0000000000000U. Anything greater than that is a NaN */ |
| return (UBool)((convertedNumber.i64 & U_INT64_MAX) > gInf.i64); |
| |
| #elif U_PLATFORM == U_PF_OS390 |
| uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number, |
| sizeof(uint32_t)); |
| uint32_t lowBits = *(uint32_t*)u_bottomNBytesOfDouble(&number, |
| sizeof(uint32_t)); |
| |
| return ((highBits & 0x7F080000L) == 0x7F080000L) && |
| (lowBits == 0x00000000L); |
| |
| #else |
| /* If your platform doesn't support IEEE 754 but *does* have an NaN value,*/ |
| /* you'll need to replace this default implementation with what's correct*/ |
| /* for your platform.*/ |
| return number != number; |
| #endif |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| uprv_isInfinite(double number) |
| { |
| #if IEEE_754 |
| BitPatternConversion convertedNumber; |
| convertedNumber.d64 = number; |
| /* Infinity is exactly 0x7FF0000000000000U. */ |
| return (UBool)((convertedNumber.i64 & U_INT64_MAX) == gInf.i64); |
| #elif U_PLATFORM == U_PF_OS390 |
| uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number, |
| sizeof(uint32_t)); |
| uint32_t lowBits = *(uint32_t*)u_bottomNBytesOfDouble(&number, |
| sizeof(uint32_t)); |
| |
| return ((highBits & ~SIGN) == 0x70FF0000L) && (lowBits == 0x00000000L); |
| |
| #else |
| /* If your platform doesn't support IEEE 754 but *does* have an infinity*/ |
| /* value, you'll need to replace this default implementation with what's*/ |
| /* correct for your platform.*/ |
| return number == (2.0 * number); |
| #endif |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| uprv_isPositiveInfinity(double number) |
| { |
| #if IEEE_754 || U_PLATFORM == U_PF_OS390 |
| return (UBool)(number > 0 && uprv_isInfinite(number)); |
| #else |
| return uprv_isInfinite(number); |
| #endif |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| uprv_isNegativeInfinity(double number) |
| { |
| #if IEEE_754 || U_PLATFORM == U_PF_OS390 |
| return (UBool)(number < 0 && uprv_isInfinite(number)); |
| |
| #else |
| uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number, |
| sizeof(uint32_t)); |
| return((highBits & SIGN) && uprv_isInfinite(number)); |
| |
| #endif |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_getNaN() |
| { |
| #if IEEE_754 || U_PLATFORM == U_PF_OS390 |
| return gNan.d64; |
| #else |
| /* If your platform doesn't support IEEE 754 but *does* have an NaN value,*/ |
| /* you'll need to replace this default implementation with what's correct*/ |
| /* for your platform.*/ |
| return 0.0; |
| #endif |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_getInfinity() |
| { |
| #if IEEE_754 || U_PLATFORM == U_PF_OS390 |
| return gInf.d64; |
| #else |
| /* If your platform doesn't support IEEE 754 but *does* have an infinity*/ |
| /* value, you'll need to replace this default implementation with what's*/ |
| /* correct for your platform.*/ |
| return 0.0; |
| #endif |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_floor(double x) |
| { |
| return floor(x); |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_ceil(double x) |
| { |
| return ceil(x); |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_round(double x) |
| { |
| return uprv_floor(x + 0.5); |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_fabs(double x) |
| { |
| return fabs(x); |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_modf(double x, double* y) |
| { |
| return modf(x, y); |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_fmod(double x, double y) |
| { |
| return fmod(x, y); |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_pow(double x, double y) |
| { |
| /* This is declared as "double pow(double x, double y)" */ |
| return pow(x, y); |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_pow10(int32_t x) |
| { |
| return pow(10.0, (double)x); |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_fmax(double x, double y) |
| { |
| #if IEEE_754 |
| /* first handle NaN*/ |
| if(uprv_isNaN(x) || uprv_isNaN(y)) |
| return uprv_getNaN(); |
| |
| /* check for -0 and 0*/ |
| if(x == 0.0 && y == 0.0 && u_signBit(x)) |
| return y; |
| |
| #endif |
| |
| /* this should work for all flt point w/o NaN and Inf special cases */ |
| return (x > y ? x : y); |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_fmin(double x, double y) |
| { |
| #if IEEE_754 |
| /* first handle NaN*/ |
| if(uprv_isNaN(x) || uprv_isNaN(y)) |
| return uprv_getNaN(); |
| |
| /* check for -0 and 0*/ |
| if(x == 0.0 && y == 0.0 && u_signBit(y)) |
| return y; |
| |
| #endif |
| |
| /* this should work for all flt point w/o NaN and Inf special cases */ |
| return (x > y ? y : x); |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| uprv_add32_overflow(int32_t a, int32_t b, int32_t* res) { |
| // NOTE: Some compilers (GCC, Clang) have primitives available, like __builtin_add_overflow. |
| // This function could be optimized by calling one of those primitives. |
| auto a64 = static_cast<int64_t>(a); |
| auto b64 = static_cast<int64_t>(b); |
| int64_t res64 = a64 + b64; |
| *res = static_cast<int32_t>(res64); |
| return res64 != *res; |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| uprv_mul32_overflow(int32_t a, int32_t b, int32_t* res) { |
| // NOTE: Some compilers (GCC, Clang) have primitives available, like __builtin_mul_overflow. |
| // This function could be optimized by calling one of those primitives. |
| auto a64 = static_cast<int64_t>(a); |
| auto b64 = static_cast<int64_t>(b); |
| int64_t res64 = a64 * b64; |
| *res = static_cast<int32_t>(res64); |
| return res64 != *res; |
| } |
| |
| /** |
| * Truncates the given double. |
| * trunc(3.3) = 3.0, trunc (-3.3) = -3.0 |
| * This is different than calling floor() or ceil(): |
| * floor(3.3) = 3, floor(-3.3) = -4 |
| * ceil(3.3) = 4, ceil(-3.3) = -3 |
| */ |
| U_CAPI double U_EXPORT2 |
| uprv_trunc(double d) |
| { |
| #if IEEE_754 |
| /* handle error cases*/ |
| if(uprv_isNaN(d)) |
| return uprv_getNaN(); |
| if(uprv_isInfinite(d)) |
| return uprv_getInfinity(); |
| |
| if(u_signBit(d)) /* Signbit() picks up -0.0; d<0 does not. */ |
| return ceil(d); |
| else |
| return floor(d); |
| |
| #else |
| return d >= 0 ? floor(d) : ceil(d); |
| |
| #endif |
| } |
| |
| /** |
| * Return the largest positive number that can be represented by an integer |
| * type of arbitrary bit length. |
| */ |
| U_CAPI double U_EXPORT2 |
| uprv_maxMantissa(void) |
| { |
| return pow(2.0, DBL_MANT_DIG + 1.0) - 1.0; |
| } |
| |
| U_CAPI double U_EXPORT2 |
| uprv_log(double d) |
| { |
| return log(d); |
| } |
| |
| U_CAPI void * U_EXPORT2 |
| uprv_maximumPtr(void * base) |
| { |
| #if U_PLATFORM == U_PF_OS400 |
| /* |
| * With the provided function we should never be out of range of a given segment |
| * (a traditional/typical segment that is). Our segments have 5 bytes for the |
| * id and 3 bytes for the offset. The key is that the casting takes care of |
| * only retrieving the offset portion minus x1000. Hence, the smallest offset |
| * seen in a program is x001000 and when casted to an int would be 0. |
| * That's why we can only add 0xffefff. Otherwise, we would exceed the segment. |
| * |
| * Currently, 16MB is the current addressing limitation on i5/OS if the activation is |
| * non-TERASPACE. If it is TERASPACE it is 2GB - 4k(header information). |
| * This function determines the activation based on the pointer that is passed in and |
| * calculates the appropriate maximum available size for |
| * each pointer type (TERASPACE and non-TERASPACE) |
| * |
| * Unlike other operating systems, the pointer model isn't determined at |
| * compile time on i5/OS. |
| */ |
| if ((base != NULL) && (_TESTPTR(base, _C_TERASPACE_CHECK))) { |
| /* if it is a TERASPACE pointer the max is 2GB - 4k */ |
| return ((void *)(((char *)base)-((uint32_t)(base))+((uint32_t)0x7fffefff))); |
| } |
| /* otherwise 16MB since NULL ptr is not checkable or the ptr is not TERASPACE */ |
| return ((void *)(((char *)base)-((uint32_t)(base))+((uint32_t)0xffefff))); |
| |
| #else |
| return U_MAX_PTR(base); |
| #endif |
| } |
| |
| /*--------------------------------------------------------------------------- |
| Platform-specific Implementations |
| Try these, and if they don't work on your platform, then special case your |
| platform with new implementations. |
| ---------------------------------------------------------------------------*/ |
| |
| /* Generic time zone layer -------------------------------------------------- */ |
| |
| /* Time zone utilities */ |
| U_CAPI void U_EXPORT2 |
| uprv_tzset() |
| { |
| #if defined(U_TZSET) |
| U_TZSET(); |
| #else |
| /* no initialization*/ |
| #endif |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| uprv_timezone() |
| { |
| #ifdef U_TIMEZONE |
| return U_TIMEZONE; |
| #else |
| time_t t, t1, t2; |
| struct tm tmrec; |
| int32_t tdiff = 0; |
| |
| time(&t); |
| uprv_memcpy( &tmrec, localtime(&t), sizeof(tmrec) ); |
| #if U_PLATFORM != U_PF_IPHONE |
| UBool dst_checked = (tmrec.tm_isdst != 0); /* daylight savings time is checked*/ |
| #endif |
| t1 = mktime(&tmrec); /* local time in seconds*/ |
| uprv_memcpy( &tmrec, gmtime(&t), sizeof(tmrec) ); |
| t2 = mktime(&tmrec); /* GMT (or UTC) in seconds*/ |
| tdiff = t2 - t1; |
| |
| #if U_PLATFORM != U_PF_IPHONE |
| /* imitate NT behaviour, which returns same timezone offset to GMT for |
| winter and summer. |
| This does not work on all platforms. For instance, on glibc on Linux |
| and on Mac OS 10.5, tdiff calculated above remains the same |
| regardless of whether DST is in effect or not. iOS is another |
| platform where this does not work. Linux + glibc and Mac OS 10.5 |
| have U_TIMEZONE defined so that this code is not reached. |
| */ |
| if (dst_checked) |
| tdiff += 3600; |
| #endif |
| return tdiff; |
| #endif |
| } |
| |
| /* Note that U_TZNAME does *not* have to be tzname, but if it is, |
| some platforms need to have it declared here. */ |
| |
| #if defined(U_TZNAME) && (U_PLATFORM == U_PF_IRIX || U_PLATFORM_IS_DARWIN_BASED) |
| /* RS6000 and others reject char **tzname. */ |
| extern U_IMPORT char *U_TZNAME[]; |
| #endif |
| |
| #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) |
| /* These platforms are likely to use Olson timezone IDs. */ |
| /* common targets of the symbolic link at TZDEFAULT are: |
| * "/usr/share/zoneinfo/<olsonID>" default, older Linux distros, macOS to 10.12 |
| * "../usr/share/zoneinfo/<olsonID>" newer Linux distros: Red Hat Enterprise Linux 7, Ubuntu 16, SuSe Linux 12 |
| * "/usr/share/lib/zoneinfo/<olsonID>" Solaris |
| * "../usr/share/lib/zoneinfo/<olsonID>" Solaris |
| * "/var/db/timezone/zoneinfo/<olsonID>" macOS 10.13 |
| * To avoid checking lots of paths, just check that the target path |
| * before the <olsonID> ends with "/zoneinfo/", and the <olsonID> is valid. |
| */ |
| |
| #define CHECK_LOCALTIME_LINK 1 |
| #if U_PLATFORM_IS_DARWIN_BASED |
| #include <tzfile.h> |
| #define TZZONEINFO (TZDIR "/") |
| #elif U_PLATFORM == U_PF_SOLARIS |
| #define TZDEFAULT "/etc/localtime" |
| #define TZZONEINFO "/usr/share/lib/zoneinfo/" |
| #define TZ_ENV_CHECK "localtime" |
| #else |
| #define TZDEFAULT "/etc/localtime" |
| #define TZZONEINFO "/usr/share/zoneinfo/" |
| #endif |
| #define TZZONEINFOTAIL "/zoneinfo/" |
| #if U_HAVE_DIRENT_H |
| #define TZFILE_SKIP "posixrules" /* tz file to skip when searching. */ |
| /* Some Linux distributions have 'localtime' in /usr/share/zoneinfo |
| symlinked to /etc/localtime, which makes searchForTZFile return |
| 'localtime' when it's the first match. */ |
| #define TZFILE_SKIP2 "localtime" |
| #define SEARCH_TZFILE |
| #include <dirent.h> /* Needed to search through system timezone files */ |
| #endif |
| static char gTimeZoneBuffer[PATH_MAX]; |
| static char *gTimeZoneBufferPtr = NULL; |
| #endif |
| |
| #if !U_PLATFORM_USES_ONLY_WIN32_API |
| #define isNonDigit(ch) (ch < '0' || '9' < ch) |
| #define isDigit(ch) ('0' <= ch && ch <= '9') |
| static UBool isValidOlsonID(const char *id) { |
| int32_t idx = 0; |
| int32_t idxMax = 0; |
| |
| /* Determine if this is something like Iceland (Olson ID) |
| or AST4ADT (non-Olson ID) */ |
| while (id[idx] && isNonDigit(id[idx]) && id[idx] != ',') { |
| idx++; |
| } |
| |
| /* Allow at maximum 2 numbers at the end of the id to support zone id's |
| like GMT+11. */ |
| idxMax = idx + 2; |
| while (id[idx] && isDigit(id[idx]) && idx < idxMax) { |
| idx++; |
| } |
| |
| /* If we went through the whole string, then it might be okay. |
| The timezone is sometimes set to "CST-7CDT", "CST6CDT5,J129,J131/19:30", |
| "GRNLNDST3GRNLNDDT" or similar, so we cannot use it. |
| The rest of the time it could be an Olson ID. George */ |
| return (UBool)(id[idx] == 0 |
| || uprv_strcmp(id, "PST8PDT") == 0 |
| || uprv_strcmp(id, "MST7MDT") == 0 |
| || uprv_strcmp(id, "CST6CDT") == 0 |
| || uprv_strcmp(id, "EST5EDT") == 0); |
| } |
| |
| /* On some Unix-like OS, 'posix' subdirectory in |
| /usr/share/zoneinfo replicates the top-level contents. 'right' |
| subdirectory has the same set of files, but individual files |
| are different from those in the top-level directory or 'posix' |
| because 'right' has files for TAI (Int'l Atomic Time) while 'posix' |
| has files for UTC. |
| When the first match for /etc/localtime is in either of them |
| (usually in posix because 'right' has different file contents), |
| or TZ environment variable points to one of them, createTimeZone |
| fails because, say, 'posix/America/New_York' is not an Olson |
| timezone id ('America/New_York' is). So, we have to skip |
| 'posix/' and 'right/' at the beginning. */ |
| static void skipZoneIDPrefix(const char** id) { |
| if (uprv_strncmp(*id, "posix/", 6) == 0 |
| || uprv_strncmp(*id, "right/", 6) == 0) |
| { |
| *id += 6; |
| } |
| } |
| #endif |
| |
| #if defined(U_TZNAME) && !U_PLATFORM_USES_ONLY_WIN32_API |
| |
| #define CONVERT_HOURS_TO_SECONDS(offset) (int32_t)(offset*3600) |
| typedef struct OffsetZoneMapping { |
| int32_t offsetSeconds; |
| int32_t daylightType; /* 0=U_DAYLIGHT_NONE, 1=daylight in June-U_DAYLIGHT_JUNE, 2=daylight in December=U_DAYLIGHT_DECEMBER*/ |
| const char *stdID; |
| const char *dstID; |
| const char *olsonID; |
| } OffsetZoneMapping; |
| |
| enum { U_DAYLIGHT_NONE=0,U_DAYLIGHT_JUNE=1,U_DAYLIGHT_DECEMBER=2 }; |
| |
| /* |
| This list tries to disambiguate a set of abbreviated timezone IDs and offsets |
| and maps it to an Olson ID. |
| Before adding anything to this list, take a look at |
| icu/source/tools/tzcode/tz.alias |
| Sometimes no daylight savings (0) is important to define due to aliases. |
| This list can be tested with icu/source/test/compat/tzone.pl |
| More values could be added to daylightType to increase precision. |
| */ |
| static const struct OffsetZoneMapping OFFSET_ZONE_MAPPINGS[] = { |
| {-45900, 2, "CHAST", "CHADT", "Pacific/Chatham"}, |
| {-43200, 1, "PETT", "PETST", "Asia/Kamchatka"}, |
| {-43200, 2, "NZST", "NZDT", "Pacific/Auckland"}, |
| {-43200, 1, "ANAT", "ANAST", "Asia/Anadyr"}, |
| {-39600, 1, "MAGT", "MAGST", "Asia/Magadan"}, |
| {-37800, 2, "LHST", "LHST", "Australia/Lord_Howe"}, |
| {-36000, 2, "EST", "EST", "Australia/Sydney"}, |
| {-36000, 1, "SAKT", "SAKST", "Asia/Sakhalin"}, |
| {-36000, 1, "VLAT", "VLAST", "Asia/Vladivostok"}, |
| {-34200, 2, "CST", "CST", "Australia/South"}, |
| {-32400, 1, "YAKT", "YAKST", "Asia/Yakutsk"}, |
| {-32400, 1, "CHOT", "CHOST", "Asia/Choibalsan"}, |
| {-31500, 2, "CWST", "CWST", "Australia/Eucla"}, |
| {-28800, 1, "IRKT", "IRKST", "Asia/Irkutsk"}, |
| {-28800, 1, "ULAT", "ULAST", "Asia/Ulaanbaatar"}, |
| {-28800, 2, "WST", "WST", "Australia/West"}, |
| {-25200, 1, "HOVT", "HOVST", "Asia/Hovd"}, |
| {-25200, 1, "KRAT", "KRAST", "Asia/Krasnoyarsk"}, |
| {-21600, 1, "NOVT", "NOVST", "Asia/Novosibirsk"}, |
| {-21600, 1, "OMST", "OMSST", "Asia/Omsk"}, |
| {-18000, 1, "YEKT", "YEKST", "Asia/Yekaterinburg"}, |
| {-14400, 1, "SAMT", "SAMST", "Europe/Samara"}, |
| {-14400, 1, "AMT", "AMST", "Asia/Yerevan"}, |
| {-14400, 1, "AZT", "AZST", "Asia/Baku"}, |
| {-10800, 1, "AST", "ADT", "Asia/Baghdad"}, |
| {-10800, 1, "MSK", "MSD", "Europe/Moscow"}, |
| {-10800, 1, "VOLT", "VOLST", "Europe/Volgograd"}, |
| {-7200, 0, "EET", "CEST", "Africa/Tripoli"}, |
| {-7200, 1, "EET", "EEST", "Europe/Athens"}, /* Conflicts with Africa/Cairo */ |
| {-7200, 1, "IST", "IDT", "Asia/Jerusalem"}, |
| {-3600, 0, "CET", "WEST", "Africa/Algiers"}, |
| {-3600, 2, "WAT", "WAST", "Africa/Windhoek"}, |
| {0, 1, "GMT", "IST", "Europe/Dublin"}, |
| {0, 1, "GMT", "BST", "Europe/London"}, |
| {0, 0, "WET", "WEST", "Africa/Casablanca"}, |
| {0, 0, "WET", "WET", "Africa/El_Aaiun"}, |
| {3600, 1, "AZOT", "AZOST", "Atlantic/Azores"}, |
| {3600, 1, "EGT", "EGST", "America/Scoresbysund"}, |
| {10800, 1, "PMST", "PMDT", "America/Miquelon"}, |
| {10800, 2, "UYT", "UYST", "America/Montevideo"}, |
| {10800, 1, "WGT", "WGST", "America/Godthab"}, |
| {10800, 2, "BRT", "BRST", "Brazil/East"}, |
| {12600, 1, "NST", "NDT", "America/St_Johns"}, |
| {14400, 1, "AST", "ADT", "Canada/Atlantic"}, |
| {14400, 2, "AMT", "AMST", "America/Cuiaba"}, |
| {14400, 2, "CLT", "CLST", "Chile/Continental"}, |
| {14400, 2, "FKT", "FKST", "Atlantic/Stanley"}, |
| {14400, 2, "PYT", "PYST", "America/Asuncion"}, |
| {18000, 1, "CST", "CDT", "America/Havana"}, |
| {18000, 1, "EST", "EDT", "US/Eastern"}, /* Conflicts with America/Grand_Turk */ |
| {21600, 2, "EAST", "EASST", "Chile/EasterIsland"}, |
| {21600, 0, "CST", "MDT", "Canada/Saskatchewan"}, |
| {21600, 0, "CST", "CDT", "America/Guatemala"}, |
| {21600, 1, "CST", "CDT", "US/Central"}, /* Conflicts with Mexico/General */ |
| {25200, 1, "MST", "MDT", "US/Mountain"}, /* Conflicts with Mexico/BajaSur */ |
| {28800, 0, "PST", "PST", "Pacific/Pitcairn"}, |
| {28800, 1, "PST", "PDT", "US/Pacific"}, /* Conflicts with Mexico/BajaNorte */ |
| {32400, 1, "AKST", "AKDT", "US/Alaska"}, |
| {36000, 1, "HAST", "HADT", "US/Aleutian"} |
| }; |
| |
| /*#define DEBUG_TZNAME*/ |
| |
| static const char* remapShortTimeZone(const char *stdID, const char *dstID, int32_t daylightType, int32_t offset) |
| { |
| int32_t idx; |
| #ifdef DEBUG_TZNAME |
| fprintf(stderr, "TZ=%s std=%s dst=%s daylight=%d offset=%d\n", getenv("TZ"), stdID, dstID, daylightType, offset); |
| #endif |
| for (idx = 0; idx < UPRV_LENGTHOF(OFFSET_ZONE_MAPPINGS); idx++) |
| { |
| if (offset == OFFSET_ZONE_MAPPINGS[idx].offsetSeconds |
| && daylightType == OFFSET_ZONE_MAPPINGS[idx].daylightType |
| && strcmp(OFFSET_ZONE_MAPPINGS[idx].stdID, stdID) == 0 |
| && strcmp(OFFSET_ZONE_MAPPINGS[idx].dstID, dstID) == 0) |
| { |
| return OFFSET_ZONE_MAPPINGS[idx].olsonID; |
| } |
| } |
| return NULL; |
| } |
| #endif |
| |
| #ifdef SEARCH_TZFILE |
| #define MAX_READ_SIZE 512 |
| |
| typedef struct DefaultTZInfo { |
| char* defaultTZBuffer; |
| int64_t defaultTZFileSize; |
| FILE* defaultTZFilePtr; |
| UBool defaultTZstatus; |
| int32_t defaultTZPosition; |
| } DefaultTZInfo; |
| |
| /* |
| * This method compares the two files given to see if they are a match. |
| * It is currently use to compare two TZ files. |
| */ |
| static UBool compareBinaryFiles(const char* defaultTZFileName, const char* TZFileName, DefaultTZInfo* tzInfo) { |
| FILE* file; |
| int64_t sizeFile; |
| int64_t sizeFileLeft; |
| int32_t sizeFileRead; |
| int32_t sizeFileToRead; |
| char bufferFile[MAX_READ_SIZE]; |
| UBool result = TRUE; |
| |
| if (tzInfo->defaultTZFilePtr == NULL) { |
| tzInfo->defaultTZFilePtr = fopen(defaultTZFileName, "r"); |
| } |
| file = fopen(TZFileName, "r"); |
| |
| tzInfo->defaultTZPosition = 0; /* reset position to begin search */ |
| |
| if (file != NULL && tzInfo->defaultTZFilePtr != NULL) { |
| /* First check that the file size are equal. */ |
| if (tzInfo->defaultTZFileSize == 0) { |
| fseek(tzInfo->defaultTZFilePtr, 0, SEEK_END); |
| tzInfo->defaultTZFileSize = ftell(tzInfo->defaultTZFilePtr); |
| } |
| fseek(file, 0, SEEK_END); |
| sizeFile = ftell(file); |
| sizeFileLeft = sizeFile; |
| |
| if (sizeFile != tzInfo->defaultTZFileSize) { |
| result = FALSE; |
| } else { |
| /* Store the data from the files in separate buffers and |
| * compare each byte to determine equality. |
| */ |
| if (tzInfo->defaultTZBuffer == NULL) { |
| rewind(tzInfo->defaultTZFilePtr); |
| tzInfo->defaultTZBuffer = (char*)uprv_malloc(sizeof(char) * tzInfo->defaultTZFileSize); |
| sizeFileRead = fread(tzInfo->defaultTZBuffer, 1, tzInfo->defaultTZFileSize, tzInfo->defaultTZFilePtr); |
| } |
| rewind(file); |
| while(sizeFileLeft > 0) { |
| uprv_memset(bufferFile, 0, MAX_READ_SIZE); |
| sizeFileToRead = sizeFileLeft < MAX_READ_SIZE ? sizeFileLeft : MAX_READ_SIZE; |
| |
| sizeFileRead = fread(bufferFile, 1, sizeFileToRead, file); |
| if (memcmp(tzInfo->defaultTZBuffer + tzInfo->defaultTZPosition, bufferFile, sizeFileRead) != 0) { |
| result = FALSE; |
| break; |
| } |
| sizeFileLeft -= sizeFileRead; |
| tzInfo->defaultTZPosition += sizeFileRead; |
| } |
| } |
| } else { |
| result = FALSE; |
| } |
| |
| if (file != NULL) { |
| fclose(file); |
| } |
| |
| return result; |
| } |
| |
| |
| /* dirent also lists two entries: "." and ".." that we can safely ignore. */ |
| #define SKIP1 "." |
| #define SKIP2 ".." |
| static UBool U_CALLCONV putil_cleanup(void); |
| static CharString *gSearchTZFileResult = NULL; |
| |
| /* |
| * This method recursively traverses the directory given for a matching TZ file and returns the first match. |
| * This function is not thread safe - it uses a global, gSearchTZFileResult, to hold its results. |
| */ |
| static char* searchForTZFile(const char* path, DefaultTZInfo* tzInfo) { |
| DIR* dirp = NULL; |
| struct dirent* dirEntry = NULL; |
| char* result = NULL; |
| UErrorCode status = U_ZERO_ERROR; |
| |
| /* Save the current path */ |
| CharString curpath(path, -1, status); |
| if (U_FAILURE(status)) { |
| goto cleanupAndReturn; |
| } |
| |
| dirp = opendir(path); |
| if (dirp == NULL) { |
| goto cleanupAndReturn; |
| } |
| |
| if (gSearchTZFileResult == NULL) { |
| gSearchTZFileResult = new CharString; |
| if (gSearchTZFileResult == NULL) { |
| goto cleanupAndReturn; |
| } |
| ucln_common_registerCleanup(UCLN_COMMON_PUTIL, putil_cleanup); |
| } |
| |
| /* Check each entry in the directory. */ |
| while((dirEntry = readdir(dirp)) != NULL) { |
| const char* dirName = dirEntry->d_name; |
| if (uprv_strcmp(dirName, SKIP1) != 0 && uprv_strcmp(dirName, SKIP2) != 0 |
| && uprv_strcmp(TZFILE_SKIP, dirName) != 0 && uprv_strcmp(TZFILE_SKIP2, dirName) != 0) { |
| /* Create a newpath with the new entry to test each entry in the directory. */ |
| CharString newpath(curpath, status); |
| newpath.append(dirName, -1, status); |
| if (U_FAILURE(status)) { |
| break; |
| } |
| |
| DIR* subDirp = NULL; |
| if ((subDirp = opendir(newpath.data())) != NULL) { |
| /* If this new path is a directory, make a recursive call with the newpath. */ |
| closedir(subDirp); |
| newpath.append('/', status); |
| if (U_FAILURE(status)) { |
| break; |
| } |
| result = searchForTZFile(newpath.data(), tzInfo); |
| /* |
| Have to get out here. Otherwise, we'd keep looking |
| and return the first match in the top-level directory |
| if there's a match in the top-level. If not, this function |
| would return NULL and set gTimeZoneBufferPtr to NULL in initDefault(). |
| It worked without this in most cases because we have a fallback of calling |
| localtime_r to figure out the default timezone. |
| */ |
| if (result != NULL) |
| break; |
| } else { |
| if(compareBinaryFiles(TZDEFAULT, newpath.data(), tzInfo)) { |
| int32_t amountToSkip = sizeof(TZZONEINFO) - 1; |
| if (amountToSkip > newpath.length()) { |
| amountToSkip = newpath.length(); |
| } |
| const char* zoneid = newpath.data() + amountToSkip; |
| skipZoneIDPrefix(&zoneid); |
| gSearchTZFileResult->clear(); |
| gSearchTZFileResult->append(zoneid, -1, status); |
| if (U_FAILURE(status)) { |
| break; |
| } |
| result = gSearchTZFileResult->data(); |
| /* Get out after the first one found. */ |
| break; |
| } |
| } |
| } |
| } |
| |
| cleanupAndReturn: |
| if (dirp) { |
| closedir(dirp); |
| } |
| return result; |
| } |
| #endif |
| |
| #if U_PLATFORM == U_PF_ANDROID |
| typedef int(system_property_read_callback)(const prop_info* info, |
| void (*callback)(void* cookie, |
| const char* name, |
| const char* value, |
| uint32_t serial), |
| void* cookie); |
| typedef int(system_property_get)(const char*, char*); |
| |
| static char gAndroidTimeZone[PROP_VALUE_MAX] = { '\0' }; |
| |
| static void u_property_read(void* cookie, const char* name, const char* value, |
| uint32_t serial) { |
| uprv_strcpy((char* )cookie, value); |
| } |
| #endif |
| |
| U_CAPI void U_EXPORT2 |
| uprv_tzname_clear_cache(void) |
| { |
| #if U_PLATFORM == U_PF_ANDROID |
| /* Android's timezone is stored in system property. */ |
| gAndroidTimeZone[0] = '\0'; |
| void* libc = dlopen("libc.so", RTLD_NOLOAD); |
| if (libc) { |
| /* Android API 26+ has new API to get system property and old API |
| * (__system_property_get) is deprecated */ |
| system_property_read_callback* property_read_callback = |
| (system_property_read_callback*)dlsym( |
| libc, "__system_property_read_callback"); |
| if (property_read_callback) { |
| const prop_info* info = |
| __system_property_find("persist.sys.timezone"); |
| if (info) { |
| property_read_callback(info, &u_property_read, gAndroidTimeZone); |
| } |
| } else { |
| system_property_get* property_get = |
| (system_property_get*)dlsym(libc, "__system_property_get"); |
| if (property_get) { |
| property_get("persist.sys.timezone", gAndroidTimeZone); |
| } |
| } |
| dlclose(libc); |
| } |
| #endif |
| |
| #if defined(CHECK_LOCALTIME_LINK) && !defined(DEBUG_SKIP_LOCALTIME_LINK) |
| gTimeZoneBufferPtr = NULL; |
| #endif |
| } |
| |
| U_CAPI const char* U_EXPORT2 |
| uprv_tzname(int n) |
| { |
| (void)n; // Avoid unreferenced parameter warning. |
| const char *tzid = NULL; |
| #if U_PLATFORM_USES_ONLY_WIN32_API |
| tzid = uprv_detectWindowsTimeZone(); |
| |
| if (tzid != NULL) { |
| return tzid; |
| } |
| |
| #ifndef U_TZNAME |
| // The return value is free'd in timezone.cpp on Windows because |
| // the other code path returns a pointer to a heap location. |
| // If we don't have a name already, then tzname wouldn't be any |
| // better, so just fall back. |
| return uprv_strdup(""); |
| #endif // !U_TZNAME |
| |
| #else |
| |
| /*#if U_PLATFORM_IS_DARWIN_BASED |
| int ret; |
| |
| tzid = getenv("TZFILE"); |
| if (tzid != NULL) { |
| return tzid; |
| } |
| #endif*/ |
| |
| /* This code can be temporarily disabled to test tzname resolution later on. */ |
| #ifndef DEBUG_TZNAME |
| #if U_PLATFORM == U_PF_ANDROID |
| tzid = gAndroidTimeZone; |
| #else |
| tzid = getenv("TZ"); |
| #endif |
| if (tzid != NULL && isValidOlsonID(tzid) |
| #if U_PLATFORM == U_PF_SOLARIS |
| /* Don't misinterpret TZ "localtime" on Solaris as a time zone name. */ |
| && uprv_strcmp(tzid, TZ_ENV_CHECK) != 0 |
| #endif |
| ) { |
| /* The colon forces tzset() to treat the remainder as zoneinfo path */ |
| if (tzid[0] == ':') { |
| tzid++; |
| } |
| /* This might be a good Olson ID. */ |
| skipZoneIDPrefix(&tzid); |
| return tzid; |
| } |
| /* else U_TZNAME will give a better result. */ |
| #endif |
| |
| #if defined(CHECK_LOCALTIME_LINK) && !defined(DEBUG_SKIP_LOCALTIME_LINK) |
| /* Caller must handle threading issues */ |
| if (gTimeZoneBufferPtr == NULL) { |
| /* |
| This is a trick to look at the name of the link to get the Olson ID |
| because the tzfile contents is underspecified. |
| This isn't guaranteed to work because it may not be a symlink. |
| */ |
| int32_t ret = (int32_t)readlink(TZDEFAULT, gTimeZoneBuffer, sizeof(gTimeZoneBuffer)-1); |
| if (0 < ret) { |
| int32_t tzZoneInfoTailLen = uprv_strlen(TZZONEINFOTAIL); |
| gTimeZoneBuffer[ret] = 0; |
| char * tzZoneInfoTailPtr = uprv_strstr(gTimeZoneBuffer, TZZONEINFOTAIL); |
| |
| if (tzZoneInfoTailPtr != NULL |
| && isValidOlsonID(tzZoneInfoTailPtr + tzZoneInfoTailLen)) |
| { |
| return (gTimeZoneBufferPtr = tzZoneInfoTailPtr + tzZoneInfoTailLen); |
| } |
| } else { |
| #if defined(SEARCH_TZFILE) |
| DefaultTZInfo* tzInfo = (DefaultTZInfo*)uprv_malloc(sizeof(DefaultTZInfo)); |
| if (tzInfo != NULL) { |
| tzInfo->defaultTZBuffer = NULL; |
| tzInfo->defaultTZFileSize = 0; |
| tzInfo->defaultTZFilePtr = NULL; |
| tzInfo->defaultTZstatus = FALSE; |
| tzInfo->defaultTZPosition = 0; |
| |
| gTimeZoneBufferPtr = searchForTZFile(TZZONEINFO, tzInfo); |
| |
| /* Free previously allocated memory */ |
| if (tzInfo->defaultTZBuffer != NULL) { |
| uprv_free(tzInfo->defaultTZBuffer); |
| } |
| if (tzInfo->defaultTZFilePtr != NULL) { |
| fclose(tzInfo->defaultTZFilePtr); |
| } |
| uprv_free(tzInfo); |
| } |
| |
| if (gTimeZoneBufferPtr != NULL && isValidOlsonID(gTimeZoneBufferPtr)) { |
| return gTimeZoneBufferPtr; |
| } |
| #endif |
| } |
| } |
| else { |
| return gTimeZoneBufferPtr; |
| } |
| #endif |
| #endif |
| |
| #ifdef U_TZNAME |
| #if U_PLATFORM_USES_ONLY_WIN32_API |
| /* The return value is free'd in timezone.cpp on Windows because |
| * the other code path returns a pointer to a heap location. */ |
| return uprv_strdup(U_TZNAME[n]); |
| #else |
| /* |
| U_TZNAME is usually a non-unique abbreviation, which isn't normally usable. |
| So we remap the abbreviation to an olson ID. |
| |
| Since Windows exposes a little more timezone information, |
| we normally don't use this code on Windows because |
| uprv_detectWindowsTimeZone should have already given the correct answer. |
| */ |
| { |
| struct tm juneSol, decemberSol; |
| int daylightType; |
| static const time_t juneSolstice=1182478260; /*2007-06-21 18:11 UT*/ |
| static const time_t decemberSolstice=1198332540; /*2007-12-22 06:09 UT*/ |
| |
| /* This probing will tell us when daylight savings occurs. */ |
| localtime_r(&juneSolstice, &juneSol); |
| localtime_r(&decemberSolstice, &decemberSol); |
| if(decemberSol.tm_isdst > 0) { |
| daylightType = U_DAYLIGHT_DECEMBER; |
| } else if(juneSol.tm_isdst > 0) { |
| daylightType = U_DAYLIGHT_JUNE; |
| } else { |
| daylightType = U_DAYLIGHT_NONE; |
| } |
| tzid = remapShortTimeZone(U_TZNAME[0], U_TZNAME[1], daylightType, uprv_timezone()); |
| if (tzid != NULL) { |
| return tzid; |
| } |
| } |
| return U_TZNAME[n]; |
| #endif |
| #else |
| return ""; |
| #endif |
| } |
| |
| /* Get and set the ICU data directory --------------------------------------- */ |
| |
| static icu::UInitOnce gDataDirInitOnce {}; |
| static char *gDataDirectory = NULL; |
| |
| UInitOnce gTimeZoneFilesInitOnce {}; |
| static CharString *gTimeZoneFilesDirectory = NULL; |
| |
| #if U_POSIX_LOCALE || U_PLATFORM_USES_ONLY_WIN32_API |
| static const char *gCorrectedPOSIXLocale = NULL; /* Sometimes heap allocated */ |
| static bool gCorrectedPOSIXLocaleHeapAllocated = false; |
| #endif |
| |
| static UBool U_CALLCONV putil_cleanup(void) |
| { |
| if (gDataDirectory && *gDataDirectory) { |
| uprv_free(gDataDirectory); |
| } |
| gDataDirectory = NULL; |
| gDataDirInitOnce.reset(); |
| |
| delete gTimeZoneFilesDirectory; |
| gTimeZoneFilesDirectory = NULL; |
| gTimeZoneFilesInitOnce.reset(); |
| |
| #ifdef SEARCH_TZFILE |
| delete gSearchTZFileResult; |
| gSearchTZFileResult = NULL; |
| #endif |
| |
| #if U_POSIX_LOCALE || U_PLATFORM_USES_ONLY_WIN32_API |
| if (gCorrectedPOSIXLocale && gCorrectedPOSIXLocaleHeapAllocated) { |
| uprv_free(const_cast<char *>(gCorrectedPOSIXLocale)); |
| gCorrectedPOSIXLocale = NULL; |
| gCorrectedPOSIXLocaleHeapAllocated = false; |
| } |
| #endif |
| return TRUE; |
| } |
| |
| /* |
| * Set the data directory. |
| * Make a copy of the passed string, and set the global data dir to point to it. |
| */ |
| U_CAPI void U_EXPORT2 |
| u_setDataDirectory(const char *directory) { |
| char *newDataDir; |
| int32_t length; |
| |
| if(directory==NULL || *directory==0) { |
| /* A small optimization to prevent the malloc and copy when the |
| shared library is used, and this is a way to make sure that NULL |
| is never returned. |
| */ |
| newDataDir = (char *)""; |
| } |
| else { |
| length=(int32_t)uprv_strlen(directory); |
| newDataDir = (char *)uprv_malloc(length + 2); |
| /* Exit out if newDataDir could not be created. */ |
| if (newDataDir == NULL) { |
| return; |
| } |
| uprv_strcpy(newDataDir, directory); |
| |
| #if (U_FILE_SEP_CHAR != U_FILE_ALT_SEP_CHAR) |
| { |
| char *p; |
| while((p = uprv_strchr(newDataDir, U_FILE_ALT_SEP_CHAR)) != NULL) { |
| *p = U_FILE_SEP_CHAR; |
| } |
| } |
| #endif |
| } |
| |
| if (gDataDirectory && *gDataDirectory) { |
| uprv_free(gDataDirectory); |
| } |
| gDataDirectory = newDataDir; |
| ucln_common_registerCleanup(UCLN_COMMON_PUTIL, putil_cleanup); |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| uprv_pathIsAbsolute(const char *path) |
| { |
| if(!path || !*path) { |
| return FALSE; |
| } |
| |
| if(*path == U_FILE_SEP_CHAR) { |
| return TRUE; |
| } |
| |
| #if (U_FILE_SEP_CHAR != U_FILE_ALT_SEP_CHAR) |
| if(*path == U_FILE_ALT_SEP_CHAR) { |
| return TRUE; |
| } |
| #endif |
| |
| #if U_PLATFORM_USES_ONLY_WIN32_API |
| if( (((path[0] >= 'A') && (path[0] <= 'Z')) || |
| ((path[0] >= 'a') && (path[0] <= 'z'))) && |
| path[1] == ':' ) { |
| return TRUE; |
| } |
| #endif |
| |
| return FALSE; |
| } |
| |
| /* Backup setting of ICU_DATA_DIR_PREFIX_ENV_VAR |
| (needed for some Darwin ICU build environments) */ |
| #if U_PLATFORM_IS_DARWIN_BASED && defined(TARGET_OS_SIMULATOR) && TARGET_OS_SIMULATOR |
| # if !defined(ICU_DATA_DIR_PREFIX_ENV_VAR) |
| # define ICU_DATA_DIR_PREFIX_ENV_VAR "IPHONE_SIMULATOR_ROOT" |
| # endif |
| #endif |
| |
| #if defined(ICU_DATA_DIR_WINDOWS) |
| // Helper function to get the ICU Data Directory under the Windows directory location. |
| static BOOL U_CALLCONV getIcuDataDirectoryUnderWindowsDirectory(char* directoryBuffer, UINT bufferLength) |
| { |
| wchar_t windowsPath[MAX_PATH]; |
| char windowsPathUtf8[MAX_PATH]; |
| |
| UINT length = GetSystemWindowsDirectoryW(windowsPath, UPRV_LENGTHOF(windowsPath)); |
| if ((length > 0) && (length < (UPRV_LENGTHOF(windowsPath) - 1))) { |
| // Convert UTF-16 to a UTF-8 string. |
| UErrorCode status = U_ZERO_ERROR; |
| int32_t windowsPathUtf8Len = 0; |
| u_strToUTF8(windowsPathUtf8, static_cast<int32_t>(UPRV_LENGTHOF(windowsPathUtf8)), |
| &windowsPathUtf8Len, reinterpret_cast<const UChar*>(windowsPath), -1, &status); |
| |
| if (U_SUCCESS(status) && (status != U_STRING_NOT_TERMINATED_WARNING) && |
| (windowsPathUtf8Len < (UPRV_LENGTHOF(windowsPathUtf8) - 1))) { |
| // Ensure it always has a separator, so we can append the ICU data path. |
| if (windowsPathUtf8[windowsPathUtf8Len - 1] != U_FILE_SEP_CHAR) { |
| windowsPathUtf8[windowsPathUtf8Len++] = U_FILE_SEP_CHAR; |
| windowsPathUtf8[windowsPathUtf8Len] = '\0'; |
| } |
| // Check if the concatenated string will fit. |
| if ((windowsPathUtf8Len + UPRV_LENGTHOF(ICU_DATA_DIR_WINDOWS)) < bufferLength) { |
| uprv_strcpy(directoryBuffer, windowsPathUtf8); |
| uprv_strcat(directoryBuffer, ICU_DATA_DIR_WINDOWS); |
| return TRUE; |
| } |
| } |
| } |
| |
| return FALSE; |
| } |
| #endif |
| |
| static void U_CALLCONV dataDirectoryInitFn() { |
| /* If we already have the directory, then return immediately. Will happen if user called |
| * u_setDataDirectory(). |
| */ |
| if (gDataDirectory) { |
| return; |
| } |
| |
| const char *path = NULL; |
| #if defined(ICU_DATA_DIR_PREFIX_ENV_VAR) |
| char datadir_path_buffer[PATH_MAX]; |
| #endif |
| |
| /* |
| When ICU_NO_USER_DATA_OVERRIDE is defined, users aren't allowed to |
| override ICU's data with the ICU_DATA environment variable. This prevents |
| problems where multiple custom copies of ICU's specific version of data |
| are installed on a system. Either the application must define the data |
| directory with u_setDataDirectory, define ICU_DATA_DIR when compiling |
| ICU, set the data with udata_setCommonData or trust that all of the |
| required data is contained in ICU's data library that contains |
| the entry point defined by U_ICUDATA_ENTRY_POINT. |
| |
| There may also be some platforms where environment variables |
| are not allowed. |
| */ |
| # if !defined(ICU_NO_USER_DATA_OVERRIDE) && !UCONFIG_NO_FILE_IO |
| /* First try to get the environment variable */ |
| # if U_PLATFORM_HAS_WINUWP_API == 0 // Windows UWP does not support getenv |
| path=getenv("ICU_DATA"); |
| # endif |
| # endif |
| |
| /* ICU_DATA_DIR may be set as a compile option. |
| * U_ICU_DATA_DEFAULT_DIR is provided and is set by ICU at compile time |
| * and is used only when data is built in archive mode eliminating the need |
| * for ICU_DATA_DIR to be set. U_ICU_DATA_DEFAULT_DIR is set to the installation |
| * directory of the data dat file. Users should use ICU_DATA_DIR if they want to |
| * set their own path. |
| */ |
| #if defined(ICU_DATA_DIR) || defined(U_ICU_DATA_DEFAULT_DIR) |
| if(path==NULL || *path==0) { |
| # if defined(ICU_DATA_DIR_PREFIX_ENV_VAR) |
| const char *prefix = getenv(ICU_DATA_DIR_PREFIX_ENV_VAR); |
| # endif |
| # ifdef ICU_DATA_DIR |
| path=ICU_DATA_DIR; |
| # else |
| path=U_ICU_DATA_DEFAULT_DIR; |
| # endif |
| # if defined(ICU_DATA_DIR_PREFIX_ENV_VAR) |
| if (prefix != NULL) { |
| snprintf(datadir_path_buffer, PATH_MAX, "%s%s", prefix, path); |
| path=datadir_path_buffer; |
| } |
| # endif |
| } |
| #endif |
| |
| #if defined(ICU_DATA_DIR_WINDOWS) |
| char datadir_path_buffer[MAX_PATH]; |
| if (getIcuDataDirectoryUnderWindowsDirectory(datadir_path_buffer, UPRV_LENGTHOF(datadir_path_buffer))) { |
| path = datadir_path_buffer; |
| } |
| #endif |
| |
| if(path==NULL) { |
| /* It looks really bad, set it to something. */ |
| path = ""; |
| } |
| |
| u_setDataDirectory(path); |
| return; |
| } |
| |
| U_CAPI const char * U_EXPORT2 |
| u_getDataDirectory(void) { |
| umtx_initOnce(gDataDirInitOnce, &dataDirectoryInitFn); |
| return gDataDirectory; |
| } |
| |
| static void setTimeZoneFilesDir(const char *path, UErrorCode &status) { |
| if (U_FAILURE(status)) { |
| return; |
| } |
| gTimeZoneFilesDirectory->clear(); |
| gTimeZoneFilesDirectory->append(path, status); |
| #if (U_FILE_SEP_CHAR != U_FILE_ALT_SEP_CHAR) |
| char *p = gTimeZoneFilesDirectory->data(); |
| while ((p = uprv_strchr(p, U_FILE_ALT_SEP_CHAR)) != NULL) { |
| *p = U_FILE_SEP_CHAR; |
| } |
| #endif |
| } |
| |
| #define TO_STRING(x) TO_STRING_2(x) |
| #define TO_STRING_2(x) #x |
| |
| static void U_CALLCONV TimeZoneDataDirInitFn(UErrorCode &status) { |
| U_ASSERT(gTimeZoneFilesDirectory == NULL); |
| ucln_common_registerCleanup(UCLN_COMMON_PUTIL, putil_cleanup); |
| gTimeZoneFilesDirectory = new CharString(); |
| if (gTimeZoneFilesDirectory == NULL) { |
| status = U_MEMORY_ALLOCATION_ERROR; |
| return; |
| } |
| |
| const char *dir = ""; |
| |
| #if defined(ICU_TIMEZONE_FILES_DIR_PREFIX_ENV_VAR) |
| char timezonefilesdir_path_buffer[PATH_MAX]; |
| const char *prefix = getenv(ICU_TIMEZONE_FILES_DIR_PREFIX_ENV_VAR); |
| #endif |
| |
| #if U_PLATFORM_HAS_WINUWP_API == 1 |
| // The UWP version does not support the environment variable setting. |
| |
| # if defined(ICU_DATA_DIR_WINDOWS) |
| // When using the Windows system data, we can possibly pick up time zone data from the Windows directory. |
| char datadir_path_buffer[MAX_PATH]; |
| if (getIcuDataDirectoryUnderWindowsDirectory(datadir_path_buffer, UPRV_LENGTHOF(datadir_path_buffer))) { |
| dir = datadir_path_buffer; |
| } |
| # endif |
| |
| #else |
| dir = getenv("ICU_TIMEZONE_FILES_DIR"); |
| #endif // U_PLATFORM_HAS_WINUWP_API |
| |
| #if defined(U_TIMEZONE_FILES_DIR) |
| if (dir == NULL) { |
| // Build time configuration setting. |
| dir = TO_STRING(U_TIMEZONE_FILES_DIR); |
| } |
| #endif |
| |
| if (dir == NULL) { |
| dir = ""; |
| } |
| |
| #if defined(ICU_TIMEZONE_FILES_DIR_PREFIX_ENV_VAR) |
| if (prefix != NULL) { |
| snprintf(timezonefilesdir_path_buffer, PATH_MAX, "%s%s", prefix, dir); |
| dir = timezonefilesdir_path_buffer; |
| } |
| #endif |
| |
| setTimeZoneFilesDir(dir, status); |
| } |
| |
| |
| U_CAPI const char * U_EXPORT2 |
| u_getTimeZoneFilesDirectory(UErrorCode *status) { |
| umtx_initOnce(gTimeZoneFilesInitOnce, &TimeZoneDataDirInitFn, *status); |
| return U_SUCCESS(*status) ? gTimeZoneFilesDirectory->data() : ""; |
| } |
| |
| U_CAPI void U_EXPORT2 |
| u_setTimeZoneFilesDirectory(const char *path, UErrorCode *status) { |
| umtx_initOnce(gTimeZoneFilesInitOnce, &TimeZoneDataDirInitFn, *status); |
| setTimeZoneFilesDir(path, *status); |
| |
| // Note: this function does some extra churn, first setting based on the |
| // environment, then immediately replacing with the value passed in. |
| // The logic is simpler that way, and performance shouldn't be an issue. |
| } |
| |
| |
| #if U_POSIX_LOCALE |
| /* A helper function used by uprv_getPOSIXIDForDefaultLocale and |
| * uprv_getPOSIXIDForDefaultCodepage. Returns the posix locale id for |
| * LC_CTYPE and LC_MESSAGES. It doesn't support other locale categories. |
| */ |
| static const char *uprv_getPOSIXIDForCategory(int category) |
| { |
| const char* posixID = NULL; |
| if (category == LC_MESSAGES || category == LC_CTYPE) { |
| /* |
| * On Solaris two different calls to setlocale can result in |
| * different values. Only get this value once. |
| * |
| * We must check this first because an application can set this. |
| * |
| * LC_ALL can't be used because it's platform dependent. The LANG |
| * environment variable seems to affect LC_CTYPE variable by default. |
| * Here is what setlocale(LC_ALL, NULL) can return. |
| * HPUX can return 'C C C C C C C' |
| * Solaris can return /en_US/C/C/C/C/C on the second try. |
| * Linux can return LC_CTYPE=C;LC_NUMERIC=C;... |
| * |
| * The default codepage detection also needs to use LC_CTYPE. |
| * |
| * Do not call setlocale(LC_*, "")! Using an empty string instead |
| * of NULL, will modify the libc behavior. |
| */ |
| posixID = setlocale(category, NULL); |
| if ((posixID == 0) |
| || (uprv_strcmp("C", posixID) == 0) |
| || (uprv_strcmp("POSIX", posixID) == 0)) |
| { |
| /* Maybe we got some garbage. Try something more reasonable */ |
| posixID = getenv("LC_ALL"); |
| /* Solaris speaks POSIX - See IEEE Std 1003.1-2008 |
| * This is needed to properly handle empty env. variables |
| */ |
| #if U_PLATFORM == U_PF_SOLARIS |
| if ((posixID == 0) || (posixID[0] == '\0')) { |
| posixID = getenv(category == LC_MESSAGES ? "LC_MESSAGES" : "LC_CTYPE"); |
| if ((posixID == 0) || (posixID[0] == '\0')) { |
| #else |
| if (posixID == 0) { |
| posixID = getenv(category == LC_MESSAGES ? "LC_MESSAGES" : "LC_CTYPE"); |
| if (posixID == 0) { |
| #endif |
| posixID = getenv("LANG"); |
| } |
| } |
| } |
| } |
| if ((posixID==0) |
| || (uprv_strcmp("C", posixID) == 0) |
| || (uprv_strcmp("POSIX", posixID) == 0)) |
| { |
| /* Nothing worked. Give it a nice POSIX default value. */ |
| posixID = "en_US_POSIX"; |
| // Note: this test will not catch 'C.UTF-8', |
| // that will be handled in uprv_getDefaultLocaleID(). |
| // Leave this mapping here for the uprv_getPOSIXIDForDefaultCodepage() |
| // caller which expects to see "en_US_POSIX" in many branches. |
| } |
| return posixID; |
| } |
| |
| /* Return just the POSIX id for the default locale, whatever happens to be in |
| * it. It gets the value from LC_MESSAGES and indirectly from LC_ALL and LANG. |
| */ |
| static const char *uprv_getPOSIXIDForDefaultLocale(void) |
| { |
| static const char* posixID = NULL; |
| if (posixID == 0) { |
| posixID = uprv_getPOSIXIDForCategory(LC_MESSAGES); |
| } |
| return posixID; |
| } |
| |
| #if !U_CHARSET_IS_UTF8 |
| /* Return just the POSIX id for the default codepage, whatever happens to be in |
| * it. It gets the value from LC_CTYPE and indirectly from LC_ALL and LANG. |
| */ |
| static const char *uprv_getPOSIXIDForDefaultCodepage(void) |
| { |
| static const char* posixID = NULL; |
| if (posixID == 0) { |
| posixID = uprv_getPOSIXIDForCategory(LC_CTYPE); |
| } |
| return posixID; |
| } |
| #endif |
| #endif |
| |
| /* NOTE: The caller should handle thread safety */ |
| U_CAPI const char* U_EXPORT2 |
| uprv_getDefaultLocaleID() |
| { |
| #if U_POSIX_LOCALE |
| /* |
| Note that: (a '!' means the ID is improper somehow) |
| LC_ALL ----> default_loc codepage |
| -------------------------------------------------------- |
| ab.CD ab CD |
| ab@CD ab__CD - |
| ab@CD.EF ab__CD EF |
| |
| ab_CD.EF@GH ab_CD_GH EF |
| |
| Some 'improper' ways to do the same as above: |
| ! ab_CD@GH.EF ab_CD_GH EF |
| ! ab_CD.EF@GH.IJ ab_CD_GH EF |
| ! ab_CD@ZZ.EF@GH.IJ ab_CD_GH EF |
| |
| _CD@GH _CD_GH - |
| _CD.EF@GH _CD_GH EF |
| |
| The variant cannot have dots in it. |
| The 'rightmost' variant (@xxx) wins. |
| The leftmost codepage (.xxx) wins. |
| */ |
| const char* posixID = uprv_getPOSIXIDForDefaultLocale(); |
| |
| /* Format: (no spaces) |
| ll [ _CC ] [ . MM ] [ @ VV] |
| |
| l = lang, C = ctry, M = charmap, V = variant |
| */ |
| |
| if (gCorrectedPOSIXLocale != nullptr) { |
| return gCorrectedPOSIXLocale; |
| } |
| |
| // Copy the ID into owned memory. |
| // Over-allocate in case we replace "C" with "en_US_POSIX" (+10), + null termination |
| char *correctedPOSIXLocale = static_cast<char *>(uprv_malloc(uprv_strlen(posixID) + 10 + 1)); |
| if (correctedPOSIXLocale == nullptr) { |
| return nullptr; |
| } |
| uprv_strcpy(correctedPOSIXLocale, posixID); |
| |
| char *limit; |
| if ((limit = uprv_strchr(correctedPOSIXLocale, '.')) != nullptr) { |
| *limit = 0; |
| } |
| if ((limit = uprv_strchr(correctedPOSIXLocale, '@')) != nullptr) { |
| *limit = 0; |
| } |
| |
| if ((uprv_strcmp("C", correctedPOSIXLocale) == 0) // no @ variant |
| || (uprv_strcmp("POSIX", correctedPOSIXLocale) == 0)) { |
| // Raw input was C.* or POSIX.*, Give it a nice POSIX default value. |
| // (The "C"/"POSIX" case is handled in uprv_getPOSIXIDForCategory()) |
| uprv_strcpy(correctedPOSIXLocale, "en_US_POSIX"); |
| } |
| |
| /* Note that we scan the *uncorrected* ID. */ |
| const char *p; |
| if ((p = uprv_strrchr(posixID, '@')) != nullptr) { |
| p++; |
| |
| /* Take care of any special cases here.. */ |
| if (!uprv_strcmp(p, "nynorsk")) { |
| p = "NY"; |
| /* Don't worry about no__NY. In practice, it won't appear. */ |
| } |
| |
| if (uprv_strchr(correctedPOSIXLocale,'_') == nullptr) { |
| uprv_strcat(correctedPOSIXLocale, "__"); /* aa@b -> aa__b (note this can make the new locale 1 char longer) */ |
| } |
| else { |
| uprv_strcat(correctedPOSIXLocale, "_"); /* aa_CC@b -> aa_CC_b */ |
| } |
| |
| const char *q; |
| if ((q = uprv_strchr(p, '.')) != nullptr) { |
| /* How big will the resulting string be? */ |
| int32_t len = (int32_t)(uprv_strlen(correctedPOSIXLocale) + (q-p)); |
| uprv_strncat(correctedPOSIXLocale, p, q-p); // do not include charset |
| correctedPOSIXLocale[len] = 0; |
| } |
| else { |
| /* Anything following the @ sign */ |
| uprv_strcat(correctedPOSIXLocale, p); |
| } |
| |
| /* Should there be a map from 'no@nynorsk' -> no_NO_NY here? |
| * How about 'russian' -> 'ru'? |
| * Many of the other locales using ISO codes will be handled by the |
| * canonicalization functions in uloc_getDefault. |
| */ |
| } |
| |
| if (gCorrectedPOSIXLocale == nullptr) { |
| gCorrectedPOSIXLocale = correctedPOSIXLocale; |
| gCorrectedPOSIXLocaleHeapAllocated = true; |
| ucln_common_registerCleanup(UCLN_COMMON_PUTIL, putil_cleanup); |
| correctedPOSIXLocale = nullptr; |
| } |
| posixID = gCorrectedPOSIXLocale; |
| |
| if (correctedPOSIXLocale != nullptr) { /* Was already set - clean up. */ |
| uprv_free(correctedPOSIXLocale); |
| } |
| |
| return posixID; |
| |
| #elif U_PLATFORM_USES_ONLY_WIN32_API |
| #define POSIX_LOCALE_CAPACITY 64 |
| UErrorCode status = U_ZERO_ERROR; |
| char *correctedPOSIXLocale = nullptr; |
| |
| // If we have already figured this out just use the cached value |
| if (gCorrectedPOSIXLocale != nullptr) { |
| return gCorrectedPOSIXLocale; |
| } |
| |
| // No cached value, need to determine the current value |
| static WCHAR windowsLocale[LOCALE_NAME_MAX_LENGTH] = {}; |
| int length = GetLocaleInfoEx(LOCALE_NAME_USER_DEFAULT, LOCALE_SNAME, windowsLocale, LOCALE_NAME_MAX_LENGTH); |
| |
| // Now we should have a Windows locale name that needs converted to the POSIX style. |
| if (length > 0) // If length is 0, then the GetLocaleInfoEx failed. |
| { |
| // First we need to go from UTF-16 to char (and also convert from _ to - while we're at it.) |
| char modifiedWindowsLocale[LOCALE_NAME_MAX_LENGTH] = {}; |
| |
| int32_t i; |
| for (i = 0; i < UPRV_LENGTHOF(modifiedWindowsLocale); i++) |
| { |
| if (windowsLocale[i] == '_') |
| { |
| modifiedWindowsLocale[i] = '-'; |
| } |
| else |
| { |
| modifiedWindowsLocale[i] = static_cast<char>(windowsLocale[i]); |
| } |
| |
| if (modifiedWindowsLocale[i] == '\0') |
| { |
| break; |
| } |
| } |
| |
| if (i >= UPRV_LENGTHOF(modifiedWindowsLocale)) |
| { |
| // Ran out of room, can't really happen, maybe we'll be lucky about a matching |
| // locale when tags are dropped |
| modifiedWindowsLocale[UPRV_LENGTHOF(modifiedWindowsLocale) - 1] = '\0'; |
| } |
| |
| // Now normalize the resulting name |
| correctedPOSIXLocale = static_cast<char *>(uprv_malloc(POSIX_LOCALE_CAPACITY + 1)); |
| /* TODO: Should we just exit on memory allocation failure? */ |
| if (correctedPOSIXLocale) |
| { |
| int32_t posixLen = uloc_canonicalize(modifiedWindowsLocale, correctedPOSIXLocale, POSIX_LOCALE_CAPACITY, &status); |
| if (U_SUCCESS(status)) |
| { |
| *(correctedPOSIXLocale + posixLen) = 0; |
| gCorrectedPOSIXLocale = correctedPOSIXLocale; |
| gCorrectedPOSIXLocaleHeapAllocated = true; |
| ucln_common_registerCleanup(UCLN_COMMON_PUTIL, putil_cleanup); |
| } |
| else |
| { |
| uprv_free(correctedPOSIXLocale); |
| } |
| } |
| } |
| |
| // If unable to find a locale we can agree upon, use en-US by default |
| if (gCorrectedPOSIXLocale == nullptr) { |
| gCorrectedPOSIXLocale = "en_US"; |
| } |
| return gCorrectedPOSIXLocale; |
| |
| #elif U_PLATFORM == U_PF_OS400 |
| /* locales are process scoped and are by definition thread safe */ |
| static char correctedLocale[64]; |
| const char *localeID = getenv("LC_ALL"); |
| char *p; |
| |
| if (localeID == NULL) |
| localeID = getenv("LANG"); |
| if (localeID == NULL) |
| localeID = setlocale(LC_ALL, NULL); |
| /* Make sure we have something... */ |
| if (localeID == NULL) |
| return "en_US_POSIX"; |
| |
| /* Extract the locale name from the path. */ |
| if((p = uprv_strrchr(localeID, '/')) != NULL) |
| { |
| /* Increment p to start of locale name. */ |
| p++; |
| localeID = p; |
| } |
| |
| /* Copy to work location. */ |
| uprv_strcpy(correctedLocale, localeID); |
| |
| /* Strip off the '.locale' extension. */ |
| if((p = uprv_strchr(correctedLocale, '.')) != NULL) { |
| *p = 0; |
| } |
| |
| /* Upper case the locale name. */ |
| T_CString_toUpperCase(correctedLocale); |
| |
| /* See if we are using the POSIX locale. Any of the |
| * following are equivalent and use the same QLGPGCMA |
| * (POSIX) locale. |
| * QLGPGCMA2 means UCS2 |
| * QLGPGCMA_4 means UTF-32 |
| * QLGPGCMA_8 means UTF-8 |
| */ |
| if ((uprv_strcmp("C", correctedLocale) == 0) || |
| (uprv_strcmp("POSIX", correctedLocale) == 0) || |
| (uprv_strncmp("QLGPGCMA", correctedLocale, 8) == 0)) |
| { |
| uprv_strcpy(correctedLocale, "en_US_POSIX"); |
| } |
| else |
| { |
| int16_t LocaleLen; |
| |
| /* Lower case the lang portion. */ |
| for(p = correctedLocale; *p != 0 && *p != '_'; p++) |
| { |
| *p = uprv_tolower(*p); |
| } |
| |
| /* Adjust for Euro. After '_E' add 'URO'. */ |
| LocaleLen = uprv_strlen(correctedLocale); |
| if (correctedLocale[LocaleLen - 2] == '_' && |
| correctedLocale[LocaleLen - 1] == 'E') |
| { |
| uprv_strcat(correctedLocale, "URO"); |
| } |
| |
| /* If using Lotus-based locale then convert to |
| * equivalent non Lotus. |
| */ |
| else if (correctedLocale[LocaleLen - 2] == '_' && |
| correctedLocale[LocaleLen - 1] == 'L') |
| { |
| correctedLocale[LocaleLen - 2] = 0; |
| } |
| |
| /* There are separate simplified and traditional |
| * locales called zh_HK_S and zh_HK_T. |
| */ |
| else if (uprv_strncmp(correctedLocale, "zh_HK", 5) == 0) |
| { |
| uprv_strcpy(correctedLocale, "zh_HK"); |
| } |
| |
| /* A special zh_CN_GBK locale... |
| */ |
| else if (uprv_strcmp(correctedLocale, "zh_CN_GBK") == 0) |
| { |
| uprv_strcpy(correctedLocale, "zh_CN"); |
| } |
| |
| } |
| |
| return correctedLocale; |
| #endif |
| |
| } |
| |
| #if !U_CHARSET_IS_UTF8 |
| #if U_POSIX_LOCALE |
| /* |
| Due to various platform differences, one platform may specify a charset, |
| when they really mean a different charset. Remap the names so that they are |
| compatible with ICU. Only conflicting/ambiguous aliases should be resolved |
| here. Before adding anything to this function, please consider adding unique |
| names to the ICU alias table in the data directory. |
| */ |
| static const char* |
| remapPlatformDependentCodepage(const char *locale, const char *name) { |
| if (locale != NULL && *locale == 0) { |
| /* Make sure that an empty locale is handled the same way. */ |
| locale = NULL; |
| } |
| if (name == NULL) { |
| return NULL; |
| } |
| #if U_PLATFORM == U_PF_AIX |
| if (uprv_strcmp(name, "IBM-943") == 0) { |
| /* Use the ASCII compatible ibm-943 */ |
| name = "Shift-JIS"; |
| } |
| else if (uprv_strcmp(name, "IBM-1252") == 0) { |
| /* Use the windows-1252 that contains the Euro */ |
| name = "IBM-5348"; |
| } |
| #elif U_PLATFORM == U_PF_SOLARIS |
| if (locale != NULL && uprv_strcmp(name, "EUC") == 0) { |
| /* Solaris underspecifies the "EUC" name. */ |
| if (uprv_strcmp(locale, "zh_CN") == 0) { |
| name = "EUC-CN"; |
| } |
| else if (uprv_strcmp(locale, "zh_TW") == 0) { |
| name = "EUC-TW"; |
| } |
| else if (uprv_strcmp(locale, "ko_KR") == 0) { |
| name = "EUC-KR"; |
| } |
| } |
| else if (uprv_strcmp(name, "eucJP") == 0) { |
| /* |
| ibm-954 is the best match. |
| ibm-33722 is the default for eucJP (similar to Windows). |
| */ |
| name = "eucjis"; |
| } |
| else if (uprv_strcmp(name, "646") == 0) { |
| /* |
| * The default codepage given by Solaris is 646 but the C library routines treat it as if it was |
| * ISO-8859-1 instead of US-ASCII(646). |
| */ |
| name = "ISO-8859-1"; |
| } |
| #elif U_PLATFORM_IS_DARWIN_BASED |
| if (locale == NULL && *name == 0) { |
| /* |
| No locale was specified, and an empty name was passed in. |
| This usually indicates that nl_langinfo didn't return valid information. |
| Mac OS X uses UTF-8 by default (especially the locale data and console). |
| */ |
| name = "UTF-8"; |
| } |
| else if (uprv_strcmp(name, "CP949") == 0) { |
| /* Remap CP949 to a similar codepage to avoid issues with backslash and won symbol. */ |
| name = "EUC-KR"; |
| } |
| else if (locale != NULL && uprv_strcmp(locale, "en_US_POSIX") != 0 && uprv_strcmp(name, "US-ASCII") == 0) { |
| /* |
| * For non C/POSIX locale, default the code page to UTF-8 instead of US-ASCII. |
| */ |
| name = "UTF-8"; |
| } |
| #elif U_PLATFORM == U_PF_BSD |
| if (uprv_strcmp(name, "CP949") == 0) { |
| /* Remap CP949 to a similar codepage to avoid issues with backslash and won symbol. */ |
| name = "EUC-KR"; |
| } |
| #elif U_PLATFORM == U_PF_HPUX |
| if (locale != NULL && uprv_strcmp(locale, "zh_HK") == 0 && uprv_strcmp(name, "big5") == 0) { |
| /* HP decided to extend big5 as hkbig5 even though it's not compatible :-( */ |
| /* zh_TW.big5 is not the same charset as zh_HK.big5! */ |
| name = "hkbig5"; |
| } |
| else if (uprv_strcmp(name, "eucJP") == 0) { |
| /* |
| ibm-1350 is the best match, but unavailable. |
| ibm-954 is mostly a superset of ibm-1350. |
| ibm-33722 is the default for eucJP (similar to Windows). |
| */ |
| name = "eucjis"; |
| } |
| #elif U_PLATFORM == U_PF_LINUX |
| if (locale != NULL && uprv_strcmp(name, "euc") == 0) { |
| /* Linux underspecifies the "EUC" name. */ |
| if (uprv_strcmp(locale, "korean") == 0) { |
| name = "EUC-KR"; |
| } |
| else if (uprv_strcmp(locale, "japanese") == 0) { |
| /* See comment below about eucJP */ |
| name = "eucjis"; |
| } |
| } |
| else if (uprv_strcmp(name, "eucjp") == 0) { |
| /* |
| ibm-1350 is the best match, but unavailable. |
| ibm-954 is mostly a superset of ibm-1350. |
| ibm-33722 is the default for eucJP (similar to Windows). |
| */ |
| name = "eucjis"; |
| } |
| else if (locale != NULL && uprv_strcmp(locale, "en_US_POSIX") != 0 && |
| (uprv_strcmp(name, "ANSI_X3.4-1968") == 0 || uprv_strcmp(name, "US-ASCII") == 0)) { |
| /* |
| * For non C/POSIX locale, default the code page to UTF-8 instead of US-ASCII. |
| */ |
| name = "UTF-8"; |
| } |
| /* |
| * Linux returns ANSI_X3.4-1968 for C/POSIX, but the call site takes care of |
| * it by falling back to 'US-ASCII' when NULL is returned from this |
| * function. So, we don't have to worry about it here. |
| */ |
| #endif |
| /* return NULL when "" is passed in */ |
| if (*name == 0) { |
| name = NULL; |
| } |
| return name; |
| } |
| |
| static const char* |
| getCodepageFromPOSIXID(const char *localeName, char * buffer, int32_t buffCapacity) |
| { |
| char localeBuf[100]; |
| const char *name = NULL; |
| char *variant = NULL; |
| |
| if (localeName != NULL && (name = (uprv_strchr(localeName, '.'))) != NULL) { |
| size_t localeCapacity = uprv_min(sizeof(localeBuf), (name-localeName)+1); |
| uprv_strncpy(localeBuf, localeName, localeCapacity); |
| localeBuf[localeCapacity-1] = 0; /* ensure NULL termination */ |
| name = uprv_strncpy(buffer, name+1, buffCapacity); |
| buffer[buffCapacity-1] = 0; /* ensure NULL termination */ |
| if ((variant = const_cast<char *>(uprv_strchr(name, '@'))) != NULL) { |
| *variant = 0; |
| } |
| name = remapPlatformDependentCodepage(localeBuf, name); |
| } |
| return name; |
| } |
| #endif |
| |
| static const char* |
| int_getDefaultCodepage() |
| { |
| #if U_PLATFORM == U_PF_OS400 |
| uint32_t ccsid = 37; /* Default to ibm-37 */ |
| static char codepage[64]; |
| Qwc_JOBI0400_t jobinfo; |
| Qus_EC_t error = { sizeof(Qus_EC_t) }; /* SPI error code */ |
| |
| EPT_CALL(QUSRJOBI)(&jobinfo, sizeof(jobinfo), "JOBI0400", |
| "* ", " ", &error); |
| |
| if (error.Bytes_Available == 0) { |
| if (jobinfo.Coded_Char_Set_ID != 0xFFFF) { |
| ccsid = (uint32_t)jobinfo.Coded_Char_Set_ID; |
| } |
| else if (jobinfo.Default_Coded_Char_Set_Id != 0xFFFF) { |
| ccsid = (uint32_t)jobinfo.Default_Coded_Char_Set_Id; |
| } |
| /* else use the default */ |
| } |
| sprintf(codepage,"ibm-%d", ccsid); |
| return codepage; |
| |
| #elif U_PLATFORM == U_PF_OS390 |
| static char codepage[64]; |
| |
| strncpy(codepage, nl_langinfo(CODESET),63-strlen(UCNV_SWAP_LFNL_OPTION_STRING)); |
| strcat(codepage,UCNV_SWAP_LFNL_OPTION_STRING); |
| codepage[63] = 0; /* NULL terminate */ |
| |
| return codepage; |
| |
| #elif U_PLATFORM_USES_ONLY_WIN32_API |
| static char codepage[64]; |
| DWORD codepageNumber = 0; |
| |
| #if U_PLATFORM_HAS_WINUWP_API == 1 |
| // UWP doesn't have a direct API to get the default ACP as Microsoft would rather |
| // have folks use Unicode than a "system" code page, however this is the same |
| // codepage as the system default locale codepage. (FWIW, the system locale is |
| // ONLY used for codepage, it should never be used for anything else) |
| GetLocaleInfoEx(LOCALE_NAME_SYSTEM_DEFAULT, LOCALE_IDEFAULTANSICODEPAGE | LOCALE_RETURN_NUMBER, |
| (LPWSTR)&codepageNumber, sizeof(codepageNumber) / sizeof(WCHAR)); |
| #else |
| // Win32 apps can call GetACP |
| codepageNumber = GetACP(); |
| #endif |
| // Special case for UTF-8 |
| if (codepageNumber == 65001) |
| { |
| return "UTF-8"; |
| } |
| // Windows codepages can look like windows-1252, so format the found number |
| // the numbers are eclectic, however all valid system code pages, besides UTF-8 |
| // are between 3 and 19999 |
| if (codepageNumber > 0 && codepageNumber < 20000) |
| { |
| sprintf(codepage, "windows-%ld", codepageNumber); |
| return codepage; |
| } |
| // If the codepage number call failed then return UTF-8 |
| return "UTF-8"; |
| |
| #elif U_POSIX_LOCALE |
| static char codesetName[100]; |
| const char *localeName = NULL; |
| const char *name = NULL; |
| |
| localeName = uprv_getPOSIXIDForDefaultCodepage(); |
| uprv_memset(codesetName, 0, sizeof(codesetName)); |
| /* On Solaris nl_langinfo returns C locale values unless setlocale |
| * was called earlier. |
| */ |
| #if (U_HAVE_NL_LANGINFO_CODESET && U_PLATFORM != U_PF_SOLARIS) |
| /* When available, check nl_langinfo first because it usually gives more |
| useful names. It depends on LC_CTYPE. |
| nl_langinfo may use the same buffer as setlocale. */ |
| { |
| const char *codeset = nl_langinfo(U_NL_LANGINFO_CODESET); |
| #if U_PLATFORM_IS_DARWIN_BASED || U_PLATFORM_IS_LINUX_BASED |
| /* |
| * On Linux and MacOSX, ensure that default codepage for non C/POSIX locale is UTF-8 |
| * instead of ASCII. |
| */ |
| if (uprv_strcmp(localeName, "en_US_POSIX") != 0) { |
| codeset = remapPlatformDependentCodepage(localeName, codeset); |
| } else |
| #endif |
| { |
| codeset = remapPlatformDependentCodepage(NULL, codeset); |
| } |
| |
| if (codeset != NULL) { |
| uprv_strncpy(codesetName, codeset, sizeof(codesetName)); |
| codesetName[sizeof(codesetName)-1] = 0; |
| return codesetName; |
| } |
| } |
| #endif |
| |
| /* Use setlocale in a nice way, and then check some environment variables. |
| Maybe the application used setlocale already. |
| */ |
| uprv_memset(codesetName, 0, sizeof(codesetName)); |
| name = getCodepageFromPOSIXID(localeName, codesetName, sizeof(codesetName)); |
| if (name) { |
| /* if we can find the codeset name from setlocale, return that. */ |
| return name; |
| } |
| |
| if (*codesetName == 0) |
| { |
| /* Everything failed. Return US ASCII (ISO 646). */ |
| (void)uprv_strcpy(codesetName, "US-ASCII"); |
| } |
| return codesetName; |
| #else |
| return "US-ASCII"; |
| #endif |
| } |
| |
| |
| U_CAPI const char* U_EXPORT2 |
| uprv_getDefaultCodepage() |
| { |
| static char const *name = NULL; |
| umtx_lock(NULL); |
| if (name == NULL) { |
| name = int_getDefaultCodepage(); |
| } |
| umtx_unlock(NULL); |
| return name; |
| } |
| #endif /* !U_CHARSET_IS_UTF8 */ |
| |
| |
| /* end of platform-specific implementation -------------- */ |
| |
| /* version handling --------------------------------------------------------- */ |
| |
| U_CAPI void U_EXPORT2 |
| u_versionFromString(UVersionInfo versionArray, const char *versionString) { |
| char *end; |
| uint16_t part=0; |
| |
| if(versionArray==NULL) { |
| return; |
| } |
| |
| if(versionString!=NULL) { |
| for(;;) { |
| versionArray[part]=(uint8_t)uprv_strtoul(versionString, &end, 10); |
| if(end==versionString || ++part==U_MAX_VERSION_LENGTH || *end!=U_VERSION_DELIMITER) { |
| break; |
| } |
| versionString=end+1; |
| } |
| } |
| |
| while(part<U_MAX_VERSION_LENGTH) { |
| versionArray[part++]=0; |
| } |
| } |
| |
| U_CAPI void U_EXPORT2 |
| u_versionFromUString(UVersionInfo versionArray, const UChar *versionString) { |
| if(versionArray!=NULL && versionString!=NULL) { |
| char versionChars[U_MAX_VERSION_STRING_LENGTH+1]; |
| int32_t len = u_strlen(versionString); |
| if(len>U_MAX_VERSION_STRING_LENGTH) { |
| len = U_MAX_VERSION_STRING_LENGTH; |
| } |
| u_UCharsToChars(versionString, versionChars, len); |
| versionChars[len]=0; |
| u_versionFromString(versionArray, versionChars); |
| } |
| } |
| |
| U_CAPI void U_EXPORT2 |
| u_versionToString(const UVersionInfo versionArray, char *versionString) { |
| uint16_t count, part; |
| uint8_t field; |
| |
| if(versionString==NULL) { |
| return; |
| } |
| |
| if(versionArray==NULL) { |
| versionString[0]=0; |
| return; |
| } |
| |
| /* count how many fields need to be written */ |
| for(count=4; count>0 && versionArray[count-1]==0; --count) { |
| } |
| |
| if(count <= 1) { |
| count = 2; |
| } |
| |
| /* write the first part */ |
| /* write the decimal field value */ |
| field=versionArray[0]; |
| if(field>=100) { |
| *versionString++=(char)('0'+field/100); |
| field%=100; |
| } |
| if(field>=10) { |
| *versionString++=(char)('0'+field/10); |
| field%=10; |
| } |
| *versionString++=(char)('0'+field); |
| |
| /* write the following parts */ |
| for(part=1; part<count; ++part) { |
| /* write a dot first */ |
| *versionString++=U_VERSION_DELIMITER; |
| |
| /* write the decimal field value */ |
| field=versionArray[part]; |
| if(field>=100) { |
| *versionString++=(char)('0'+field/100); |
| field%=100; |
| } |
| if(field>=10) { |
| *versionString++=(char)('0'+field/10); |
| field%=10; |
| } |
| *versionString++=(char)('0'+field); |
| } |
| |
| /* NUL-terminate */ |
| *versionString=0; |
| } |
| |
| U_CAPI void U_EXPORT2 |
| u_getVersion(UVersionInfo versionArray) { |
| (void)copyright; // Suppress unused variable warning from clang. |
| u_versionFromString(versionArray, U_ICU_VERSION); |
| } |
| |
| /** |
| * icucfg.h dependent code |
| */ |
| |
| #if U_ENABLE_DYLOAD && HAVE_DLOPEN && !U_PLATFORM_USES_ONLY_WIN32_API |
| |
| #if HAVE_DLFCN_H |
| #ifdef __MVS__ |
| #ifndef __SUSV3 |
| #define __SUSV3 1 |
| #endif |
| #endif |
| #include <dlfcn.h> |
| #endif /* HAVE_DLFCN_H */ |
| |
| U_CAPI void * U_EXPORT2 |
| uprv_dl_open(const char *libName, UErrorCode *status) { |
| void *ret = NULL; |
| if(U_FAILURE(*status)) return ret; |
| ret = dlopen(libName, RTLD_NOW|RTLD_GLOBAL); |
| if(ret==NULL) { |
| #ifdef U_TRACE_DYLOAD |
| printf("dlerror on dlopen(%s): %s\n", libName, dlerror()); |
| #endif |
| *status = U_MISSING_RESOURCE_ERROR; |
| } |
| return ret; |
| } |
| |
| U_CAPI void U_EXPORT2 |
| uprv_dl_close(void *lib, UErrorCode *status) { |
| if(U_FAILURE(*status)) return; |
| dlclose(lib); |
| } |
| |
| U_CAPI UVoidFunction* U_EXPORT2 |
| uprv_dlsym_func(void *lib, const char* sym, UErrorCode *status) { |
| union { |
| UVoidFunction *fp; |
| void *vp; |
| } uret; |
| uret.fp = NULL; |
| if(U_FAILURE(*status)) return uret.fp; |
| uret.vp = dlsym(lib, sym); |
| if(uret.vp == NULL) { |
| #ifdef U_TRACE_DYLOAD |
| printf("dlerror on dlsym(%p,%s): %s\n", lib,sym, dlerror()); |
| #endif |
| *status = U_MISSING_RESOURCE_ERROR; |
| } |
| return uret.fp; |
| } |
| |
| #elif U_ENABLE_DYLOAD && U_PLATFORM_USES_ONLY_WIN32_API && !U_PLATFORM_HAS_WINUWP_API |
| |
| /* Windows API implementation. */ |
| // Note: UWP does not expose/allow these APIs, so the UWP version gets the null implementation. */ |
| |
| U_CAPI void * U_EXPORT2 |
| uprv_dl_open(const char *libName, UErrorCode *status) { |
| HMODULE lib = NULL; |
| |
| if(U_FAILURE(*status)) return NULL; |
| |
| lib = LoadLibraryA(libName); |
| |
| if(lib==NULL) { |
| *status = U_MISSING_RESOURCE_ERROR; |
| } |
| |
| return (void*)lib; |
| } |
| |
| U_CAPI void U_EXPORT2 |
| uprv_dl_close(void *lib, UErrorCode *status) { |
| HMODULE handle = (HMODULE)lib; |
| if(U_FAILURE(*status)) return; |
| |
| FreeLibrary(handle); |
| |
| return; |
| } |
| |
| U_CAPI UVoidFunction* U_EXPORT2 |
| uprv_dlsym_func(void *lib, const char* sym, UErrorCode *status) { |
| HMODULE handle = (HMODULE)lib; |
| UVoidFunction* addr = NULL; |
| |
| if(U_FAILURE(*status) || lib==NULL) return NULL; |
| |
| addr = (UVoidFunction*)GetProcAddress(handle, sym); |
| |
| if(addr==NULL) { |
| DWORD lastError = GetLastError(); |
| if(lastError == ERROR_PROC_NOT_FOUND) { |
| *status = U_MISSING_RESOURCE_ERROR; |
| } else { |
| *status = U_UNSUPPORTED_ERROR; /* other unknown error. */ |
| } |
| } |
| |
| return addr; |
| } |
| |
| #else |
| |
| /* No dynamic loading, null (nonexistent) implementation. */ |
| |
| U_CAPI void * U_EXPORT2 |
| uprv_dl_open(const char *libName, UErrorCode *status) { |
| (void)libName; |
| if(U_FAILURE(*status)) return NULL; |
| *status = U_UNSUPPORTED_ERROR; |
| return NULL; |
| } |
| |
| U_CAPI void U_EXPORT2 |
| uprv_dl_close(void *lib, UErrorCode *status) { |
| (void)lib; |
| if(U_FAILURE(*status)) return; |
| *status = U_UNSUPPORTED_ERROR; |
| return; |
| } |
| |
| U_CAPI UVoidFunction* U_EXPORT2 |
| uprv_dlsym_func(void *lib, const char* sym, UErrorCode *status) { |
| (void)lib; |
| (void)sym; |
| if(U_SUCCESS(*status)) { |
| *status = U_UNSUPPORTED_ERROR; |
| } |
| return (UVoidFunction*)NULL; |
| } |
| |
| #endif |
| |
| /* |
| * Hey, Emacs, please set the following: |
| * |
| * Local Variables: |
| * indent-tabs-mode: nil |
| * End: |
| * |
| */ |