Bug Summary

File:root/firefox-clang/intl/icu/source/i18n/dtitvfmt.cpp
Warning:line 335, column 20
The left operand of '!=' is a garbage value

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 dtitvfmt.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/i18n -fcoverage-compilation-dir=/root/firefox-clang/obj-x86_64-pc-linux-gnu/config/external/icu/i18n -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_I18N_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/i18n -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/config/external/icu/i18n -I /root/firefox-clang/intl/icu/source/common -I /root/firefox-clang/mfbt/double-conversion -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/i18n/dtitvfmt.cpp
1// © 2016 and later: Unicode, Inc. and others.
2// License & terms of use: http://www.unicode.org/copyright.html
3/*******************************************************************************
4* Copyright (C) 2008-2016, International Business Machines Corporation and
5* others. All Rights Reserved.
6*******************************************************************************
7*
8* File DTITVFMT.CPP
9*
10*******************************************************************************
11*/
12
13#include "utypeinfo.h" // for 'typeid' to work
14
15#include "unicode/dtitvfmt.h"
16
17#if !UCONFIG_NO_FORMATTING0
18
19//TODO: put in compilation
20//#define DTITVFMT_DEBUG 1
21
22#include "unicode/calendar.h"
23#include "unicode/dtptngen.h"
24#include "unicode/dtitvinf.h"
25#include "unicode/simpleformatter.h"
26#include "unicode/udisplaycontext.h"
27#include "cmemory.h"
28#include "cstring.h"
29#include "dtitv_impl.h"
30#include "mutex.h"
31#include "uresimp.h"
32#include "formattedval_impl.h"
33
34#ifdef DTITVFMT_DEBUG
35#include <iostream>
36#endif
37
38U_NAMESPACE_BEGINnamespace icu_77 {
39
40
41
42#ifdef DTITVFMT_DEBUG
43#define PRINTMESG(msg) { std::cout << "(" << __FILE__"/root/firefox-clang/intl/icu/source/i18n/dtitvfmt.cpp" << ":" << __LINE__43 << ") " << msg << "\n"; }
44#endif
45
46
47static const char16_t gDateFormatSkeleton[][11] = {
48//yMMMMEEEEd
49{LOW_Y((char16_t)0x0079), CAP_M((char16_t)0x004D), CAP_M((char16_t)0x004D), CAP_M((char16_t)0x004D), CAP_M((char16_t)0x004D), CAP_E((char16_t)0x0045), CAP_E((char16_t)0x0045), CAP_E((char16_t)0x0045), CAP_E((char16_t)0x0045), LOW_D((char16_t)0x0064), 0},
50//yMMMMd
51{LOW_Y((char16_t)0x0079), CAP_M((char16_t)0x004D), CAP_M((char16_t)0x004D), CAP_M((char16_t)0x004D), CAP_M((char16_t)0x004D), LOW_D((char16_t)0x0064), 0},
52//yMMMd
53{LOW_Y((char16_t)0x0079), CAP_M((char16_t)0x004D), CAP_M((char16_t)0x004D), CAP_M((char16_t)0x004D), LOW_D((char16_t)0x0064), 0},
54//yMd
55{LOW_Y((char16_t)0x0079), CAP_M((char16_t)0x004D), LOW_D((char16_t)0x0064), 0} };
56
57
58static const char gCalendarTag[] = "calendar";
59static const char gGregorianTag[] = "gregorian";
60static const char gDateTimePatternsTag[] = "DateTimePatterns";
61
62
63// latestFirst:
64static const char16_t gLaterFirstPrefix[] = {LOW_L((char16_t)0x006C), LOW_A((char16_t)0x0061), LOW_T((char16_t)0x0074), LOW_E((char16_t)0x0065), LOW_S((char16_t)0x0073),LOW_T((char16_t)0x0074), CAP_F((char16_t)0x0046), LOW_I((char16_t)0x0069), LOW_R((char16_t)0x0072), LOW_S((char16_t)0x0073), LOW_T((char16_t)0x0074), COLON((char16_t)0x003A)};
65
66// earliestFirst:
67static const char16_t gEarlierFirstPrefix[] = {LOW_E((char16_t)0x0065), LOW_A((char16_t)0x0061), LOW_R((char16_t)0x0072), LOW_L((char16_t)0x006C), LOW_I((char16_t)0x0069), LOW_E((char16_t)0x0065), LOW_S((char16_t)0x0073), LOW_T((char16_t)0x0074), CAP_F((char16_t)0x0046), LOW_I((char16_t)0x0069), LOW_R((char16_t)0x0072), LOW_S((char16_t)0x0073), LOW_T((char16_t)0x0074), COLON((char16_t)0x003A)};
68
69
70class FormattedDateIntervalData : public FormattedValueFieldPositionIteratorImpl {
71public:
72 FormattedDateIntervalData(UErrorCode& status) : FormattedValueFieldPositionIteratorImpl(5, status) {}
73 virtual ~FormattedDateIntervalData();
74};
75
76FormattedDateIntervalData::~FormattedDateIntervalData() = default;
77
78UPRV_FORMATTED_VALUE_SUBCLASS_AUTO_IMPL(FormattedDateInterval)FormattedDateInterval::FormattedDateInterval(FormattedDateInterval
&& src) noexcept : fData(src.fData), fErrorCode(src.fErrorCode
) { src.fData = nullptr; src.fErrorCode = U_INVALID_STATE_ERROR
; } FormattedDateInterval::~FormattedDateInterval() { delete fData
; fData = nullptr; } FormattedDateInterval& FormattedDateInterval
::operator=(FormattedDateInterval&& src) noexcept { delete
fData; fData = src.fData; src.fData = nullptr; fErrorCode = src
.fErrorCode; src.fErrorCode = U_INVALID_STATE_ERROR; return *
this; } UnicodeString FormattedDateInterval::toString(UErrorCode
& status) const { if (U_FAILURE(status)) { return ICU_Utility
::makeBogusString(); } if (fData == nullptr) { status = fErrorCode
; return ICU_Utility::makeBogusString(); } return fData->toString
(status); } UnicodeString FormattedDateInterval::toTempString
(UErrorCode& status) const { if (U_FAILURE(status)) { return
ICU_Utility::makeBogusString(); } if (fData == nullptr) { status
= fErrorCode; return ICU_Utility::makeBogusString(); } return
fData->toTempString(status); } Appendable& FormattedDateInterval
::appendTo(Appendable& appendable, UErrorCode& status
) const { if (U_FAILURE(status)) { return appendable; } if (fData
== nullptr) { status = fErrorCode; return appendable; } return
fData->appendTo(appendable, status); } UBool FormattedDateInterval
::nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode
& status) const { if (U_FAILURE(status)) { return false; }
if (fData == nullptr) { status = fErrorCode; return false; }
return fData->nextPosition(cfpos, status); }
79
80
81UOBJECT_DEFINE_RTTI_IMPLEMENTATION(DateIntervalFormat)UClassID DateIntervalFormat::getStaticClassID() { static char
classID = 0; return (UClassID)&classID; } UClassID DateIntervalFormat
::getDynamicClassID() const { return DateIntervalFormat::getStaticClassID
(); }
82
83// Mutex, protects access to fDateFormat, fFromCalendar and fToCalendar.
84// Needed because these data members are modified by const methods of DateIntervalFormat.
85
86static UMutex gFormatterMutex;
87
88DateIntervalFormat* U_EXPORT2
89DateIntervalFormat::createInstance(const UnicodeString& skeleton,
90 UErrorCode& status) {
91 return createInstance(skeleton, Locale::getDefault(), status);
92}
93
94
95DateIntervalFormat* U_EXPORT2
96DateIntervalFormat::createInstance(const UnicodeString& skeleton,
97 const Locale& locale,
98 UErrorCode& status) {
99#ifdef DTITVFMT_DEBUG
100 char result[1000];
101 char result_1[1000];
102 char mesg[2000];
103 skeleton.extract(0, skeleton.length(), result, "UTF-8");
104 UnicodeString pat;
105 ((SimpleDateFormat*)dtfmt)->toPattern(pat);
106 pat.extract(0, pat.length(), result_1, "UTF-8");
107 snprintf(mesg, sizeof(mesg), "skeleton: %s; pattern: %s\n", result, result_1);
108 PRINTMESG(mesg)
109#endif
110
111 DateIntervalInfo* dtitvinf = new DateIntervalInfo(locale, status);
112 if (dtitvinf == nullptr) {
113 status = U_MEMORY_ALLOCATION_ERROR;
114 return nullptr;
115 }
116 return create(locale, dtitvinf, &skeleton, status);
117}
118
119
120
121DateIntervalFormat* U_EXPORT2
122DateIntervalFormat::createInstance(const UnicodeString& skeleton,
123 const DateIntervalInfo& dtitvinf,
124 UErrorCode& status) {
125 return createInstance(skeleton, Locale::getDefault(), dtitvinf, status);
126}
127
128
129DateIntervalFormat* U_EXPORT2
130DateIntervalFormat::createInstance(const UnicodeString& skeleton,
131 const Locale& locale,
132 const DateIntervalInfo& dtitvinf,
133 UErrorCode& status) {
134 DateIntervalInfo* ptn = dtitvinf.clone();
135 return create(locale, ptn, &skeleton, status);
136}
137
138
139DateIntervalFormat::DateIntervalFormat()
140: fInfo(nullptr),
141 fDateFormat(nullptr),
142 fFromCalendar(nullptr),
143 fToCalendar(nullptr),
144 fLocale(Locale::getRoot()),
145 fDatePattern(nullptr),
146 fTimePattern(nullptr),
147 fDateTimeFormat(nullptr),
148 fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE)
149{}
150
151
152DateIntervalFormat::DateIntervalFormat(const DateIntervalFormat& itvfmt)
153: Format(itvfmt),
154 fInfo(nullptr),
155 fDateFormat(nullptr),
156 fFromCalendar(nullptr),
157 fToCalendar(nullptr),
158 fLocale(itvfmt.fLocale),
159 fDatePattern(nullptr),
160 fTimePattern(nullptr),
161 fDateTimeFormat(nullptr),
162 fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE) {
163 *this = itvfmt;
164}
165
166
167DateIntervalFormat&
168DateIntervalFormat::operator=(const DateIntervalFormat& itvfmt) {
169 if ( this != &itvfmt ) {
170 delete fDateFormat;
171 delete fInfo;
172 delete fFromCalendar;
173 delete fToCalendar;
174 delete fDatePattern;
175 delete fTimePattern;
176 delete fDateTimeFormat;
177 {
178 Mutex lock(&gFormatterMutex);
179 if ( itvfmt.fDateFormat ) {
180 fDateFormat = itvfmt.fDateFormat->clone();
181 } else {
182 fDateFormat = nullptr;
183 }
184 if ( itvfmt.fFromCalendar ) {
185 fFromCalendar = itvfmt.fFromCalendar->clone();
186 } else {
187 fFromCalendar = nullptr;
188 }
189 if ( itvfmt.fToCalendar ) {
190 fToCalendar = itvfmt.fToCalendar->clone();
191 } else {
192 fToCalendar = nullptr;
193 }
194 }
195 if ( itvfmt.fInfo ) {
196 fInfo = itvfmt.fInfo->clone();
197 } else {
198 fInfo = nullptr;
199 }
200 fSkeleton = itvfmt.fSkeleton;
201 int8_t i;
202 for ( i = 0; i< DateIntervalInfo::kIPI_MAX_INDEX; ++i ) {
203 fIntervalPatterns[i] = itvfmt.fIntervalPatterns[i];
204 }
205 fLocale = itvfmt.fLocale;
206 fDatePattern = (itvfmt.fDatePattern)? itvfmt.fDatePattern->clone(): nullptr;
207 fTimePattern = (itvfmt.fTimePattern)? itvfmt.fTimePattern->clone(): nullptr;
208 fDateTimeFormat = (itvfmt.fDateTimeFormat)? itvfmt.fDateTimeFormat->clone(): nullptr;
209 fCapitalizationContext = itvfmt.fCapitalizationContext;
210 }
211 return *this;
212}
213
214
215DateIntervalFormat::~DateIntervalFormat() {
216 delete fInfo;
217 delete fDateFormat;
218 delete fFromCalendar;
219 delete fToCalendar;
220 delete fDatePattern;
221 delete fTimePattern;
222 delete fDateTimeFormat;
223}
224
225
226DateIntervalFormat*
227DateIntervalFormat::clone() const {
228 return new DateIntervalFormat(*this);
229}
230
231
232bool
233DateIntervalFormat::operator==(const Format& other) const {
234 if (typeid(*this) != typeid(other)) {return false;}
235 const DateIntervalFormat* fmt = (DateIntervalFormat*)&other;
236 if (this == fmt) {return true;}
237 if (!Format::operator==(other)) {return false;}
238 if ((fInfo != fmt->fInfo) && (fInfo == nullptr || fmt->fInfo == nullptr)) {return false;}
239 if (fInfo && fmt->fInfo && (*fInfo != *fmt->fInfo )) {return false;}
240 {
241 Mutex lock(&gFormatterMutex);
242 if (fDateFormat != fmt->fDateFormat && (fDateFormat == nullptr || fmt->fDateFormat == nullptr)) {return false;}
243 if (fDateFormat && fmt->fDateFormat && (*fDateFormat != *fmt->fDateFormat)) {return false;}
244 }
245 // note: fFromCalendar and fToCalendar hold no persistent state, and therefore do not participate in operator ==.
246 // fDateFormat has the primary calendar for the DateIntervalFormat.
247 if (fSkeleton != fmt->fSkeleton) {return false;}
248 if (fDatePattern != fmt->fDatePattern && (fDatePattern == nullptr || fmt->fDatePattern == nullptr)) {return false;}
249 if (fDatePattern && fmt->fDatePattern && (*fDatePattern != *fmt->fDatePattern)) {return false;}
250 if (fTimePattern != fmt->fTimePattern && (fTimePattern == nullptr || fmt->fTimePattern == nullptr)) {return false;}
251 if (fTimePattern && fmt->fTimePattern && (*fTimePattern != *fmt->fTimePattern)) {return false;}
252 if (fDateTimeFormat != fmt->fDateTimeFormat && (fDateTimeFormat == nullptr || fmt->fDateTimeFormat == nullptr)) {return false;}
253 if (fDateTimeFormat && fmt->fDateTimeFormat && (*fDateTimeFormat != *fmt->fDateTimeFormat)) {return false;}
254 if (fLocale != fmt->fLocale) {return false;}
255
256 for (int32_t i = 0; i< DateIntervalInfo::kIPI_MAX_INDEX; ++i ) {
257 if (fIntervalPatterns[i].firstPart != fmt->fIntervalPatterns[i].firstPart) {return false;}
258 if (fIntervalPatterns[i].secondPart != fmt->fIntervalPatterns[i].secondPart ) {return false;}
259 if (fIntervalPatterns[i].laterDateFirst != fmt->fIntervalPatterns[i].laterDateFirst) {return false;}
260 }
261 if (fCapitalizationContext != fmt->fCapitalizationContext) {return false;}
262 return true;
263}
264
265
266UnicodeString&
267DateIntervalFormat::format(const Formattable& obj,
268 UnicodeString& appendTo,
269 FieldPosition& fieldPosition,
270 UErrorCode& status) const {
271 if ( U_FAILURE(status) ) {
272 return appendTo;
273 }
274
275 if ( obj.getType() == Formattable::kObject ) {
276 const UObject* formatObj = obj.getObject();
277 const DateInterval* interval = dynamic_cast<const DateInterval*>(formatObj);
278 if (interval != nullptr) {
279 return format(interval, appendTo, fieldPosition, status);
280 }
281 }
282 status = U_ILLEGAL_ARGUMENT_ERROR;
283 return appendTo;
284}
285
286
287UnicodeString&
288DateIntervalFormat::format(const DateInterval* dtInterval,
289 UnicodeString& appendTo,
290 FieldPosition& fieldPosition,
291 UErrorCode& status) const {
292 if ( U_FAILURE(status) ) {
293 return appendTo;
294 }
295 if (fDateFormat == nullptr || fInfo == nullptr) {
296 status = U_INVALID_STATE_ERROR;
297 return appendTo;
298 }
299
300 FieldPositionOnlyHandler handler(fieldPosition);
301 handler.setAcceptFirstOnly(true);
302 int8_t ignore;
303
304 Mutex lock(&gFormatterMutex);
305 return formatIntervalImpl(*dtInterval, appendTo, ignore, handler, status);
306}
307
308
309FormattedDateInterval DateIntervalFormat::formatToValue(
310 const DateInterval& dtInterval,
311 UErrorCode& status) const {
312 if (U_FAILURE(status)) {
1
Taking false branch
→
313 return FormattedDateInterval(status);
314 }
315 // LocalPointer only sets OOM status if U_SUCCESS is true.
316 LocalPointer<FormattedDateIntervalData> result(new FormattedDateIntervalData(status), status);
317 if (U_FAILURE(status)) {
2
←
Taking false branch
→
318 return FormattedDateInterval(status);
319 }
320 UnicodeString string;
321 int8_t firstIndex;
3
←
'firstIndex' declared without an initial value
→
322 auto handler = result->getHandler(status);
323 handler.setCategory(UFIELD_CATEGORY_DATE);
324 {
325 Mutex lock(&gFormatterMutex);
326 formatIntervalImpl(dtInterval, string, firstIndex, handler, status);
4
←
Calling 'DateIntervalFormat::formatIntervalImpl'
→
7
←
Returning from 'DateIntervalFormat::formatIntervalImpl'
→
327 }
328 handler.getError(status);
329 result->appendString(string, status);
330 if (U_FAILURE(status)) {
8
←
Taking false branch
→
331 return FormattedDateInterval(status);
332 }
333
334 // Compute the span fields and sort them into place:
335 if (firstIndex != -1) {
9
←
The left operand of '!=' is a garbage value
336 result->addOverlapSpans(UFIELD_CATEGORY_DATE_INTERVAL_SPAN, firstIndex, status);
337 if (U_FAILURE(status)) {
338 return FormattedDateInterval(status);
339 }
340 result->sort();
341 }
342
343 return FormattedDateInterval(result.orphan());
344}
345
346
347UnicodeString&
348DateIntervalFormat::format(Calendar& fromCalendar,
349 Calendar& toCalendar,
350 UnicodeString& appendTo,
351 FieldPosition& pos,
352 UErrorCode& status) const {
353 FieldPositionOnlyHandler handler(pos);
354 handler.setAcceptFirstOnly(true);
355 int8_t ignore;
356
357 Mutex lock(&gFormatterMutex);
358 return formatImpl(fromCalendar, toCalendar, appendTo, ignore, handler, status);
359}
360
361
362FormattedDateInterval DateIntervalFormat::formatToValue(
363 Calendar& fromCalendar,
364 Calendar& toCalendar,
365 UErrorCode& status) const {
366 if (U_FAILURE(status)) {
367 return FormattedDateInterval(status);
368 }
369 // LocalPointer only sets OOM status if U_SUCCESS is true.
370 LocalPointer<FormattedDateIntervalData> result(new FormattedDateIntervalData(status), status);
371 if (U_FAILURE(status)) {
372 return FormattedDateInterval(status);
373 }
374 UnicodeString string;
375 int8_t firstIndex;
376 auto handler = result->getHandler(status);
377 handler.setCategory(UFIELD_CATEGORY_DATE);
378 {
379 Mutex lock(&gFormatterMutex);
380 formatImpl(fromCalendar, toCalendar, string, firstIndex, handler, status);
381 }
382 handler.getError(status);
383 result->appendString(string, status);
384 if (U_FAILURE(status)) {
385 return FormattedDateInterval(status);
386 }
387
388 // Compute the span fields and sort them into place:
389 if (firstIndex != -1) {
390 result->addOverlapSpans(UFIELD_CATEGORY_DATE_INTERVAL_SPAN, firstIndex, status);
391 result->sort();
392 }
393
394 return FormattedDateInterval(result.orphan());
395}
396
397
398UnicodeString& DateIntervalFormat::formatIntervalImpl(
399 const DateInterval& dtInterval,
400 UnicodeString& appendTo,
401 int8_t& firstIndex,
402 FieldPositionHandler& fphandler,
403 UErrorCode& status) const {
404 if (U_FAILURE(status)) {
5
←
Taking true branch
→
405 return appendTo;
6
←
Returning without writing to 'firstIndex'
→
406 }
407 if (fFromCalendar == nullptr || fToCalendar == nullptr) {
408 status = U_INVALID_STATE_ERROR;
409 return appendTo;
410 }
411 fFromCalendar->setTime(dtInterval.getFromDate(), status);
412 fToCalendar->setTime(dtInterval.getToDate(), status);
413 return formatImpl(*fFromCalendar, *fToCalendar, appendTo, firstIndex, fphandler, status);
414}
415
416
417// The following is only called from within the gFormatterMutex lock
418UnicodeString&
419DateIntervalFormat::formatImpl(Calendar& fromCalendar,
420 Calendar& toCalendar,
421 UnicodeString& appendTo,
422 int8_t& firstIndex,
423 FieldPositionHandler& fphandler,
424 UErrorCode& status) const {
425 if ( U_FAILURE(status) ) {
426 return appendTo;
427 }
428
429 // Initialize firstIndex to -1 (single date, no range)
430 firstIndex = -1;
431
432 // not support different calendar types and time zones
433 //if ( fromCalendar.getType() != toCalendar.getType() ) {
434 if ( !fromCalendar.isEquivalentTo(toCalendar) ) {
435 status = U_ILLEGAL_ARGUMENT_ERROR;
436 return appendTo;
437 }
438
439 // First, find the largest different calendar field.
440 UCalendarDateFields field = UCAL_FIELD_COUNT;
441
442 if ( fromCalendar.get(UCAL_ERA,status) != toCalendar.get(UCAL_ERA,status)) {
443 field = UCAL_ERA;
444 } else if ( fromCalendar.get(UCAL_YEAR, status) !=
445 toCalendar.get(UCAL_YEAR, status) ) {
446 field = UCAL_YEAR;
447 } else if ( fromCalendar.get(UCAL_MONTH, status) !=
448 toCalendar.get(UCAL_MONTH, status) ) {
449 field = UCAL_MONTH;
450 } else if ( fromCalendar.get(UCAL_DATE, status) !=
451 toCalendar.get(UCAL_DATE, status) ) {
452 field = UCAL_DATE;
453 } else if ( fromCalendar.get(UCAL_AM_PM, status) !=
454 toCalendar.get(UCAL_AM_PM, status) ) {
455 field = UCAL_AM_PM;
456 } else if ( fromCalendar.get(UCAL_HOUR, status) !=
457 toCalendar.get(UCAL_HOUR, status) ) {
458 field = UCAL_HOUR;
459 } else if ( fromCalendar.get(UCAL_MINUTE, status) !=
460 toCalendar.get(UCAL_MINUTE, status) ) {
461 field = UCAL_MINUTE;
462 } else if ( fromCalendar.get(UCAL_SECOND, status) !=
463 toCalendar.get(UCAL_SECOND, status) ) {
464 field = UCAL_SECOND;
465 } else if ( fromCalendar.get(UCAL_MILLISECOND, status) !=
466 toCalendar.get(UCAL_MILLISECOND, status) ) {
467 field = UCAL_MILLISECOND;
468 }
469
470 if ( U_FAILURE(status) ) {
471 return appendTo;
472 }
473 UErrorCode tempStatus = U_ZERO_ERROR; // for setContext, ignored
474 // Set up fDateFormat to handle the first or only part of the interval
475 // (override later for any second part). Inside lock, OK to modify fDateFormat.
476 fDateFormat->setContext(fCapitalizationContext, tempStatus);
477
478 if ( field == UCAL_FIELD_COUNT ) {
479 /* ignore the millisecond etc. small fields' difference.
480 * use single date when all the above are the same.
481 */
482 return fDateFormat->_format(fromCalendar, appendTo, fphandler, status);
483 }
484 UBool fromToOnSameDay = (field==UCAL_AM_PM || field==UCAL_HOUR || field==UCAL_MINUTE || field==UCAL_SECOND || field==UCAL_MILLISECOND);
485
486 // following call should not set wrong status,
487 // all the pass-in fields are valid till here
488 int32_t itvPtnIndex = DateIntervalInfo::calendarFieldToIntervalIndex(field,
489 status);
490 const PatternInfo& intervalPattern = fIntervalPatterns[itvPtnIndex];
491
492 if ( intervalPattern.firstPart.isEmpty() &&
493 intervalPattern.secondPart.isEmpty() ) {
494 if ( fDateFormat->isFieldUnitIgnored(field) ) {
495 /* the largest different calendar field is small than
496 * the smallest calendar field in pattern,
497 * return single date format.
498 */
499 return fDateFormat->_format(fromCalendar, appendTo, fphandler, status);
500 }
501 return fallbackFormat(fromCalendar, toCalendar, fromToOnSameDay, appendTo, firstIndex, fphandler, status);
502 }
503 // If the first part in interval pattern is empty,
504 // the 2nd part of it saves the full-pattern used in fall-back.
505 // For a 'real' interval pattern, the first part will never be empty.
506 if ( intervalPattern.firstPart.isEmpty() ) {
507 // fall back
508 UnicodeString originalPattern;
509 fDateFormat->toPattern(originalPattern);
510 fDateFormat->applyPattern(intervalPattern.secondPart);
511 appendTo = fallbackFormat(fromCalendar, toCalendar, fromToOnSameDay, appendTo, firstIndex, fphandler, status);
512 fDateFormat->applyPattern(originalPattern);
513 return appendTo;
514 }
515 Calendar* firstCal;
516 Calendar* secondCal;
517 if ( intervalPattern.laterDateFirst ) {
518 firstCal = &toCalendar;
519 secondCal = &fromCalendar;
520 firstIndex = 1;
521 } else {
522 firstCal = &fromCalendar;
523 secondCal = &toCalendar;
524 firstIndex = 0;
525 }
526 // break the interval pattern into 2 parts,
527 // first part should not be empty,
528 UnicodeString originalPattern;
529 fDateFormat->toPattern(originalPattern);
530 fDateFormat->applyPattern(intervalPattern.firstPart);
531 fDateFormat->_format(*firstCal, appendTo, fphandler, status);
532
533 if ( !intervalPattern.secondPart.isEmpty() ) {
534 fDateFormat->applyPattern(intervalPattern.secondPart);
535 // No capitalization for second part of interval
536 tempStatus = U_ZERO_ERROR;
537 fDateFormat->setContext(UDISPCTX_CAPITALIZATION_NONE, tempStatus);
538 fDateFormat->_format(*secondCal, appendTo, fphandler, status);
539 }
540 fDateFormat->applyPattern(originalPattern);
541 return appendTo;
542}
543
544
545
546void
547DateIntervalFormat::parseObject(const UnicodeString& /* source */,
548 Formattable& /* result */,
549 ParsePosition& /* parse_pos */) const {
550 // parseObject(const UnicodeString&, Formattable&, UErrorCode&) const
551 // will set status as U_INVALID_FORMAT_ERROR if
552 // parse_pos is still 0
553}
554
555
556
557
558const DateIntervalInfo*
559DateIntervalFormat::getDateIntervalInfo() const {
560 return fInfo;
561}
562
563
564void
565DateIntervalFormat::setDateIntervalInfo(const DateIntervalInfo& newItvPattern,
566 UErrorCode& status) {
567 delete fInfo;
568 fInfo = new DateIntervalInfo(newItvPattern);
569 if (fInfo == nullptr) {
570 status = U_MEMORY_ALLOCATION_ERROR;
571 }
572
573 // Delete patterns that get reset by initializePattern
574 delete fDatePattern;
575 fDatePattern = nullptr;
576 delete fTimePattern;
577 fTimePattern = nullptr;
578 delete fDateTimeFormat;
579 fDateTimeFormat = nullptr;
580
581 if (fDateFormat) {
582 initializePattern(status);
583 }
584}
585
586
587
588const DateFormat*
589DateIntervalFormat::getDateFormat() const {
590 return fDateFormat;
591}
592
593
594void
595DateIntervalFormat::adoptTimeZone(TimeZone* zone)
596{
597 if (fDateFormat != nullptr) {
598 fDateFormat->adoptTimeZone(zone);
599 }
600 // The fDateFormat has the primary calendar for the DateIntervalFormat and has
601 // ownership of any adopted TimeZone; fFromCalendar and fToCalendar are internal
602 // work clones of that calendar (and should not also be given ownership of the
603 // adopted TimeZone).
604 if (fFromCalendar) {
605 fFromCalendar->setTimeZone(*zone);
606 }
607 if (fToCalendar) {
608 fToCalendar->setTimeZone(*zone);
609 }
610}
611
612void
613DateIntervalFormat::setTimeZone(const TimeZone& zone)
614{
615 if (fDateFormat != nullptr) {
616 fDateFormat->setTimeZone(zone);
617 }
618 // The fDateFormat has the primary calendar for the DateIntervalFormat;
619 // fFromCalendar and fToCalendar are internal work clones of that calendar.
620 if (fFromCalendar) {
621 fFromCalendar->setTimeZone(zone);
622 }
623 if (fToCalendar) {
624 fToCalendar->setTimeZone(zone);
625 }
626}
627
628const TimeZone&
629DateIntervalFormat::getTimeZone() const
630{
631 if (fDateFormat != nullptr) {
632 Mutex lock(&gFormatterMutex);
633 return fDateFormat->getTimeZone();
634 }
635 // If fDateFormat is nullptr (unexpected), create default timezone.
636 return *(TimeZone::createDefault());
637}
638
639void DateIntervalFormat::adoptCalendar(Calendar *calendarToAdopt) {
640 if (fDateFormat != nullptr) {
641 fDateFormat->adoptCalendar(calendarToAdopt);
642 }
643
644 // The fDateFormat has the primary calendar for the DateIntervalFormat and has
645 // ownership of any adopted Calendar; fFromCalendar and fToCalendar are internal
646 // work clones of that calendar.
647
648 delete fFromCalendar;
649 fFromCalendar = nullptr;
650
651 delete fToCalendar;
652 fToCalendar = nullptr;
653
654 const Calendar *calendar = fDateFormat->getCalendar();
655 if (calendar != nullptr) {
656 fFromCalendar = calendar->clone();
657 fToCalendar = calendar->clone();
658 }
659}
660
661void
662DateIntervalFormat::setContext(UDisplayContext value, UErrorCode& status)
663{
664 if (U_FAILURE(status))
665 return;
666 if (static_cast<UDisplayContextType>(static_cast<uint32_t>(value) >> 8) == UDISPCTX_TYPE_CAPITALIZATION) {
667 fCapitalizationContext = value;
668 } else {
669 status = U_ILLEGAL_ARGUMENT_ERROR;
670 }
671}
672
673UDisplayContext
674DateIntervalFormat::getContext(UDisplayContextType type, UErrorCode& status) const
675{
676 if (U_FAILURE(status))
677 return static_cast<UDisplayContext>(0);
678 if (type != UDISPCTX_TYPE_CAPITALIZATION) {
679 status = U_ILLEGAL_ARGUMENT_ERROR;
680 return static_cast<UDisplayContext>(0);
681 }
682 return fCapitalizationContext;
683}
684
685DateIntervalFormat::DateIntervalFormat(const Locale& locale,
686 DateIntervalInfo* dtItvInfo,
687 const UnicodeString* skeleton,
688 UErrorCode& status)
689: fInfo(nullptr),
690 fDateFormat(nullptr),
691 fFromCalendar(nullptr),
692 fToCalendar(nullptr),
693 fLocale(locale),
694 fDatePattern(nullptr),
695 fTimePattern(nullptr),
696 fDateTimeFormat(nullptr),
697 fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE)
698{
699 LocalPointer<DateIntervalInfo> info(dtItvInfo, status);
700 LocalPointer<SimpleDateFormat> dtfmt(static_cast<SimpleDateFormat *>(
701 DateFormat::createInstanceForSkeleton(*skeleton, locale, status)), status);
702 if (U_FAILURE(status)) {
703 return;
704 }
705
706 if ( skeleton ) {
707 fSkeleton = *skeleton;
708 }
709 fInfo = info.orphan();
710 fDateFormat = dtfmt.orphan();
711 if ( fDateFormat->getCalendar() ) {
712 fFromCalendar = fDateFormat->getCalendar()->clone();
713 fToCalendar = fDateFormat->getCalendar()->clone();
714 }
715 initializePattern(status);
716}
717
718DateIntervalFormat* U_EXPORT2
719DateIntervalFormat::create(const Locale& locale,
720 DateIntervalInfo* dtitvinf,
721 const UnicodeString* skeleton,
722 UErrorCode& status) {
723 DateIntervalFormat* f = new DateIntervalFormat(locale, dtitvinf,
724 skeleton, status);
725 if ( f == nullptr ) {
726 status = U_MEMORY_ALLOCATION_ERROR;
727 delete dtitvinf;
728 } else if ( U_FAILURE(status) ) {
729 // safe to delete f, although nothing actually is saved
730 delete f;
731 f = nullptr;
732 }
733 return f;
734}
735
736
737
738/**
739 * Initialize interval patterns locale to this formatter
740 *
741 * This code is a bit complicated since
742 * 1. the interval patterns saved in resource bundle files are interval
743 * patterns based on date or time only.
744 * It does not have interval patterns based on both date and time.
745 * Interval patterns on both date and time are algorithm generated.
746 *
747 * For example, it has interval patterns on skeleton "dMy" and "hm",
748 * but it does not have interval patterns on skeleton "dMyhm".
749 *
750 * The rule to genearte interval patterns for both date and time skeleton are
751 * 1) when the year, month, or day differs, concatenate the two original
752 * expressions with a separator between,
753 * For example, interval pattern from "Jan 10, 2007 10:10 am"
754 * to "Jan 11, 2007 10:10am" is
755 * "Jan 10, 2007 10:10 am - Jan 11, 2007 10:10am"
756 *
757 * 2) otherwise, present the date followed by the range expression
758 * for the time.
759 * For example, interval pattern from "Jan 10, 2007 10:10 am"
760 * to "Jan 10, 2007 11:10am" is
761 * "Jan 10, 2007 10:10 am - 11:10am"
762 *
763 * 2. even a pattern does not request a certion calendar field,
764 * the interval pattern needs to include such field if such fields are
765 * different between 2 dates.
766 * For example, a pattern/skeleton is "hm", but the interval pattern
767 * includes year, month, and date when year, month, and date differs.
768 *
769 * @param status output param set to success/failure code on exit
770 * @stable ICU 4.0
771 */
772void
773DateIntervalFormat::initializePattern(UErrorCode& status) {
774 if ( U_FAILURE(status) ) {
775 return;
776 }
777 const Locale& locale = fDateFormat->getSmpFmtLocale();
778 if ( fSkeleton.isEmpty() ) {
779 UnicodeString fullPattern;
780 fDateFormat->toPattern(fullPattern);
781#ifdef DTITVFMT_DEBUG
782 char result[1000];
783 char result_1[1000];
784 char mesg[2000];
785 fSkeleton.extract(0, fSkeleton.length(), result, "UTF-8");
786 snprintf(mesg, sizeof(mesg), "in getBestSkeleton: fSkeleton: %s; \n", result);
787 PRINTMESG(mesg)
788#endif
789 // fSkeleton is already set by createDateIntervalInstance()
790 // or by createInstance(UnicodeString skeleton, .... )
791 fSkeleton = DateTimePatternGenerator::staticGetSkeleton(
792 fullPattern, status);
793 if ( U_FAILURE(status) ) {
794 return;
795 }
796 }
797
798 // initialize the fIntervalPattern ordering
799 int8_t i;
800 for ( i = 0; i < DateIntervalInfo::kIPI_MAX_INDEX; ++i ) {
801 fIntervalPatterns[i].laterDateFirst = fInfo->getDefaultOrder();
802 }
803
804 /* Check whether the skeleton is a combination of date and time.
805 * For the complication reason 1 explained above.
806 */
807 UnicodeString dateSkeleton;
808 UnicodeString timeSkeleton;
809 UnicodeString normalizedTimeSkeleton;
810 UnicodeString normalizedDateSkeleton;
811
812
813 /* the difference between time skeleton and normalizedTimeSkeleton are:
814 * 1. (Formerly, normalized time skeleton folded 'H' to 'h'; no longer true)
815 * 2. (Formerly, 'a' was omitted in normalized time skeleton; this is now handled elsewhere)
816 * 3. there is only one appearance for 'h' or 'H', 'm','v', 'z' in normalized
817 * time skeleton
818 *
819 * The difference between date skeleton and normalizedDateSkeleton are:
820 * 1. both 'y' and 'd' appear only once in normalizeDateSkeleton
821 * 2. 'E' and 'EE' are normalized into 'EEE'
822 * 3. 'MM' is normalized into 'M'
823 */
824 UnicodeString convertedSkeleton = normalizeHourMetacharacters(fSkeleton);
825 getDateTimeSkeleton(convertedSkeleton, dateSkeleton, normalizedDateSkeleton,
826 timeSkeleton, normalizedTimeSkeleton);
827
828#ifdef DTITVFMT_DEBUG
829 char result[1000];
830 char result_1[1000];
831 char mesg[2000];
832 fSkeleton.extract(0, fSkeleton.length(), result, "UTF-8");
833 snprintf(mesg, sizeof(mesg), "in getBestSkeleton: fSkeleton: %s; \n", result);
834 PRINTMESG(mesg)
835#endif
836
837 // move this up here since we need it for fallbacks
838 if ( timeSkeleton.length() > 0 && dateSkeleton.length() > 0 ) {
839 // Need the Date/Time pattern for concatenation of the date
840 // with the time interval.
841 // The date/time pattern ( such as {0} {1} ) is saved in
842 // calendar, that is why need to get the CalendarData here.
843 LocalUResourceBundlePointer dateTimePatternsRes(ures_openures_open_77(nullptr, locale.getBaseName(), &status));
844 ures_getByKeyures_getByKey_77(dateTimePatternsRes.getAlias(), gCalendarTag,
845 dateTimePatternsRes.getAlias(), &status);
846 ures_getByKeyWithFallbackures_getByKeyWithFallback_77(dateTimePatternsRes.getAlias(), gGregorianTag,
847 dateTimePatternsRes.getAlias(), &status);
848 ures_getByKeyWithFallbackures_getByKeyWithFallback_77(dateTimePatternsRes.getAlias(), gDateTimePatternsTag,
849 dateTimePatternsRes.getAlias(), &status);
850
851 int32_t dateTimeFormatLength;
852 const char16_t* dateTimeFormat = ures_getStringByIndexures_getStringByIndex_77(
853 dateTimePatternsRes.getAlias(),
854 static_cast<int32_t>(DateFormat::kDateTime),
855 &dateTimeFormatLength, &status);
856 if ( U_SUCCESS(status) && dateTimeFormatLength >= 3 ) {
857 fDateTimeFormat = new UnicodeString(dateTimeFormat, dateTimeFormatLength);
858 if (fDateTimeFormat == nullptr) {
859 status = U_MEMORY_ALLOCATION_ERROR;
860 return;
861 }
862 }
863 }
864
865 UBool found = setSeparateDateTimePtn(normalizedDateSkeleton,
866 normalizedTimeSkeleton);
867
868 // for skeletons with seconds, found is false and we enter this block
869 if ( found == false ) {
870 // use fallback
871 // TODO: if user asks "m"(minute), but "d"(day) differ
872 if ( timeSkeleton.length() != 0 ) {
873 if ( dateSkeleton.length() == 0 ) {
874 // prefix with yMd
875 timeSkeleton.insert(0, gDateFormatSkeleton[DateFormat::kShort], -1);
876 UnicodeString pattern = DateFormat::getBestPattern(
877 locale, timeSkeleton, status);
878 if ( U_FAILURE(status) ) {
879 return;
880 }
881 // for fall back interval patterns,
882 // the first part of the pattern is empty,
883 // the second part of the pattern is the full-pattern
884 // should be used in fall-back.
885 setPatternInfo(UCAL_DATE, nullptr, &pattern, fInfo->getDefaultOrder());
886 setPatternInfo(UCAL_MONTH, nullptr, &pattern, fInfo->getDefaultOrder());
887 setPatternInfo(UCAL_YEAR, nullptr, &pattern, fInfo->getDefaultOrder());
888
889 timeSkeleton.insert(0, CAP_G((char16_t)0x0047));
890 pattern = DateFormat::getBestPattern(
891 locale, timeSkeleton, status);
892 if ( U_FAILURE(status) ) {
893 return;
894 }
895 setPatternInfo(UCAL_ERA, nullptr, &pattern, fInfo->getDefaultOrder());
896 } else {
897 // TODO: fall back
898 }
899 } else {
900 // TODO: fall back
901 }
902 return;
903 } // end of skeleton not found
904 // interval patterns for skeleton are found in resource
905 if ( timeSkeleton.length() == 0 ) {
906 // done
907 } else if ( dateSkeleton.length() == 0 ) {
908 // prefix with yMd
909 timeSkeleton.insert(0, gDateFormatSkeleton[DateFormat::kShort], -1);
910 UnicodeString pattern = DateFormat::getBestPattern(
911 locale, timeSkeleton, status);
912 if ( U_FAILURE(status) ) {
913 return;
914 }
915 // for fall back interval patterns,
916 // the first part of the pattern is empty,
917 // the second part of the pattern is the full-pattern
918 // should be used in fall-back.
919 setPatternInfo(UCAL_DATE, nullptr, &pattern, fInfo->getDefaultOrder());
920 setPatternInfo(UCAL_MONTH, nullptr, &pattern, fInfo->getDefaultOrder());
921 setPatternInfo(UCAL_YEAR, nullptr, &pattern, fInfo->getDefaultOrder());
922
923 timeSkeleton.insert(0, CAP_G((char16_t)0x0047));
924 pattern = DateFormat::getBestPattern(
925 locale, timeSkeleton, status);
926 if ( U_FAILURE(status) ) {
927 return;
928 }
929 setPatternInfo(UCAL_ERA, nullptr, &pattern, fInfo->getDefaultOrder());
930 } else {
931 /* if both present,
932 * 1) when the era, year, month, or day differs,
933 * concatenate the two original expressions with a separator between,
934 * 2) otherwise, present the date followed by the
935 * range expression for the time.
936 */
937 /*
938 * 1) when the era, year, month, or day differs,
939 * concatenate the two original expressions with a separator between,
940 */
941 // if field exists, use fall back
942 UnicodeString skeleton = fSkeleton;
943 if ( !fieldExistsInSkeleton(UCAL_DATE, dateSkeleton) ) {
944 // prefix skeleton with 'd'
945 skeleton.insert(0, LOW_D((char16_t)0x0064));
946 setFallbackPattern(UCAL_DATE, skeleton, status);
947 }
948 if ( !fieldExistsInSkeleton(UCAL_MONTH, dateSkeleton) ) {
949 // then prefix skeleton with 'M'
950 skeleton.insert(0, CAP_M((char16_t)0x004D));
951 setFallbackPattern(UCAL_MONTH, skeleton, status);
952 }
953 if ( !fieldExistsInSkeleton(UCAL_YEAR, dateSkeleton) ) {
954 // then prefix skeleton with 'y'
955 skeleton.insert(0, LOW_Y((char16_t)0x0079));
956 setFallbackPattern(UCAL_YEAR, skeleton, status);
957 }
958 if ( !fieldExistsInSkeleton(UCAL_ERA, dateSkeleton) ) {
959 // then prefix skeleton with 'G'
960 skeleton.insert(0, CAP_G((char16_t)0x0047));
961 setFallbackPattern(UCAL_ERA, skeleton, status);
962 }
963
964 /*
965 * 2) otherwise, present the date followed by the
966 * range expression for the time.
967 */
968
969 if ( fDateTimeFormat == nullptr ) {
970 // earlier failure getting dateTimeFormat
971 return;
972 }
973
974 UnicodeString datePattern = DateFormat::getBestPattern(
975 locale, dateSkeleton, status);
976
977 concatSingleDate2TimeInterval(*fDateTimeFormat, datePattern, UCAL_AM_PM, status);
978 concatSingleDate2TimeInterval(*fDateTimeFormat, datePattern, UCAL_HOUR, status);
979 concatSingleDate2TimeInterval(*fDateTimeFormat, datePattern, UCAL_MINUTE, status);
980 }
981}
982
983
984
985UnicodeString
986DateIntervalFormat::normalizeHourMetacharacters(const UnicodeString& skeleton) const {
987 UnicodeString result = skeleton;
988
989 char16_t hourMetachar = u'\0';
990 char16_t dayPeriodChar = u'\0';
991 int32_t hourFieldStart = 0;
992 int32_t hourFieldLength = 0;
993 int32_t dayPeriodStart = 0;
994 int32_t dayPeriodLength = 0;
995 for (int32_t i = 0; i < result.length(); i++) {
996 char16_t c = result[i];
997 if (c == LOW_J((char16_t)0x006a) || c == CAP_J((char16_t)0x004A) || c == CAP_C((char16_t)0x0043) || c == LOW_H((char16_t)0x0068) || c == CAP_H((char16_t)0x0048) || c == LOW_K((char16_t)0x006B) || c == CAP_K((char16_t)0x004B)) {
998 if (hourMetachar == u'\0') {
999 hourMetachar = c;
1000 hourFieldStart = i;
1001 }
1002 ++hourFieldLength;
1003 } else if (c == LOW_A((char16_t)0x0061) || c == LOW_B((char16_t)0x0062) || c == CAP_B((char16_t)0x0042)) {
1004 if (dayPeriodChar == u'\0') {
1005 dayPeriodChar = c;
1006 dayPeriodStart = i;
1007 }
1008 ++dayPeriodLength;
1009 } else {
1010 if (hourMetachar != u'\0' && dayPeriodChar != u'\0') {
1011 break;
1012 }
1013 }
1014 }
1015
1016 if (hourMetachar != u'\0') {
1017 UErrorCode err = U_ZERO_ERROR;
1018 char16_t hourChar = CAP_H((char16_t)0x0048);
1019 UnicodeString convertedPattern = DateFormat::getBestPattern(fLocale, UnicodeString(hourMetachar), err);
1020
1021 if (U_SUCCESS(err)) {
1022 // strip literal text from the pattern (so literal characters don't get mistaken for pattern
1023 // characters-- such as the 'h' in 'Uhr' in Germam)
1024 int32_t firstQuotePos;
1025 while ((firstQuotePos = convertedPattern.indexOf(u'\'')) != -1) {
1026 int32_t secondQuotePos = convertedPattern.indexOf(u'\'', firstQuotePos + 1);
1027 if (secondQuotePos == -1) {
1028 secondQuotePos = firstQuotePos;
1029 }
1030 convertedPattern.replace(firstQuotePos, (secondQuotePos - firstQuotePos) + 1, UnicodeString());
1031 }
1032
1033 if (convertedPattern.indexOf(LOW_H((char16_t)0x0068)) != -1) {
1034 hourChar = LOW_H((char16_t)0x0068);
1035 } else if (convertedPattern.indexOf(CAP_K((char16_t)0x004B)) != -1) {
1036 hourChar = CAP_K((char16_t)0x004B);
1037 } else if (convertedPattern.indexOf(LOW_K((char16_t)0x006B)) != -1) {
1038 hourChar = LOW_K((char16_t)0x006B);
1039 }
1040
1041 if (convertedPattern.indexOf(LOW_B((char16_t)0x0062)) != -1) {
1042 dayPeriodChar = LOW_B((char16_t)0x0062);
1043 } else if (convertedPattern.indexOf(CAP_B((char16_t)0x0042)) != -1) {
1044 dayPeriodChar = CAP_B((char16_t)0x0042);
1045 } else if (dayPeriodChar == u'\0') {
1046 dayPeriodChar = LOW_A((char16_t)0x0061);
1047 }
1048 }
1049
1050 UnicodeString hourAndDayPeriod(hourChar);
1051 if (hourChar != CAP_H((char16_t)0x0048) && hourChar != LOW_K((char16_t)0x006B)) {
1052 int32_t newDayPeriodLength = 0;
1053 if (dayPeriodLength >= 5 || hourFieldLength >= 5) {
1054 newDayPeriodLength = 5;
1055 } else if (dayPeriodLength >= 3 || hourFieldLength >= 3) {
1056 newDayPeriodLength = 3;
1057 } else {
1058 newDayPeriodLength = 1;
1059 }
1060 for (int32_t i = 0; i < newDayPeriodLength; i++) {
1061 hourAndDayPeriod.append(dayPeriodChar);
1062 }
1063 }
1064 result.replace(hourFieldStart, hourFieldLength, hourAndDayPeriod);
1065 if (dayPeriodStart > hourFieldStart) {
1066 // before deleting the original day period field, adjust its position in case
1067 // we just changed the size of the hour field (and new day period field)
1068 dayPeriodStart += hourAndDayPeriod.length() - hourFieldLength;
1069 }
1070 result.remove(dayPeriodStart, dayPeriodLength);
1071 }
1072 return result;
1073}
1074
1075
1076void U_EXPORT2
1077DateIntervalFormat::getDateTimeSkeleton(const UnicodeString& skeleton,
1078 UnicodeString& dateSkeleton,
1079 UnicodeString& normalizedDateSkeleton,
1080 UnicodeString& timeSkeleton,
1081 UnicodeString& normalizedTimeSkeleton) {
1082 // dateSkeleton follows the sequence of y*M*E*d*
1083 // timeSkeleton follows the sequence of hm*[v|z]?
1084 int32_t ECount = 0;
1085 int32_t dCount = 0;
1086 int32_t MCount = 0;
1087 int32_t yCount = 0;
1088 int32_t mCount = 0;
1089 int32_t vCount = 0;
1090 int32_t zCount = 0;
1091 int32_t OCount = 0;
1092 char16_t hourChar = u'\0';
1093 int32_t i;
1094
1095 for (i = 0; i < skeleton.length(); ++i) {
1096 char16_t ch = skeleton[i];
1097 switch ( ch ) {
1098 case CAP_E((char16_t)0x0045):
1099 dateSkeleton.append(ch);
1100 ++ECount;
1101 break;
1102 case LOW_D((char16_t)0x0064):
1103 dateSkeleton.append(ch);
1104 ++dCount;
1105 break;
1106 case CAP_M((char16_t)0x004D):
1107 dateSkeleton.append(ch);
1108 ++MCount;
1109 break;
1110 case LOW_Y((char16_t)0x0079):
1111 dateSkeleton.append(ch);
1112 ++yCount;
1113 break;
1114 case CAP_G((char16_t)0x0047):
1115 case CAP_Y((char16_t)0x0059):
1116 case LOW_U((char16_t)0x0075):
1117 case CAP_Q((char16_t)0x0051):
1118 case LOW_Q((char16_t)0x0071):
1119 case CAP_L((char16_t)0x004C):
1120 case LOW_L((char16_t)0x006C):
1121 case CAP_W((char16_t)0x0057):
1122 case LOW_W((char16_t)0x0077):
1123 case CAP_D((char16_t)0x0044):
1124 case CAP_F((char16_t)0x0046):
1125 case LOW_G((char16_t)0x0067):
1126 case LOW_E((char16_t)0x0065):
1127 case LOW_C((char16_t)0x0063):
1128 case CAP_U((char16_t)0x0055):
1129 case LOW_R((char16_t)0x0072):
1130 normalizedDateSkeleton.append(ch);
1131 dateSkeleton.append(ch);
1132 break;
1133 case LOW_H((char16_t)0x0068):
1134 case CAP_H((char16_t)0x0048):
1135 case LOW_K((char16_t)0x006B):
1136 case CAP_K((char16_t)0x004B):
1137 timeSkeleton.append(ch);
1138 if (hourChar == u'\0') {
1139 hourChar = ch;
1140 }
1141 break;
1142 case LOW_M((char16_t)0x006D):
1143 timeSkeleton.append(ch);
1144 ++mCount;
1145 break;
1146 case LOW_Z((char16_t)0x007A):
1147 ++zCount;
1148 timeSkeleton.append(ch);
1149 break;
1150 case LOW_V((char16_t)0x0076):
1151 ++vCount;
1152 timeSkeleton.append(ch);
1153 break;
1154 case CAP_O((char16_t)0x004F):
1155 ++OCount;
1156 timeSkeleton.append(ch);
1157 break;
1158 case LOW_A((char16_t)0x0061):
1159 case CAP_V((char16_t)0x0056):
1160 case CAP_Z((char16_t)0x005A):
1161 case LOW_J((char16_t)0x006a):
1162 case LOW_S((char16_t)0x0073):
1163 case CAP_S((char16_t)0x0053):
1164 case CAP_A((char16_t)0x0041):
1165 case LOW_B((char16_t)0x0062):
1166 case CAP_B((char16_t)0x0042):
1167 timeSkeleton.append(ch);
1168 normalizedTimeSkeleton.append(ch);
1169 break;
1170 }
1171 }
1172
1173 /* generate normalized form for date*/
1174 if ( yCount != 0 ) {
1175 for (i = 0; i < yCount; ++i) {
1176 normalizedDateSkeleton.append(LOW_Y((char16_t)0x0079));
1177 }
1178 }
1179 if ( MCount != 0 ) {
1180 if ( MCount < 3 ) {
1181 normalizedDateSkeleton.append(CAP_M((char16_t)0x004D));
1182 } else {
1183 for ( int32_t j = 0; j < MCount && j < MAX_M_COUNT5; ++j) {
1184 normalizedDateSkeleton.append(CAP_M((char16_t)0x004D));
1185 }
1186 }
1187 }
1188 if ( ECount != 0 ) {
1189 if ( ECount <= 3 ) {
1190 normalizedDateSkeleton.append(CAP_E((char16_t)0x0045));
1191 } else {
1192 for ( int32_t j = 0; j < ECount && j < MAX_E_COUNT5; ++j ) {
1193 normalizedDateSkeleton.append(CAP_E((char16_t)0x0045));
1194 }
1195 }
1196 }
1197 if ( dCount != 0 ) {
1198 normalizedDateSkeleton.append(LOW_D((char16_t)0x0064));
1199 }
1200
1201 /* generate normalized form for time */
1202 if ( hourChar != u'\0' ) {
1203 normalizedTimeSkeleton.append(hourChar);
1204 }
1205 if ( mCount != 0 ) {
1206 normalizedTimeSkeleton.append(LOW_M((char16_t)0x006D));
1207 }
1208 if ( zCount != 0 ) {
1209 if ( zCount <= 3 ) {
1210 normalizedTimeSkeleton.append(LOW_Z((char16_t)0x007A));
1211 } else {
1212 for ( int32_t j = 0; j < zCount && j < MAX_z_COUNT4; ++j ) {
1213 normalizedTimeSkeleton.append(LOW_Z((char16_t)0x007A));
1214 }
1215 }
1216 }
1217 if ( vCount != 0 ) {
1218 if ( vCount <= 3 ) {
1219 normalizedTimeSkeleton.append(LOW_V((char16_t)0x0076));
1220 } else {
1221 for ( int32_t j = 0; j < vCount && j < MAX_v_COUNT4; ++j ) {
1222 normalizedTimeSkeleton.append(LOW_V((char16_t)0x0076));
1223 }
1224 }
1225 }
1226 if ( OCount != 0 ) {
1227 if ( OCount <= 3 ) {
1228 normalizedTimeSkeleton.append(CAP_O((char16_t)0x004F));
1229 } else {
1230 for ( int32_t j = 0; j < OCount && j < MAX_O_COUNT4; ++j ) {
1231 normalizedTimeSkeleton.append(CAP_O((char16_t)0x004F));
1232 }
1233 }
1234 }
1235}
1236
1237
1238/**
1239 * Generate date or time interval pattern from resource,
1240 * and set them into the interval pattern locale to this formatter.
1241 *
1242 * It needs to handle the following:
1243 * 1. need to adjust field width.
1244 * For example, the interval patterns saved in DateIntervalInfo
1245 * includes "dMMMy", but not "dMMMMy".
1246 * Need to get interval patterns for dMMMMy from dMMMy.
1247 * Another example, the interval patterns saved in DateIntervalInfo
1248 * includes "hmv", but not "hmz".
1249 * Need to get interval patterns for "hmz' from 'hmv'
1250 *
1251 * 2. there might be no pattern for 'y' differ for skeleton "Md",
1252 * in order to get interval patterns for 'y' differ,
1253 * need to look for it from skeleton 'yMd'
1254 *
1255 * @param dateSkeleton normalized date skeleton
1256 * @param timeSkeleton normalized time skeleton
1257 * @return whether the resource is found for the skeleton.
1258 * true if interval pattern found for the skeleton,
1259 * false otherwise.
1260 * @stable ICU 4.0
1261 */
1262UBool
1263DateIntervalFormat::setSeparateDateTimePtn(
1264 const UnicodeString& dateSkeleton,
1265 const UnicodeString& timeSkeleton) {
1266 const UnicodeString* skeleton;
1267 // if both date and time skeleton present,
1268 // the final interval pattern might include time interval patterns
1269 // ( when, am_pm, hour, minute differ ),
1270 // but not date interval patterns ( when year, month, day differ ).
1271 // For year/month/day differ, it falls back to fall-back pattern.
1272 if ( timeSkeleton.length() != 0 ) {
1273 skeleton = &timeSkeleton;
1274 } else {
1275 skeleton = &dateSkeleton;
1276 }
1277
1278 /* interval patterns for skeleton "dMMMy" (but not "dMMMMy")
1279 * are defined in resource,
1280 * interval patterns for skeleton "dMMMMy" are calculated by
1281 * 1. get the best match skeleton for "dMMMMy", which is "dMMMy"
1282 * 2. get the interval patterns for "dMMMy",
1283 * 3. extend "MMM" to "MMMM" in above interval patterns for "dMMMMy"
1284 * getBestSkeleton() is step 1.
1285 */
1286 // best skeleton, and the difference information
1287 int8_t differenceInfo = 0;
1288 const UnicodeString* bestSkeleton = fInfo->getBestSkeleton(*skeleton,
1289 differenceInfo);
1290 /* best skeleton could be nullptr.
1291 For example: in "ca" resource file,
1292 interval format is defined as following
1293 intervalFormats{
1294 fallback{"{0} - {1}"}
1295 }
1296 there is no skeletons/interval patterns defined,
1297 and the best skeleton match could be nullptr
1298 */
1299 if ( bestSkeleton == nullptr ) {
1300 return false;
1301 }
1302
1303 // Set patterns for fallback use, need to do this
1304 // before returning if differenceInfo == -1
1305 UErrorCode status;
1306 if ( dateSkeleton.length() != 0) {
1307 status = U_ZERO_ERROR;
1308 fDatePattern = new UnicodeString(DateFormat::getBestPattern(
1309 fLocale, dateSkeleton, status));
1310 // no way to report OOM. :(
1311 }
1312 if ( timeSkeleton.length() != 0) {
1313 status = U_ZERO_ERROR;
1314 fTimePattern = new UnicodeString(DateFormat::getBestPattern(
1315 fLocale, timeSkeleton, status));
1316 // no way to report OOM. :(
1317 }
1318
1319 // difference:
1320 // 0 means the best matched skeleton is the same as input skeleton
1321 // 1 means the fields are the same, but field width are different
1322 // 2 means the only difference between fields are v/z,
1323 // -1 means there are other fields difference
1324 // (this will happen, for instance, if the supplied skeleton has seconds,
1325 // but no skeletons in the intervalFormats data do)
1326 if ( differenceInfo == -1 ) {
1327 // skeleton has different fields, not only v/z difference
1328 return false;
1329 }
1330
1331 if ( timeSkeleton.length() == 0 ) {
1332 UnicodeString extendedSkeleton;
1333 UnicodeString extendedBestSkeleton;
1334 // only has date skeleton
1335 setIntervalPattern(UCAL_DATE, skeleton, bestSkeleton, differenceInfo,
1336 &extendedSkeleton, &extendedBestSkeleton);
1337
1338 UBool extended = setIntervalPattern(UCAL_MONTH, skeleton, bestSkeleton,
1339 differenceInfo,
1340 &extendedSkeleton, &extendedBestSkeleton);
1341
1342 if ( extended ) {
1343 bestSkeleton = &extendedBestSkeleton;
1344 skeleton = &extendedSkeleton;
1345 }
1346 setIntervalPattern(UCAL_YEAR, skeleton, bestSkeleton, differenceInfo,
1347 &extendedSkeleton, &extendedBestSkeleton);
1348 setIntervalPattern(UCAL_ERA, skeleton, bestSkeleton, differenceInfo,
1349 &extendedSkeleton, &extendedBestSkeleton);
1350 } else {
1351 setIntervalPattern(UCAL_MINUTE, skeleton, bestSkeleton, differenceInfo);
1352 setIntervalPattern(UCAL_HOUR, skeleton, bestSkeleton, differenceInfo);
1353 setIntervalPattern(UCAL_AM_PM, skeleton, bestSkeleton, differenceInfo);
1354 }
1355 return true;
1356}
1357
1358
1359
1360void
1361DateIntervalFormat::setFallbackPattern(UCalendarDateFields field,
1362 const UnicodeString& skeleton,
1363 UErrorCode& status) {
1364 if ( U_FAILURE(status) ) {
1365 return;
1366 }
1367 UnicodeString pattern = DateFormat::getBestPattern(
1368 fLocale, skeleton, status);
1369 if ( U_FAILURE(status) ) {
1370 return;
1371 }
1372 setPatternInfo(field, nullptr, &pattern, fInfo->getDefaultOrder());
1373}
1374
1375
1376
1377
1378void
1379DateIntervalFormat::setPatternInfo(UCalendarDateFields field,
1380 const UnicodeString* firstPart,
1381 const UnicodeString* secondPart,
1382 UBool laterDateFirst) {
1383 // for fall back interval patterns,
1384 // the first part of the pattern is empty,
1385 // the second part of the pattern is the full-pattern
1386 // should be used in fall-back.
1387 UErrorCode status = U_ZERO_ERROR;
1388 // following should not set any wrong status.
1389 int32_t itvPtnIndex = DateIntervalInfo::calendarFieldToIntervalIndex(field,
1390 status);
1391 if ( U_FAILURE(status) ) {
1392 return;
1393 }
1394 PatternInfo& ptn = fIntervalPatterns[itvPtnIndex];
1395 if ( firstPart ) {
1396 ptn.firstPart = *firstPart;
1397 }
1398 if ( secondPart ) {
1399 ptn.secondPart = *secondPart;
1400 }
1401 ptn.laterDateFirst = laterDateFirst;
1402}
1403
1404void
1405DateIntervalFormat::setIntervalPattern(UCalendarDateFields field,
1406 const UnicodeString& intervalPattern) {
1407 UBool order = fInfo->getDefaultOrder();
1408 setIntervalPattern(field, intervalPattern, order);
1409}
1410
1411
1412void
1413DateIntervalFormat::setIntervalPattern(UCalendarDateFields field,
1414 const UnicodeString& intervalPattern,
1415 UBool laterDateFirst) {
1416 const UnicodeString* pattern = &intervalPattern;
1417 UBool order = laterDateFirst;
1418 // check for "latestFirst:" or "earliestFirst:" prefix
1419 int8_t prefixLength = UPRV_LENGTHOF(gLaterFirstPrefix)(int32_t)(sizeof(gLaterFirstPrefix)/sizeof((gLaterFirstPrefix
)[0]));
1420 int8_t earliestFirstLength = UPRV_LENGTHOF(gEarlierFirstPrefix)(int32_t)(sizeof(gEarlierFirstPrefix)/sizeof((gEarlierFirstPrefix
)[0]));
1421 UnicodeString realPattern;
1422 if ( intervalPattern.startsWith(gLaterFirstPrefix, prefixLength) ) {
1423 order = true;
1424 intervalPattern.extract(prefixLength,
1425 intervalPattern.length() - prefixLength,
1426 realPattern);
1427 pattern = &realPattern;
1428 } else if ( intervalPattern.startsWith(gEarlierFirstPrefix,
1429 earliestFirstLength) ) {
1430 order = false;
1431 intervalPattern.extract(earliestFirstLength,
1432 intervalPattern.length() - earliestFirstLength,
1433 realPattern);
1434 pattern = &realPattern;
1435 }
1436
1437 int32_t splitPoint = splitPatternInto2Part(*pattern);
1438
1439 UnicodeString firstPart;
1440 UnicodeString secondPart;
1441 pattern->extract(0, splitPoint, firstPart);
1442 if ( splitPoint < pattern->length() ) {
1443 pattern->extract(splitPoint, pattern->length()-splitPoint, secondPart);
1444 }
1445 setPatternInfo(field, &firstPart, &secondPart, order);
1446}
1447
1448
1449
1450
1451/**
1452 * Generate interval pattern from existing resource
1453 *
1454 * It not only save the interval patterns,
1455 * but also return the extended skeleton and its best match skeleton.
1456 *
1457 * @param field largest different calendar field
1458 * @param skeleton skeleton
1459 * @param bestSkeleton the best match skeleton which has interval pattern
1460 * defined in resource
1461 * @param differenceInfo the difference between skeleton and best skeleton
1462 * 0 means the best matched skeleton is the same as input skeleton
1463 * 1 means the fields are the same, but field width are different
1464 * 2 means the only difference between fields are v/z,
1465 * -1 means there are other fields difference
1466 *
1467 * @param extendedSkeleton extended skeleton
1468 * @param extendedBestSkeleton extended best match skeleton
1469 * @return whether the interval pattern is found
1470 * through extending skeleton or not.
1471 * true if interval pattern is found by
1472 * extending skeleton, false otherwise.
1473 * @stable ICU 4.0
1474 */
1475UBool
1476DateIntervalFormat::setIntervalPattern(UCalendarDateFields field,
1477 const UnicodeString* skeleton,
1478 const UnicodeString* bestSkeleton,
1479 int8_t differenceInfo,
1480 UnicodeString* extendedSkeleton,
1481 UnicodeString* extendedBestSkeleton) {
1482 UErrorCode status = U_ZERO_ERROR;
1483 // following getIntervalPattern() should not generate error status
1484 UnicodeString pattern;
1485 fInfo->getIntervalPattern(*bestSkeleton, field, pattern, status);
1486 if ( pattern.isEmpty() ) {
1487 // single date
1488 if ( SimpleDateFormat::isFieldUnitIgnored(*bestSkeleton, field) ) {
1489 // do nothing, format will handle it
1490 return false;
1491 }
1492
1493 // for 24 hour system, interval patterns in resource file
1494 // might not include pattern when am_pm differ,
1495 // which should be the same as hour differ.
1496 // add it here for simplicity
1497 if ( field == UCAL_AM_PM ) {
1498 fInfo->getIntervalPattern(*bestSkeleton, UCAL_HOUR, pattern,status);
1499 if ( !pattern.isEmpty() ) {
1500 UBool suppressDayPeriodField = fSkeleton.indexOf(CAP_J((char16_t)0x004A)) != -1;
1501 UnicodeString adjustIntervalPattern;
1502 adjustFieldWidth(*skeleton, *bestSkeleton, pattern, differenceInfo,
1503 suppressDayPeriodField, adjustIntervalPattern);
1504 setIntervalPattern(field, adjustIntervalPattern);
1505 }
1506 return false;
1507 }
1508 // else, looking for pattern when 'y' differ for 'dMMMM' skeleton,
1509 // first, get best match pattern "MMMd",
1510 // since there is no pattern for 'y' differs for skeleton 'MMMd',
1511 // need to look for it from skeleton 'yMMMd',
1512 // if found, adjust field width in interval pattern from
1513 // "MMM" to "MMMM".
1514 char16_t fieldLetter = fgCalendarFieldToPatternLetter[field];
1515 if ( extendedSkeleton ) {
1516 *extendedSkeleton = *skeleton;
1517 *extendedBestSkeleton = *bestSkeleton;
1518 extendedSkeleton->insert(0, fieldLetter);
1519 extendedBestSkeleton->insert(0, fieldLetter);
1520 // for example, looking for patterns when 'y' differ for
1521 // skeleton "MMMM".
1522 fInfo->getIntervalPattern(*extendedBestSkeleton,field,pattern,status);
1523 if ( pattern.isEmpty() && differenceInfo == 0 ) {
1524 // if there is no skeleton "yMMMM" defined,
1525 // look for the best match skeleton, for example: "yMMM"
1526 const UnicodeString* tmpBest = fInfo->getBestSkeleton(
1527 *extendedBestSkeleton, differenceInfo);
1528 if (tmpBest != nullptr && differenceInfo != -1) {
1529 fInfo->getIntervalPattern(*tmpBest, field, pattern, status);
1530 bestSkeleton = tmpBest;
1531 }
1532 }
1533 }
1534 }
1535 if ( !pattern.isEmpty() ) {
1536 UBool suppressDayPeriodField = fSkeleton.indexOf(CAP_J((char16_t)0x004A)) != -1;
1537 if ( differenceInfo != 0 || suppressDayPeriodField) {
1538 UnicodeString adjustIntervalPattern;
1539 adjustFieldWidth(*skeleton, *bestSkeleton, pattern, differenceInfo,
1540 suppressDayPeriodField, adjustIntervalPattern);
1541 setIntervalPattern(field, adjustIntervalPattern);
1542 } else {
1543 setIntervalPattern(field, pattern);
1544 }
1545 if ( extendedSkeleton && !extendedSkeleton->isEmpty() ) {
1546 return true;
1547 }
1548 }
1549 return false;
1550}
1551
1552
1553
1554int32_t U_EXPORT2
1555DateIntervalFormat::splitPatternInto2Part(const UnicodeString& intervalPattern) {
1556 UBool inQuote = false;
1557 char16_t prevCh = 0;
1558 int32_t count = 0;
1559
1560 /* repeatedPattern used to record whether a pattern has already seen.
1561 It is a pattern applies to first calendar if it is first time seen,
1562 otherwise, it is a pattern applies to the second calendar
1563 */
1564 UBool patternRepeated[] =
1565 {
1566 // A B C D E F G H I J K L M N O
1567 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1568 // P Q R S T U V W X Y Z
1569 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1570 // a b c d e f g h i j k l m n o
1571 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1572 // p q r s t u v w x y z
1573 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
1574 };
1575
1576 int8_t PATTERN_CHAR_BASE = 0x41;
1577
1578 /* loop through the pattern string character by character looking for
1579 * the first repeated pattern letter, which breaks the interval pattern
1580 * into 2 parts.
1581 */
1582 int32_t i;
1583 UBool foundRepetition = false;
1584 for (i = 0; i < intervalPattern.length(); ++i) {
1585 char16_t ch = intervalPattern.charAt(i);
1586
1587 if (ch != prevCh && count > 0) {
1588 // check the repeativeness of pattern letter
1589 UBool repeated = patternRepeated[prevCh - PATTERN_CHAR_BASE];
1590 if ( repeated == false ) {
1591 patternRepeated[prevCh - PATTERN_CHAR_BASE] = true;
1592 } else {
1593 foundRepetition = true;
1594 break;
1595 }
1596 count = 0;
1597 }
1598 if (ch == 0x0027 /*'*/) {
1599 // Consecutive single quotes are a single quote literal,
1600 // either outside of quotes or between quotes
1601 if ((i+1) < intervalPattern.length() &&
1602 intervalPattern.charAt(i+1) == 0x0027 /*'*/) {
1603 ++i;
1604 } else {
1605 inQuote = ! inQuote;
1606 }
1607 }
1608 else if (!inQuote && ((ch >= 0x0061 /*'a'*/ && ch <= 0x007A /*'z'*/)
1609 || (ch >= 0x0041 /*'A'*/ && ch <= 0x005A /*'Z'*/))) {
1610 // ch is a date-time pattern character
1611 prevCh = ch;
1612 ++count;
1613 }
1614 }
1615 // check last pattern char, distinguish
1616 // "dd MM" ( no repetition ),
1617 // "d-d"(last char repeated ), and
1618 // "d-d MM" ( repetition found )
1619 if ( count > 0 && foundRepetition == false ) {
1620 if (patternRepeated[prevCh - PATTERN_CHAR_BASE] == false) {
1621 count = 0;
1622 }
1623 }
1624 return (i - count);
1625}
1626
1627// The following is only called from fallbackFormat, i.e. within the gFormatterMutex lock
1628void DateIntervalFormat::fallbackFormatRange(
1629 Calendar& fromCalendar,
1630 Calendar& toCalendar,
1631 UnicodeString& appendTo,
1632 int8_t& firstIndex,
1633 FieldPositionHandler& fphandler,
1634 UErrorCode& status) const {
1635 UnicodeString fallbackPattern;
1636 fInfo->getFallbackIntervalPattern(fallbackPattern);
1637 SimpleFormatter sf(fallbackPattern, 2, 2, status);
1638 if (U_FAILURE(status)) {
1639 return;
1640 }
1641 int32_t offsets[2];
1642 UnicodeString patternBody = sf.getTextWithNoArguments(offsets, 2);
1643
1644 UErrorCode tempStatus = U_ZERO_ERROR; // for setContext, ignored
1645 // TODO(ICU-20406): Use SimpleFormatter Iterator interface when available.
1646 if (offsets[0] < offsets[1]) {
1647 firstIndex = 0;
1648 appendTo.append(patternBody.tempSubStringBetween(0, offsets[0]));
1649 fDateFormat->_format(fromCalendar, appendTo, fphandler, status);
1650 appendTo.append(patternBody.tempSubStringBetween(offsets[0], offsets[1]));
1651 // No capitalization for second part of interval
1652 fDateFormat->setContext(UDISPCTX_CAPITALIZATION_NONE, tempStatus);
1653 fDateFormat->_format(toCalendar, appendTo, fphandler, status);
1654 appendTo.append(patternBody.tempSubStringBetween(offsets[1]));
1655 } else {
1656 firstIndex = 1;
1657 appendTo.append(patternBody.tempSubStringBetween(0, offsets[1]));
1658 fDateFormat->_format(toCalendar, appendTo, fphandler, status);
1659 appendTo.append(patternBody.tempSubStringBetween(offsets[1], offsets[0]));
1660 // No capitalization for second part of interval
1661 fDateFormat->setContext(UDISPCTX_CAPITALIZATION_NONE, tempStatus);
1662 fDateFormat->_format(fromCalendar, appendTo, fphandler, status);
1663 appendTo.append(patternBody.tempSubStringBetween(offsets[0]));
1664 }
1665}
1666
1667// The following is only called from formatImpl, i.e. within the gFormatterMutex lock
1668UnicodeString&
1669DateIntervalFormat::fallbackFormat(Calendar& fromCalendar,
1670 Calendar& toCalendar,
1671 UBool fromToOnSameDay, // new
1672 UnicodeString& appendTo,
1673 int8_t& firstIndex,
1674 FieldPositionHandler& fphandler,
1675 UErrorCode& status) const {
1676 if ( U_FAILURE(status) ) {
1677 return appendTo;
1678 }
1679
1680 UBool formatDatePlusTimeRange = (fromToOnSameDay && fDatePattern && fTimePattern);
1681 if (formatDatePlusTimeRange) {
1682 SimpleFormatter sf(*fDateTimeFormat, 2, 2, status);
1683 if (U_FAILURE(status)) {
1684 return appendTo;
1685 }
1686 int32_t offsets[2];
1687 UnicodeString patternBody = sf.getTextWithNoArguments(offsets, 2);
1688
1689 UnicodeString fullPattern; // for saving the pattern in fDateFormat
1690 fDateFormat->toPattern(fullPattern); // save current pattern, restore later
1691
1692 UErrorCode tempStatus = U_ZERO_ERROR; // for setContext, ignored
1693 // {0} is time range
1694 // {1} is single date portion
1695 // TODO(ICU-20406): Use SimpleFormatter Iterator interface when available.
1696 if (offsets[0] < offsets[1]) {
1697 appendTo.append(patternBody.tempSubStringBetween(0, offsets[0]));
1698 fDateFormat->applyPattern(*fTimePattern);
1699 fallbackFormatRange(fromCalendar, toCalendar, appendTo, firstIndex, fphandler, status);
1700 appendTo.append(patternBody.tempSubStringBetween(offsets[0], offsets[1]));
1701 fDateFormat->applyPattern(*fDatePattern);
1702 // No capitalization for second portion
1703 fDateFormat->setContext(UDISPCTX_CAPITALIZATION_NONE, tempStatus);
1704 fDateFormat->_format(fromCalendar, appendTo, fphandler, status);
1705 appendTo.append(patternBody.tempSubStringBetween(offsets[1]));
1706 } else {
1707 appendTo.append(patternBody.tempSubStringBetween(0, offsets[1]));
1708 fDateFormat->applyPattern(*fDatePattern);
1709 fDateFormat->_format(fromCalendar, appendTo, fphandler, status);
1710 appendTo.append(patternBody.tempSubStringBetween(offsets[1], offsets[0]));
1711 fDateFormat->applyPattern(*fTimePattern);
1712 // No capitalization for second portion
1713 fDateFormat->setContext(UDISPCTX_CAPITALIZATION_NONE, tempStatus);
1714 fallbackFormatRange(fromCalendar, toCalendar, appendTo, firstIndex, fphandler, status);
1715 appendTo.append(patternBody.tempSubStringBetween(offsets[0]));
1716 }
1717
1718 // restore full pattern
1719 fDateFormat->applyPattern(fullPattern);
1720 } else {
1721 fallbackFormatRange(fromCalendar, toCalendar, appendTo, firstIndex, fphandler, status);
1722 }
1723 return appendTo;
1724}
1725
1726
1727
1728
1729UBool U_EXPORT2
1730DateIntervalFormat::fieldExistsInSkeleton(UCalendarDateFields field,
1731 const UnicodeString& skeleton)
1732{
1733 const char16_t fieldChar = fgCalendarFieldToPatternLetter[field];
1734 return ( (skeleton.indexOf(fieldChar) == -1)?false:true ) ;
1735}
1736
1737
1738
1739void U_EXPORT2
1740DateIntervalFormat::adjustFieldWidth(const UnicodeString& inputSkeleton,
1741 const UnicodeString& bestMatchSkeleton,
1742 const UnicodeString& bestIntervalPattern,
1743 int8_t differenceInfo,
1744 UBool suppressDayPeriodField,
1745 UnicodeString& adjustedPtn) {
1746 adjustedPtn = bestIntervalPattern;
1747 int32_t inputSkeletonFieldWidth[] =
1748 {
1749 // A B C D E F G H I J K L M N O
1750 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1751 // P Q R S T U V W X Y Z
1752 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1753 // a b c d e f g h i j k l m n o
1754 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1755 // p q r s t u v w x y z
1756 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
1757 };
1758
1759 int32_t bestMatchSkeletonFieldWidth[] =
1760 {
1761 // A B C D E F G H I J K L M N O
1762 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1763 // P Q R S T U V W X Y Z
1764 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1765 // a b c d e f g h i j k l m n o
1766 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1767 // p q r s t u v w x y z
1768 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
1769 };
1770
1771 const int8_t PATTERN_CHAR_BASE = 0x41;
1772
1773 DateIntervalInfo::parseSkeleton(inputSkeleton, inputSkeletonFieldWidth);
1774 DateIntervalInfo::parseSkeleton(bestMatchSkeleton, bestMatchSkeletonFieldWidth);
1775 if (suppressDayPeriodField) {
1776 // remove the 'a' and any NBSP/NNBSP on one side of it
1777 findReplaceInPattern(adjustedPtn, UnicodeString(u"\u00A0a",-1), UnicodeString());
1778 findReplaceInPattern(adjustedPtn, UnicodeString(u"\u202Fa",-1), UnicodeString());
1779 findReplaceInPattern(adjustedPtn, UnicodeString(u"a\u00A0",-1), UnicodeString());
1780 findReplaceInPattern(adjustedPtn, UnicodeString(u"a\u202F",-1), UnicodeString());
1781 findReplaceInPattern(adjustedPtn, UnicodeString(LOW_A((char16_t)0x0061)), UnicodeString());
1782 // adjust interior double spaces, remove exterior whitespace
1783 findReplaceInPattern(adjustedPtn, UnicodeString(" "), UnicodeString(" "));
1784 adjustedPtn.trim();
1785 }
1786 if ( differenceInfo == 2 ) {
1787 if (inputSkeleton.indexOf(LOW_Z((char16_t)0x007A)) != -1) {
1788 bestMatchSkeletonFieldWidth[(int)(LOW_Z((char16_t)0x007A) - PATTERN_CHAR_BASE)] = bestMatchSkeletonFieldWidth[(int)(LOW_V((char16_t)0x0076) - PATTERN_CHAR_BASE)];
1789 findReplaceInPattern(adjustedPtn, UnicodeString(LOW_V((char16_t)0x0076)), UnicodeString(LOW_Z((char16_t)0x007A)));
1790 }
1791 if (inputSkeleton.indexOf(CAP_O((char16_t)0x004F)) != -1) {
1792 bestMatchSkeletonFieldWidth[(int)(CAP_O((char16_t)0x004F) - PATTERN_CHAR_BASE)] = bestMatchSkeletonFieldWidth[(int)(LOW_V((char16_t)0x0076) - PATTERN_CHAR_BASE)];
1793 findReplaceInPattern(adjustedPtn, UnicodeString(LOW_V((char16_t)0x0076)), UnicodeString(CAP_O((char16_t)0x004F)));
1794 }
1795 if (inputSkeleton.indexOf(CAP_K((char16_t)0x004B)) != -1) {
1796 findReplaceInPattern(adjustedPtn, UnicodeString(LOW_H((char16_t)0x0068)), UnicodeString(CAP_K((char16_t)0x004B)));
1797 }
1798 if (inputSkeleton.indexOf(LOW_K((char16_t)0x006B)) != -1) {
1799 findReplaceInPattern(adjustedPtn, UnicodeString(CAP_H((char16_t)0x0048)), UnicodeString(LOW_K((char16_t)0x006B)));
1800 }
1801 if (inputSkeleton.indexOf(LOW_B((char16_t)0x0062)) != -1) {
1802 findReplaceInPattern(adjustedPtn, UnicodeString(LOW_A((char16_t)0x0061)), UnicodeString(LOW_B((char16_t)0x0062)));
1803 }
1804 }
1805 if (adjustedPtn.indexOf(LOW_A((char16_t)0x0061)) != -1 && bestMatchSkeletonFieldWidth[LOW_A((char16_t)0x0061) - PATTERN_CHAR_BASE] == 0) {
1806 bestMatchSkeletonFieldWidth[LOW_A((char16_t)0x0061) - PATTERN_CHAR_BASE] = 1;
1807 }
1808 if (adjustedPtn.indexOf(LOW_B((char16_t)0x0062)) != -1 && bestMatchSkeletonFieldWidth[LOW_B((char16_t)0x0062) - PATTERN_CHAR_BASE] == 0) {
1809 bestMatchSkeletonFieldWidth[LOW_B((char16_t)0x0062) - PATTERN_CHAR_BASE] = 1;
1810 }
1811
1812 UBool inQuote = false;
1813 char16_t prevCh = 0;
1814 int32_t count = 0;
1815
1816 // loop through the pattern string character by character
1817 int32_t adjustedPtnLength = adjustedPtn.length();
1818 int32_t i;
1819 for (i = 0; i < adjustedPtnLength; ++i) {
1820 char16_t ch = adjustedPtn.charAt(i);
1821 if (ch != prevCh && count > 0) {
1822 // check the repeativeness of pattern letter
1823 char16_t skeletonChar = prevCh;
1824 if ( skeletonChar == CAP_L((char16_t)0x004C) ) {
1825 // there is no "L" (always be "M") in skeleton,
1826 // but there is "L" in pattern.
1827 // for skeleton "M+", the pattern might be "...L..."
1828 skeletonChar = CAP_M((char16_t)0x004D);
1829 }
1830 int32_t fieldCount = bestMatchSkeletonFieldWidth[skeletonChar - PATTERN_CHAR_BASE];
1831 int32_t inputFieldCount = inputSkeletonFieldWidth[skeletonChar - PATTERN_CHAR_BASE];
1832 if ( fieldCount == count && inputFieldCount > fieldCount ) {
1833 count = inputFieldCount - fieldCount;
1834 int32_t j;
1835 for ( j = 0; j < count; ++j ) {
1836 adjustedPtn.insert(i, prevCh);
1837 }
1838 i += count;
1839 adjustedPtnLength += count;
1840 }
1841 count = 0;
1842 }
1843 if (ch == 0x0027 /*'*/) {
1844 // Consecutive single quotes are a single quote literal,
1845 // either outside of quotes or between quotes
1846 if ((i+1) < adjustedPtn.length() && adjustedPtn.charAt(i+1) == 0x0027 /* ' */) {
1847 ++i;
1848 } else {
1849 inQuote = ! inQuote;
1850 }
1851 }
1852 else if ( ! inQuote && ((ch >= 0x0061 /*'a'*/ && ch <= 0x007A /*'z'*/)
1853 || (ch >= 0x0041 /*'A'*/ && ch <= 0x005A /*'Z'*/))) {
1854 // ch is a date-time pattern character
1855 prevCh = ch;
1856 ++count;
1857 }
1858 }
1859 if ( count > 0 ) {
1860 // last item
1861 // check the repeativeness of pattern letter
1862 char16_t skeletonChar = prevCh;
1863 if ( skeletonChar == CAP_L((char16_t)0x004C) ) {
1864 // there is no "L" (always be "M") in skeleton,
1865 // but there is "L" in pattern.
1866 // for skeleton "M+", the pattern might be "...L..."
1867 skeletonChar = CAP_M((char16_t)0x004D);
1868 }
1869 int32_t fieldCount = bestMatchSkeletonFieldWidth[skeletonChar - PATTERN_CHAR_BASE];
1870 int32_t inputFieldCount = inputSkeletonFieldWidth[skeletonChar - PATTERN_CHAR_BASE];
1871 if ( fieldCount == count && inputFieldCount > fieldCount ) {
1872 count = inputFieldCount - fieldCount;
1873 int32_t j;
1874 for ( j = 0; j < count; ++j ) {
1875 adjustedPtn.append(prevCh);
1876 }
1877 }
1878 }
1879}
1880
1881void
1882DateIntervalFormat::findReplaceInPattern(UnicodeString& targetString,
1883 const UnicodeString& strToReplace,
1884 const UnicodeString& strToReplaceWith) {
1885 int32_t firstQuoteIndex = targetString.indexOf(u'\'');
1886 if (firstQuoteIndex == -1) {
1887 targetString.findAndReplace(strToReplace, strToReplaceWith);
1888 } else {
1889 UnicodeString result;
1890 UnicodeString source = targetString;
1891
1892 while (firstQuoteIndex >= 0) {
1893 int32_t secondQuoteIndex = source.indexOf(u'\'', firstQuoteIndex + 1);
1894 if (secondQuoteIndex == -1) {
1895 secondQuoteIndex = source.length() - 1;
1896 }
1897
1898 UnicodeString unquotedText(source, 0, firstQuoteIndex);
1899 UnicodeString quotedText(source, firstQuoteIndex, secondQuoteIndex - firstQuoteIndex + 1);
1900
1901 unquotedText.findAndReplace(strToReplace, strToReplaceWith);
1902 result += unquotedText;
1903 result += quotedText;
1904
1905 source.remove(0, secondQuoteIndex + 1);
1906 firstQuoteIndex = source.indexOf(u'\'');
1907 }
1908 source.findAndReplace(strToReplace, strToReplaceWith);
1909 result += source;
1910 targetString = result;
1911 }
1912}
1913
1914
1915
1916void
1917DateIntervalFormat::concatSingleDate2TimeInterval(UnicodeString& format,
1918 const UnicodeString& datePattern,
1919 UCalendarDateFields field,
1920 UErrorCode& status) {
1921 // following should not set wrong status
1922 int32_t itvPtnIndex = DateIntervalInfo::calendarFieldToIntervalIndex(field,
1923 status);
1924 if ( U_FAILURE(status) ) {
1925 return;
1926 }
1927 PatternInfo& timeItvPtnInfo = fIntervalPatterns[itvPtnIndex];
1928 if ( !timeItvPtnInfo.firstPart.isEmpty() ) {
1929 UnicodeString timeIntervalPattern(timeItvPtnInfo.firstPart);
1930 timeIntervalPattern.append(timeItvPtnInfo.secondPart);
1931 UnicodeString combinedPattern;
1932 SimpleFormatter(format, 2, 2, status).
1933 format(timeIntervalPattern, datePattern, combinedPattern, status);
1934 if ( U_FAILURE(status) ) {
1935 return;
1936 }
1937 setIntervalPattern(field, combinedPattern, timeItvPtnInfo.laterDateFirst);
1938 }
1939 // else: fall back
1940 // it should not happen if the interval format defined is valid
1941}
1942
1943
1944
1945const char16_t
1946DateIntervalFormat::fgCalendarFieldToPatternLetter[] =
1947{
1948 /*GyM*/ CAP_G((char16_t)0x0047), LOW_Y((char16_t)0x0079), CAP_M((char16_t)0x004D),
1949 /*wWd*/ LOW_W((char16_t)0x0077), CAP_W((char16_t)0x0057), LOW_D((char16_t)0x0064),
1950 /*DEF*/ CAP_D((char16_t)0x0044), CAP_E((char16_t)0x0045), CAP_F((char16_t)0x0046),
1951 /*ahH*/ LOW_A((char16_t)0x0061), LOW_H((char16_t)0x0068), CAP_H((char16_t)0x0048),
1952 /*msS*/ LOW_M((char16_t)0x006D), LOW_S((char16_t)0x0073), CAP_S((char16_t)0x0053), // MINUTE, SECOND, MILLISECOND
1953 /*z.Y*/ LOW_Z((char16_t)0x007A), SPACE((char16_t)0x0020), CAP_Y((char16_t)0x0059), // ZONE_OFFSET, DST_OFFSET, YEAR_WOY,
1954 /*eug*/ LOW_E((char16_t)0x0065), LOW_U((char16_t)0x0075), LOW_G((char16_t)0x0067), // DOW_LOCAL, EXTENDED_YEAR, JULIAN_DAY,
1955 /*A..*/ CAP_A((char16_t)0x0041), SPACE((char16_t)0x0020), SPACE((char16_t)0x0020), // MILLISECONDS_IN_DAY, IS_LEAP_MONTH, FIELD_COUNT
1956};
1957
1958
1959
1960U_NAMESPACE_END}
1961
1962#endif