Bug Summary

File:root/firefox-clang/intl/icu/source/common/putil.cpp
Warning:line 935, column 17
Value of 'errno' was not checked and may be overwritten by function 'memset'

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name putil.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -mframe-pointer=all -relaxed-aliasing -ffp-contract=off -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/root/firefox-clang/obj-x86_64-pc-linux-gnu/config/external/icu/common -fcoverage-compilation-dir=/root/firefox-clang/obj-x86_64-pc-linux-gnu/config/external/icu/common -resource-dir /usr/lib/llvm-21/lib/clang/21 -include /root/firefox-clang/config/gcc_hidden.h -include /root/firefox-clang/obj-x86_64-pc-linux-gnu/mozilla-config.h -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/system_wrappers -U _FORTIFY_SOURCE -D _FORTIFY_SOURCE=2 -D _GLIBCXX_ASSERTIONS -D DEBUG=1 -D U_COMMON_IMPLEMENTATION -D _LIBCPP_DISABLE_DEPRECATION_WARNINGS -D U_USING_ICU_NAMESPACE=0 -D U_NO_DEFAULT_INCLUDE_UTF_HEADERS=1 -D U_HIDE_OBSOLETE_UTF_OLD_H=1 -D UCONFIG_NO_LEGACY_CONVERSION -D UCONFIG_NO_TRANSLITERATION -D UCONFIG_NO_REGULAR_EXPRESSIONS -D UCONFIG_NO_BREAK_ITERATION -D UCONFIG_NO_IDNA -D UCONFIG_NO_MF2 -D U_CHARSET_IS_UTF8 -D UNISTR_FROM_CHAR_EXPLICIT=explicit -D UNISTR_FROM_STRING_EXPLICIT=explicit -D U_ENABLE_DYLOAD=0 -D U_DEBUG=1 -I /root/firefox-clang/config/external/icu/common -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/config/external/icu/common -I /root/firefox-clang/intl/icu/source/i18n -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include/nspr -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include/nss -D MOZILLA_CLIENT -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/x86_64-linux-gnu/c++/14 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14/backward -internal-isystem /usr/lib/llvm-21/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-error=pessimizing-move -Wno-error=large-by-value-copy=128 -Wno-error=implicit-int-float-conversion -Wno-error=thread-safety-analysis -Wno-error=tautological-type-limit-compare -Wno-invalid-offsetof -Wno-range-loop-analysis -Wno-deprecated-anon-enum-enum-conversion -Wno-deprecated-enum-enum-conversion -Wno-deprecated-this-capture -Wno-inline-new-delete -Wno-error=deprecated-declarations -Wno-error=array-bounds -Wno-error=free-nonheap-object -Wno-error=atomic-alignment -Wno-error=deprecated-builtins -Wno-psabi -Wno-error=builtin-macro-redefined -Wno-vla-cxx-extension -Wno-unknown-warning-option -Wno-comma -Wno-implicit-const-int-float-conversion -Wno-macro-redefined -Wno-microsoft-include -Wno-tautological-unsigned-enum-zero-compare -Wno-unreachable-code-loop-increment -Wno-unreachable-code-return -fdeprecated-macro -ferror-limit 19 -fstrict-flex-arrays=1 -stack-protector 2 -fstack-clash-protection -ftrivial-auto-var-init=pattern -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fno-sized-deallocation -fno-aligned-allocation -vectorize-loops -vectorize-slp -analyzer-checker optin.performance.Padding -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2025-06-27-100320-3286336-1 -x c++ /root/firefox-clang/intl/icu/source/common/putil.cpp
1// © 2016 and later: Unicode, Inc. and others.
2// License & terms of use: http://www.unicode.org/copyright.html
3/*
4******************************************************************************
5*
6* Copyright (C) 1997-2016, International Business Machines
7* Corporation and others. All Rights Reserved.
8*
9******************************************************************************
10*
11* FILE NAME : putil.c (previously putil.cpp and ptypes.cpp)
12*
13* Date Name Description
14* 04/14/97 aliu Creation.
15* 04/24/97 aliu Added getDefaultDataDirectory() and
16* getDefaultLocaleID().
17* 04/28/97 aliu Rewritten to assume Unix and apply general methods
18* for assumed case. Non-UNIX platforms must be
19* special-cased. Rewrote numeric methods dealing
20* with NaN and Infinity to be platform independent
21* over all IEEE 754 platforms.
22* 05/13/97 aliu Restored sign of timezone
23* (semantics are hours West of GMT)
24* 06/16/98 erm Added IEEE_754 stuff, cleaned up isInfinite, isNan,
25* nextDouble..
26* 07/22/98 stephen Added remainder, max, min, trunc
27* 08/13/98 stephen Added isNegativeInfinity, isPositiveInfinity
28* 08/24/98 stephen Added longBitsFromDouble
29* 09/08/98 stephen Minor changes for Mac Port
30* 03/02/99 stephen Removed openFile(). Added AS400 support.
31* Fixed EBCDIC tables
32* 04/15/99 stephen Converted to C.
33* 06/28/99 stephen Removed mutex locking in u_isBigEndian().
34* 08/04/99 jeffrey R. Added OS/2 changes
35* 11/15/99 helena Integrated S/390 IEEE support.
36* 04/26/01 Barry N. OS/400 support for uprv_getDefaultLocaleID
37* 08/15/01 Steven H. OS/400 support for uprv_getDefaultCodepage
38* 01/03/08 Steven L. Fake Time Support
39******************************************************************************
40*/
41
42// Defines _XOPEN_SOURCE for access to POSIX functions.
43// Must be before any other #includes.
44#include "uposixdefs.h"
45
46// First, the platform type. Need this for U_PLATFORM.
47#include "unicode/platform.h"
48
49/*
50 * Cygwin with GCC requires inclusion of time.h after the above disabling strict asci mode statement.
51 */
52#include <time.h>
53
54#if !U_PLATFORM_USES_ONLY_WIN32_API0
55#include <sys/time.h>
56#endif
57
58/* include the rest of the ICU headers */
59#include "unicode/putil.h"
60#include "unicode/ustring.h"
61#include "putilimp.h"
62#include "uassert.h"
63#include "umutex.h"
64#include "cmemory.h"
65#include "cstring.h"
66#include "locmap.h"
67#include "ucln_cmn.h"
68#include "charstr.h"
69
70/* Include standard headers. */
71#include <stdio.h>
72#include <stdlib.h>
73#include <string.h>
74#include <math.h>
75#include <locale.h>
76#include <float.h>
77
78#ifndef U_COMMON_IMPLEMENTATION1
79#error U_COMMON_IMPLEMENTATION1 not set - must be set for all ICU source files in common/ - see https://unicode-org.github.io/icu/userguide/icu/howtouseicu.html
80#endif
81
82
83/* include system headers */
84#if U_PLATFORM_USES_ONLY_WIN32_API0
85 /*
86 * TODO: U_PLATFORM_USES_ONLY_WIN32_API includes MinGW.
87 * Should Cygwin be included as well (U_PLATFORM_HAS_WIN32_API)
88 * to use native APIs as much as possible?
89 */
90#ifndef WIN32_LEAN_AND_MEAN
91# define WIN32_LEAN_AND_MEAN
92#endif
93# define VC_EXTRALEAN
94# define NOUSER
95# define NOSERVICE
96# define NOIME
97# define NOMCX
98# include <windows.h>
99# include "unicode/uloc.h"
100# include "wintz.h"
101#elif U_PLATFORM4000 == U_PF_OS4009400
102# include <float.h>
103# include <qusec.h> /* error code structure */
104# include <qusrjobi.h>
105# include <qliept.h> /* EPT_CALL macro - this include must be after all other "QSYSINCs" */
106# include <mih/testptr.h> /* For uprv_maximumPtr */
107#elif U_PLATFORM4000 == U_PF_OS3909000
108# include "unicode/ucnv.h" /* Needed for UCNV_SWAP_LFNL_OPTION_STRING */
109#elif U_PLATFORM_IS_DARWIN_BASED0 || U_PLATFORM_IS_LINUX_BASED1 || U_PLATFORM4000 == U_PF_BSD3000 || U_PLATFORM4000 == U_PF_SOLARIS2600
110# include <limits.h>
111# include <unistd.h>
112# if U_PLATFORM4000 == U_PF_SOLARIS2600
113# ifndef _XPG4_2
114# define _XPG4_2
115# endif
116# elif U_PLATFORM4000 == U_PF_ANDROID4050
117# include <sys/system_properties.h>
118# include <dlfcn.h>
119# endif
120#elif U_PLATFORM4000 == U_PF_QNX3700
121# include <sys/neutrino.h>
122#endif
123
124
125/*
126 * Only include langinfo.h if we have a way to get the codeset. If we later
127 * depend on more feature, we can test on U_HAVE_NL_LANGINFO.
128 *
129 */
130
131#if U_HAVE_NL_LANGINFO_CODESET1
132#include <langinfo.h>
133#endif
134
135/**
136 * Simple things (presence of functions, etc) should just go in configure.in and be added to
137 * icucfg.h via autoheader.
138 */
139#if U_PLATFORM_IMPLEMENTS_POSIX1
140# if U_PLATFORM4000 == U_PF_OS4009400
141# define HAVE_DLFCN_H1 0
142# define HAVE_DLOPEN1 0
143# else
144# ifndef HAVE_DLFCN_H1
145# define HAVE_DLFCN_H1 1
146# endif
147# ifndef HAVE_DLOPEN1
148# define HAVE_DLOPEN1 1
149# endif
150# endif
151# ifndef HAVE_GETTIMEOFDAY1
152# define HAVE_GETTIMEOFDAY1 1
153# endif
154#else
155# define HAVE_DLFCN_H1 0
156# define HAVE_DLOPEN1 0
157# define HAVE_GETTIMEOFDAY1 0
158#endif
159
160U_NAMESPACE_USEusing namespace icu_77;
161
162/* Define the extension for data files, again... */
163#define DATA_TYPE"dat" "dat"
164
165/* Leave this copyright notice here! */
166static const char copyright[] = U_COPYRIGHT_STRING" Copyright (C) 2016 and later: Unicode, Inc. and others. License & terms of use: http://www.unicode.org/copyright.html ";
167
168/* floating point implementations ------------------------------------------- */
169
170/* We return QNAN rather than SNAN*/
171#define SIGN0x80000000U 0x80000000U
172
173/* Make it easy to define certain types of constants */
174typedef union {
175 int64_t i64; /* This must be defined first in order to allow the initialization to work. This is a C89 feature. */
176 double d64;
177} BitPatternConversion;
178static const BitPatternConversion gNan = {static_cast<int64_t>(INT64_C(0x7FF8000000000000)0x7FF8000000000000L)};
179static const BitPatternConversion gInf = {static_cast<int64_t>(INT64_C(0x7FF0000000000000)0x7FF0000000000000L)};
180
181/*---------------------------------------------------------------------------
182 Platform utilities
183 Our general strategy is to assume we're on a POSIX platform. Platforms which
184 are non-POSIX must declare themselves so. The default POSIX implementation
185 will sometimes work for non-POSIX platforms as well (e.g., the NaN-related
186 functions).
187 ---------------------------------------------------------------------------*/
188
189#if U_PLATFORM_USES_ONLY_WIN32_API0 || U_PLATFORM4000 == U_PF_OS4009400
190# undef U_POSIX_LOCALE1
191#else
192# define U_POSIX_LOCALE1 1
193#endif
194
195/*
196 WARNING! u_topNBytesOfDouble and u_bottomNBytesOfDouble
197 can't be properly optimized by the gcc compiler sometimes (i.e. gcc 3.2).
198*/
199#if !IEEE_7541
200static char*
201u_topNBytesOfDouble(double* d, int n)
202{
203#if U_IS_BIG_ENDIAN(1234 == 4321)
204 return (char*)d;
205#else
206 return (char*)(d + 1) - n;
207#endif
208}
209
210static char*
211u_bottomNBytesOfDouble(double* d, int n)
212{
213#if U_IS_BIG_ENDIAN(1234 == 4321)
214 return (char*)(d + 1) - n;
215#else
216 return (char*)d;
217#endif
218}
219#endif /* !IEEE_754 */
220
221#if IEEE_7541
222static UBool
223u_signBit(double d) {
224 uint8_t hiByte;
225#if U_IS_BIG_ENDIAN(1234 == 4321)
226 hiByte = *(uint8_t *)&d;
227#else
228 hiByte = *(reinterpret_cast<uint8_t*>(&d) + sizeof(double) - 1);
229#endif
230 return (hiByte & 0x80) != 0;
231}
232#endif
233
234
235
236#if defined (U_DEBUG_FAKETIME)
237/* Override the clock to test things without having to move the system clock.
238 * Assumes POSIX gettimeofday() will function
239 */
240UDate fakeClock_t0 = 0; /** Time to start the clock from **/
241UDate fakeClock_dt = 0; /** Offset (fake time - real time) **/
242UBool fakeClock_set = false; /** True if fake clock has spun up **/
243
244static UDate getUTCtime_real() {
245 struct timeval posixTime;
246 gettimeofday(&posixTime, nullptr);
247 return (UDate)(((int64_t)posixTime.tv_sec * U_MILLIS_PER_SECOND(1000)) + (posixTime.tv_usec/1000));
248}
249
250static UDate getUTCtime_fake() {
251 static UMutex fakeClockMutex;
252 umtx_lockumtx_lock_77(&fakeClockMutex);
253 if(!fakeClock_set) {
254 UDate real = getUTCtime_real();
255 const char *fake_start = getenv("U_FAKETIME_START");
256 if((fake_start!=nullptr) && (fake_start[0]!=0)) {
257 sscanf(fake_start,"%lf",&fakeClock_t0);
258 fakeClock_dt = fakeClock_t0 - real;
259 fprintf(stderrstderr,"U_DEBUG_FAKETIME was set at compile time, so the ICU clock will start at a preset value\n"
260 "env variable U_FAKETIME_START=%.0f (%s) for an offset of %.0f ms from the current time %.0f\n",
261 fakeClock_t0, fake_start, fakeClock_dt, real);
262 } else {
263 fakeClock_dt = 0;
264 fprintf(stderrstderr,"U_DEBUG_FAKETIME was set at compile time, but U_FAKETIME_START was not set.\n"
265 "Set U_FAKETIME_START to the number of milliseconds since 1/1/1970 to set the ICU clock.\n");
266 }
267 fakeClock_set = true;
268 }
269 umtx_unlockumtx_unlock_77(&fakeClockMutex);
270
271 return getUTCtime_real() + fakeClock_dt;
272}
273#endif
274
275#if U_PLATFORM_USES_ONLY_WIN32_API0
276typedef union {
277 int64_t int64;
278 FILETIME fileTime;
279} FileTimeConversion; /* This is like a ULARGE_INTEGER */
280
281/* Number of 100 nanoseconds from 1/1/1601 to 1/1/1970 */
282#define EPOCH_BIAS INT64_C(116444736000000000)116444736000000000L
283#define HECTONANOSECOND_PER_MILLISECOND 10000
284
285#endif
286
287/*---------------------------------------------------------------------------
288 Universal Implementations
289 These are designed to work on all platforms. Try these, and if they
290 don't work on your platform, then special case your platform with new
291 implementations.
292---------------------------------------------------------------------------*/
293
294U_CAPIextern "C" UDate U_EXPORT2
295uprv_getUTCtimeuprv_getUTCtime_77()
296{
297#if defined(U_DEBUG_FAKETIME)
298 return getUTCtime_fake(); /* Hook for overriding the clock */
299#else
300 return uprv_getRawUTCtimeuprv_getRawUTCtime_77();
301#endif
302}
303
304/* Return UTC (GMT) time measured in milliseconds since 0:00 on 1/1/70.*/
305U_CAPIextern "C" UDate U_EXPORT2
306uprv_getRawUTCtimeuprv_getRawUTCtime_77()
307{
308#if U_PLATFORM_USES_ONLY_WIN32_API0
309
310 FileTimeConversion winTime;
311 GetSystemTimeAsFileTime(&winTime.fileTime);
312 return (UDate)((winTime.int64 - EPOCH_BIAS) / HECTONANOSECOND_PER_MILLISECOND);
313#else
314
315#if HAVE_GETTIMEOFDAY1
316 struct timeval posixTime;
317 gettimeofday(&posixTime, nullptr);
318 return (UDate)(((int64_t)posixTime.tv_sec * U_MILLIS_PER_SECOND(1000)) + (posixTime.tv_usec/1000));
319#else
320 time_t epochtime;
321 time(&epochtime);
322 return (UDate)epochtime * U_MILLIS_PER_SECOND(1000);
323#endif
324
325#endif
326}
327
328/*-----------------------------------------------------------------------------
329 IEEE 754
330 These methods detect and return NaN and infinity values for doubles
331 conforming to IEEE 754. Platforms which support this standard include X86,
332 Mac 680x0, Mac PowerPC, AIX RS/6000, and most others.
333 If this doesn't work on your platform, you have non-IEEE floating-point, and
334 will need to code your own versions. A naive implementation is to return 0.0
335 for getNaN and getInfinity, and false for isNaN and isInfinite.
336 ---------------------------------------------------------------------------*/
337
338U_CAPIextern "C" UBool U_EXPORT2
339uprv_isNaNuprv_isNaN_77(double number)
340{
341#if IEEE_7541
342 BitPatternConversion convertedNumber;
343 convertedNumber.d64 = number;
344 /* Infinity is 0x7FF0000000000000U. Anything greater than that is a NaN */
345 return (convertedNumber.i64 & U_INT64_MAX((int64_t)(9223372036854775807L))) > gInf.i64;
346
347#elif U_PLATFORM4000 == U_PF_OS3909000
348 uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number,
349 sizeof(uint32_t));
350 uint32_t lowBits = *(uint32_t*)u_bottomNBytesOfDouble(&number,
351 sizeof(uint32_t));
352
353 return ((highBits & 0x7F080000L) == 0x7F080000L) &&
354 (lowBits == 0x00000000L);
355
356#else
357 /* If your platform doesn't support IEEE 754 but *does* have an NaN value,*/
358 /* you'll need to replace this default implementation with what's correct*/
359 /* for your platform.*/
360 return number != number;
361#endif
362}
363
364U_CAPIextern "C" UBool U_EXPORT2
365uprv_isInfiniteuprv_isInfinite_77(double number)
366{
367#if IEEE_7541
368 BitPatternConversion convertedNumber;
369 convertedNumber.d64 = number;
370 /* Infinity is exactly 0x7FF0000000000000U. */
371 return (convertedNumber.i64 & U_INT64_MAX((int64_t)(9223372036854775807L))) == gInf.i64;
372#elif U_PLATFORM4000 == U_PF_OS3909000
373 uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number,
374 sizeof(uint32_t));
375 uint32_t lowBits = *(uint32_t*)u_bottomNBytesOfDouble(&number,
376 sizeof(uint32_t));
377
378 return ((highBits & ~SIGN0x80000000U) == 0x70FF0000L) && (lowBits == 0x00000000L);
379
380#else
381 /* If your platform doesn't support IEEE 754 but *does* have an infinity*/
382 /* value, you'll need to replace this default implementation with what's*/
383 /* correct for your platform.*/
384 return number == (2.0 * number);
385#endif
386}
387
388U_CAPIextern "C" UBool U_EXPORT2
389uprv_isPositiveInfinityuprv_isPositiveInfinity_77(double number)
390{
391#if IEEE_7541 || U_PLATFORM4000 == U_PF_OS3909000
392 return number > 0 && uprv_isInfiniteuprv_isInfinite_77(number);
393#else
394 return uprv_isInfiniteuprv_isInfinite_77(number);
395#endif
396}
397
398U_CAPIextern "C" UBool U_EXPORT2
399uprv_isNegativeInfinityuprv_isNegativeInfinity_77(double number)
400{
401#if IEEE_7541 || U_PLATFORM4000 == U_PF_OS3909000
402 return number < 0 && uprv_isInfiniteuprv_isInfinite_77(number);
403
404#else
405 uint32_t highBits = *(uint32_t*)u_topNBytesOfDouble(&number,
406 sizeof(uint32_t));
407 return((highBits & SIGN0x80000000U) && uprv_isInfiniteuprv_isInfinite_77(number));
408
409#endif
410}
411
412U_CAPIextern "C" double U_EXPORT2
413uprv_getNaNuprv_getNaN_77()
414{
415#if IEEE_7541 || U_PLATFORM4000 == U_PF_OS3909000
416 return gNan.d64;
417#else
418 /* If your platform doesn't support IEEE 754 but *does* have an NaN value,*/
419 /* you'll need to replace this default implementation with what's correct*/
420 /* for your platform.*/
421 return 0.0;
422#endif
423}
424
425U_CAPIextern "C" double U_EXPORT2
426uprv_getInfinityuprv_getInfinity_77()
427{
428#if IEEE_7541 || U_PLATFORM4000 == U_PF_OS3909000
429 return gInf.d64;
430#else
431 /* If your platform doesn't support IEEE 754 but *does* have an infinity*/
432 /* value, you'll need to replace this default implementation with what's*/
433 /* correct for your platform.*/
434 return 0.0;
435#endif
436}
437
438U_CAPIextern "C" double U_EXPORT2
439uprv_flooruprv_floor_77(double x)
440{
441 return floor(x);
442}
443
444U_CAPIextern "C" double U_EXPORT2
445uprv_ceiluprv_ceil_77(double x)
446{
447 return ceil(x);
448}
449
450U_CAPIextern "C" double U_EXPORT2
451uprv_rounduprv_round_77(double x)
452{
453 return uprv_flooruprv_floor_77(x + 0.5);
454}
455
456U_CAPIextern "C" double U_EXPORT2
457uprv_fabsuprv_fabs_77(double x)
458{
459 return fabs(x);
460}
461
462U_CAPIextern "C" double U_EXPORT2
463uprv_modfuprv_modf_77(double x, double* y)
464{
465 return modf(x, y);
466}
467
468U_CAPIextern "C" double U_EXPORT2
469uprv_fmoduprv_fmod_77(double x, double y)
470{
471 return fmod(x, y);
472}
473
474U_CAPIextern "C" double U_EXPORT2
475uprv_powuprv_pow_77(double x, double y)
476{
477 /* This is declared as "double pow(double x, double y)" */
478 return pow(x, y);
479}
480
481U_CAPIextern "C" double U_EXPORT2
482uprv_pow10uprv_pow10_77(int32_t x)
483{
484 return pow(10.0, (double)x);
485}
486
487U_CAPIextern "C" double U_EXPORT2
488uprv_fmaxuprv_fmax_77(double x, double y)
489{
490#if IEEE_7541
491 /* first handle NaN*/
492 if(uprv_isNaNuprv_isNaN_77(x) || uprv_isNaNuprv_isNaN_77(y))
493 return uprv_getNaNuprv_getNaN_77();
494
495 /* check for -0 and 0*/
496 if(x == 0.0 && y == 0.0 && u_signBit(x))
497 return y;
498
499#endif
500
501 /* this should work for all flt point w/o NaN and Inf special cases */
502 return (x > y ? x : y);
503}
504
505U_CAPIextern "C" double U_EXPORT2
506uprv_fminuprv_fmin_77(double x, double y)
507{
508#if IEEE_7541
509 /* first handle NaN*/
510 if(uprv_isNaNuprv_isNaN_77(x) || uprv_isNaNuprv_isNaN_77(y))
511 return uprv_getNaNuprv_getNaN_77();
512
513 /* check for -0 and 0*/
514 if(x == 0.0 && y == 0.0 && u_signBit(y))
515 return y;
516
517#endif
518
519 /* this should work for all flt point w/o NaN and Inf special cases */
520 return (x > y ? y : x);
521}
522
523U_CAPIextern "C" UBool U_EXPORT2
524uprv_add32_overflowuprv_add32_overflow_77(int32_t a, int32_t b, int32_t* res) {
525 // NOTE: Some compilers (GCC, Clang) have primitives available, like __builtin_add_overflow.
526 // This function could be optimized by calling one of those primitives.
527 auto a64 = static_cast<int64_t>(a);
528 auto b64 = static_cast<int64_t>(b);
529 int64_t res64 = a64 + b64;
530 *res = static_cast<int32_t>(res64);
531 return res64 != *res;
532}
533
534U_CAPIextern "C" UBool U_EXPORT2
535uprv_mul32_overflowuprv_mul32_overflow_77(int32_t a, int32_t b, int32_t* res) {
536 // NOTE: Some compilers (GCC, Clang) have primitives available, like __builtin_mul_overflow.
537 // This function could be optimized by calling one of those primitives.
538 auto a64 = static_cast<int64_t>(a);
539 auto b64 = static_cast<int64_t>(b);
540 int64_t res64 = a64 * b64;
541 *res = static_cast<int32_t>(res64);
542 return res64 != *res;
543}
544
545/**
546 * Truncates the given double.
547 * trunc(3.3) = 3.0, trunc (-3.3) = -3.0
548 * This is different than calling floor() or ceil():
549 * floor(3.3) = 3, floor(-3.3) = -4
550 * ceil(3.3) = 4, ceil(-3.3) = -3
551 */
552U_CAPIextern "C" double U_EXPORT2
553uprv_truncuprv_trunc_77(double d)
554{
555#if IEEE_7541
556 /* handle error cases*/
557 if(uprv_isNaNuprv_isNaN_77(d))
558 return uprv_getNaNuprv_getNaN_77();
559 if(uprv_isInfiniteuprv_isInfinite_77(d))
560 return uprv_getInfinityuprv_getInfinity_77();
561
562 if(u_signBit(d)) /* Signbit() picks up -0.0; d<0 does not. */
563 return ceil(d);
564 else
565 return floor(d);
566
567#else
568 return d >= 0 ? floor(d) : ceil(d);
569
570#endif
571}
572
573/**
574 * Return the largest positive number that can be represented by an integer
575 * type of arbitrary bit length.
576 */
577U_CAPIextern "C" double U_EXPORT2
578uprv_maxMantissauprv_maxMantissa_77()
579{
580 return pow(2.0, DBL_MANT_DIG53 + 1.0) - 1.0;
581}
582
583U_CAPIextern "C" double U_EXPORT2
584uprv_loguprv_log_77(double d)
585{
586 return log(d);
587}
588
589U_CAPIextern "C" void * U_EXPORT2
590uprv_maximumPtruprv_maximumPtr_77(void * base)
591{
592#if U_PLATFORM4000 == U_PF_OS4009400
593 /*
594 * With the provided function we should never be out of range of a given segment
595 * (a traditional/typical segment that is). Our segments have 5 bytes for the
596 * id and 3 bytes for the offset. The key is that the casting takes care of
597 * only retrieving the offset portion minus x1000. Hence, the smallest offset
598 * seen in a program is x001000 and when casted to an int would be 0.
599 * That's why we can only add 0xffefff. Otherwise, we would exceed the segment.
600 *
601 * Currently, 16MB is the current addressing limitation on i5/OS if the activation is
602 * non-TERASPACE. If it is TERASPACE it is 2GB - 4k(header information).
603 * This function determines the activation based on the pointer that is passed in and
604 * calculates the appropriate maximum available size for
605 * each pointer type (TERASPACE and non-TERASPACE)
606 *
607 * Unlike other operating systems, the pointer model isn't determined at
608 * compile time on i5/OS.
609 */
610 if ((base != nullptr) && (_TESTPTR(base, _C_TERASPACE_CHECK))) {
611 /* if it is a TERASPACE pointer the max is 2GB - 4k */
612 return ((void *)(((char *)base)-((uint32_t)(base))+((uint32_t)0x7fffefff)));
613 }
614 /* otherwise 16MB since nullptr ptr is not checkable or the ptr is not TERASPACE */
615 return ((void *)(((char *)base)-((uint32_t)(base))+((uint32_t)0xffefff)));
616
617#else
618 return U_MAX_PTR(base)((void *)(((uintptr_t)(base)+0x7fffffffu) > (uintptr_t)(base
) ? ((uintptr_t)(base)+0x7fffffffu) : (uintptr_t)-1));
619#endif
620}
621
622/*---------------------------------------------------------------------------
623 Platform-specific Implementations
624 Try these, and if they don't work on your platform, then special case your
625 platform with new implementations.
626 ---------------------------------------------------------------------------*/
627
628/* Generic time zone layer -------------------------------------------------- */
629
630/* Time zone utilities */
631U_CAPIextern "C" void U_EXPORT2
632uprv_tzsetuprv_tzset_77()
633{
634#if defined(U_TZSETtzset)
635 U_TZSETtzset();
636#else
637 /* no initialization*/
638#endif
639}
640
641U_CAPIextern "C" int32_t U_EXPORT2
642uprv_timezoneuprv_timezone_77()
643{
644#ifdef U_TIMEZONE__timezone
645 return U_TIMEZONE__timezone;
646#else
647 time_t t, t1, t2;
648 struct tm tmrec;
649 int32_t tdiff = 0;
650
651 time(&t);
652 uprv_memcpy( &tmrec, localtime(&t), sizeof(tmrec) )do { clang diagnostic push clang diagnostic ignored "-Waddress"
(static_cast <bool> (&tmrec != __null) ? void (0)
: __assert_fail ("&tmrec != __null", __builtin_FILE (), __builtin_LINE
(), __extension__ __PRETTY_FUNCTION__)); (static_cast <bool
> (localtime(&t) != __null) ? void (0) : __assert_fail
("localtime(&t) != __null", __builtin_FILE (), __builtin_LINE
(), __extension__ __PRETTY_FUNCTION__)); clang diagnostic pop
:: memcpy(&tmrec, localtime(&t), sizeof(tmrec)); } while
(false);
653#if U_PLATFORM4000 != U_PF_IPHONE3550
654 UBool dst_checked = (tmrec.tm_isdst != 0); /* daylight savings time is checked*/
655#endif
656 t1 = mktime(&tmrec); /* local time in seconds*/
657 uprv_memcpy( &tmrec, gmtime(&t), sizeof(tmrec) )do { clang diagnostic push clang diagnostic ignored "-Waddress"
(static_cast <bool> (&tmrec != __null) ? void (0)
: __assert_fail ("&tmrec != __null", __builtin_FILE (), __builtin_LINE
(), __extension__ __PRETTY_FUNCTION__)); (static_cast <bool
> (gmtime(&t) != __null) ? void (0) : __assert_fail ("gmtime(&t) != __null"
, __builtin_FILE (), __builtin_LINE (), __extension__ __PRETTY_FUNCTION__
)); clang diagnostic pop :: memcpy(&tmrec, gmtime(&t
), sizeof(tmrec)); } while (false);
658 t2 = mktime(&tmrec); /* GMT (or UTC) in seconds*/
659 tdiff = t2 - t1;
660
661#if U_PLATFORM4000 != U_PF_IPHONE3550
662 /* imitate NT behaviour, which returns same timezone offset to GMT for
663 winter and summer.
664 This does not work on all platforms. For instance, on glibc on Linux
665 and on Mac OS 10.5, tdiff calculated above remains the same
666 regardless of whether DST is in effect or not. iOS is another
667 platform where this does not work. Linux + glibc and Mac OS 10.5
668 have U_TIMEZONE defined so that this code is not reached.
669 */
670 if (dst_checked)
671 tdiff += 3600;
672#endif
673 return tdiff;
674#endif
675}
676
677/* Note that U_TZNAME does *not* have to be tzname, but if it is,
678 some platforms need to have it declared here. */
679
680#if defined(U_TZNAMEtzname) && (U_PLATFORM4000 == U_PF_IRIX3200 || U_PLATFORM_IS_DARWIN_BASED0)
681/* RS6000 and others reject char **tzname. */
682extern U_IMPORT char *U_TZNAMEtzname[];
683#endif
684
685#if !UCONFIG_NO_FILE_IO0 && ((U_PLATFORM_IS_DARWIN_BASED0 && (U_PLATFORM4000 != U_PF_IPHONE3550 || defined(U_TIMEZONE__timezone))) || U_PLATFORM_IS_LINUX_BASED1 || U_PLATFORM4000 == U_PF_BSD3000 || U_PLATFORM4000 == U_PF_SOLARIS2600)
686/* These platforms are likely to use Olson timezone IDs. */
687/* common targets of the symbolic link at TZDEFAULT are:
688 * "/usr/share/zoneinfo/<olsonID>" default, older Linux distros, macOS to 10.12
689 * "../usr/share/zoneinfo/<olsonID>" newer Linux distros: Red Hat Enterprise Linux 7, Ubuntu 16, SuSe Linux 12
690 * "/usr/share/lib/zoneinfo/<olsonID>" Solaris
691 * "../usr/share/lib/zoneinfo/<olsonID>" Solaris
692 * "/var/db/timezone/zoneinfo/<olsonID>" macOS 10.13
693 * To avoid checking lots of paths, just check that the target path
694 * before the <olsonID> ends with "/zoneinfo/", and the <olsonID> is valid.
695 */
696
697#define CHECK_LOCALTIME_LINK1 1
698#if U_PLATFORM_IS_DARWIN_BASED0
699#include <tzfile.h>
700#define TZZONEINFO"/usr/share/zoneinfo/" (TZDIR "/")
701#elif U_PLATFORM4000 == U_PF_SOLARIS2600
702#define TZDEFAULT"/etc/localtime" "/etc/localtime"
703#define TZZONEINFO"/usr/share/zoneinfo/" "/usr/share/lib/zoneinfo/"
704#define TZ_ENV_CHECK "localtime"
705#else
706#define TZDEFAULT"/etc/localtime" "/etc/localtime"
707#define TZZONEINFO"/usr/share/zoneinfo/" "/usr/share/zoneinfo/"
708#endif
709#define TZZONEINFOTAIL"/zoneinfo/" "/zoneinfo/"
710#if U_HAVE_DIRENT_H1
711#define TZFILE_SKIP"posixrules" "posixrules" /* tz file to skip when searching. */
712/* Some Linux distributions have 'localtime' in /usr/share/zoneinfo
713 symlinked to /etc/localtime, which makes searchForTZFile return
714 'localtime' when it's the first match. */
715#define TZFILE_SKIP2"localtime" "localtime"
716#define SEARCH_TZFILE
717#include <dirent.h> /* Needed to search through system timezone files */
718#endif
719static char gTimeZoneBuffer[PATH_MAX4096];
720static const char *gTimeZoneBufferPtr = nullptr;
721#endif
722
723#if !U_PLATFORM_USES_ONLY_WIN32_API0
724#define isNonDigit(ch)(ch < '0' || '9' < ch) (ch < '0' || '9' < ch)
725#define isDigit(ch)('0' <= ch && ch <= '9') ('0' <= ch && ch <= '9')
726static UBool isValidOlsonID(const char *id) {
727 int32_t idx = 0;
728 int32_t idxMax = 0;
729
730 /* Determine if this is something like Iceland (Olson ID)
731 or AST4ADT (non-Olson ID) */
732 while (id[idx] && isNonDigit(id[idx])(id[idx] < '0' || '9' < id[idx]) && id[idx] != ',') {
733 idx++;
734 }
735
736 /* Allow at maximum 2 numbers at the end of the id to support zone id's
737 like GMT+11. */
738 idxMax = idx + 2;
739 while (id[idx] && isDigit(id[idx])('0' <= id[idx] && id[idx] <= '9') && idx < idxMax) {
740 idx++;
741 }
742
743 /* If we went through the whole string, then it might be okay.
744 The timezone is sometimes set to "CST-7CDT", "CST6CDT5,J129,J131/19:30",
745 "GRNLNDST3GRNLNDDT" or similar, so we cannot use it.
746 The rest of the time it could be an Olson ID. George */
747 return id[idx] == 0
748 || uprv_strcmp(id, "PST8PDT"):: strcmp(id, "PST8PDT") == 0
749 || uprv_strcmp(id, "MST7MDT"):: strcmp(id, "MST7MDT") == 0
750 || uprv_strcmp(id, "CST6CDT"):: strcmp(id, "CST6CDT") == 0
751 || uprv_strcmp(id, "EST5EDT"):: strcmp(id, "EST5EDT") == 0;
752}
753
754/* On some Unix-like OS, 'posix' subdirectory in
755 /usr/share/zoneinfo replicates the top-level contents. 'right'
756 subdirectory has the same set of files, but individual files
757 are different from those in the top-level directory or 'posix'
758 because 'right' has files for TAI (Int'l Atomic Time) while 'posix'
759 has files for UTC.
760 When the first match for /etc/localtime is in either of them
761 (usually in posix because 'right' has different file contents),
762 or TZ environment variable points to one of them, createTimeZone
763 fails because, say, 'posix/America/New_York' is not an Olson
764 timezone id ('America/New_York' is). So, we have to skip
765 'posix/' and 'right/' at the beginning. */
766static void skipZoneIDPrefix(const char** id) {
767 if (uprv_strncmp(*id, "posix/", 6):: strncmp(*id, "posix/", 6) == 0
768 || uprv_strncmp(*id, "right/", 6):: strncmp(*id, "right/", 6) == 0)
769 {
770 *id += 6;
771 }
772}
773#endif
774
775#if defined(U_TZNAMEtzname) && !U_PLATFORM_USES_ONLY_WIN32_API0
776
777#define CONVERT_HOURS_TO_SECONDS(offset)(int32_t)(offset*3600) (int32_t)(offset*3600)
778typedef struct OffsetZoneMapping {
779 int32_t offsetSeconds;
780 int32_t daylightType; /* 0=U_DAYLIGHT_NONE, 1=daylight in June-U_DAYLIGHT_JUNE, 2=daylight in December=U_DAYLIGHT_DECEMBER*/
781 const char *stdID;
782 const char *dstID;
783 const char *olsonID;
784} OffsetZoneMapping;
785
786enum { U_DAYLIGHT_NONE=0,U_DAYLIGHT_JUNE=1,U_DAYLIGHT_DECEMBER=2 };
787
788/*
789This list tries to disambiguate a set of abbreviated timezone IDs and offsets
790and maps it to an Olson ID.
791Before adding anything to this list, take a look at
792icu/source/tools/tzcode/tz.alias
793Sometimes no daylight savings (0) is important to define due to aliases.
794This list can be tested with icu/source/test/compat/tzone.pl
795More values could be added to daylightType to increase precision.
796*/
797static const struct OffsetZoneMapping OFFSET_ZONE_MAPPINGS[] = {
798 {-45900, 2, "CHAST", "CHADT", "Pacific/Chatham"},
799 {-43200, 1, "PETT", "PETST", "Asia/Kamchatka"},
800 {-43200, 2, "NZST", "NZDT", "Pacific/Auckland"},
801 {-43200, 1, "ANAT", "ANAST", "Asia/Anadyr"},
802 {-39600, 1, "MAGT", "MAGST", "Asia/Magadan"},
803 {-37800, 2, "LHST", "LHST", "Australia/Lord_Howe"},
804 {-36000, 2, "EST", "EST", "Australia/Sydney"},
805 {-36000, 1, "SAKT", "SAKST", "Asia/Sakhalin"},
806 {-36000, 1, "VLAT", "VLAST", "Asia/Vladivostok"},
807 {-34200, 2, "CST", "CST", "Australia/South"},
808 {-32400, 1, "YAKT", "YAKST", "Asia/Yakutsk"},
809 {-32400, 1, "CHOT", "CHOST", "Asia/Choibalsan"},
810 {-31500, 2, "CWST", "CWST", "Australia/Eucla"},
811 {-28800, 1, "IRKT", "IRKST", "Asia/Irkutsk"},
812 {-28800, 1, "ULAT", "ULAST", "Asia/Ulaanbaatar"},
813 {-28800, 2, "WST", "WST", "Australia/West"},
814 {-25200, 1, "HOVT", "HOVST", "Asia/Hovd"},
815 {-25200, 1, "KRAT", "KRAST", "Asia/Krasnoyarsk"},
816 {-21600, 1, "NOVT", "NOVST", "Asia/Novosibirsk"},
817 {-21600, 1, "OMST", "OMSST", "Asia/Omsk"},
818 {-18000, 1, "YEKT", "YEKST", "Asia/Yekaterinburg"},
819 {-14400, 1, "SAMT", "SAMST", "Europe/Samara"},
820 {-14400, 1, "AMT", "AMST", "Asia/Yerevan"},
821 {-14400, 1, "AZT", "AZST", "Asia/Baku"},
822 {-10800, 1, "AST", "ADT", "Asia/Baghdad"},
823 {-10800, 1, "MSK", "MSD", "Europe/Moscow"},
824 {-10800, 1, "VOLT", "VOLST", "Europe/Volgograd"},
825 {-7200, 0, "EET", "CEST", "Africa/Tripoli"},
826 {-7200, 1, "EET", "EEST", "Europe/Athens"}, /* Conflicts with Africa/Cairo */
827 {-7200, 1, "IST", "IDT", "Asia/Jerusalem"},
828 {-3600, 0, "CET", "WEST", "Africa/Algiers"},
829 {-3600, 2, "WAT", "WAST", "Africa/Windhoek"},
830 {0, 1, "GMT", "IST", "Europe/Dublin"},
831 {0, 1, "GMT", "BST", "Europe/London"},
832 {0, 0, "WET", "WEST", "Africa/Casablanca"},
833 {0, 0, "WET", "WET", "Africa/El_Aaiun"},
834 {3600, 1, "AZOT", "AZOST", "Atlantic/Azores"},
835 {3600, 1, "EGT", "EGST", "America/Scoresbysund"},
836 {10800, 1, "PMST", "PMDT", "America/Miquelon"},
837 {10800, 2, "UYT", "UYST", "America/Montevideo"},
838 {10800, 1, "WGT", "WGST", "America/Godthab"},
839 {10800, 2, "BRT", "BRST", "Brazil/East"},
840 {12600, 1, "NST", "NDT", "America/St_Johns"},
841 {14400, 1, "AST", "ADT", "Canada/Atlantic"},
842 {14400, 2, "AMT", "AMST", "America/Cuiaba"},
843 {14400, 2, "CLT", "CLST", "Chile/Continental"},
844 {14400, 2, "FKT", "FKST", "Atlantic/Stanley"},
845 {14400, 2, "PYT", "PYST", "America/Asuncion"},
846 {18000, 1, "CST", "CDT", "America/Havana"},
847 {18000, 1, "EST", "EDT", "US/Eastern"}, /* Conflicts with America/Grand_Turk */
848 {21600, 2, "EAST", "EASST", "Chile/EasterIsland"},
849 {21600, 0, "CST", "MDT", "Canada/Saskatchewan"},
850 {21600, 0, "CST", "CDT", "America/Guatemala"},
851 {21600, 1, "CST", "CDT", "US/Central"}, /* Conflicts with Mexico/General */
852 {25200, 1, "MST", "MDT", "US/Mountain"}, /* Conflicts with Mexico/BajaSur */
853 {28800, 0, "PST", "PST", "Pacific/Pitcairn"},
854 {28800, 1, "PST", "PDT", "US/Pacific"}, /* Conflicts with Mexico/BajaNorte */
855 {32400, 1, "AKST", "AKDT", "US/Alaska"},
856 {36000, 1, "HAST", "HADT", "US/Aleutian"}
857};
858
859/*#define DEBUG_TZNAME*/
860
861static const char* remapShortTimeZone(const char *stdID, const char *dstID, int32_t daylightType, int32_t offset)
862{
863 int32_t idx;
864#ifdef DEBUG_TZNAME
865 fprintf(stderrstderr, "TZ=%s std=%s dst=%s daylight=%d offset=%d\n", getenv("TZ"), stdID, dstID, daylightType, offset);
866#endif
867 for (idx = 0; idx < UPRV_LENGTHOF(OFFSET_ZONE_MAPPINGS)(int32_t)(sizeof(OFFSET_ZONE_MAPPINGS)/sizeof((OFFSET_ZONE_MAPPINGS
)[0])); idx++)
868 {
869 if (offset == OFFSET_ZONE_MAPPINGS[idx].offsetSeconds
870 && daylightType == OFFSET_ZONE_MAPPINGS[idx].daylightType
871 && strcmp(OFFSET_ZONE_MAPPINGS[idx].stdID, stdID) == 0
872 && strcmp(OFFSET_ZONE_MAPPINGS[idx].dstID, dstID) == 0)
873 {
874 return OFFSET_ZONE_MAPPINGS[idx].olsonID;
875 }
876 }
877 return nullptr;
878}
879#endif
880
881#ifdef SEARCH_TZFILE
882#define MAX_READ_SIZE512 512
883
884typedef struct DefaultTZInfo {
885 char* defaultTZBuffer;
886 int64_t defaultTZFileSize;
887 FILE* defaultTZFilePtr;
888 UBool defaultTZstatus;
889 int32_t defaultTZPosition;
890} DefaultTZInfo;
891
892/*
893 * This method compares the two files given to see if they are a match.
894 * It is currently use to compare two TZ files.
895 */
896static UBool compareBinaryFiles(const char* defaultTZFileName, const char* TZFileName, DefaultTZInfo* tzInfo) {
897 FILE* file;
898 int64_t sizeFile;
899 int64_t sizeFileLeft;
900 int32_t sizeFileRead;
901 int32_t sizeFileToRead;
902 char bufferFile[MAX_READ_SIZE512];
903 UBool result = true;
904
905 if (tzInfo->defaultTZFilePtr == nullptr) {
21
←
Taking true branch
→
906 tzInfo->defaultTZFilePtr = fopen(defaultTZFileName, "r");
907 }
908 file = fopen(TZFileName, "r");
909
910 tzInfo->defaultTZPosition = 0; /* reset position to begin search */
911
912 if (file != nullptr && tzInfo->defaultTZFilePtr != nullptr) {
22
←
Taking true branch
→
913 /* First check that the file size are equal. */
914 if (tzInfo->defaultTZFileSize
22.1
Field 'defaultTZFileSize' is equal to 0
 == 0) {
23
←
Taking true branch
→
915 fseek(tzInfo->defaultTZFilePtr, 0, SEEK_END2);
916 tzInfo->defaultTZFileSize = ftell(tzInfo->defaultTZFilePtr);
917 }
918 fseek(file, 0, SEEK_END2);
919 sizeFile = ftell(file);
920 sizeFileLeft = sizeFile;
921
922 if (sizeFile != tzInfo->defaultTZFileSize) {
24
←
Assuming 'sizeFile' is equal to field 'defaultTZFileSize'
→
25
←
Taking false branch
→
923 result = false;
924 } else {
925 /* Store the data from the files in separate buffers and
926 * compare each byte to determine equality.
927 */
928 if (tzInfo->defaultTZBuffer == nullptr) {
26
←
Taking true branch
→
929 rewind(tzInfo->defaultTZFilePtr);
930 tzInfo->defaultTZBuffer = static_cast<char*>(uprv_mallocuprv_malloc_77(sizeof(char) * tzInfo->defaultTZFileSize));
931 sizeFileRead = fread(tzInfo->defaultTZBuffer, 1, tzInfo->defaultTZFileSize, tzInfo->defaultTZFilePtr);
932 }
933 rewind(file);
27
←
After calling 'rewind' reading 'errno' is required to find out if the call has failed
→
934 while(sizeFileLeft > 0) {
28
←
Assuming 'sizeFileLeft' is > 0
→
29
←
Loop condition is true. Entering loop body
→
935 uprv_memset(bufferFile, 0, MAX_READ_SIZE):: memset(bufferFile, 0, 512);
30
←
Value of 'errno' was not checked and may be overwritten by function 'memset'
936 sizeFileToRead = sizeFileLeft < MAX_READ_SIZE512 ? sizeFileLeft : MAX_READ_SIZE512;
937
938 sizeFileRead = fread(bufferFile, 1, sizeFileToRead, file);
939 if (memcmp(tzInfo->defaultTZBuffer + tzInfo->defaultTZPosition, bufferFile, sizeFileRead) != 0) {
940 result = false;
941 break;
942 }
943 sizeFileLeft -= sizeFileRead;
944 tzInfo->defaultTZPosition += sizeFileRead;
945 }
946 }
947 } else {
948 result = false;
949 }
950
951 if (file != nullptr) {
952 fclose(file);
953 }
954
955 return result;
956}
957
958
959/* dirent also lists two entries: "." and ".." that we can safely ignore. */
960#define SKIP1"." "."
961#define SKIP2".." ".."
962static UBool U_CALLCONV putil_cleanup();
963static CharString *gSearchTZFileResult = nullptr;
964
965/*
966 * This method recursively traverses the directory given for a matching TZ file and returns the first match.
967 * This function is not thread safe - it uses a global, gSearchTZFileResult, to hold its results.
968 */
969static char* searchForTZFile(const char* path, DefaultTZInfo* tzInfo) {
970 DIR* dirp = nullptr;
971 struct dirent* dirEntry = nullptr;
972 char* result = nullptr;
973 UErrorCode status = U_ZERO_ERROR;
974
975 /* Save the current path */
976 CharString curpath(path, -1, status);
977 if (U_FAILURE(status)) {
7
←
Taking false branch
→
978 goto cleanupAndReturn;
979 }
980
981 dirp = opendir(path);
982 if (dirp == nullptr) {
8
←
Taking false branch
→
983 goto cleanupAndReturn;
984 }
985
986 if (gSearchTZFileResult == nullptr) {
9
←
Assuming the condition is false
→
10
←
Taking false branch
→
987 gSearchTZFileResult = new CharString;
988 if (gSearchTZFileResult == nullptr) {
989 goto cleanupAndReturn;
990 }
991 ucln_common_registerCleanupucln_common_registerCleanup_77(UCLN_COMMON_PUTIL, putil_cleanup);
992 }
993
994 /* Check each entry in the directory. */
995 while((dirEntry = readdir(dirp)) != nullptr) {
11
←
Assuming the condition is true
→
12
←
Loop condition is true. Entering loop body
→
996 const char* dirName = dirEntry->d_name;
997 if (uprv_strcmp(dirName, SKIP1):: strcmp(dirName, ".") != 0 && uprv_strcmp(dirName, SKIP2):: strcmp(dirName, "..") != 0
13
←
Assuming the condition is true
→
14
←
Assuming the condition is true
→
17
←
Taking true branch
→
998 && uprv_strcmp(TZFILE_SKIP, dirName):: strcmp("posixrules", dirName) != 0 && uprv_strcmp(TZFILE_SKIP2, dirName):: strcmp("localtime", dirName) != 0) {
15
←
Assuming the condition is true
→
16
←
Assuming the condition is true
→
999 /* Create a newpath with the new entry to test each entry in the directory. */
1000 CharString newpath(curpath, status);
1001 newpath.append(dirName, -1, status);
1002 if (U_FAILURE(status)) {
18
←
Taking false branch
→
1003 break;
1004 }
1005
1006 DIR* subDirp = nullptr;
1007 if ((subDirp = opendir(newpath.data())) != nullptr) {
19
←
Taking false branch
→
1008 /* If this new path is a directory, make a recursive call with the newpath. */
1009 closedir(subDirp);
1010 newpath.append('/', status);
1011 if (U_FAILURE(status)) {
1012 break;
1013 }
1014 result = searchForTZFile(newpath.data(), tzInfo);
1015 /*
1016 Have to get out here. Otherwise, we'd keep looking
1017 and return the first match in the top-level directory
1018 if there's a match in the top-level. If not, this function
1019 would return nullptr and set gTimeZoneBufferPtr to nullptr in initDefault().
1020 It worked without this in most cases because we have a fallback of calling
1021 localtime_r to figure out the default timezone.
1022 */
1023 if (result != nullptr)
1024 break;
1025 } else {
1026 if(compareBinaryFiles(TZDEFAULT"/etc/localtime", newpath.data(), tzInfo)) {
20
←
Calling 'compareBinaryFiles'
→
1027 int32_t amountToSkip = sizeof(TZZONEINFO"/usr/share/zoneinfo/") - 1;
1028 if (amountToSkip > newpath.length()) {
1029 amountToSkip = newpath.length();
1030 }
1031 const char* zoneid = newpath.data() + amountToSkip;
1032 skipZoneIDPrefix(&zoneid);
1033 gSearchTZFileResult->clear();
1034 gSearchTZFileResult->append(zoneid, -1, status);
1035 if (U_FAILURE(status)) {
1036 break;
1037 }
1038 result = gSearchTZFileResult->data();
1039 /* Get out after the first one found. */
1040 break;
1041 }
1042 }
1043 }
1044 }
1045
1046 cleanupAndReturn:
1047 if (dirp) {
1048 closedir(dirp);
1049 }
1050 return result;
1051}
1052#endif
1053
1054#if U_PLATFORM4000 == U_PF_ANDROID4050
1055typedef int(system_property_read_callback)(const prop_info* info,
1056 void (*callback)(void* cookie,
1057 const char* name,
1058 const char* value,
1059 uint32_t serial),
1060 void* cookie);
1061typedef int(system_property_get)(const char*, char*);
1062
1063static char gAndroidTimeZone[PROP_VALUE_MAX] = { '\0' };
1064
1065static void u_property_read(void* cookie, const char* name, const char* value,
1066 uint32_t serial) {
1067 uprv_strcpy((char* )cookie, value):: strcpy((char* )cookie, value);
1068}
1069#endif
1070
1071U_CAPIextern "C" void U_EXPORT2
1072uprv_tzname_clear_cacheuprv_tzname_clear_cache_77()
1073{
1074#if U_PLATFORM4000 == U_PF_ANDROID4050
1075 /* Android's timezone is stored in system property. */
1076 gAndroidTimeZone[0] = '\0';
1077 void* libc = dlopen("libc.so", RTLD_NOLOAD);
1078 if (libc) {
1079 /* Android API 26+ has new API to get system property and old API
1080 * (__system_property_get) is deprecated */
1081 system_property_read_callback* property_read_callback =
1082 (system_property_read_callback*)dlsym(
1083 libc, "__system_property_read_callback");
1084 if (property_read_callback) {
1085 const prop_info* info =
1086 __system_property_find("persist.sys.timezone");
1087 if (info) {
1088 property_read_callback(info, &u_property_read, gAndroidTimeZone);
1089 }
1090 } else {
1091 system_property_get* property_get =
1092 (system_property_get*)dlsym(libc, "__system_property_get");
1093 if (property_get) {
1094 property_get("persist.sys.timezone", gAndroidTimeZone);
1095 }
1096 }
1097 dlclose(libc);
1098 }
1099#endif
1100
1101#if defined(CHECK_LOCALTIME_LINK1) && !defined(DEBUG_SKIP_LOCALTIME_LINK)
1102 gTimeZoneBufferPtr = nullptr;
1103#endif
1104}
1105
1106U_CAPIextern "C" const char* U_EXPORT2
1107uprv_tznameuprv_tzname_77(int n)
1108{
1109 (void)n; // Avoid unreferenced parameter warning.
1110 const char *tzid = nullptr;
1111#if U_PLATFORM_USES_ONLY_WIN32_API0
1112 tzid = uprv_detectWindowsTimeZone();
1113
1114 if (tzid != nullptr) {
1115 return tzid;
1116 }
1117
1118#ifndef U_TZNAMEtzname
1119 // The return value is free'd in timezone.cpp on Windows because
1120 // the other code path returns a pointer to a heap location.
1121 // If we don't have a name already, then tzname wouldn't be any
1122 // better, so just fall back.
1123 return uprv_strdupuprv_strdup_77("");
1124#endif // !U_TZNAME
1125
1126#else
1127
1128/*#if U_PLATFORM_IS_DARWIN_BASED
1129 int ret;
1130
1131 tzid = getenv("TZFILE");
1132 if (tzid != nullptr) {
1133 return tzid;
1134 }
1135#endif*/
1136
1137/* This code can be temporarily disabled to test tzname resolution later on. */
1138#ifndef DEBUG_TZNAME
1139#if U_PLATFORM4000 == U_PF_ANDROID4050
1140 tzid = gAndroidTimeZone;
1141#else
1142 tzid = getenv("TZ");
1143#endif
1144 if (tzid != nullptr && isValidOlsonID(tzid)
1145#if U_PLATFORM4000 == U_PF_SOLARIS2600
1146 /* Don't misinterpret TZ "localtime" on Solaris as a time zone name. */
1147 && uprv_strcmp(tzid, TZ_ENV_CHECK):: strcmp(tzid, TZ_ENV_CHECK) != 0
1148#endif
1149 ) {
1150 /* The colon forces tzset() to treat the remainder as zoneinfo path */
1151 if (tzid[0] == ':') {
1152 tzid++;
1153 }
1154 /* This might be a good Olson ID. */
1155 skipZoneIDPrefix(&tzid);
1156 return tzid;
1157 }
1158 /* else U_TZNAME will give a better result. */
1159#endif
1160
1161#if defined(CHECK_LOCALTIME_LINK1) && !defined(DEBUG_SKIP_LOCALTIME_LINK)
1162 /* Caller must handle threading issues */
1163 if (gTimeZoneBufferPtr == nullptr) {
1
Assuming the condition is true
→
2
←
Taking true branch
→
1164 /*
1165 This is a trick to look at the name of the link to get the Olson ID
1166 because the tzfile contents is underspecified.
1167 This isn't guaranteed to work because it may not be a symlink.
1168 */
1169 char *ret = realpath(TZDEFAULT"/etc/localtime", gTimeZoneBuffer);
1170 if (ret != nullptr && uprv_strcmp(TZDEFAULT, gTimeZoneBuffer):: strcmp("/etc/localtime", gTimeZoneBuffer) != 0) {
3
←
Assuming the condition is false
→
1171 int32_t tzZoneInfoTailLen = uprv_strlen(TZZONEINFOTAIL):: strlen("/zoneinfo/");
1172 const char *tzZoneInfoTailPtr = uprv_strstr(gTimeZoneBuffer, TZZONEINFOTAIL):: strstr(gTimeZoneBuffer, "/zoneinfo/");
1173 // MacOS14 has the realpath as something like
1174 // /usr/share/zoneinfo.default/Australia/Melbourne
1175 // which will not have "/zoneinfo/" in the path.
1176 // Therefore if we fail, we fall back to read the link which is
1177 // /var/db/timezone/zoneinfo/Australia/Melbourne
1178 // We also fall back to reading the link if the realpath leads to something like
1179 // /usr/share/zoneinfo/posixrules
1180 if (tzZoneInfoTailPtr == nullptr ||
1181 uprv_strcmp(tzZoneInfoTailPtr + tzZoneInfoTailLen, "posixrules"):: strcmp(tzZoneInfoTailPtr + tzZoneInfoTailLen, "posixrules"
) == 0) {
1182 ssize_t size = readlink(TZDEFAULT"/etc/localtime", gTimeZoneBuffer, sizeof(gTimeZoneBuffer)-1);
1183 if (size > 0) {
1184 gTimeZoneBuffer[size] = 0;
1185 tzZoneInfoTailPtr = uprv_strstr(gTimeZoneBuffer, TZZONEINFOTAIL):: strstr(gTimeZoneBuffer, "/zoneinfo/");
1186 }
1187 }
1188 if (tzZoneInfoTailPtr != nullptr) {
1189 tzZoneInfoTailPtr += tzZoneInfoTailLen;
1190 skipZoneIDPrefix(&tzZoneInfoTailPtr);
1191 if (isValidOlsonID(tzZoneInfoTailPtr)) {
1192 return (gTimeZoneBufferPtr = tzZoneInfoTailPtr);
1193 }
1194 }
1195 } else {
1196#if defined(SEARCH_TZFILE)
1197 DefaultTZInfo* tzInfo = (DefaultTZInfo*)uprv_mallocuprv_malloc_77(sizeof(DefaultTZInfo));
1198 if (tzInfo != nullptr) {
4
←
Assuming the condition is true
→
5
←
Taking true branch
→
1199 tzInfo->defaultTZBuffer = nullptr;
1200 tzInfo->defaultTZFileSize = 0;
1201 tzInfo->defaultTZFilePtr = nullptr;
1202 tzInfo->defaultTZstatus = false;
1203 tzInfo->defaultTZPosition = 0;
1204
1205 gTimeZoneBufferPtr = searchForTZFile(TZZONEINFO"/usr/share/zoneinfo/", tzInfo);
6
←
Calling 'searchForTZFile'
→
1206
1207 /* Free previously allocated memory */
1208 if (tzInfo->defaultTZBuffer != nullptr) {
1209 uprv_freeuprv_free_77(tzInfo->defaultTZBuffer);
1210 }
1211 if (tzInfo->defaultTZFilePtr != nullptr) {
1212 fclose(tzInfo->defaultTZFilePtr);
1213 }
1214 uprv_freeuprv_free_77(tzInfo);
1215 }
1216
1217 if (gTimeZoneBufferPtr != nullptr && isValidOlsonID(gTimeZoneBufferPtr)) {
1218 return gTimeZoneBufferPtr;
1219 }
1220#endif
1221 }
1222 }
1223 else {
1224 return gTimeZoneBufferPtr;
1225 }
1226#endif
1227#endif
1228
1229#ifdef U_TZNAMEtzname
1230#if U_PLATFORM_USES_ONLY_WIN32_API0
1231 /* The return value is free'd in timezone.cpp on Windows because
1232 * the other code path returns a pointer to a heap location. */
1233 return uprv_strdupuprv_strdup_77(U_TZNAMEtzname[n]);
1234#else
1235 /*
1236 U_TZNAME is usually a non-unique abbreviation, which isn't normally usable.
1237 So we remap the abbreviation to an olson ID.
1238
1239 Since Windows exposes a little more timezone information,
1240 we normally don't use this code on Windows because
1241 uprv_detectWindowsTimeZone should have already given the correct answer.
1242 */
1243 {
1244 struct tm juneSol, decemberSol;
1245 int daylightType;
1246 static const time_t juneSolstice=1182478260; /*2007-06-21 18:11 UT*/
1247 static const time_t decemberSolstice=1198332540; /*2007-12-22 06:09 UT*/
1248
1249 /* This probing will tell us when daylight savings occurs. */
1250 localtime_r(&juneSolstice, &juneSol);
1251 localtime_r(&decemberSolstice, &decemberSol);
1252 if(decemberSol.tm_isdst > 0) {
1253 daylightType = U_DAYLIGHT_DECEMBER;
1254 } else if(juneSol.tm_isdst > 0) {
1255 daylightType = U_DAYLIGHT_JUNE;
1256 } else {
1257 daylightType = U_DAYLIGHT_NONE;
1258 }
1259 tzid = remapShortTimeZone(U_TZNAMEtzname[0], U_TZNAMEtzname[1], daylightType, uprv_timezoneuprv_timezone_77());
1260 if (tzid != nullptr) {
1261 return tzid;
1262 }
1263 }
1264 return U_TZNAMEtzname[n];
1265#endif
1266#else
1267 return "";
1268#endif
1269}
1270
1271/* Get and set the ICU data directory --------------------------------------- */
1272
1273static icu::UInitOnce gDataDirInitOnce {};
1274static char *gDataDirectory = nullptr;
1275
1276UInitOnce gTimeZoneFilesInitOncegTimeZoneFilesInitOnce_77 {};
1277static CharString *gTimeZoneFilesDirectory = nullptr;
1278
1279#if U_POSIX_LOCALE1 || U_PLATFORM_USES_ONLY_WIN32_API0
1280 static const char *gCorrectedPOSIXLocale = nullptr; /* Sometimes heap allocated */
1281 static bool gCorrectedPOSIXLocaleHeapAllocated = false;
1282#endif
1283
1284static UBool U_CALLCONV putil_cleanup()
1285{
1286 if (gDataDirectory && *gDataDirectory) {
1287 uprv_freeuprv_free_77(gDataDirectory);
1288 }
1289 gDataDirectory = nullptr;
1290 gDataDirInitOnce.reset();
1291
1292 delete gTimeZoneFilesDirectory;
1293 gTimeZoneFilesDirectory = nullptr;
1294 gTimeZoneFilesInitOncegTimeZoneFilesInitOnce_77.reset();
1295
1296#ifdef SEARCH_TZFILE
1297 delete gSearchTZFileResult;
1298 gSearchTZFileResult = nullptr;
1299#endif
1300
1301#if U_POSIX_LOCALE1 || U_PLATFORM_USES_ONLY_WIN32_API0
1302 if (gCorrectedPOSIXLocale && gCorrectedPOSIXLocaleHeapAllocated) {
1303 uprv_freeuprv_free_77(const_cast<char *>(gCorrectedPOSIXLocale));
1304 gCorrectedPOSIXLocale = nullptr;
1305 gCorrectedPOSIXLocaleHeapAllocated = false;
1306 }
1307#endif
1308 return true;
1309}
1310
1311/*
1312 * Set the data directory.
1313 * Make a copy of the passed string, and set the global data dir to point to it.
1314 */
1315U_CAPIextern "C" void U_EXPORT2
1316u_setDataDirectoryu_setDataDirectory_77(const char *directory) {
1317 char *newDataDir;
1318 int32_t length;
1319
1320 if(directory==nullptr || *directory==0) {
1321 /* A small optimization to prevent the malloc and copy when the
1322 shared library is used, and this is a way to make sure that nullptr
1323 is never returned.
1324 */
1325 newDataDir = (char *)"";
1326 }
1327 else {
1328 length=(int32_t)uprv_strlen(directory):: strlen(directory);
1329 newDataDir = (char *)uprv_mallocuprv_malloc_77(length + 2);
1330 /* Exit out if newDataDir could not be created. */
1331 if (newDataDir == nullptr) {
1332 return;
1333 }
1334 uprv_strcpy(newDataDir, directory):: strcpy(newDataDir, directory);
1335
1336#if (U_FILE_SEP_CHAR'/' != U_FILE_ALT_SEP_CHAR'/')
1337 {
1338 char *p;
1339 while((p = uprv_strchr(newDataDir, U_FILE_ALT_SEP_CHAR):: strchr(newDataDir, '/')) != nullptr) {
1340 *p = U_FILE_SEP_CHAR'/';
1341 }
1342 }
1343#endif
1344 }
1345
1346 if (gDataDirectory && *gDataDirectory) {
1347 uprv_freeuprv_free_77(gDataDirectory);
1348 }
1349 gDataDirectory = newDataDir;
1350 ucln_common_registerCleanupucln_common_registerCleanup_77(UCLN_COMMON_PUTIL, putil_cleanup);
1351}
1352
1353U_CAPIextern "C" UBool U_EXPORT2
1354uprv_pathIsAbsoluteuprv_pathIsAbsolute_77(const char *path)
1355{
1356 if(!path || !*path) {
1357 return false;
1358 }
1359
1360 if(*path == U_FILE_SEP_CHAR'/') {
1361 return true;
1362 }
1363
1364#if (U_FILE_SEP_CHAR'/' != U_FILE_ALT_SEP_CHAR'/')
1365 if(*path == U_FILE_ALT_SEP_CHAR'/') {
1366 return true;
1367 }
1368#endif
1369
1370#if U_PLATFORM_USES_ONLY_WIN32_API0
1371 if( (((path[0] >= 'A') && (path[0] <= 'Z')) ||
1372 ((path[0] >= 'a') && (path[0] <= 'z'))) &&
1373 path[1] == ':' ) {
1374 return true;
1375 }
1376#endif
1377
1378 return false;
1379}
1380
1381/* Backup setting of ICU_DATA_DIR_PREFIX_ENV_VAR
1382 (needed for some Darwin ICU build environments) */
1383#if U_PLATFORM_IS_DARWIN_BASED0 && defined(TARGET_OS_SIMULATOR) && TARGET_OS_SIMULATOR
1384# if !defined(ICU_DATA_DIR_PREFIX_ENV_VAR)
1385# define ICU_DATA_DIR_PREFIX_ENV_VAR "IPHONE_SIMULATOR_ROOT"
1386# endif
1387#endif
1388
1389#if defined(ICU_DATA_DIR_WINDOWS)
1390// Helper function to get the ICU Data Directory under the Windows directory location.
1391static BOOL U_CALLCONV getIcuDataDirectoryUnderWindowsDirectory(char* directoryBuffer, UINT bufferLength)
1392{
1393 wchar_t windowsPath[MAX_PATH];
1394 char windowsPathUtf8[MAX_PATH];
1395
1396 UINT length = GetSystemWindowsDirectoryW(windowsPath, UPRV_LENGTHOF(windowsPath)(int32_t)(sizeof(windowsPath)/sizeof((windowsPath)[0])));
1397 if ((length > 0) && (length < (UPRV_LENGTHOF(windowsPath)(int32_t)(sizeof(windowsPath)/sizeof((windowsPath)[0])) - 1))) {
1398 // Convert UTF-16 to a UTF-8 string.
1399 UErrorCode status = U_ZERO_ERROR;
1400 int32_t windowsPathUtf8Len = 0;
1401 u_strToUTF8u_strToUTF8_77(windowsPathUtf8, static_cast<int32_t>(UPRV_LENGTHOF(windowsPathUtf8)(int32_t)(sizeof(windowsPathUtf8)/sizeof((windowsPathUtf8)[0]
))),
1402 &windowsPathUtf8Len, reinterpret_cast<const char16_t*>(windowsPath), -1, &status);
1403
1404 if (U_SUCCESS(status) && (status != U_STRING_NOT_TERMINATED_WARNING) &&
1405 (windowsPathUtf8Len < (UPRV_LENGTHOF(windowsPathUtf8)(int32_t)(sizeof(windowsPathUtf8)/sizeof((windowsPathUtf8)[0]
)) - 1))) {
1406 // Ensure it always has a separator, so we can append the ICU data path.
1407 if (windowsPathUtf8[windowsPathUtf8Len - 1] != U_FILE_SEP_CHAR'/') {
1408 windowsPathUtf8[windowsPathUtf8Len++] = U_FILE_SEP_CHAR'/';
1409 windowsPathUtf8[windowsPathUtf8Len] = '\0';
1410 }
1411 // Check if the concatenated string will fit.
1412 if ((windowsPathUtf8Len + UPRV_LENGTHOF(ICU_DATA_DIR_WINDOWS)(int32_t)(sizeof(ICU_DATA_DIR_WINDOWS)/sizeof((ICU_DATA_DIR_WINDOWS
)[0]))) < bufferLength) {
1413 uprv_strcpy(directoryBuffer, windowsPathUtf8):: strcpy(directoryBuffer, windowsPathUtf8);
1414 uprv_strcat(directoryBuffer, ICU_DATA_DIR_WINDOWS):: strcat(directoryBuffer, ICU_DATA_DIR_WINDOWS);
1415 return true;
1416 }
1417 }
1418 }
1419
1420 return false;
1421}
1422#endif
1423
1424static void U_CALLCONV dataDirectoryInitFn() {
1425 /* If we already have the directory, then return immediately. Will happen if user called
1426 * u_setDataDirectory().
1427 */
1428 if (gDataDirectory) {
1429 return;
1430 }
1431
1432 const char *path = nullptr;
1433#if defined(ICU_DATA_DIR_PREFIX_ENV_VAR)
1434 char datadir_path_buffer[PATH_MAX4096];
1435#endif
1436
1437 /*
1438 When ICU_NO_USER_DATA_OVERRIDE is defined, users aren't allowed to
1439 override ICU's data with the ICU_DATA environment variable. This prevents
1440 problems where multiple custom copies of ICU's specific version of data
1441 are installed on a system. Either the application must define the data
1442 directory with u_setDataDirectory, define ICU_DATA_DIR when compiling
1443 ICU, set the data with udata_setCommonData or trust that all of the
1444 required data is contained in ICU's data library that contains
1445 the entry point defined by U_ICUDATA_ENTRY_POINT.
1446
1447 There may also be some platforms where environment variables
1448 are not allowed.
1449 */
1450# if !defined(ICU_NO_USER_DATA_OVERRIDE) && !UCONFIG_NO_FILE_IO0
1451 /* First try to get the environment variable */
1452# if U_PLATFORM_HAS_WINUWP_API0 == 0 // Windows UWP does not support getenv
1453 path=getenv("ICU_DATA");
1454# endif
1455# endif
1456
1457 /* ICU_DATA_DIR may be set as a compile option.
1458 * U_ICU_DATA_DEFAULT_DIR is provided and is set by ICU at compile time
1459 * and is used only when data is built in archive mode eliminating the need
1460 * for ICU_DATA_DIR to be set. U_ICU_DATA_DEFAULT_DIR is set to the installation
1461 * directory of the data dat file. Users should use ICU_DATA_DIR if they want to
1462 * set their own path.
1463 */
1464#if defined(ICU_DATA_DIR) || defined(U_ICU_DATA_DEFAULT_DIR)
1465 if(path==nullptr || *path==0) {
1466# if defined(ICU_DATA_DIR_PREFIX_ENV_VAR)
1467 const char *prefix = getenv(ICU_DATA_DIR_PREFIX_ENV_VAR);
1468# endif
1469# ifdef ICU_DATA_DIR
1470 path=ICU_DATA_DIR;
1471# else
1472 path=U_ICU_DATA_DEFAULT_DIR;
1473# endif
1474# if defined(ICU_DATA_DIR_PREFIX_ENV_VAR)
1475 if (prefix != nullptr) {
1476 snprintf(datadir_path_buffer, sizeof(datadir_path_buffer), "%s%s", prefix, path);
1477 path=datadir_path_buffer;
1478 }
1479# endif
1480 }
1481#endif
1482
1483#if defined(ICU_DATA_DIR_WINDOWS)
1484 char datadir_path_buffer[MAX_PATH];
1485 if (getIcuDataDirectoryUnderWindowsDirectory(datadir_path_buffer, UPRV_LENGTHOF(datadir_path_buffer)(int32_t)(sizeof(datadir_path_buffer)/sizeof((datadir_path_buffer
)[0])))) {
1486 path = datadir_path_buffer;
1487 }
1488#endif
1489
1490 if(path==nullptr) {
1491 /* It looks really bad, set it to something. */
1492 path = "";
1493 }
1494
1495 u_setDataDirectoryu_setDataDirectory_77(path);
1496}
1497
1498U_CAPIextern "C" const char * U_EXPORT2
1499u_getDataDirectoryu_getDataDirectory_77() {
1500 umtx_initOnce(gDataDirInitOnce, &dataDirectoryInitFn);
1501 return gDataDirectory;
1502}
1503
1504static void setTimeZoneFilesDir(const char *path, UErrorCode &status) {
1505 if (U_FAILURE(status)) {
1506 return;
1507 }
1508 gTimeZoneFilesDirectory->clear();
1509 gTimeZoneFilesDirectory->append(path, status);
1510#if (U_FILE_SEP_CHAR'/' != U_FILE_ALT_SEP_CHAR'/')
1511 char *p = gTimeZoneFilesDirectory->data();
1512 while ((p = uprv_strchr(p, U_FILE_ALT_SEP_CHAR):: strchr(p, '/')) != nullptr) {
1513 *p = U_FILE_SEP_CHAR'/';
1514 }
1515#endif
1516}
1517
1518#define TO_STRING(x)"x" TO_STRING_2(x)"x"
1519#define TO_STRING_2(x)"x" #x
1520
1521static void U_CALLCONV TimeZoneDataDirInitFn(UErrorCode &status) {
1522 U_ASSERT(gTimeZoneFilesDirectory == nullptr)(static_cast <bool> (gTimeZoneFilesDirectory == nullptr
) ? void (0) : __assert_fail ("gTimeZoneFilesDirectory == nullptr"
, __builtin_FILE (), __builtin_LINE (), __extension__ __PRETTY_FUNCTION__
));
1523 ucln_common_registerCleanupucln_common_registerCleanup_77(UCLN_COMMON_PUTIL, putil_cleanup);
1524 gTimeZoneFilesDirectory = new CharString();
1525 if (gTimeZoneFilesDirectory == nullptr) {
1526 status = U_MEMORY_ALLOCATION_ERROR;
1527 return;
1528 }
1529
1530 const char *dir = "";
1531
1532#if defined(ICU_TIMEZONE_FILES_DIR_PREFIX_ENV_VAR)
1533 char timezonefilesdir_path_buffer[PATH_MAX4096];
1534 const char *prefix = getenv(ICU_TIMEZONE_FILES_DIR_PREFIX_ENV_VAR);
1535#endif
1536
1537#if U_PLATFORM_HAS_WINUWP_API0 == 1
1538// The UWP version does not support the environment variable setting.
1539
1540# if defined(ICU_DATA_DIR_WINDOWS)
1541 // When using the Windows system data, we can possibly pick up time zone data from the Windows directory.
1542 char datadir_path_buffer[MAX_PATH];
1543 if (getIcuDataDirectoryUnderWindowsDirectory(datadir_path_buffer, UPRV_LENGTHOF(datadir_path_buffer)(int32_t)(sizeof(datadir_path_buffer)/sizeof((datadir_path_buffer
)[0])))) {
1544 dir = datadir_path_buffer;
1545 }
1546# endif
1547
1548#else
1549 dir = getenv("ICU_TIMEZONE_FILES_DIR");
1550#endif // U_PLATFORM_HAS_WINUWP_API
1551
1552#if defined(U_TIMEZONE_FILES_DIR)
1553 if (dir == nullptr) {
1554 // Build time configuration setting.
1555 dir = TO_STRING(U_TIMEZONE_FILES_DIR)"U_TIMEZONE_FILES_DIR";
1556 }
1557#endif
1558
1559 if (dir == nullptr) {
1560 dir = "";
1561 }
1562
1563#if defined(ICU_TIMEZONE_FILES_DIR_PREFIX_ENV_VAR)
1564 if (prefix != nullptr) {
1565 snprintf(timezonefilesdir_path_buffer, sizeof(timezonefilesdir_path_buffer), "%s%s", prefix, dir);
1566 dir = timezonefilesdir_path_buffer;
1567 }
1568#endif
1569
1570 setTimeZoneFilesDir(dir, status);
1571}
1572
1573
1574U_CAPIextern "C" const char * U_EXPORT2
1575u_getTimeZoneFilesDirectoryu_getTimeZoneFilesDirectory_77(UErrorCode *status) {
1576 umtx_initOnce(gTimeZoneFilesInitOncegTimeZoneFilesInitOnce_77, &TimeZoneDataDirInitFn, *status);
1577 return U_SUCCESS(*status) ? gTimeZoneFilesDirectory->data() : "";
1578}
1579
1580U_CAPIextern "C" void U_EXPORT2
1581u_setTimeZoneFilesDirectoryu_setTimeZoneFilesDirectory_77(const char *path, UErrorCode *status) {
1582 umtx_initOnce(gTimeZoneFilesInitOncegTimeZoneFilesInitOnce_77, &TimeZoneDataDirInitFn, *status);
1583 setTimeZoneFilesDir(path, *status);
1584
1585 // Note: this function does some extra churn, first setting based on the
1586 // environment, then immediately replacing with the value passed in.
1587 // The logic is simpler that way, and performance shouldn't be an issue.
1588}
1589
1590
1591#if U_POSIX_LOCALE1
1592/* A helper function used by uprv_getPOSIXIDForDefaultLocale and
1593 * uprv_getPOSIXIDForDefaultCodepage. Returns the posix locale id for
1594 * LC_CTYPE and LC_MESSAGES. It doesn't support other locale categories.
1595 */
1596static const char *uprv_getPOSIXIDForCategory(int category)
1597{
1598 const char* posixID = nullptr;
1599 if (category == LC_MESSAGES5 || category == LC_CTYPE0) {
1600 /*
1601 * On Solaris two different calls to setlocale can result in
1602 * different values. Only get this value once.
1603 *
1604 * We must check this first because an application can set this.
1605 *
1606 * LC_ALL can't be used because it's platform dependent. The LANG
1607 * environment variable seems to affect LC_CTYPE variable by default.
1608 * Here is what setlocale(LC_ALL, nullptr) can return.
1609 * HPUX can return 'C C C C C C C'
1610 * Solaris can return /en_US/C/C/C/C/C on the second try.
1611 * Linux can return LC_CTYPE=C;LC_NUMERIC=C;...
1612 *
1613 * The default codepage detection also needs to use LC_CTYPE.
1614 *
1615 * Do not call setlocale(LC_*, "")! Using an empty string instead
1616 * of nullptr, will modify the libc behavior.
1617 */
1618 posixID = setlocale(category, nullptr);
1619 if ((posixID == nullptr)
1620 || (uprv_strcmp("C", posixID):: strcmp("C", posixID) == 0)
1621 || (uprv_strcmp("POSIX", posixID):: strcmp("POSIX", posixID) == 0))
1622 {
1623 /* Maybe we got some garbage. Try something more reasonable */
1624 posixID = getenv("LC_ALL");
1625 /* Solaris speaks POSIX - See IEEE Std 1003.1-2008
1626 * This is needed to properly handle empty env. variables
1627 */
1628#if U_PLATFORM4000 == U_PF_SOLARIS2600
1629 if ((posixID == 0) || (posixID[0] == '\0')) {
1630 posixID = getenv(category == LC_MESSAGES5 ? "LC_MESSAGES" : "LC_CTYPE");
1631 if ((posixID == 0) || (posixID[0] == '\0')) {
1632#else
1633 if (posixID == nullptr) {
1634 posixID = getenv(category == LC_MESSAGES5 ? "LC_MESSAGES" : "LC_CTYPE");
1635 if (posixID == nullptr) {
1636#endif
1637 posixID = getenv("LANG");
1638 }
1639 }
1640 }
1641 }
1642 if ((posixID == nullptr)
1643 || (uprv_strcmp("C", posixID):: strcmp("C", posixID) == 0)
1644 || (uprv_strcmp("POSIX", posixID):: strcmp("POSIX", posixID) == 0))
1645 {
1646 /* Nothing worked. Give it a nice POSIX default value. */
1647 posixID = "en_US_POSIX";
1648 // Note: this test will not catch 'C.UTF-8',
1649 // that will be handled in uprv_getDefaultLocaleID().
1650 // Leave this mapping here for the uprv_getPOSIXIDForDefaultCodepage()
1651 // caller which expects to see "en_US_POSIX" in many branches.
1652 }
1653 return posixID;
1654}
1655
1656/* Return just the POSIX id for the default locale, whatever happens to be in
1657 * it. It gets the value from LC_MESSAGES and indirectly from LC_ALL and LANG.
1658 */
1659static const char *uprv_getPOSIXIDForDefaultLocale()
1660{
1661 static const char* posixID = nullptr;
1662 if (posixID == nullptr) {
1663 posixID = uprv_getPOSIXIDForCategory(LC_MESSAGES5);
1664 }
1665 return posixID;
1666}
1667
1668#if !U_CHARSET_IS_UTF81
1669/* Return just the POSIX id for the default codepage, whatever happens to be in
1670 * it. It gets the value from LC_CTYPE and indirectly from LC_ALL and LANG.
1671 */
1672static const char *uprv_getPOSIXIDForDefaultCodepage()
1673{
1674 static const char* posixID = nullptr;
1675 if (posixID == 0) {
1676 posixID = uprv_getPOSIXIDForCategory(LC_CTYPE0);
1677 }
1678 return posixID;
1679}
1680#endif
1681#endif
1682
1683/* NOTE: The caller should handle thread safety */
1684U_CAPIextern "C" const char* U_EXPORT2
1685uprv_getDefaultLocaleIDuprv_getDefaultLocaleID_77()
1686{
1687#if U_POSIX_LOCALE1
1688/*
1689 Note that: (a '!' means the ID is improper somehow)
1690 LC_ALL ----> default_loc codepage
1691--------------------------------------------------------
1692 ab.CD ab CD
1693 ab@CD ab__CD -
1694 ab@CD.EF ab__CD EF
1695
1696 ab_CD.EF@GH ab_CD_GH EF
1697
1698Some 'improper' ways to do the same as above:
1699 ! ab_CD@GH.EF ab_CD_GH EF
1700 ! ab_CD.EF@GH.IJ ab_CD_GH EF
1701 ! ab_CD@ZZ.EF@GH.IJ ab_CD_GH EF
1702
1703 _CD@GH _CD_GH -
1704 _CD.EF@GH _CD_GH EF
1705
1706The variant cannot have dots in it.
1707The 'rightmost' variant (@xxx) wins.
1708The leftmost codepage (.xxx) wins.
1709*/
1710 const char* posixID = uprv_getPOSIXIDForDefaultLocale();
1711
1712 /* Format: (no spaces)
1713 ll [ _CC ] [ . MM ] [ @ VV]
1714
1715 l = lang, C = ctry, M = charmap, V = variant
1716 */
1717
1718 if (gCorrectedPOSIXLocale != nullptr) {
1719 return gCorrectedPOSIXLocale;
1720 }
1721
1722 // Copy the ID into owned memory.
1723 // Over-allocate in case we replace "C" with "en_US_POSIX" (+10), + null termination
1724 char *correctedPOSIXLocale = static_cast<char *>(uprv_mallocuprv_malloc_77(uprv_strlen(posixID):: strlen(posixID) + 10 + 1));
1725 if (correctedPOSIXLocale == nullptr) {
1726 return nullptr;
1727 }
1728 uprv_strcpy(correctedPOSIXLocale, posixID):: strcpy(correctedPOSIXLocale, posixID);
1729
1730 char *limit;
1731 if ((limit = uprv_strchr(correctedPOSIXLocale, '.'):: strchr(correctedPOSIXLocale, '.')) != nullptr) {
1732 *limit = 0;
1733 }
1734 if ((limit = uprv_strchr(correctedPOSIXLocale, '@'):: strchr(correctedPOSIXLocale, '@')) != nullptr) {
1735 *limit = 0;
1736 }
1737
1738 if ((uprv_strcmp("C", correctedPOSIXLocale):: strcmp("C", correctedPOSIXLocale) == 0) // no @ variant
1739 || (uprv_strcmp("POSIX", correctedPOSIXLocale):: strcmp("POSIX", correctedPOSIXLocale) == 0)) {
1740 // Raw input was C.* or POSIX.*, Give it a nice POSIX default value.
1741 // (The "C"/"POSIX" case is handled in uprv_getPOSIXIDForCategory())
1742 uprv_strcpy(correctedPOSIXLocale, "en_US_POSIX"):: strcpy(correctedPOSIXLocale, "en_US_POSIX");
1743 }
1744
1745 /* Note that we scan the *uncorrected* ID. */
1746 const char *p;
1747 if ((p = uprv_strrchr(posixID, '@'):: strrchr(posixID, '@')) != nullptr) {
1748 p++;
1749
1750 /* Take care of any special cases here.. */
1751 if (!uprv_strcmp(p, "nynorsk"):: strcmp(p, "nynorsk")) {
1752 p = "NY";
1753 /* Don't worry about no__NY. In practice, it won't appear. */
1754 }
1755
1756 if (uprv_strchr(correctedPOSIXLocale,'_'):: strchr(correctedPOSIXLocale, '_') == nullptr) {
1757 uprv_strcat(correctedPOSIXLocale, "__"):: strcat(correctedPOSIXLocale, "__"); /* aa@b -> aa__b (note this can make the new locale 1 char longer) */
1758 }
1759 else {
1760 uprv_strcat(correctedPOSIXLocale, "_"):: strcat(correctedPOSIXLocale, "_"); /* aa_CC@b -> aa_CC_b */
1761 }
1762
1763 const char *q;
1764 if ((q = uprv_strchr(p, '.'):: strchr(p, '.')) != nullptr) {
1765 /* How big will the resulting string be? */
1766 int32_t len = (int32_t)(uprv_strlen(correctedPOSIXLocale):: strlen(correctedPOSIXLocale) + (q-p));
1767 uprv_strncat(correctedPOSIXLocale, p, q-p):: strncat(correctedPOSIXLocale, p, q-p); // do not include charset
1768 correctedPOSIXLocale[len] = 0;
1769 }
1770 else {
1771 /* Anything following the @ sign */
1772 uprv_strcat(correctedPOSIXLocale, p):: strcat(correctedPOSIXLocale, p);
1773 }
1774
1775 /* Should there be a map from 'no@nynorsk' -> no_NO_NY here?
1776 * How about 'russian' -> 'ru'?
1777 * Many of the other locales using ISO codes will be handled by the
1778 * canonicalization functions in uloc_getDefault.
1779 */
1780 }
1781
1782 if (gCorrectedPOSIXLocale == nullptr) {
1783 gCorrectedPOSIXLocale = correctedPOSIXLocale;
1784 gCorrectedPOSIXLocaleHeapAllocated = true;
1785 ucln_common_registerCleanupucln_common_registerCleanup_77(UCLN_COMMON_PUTIL, putil_cleanup);
1786 correctedPOSIXLocale = nullptr;
1787 }
1788 posixID = gCorrectedPOSIXLocale;
1789
1790 if (correctedPOSIXLocale != nullptr) { /* Was already set - clean up. */
1791 uprv_freeuprv_free_77(correctedPOSIXLocale);
1792 }
1793
1794 return posixID;
1795
1796#elif U_PLATFORM_USES_ONLY_WIN32_API0
1797#define POSIX_LOCALE_CAPACITY 64
1798 UErrorCode status = U_ZERO_ERROR;
1799 char *correctedPOSIXLocale = nullptr;
1800
1801 // If we have already figured this out just use the cached value
1802 if (gCorrectedPOSIXLocale != nullptr) {
1803 return gCorrectedPOSIXLocale;
1804 }
1805
1806 // No cached value, need to determine the current value
1807 static WCHAR windowsLocale[LOCALE_NAME_MAX_LENGTH] = {};
1808 int length = GetLocaleInfoEx(LOCALE_NAME_USER_DEFAULT, LOCALE_SNAME, windowsLocale, LOCALE_NAME_MAX_LENGTH);
1809
1810 // Now we should have a Windows locale name that needs converted to the POSIX style.
1811 if (length > 0) // If length is 0, then the GetLocaleInfoEx failed.
1812 {
1813 // First we need to go from UTF-16 to char (and also convert from _ to - while we're at it.)
1814 char modifiedWindowsLocale[LOCALE_NAME_MAX_LENGTH] = {};
1815
1816 int32_t i;
1817 for (i = 0; i < UPRV_LENGTHOF(modifiedWindowsLocale)(int32_t)(sizeof(modifiedWindowsLocale)/sizeof((modifiedWindowsLocale
)[0])); i++)
1818 {
1819 if (windowsLocale[i] == '_')
1820 {
1821 modifiedWindowsLocale[i] = '-';
1822 }
1823 else
1824 {
1825 modifiedWindowsLocale[i] = static_cast<char>(windowsLocale[i]);
1826 }
1827
1828 if (modifiedWindowsLocale[i] == '\0')
1829 {
1830 break;
1831 }
1832 }
1833
1834 if (i >= UPRV_LENGTHOF(modifiedWindowsLocale)(int32_t)(sizeof(modifiedWindowsLocale)/sizeof((modifiedWindowsLocale
)[0])))
1835 {
1836 // Ran out of room, can't really happen, maybe we'll be lucky about a matching
1837 // locale when tags are dropped
1838 modifiedWindowsLocale[UPRV_LENGTHOF(modifiedWindowsLocale)(int32_t)(sizeof(modifiedWindowsLocale)/sizeof((modifiedWindowsLocale
)[0])) - 1] = '\0';
1839 }
1840
1841 // Now normalize the resulting name
1842 correctedPOSIXLocale = static_cast<char *>(uprv_mallocuprv_malloc_77(POSIX_LOCALE_CAPACITY + 1));
1843 /* TODO: Should we just exit on memory allocation failure? */
1844 if (correctedPOSIXLocale)
1845 {
1846 int32_t posixLen = uloc_canonicalizeuloc_canonicalize_77(modifiedWindowsLocale, correctedPOSIXLocale, POSIX_LOCALE_CAPACITY, &status);
1847 if (U_SUCCESS(status))
1848 {
1849 *(correctedPOSIXLocale + posixLen) = 0;
1850 gCorrectedPOSIXLocale = correctedPOSIXLocale;
1851 gCorrectedPOSIXLocaleHeapAllocated = true;
1852 ucln_common_registerCleanupucln_common_registerCleanup_77(UCLN_COMMON_PUTIL, putil_cleanup);
1853 }
1854 else
1855 {
1856 uprv_freeuprv_free_77(correctedPOSIXLocale);
1857 }
1858 }
1859 }
1860
1861 // If unable to find a locale we can agree upon, use en-US by default
1862 if (gCorrectedPOSIXLocale == nullptr) {
1863 gCorrectedPOSIXLocale = "en_US";
1864 }
1865 return gCorrectedPOSIXLocale;
1866
1867#elif U_PLATFORM4000 == U_PF_OS4009400
1868 /* locales are process scoped and are by definition thread safe */
1869 static char correctedLocale[64];
1870 const char *localeID = getenv("LC_ALL");
1871 char *p;
1872
1873 if (localeID == nullptr)
1874 localeID = getenv("LANG");
1875 if (localeID == nullptr)
1876 localeID = setlocale(LC_ALL6, nullptr);
1877 /* Make sure we have something... */
1878 if (localeID == nullptr)
1879 return "en_US_POSIX";
1880
1881 /* Extract the locale name from the path. */
1882 if((p = uprv_strrchr(localeID, '/'):: strrchr(localeID, '/')) != nullptr)
1883 {
1884 /* Increment p to start of locale name. */
1885 p++;
1886 localeID = p;
1887 }
1888
1889 /* Copy to work location. */
1890 uprv_strcpy(correctedLocale, localeID):: strcpy(correctedLocale, localeID);
1891
1892 /* Strip off the '.locale' extension. */
1893 if((p = uprv_strchr(correctedLocale, '.'):: strchr(correctedLocale, '.')) != nullptr) {
1894 *p = 0;
1895 }
1896
1897 /* Upper case the locale name. */
1898 T_CString_toUpperCaseT_CString_toUpperCase_77(correctedLocale);
1899
1900 /* See if we are using the POSIX locale. Any of the
1901 * following are equivalent and use the same QLGPGCMA
1902 * (POSIX) locale.
1903 * QLGPGCMA2 means UCS2
1904 * QLGPGCMA_4 means UTF-32
1905 * QLGPGCMA_8 means UTF-8
1906 */
1907 if ((uprv_strcmp("C", correctedLocale):: strcmp("C", correctedLocale) == 0) ||
1908 (uprv_strcmp("POSIX", correctedLocale):: strcmp("POSIX", correctedLocale) == 0) ||
1909 (uprv_strncmp("QLGPGCMA", correctedLocale, 8):: strncmp("QLGPGCMA", correctedLocale, 8) == 0))
1910 {
1911 uprv_strcpy(correctedLocale, "en_US_POSIX"):: strcpy(correctedLocale, "en_US_POSIX");
1912 }
1913 else
1914 {
1915 int16_t LocaleLen;
1916
1917 /* Lower case the lang portion. */
1918 for(p = correctedLocale; *p != 0 && *p != '_'; p++)
1919 {
1920 *p = uprv_toloweruprv_asciitolower_77(*p);
1921 }
1922
1923 /* Adjust for Euro. After '_E' add 'URO'. */
1924 LocaleLen = uprv_strlen(correctedLocale):: strlen(correctedLocale);
1925 if (correctedLocale[LocaleLen - 2] == '_' &&
1926 correctedLocale[LocaleLen - 1] == 'E')
1927 {
1928 uprv_strcat(correctedLocale, "URO"):: strcat(correctedLocale, "URO");
1929 }
1930
1931 /* If using Lotus-based locale then convert to
1932 * equivalent non Lotus.
1933 */
1934 else if (correctedLocale[LocaleLen - 2] == '_' &&
1935 correctedLocale[LocaleLen - 1] == 'L')
1936 {
1937 correctedLocale[LocaleLen - 2] = 0;
1938 }
1939
1940 /* There are separate simplified and traditional
1941 * locales called zh_HK_S and zh_HK_T.
1942 */
1943 else if (uprv_strncmp(correctedLocale, "zh_HK", 5):: strncmp(correctedLocale, "zh_HK", 5) == 0)
1944 {
1945 uprv_strcpy(correctedLocale, "zh_HK"):: strcpy(correctedLocale, "zh_HK");
1946 }
1947
1948 /* A special zh_CN_GBK locale...
1949 */
1950 else if (uprv_strcmp(correctedLocale, "zh_CN_GBK"):: strcmp(correctedLocale, "zh_CN_GBK") == 0)
1951 {
1952 uprv_strcpy(correctedLocale, "zh_CN"):: strcpy(correctedLocale, "zh_CN");
1953 }
1954
1955 }
1956
1957 return correctedLocale;
1958#endif
1959
1960}
1961
1962#if !U_CHARSET_IS_UTF81
1963#if U_POSIX_LOCALE1
1964/*
1965Due to various platform differences, one platform may specify a charset,
1966when they really mean a different charset. Remap the names so that they are
1967compatible with ICU. Only conflicting/ambiguous aliases should be resolved
1968here. Before adding anything to this function, please consider adding unique
1969names to the ICU alias table in the data directory.
1970*/
1971static const char*
1972remapPlatformDependentCodepage(const char *locale, const char *name) {
1973 if (locale != nullptr && *locale == 0) {
1974 /* Make sure that an empty locale is handled the same way. */
1975 locale = nullptr;
1976 }
1977 if (name == nullptr) {
1978 return nullptr;
1979 }
1980#if U_PLATFORM4000 == U_PF_AIX3100
1981 if (uprv_strcmp(name, "IBM-943"):: strcmp(name, "IBM-943") == 0) {
1982 /* Use the ASCII compatible ibm-943 */
1983 name = "Shift-JIS";
1984 }
1985 else if (uprv_strcmp(name, "IBM-1252"):: strcmp(name, "IBM-1252") == 0) {
1986 /* Use the windows-1252 that contains the Euro */
1987 name = "IBM-5348";
1988 }
1989#elif U_PLATFORM4000 == U_PF_SOLARIS2600
1990 if (locale != nullptr && uprv_strcmp(name, "EUC"):: strcmp(name, "EUC") == 0) {
1991 /* Solaris underspecifies the "EUC" name. */
1992 if (uprv_strcmp(locale, "zh_CN"):: strcmp(locale, "zh_CN") == 0) {
1993 name = "EUC-CN";
1994 }
1995 else if (uprv_strcmp(locale, "zh_TW"):: strcmp(locale, "zh_TW") == 0) {
1996 name = "EUC-TW";
1997 }
1998 else if (uprv_strcmp(locale, "ko_KR"):: strcmp(locale, "ko_KR") == 0) {
1999 name = "EUC-KR";
2000 }
2001 }
2002 else if (uprv_strcmp(name, "eucJP"):: strcmp(name, "eucJP") == 0) {
2003 /*
2004 ibm-954 is the best match.
2005 ibm-33722 is the default for eucJP (similar to Windows).
2006 */
2007 name = "eucjis";
2008 }
2009 else if (uprv_strcmp(name, "646"):: strcmp(name, "646") == 0) {
2010 /*
2011 * The default codepage given by Solaris is 646 but the C library routines treat it as if it was
2012 * ISO-8859-1 instead of US-ASCII(646).
2013 */
2014 name = "ISO-8859-1";
2015 }
2016#elif U_PLATFORM_IS_DARWIN_BASED0
2017 if (locale == nullptr && *name == 0) {
2018 /*
2019 No locale was specified, and an empty name was passed in.
2020 This usually indicates that nl_langinfo didn't return valid information.
2021 Mac OS X uses UTF-8 by default (especially the locale data and console).
2022 */
2023 name = "UTF-8";
2024 }
2025 else if (uprv_strcmp(name, "CP949"):: strcmp(name, "CP949") == 0) {
2026 /* Remap CP949 to a similar codepage to avoid issues with backslash and won symbol. */
2027 name = "EUC-KR";
2028 }
2029 else if (locale != nullptr && uprv_strcmp(locale, "en_US_POSIX"):: strcmp(locale, "en_US_POSIX") != 0 && uprv_strcmp(name, "US-ASCII"):: strcmp(name, "US-ASCII") == 0) {
2030 /*
2031 * For non C/POSIX locale, default the code page to UTF-8 instead of US-ASCII.
2032 */
2033 name = "UTF-8";
2034 }
2035#elif U_PLATFORM4000 == U_PF_BSD3000
2036 if (uprv_strcmp(name, "CP949"):: strcmp(name, "CP949") == 0) {
2037 /* Remap CP949 to a similar codepage to avoid issues with backslash and won symbol. */
2038 name = "EUC-KR";
2039 }
2040#elif U_PLATFORM4000 == U_PF_HPUX2100
2041 if (locale != nullptr && uprv_strcmp(locale, "zh_HK"):: strcmp(locale, "zh_HK") == 0 && uprv_strcmp(name, "big5"):: strcmp(name, "big5") == 0) {
2042 /* HP decided to extend big5 as hkbig5 even though it's not compatible :-( */
2043 /* zh_TW.big5 is not the same charset as zh_HK.big5! */
2044 name = "hkbig5";
2045 }
2046 else if (uprv_strcmp(name, "eucJP"):: strcmp(name, "eucJP") == 0) {
2047 /*
2048 ibm-1350 is the best match, but unavailable.
2049 ibm-954 is mostly a superset of ibm-1350.
2050 ibm-33722 is the default for eucJP (similar to Windows).
2051 */
2052 name = "eucjis";
2053 }
2054#elif U_PLATFORM4000 == U_PF_LINUX4000
2055 if (locale != nullptr && uprv_strcmp(name, "euc"):: strcmp(name, "euc") == 0) {
2056 /* Linux underspecifies the "EUC" name. */
2057 if (uprv_strcmp(locale, "korean"):: strcmp(locale, "korean") == 0) {
2058 name = "EUC-KR";
2059 }
2060 else if (uprv_strcmp(locale, "japanese"):: strcmp(locale, "japanese") == 0) {
2061 /* See comment below about eucJP */
2062 name = "eucjis";
2063 }
2064 }
2065 else if (uprv_strcmp(name, "eucjp"):: strcmp(name, "eucjp") == 0) {
2066 /*
2067 ibm-1350 is the best match, but unavailable.
2068 ibm-954 is mostly a superset of ibm-1350.
2069 ibm-33722 is the default for eucJP (similar to Windows).
2070 */
2071 name = "eucjis";
2072 }
2073 else if (locale != nullptr && uprv_strcmp(locale, "en_US_POSIX"):: strcmp(locale, "en_US_POSIX") != 0 &&
2074 (uprv_strcmp(name, "ANSI_X3.4-1968"):: strcmp(name, "ANSI_X3.4-1968") == 0 || uprv_strcmp(name, "US-ASCII"):: strcmp(name, "US-ASCII") == 0)) {
2075 /*
2076 * For non C/POSIX locale, default the code page to UTF-8 instead of US-ASCII.
2077 */
2078 name = "UTF-8";
2079 }
2080 /*
2081 * Linux returns ANSI_X3.4-1968 for C/POSIX, but the call site takes care of
2082 * it by falling back to 'US-ASCII' when nullptr is returned from this
2083 * function. So, we don't have to worry about it here.
2084 */
2085#endif
2086 /* return nullptr when "" is passed in */
2087 if (*name == 0) {
2088 name = nullptr;
2089 }
2090 return name;
2091}
2092
2093static const char*
2094getCodepageFromPOSIXID(const char *localeName, char * buffer, int32_t buffCapacity)
2095{
2096 char localeBuf[100];
2097 const char *name = nullptr;
2098 char *variant = nullptr;
2099
2100 if (localeName != nullptr && (name = (uprv_strchr(localeName, '.'):: strchr(localeName, '.'))) != nullptr) {
2101 size_t localeCapacity = uprv_minuprv_min_77(sizeof(localeBuf), (name-localeName)+1);
2102 uprv_strncpy(localeBuf, localeName, localeCapacity):: strncpy(localeBuf, localeName, localeCapacity);
2103 localeBuf[localeCapacity-1] = 0; /* ensure NUL termination */
2104 name = uprv_strncpy(buffer, name+1, buffCapacity):: strncpy(buffer, name+1, buffCapacity);
2105 buffer[buffCapacity-1] = 0; /* ensure NUL termination */
2106 if ((variant = const_cast<char *>(uprv_strchr(name, '@'):: strchr(name, '@'))) != nullptr) {
2107 *variant = 0;
2108 }
2109 name = remapPlatformDependentCodepage(localeBuf, name);
2110 }
2111 return name;
2112}
2113#endif
2114
2115static const char*
2116int_getDefaultCodepage()
2117{
2118#if U_PLATFORM4000 == U_PF_OS4009400
2119 uint32_t ccsid = 37; /* Default to ibm-37 */
2120 static char codepage[64];
2121 Qwc_JOBI0400_t jobinfo;
2122 Qus_EC_t error = { sizeof(Qus_EC_t) }; /* SPI error code */
2123
2124 EPT_CALL(QUSRJOBI)(&jobinfo, sizeof(jobinfo), "JOBI0400",
2125 "* ", " ", &error);
2126
2127 if (error.Bytes_Available == 0) {
2128 if (jobinfo.Coded_Char_Set_ID != 0xFFFF) {
2129 ccsid = (uint32_t)jobinfo.Coded_Char_Set_ID;
2130 }
2131 else if (jobinfo.Default_Coded_Char_Set_Id != 0xFFFF) {
2132 ccsid = (uint32_t)jobinfo.Default_Coded_Char_Set_Id;
2133 }
2134 /* else use the default */
2135 }
2136 snprintf(codepage, sizeof(codepage), "ibm-%d", ccsid);
2137 return codepage;
2138
2139#elif U_PLATFORM4000 == U_PF_OS3909000
2140 static char codepage[64];
2141
2142 strncpy(codepage, nl_langinfo(CODESETCODESET),63-strlen(UCNV_SWAP_LFNL_OPTION_STRING));
2143 strcat(codepage,UCNV_SWAP_LFNL_OPTION_STRING);
2144 codepage[63] = 0; /* NUL terminate */
2145
2146 return codepage;
2147
2148#elif U_PLATFORM_USES_ONLY_WIN32_API0
2149 static char codepage[64];
2150 DWORD codepageNumber = 0;
2151
2152#if U_PLATFORM_HAS_WINUWP_API0 == 1
2153 // UWP doesn't have a direct API to get the default ACP as Microsoft would rather
2154 // have folks use Unicode than a "system" code page, however this is the same
2155 // codepage as the system default locale codepage. (FWIW, the system locale is
2156 // ONLY used for codepage, it should never be used for anything else)
2157 GetLocaleInfoEx(LOCALE_NAME_SYSTEM_DEFAULT, LOCALE_IDEFAULTANSICODEPAGE | LOCALE_RETURN_NUMBER,
2158 (LPWSTR)&codepageNumber, sizeof(codepageNumber) / sizeof(WCHAR));
2159#else
2160 // Win32 apps can call GetACP
2161 codepageNumber = GetACP();
2162#endif
2163 // Special case for UTF-8
2164 if (codepageNumber == 65001)
2165 {
2166 return "UTF-8";
2167 }
2168 // Windows codepages can look like windows-1252, so format the found number
2169 // the numbers are eclectic, however all valid system code pages, besides UTF-8
2170 // are between 3 and 19999
2171 if (codepageNumber > 0 && codepageNumber < 20000)
2172 {
2173 snprintf(codepage, sizeof(codepage), "windows-%ld", codepageNumber);
2174 return codepage;
2175 }
2176 // If the codepage number call failed then return UTF-8
2177 return "UTF-8";
2178
2179#elif U_POSIX_LOCALE1
2180 static char codesetName[100];
2181 const char *localeName = nullptr;
2182 const char *name = nullptr;
2183
2184 localeName = uprv_getPOSIXIDForDefaultCodepage();
2185 uprv_memset(codesetName, 0, sizeof(codesetName)):: memset(codesetName, 0, sizeof(codesetName));
2186 /* On Solaris nl_langinfo returns C locale values unless setlocale
2187 * was called earlier.
2188 */
2189#if (U_HAVE_NL_LANGINFO_CODESET1 && U_PLATFORM4000 != U_PF_SOLARIS2600)
2190 /* When available, check nl_langinfo first because it usually gives more
2191 useful names. It depends on LC_CTYPE.
2192 nl_langinfo may use the same buffer as setlocale. */
2193 {
2194 const char *codeset = nl_langinfo(U_NL_LANGINFO_CODESETCODESET);
2195#if U_PLATFORM_IS_DARWIN_BASED0 || U_PLATFORM_IS_LINUX_BASED1
2196 /*
2197 * On Linux and MacOSX, ensure that default codepage for non C/POSIX locale is UTF-8
2198 * instead of ASCII.
2199 */
2200 if (uprv_strcmp(localeName, "en_US_POSIX"):: strcmp(localeName, "en_US_POSIX") != 0) {
2201 codeset = remapPlatformDependentCodepage(localeName, codeset);
2202 } else
2203#endif
2204 {
2205 codeset = remapPlatformDependentCodepage(nullptr, codeset);
2206 }
2207
2208 if (codeset != nullptr) {
2209 uprv_strncpy(codesetName, codeset, sizeof(codesetName)):: strncpy(codesetName, codeset, sizeof(codesetName));
2210 codesetName[sizeof(codesetName)-1] = 0;
2211 return codesetName;
2212 }
2213 }
2214#endif
2215
2216 /* Use setlocale in a nice way, and then check some environment variables.
2217 Maybe the application used setlocale already.
2218 */
2219 uprv_memset(codesetName, 0, sizeof(codesetName)):: memset(codesetName, 0, sizeof(codesetName));
2220 name = getCodepageFromPOSIXID(localeName, codesetName, sizeof(codesetName));
2221 if (name) {
2222 /* if we can find the codeset name from setlocale, return that. */
2223 return name;
2224 }
2225
2226 if (*codesetName == 0)
2227 {
2228 /* Everything failed. Return US ASCII (ISO 646). */
2229 (void)uprv_strcpy(codesetName, "US-ASCII"):: strcpy(codesetName, "US-ASCII");
2230 }
2231 return codesetName;
2232#else
2233 return "US-ASCII";
2234#endif
2235}
2236
2237
2238U_CAPIextern "C" const char* U_EXPORT2
2239uprv_getDefaultCodepage()
2240{
2241 static char const *name = nullptr;
2242 umtx_lockumtx_lock_77(nullptr);
2243 if (name == nullptr) {
2244 name = int_getDefaultCodepage();
2245 }
2246 umtx_unlockumtx_unlock_77(nullptr);
2247 return name;
2248}
2249#endif /* !U_CHARSET_IS_UTF8 */
2250
2251
2252/* end of platform-specific implementation -------------- */
2253
2254/* version handling --------------------------------------------------------- */
2255
2256U_CAPIextern "C" void U_EXPORT2
2257u_versionFromStringu_versionFromString_77(UVersionInfo versionArray, const char *versionString) {
2258 char *end;
2259 uint16_t part=0;
2260
2261 if(versionArray==nullptr) {
2262 return;
2263 }
2264
2265 if(versionString!=nullptr) {
2266 for(;;) {
2267 versionArray[part]=(uint8_t)uprv_strtoul(versionString, &end, 10):: strtoul(versionString, &end, 10);
2268 if(end==versionString || ++part==U_MAX_VERSION_LENGTH4 || *end!=U_VERSION_DELIMITER'.') {
2269 break;
2270 }
2271 versionString=end+1;
2272 }
2273 }
2274
2275 while(part<U_MAX_VERSION_LENGTH4) {
2276 versionArray[part++]=0;
2277 }
2278}
2279
2280U_CAPIextern "C" void U_EXPORT2
2281u_versionFromUStringu_versionFromUString_77(UVersionInfo versionArray, const char16_t *versionString) {
2282 if(versionArray!=nullptr && versionString!=nullptr) {
2283 char versionChars[U_MAX_VERSION_STRING_LENGTH20+1];
2284 int32_t len = u_strlenu_strlen_77(versionString);
2285 if(len>U_MAX_VERSION_STRING_LENGTH20) {
2286 len = U_MAX_VERSION_STRING_LENGTH20;
2287 }
2288 u_UCharsToCharsu_UCharsToChars_77(versionString, versionChars, len);
2289 versionChars[len]=0;
2290 u_versionFromStringu_versionFromString_77(versionArray, versionChars);
2291 }
2292}
2293
2294U_CAPIextern "C" void U_EXPORT2
2295u_versionToStringu_versionToString_77(const UVersionInfo versionArray, char *versionString) {
2296 uint16_t count, part;
2297 uint8_t field;
2298
2299 if(versionString==nullptr) {
2300 return;
2301 }
2302
2303 if(versionArray==nullptr) {
2304 versionString[0]=0;
2305 return;
2306 }
2307
2308 /* count how many fields need to be written */
2309 for(count=4; count>0 && versionArray[count-1]==0; --count) {
2310 }
2311
2312 if(count <= 1) {
2313 count = 2;
2314 }
2315
2316 /* write the first part */
2317 /* write the decimal field value */
2318 field=versionArray[0];
2319 if(field>=100) {
2320 *versionString++=(char)('0'+field/100);
2321 field%=100;
2322 }
2323 if(field>=10) {
2324 *versionString++=(char)('0'+field/10);
2325 field%=10;
2326 }
2327 *versionString++=(char)('0'+field);
2328
2329 /* write the following parts */
2330 for(part=1; part<count; ++part) {
2331 /* write a dot first */
2332 *versionString++=U_VERSION_DELIMITER'.';
2333
2334 /* write the decimal field value */
2335 field=versionArray[part];
2336 if(field>=100) {
2337 *versionString++=(char)('0'+field/100);
2338 field%=100;
2339 }
2340 if(field>=10) {
2341 *versionString++=(char)('0'+field/10);
2342 field%=10;
2343 }
2344 *versionString++=(char)('0'+field);
2345 }
2346
2347 /* NUL-terminate */
2348 *versionString=0;
2349}
2350
2351U_CAPIextern "C" void U_EXPORT2
2352u_getVersionu_getVersion_77(UVersionInfo versionArray) {
2353 (void)copyright; // Suppress unused variable warning from clang.
2354 u_versionFromStringu_versionFromString_77(versionArray, U_ICU_VERSION"77.1");
2355}
2356
2357/**
2358 * icucfg.h dependent code
2359 */
2360
2361#if U_ENABLE_DYLOAD0 && HAVE_DLOPEN1 && !U_PLATFORM_USES_ONLY_WIN32_API0
2362
2363#if HAVE_DLFCN_H1
2364#ifdef __MVS__
2365#ifndef __SUSV3
2366#define __SUSV3 1
2367#endif
2368#endif
2369#include <dlfcn.h>
2370#endif /* HAVE_DLFCN_H */
2371
2372U_CAPIextern "C" void * U_EXPORT2
2373uprv_dl_openuprv_dl_open_77(const char *libName, UErrorCode *status) {
2374 void *ret = nullptr;
2375 if(U_FAILURE(*status)) return ret;
2376 ret = dlopen(libName, RTLD_NOW|RTLD_GLOBAL);
2377 if(ret==nullptr) {
2378#ifdef U_TRACE_DYLOAD
2379 printf("dlerror on dlopen(%s): %s\n", libName, dlerror());
2380#endif
2381 *status = U_MISSING_RESOURCE_ERROR;
2382 }
2383 return ret;
2384}
2385
2386U_CAPIextern "C" void U_EXPORT2
2387uprv_dl_closeuprv_dl_close_77(void *lib, UErrorCode *status) {
2388 if(U_FAILURE(*status)) return;
2389 dlclose(lib);
2390}
2391
2392U_CAPIextern "C" UVoidFunction* U_EXPORT2
2393uprv_dlsym_funcuprv_dlsym_func_77(void *lib, const char* sym, UErrorCode *status) {
2394 union {
2395 UVoidFunction *fp;
2396 void *vp;
2397 } uret;
2398 uret.fp = nullptr;
2399 if(U_FAILURE(*status)) return uret.fp;
2400 uret.vp = dlsym(lib, sym);
2401 if(uret.vp == nullptr) {
2402#ifdef U_TRACE_DYLOAD
2403 printf("dlerror on dlsym(%p,%s): %s\n", lib,sym, dlerror());
2404#endif
2405 *status = U_MISSING_RESOURCE_ERROR;
2406 }
2407 return uret.fp;
2408}
2409
2410#elif U_ENABLE_DYLOAD0 && U_PLATFORM_USES_ONLY_WIN32_API0 && !U_PLATFORM_HAS_WINUWP_API0
2411
2412/* Windows API implementation. */
2413// Note: UWP does not expose/allow these APIs, so the UWP version gets the null implementation. */
2414
2415U_CAPIextern "C" void * U_EXPORT2
2416uprv_dl_openuprv_dl_open_77(const char *libName, UErrorCode *status) {
2417 HMODULE lib = nullptr;
2418
2419 if(U_FAILURE(*status)) return nullptr;
2420
2421 lib = LoadLibraryA(libName);
2422
2423 if(lib==nullptr) {
2424 *status = U_MISSING_RESOURCE_ERROR;
2425 }
2426
2427 return (void*)lib;
2428}
2429
2430U_CAPIextern "C" void U_EXPORT2
2431uprv_dl_closeuprv_dl_close_77(void *lib, UErrorCode *status) {
2432 HMODULE handle = (HMODULE)lib;
2433 if(U_FAILURE(*status)) return;
2434
2435 FreeLibrary(handle);
2436
2437 return;
2438}
2439
2440U_CAPIextern "C" UVoidFunction* U_EXPORT2
2441uprv_dlsym_funcuprv_dlsym_func_77(void *lib, const char* sym, UErrorCode *status) {
2442 HMODULE handle = (HMODULE)lib;
2443 UVoidFunction* addr = nullptr;
2444
2445 if(U_FAILURE(*status) || lib==nullptr) return nullptr;
2446
2447 addr = (UVoidFunction*)GetProcAddress(handle, sym);
2448
2449 if(addr==nullptr) {
2450 DWORD lastError = GetLastError();
2451 if(lastError == ERROR_PROC_NOT_FOUND) {
2452 *status = U_MISSING_RESOURCE_ERROR;
2453 } else {
2454 *status = U_UNSUPPORTED_ERROR; /* other unknown error. */
2455 }
2456 }
2457
2458 return addr;
2459}
2460
2461#else
2462
2463/* No dynamic loading, null (nonexistent) implementation. */
2464
2465U_CAPIextern "C" void * U_EXPORT2
2466uprv_dl_openuprv_dl_open_77(const char *libName, UErrorCode *status) {
2467 (void)libName;
2468 if(U_FAILURE(*status)) return nullptr;
2469 *status = U_UNSUPPORTED_ERROR;
2470 return nullptr;
2471}
2472
2473U_CAPIextern "C" void U_EXPORT2
2474uprv_dl_closeuprv_dl_close_77(void *lib, UErrorCode *status) {
2475 (void)lib;
2476 if(U_FAILURE(*status)) return;
2477 *status = U_UNSUPPORTED_ERROR;
2478 return;
2479}
2480
2481U_CAPIextern "C" UVoidFunction* U_EXPORT2
2482uprv_dlsym_funcuprv_dlsym_func_77(void *lib, const char* sym, UErrorCode *status) {
2483 (void)lib;
2484 (void)sym;
2485 if(U_SUCCESS(*status)) {
2486 *status = U_UNSUPPORTED_ERROR;
2487 }
2488 return (UVoidFunction*)nullptr;
2489}
2490
2491#endif
2492
2493/*
2494 * Hey, Emacs, please set the following:
2495 *
2496 * Local Variables:
2497 * indent-tabs-mode: nil
2498 * End:
2499 *
2500 */