2492 lines
79 KiB
C++
2492 lines
79 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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******************************************************************************
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*
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* Copyright (C) 1997-2016, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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******************************************************************************
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*
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* FILE NAME : putil.c (previously putil.cpp and ptypes.cpp)
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*
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* Date Name Description
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* 04/14/97 aliu Creation.
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* 04/24/97 aliu Added getDefaultDataDirectory() and
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* getDefaultLocaleID().
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* 04/28/97 aliu Rewritten to assume Unix and apply general methods
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* for assumed case. Non-UNIX platforms must be
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* special-cased. Rewrote numeric methods dealing
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* with NaN and Infinity to be platform independent
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* over all IEEE 754 platforms.
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* 05/13/97 aliu Restored sign of timezone
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* (semantics are hours West of GMT)
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* 06/16/98 erm Added IEEE_754 stuff, cleaned up isInfinite, isNan,
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* nextDouble..
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* 07/22/98 stephen Added remainder, max, min, trunc
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* 08/13/98 stephen Added isNegativeInfinity, isPositiveInfinity
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* 08/24/98 stephen Added longBitsFromDouble
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* 09/08/98 stephen Minor changes for Mac Port
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* 03/02/99 stephen Removed openFile(). Added AS400 support.
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* Fixed EBCDIC tables
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* 04/15/99 stephen Converted to C.
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* 06/28/99 stephen Removed mutex locking in u_isBigEndian().
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* 08/04/99 jeffrey R. Added OS/2 changes
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* 11/15/99 helena Integrated S/390 IEEE support.
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* 04/26/01 Barry N. OS/400 support for uprv_getDefaultLocaleID
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* 08/15/01 Steven H. OS/400 support for uprv_getDefaultCodepage
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* 01/03/08 Steven L. Fake Time Support
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******************************************************************************
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*/
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// Defines _XOPEN_SOURCE for access to POSIX functions.
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// Must be before any other #includes.
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#include "uposixdefs.h"
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// First, the platform type. Need this for U_PLATFORM.
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#include "unicode/platform.h"
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#if U_PLATFORM == U_PF_MINGW && defined __STRICT_ANSI__
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/* tzset isn't defined in strict ANSI on MinGW. */
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#undef __STRICT_ANSI__
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#endif
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/*
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* Cygwin with GCC requires inclusion of time.h after the above disabling strict asci mode statement.
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*/
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#include <time.h>
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#if !U_PLATFORM_USES_ONLY_WIN32_API
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#include <sys/time.h>
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#endif
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/* include the rest of the ICU headers */
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#include "unicode/putil.h"
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#include "unicode/ustring.h"
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#include "putilimp.h"
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#include "uassert.h"
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#include "umutex.h"
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#include "cmemory.h"
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#include "cstring.h"
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#include "locmap.h"
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#include "ucln_cmn.h"
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#include "charstr.h"
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/* Include standard headers. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <locale.h>
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#include <float.h>
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#ifndef U_COMMON_IMPLEMENTATION
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#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
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#endif
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/* include system headers */
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#if U_PLATFORM_USES_ONLY_WIN32_API
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/*
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* TODO: U_PLATFORM_USES_ONLY_WIN32_API includes MinGW.
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* Should Cygwin be included as well (U_PLATFORM_HAS_WIN32_API)
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* to use native APIs as much as possible?
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*/
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#ifndef WIN32_LEAN_AND_MEAN
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# define WIN32_LEAN_AND_MEAN
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#endif
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# define VC_EXTRALEAN
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# define NOUSER
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# define NOSERVICE
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# define NOIME
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# define NOMCX
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# include <windows.h>
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# include "unicode/uloc.h"
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# include "wintz.h"
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#elif U_PLATFORM == U_PF_OS400
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# include <float.h>
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# include <qusec.h> /* error code structure */
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# include <qusrjobi.h>
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# include <qliept.h> /* EPT_CALL macro - this include must be after all other "QSYSINCs" */
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# include <mih/testptr.h> /* For uprv_maximumPtr */
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#elif U_PLATFORM == U_PF_OS390
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# include "unicode/ucnv.h" /* Needed for UCNV_SWAP_LFNL_OPTION_STRING */
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#elif U_PLATFORM_IS_DARWIN_BASED || U_PLATFORM_IS_LINUX_BASED || U_PLATFORM == U_PF_BSD || U_PLATFORM == U_PF_SOLARIS
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# include <limits.h>
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# include <unistd.h>
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# if U_PLATFORM == U_PF_SOLARIS
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# ifndef _XPG4_2
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# define _XPG4_2
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# endif
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# elif U_PLATFORM == U_PF_ANDROID
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# include <sys/system_properties.h>
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# include <dlfcn.h>
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# endif
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#elif U_PLATFORM == U_PF_QNX
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# include <sys/neutrino.h>
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#endif
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/*
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* Only include langinfo.h if we have a way to get the codeset. If we later
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* depend on more feature, we can test on U_HAVE_NL_LANGINFO.
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*
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*/
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#if U_HAVE_NL_LANGINFO_CODESET
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#include <langinfo.h>
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#endif
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/**
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* Simple things (presence of functions, etc) should just go in configure.in and be added to
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* icucfg.h via autoheader.
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*/
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#if U_PLATFORM_IMPLEMENTS_POSIX
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# if U_PLATFORM == U_PF_OS400
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# define HAVE_DLFCN_H 0
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# define HAVE_DLOPEN 0
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# else
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# ifndef HAVE_DLFCN_H
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# define HAVE_DLFCN_H 1
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# endif
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# ifndef HAVE_DLOPEN
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# define HAVE_DLOPEN 1
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# endif
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# endif
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# ifndef HAVE_GETTIMEOFDAY
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# define HAVE_GETTIMEOFDAY 1
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# endif
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#else
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# define HAVE_DLFCN_H 0
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# define HAVE_DLOPEN 0
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# define HAVE_GETTIMEOFDAY 0
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#endif
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U_NAMESPACE_USE
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/* Define the extension for data files, again... */
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#define DATA_TYPE "dat"
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/* Leave this copyright notice here! */
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static const char copyright[] = U_COPYRIGHT_STRING;
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/* floating point implementations ------------------------------------------- */
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/* We return QNAN rather than SNAN*/
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#define SIGN 0x80000000U
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/* Make it easy to define certain types of constants */
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typedef union {
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int64_t i64; /* This must be defined first in order to allow the initialization to work. This is a C89 feature. */
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double d64;
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} BitPatternConversion;
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static const BitPatternConversion gNan = { (int64_t) INT64_C(0x7FF8000000000000) };
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static const BitPatternConversion gInf = { (int64_t) INT64_C(0x7FF0000000000000) };
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/*---------------------------------------------------------------------------
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Platform utilities
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Our general strategy is to assume we're on a POSIX platform. Platforms which
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are non-POSIX must declare themselves so. The default POSIX implementation
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will sometimes work for non-POSIX platforms as well (e.g., the NaN-related
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functions).
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---------------------------------------------------------------------------*/
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#if U_PLATFORM_USES_ONLY_WIN32_API || U_PLATFORM == U_PF_OS400
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# undef U_POSIX_LOCALE
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#else
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# define U_POSIX_LOCALE 1
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#endif
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/*
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WARNING! u_topNBytesOfDouble and u_bottomNBytesOfDouble
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can't be properly optimized by the gcc compiler sometimes (i.e. gcc 3.2).
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*/
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#if !IEEE_754
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static char*
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u_topNBytesOfDouble(double* d, int n)
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{
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#if U_IS_BIG_ENDIAN
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return (char*)d;
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#else
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return (char*)(d + 1) - n;
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#endif
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}
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static char*
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u_bottomNBytesOfDouble(double* d, int n)
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{
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#if U_IS_BIG_ENDIAN
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return (char*)(d + 1) - n;
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#else
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return (char*)d;
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#endif
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}
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#endif /* !IEEE_754 */
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#if IEEE_754
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static UBool
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u_signBit(double d) {
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uint8_t hiByte;
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#if U_IS_BIG_ENDIAN
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hiByte = *(uint8_t *)&d;
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#else
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hiByte = *(((uint8_t *)&d) + sizeof(double) - 1);
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#endif
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return (hiByte & 0x80) != 0;
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}
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#endif
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#if defined (U_DEBUG_FAKETIME)
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/* Override the clock to test things without having to move the system clock.
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* Assumes POSIX gettimeofday() will function
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*/
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UDate fakeClock_t0 = 0; /** Time to start the clock from **/
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UDate fakeClock_dt = 0; /** Offset (fake time - real time) **/
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UBool fakeClock_set = false; /** True if fake clock has spun up **/
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static UDate getUTCtime_real() {
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struct timeval posixTime;
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gettimeofday(&posixTime, NULL);
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return (UDate)(((int64_t)posixTime.tv_sec * U_MILLIS_PER_SECOND) + (posixTime.tv_usec/1000));
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}
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static UDate getUTCtime_fake() {
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static UMutex fakeClockMutex;
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umtx_lock(&fakeClockMutex);
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if(!fakeClock_set) {
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UDate real = getUTCtime_real();
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const char *fake_start = getenv("U_FAKETIME_START");
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if((fake_start!=NULL) && (fake_start[0]!=0)) {
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sscanf(fake_start,"%lf",&fakeClock_t0);
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fakeClock_dt = fakeClock_t0 - real;
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fprintf(stderr,"U_DEBUG_FAKETIME was set at compile time, so the ICU clock will start at a preset value\n"
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"env variable U_FAKETIME_START=%.0f (%s) for an offset of %.0f ms from the current time %.0f\n",
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fakeClock_t0, fake_start, fakeClock_dt, real);
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} else {
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fakeClock_dt = 0;
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fprintf(stderr,"U_DEBUG_FAKETIME was set at compile time, but U_FAKETIME_START was not set.\n"
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"Set U_FAKETIME_START to the number of milliseconds since 1/1/1970 to set the ICU clock.\n");
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}
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fakeClock_set = true;
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}
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umtx_unlock(&fakeClockMutex);
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return getUTCtime_real() + fakeClock_dt;
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}
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#endif
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#if U_PLATFORM_USES_ONLY_WIN32_API
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typedef union {
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int64_t int64;
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FILETIME fileTime;
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} FileTimeConversion; /* This is like a ULARGE_INTEGER */
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/* Number of 100 nanoseconds from 1/1/1601 to 1/1/1970 */
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#define EPOCH_BIAS INT64_C(116444736000000000)
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#define HECTONANOSECOND_PER_MILLISECOND 10000
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#endif
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/*---------------------------------------------------------------------------
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Universal Implementations
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These are designed to work on all platforms. Try these, and if they
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don't work on your platform, then special case your platform with new
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implementations.
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---------------------------------------------------------------------------*/
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U_CAPI UDate U_EXPORT2
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uprv_getUTCtime()
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{
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#if defined(U_DEBUG_FAKETIME)
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return getUTCtime_fake(); /* Hook for overriding the clock */
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#else
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return uprv_getRawUTCtime();
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#endif
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}
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/* Return UTC (GMT) time measured in milliseconds since 0:00 on 1/1/70.*/
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U_CAPI UDate U_EXPORT2
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uprv_getRawUTCtime()
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{
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#if U_PLATFORM_USES_ONLY_WIN32_API
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FileTimeConversion winTime;
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GetSystemTimeAsFileTime(&winTime.fileTime);
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return (UDate)((winTime.int64 - EPOCH_BIAS) / HECTONANOSECOND_PER_MILLISECOND);
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#else
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#if HAVE_GETTIMEOFDAY
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struct timeval posixTime;
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gettimeofday(&posixTime, NULL);
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return (UDate)(((int64_t)posixTime.tv_sec * U_MILLIS_PER_SECOND) + (posixTime.tv_usec/1000));
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#else
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time_t epochtime;
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time(&epochtime);
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return (UDate)epochtime * U_MILLIS_PER_SECOND;
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#endif
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#endif
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}
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/*-----------------------------------------------------------------------------
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IEEE 754
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These methods detect and return NaN and infinity values for doubles
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conforming to IEEE 754. Platforms which support this standard include X86,
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Mac 680x0, Mac PowerPC, AIX RS/6000, and most others.
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If this doesn't work on your platform, you have non-IEEE floating-point, and
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will need to code your own versions. A naive implementation is to return 0.0
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for getNaN and getInfinity, and false for isNaN and isInfinite.
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---------------------------------------------------------------------------*/
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U_CAPI UBool U_EXPORT2
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uprv_isNaN(double number)
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{
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#if IEEE_754
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BitPatternConversion convertedNumber;
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convertedNumber.d64 = number;
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/* Infinity is 0x7FF0000000000000U. Anything greater than that is a NaN */
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return (UBool)((convertedNumber.i64 & U_INT64_MAX) > gInf.i64);
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#elif U_PLATFORM == U_PF_OS390
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uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number,
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sizeof(uint32_t));
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uint32_t lowBits = *(uint32_t*)u_bottomNBytesOfDouble(&number,
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sizeof(uint32_t));
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return ((highBits & 0x7F080000L) == 0x7F080000L) &&
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(lowBits == 0x00000000L);
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#else
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/* If your platform doesn't support IEEE 754 but *does* have an NaN value,*/
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/* you'll need to replace this default implementation with what's correct*/
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/* for your platform.*/
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return number != number;
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#endif
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}
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U_CAPI UBool U_EXPORT2
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uprv_isInfinite(double number)
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{
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#if IEEE_754
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BitPatternConversion convertedNumber;
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convertedNumber.d64 = number;
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/* Infinity is exactly 0x7FF0000000000000U. */
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return (UBool)((convertedNumber.i64 & U_INT64_MAX) == gInf.i64);
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#elif U_PLATFORM == U_PF_OS390
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uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number,
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sizeof(uint32_t));
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uint32_t lowBits = *(uint32_t*)u_bottomNBytesOfDouble(&number,
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sizeof(uint32_t));
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return ((highBits & ~SIGN) == 0x70FF0000L) && (lowBits == 0x00000000L);
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#else
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/* If your platform doesn't support IEEE 754 but *does* have an infinity*/
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/* value, you'll need to replace this default implementation with what's*/
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/* correct for your platform.*/
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return number == (2.0 * number);
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#endif
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}
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U_CAPI UBool U_EXPORT2
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uprv_isPositiveInfinity(double number)
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{
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#if IEEE_754 || U_PLATFORM == U_PF_OS390
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return (UBool)(number > 0 && uprv_isInfinite(number));
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#else
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return uprv_isInfinite(number);
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#endif
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}
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U_CAPI UBool U_EXPORT2
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uprv_isNegativeInfinity(double number)
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{
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#if IEEE_754 || U_PLATFORM == U_PF_OS390
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return (UBool)(number < 0 && uprv_isInfinite(number));
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#else
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uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number,
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sizeof(uint32_t));
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return((highBits & SIGN) && uprv_isInfinite(number));
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#endif
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}
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U_CAPI double U_EXPORT2
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uprv_getNaN()
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{
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|
#if IEEE_754 || U_PLATFORM == U_PF_OS390
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return gNan.d64;
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#else
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|
/* If your platform doesn't support IEEE 754 but *does* have an NaN value,*/
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/* you'll need to replace this default implementation with what's correct*/
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/* for your platform.*/
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return 0.0;
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#endif
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}
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U_CAPI double U_EXPORT2
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uprv_getInfinity()
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|
{
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|
#if IEEE_754 || U_PLATFORM == U_PF_OS390
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return gInf.d64;
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#else
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|
/* If your platform doesn't support IEEE 754 but *does* have an infinity*/
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|
/* value, you'll need to replace this default implementation with what's*/
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|
/* correct for your platform.*/
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return 0.0;
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#endif
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}
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U_CAPI double U_EXPORT2
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uprv_floor(double x)
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|
{
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return floor(x);
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|
}
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U_CAPI double U_EXPORT2
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uprv_ceil(double x)
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|
{
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|
return ceil(x);
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|
}
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U_CAPI double U_EXPORT2
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uprv_round(double x)
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|
{
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return uprv_floor(x + 0.5);
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}
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U_CAPI double U_EXPORT2
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uprv_fabs(double x)
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{
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return fabs(x);
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}
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U_CAPI double U_EXPORT2
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uprv_modf(double x, double* y)
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{
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return modf(x, y);
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}
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U_CAPI double U_EXPORT2
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uprv_fmod(double x, double y)
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{
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return fmod(x, y);
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}
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U_CAPI double U_EXPORT2
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uprv_pow(double x, double y)
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{
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|
/* This is declared as "double pow(double x, double y)" */
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return pow(x, y);
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}
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U_CAPI double U_EXPORT2
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uprv_pow10(int32_t x)
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{
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return pow(10.0, (double)x);
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}
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U_CAPI double U_EXPORT2
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uprv_fmax(double x, double y)
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|
{
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#if IEEE_754
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/* first handle NaN*/
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if(uprv_isNaN(x) || uprv_isNaN(y))
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return uprv_getNaN();
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/* 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:
|
|
*
|
|
*/
|