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scuffed-code/icu4c/source/common/putil.cpp

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/*
******************************************************************************
*
* Copyright (C) 1997-2011, 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"
/* include ICU headers */
#include "unicode/utypes.h"
#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 standard headers. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <locale.h>
#include <float.h>
/* 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?
*/
# define WIN32_LEAN_AND_MEAN
# define VC_EXTRALEAN
# define NOUSER
# define NOSERVICE
# define NOIME
# define NOMCX
# include <windows.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_CLASSIC_MACOS
# include <Files.h>
# include <IntlResources.h>
# include <Script.h>
# include <Folders.h>
# include <MacTypes.h>
# include <TextUtils.h>
# define ICU_NO_USER_DATA_OVERRIDE 1
#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
# include <limits.h>
# include <unistd.h>
#elif U_PLATFORM == U_PF_QNX
# include <sys/neutrino.h>
#elif U_PLATFORM == U_PF_SOLARIS
# ifndef _XPG4_2
# define _XPG4_2
# endif
#endif
#if (U_PF_MINGW <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN) && defined(__STRICT_ANSI__)
/* tzset isn't defined in strict ANSI on Cygwin and 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
/*
* 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 defined(U_HAVE_ICUCFG)
# include "icucfg.h"
#elif U_PLATFORM_IMPLEMENTS_POSIX
# define HAVE_DLFCN_H 1
# define HAVE_DLOPEN 1
# define HAVE_GETTIMEOFDAY 1
#else
# undef HAVE_DLFCN_H
# undef HAVE_DLOPEN
# undef HAVE_GETTIMEOFDAY
#endif
#define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0]))
/* 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_CLASSIC_MACOS || 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 UMTX fakeClockMutex = NULL;
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() {
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 == U_PF_CLASSIC_MACOS
time_t t, t1, t2;
struct tm tmrec;
uprv_memset( &tmrec, 0, sizeof(tmrec) );
tmrec.tm_year = 70;
tmrec.tm_mon = 0;
tmrec.tm_mday = 1;
t1 = mktime(&tmrec); /* seconds of 1/1/1970*/
time(&t);
uprv_memcpy( &tmrec, gmtime(&t), sizeof(tmrec) );
t2 = mktime(&tmrec); /* seconds of current GMT*/
return (UDate)(t2 - t1) * U_MILLIS_PER_SECOND; /* GMT (or UTC) in seconds since 1970*/
#elif U_PLATFORM_USES_ONLY_WIN32_API
FileTimeConversion winTime;
GetSystemTimeAsFileTime(&winTime.fileTime);
return (UDate)((winTime.int64 - EPOCH_BIAS) / HECTONANOSECOND_PER_MILLISECOND);
#else
#if defined(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);
}
/**
* 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;
UBool dst_checked;
int32_t tdiff = 0;
time(&t);
uprv_memcpy( &tmrec, localtime(&t), sizeof(tmrec) );
dst_checked = (tmrec.tm_isdst != 0); /* daylight savings time is checked*/
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;
/* imitate NT behaviour, which returns same timezone offset to GMT for
winter and summer*/
if (dst_checked)
tdiff += 3600;
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 || U_PLATFORM == U_PF_CYGWIN)
/* 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_IS_LINUX_BASED || U_PLATFORM == U_PF_BSD)
/* These platforms are likely to use Olson timezone IDs. */
#define CHECK_LOCALTIME_LINK 1
#if U_PLATFORM_IS_DARWIN_BASED
#include <tzfile.h>
#define TZZONEINFO (TZDIR "/")
#else
#define TZDEFAULT "/etc/localtime"
#define TZZONEINFO "/usr/share/zoneinfo/"
#endif
#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)
static UBool isValidOlsonID(const char *id) {
int32_t idx = 0;
/* Determine if this is something like Iceland (Olson ID)
or AST4ADT (non-Olson ID) */
while (id[idx] && isNonDigit(id[idx]) && id[idx] != ',') {
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; /* 1=daylight in June, 2=daylight in December*/
const char *stdID;
const char *dstID;
const char *olsonID;
} OffsetZoneMapping;
/*
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 < 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_PATH_SIZE PATH_MAX /* Set the limit for the size of the path. */
#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 seperate 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;
}
/*
* This method recursively traverses the directory given for a matching TZ file and returns the first match.
*/
/* dirent also lists two entries: "." and ".." that we can safely ignore. */
#define SKIP1 "."
#define SKIP2 ".."
static char SEARCH_TZFILE_RESULT[MAX_PATH_SIZE] = "";
static char* searchForTZFile(const char* path, DefaultTZInfo* tzInfo) {
char curpath[MAX_PATH_SIZE];
DIR* dirp = opendir(path);
DIR* subDirp = NULL;
struct dirent* dirEntry = NULL;
char* result = NULL;
if (dirp == NULL) {
return result;
}
/* Save the current path */
uprv_memset(curpath, 0, MAX_PATH_SIZE);
uprv_strcpy(curpath, path);
/* 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) {
/* Create a newpath with the new entry to test each entry in the directory. */
char newpath[MAX_PATH_SIZE];
uprv_strcpy(newpath, curpath);
uprv_strcat(newpath, dirName);
if ((subDirp = opendir(newpath)) != NULL) {
/* If this new path is a directory, make a recursive call with the newpath. */
closedir(subDirp);
uprv_strcat(newpath, "/");
result = searchForTZFile(newpath, 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 (uprv_strcmp(TZFILE_SKIP, dirName) != 0 && uprv_strcmp(TZFILE_SKIP2, dirName) != 0) {
if(compareBinaryFiles(TZDEFAULT, newpath, tzInfo)) {
const char* zoneid = newpath + (sizeof(TZZONEINFO)) - 1;
skipZoneIDPrefix(&zoneid);
uprv_strcpy(SEARCH_TZFILE_RESULT, zoneid);
result = SEARCH_TZFILE_RESULT;
/* Get out after the first one found. */
break;
}
}
}
}
closedir(dirp);
return result;
}
#endif
U_CAPI const char* U_EXPORT2
uprv_tzname(int n)
{
const char *tzid = NULL;
#if U_PLATFORM_USES_ONLY_WIN32_API
tzid = uprv_detectWindowsTimeZone();
if (tzid != NULL) {
return tzid;
}
#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
tzid = getenv("TZ");
if (tzid != NULL && isValidOlsonID(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)
/* 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));
if (0 < ret) {
int32_t tzZoneInfoLen = uprv_strlen(TZZONEINFO);
gTimeZoneBuffer[ret] = 0;
if (uprv_strncmp(gTimeZoneBuffer, TZZONEINFO, tzZoneInfoLen) == 0
&& isValidOlsonID(gTimeZoneBuffer + tzZoneInfoLen))
{
return (gTimeZoneBufferPtr = gTimeZoneBuffer + tzZoneInfoLen);
}
} 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);
daylightType = ((decemberSol.tm_isdst > 0) << 1) | (juneSol.tm_isdst > 0);
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 char *gDataDirectory = NULL;
#if U_POSIX_LOCALE
static char *gCorrectedPOSIXLocale = NULL; /* Heap allocated */
#endif
static UBool U_CALLCONV putil_cleanup(void)
{
if (gDataDirectory && *gDataDirectory) {
uprv_free(gDataDirectory);
}
gDataDirectory = NULL;
#if U_POSIX_LOCALE
if (gCorrectedPOSIXLocale) {
uprv_free(gCorrectedPOSIXLocale);
gCorrectedPOSIXLocale = NULL;
}
#endif
return TRUE;
}
/*
* Set the data directory.
* Make a copy of the passed string, and set the global data dir to point to it.
* TODO: see bug #2849, regarding thread safety.
*/
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)) {
*p = U_FILE_SEP_CHAR;
}
}
#endif
}
umtx_lock(NULL);
if (gDataDirectory && *gDataDirectory) {
uprv_free(gDataDirectory);
}
gDataDirectory = newDataDir;
ucln_common_registerCleanup(UCLN_COMMON_PUTIL, putil_cleanup);
umtx_unlock(NULL);
}
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;
}
/* Temporary backup setting of ICU_DATA_DIR_PREFIX_ENV_VAR
until some client wrapper makefiles are updated */
#if U_PLATFORM_IS_DARWIN_BASED && TARGET_IPHONE_SIMULATOR
# if !defined(ICU_DATA_DIR_PREFIX_ENV_VAR)
# define ICU_DATA_DIR_PREFIX_ENV_VAR "IPHONE_SIMULATOR_ROOT"
# endif
#endif
U_CAPI const char * U_EXPORT2
u_getDataDirectory(void) {
const char *path = NULL;
#if defined(ICU_DATA_DIR_PREFIX_ENV_VAR)
char datadir_path_buffer[PATH_MAX];
#endif
/* if we have the directory, then return it immediately */
UMTX_CHECK(NULL, gDataDirectory, path);
if(path) {
return path;
}
/*
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 */
path=getenv("ICU_DATA");
# 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(path==NULL) {
/* It looks really bad, set it to something. */
path = "";
}
u_setDataDirectory(path);
return gDataDirectory;
}
/* Macintosh-specific locale information ------------------------------------ */
#if U_PLATFORM == U_PF_CLASSIC_MACOS
typedef struct {
int32_t script;
int32_t region;
int32_t lang;
int32_t date_region;
const char* posixID;
} mac_lc_rec;
/* Todo: This will be updated with a newer version from www.unicode.org web
page when it's available.*/
#define MAC_LC_MAGIC_NUMBER -5
#define MAC_LC_INIT_NUMBER -9
static const mac_lc_rec mac_lc_recs[] = {
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 0, "en_US",
/* United States*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 1, "fr_FR",
/* France*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 2, "en_GB",
/* Great Britain*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 3, "de_DE",
/* Germany*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 4, "it_IT",
/* Italy*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 5, "nl_NL",
/* Metherlands*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 6, "fr_BE",
/* French for Belgium or Lxembourg*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 7, "sv_SE",
/* Sweden*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 9, "da_DK",
/* Denmark*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 10, "pt_PT",
/* Portugal*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 11, "fr_CA",
/* French Canada*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 13, "is_IS",
/* Israel*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 14, "ja_JP",
/* Japan*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 15, "en_AU",
/* Australia*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 16, "ar_AE",
/* the Arabic world (?)*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 17, "fi_FI",
/* Finland*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 18, "fr_CH",
/* French for Switzerland*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 19, "de_CH",
/* German for Switzerland*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 20, "el_GR",
/* Greece*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 21, "is_IS",
/* Iceland ===*/
/*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 22, "",*/
/* Malta ===*/
/*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 23, "",*/
/* Cyprus ===*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 24, "tr_TR",
/* Turkey ===*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 25, "sh_YU",
/* Croatian system for Yugoslavia*/
/*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 33, "",*/
/* Hindi system for India*/
/*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 34, "",*/
/* Pakistan*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 41, "lt_LT",
/* Lithuania*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 42, "pl_PL",
/* Poland*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 43, "hu_HU",
/* Hungary*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 44, "et_EE",
/* Estonia*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 45, "lv_LV",
/* Latvia*/
/*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 46, "",*/
/* Lapland [Ask Rich for the data. HS]*/
/*MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 47, "",*/
/* Faeroe Islands*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 48, "fa_IR",
/* Iran*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 49, "ru_RU",
/* Russia*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 50, "en_IE",
/* Ireland*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 51, "ko_KR",
/* Korea*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 52, "zh_CN",
/* People's Republic of China*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 53, "zh_TW",
/* Taiwan*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, 54, "th_TH",
/* Thailand*/
/* fallback is en_US*/
MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER, MAC_LC_MAGIC_NUMBER,
MAC_LC_MAGIC_NUMBER, "en_US"
};
#endif
#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");
if (posixID == 0) {
posixID = getenv(category == LC_MESSAGES ? "LC_MESSAGES" : "LC_CTYPE");
if (posixID == 0) {
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";
}
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;
}
/* 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
/* 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.
*/
char *correctedPOSIXLocale = 0;
const char* posixID = uprv_getPOSIXIDForDefaultLocale();
const char *p;
const char *q;
int32_t len;
/* Format: (no spaces)
ll [ _CC ] [ . MM ] [ @ VV]
l = lang, C = ctry, M = charmap, V = variant
*/
if (gCorrectedPOSIXLocale != NULL) {
return gCorrectedPOSIXLocale;
}
if ((p = uprv_strchr(posixID, '.')) != NULL) {
/* assume new locale can't be larger than old one? */
correctedPOSIXLocale = reinterpret_cast<char *>(uprv_malloc(uprv_strlen(posixID)+1));
/* Exit on memory allocation error. */
if (correctedPOSIXLocale == NULL) {
return NULL;
}
uprv_strncpy(correctedPOSIXLocale, posixID, p-posixID);
correctedPOSIXLocale[p-posixID] = 0;
/* do not copy after the @ */
if ((p = uprv_strchr(correctedPOSIXLocale, '@')) != NULL) {
correctedPOSIXLocale[p-correctedPOSIXLocale] = 0;
}
}
/* Note that we scan the *uncorrected* ID. */
if ((p = uprv_strrchr(posixID, '@')) != NULL) {
if (correctedPOSIXLocale == NULL) {
correctedPOSIXLocale = reinterpret_cast<char *>(uprv_malloc(uprv_strlen(posixID)+1));
/* Exit on memory allocation error. */
if (correctedPOSIXLocale == NULL) {
return NULL;
}
uprv_strncpy(correctedPOSIXLocale, posixID, p-posixID);
correctedPOSIXLocale[p-posixID] = 0;
}
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,'_') == NULL) {
uprv_strcat(correctedPOSIXLocale, "__"); /* aa@b -> aa__b */
}
else {
uprv_strcat(correctedPOSIXLocale, "_"); /* aa_CC@b -> aa_CC_b */
}
if ((q = uprv_strchr(p, '.')) != NULL) {
/* How big will the resulting string be? */
len = (int32_t)(uprv_strlen(correctedPOSIXLocale) + (q-p));
uprv_strncat(correctedPOSIXLocale, p, q-p);
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.
*/
}
/* Was a correction made? */
if (correctedPOSIXLocale != NULL) {
posixID = correctedPOSIXLocale;
}
else {
/* copy it, just in case the original pointer goes away. See j2395 */
correctedPOSIXLocale = (char *)uprv_malloc(uprv_strlen(posixID) + 1);
/* Exit on memory allocation error. */
if (correctedPOSIXLocale == NULL) {
return NULL;
}
posixID = uprv_strcpy(correctedPOSIXLocale, posixID);
}
if (gCorrectedPOSIXLocale == NULL) {
gCorrectedPOSIXLocale = correctedPOSIXLocale;
ucln_common_registerCleanup(UCLN_COMMON_PUTIL, putil_cleanup);
correctedPOSIXLocale = NULL;
}
if (correctedPOSIXLocale != NULL) { /* Was already set - clean up. */
uprv_free(correctedPOSIXLocale);
}
return posixID;
#elif U_PLATFORM_USES_ONLY_WIN32_API
UErrorCode status = U_ZERO_ERROR;
LCID id = GetThreadLocale();
const char* locID = uprv_convertToPosix(id, &status);
if (U_FAILURE(status)) {
locID = "en_US";
}
return locID;
#elif U_PLATFORM == U_PF_CLASSIC_MACOS
int32_t script = MAC_LC_INIT_NUMBER;
/* = IntlScript(); or GetScriptManagerVariable(smSysScript);*/
int32_t region = MAC_LC_INIT_NUMBER;
/* = GetScriptManagerVariable(smRegionCode);*/
int32_t lang = MAC_LC_INIT_NUMBER;
/* = GetScriptManagerVariable(smScriptLang);*/
int32_t date_region = MAC_LC_INIT_NUMBER;
const char* posixID = 0;
int32_t count = sizeof(mac_lc_recs) / sizeof(mac_lc_rec);
int32_t i;
Intl1Hndl ih;
ih = (Intl1Hndl) GetIntlResource(1);
if (ih)
date_region = ((uint16_t)(*ih)->intl1Vers) >> 8;
for (i = 0; i < count; i++) {
if ( ((mac_lc_recs[i].script == MAC_LC_MAGIC_NUMBER)
|| (mac_lc_recs[i].script == script))
&& ((mac_lc_recs[i].region == MAC_LC_MAGIC_NUMBER)
|| (mac_lc_recs[i].region == region))
&& ((mac_lc_recs[i].lang == MAC_LC_MAGIC_NUMBER)
|| (mac_lc_recs[i].lang == lang))
&& ((mac_lc_recs[i].date_region == MAC_LC_MAGIC_NUMBER)
|| (mac_lc_recs[i].date_region == date_region))
)
{
posixID = mac_lc_recs[i].posixID;
break;
}
}
return posixID;
#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 == U_PF_CLASSIC_MACOS
return "macintosh"; /* TODO: Macintosh Roman. There must be a better way. fixme! */
#elif U_PLATFORM_USES_ONLY_WIN32_API
static char codepage[64];
sprintf(codepage, "windows-%d", GetACP());
return codepage;
#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));
#if U_HAVE_NL_LANGINFO_CODESET
/* 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(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) {
u_versionFromString(versionArray, U_ICU_VERSION);
}
/**
* icucfg.h dependent code
*/
#if U_ENABLE_DYLOAD
#if defined(U_CHECK_DYLOAD)
#if defined(HAVE_DLOPEN) && !U_PLATFORM_HAS_WIN32_API
#ifdef HAVE_DLFCN_H
#ifdef __MVS__
#ifndef __SUSV3
#define __SUSV3 1
#endif
#endif
#include <dlfcn.h>
#endif
U_INTERNAL 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) {
#ifndef U_TRACE_DYLOAD
perror("dlopen");
#endif
*status = U_MISSING_RESOURCE_ERROR;
}
return ret;
}
U_INTERNAL void U_EXPORT2
uprv_dl_close(void *lib, UErrorCode *status) {
if(U_FAILURE(*status)) return;
dlclose(lib);
}
U_INTERNAL 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) {
*status = U_MISSING_RESOURCE_ERROR;
}
return uret.fp;
}
#else
/* null (nonexistent) implementation. */
U_INTERNAL void * U_EXPORT2
uprv_dl_open(const char *libName, UErrorCode *status) {
if(U_FAILURE(*status)) return NULL;
*status = U_UNSUPPORTED_ERROR;
return NULL;
}
U_INTERNAL void U_EXPORT2
uprv_dl_close(void *lib, UErrorCode *status) {
if(U_FAILURE(*status)) return;
*status = U_UNSUPPORTED_ERROR;
return;
}
U_INTERNAL UVoidFunction* U_EXPORT2
uprv_dlsym_func(void *lib, const char* sym, UErrorCode *status) {
if(U_SUCCESS(*status)) {
*status = U_UNSUPPORTED_ERROR;
}
return (UVoidFunction*)NULL;
}
#endif
#elif U_PLATFORM_HAS_WIN32_API
U_INTERNAL 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_INTERNAL void U_EXPORT2
uprv_dl_close(void *lib, UErrorCode *status) {
HMODULE handle = (HMODULE)lib;
if(U_FAILURE(*status)) return;
FreeLibrary(handle);
return;
}
U_INTERNAL 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 set. */
U_INTERNAL void * U_EXPORT2
uprv_dl_open(const char *libName, UErrorCode *status) {
if(U_FAILURE(*status)) return NULL;
*status = U_UNSUPPORTED_ERROR;
return NULL;
}
U_INTERNAL void U_EXPORT2
uprv_dl_close(void *lib, UErrorCode *status) {
if(U_FAILURE(*status)) return;
*status = U_UNSUPPORTED_ERROR;
return;
}
U_INTERNAL UVoidFunction* U_EXPORT2
uprv_dlsym_func(void *lib, const char* sym, UErrorCode *status) {
if(U_SUCCESS(*status)) {
*status = U_UNSUPPORTED_ERROR;
}
return (UVoidFunction*)NULL;
}
#endif
#endif /* U_ENABLE_DYLOAD */
/*
* Hey, Emacs, please set the following:
*
* Local Variables:
* indent-tabs-mode: nil
* End:
*
*/
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