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Unified Diff: source/i18n/filteredbrk.cpp

Issue 845603002: Update ICU to 54.1 step 1 (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/icu.git@master
Patch Set: remove unusued directories Created 5 years, 11 months ago
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Index: source/i18n/filteredbrk.cpp
diff --git a/source/i18n/filteredbrk.cpp b/source/i18n/filteredbrk.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..43b2d5337bb4a80b0ea26d432626f0cf9f3c3875
--- /dev/null
+++ b/source/i18n/filteredbrk.cpp
@@ -0,0 +1,521 @@
+/*
+*******************************************************************************
+* Copyright (C) 2014, International Business Machines Corporation and
+* others. All Rights Reserved.
+*******************************************************************************
+*/
+
+#include "unicode/utypes.h"
+#if !UCONFIG_NO_BREAK_ITERATION && !UCONFIG_NO_FILTERED_BREAK_ITERATION
+
+#include "cmemory.h"
+
+#include "unicode/filteredbrk.h"
+#include "unicode/ucharstriebuilder.h"
+#include "unicode/ures.h"
+
+#include "uresimp.h" // ures_getByKeyWithFallback
+#include "ubrkimpl.h" // U_ICUDATA_BRKITR
+#include "uvector.h"
+#include "cmemory.h"
+
+U_NAMESPACE_BEGIN
+
+#ifndef FB_DEBUG
+#define FB_DEBUG 0
+#endif
+
+#if FB_DEBUG
+#include <stdio.h>
+static void _fb_trace(const char *m, const UnicodeString *s, UBool b, int32_t d, const char *f, int l) {
+ char buf[2048];
+ if(s) {
+ s->extract(0,s->length(),buf,2048);
+ } else {
+ strcpy(buf,"NULL");
+ }
+ fprintf(stderr,"%s:%d: %s. s='%s'(%p), b=%c, d=%d\n",
+ f, l, m, buf, (const void*)s, b?'T':'F',(int)d);
+}
+
+#define FB_TRACE(m,s,b,d) _fb_trace(m,s,b,d,__FILE__,__LINE__)
+#else
+#define FB_TRACE(m,s,b,d)
+#endif
+
+static int8_t U_CALLCONV compareUnicodeString(UElement t1, UElement t2) {
+ const UnicodeString &a = *(const UnicodeString*)t1.pointer;
+ const UnicodeString &b = *(const UnicodeString*)t2.pointer;
+ return a.compare(b);
+}
+
+/**
+ * A UVector which implements a set of strings.
+ */
+class U_I18N_API UStringSet : public UVector {
+ public:
+ UStringSet(UErrorCode &status) : UVector(uprv_deleteUObject,
+ uhash_compareUnicodeString,
+ 1,
+ status) {}
+ virtual ~UStringSet();
+ /**
+ * Is this UnicodeSet contained?
+ */
+ inline UBool contains(const UnicodeString& s) {
+ return contains((void*) &s);
+ }
+ using UVector::contains;
+ /**
+ * Return the ith UnicodeString alias
+ */
+ inline const UnicodeString* getStringAt(int32_t i) const {
+ return (const UnicodeString*)elementAt(i);
+ }
+ /**
+ * Adopt the UnicodeString if not already contained.
+ * Caller no longer owns the pointer in any case.
+ * @return true if adopted successfully, false otherwise (error, or else duplicate)
+ */
+ inline UBool adopt(UnicodeString *str, UErrorCode &status) {
+ if(U_FAILURE(status) || contains(*str)) {
+ delete str;
+ return false;
+ } else {
+ sortedInsert(str, compareUnicodeString, status);
+ if(U_FAILURE(status)) {
+ delete str;
+ return false;
+ }
+ return true;
+ }
+ }
+ /**
+ * Add by value.
+ * @return true if successfully adopted.
+ */
+ inline UBool add(const UnicodeString& str, UErrorCode &status) {
+ if(U_FAILURE(status)) return false;
+ UnicodeString *t = new UnicodeString(str);
+ if(t==NULL) {
+ status = U_MEMORY_ALLOCATION_ERROR; return false;
+ }
+ return adopt(t, status);
+ }
+ /**
+ * Remove this string.
+ * @return true if successfully removed, false otherwise (error, or else it wasn't there)
+ */
+ inline UBool remove(const UnicodeString &s, UErrorCode &status) {
+ if(U_FAILURE(status)) return false;
+ return removeElement((void*) &s);
+ }
+};
+
+/**
+ * Virtual, won't be inlined
+ */
+UStringSet::~UStringSet() {}
+
+
+static const int32_t kPARTIAL = (1<<0); //< partial - need to run through forward trie
+static const int32_t kMATCH = (1<<1); //< exact match - skip this one.
+static const int32_t kSuppressInReverse = (1<<0);
+static const int32_t kAddToForward = (1<<1);
+static const UChar kFULLSTOP = 0x002E; // '.'
+
+class SimpleFilteredSentenceBreakIterator : public BreakIterator {
+public:
+ SimpleFilteredSentenceBreakIterator(BreakIterator *adopt, UCharsTrie *forwards, UCharsTrie *backwards, UErrorCode &status);
+ SimpleFilteredSentenceBreakIterator(const SimpleFilteredSentenceBreakIterator& other);
+ virtual ~SimpleFilteredSentenceBreakIterator();
+private:
+ LocalPointer<BreakIterator> fDelegate;
+ LocalUTextPointer fText;
+ LocalPointer<UCharsTrie> fBackwardsTrie; // i.e. ".srM" for Mrs.
+ LocalPointer<UCharsTrie> fForwardsPartialTrie; // Has ".a" for "a.M."
+
+ /* -- subclass interface -- */
+public:
+ /* -- cloning and other subclass stuff -- */
+ virtual BreakIterator * createBufferClone(void * /*stackBuffer*/,
+ int32_t &/*BufferSize*/,
+ UErrorCode &status) {
+ // for now - always deep clone
+ status = U_SAFECLONE_ALLOCATED_WARNING;
+ return clone();
+ }
+ virtual BreakIterator* clone(void) const { return new SimpleFilteredSentenceBreakIterator(*this); }
+ virtual UClassID getDynamicClassID(void) const { return NULL; }
+ virtual UBool operator==(const BreakIterator& o) const { if(*this==o) return true; return false; }
+
+ /* -- text modifying -- */
+ virtual void setText(UText *text, UErrorCode &status) { fDelegate->setText(text,status); }
+ virtual BreakIterator &refreshInputText(UText *input, UErrorCode &status) { fDelegate->refreshInputText(input,status); return *this; }
+ virtual void adoptText(CharacterIterator* it) { fDelegate->adoptText(it); }
+ virtual void setText(const UnicodeString &text) { fDelegate->setText(text); }
+
+ /* -- other functions that are just delegated -- */
+ virtual UText *getUText(UText *fillIn, UErrorCode &status) const { return fDelegate->getUText(fillIn,status); }
+ virtual CharacterIterator& getText(void) const { return fDelegate->getText(); }
+
+ /* -- ITERATION -- */
+ virtual int32_t first(void) { return fDelegate->first(); }
+ virtual int32_t preceding(int32_t /*offset*/) { /* TODO: not implemented */ return UBRK_DONE; }
+ virtual int32_t previous(void) { /* TODO: not implemented */ return UBRK_DONE; }
+ virtual UBool isBoundary(int32_t offset) { return fDelegate->isBoundary(offset); }
+ virtual int32_t current(void) const { return fDelegate->current(); }
+
+ virtual int32_t next(void);
+
+ virtual int32_t next(int32_t /*n*/) { /* TODO: not implemented */ return UBRK_DONE; }
+ virtual int32_t following(int32_t /*offset*/) { /* TODO: not implemented */ return UBRK_DONE; }
+ virtual int32_t last(void) { return fDelegate->last(); }
+
+};
+
+SimpleFilteredSentenceBreakIterator::SimpleFilteredSentenceBreakIterator(const SimpleFilteredSentenceBreakIterator& other)
+ : BreakIterator(other), fDelegate(other.fDelegate->clone())
+{
+ /*
+ TODO: not able to clone Tries. Should be a refcounted hidden master instead.
+ if(other.fBackwardsTrie.isValid()) {
+ fBackwardsTrie.adoptInstead(other.fBackwardsTrie->clone());
+ }
+ if(other.fForwardsPartialTrie.isValid()) {
+ fForwardsPartialTrie.adoptInstead(other.fForwardsPartialTrie->clone());
+ }
+ */
+}
+
+
+SimpleFilteredSentenceBreakIterator::SimpleFilteredSentenceBreakIterator(BreakIterator *adopt, UCharsTrie *forwards, UCharsTrie *backwards, UErrorCode &status) :
+ BreakIterator(adopt->getLocale(ULOC_VALID_LOCALE,status),adopt->getLocale(ULOC_ACTUAL_LOCALE,status)),
+ fDelegate(adopt),
+ fBackwardsTrie(backwards),
+ fForwardsPartialTrie(forwards)
+{
+ // all set..
+}
+
+SimpleFilteredSentenceBreakIterator::~SimpleFilteredSentenceBreakIterator() {}
+
+int32_t SimpleFilteredSentenceBreakIterator::next() {
+ int32_t n = fDelegate->next();
+ if(n == UBRK_DONE || // at end or
+ fBackwardsTrie.isNull()) { // .. no backwards table loaded == no exceptions
+ return n;
+ }
+ // OK, do we need to break here?
+ UErrorCode status = U_ZERO_ERROR;
+ // refresh text
+ fText.adoptInstead(fDelegate->getUText(fText.orphan(), status));
+ //if(debug2) u_printf("str, native len=%d\n", utext_nativeLength(fText.getAlias()));
+ do { // outer loop runs once per underlying break (from fDelegate).
+ // loops while 'n' points to an exception.
+ utext_setNativeIndex(fText.getAlias(), n); // from n..
+ fBackwardsTrie->reset();
+ UChar32 uch;
+ //if(debug2) u_printf(" n@ %d\n", n);
+ // Assume a space is following the '.' (so we handle the case: "Mr. /Brown")
+ if((uch=utext_previous32(fText.getAlias()))==(UChar32)0x0020) { // TODO: skip a class of chars here??
+ // TODO only do this the 1st time?
+ //if(debug2) u_printf("skipping prev: |%C| \n", (UChar)uch);
+ } else {
+ //if(debug2) u_printf("not skipping prev: |%C| \n", (UChar)uch);
+ uch = utext_next32(fText.getAlias());
+ //if(debug2) u_printf(" -> : |%C| \n", (UChar)uch);
+ }
+ UStringTrieResult r = USTRINGTRIE_INTERMEDIATE_VALUE;
+
+ int32_t bestPosn = -1;
+ int32_t bestValue = -1;
+
+ while((uch=utext_previous32(fText.getAlias()))!=U_SENTINEL && // more to consume backwards and..
+ USTRINGTRIE_HAS_NEXT(r=fBackwardsTrie->nextForCodePoint(uch))) {// more in the trie
+ if(USTRINGTRIE_HAS_VALUE(r)) { // remember the best match so far
+ bestPosn = utext_getNativeIndex(fText.getAlias());
+ bestValue = fBackwardsTrie->getValue();
+ }
+ //if(debug2) u_printf("rev< /%C/ cont?%d @%d\n", (UChar)uch, r, utext_getNativeIndex(fText.getAlias()));
+ }
+
+ if(USTRINGTRIE_MATCHES(r)) { // exact match?
+ //if(debug2) u_printf("rev<?/%C/?end of seq.. r=%d, bestPosn=%d, bestValue=%d\n", (UChar)uch, r, bestPosn, bestValue);
+ bestValue = fBackwardsTrie->getValue();
+ bestPosn = utext_getNativeIndex(fText.getAlias());
+ //if(debug2) u_printf("rev<+/%C/+end of seq.. r=%d, bestPosn=%d, bestValue=%d\n", (UChar)uch, r, bestPosn, bestValue);
+ }
+
+ if(bestPosn>=0) {
+ //if(debug2) u_printf("rev< /%C/ end of seq.. r=%d, bestPosn=%d, bestValue=%d\n", (UChar)uch, r, bestPosn, bestValue);
+
+ //if(USTRINGTRIE_MATCHES(r)) { // matched - so, now what?
+ //int32_t bestValue = fBackwardsTrie->getValue();
+ ////if(debug2) u_printf("rev< /%C/ matched, skip..%d bestValue=%d\n", (UChar)uch, r, bestValue);
+
+ if(bestValue == kMATCH) { // exact match!
+ //if(debug2) u_printf(" exact backward match\n");
+ n = fDelegate->next(); // skip this one. Find the next lowerlevel break.
+ if(n==UBRK_DONE) return n;
+ continue; // See if the next is another exception.
+ } else if(bestValue == kPARTIAL
+ && fForwardsPartialTrie.isValid()) { // make sure there's a forward trie
+ //if(debug2) u_printf(" partial backward match\n");
+ // We matched the "Ph." in "Ph.D." - now we need to run everything through the forwards trie
+ // to see if it matches something going forward.
+ fForwardsPartialTrie->reset();
+ UStringTrieResult rfwd = USTRINGTRIE_INTERMEDIATE_VALUE;
+ utext_setNativeIndex(fText.getAlias(), bestPosn); // hope that's close ..
+ //if(debug2) u_printf("Retrying at %d\n", bestPosn);
+ while((uch=utext_next32(fText.getAlias()))!=U_SENTINEL &&
+ USTRINGTRIE_HAS_NEXT(rfwd=fForwardsPartialTrie->nextForCodePoint(uch))) {
+ //if(debug2) u_printf("fwd> /%C/ cont?%d @%d\n", (UChar)uch, rfwd, utext_getNativeIndex(fText.getAlias()));
+ }
+ if(USTRINGTRIE_MATCHES(rfwd)) {
+ //if(debug2) u_printf("fwd> /%C/ == forward match!\n", (UChar)uch);
+ // only full matches here, nothing to check
+ // skip the next:
+ n = fDelegate->next();
+ if(n==UBRK_DONE) return n;
+ continue;
+ } else {
+ //if(debug2) u_printf("fwd> /%C/ no match.\n", (UChar)uch);
+ // no match (no exception) -return the 'underlying' break
+ return n;
+ }
+ } else {
+ return n; // internal error and/or no forwards trie
+ }
+ } else {
+ //if(debug2) u_printf("rev< /%C/ .. no match..%d\n", (UChar)uch, r); // no best match
+ return n; // No match - so exit. Not an exception.
+ }
+ } while(n != UBRK_DONE);
+ return n;
+}
+
+/**
+ * Concrete implementation of builder class.
+ */
+class U_I18N_API SimpleFilteredBreakIteratorBuilder : public FilteredBreakIteratorBuilder {
+public:
+ virtual ~SimpleFilteredBreakIteratorBuilder();
+ SimpleFilteredBreakIteratorBuilder(const Locale &fromLocale, UErrorCode &status);
+ SimpleFilteredBreakIteratorBuilder(UErrorCode &status);
+ virtual UBool suppressBreakAfter(const UnicodeString& exception, UErrorCode& status);
+ virtual UBool unsuppressBreakAfter(const UnicodeString& exception, UErrorCode& status);
+ virtual BreakIterator *build(BreakIterator* adoptBreakIterator, UErrorCode& status);
+private:
+ UStringSet fSet;
+};
+
+SimpleFilteredBreakIteratorBuilder::~SimpleFilteredBreakIteratorBuilder()
+{
+}
+
+SimpleFilteredBreakIteratorBuilder::SimpleFilteredBreakIteratorBuilder(UErrorCode &status)
+ : fSet(status)
+{
+}
+
+SimpleFilteredBreakIteratorBuilder::SimpleFilteredBreakIteratorBuilder(const Locale &fromLocale, UErrorCode &status)
+ : fSet(status)
+{
+ if(U_SUCCESS(status)) {
+ LocalUResourceBundlePointer b(ures_open(U_ICUDATA_BRKITR, fromLocale.getBaseName(), &status));
+ LocalUResourceBundlePointer exceptions(ures_getByKeyWithFallback(b.getAlias(), "exceptions", NULL, &status));
+ LocalUResourceBundlePointer breaks(ures_getByKeyWithFallback(exceptions.getAlias(), "SentenceBreak", NULL, &status));
+ if(U_FAILURE(status)) return; // leaves the builder empty, if you try to use it.
+
+ LocalUResourceBundlePointer strs;
+ UErrorCode subStatus = status;
+ do {
+ strs.adoptInstead(ures_getNextResource(breaks.getAlias(), strs.orphan(), &subStatus));
+ if(strs.isValid() && U_SUCCESS(subStatus)) {
+ UnicodeString str(ures_getUnicodeString(strs.getAlias(), &status));
+ suppressBreakAfter(str, status); // load the string
+ }
+ } while (strs.isValid() && U_SUCCESS(subStatus));
+ if(U_FAILURE(subStatus)&&subStatus!=U_INDEX_OUTOFBOUNDS_ERROR&&U_SUCCESS(status)) {
+ status = subStatus;
+ }
+ }
+}
+
+UBool
+SimpleFilteredBreakIteratorBuilder::suppressBreakAfter(const UnicodeString& exception, UErrorCode& status)
+{
+ UBool r = fSet.add(exception, status);
+ FB_TRACE("suppressBreakAfter",&exception,r,0);
+ return r;
+}
+
+UBool
+SimpleFilteredBreakIteratorBuilder::unsuppressBreakAfter(const UnicodeString& exception, UErrorCode& status)
+{
+ UBool r = fSet.remove(exception, status);
+ FB_TRACE("unsuppressBreakAfter",&exception,r,0);
+ return r;
+}
+
+/**
+ * Jitterbug 2974: MSVC has a bug whereby new X[0] behaves badly.
+ * Work around this.
+ *
+ * Note: "new UnicodeString[subCount]" ends up calling global operator new
+ * on MSVC2012 for some reason.
+ */
+static inline UnicodeString* newUnicodeStringArray(size_t count) {
+ return new UnicodeString[count ? count : 1];
+}
+
+BreakIterator *
+SimpleFilteredBreakIteratorBuilder::build(BreakIterator* adoptBreakIterator, UErrorCode& status) {
+ LocalPointer<BreakIterator> adopt(adoptBreakIterator);
+
+ if(U_FAILURE(status)) {
+ return NULL;
+ }
+
+ LocalPointer<UCharsTrieBuilder> builder(new UCharsTrieBuilder(status));
+ LocalPointer<UCharsTrieBuilder> builder2(new UCharsTrieBuilder(status));
+
+ int32_t revCount = 0;
+ int32_t fwdCount = 0;
+
+ int32_t subCount = fSet.size();
+
+ UnicodeString *ustrs_ptr = newUnicodeStringArray(subCount);
+
+ LocalArray<UnicodeString> ustrs(ustrs_ptr);
+
+ LocalMemory<int> partials;
+ partials.allocateInsteadAndReset(subCount);
+
+ LocalPointer<UCharsTrie> backwardsTrie; // i.e. ".srM" for Mrs.
+ LocalPointer<UCharsTrie> forwardsPartialTrie; // Has ".a" for "a.M."
+
+ int n=0;
+ for ( int32_t i = 0;
+ i<fSet.size();
+ i++) {
+ const UnicodeString *abbr = fSet.getStringAt(i);
+ if(abbr) {
+ FB_TRACE("build",abbr,TRUE,i);
+ ustrs[n] = *abbr; // copy by value
+ FB_TRACE("ustrs[n]",&ustrs[n],TRUE,i);
+ } else {
+ FB_TRACE("build",abbr,FALSE,i);
+ status = U_MEMORY_ALLOCATION_ERROR;
+ return NULL;
+ }
+ partials[n] = 0; // default: not partial
+ n++;
+ }
+ // first pass - find partials.
+ for(int i=0;i<subCount;i++) {
+ int nn = ustrs[i].indexOf(kFULLSTOP); // TODO: non-'.' abbreviations
+ if(nn>-1 && (nn+1)!=ustrs[i].length()) {
+ FB_TRACE("partial",&ustrs[i],FALSE,i);
+ // is partial.
+ // is it unique?
+ int sameAs = -1;
+ for(int j=0;j<subCount;j++) {
+ if(j==i) continue;
+ if(ustrs[i].compare(0,nn+1,ustrs[j],0,nn+1)==0) {
+ FB_TRACE("prefix",&ustrs[j],FALSE,nn+1);
+ //UBool otherIsPartial = ((nn+1)!=ustrs[j].length()); // true if ustrs[j] doesn't end at nn
+ if(partials[j]==0) { // hasn't been processed yet
+ partials[j] = kSuppressInReverse | kAddToForward;
+ FB_TRACE("suppressing",&ustrs[j],FALSE,j);
+ } else if(partials[j] & kSuppressInReverse) {
+ sameAs = j; // the other entry is already in the reverse table.
+ }
+ }
+ }
+ FB_TRACE("for partial same-",&ustrs[i],FALSE,sameAs);
+ FB_TRACE(" == partial #",&ustrs[i],FALSE,partials[i]);
+ UnicodeString prefix(ustrs[i], 0, nn+1);
+ if(sameAs == -1 && partials[i] == 0) {
+ // first one - add the prefix to the reverse table.
+ prefix.reverse();
+ builder->add(prefix, kPARTIAL, status);
+ revCount++;
+ FB_TRACE("Added partial",&prefix,FALSE, i);
+ FB_TRACE(u_errorName(status),&ustrs[i],FALSE,i);
+ partials[i] = kSuppressInReverse | kAddToForward;
+ } else {
+ FB_TRACE("NOT adding partial",&prefix,FALSE, i);
+ FB_TRACE(u_errorName(status),&ustrs[i],FALSE,i);
+ }
+ }
+ }
+ for(int i=0;i<subCount;i++) {
+ if(partials[i]==0) {
+ ustrs[i].reverse();
+ builder->add(ustrs[i], kMATCH, status);
+ revCount++;
+ FB_TRACE(u_errorName(status), &ustrs[i], FALSE, i);
+ } else {
+ FB_TRACE("Adding fwd",&ustrs[i], FALSE, i);
+
+ // an optimization would be to only add the portion after the '.'
+ // for example, for "Ph.D." we store ".hP" in the reverse table. We could just store "D." in the forward,
+ // instead of "Ph.D." since we already know the "Ph." part is a match.
+ // would need the trie to be able to hold 0-length strings, though.
+ builder2->add(ustrs[i], kMATCH, status); // forward
+ fwdCount++;
+ //ustrs[i].reverse();
+ ////if(debug2) u_printf("SUPPRESS- not Added(%d): /%S/ status=%s\n",partials[i], ustrs[i].getTerminatedBuffer(), u_errorName(status));
+ }
+ }
+ FB_TRACE("AbbrCount",NULL,FALSE, subCount);
+
+ if(revCount>0) {
+ backwardsTrie.adoptInstead(builder->build(USTRINGTRIE_BUILD_FAST, status));
+ if(U_FAILURE(status)) {
+ FB_TRACE(u_errorName(status),NULL,FALSE, -1);
+ return NULL;
+ }
+ }
+
+ if(fwdCount>0) {
+ forwardsPartialTrie.adoptInstead(builder2->build(USTRINGTRIE_BUILD_FAST, status));
+ if(U_FAILURE(status)) {
+ FB_TRACE(u_errorName(status),NULL,FALSE, -1);
+ return NULL;
+ }
+ }
+
+ return new SimpleFilteredSentenceBreakIterator(adopt.orphan(), forwardsPartialTrie.orphan(), backwardsTrie.orphan(), status);
+}
+
+
+// ----------- Base class implementation
+
+FilteredBreakIteratorBuilder::FilteredBreakIteratorBuilder() {
+}
+
+FilteredBreakIteratorBuilder::~FilteredBreakIteratorBuilder() {
+}
+
+FilteredBreakIteratorBuilder *
+FilteredBreakIteratorBuilder::createInstance(const Locale& where, UErrorCode& status) {
+ if(U_FAILURE(status)) return NULL;
+ LocalPointer<FilteredBreakIteratorBuilder> ret(new SimpleFilteredBreakIteratorBuilder(where, status));
+ if(U_SUCCESS(status) && !ret.isValid()) status = U_MEMORY_ALLOCATION_ERROR;
+ return ret.orphan();
+}
+
+FilteredBreakIteratorBuilder *
+FilteredBreakIteratorBuilder::createInstance(UErrorCode& status) {
+ if(U_FAILURE(status)) return NULL;
+ LocalPointer<FilteredBreakIteratorBuilder> ret(new SimpleFilteredBreakIteratorBuilder(status));
+ if(U_SUCCESS(status) && !ret.isValid()) status = U_MEMORY_ALLOCATION_ERROR;
+ return ret.orphan();
+}
+
+U_NAMESPACE_END
+
+#endif //#if !UCONFIG_NO_BREAK_ITERATION && U_HAVE_STD_STRING && !UCONFIG_NO_FILTERED_BREAK_ITERATION
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