1665 lines
54 KiB
C++
1665 lines
54 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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*******************************************************************************
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*
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* Copyright (C) 2001-2015, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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* file name: ustrcase.cpp
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* encoding: UTF-8
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2002feb20
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* created by: Markus W. Scherer
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*
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* Implementation file for string casing C API functions.
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* Uses functions from uchar.c for basic functionality that requires access
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* to the Unicode Character Database (uprops.dat).
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*/
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#include "unicode/utypes.h"
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#include "unicode/brkiter.h"
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#include "unicode/casemap.h"
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#include "unicode/edits.h"
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#include "unicode/ustring.h"
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#include "unicode/ucasemap.h"
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#include "unicode/ubrk.h"
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#include "unicode/utf.h"
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#include "unicode/utf16.h"
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#include "cmemory.h"
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#include "ucase.h"
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#include "ucasemap_imp.h"
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#include "ustr_imp.h"
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#include "uassert.h"
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U_NAMESPACE_BEGIN
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namespace {
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int32_t checkOverflowAndEditsError(int32_t destIndex, int32_t destCapacity,
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Edits *edits, UErrorCode &errorCode) {
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if (U_SUCCESS(errorCode)) {
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if (destIndex > destCapacity) {
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errorCode = U_BUFFER_OVERFLOW_ERROR;
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} else if (edits != NULL) {
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edits->copyErrorTo(errorCode);
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}
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}
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return destIndex;
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}
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} // namespace
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U_NAMESPACE_END
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U_NAMESPACE_USE
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/* string casing ------------------------------------------------------------ */
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/* Appends a full case mapping result, see UCASE_MAX_STRING_LENGTH. */
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static inline int32_t
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appendResult(UChar *dest, int32_t destIndex, int32_t destCapacity,
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int32_t result, const UChar *s,
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int32_t cpLength, uint32_t options, icu::Edits *edits) {
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UChar32 c;
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int32_t length;
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/* decode the result */
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if(result<0) {
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/* (not) original code point */
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if(edits!=NULL) {
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edits->addUnchanged(cpLength);
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if(options & U_OMIT_UNCHANGED_TEXT) {
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return destIndex;
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}
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}
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c=~result;
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if(destIndex<destCapacity && c<=0xffff) { // BMP slightly-fastpath
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dest[destIndex++]=(UChar)c;
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return destIndex;
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}
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length=cpLength;
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} else {
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if(result<=UCASE_MAX_STRING_LENGTH) {
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c=U_SENTINEL;
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length=result;
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} else if(destIndex<destCapacity && result<=0xffff) { // BMP slightly-fastpath
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dest[destIndex++]=(UChar)result;
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if(edits!=NULL) {
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edits->addReplace(cpLength, 1);
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}
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return destIndex;
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} else {
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c=result;
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length=U16_LENGTH(c);
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}
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if(edits!=NULL) {
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edits->addReplace(cpLength, length);
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}
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}
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if(length>(INT32_MAX-destIndex)) {
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return -1; // integer overflow
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}
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if(destIndex<destCapacity) {
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/* append the result */
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if(c>=0) {
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/* code point */
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UBool isError=FALSE;
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U16_APPEND(dest, destIndex, destCapacity, c, isError);
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if(isError) {
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/* overflow, nothing written */
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destIndex+=length;
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}
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} else {
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/* string */
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if((destIndex+length)<=destCapacity) {
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while(length>0) {
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dest[destIndex++]=*s++;
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--length;
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}
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} else {
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/* overflow */
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destIndex+=length;
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}
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}
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} else {
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/* preflight */
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destIndex+=length;
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}
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return destIndex;
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}
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static inline int32_t
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appendUChar(UChar *dest, int32_t destIndex, int32_t destCapacity, UChar c) {
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if(destIndex<destCapacity) {
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dest[destIndex]=c;
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} else if(destIndex==INT32_MAX) {
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return -1; // integer overflow
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}
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return destIndex+1;
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}
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static inline int32_t
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appendUnchanged(UChar *dest, int32_t destIndex, int32_t destCapacity,
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const UChar *s, int32_t length, uint32_t options, icu::Edits *edits) {
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if(length>0) {
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if(edits!=NULL) {
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edits->addUnchanged(length);
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if(options & U_OMIT_UNCHANGED_TEXT) {
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return destIndex;
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}
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}
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if(length>(INT32_MAX-destIndex)) {
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return -1; // integer overflow
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}
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if((destIndex+length)<=destCapacity) {
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u_memcpy(dest+destIndex, s, length);
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}
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destIndex+=length;
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}
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return destIndex;
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}
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static UChar32 U_CALLCONV
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utf16_caseContextIterator(void *context, int8_t dir) {
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UCaseContext *csc=(UCaseContext *)context;
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UChar32 c;
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if(dir<0) {
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/* reset for backward iteration */
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csc->index=csc->cpStart;
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csc->dir=dir;
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} else if(dir>0) {
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/* reset for forward iteration */
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csc->index=csc->cpLimit;
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csc->dir=dir;
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} else {
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/* continue current iteration direction */
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dir=csc->dir;
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}
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if(dir<0) {
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if(csc->start<csc->index) {
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U16_PREV((const UChar *)csc->p, csc->start, csc->index, c);
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return c;
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}
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} else {
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if(csc->index<csc->limit) {
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U16_NEXT((const UChar *)csc->p, csc->index, csc->limit, c);
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return c;
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}
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}
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return U_SENTINEL;
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}
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/*
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* Case-maps [srcStart..srcLimit[ but takes
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* context [0..srcLength[ into account.
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*/
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static int32_t
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_caseMap(int32_t caseLocale, uint32_t options, UCaseMapFull *map,
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UChar *dest, int32_t destCapacity,
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const UChar *src, UCaseContext *csc,
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int32_t srcStart, int32_t srcLimit,
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icu::Edits *edits,
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UErrorCode &errorCode) {
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/* case mapping loop */
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int32_t srcIndex=srcStart;
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int32_t destIndex=0;
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while(srcIndex<srcLimit) {
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int32_t cpStart;
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csc->cpStart=cpStart=srcIndex;
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UChar32 c;
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U16_NEXT(src, srcIndex, srcLimit, c);
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csc->cpLimit=srcIndex;
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const UChar *s;
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c=map(c, utf16_caseContextIterator, csc, &s, caseLocale);
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destIndex = appendResult(dest, destIndex, destCapacity, c, s,
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srcIndex - cpStart, options, edits);
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if (destIndex < 0) {
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errorCode = U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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}
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return destIndex;
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}
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#if !UCONFIG_NO_BREAK_ITERATION
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U_CFUNC int32_t U_CALLCONV
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ustrcase_internalToTitle(int32_t caseLocale, uint32_t options, BreakIterator *iter,
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UChar *dest, int32_t destCapacity,
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const UChar *src, int32_t srcLength,
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icu::Edits *edits,
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UErrorCode &errorCode) {
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if (!ustrcase_checkTitleAdjustmentOptions(options, errorCode)) {
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return 0;
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}
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/* set up local variables */
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UCaseContext csc=UCASECONTEXT_INITIALIZER;
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csc.p=(void *)src;
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csc.limit=srcLength;
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int32_t destIndex=0;
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int32_t prev=0;
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UBool isFirstIndex=TRUE;
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/* titlecasing loop */
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while(prev<srcLength) {
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/* find next index where to titlecase */
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int32_t index;
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if(isFirstIndex) {
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isFirstIndex=FALSE;
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index=iter->first();
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} else {
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index=iter->next();
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}
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if(index==UBRK_DONE || index>srcLength) {
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index=srcLength;
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}
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/*
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* Segment [prev..index[ into 3 parts:
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* a) skipped characters (copy as-is) [prev..titleStart[
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* b) first letter (titlecase) [titleStart..titleLimit[
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* c) subsequent characters (lowercase) [titleLimit..index[
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*/
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if(prev<index) {
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// Find and copy skipped characters [prev..titleStart[
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int32_t titleStart=prev;
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int32_t titleLimit=prev;
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UChar32 c;
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U16_NEXT(src, titleLimit, index, c);
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if ((options&U_TITLECASE_NO_BREAK_ADJUSTMENT)==0) {
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// Adjust the titlecasing index to the next cased character,
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// or to the next letter/number/symbol/private use.
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// Stop with titleStart<titleLimit<=index
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// if there is a character to be titlecased,
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// or else stop with titleStart==titleLimit==index.
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UBool toCased = (options&U_TITLECASE_ADJUST_TO_CASED) != 0;
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while (toCased ? UCASE_NONE==ucase_getType(c) : !ustrcase_isLNS(c)) {
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titleStart=titleLimit;
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if(titleLimit==index) {
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break;
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}
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U16_NEXT(src, titleLimit, index, c);
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}
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if (prev < titleStart) {
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destIndex=appendUnchanged(dest, destIndex, destCapacity,
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src+prev, titleStart-prev, options, edits);
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if(destIndex<0) {
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errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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}
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}
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if(titleStart<titleLimit) {
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/* titlecase c which is from [titleStart..titleLimit[ */
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csc.cpStart=titleStart;
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csc.cpLimit=titleLimit;
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const UChar *s;
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c=ucase_toFullTitle(c, utf16_caseContextIterator, &csc, &s, caseLocale);
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destIndex=appendResult(dest, destIndex, destCapacity, c, s,
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titleLimit-titleStart, options, edits);
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if(destIndex<0) {
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errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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/* Special case Dutch IJ titlecasing */
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if (titleStart+1 < index &&
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caseLocale == UCASE_LOC_DUTCH &&
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(src[titleStart] == 0x0049 || src[titleStart] == 0x0069)) {
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if (src[titleStart+1] == 0x006A) {
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destIndex=appendUChar(dest, destIndex, destCapacity, 0x004A);
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if(destIndex<0) {
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errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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if(edits!=NULL) {
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edits->addReplace(1, 1);
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}
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titleLimit++;
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} else if (src[titleStart+1] == 0x004A) {
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// Keep the capital J from getting lowercased.
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destIndex=appendUnchanged(dest, destIndex, destCapacity,
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src+titleStart+1, 1, options, edits);
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if(destIndex<0) {
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errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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titleLimit++;
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}
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}
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/* lowercase [titleLimit..index[ */
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if(titleLimit<index) {
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if((options&U_TITLECASE_NO_LOWERCASE)==0) {
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/* Normal operation: Lowercase the rest of the word. */
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destIndex+=
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_caseMap(
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caseLocale, options, ucase_toFullLower,
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dest+destIndex, destCapacity-destIndex,
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src, &csc,
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titleLimit, index,
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edits, errorCode);
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if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
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errorCode=U_ZERO_ERROR;
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}
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if(U_FAILURE(errorCode)) {
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return destIndex;
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}
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} else {
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/* Optionally just copy the rest of the word unchanged. */
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destIndex=appendUnchanged(dest, destIndex, destCapacity,
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src+titleLimit, index-titleLimit, options, edits);
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if(destIndex<0) {
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errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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}
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}
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}
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}
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prev=index;
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}
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return checkOverflowAndEditsError(destIndex, destCapacity, edits, errorCode);
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}
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#endif // !UCONFIG_NO_BREAK_ITERATION
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U_NAMESPACE_BEGIN
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namespace GreekUpper {
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// Data generated by prototype code, see
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// http://site.icu-project.org/design/case/greek-upper
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// TODO: Move this data into ucase.icu.
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static const uint16_t data0370[] = {
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// U+0370..03FF
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0x0370,
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0x0370,
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0x0372,
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0x0372,
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0,
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0,
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0x0376,
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0x0376,
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0,
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0,
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0x037A,
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0x03FD,
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0x03FE,
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0x03FF,
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0,
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0x037F,
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0,
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0,
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0,
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0,
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0,
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0,
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0x0391 | HAS_VOWEL | HAS_ACCENT,
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0,
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0x0395 | HAS_VOWEL | HAS_ACCENT,
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0x0397 | HAS_VOWEL | HAS_ACCENT,
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0x0399 | HAS_VOWEL | HAS_ACCENT,
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0,
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0x039F | HAS_VOWEL | HAS_ACCENT,
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0,
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0x03A5 | HAS_VOWEL | HAS_ACCENT,
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0x03A9 | HAS_VOWEL | HAS_ACCENT,
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0x0399 | HAS_VOWEL | HAS_ACCENT | HAS_DIALYTIKA,
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0x0391 | HAS_VOWEL,
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0x0392,
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0x0393,
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0x0394,
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0x0395 | HAS_VOWEL,
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0x0396,
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0x0397 | HAS_VOWEL,
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0x0398,
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0x0399 | HAS_VOWEL,
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0x039A,
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0x039B,
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0x039C,
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0x039D,
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0x039E,
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0x039F | HAS_VOWEL,
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0x03A0,
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0x03A1,
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0,
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0x03A3,
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0x03A4,
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0x03A5 | HAS_VOWEL,
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0x03A6,
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0x03A7,
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0x03A8,
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0x03A9 | HAS_VOWEL,
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0x0399 | HAS_VOWEL | HAS_DIALYTIKA,
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0x03A5 | HAS_VOWEL | HAS_DIALYTIKA,
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0x0391 | HAS_VOWEL | HAS_ACCENT,
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0x0395 | HAS_VOWEL | HAS_ACCENT,
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0x0397 | HAS_VOWEL | HAS_ACCENT,
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0x0399 | HAS_VOWEL | HAS_ACCENT,
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0x03A5 | HAS_VOWEL | HAS_ACCENT | HAS_DIALYTIKA,
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0x0391 | HAS_VOWEL,
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0x0392,
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0x0393,
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0x0394,
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0x0395 | HAS_VOWEL,
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0x0396,
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0x0397 | HAS_VOWEL,
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0x0398,
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0x0399 | HAS_VOWEL,
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0x039A,
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0x039B,
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0x039C,
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0x039D,
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0x039E,
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0x039F | HAS_VOWEL,
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0x03A0,
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0x03A1,
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0x03A3,
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0x03A3,
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0x03A4,
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0x03A5 | HAS_VOWEL,
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0x03A6,
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0x03A7,
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0x03A8,
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0x03A9 | HAS_VOWEL,
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0x0399 | HAS_VOWEL | HAS_DIALYTIKA,
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0x03A5 | HAS_VOWEL | HAS_DIALYTIKA,
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0x039F | HAS_VOWEL | HAS_ACCENT,
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0x03A5 | HAS_VOWEL | HAS_ACCENT,
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0x03A9 | HAS_VOWEL | HAS_ACCENT,
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0x03CF,
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0x0392,
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0x0398,
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0x03D2,
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0x03D2 | HAS_ACCENT,
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0x03D2 | HAS_DIALYTIKA,
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0x03A6,
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0x03A0,
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0x03CF,
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0x03D8,
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0x03D8,
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0x03DA,
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0x03DA,
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0x03DC,
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0x03DC,
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0x03DE,
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0x03DE,
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0x03E0,
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0x03E0,
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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0,
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0x039A,
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0x03A1,
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0x03F9,
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0x037F,
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0x03F4,
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0x0395 | HAS_VOWEL,
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0,
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0x03F7,
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0x03F7,
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0x03F9,
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0x03FA,
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0x03FA,
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0x03FC,
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0x03FD,
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0x03FE,
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|
0x03FF,
|
|
};
|
|
|
|
static const uint16_t data1F00[] = {
|
|
// U+1F00..1FFF
|
|
0x0391 | HAS_VOWEL,
|
|
0x0391 | HAS_VOWEL,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL,
|
|
0x0391 | HAS_VOWEL,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0395 | HAS_VOWEL,
|
|
0x0395 | HAS_VOWEL,
|
|
0x0395 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0395 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0395 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0395 | HAS_VOWEL | HAS_ACCENT,
|
|
0,
|
|
0,
|
|
0x0395 | HAS_VOWEL,
|
|
0x0395 | HAS_VOWEL,
|
|
0x0395 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0395 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0395 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0395 | HAS_VOWEL | HAS_ACCENT,
|
|
0,
|
|
0,
|
|
0x0397 | HAS_VOWEL,
|
|
0x0397 | HAS_VOWEL,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL,
|
|
0x0397 | HAS_VOWEL,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL,
|
|
0x0399 | HAS_VOWEL,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL,
|
|
0x0399 | HAS_VOWEL,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x039F | HAS_VOWEL,
|
|
0x039F | HAS_VOWEL,
|
|
0x039F | HAS_VOWEL | HAS_ACCENT,
|
|
0x039F | HAS_VOWEL | HAS_ACCENT,
|
|
0x039F | HAS_VOWEL | HAS_ACCENT,
|
|
0x039F | HAS_VOWEL | HAS_ACCENT,
|
|
0,
|
|
0,
|
|
0x039F | HAS_VOWEL,
|
|
0x039F | HAS_VOWEL,
|
|
0x039F | HAS_VOWEL | HAS_ACCENT,
|
|
0x039F | HAS_VOWEL | HAS_ACCENT,
|
|
0x039F | HAS_VOWEL | HAS_ACCENT,
|
|
0x039F | HAS_VOWEL | HAS_ACCENT,
|
|
0,
|
|
0,
|
|
0x03A5 | HAS_VOWEL,
|
|
0x03A5 | HAS_VOWEL,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0,
|
|
0x03A5 | HAS_VOWEL,
|
|
0,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL,
|
|
0x03A9 | HAS_VOWEL,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL,
|
|
0x03A9 | HAS_VOWEL,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0395 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0395 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x039F | HAS_VOWEL | HAS_ACCENT,
|
|
0x039F | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0,
|
|
0,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL,
|
|
0x0391 | HAS_VOWEL,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL,
|
|
0x0391 | HAS_VOWEL,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0391 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0,
|
|
0x0399 | HAS_VOWEL,
|
|
0,
|
|
0,
|
|
0,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x0395 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0395 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0397 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0,
|
|
0,
|
|
0,
|
|
0x0399 | HAS_VOWEL,
|
|
0x0399 | HAS_VOWEL,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT | HAS_DIALYTIKA,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT | HAS_DIALYTIKA,
|
|
0,
|
|
0,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT | HAS_DIALYTIKA,
|
|
0x0399 | HAS_VOWEL,
|
|
0x0399 | HAS_VOWEL,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0x0399 | HAS_VOWEL | HAS_ACCENT,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0x03A5 | HAS_VOWEL,
|
|
0x03A5 | HAS_VOWEL,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT | HAS_DIALYTIKA,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT | HAS_DIALYTIKA,
|
|
0x03A1,
|
|
0x03A1,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT | HAS_DIALYTIKA,
|
|
0x03A5 | HAS_VOWEL,
|
|
0x03A5 | HAS_VOWEL,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A5 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A1,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI | HAS_ACCENT,
|
|
0x039F | HAS_VOWEL | HAS_ACCENT,
|
|
0x039F | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_ACCENT,
|
|
0x03A9 | HAS_VOWEL | HAS_YPOGEGRAMMENI,
|
|
0,
|
|
0,
|
|
0,
|
|
};
|
|
|
|
// U+2126 Ohm sign
|
|
static const uint16_t data2126 = 0x03A9 | HAS_VOWEL;
|
|
|
|
uint32_t getLetterData(UChar32 c) {
|
|
if (c < 0x370 || 0x2126 < c || (0x3ff < c && c < 0x1f00)) {
|
|
return 0;
|
|
} else if (c <= 0x3ff) {
|
|
return data0370[c - 0x370];
|
|
} else if (c <= 0x1fff) {
|
|
return data1F00[c - 0x1f00];
|
|
} else if (c == 0x2126) {
|
|
return data2126;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
uint32_t getDiacriticData(UChar32 c) {
|
|
switch (c) {
|
|
case 0x0300: // varia
|
|
case 0x0301: // tonos = oxia
|
|
case 0x0342: // perispomeni
|
|
case 0x0302: // circumflex can look like perispomeni
|
|
case 0x0303: // tilde can look like perispomeni
|
|
case 0x0311: // inverted breve can look like perispomeni
|
|
return HAS_ACCENT;
|
|
case 0x0308: // dialytika = diaeresis
|
|
return HAS_COMBINING_DIALYTIKA;
|
|
case 0x0344: // dialytika tonos
|
|
return HAS_COMBINING_DIALYTIKA | HAS_ACCENT;
|
|
case 0x0345: // ypogegrammeni = iota subscript
|
|
return HAS_YPOGEGRAMMENI;
|
|
case 0x0304: // macron
|
|
case 0x0306: // breve
|
|
case 0x0313: // comma above
|
|
case 0x0314: // reversed comma above
|
|
case 0x0343: // koronis
|
|
return HAS_OTHER_GREEK_DIACRITIC;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
UBool isFollowedByCasedLetter(const UChar *s, int32_t i, int32_t length) {
|
|
while (i < length) {
|
|
UChar32 c;
|
|
U16_NEXT(s, i, length, c);
|
|
int32_t type = ucase_getTypeOrIgnorable(c);
|
|
if ((type & UCASE_IGNORABLE) != 0) {
|
|
// Case-ignorable, continue with the loop.
|
|
} else if (type != UCASE_NONE) {
|
|
return TRUE; // Followed by cased letter.
|
|
} else {
|
|
return FALSE; // Uncased and not case-ignorable.
|
|
}
|
|
}
|
|
return FALSE; // Not followed by cased letter.
|
|
}
|
|
|
|
/**
|
|
* Greek string uppercasing with a state machine.
|
|
* Probably simpler than a stateless function that has to figure out complex context-before
|
|
* for each character.
|
|
* TODO: Try to re-consolidate one way or another with the non-Greek function.
|
|
*/
|
|
int32_t toUpper(uint32_t options,
|
|
UChar *dest, int32_t destCapacity,
|
|
const UChar *src, int32_t srcLength,
|
|
Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
int32_t destIndex=0;
|
|
uint32_t state = 0;
|
|
for (int32_t i = 0; i < srcLength;) {
|
|
int32_t nextIndex = i;
|
|
UChar32 c;
|
|
U16_NEXT(src, nextIndex, srcLength, c);
|
|
uint32_t nextState = 0;
|
|
int32_t type = ucase_getTypeOrIgnorable(c);
|
|
if ((type & UCASE_IGNORABLE) != 0) {
|
|
// c is case-ignorable
|
|
nextState |= (state & AFTER_CASED);
|
|
} else if (type != UCASE_NONE) {
|
|
// c is cased
|
|
nextState |= AFTER_CASED;
|
|
}
|
|
uint32_t data = getLetterData(c);
|
|
if (data > 0) {
|
|
uint32_t upper = data & UPPER_MASK;
|
|
// Add a dialytika to this iota or ypsilon vowel
|
|
// if we removed a tonos from the previous vowel,
|
|
// and that previous vowel did not also have (or gain) a dialytika.
|
|
// Adding one only to the final vowel in a longer sequence
|
|
// (which does not occur in normal writing) would require lookahead.
|
|
// Set the same flag as for preserving an existing dialytika.
|
|
if ((data & HAS_VOWEL) != 0 && (state & AFTER_VOWEL_WITH_ACCENT) != 0 &&
|
|
(upper == 0x399 || upper == 0x3A5)) {
|
|
data |= HAS_DIALYTIKA;
|
|
}
|
|
int32_t numYpogegrammeni = 0; // Map each one to a trailing, spacing, capital iota.
|
|
if ((data & HAS_YPOGEGRAMMENI) != 0) {
|
|
numYpogegrammeni = 1;
|
|
}
|
|
// Skip combining diacritics after this Greek letter.
|
|
while (nextIndex < srcLength) {
|
|
uint32_t diacriticData = getDiacriticData(src[nextIndex]);
|
|
if (diacriticData != 0) {
|
|
data |= diacriticData;
|
|
if ((diacriticData & HAS_YPOGEGRAMMENI) != 0) {
|
|
++numYpogegrammeni;
|
|
}
|
|
++nextIndex;
|
|
} else {
|
|
break; // not a Greek diacritic
|
|
}
|
|
}
|
|
if ((data & HAS_VOWEL_AND_ACCENT_AND_DIALYTIKA) == HAS_VOWEL_AND_ACCENT) {
|
|
nextState |= AFTER_VOWEL_WITH_ACCENT;
|
|
}
|
|
// Map according to Greek rules.
|
|
UBool addTonos = FALSE;
|
|
if (upper == 0x397 &&
|
|
(data & HAS_ACCENT) != 0 &&
|
|
numYpogegrammeni == 0 &&
|
|
(state & AFTER_CASED) == 0 &&
|
|
!isFollowedByCasedLetter(src, nextIndex, srcLength)) {
|
|
// Keep disjunctive "or" with (only) a tonos.
|
|
// We use the same "word boundary" conditions as for the Final_Sigma test.
|
|
if (i == nextIndex) {
|
|
upper = 0x389; // Preserve the precomposed form.
|
|
} else {
|
|
addTonos = TRUE;
|
|
}
|
|
} else if ((data & HAS_DIALYTIKA) != 0) {
|
|
// Preserve a vowel with dialytika in precomposed form if it exists.
|
|
if (upper == 0x399) {
|
|
upper = 0x3AA;
|
|
data &= ~HAS_EITHER_DIALYTIKA;
|
|
} else if (upper == 0x3A5) {
|
|
upper = 0x3AB;
|
|
data &= ~HAS_EITHER_DIALYTIKA;
|
|
}
|
|
}
|
|
|
|
UBool change = TRUE;
|
|
if (edits != NULL) {
|
|
// Find out first whether we are changing the text.
|
|
change = src[i] != upper || numYpogegrammeni > 0;
|
|
int32_t i2 = i + 1;
|
|
if ((data & HAS_EITHER_DIALYTIKA) != 0) {
|
|
change |= i2 >= nextIndex || src[i2] != 0x308;
|
|
++i2;
|
|
}
|
|
if (addTonos) {
|
|
change |= i2 >= nextIndex || src[i2] != 0x301;
|
|
++i2;
|
|
}
|
|
int32_t oldLength = nextIndex - i;
|
|
int32_t newLength = (i2 - i) + numYpogegrammeni;
|
|
change |= oldLength != newLength;
|
|
if (change) {
|
|
if (edits != NULL) {
|
|
edits->addReplace(oldLength, newLength);
|
|
}
|
|
} else {
|
|
if (edits != NULL) {
|
|
edits->addUnchanged(oldLength);
|
|
}
|
|
// Write unchanged text?
|
|
change = (options & U_OMIT_UNCHANGED_TEXT) == 0;
|
|
}
|
|
}
|
|
|
|
if (change) {
|
|
destIndex=appendUChar(dest, destIndex, destCapacity, (UChar)upper);
|
|
if (destIndex >= 0 && (data & HAS_EITHER_DIALYTIKA) != 0) {
|
|
destIndex=appendUChar(dest, destIndex, destCapacity, 0x308); // restore or add a dialytika
|
|
}
|
|
if (destIndex >= 0 && addTonos) {
|
|
destIndex=appendUChar(dest, destIndex, destCapacity, 0x301);
|
|
}
|
|
while (destIndex >= 0 && numYpogegrammeni > 0) {
|
|
destIndex=appendUChar(dest, destIndex, destCapacity, 0x399);
|
|
--numYpogegrammeni;
|
|
}
|
|
if(destIndex<0) {
|
|
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
}
|
|
} else {
|
|
const UChar *s;
|
|
c=ucase_toFullUpper(c, NULL, NULL, &s, UCASE_LOC_GREEK);
|
|
destIndex = appendResult(dest, destIndex, destCapacity, c, s,
|
|
nextIndex - i, options, edits);
|
|
if (destIndex < 0) {
|
|
errorCode = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
}
|
|
i = nextIndex;
|
|
state = nextState;
|
|
}
|
|
|
|
return destIndex;
|
|
}
|
|
|
|
} // namespace GreekUpper
|
|
U_NAMESPACE_END
|
|
|
|
/* functions available in the common library (for unistr_case.cpp) */
|
|
|
|
U_CFUNC int32_t U_CALLCONV
|
|
ustrcase_internalToLower(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_UNUSED
|
|
UChar *dest, int32_t destCapacity,
|
|
const UChar *src, int32_t srcLength,
|
|
icu::Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
UCaseContext csc=UCASECONTEXT_INITIALIZER;
|
|
csc.p=(void *)src;
|
|
csc.limit=srcLength;
|
|
int32_t destIndex = _caseMap(
|
|
caseLocale, options, ucase_toFullLower,
|
|
dest, destCapacity,
|
|
src, &csc, 0, srcLength,
|
|
edits, errorCode);
|
|
return checkOverflowAndEditsError(destIndex, destCapacity, edits, errorCode);
|
|
}
|
|
|
|
U_CFUNC int32_t U_CALLCONV
|
|
ustrcase_internalToUpper(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_UNUSED
|
|
UChar *dest, int32_t destCapacity,
|
|
const UChar *src, int32_t srcLength,
|
|
icu::Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
int32_t destIndex;
|
|
if (caseLocale == UCASE_LOC_GREEK) {
|
|
destIndex = GreekUpper::toUpper(options, dest, destCapacity,
|
|
src, srcLength, edits, errorCode);
|
|
} else {
|
|
UCaseContext csc=UCASECONTEXT_INITIALIZER;
|
|
csc.p=(void *)src;
|
|
csc.limit=srcLength;
|
|
destIndex = _caseMap(
|
|
caseLocale, options, ucase_toFullUpper,
|
|
dest, destCapacity,
|
|
src, &csc, 0, srcLength,
|
|
edits, errorCode);
|
|
}
|
|
return checkOverflowAndEditsError(destIndex, destCapacity, edits, errorCode);
|
|
}
|
|
|
|
U_CFUNC int32_t U_CALLCONV
|
|
ustrcase_internalFold(int32_t /* caseLocale */, uint32_t options, UCASEMAP_BREAK_ITERATOR_UNUSED
|
|
UChar *dest, int32_t destCapacity,
|
|
const UChar *src, int32_t srcLength,
|
|
icu::Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
/* case mapping loop */
|
|
int32_t srcIndex = 0;
|
|
int32_t destIndex = 0;
|
|
while (srcIndex < srcLength) {
|
|
int32_t cpStart = srcIndex;
|
|
UChar32 c;
|
|
U16_NEXT(src, srcIndex, srcLength, c);
|
|
const UChar *s;
|
|
c = ucase_toFullFolding(c, &s, options);
|
|
destIndex = appendResult(dest, destIndex, destCapacity, c, s,
|
|
srcIndex - cpStart, options, edits);
|
|
if (destIndex < 0) {
|
|
errorCode = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return checkOverflowAndEditsError(destIndex, destCapacity, edits, errorCode);
|
|
}
|
|
|
|
U_CFUNC int32_t
|
|
ustrcase_map(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
|
|
UChar *dest, int32_t destCapacity,
|
|
const UChar *src, int32_t srcLength,
|
|
UStringCaseMapper *stringCaseMapper,
|
|
icu::Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
int32_t destLength;
|
|
|
|
/* check argument values */
|
|
if(U_FAILURE(errorCode)) {
|
|
return 0;
|
|
}
|
|
if( destCapacity<0 ||
|
|
(dest==NULL && destCapacity>0) ||
|
|
src==NULL ||
|
|
srcLength<-1
|
|
) {
|
|
errorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
/* get the string length */
|
|
if(srcLength==-1) {
|
|
srcLength=u_strlen(src);
|
|
}
|
|
|
|
/* check for overlapping source and destination */
|
|
if( dest!=NULL &&
|
|
((src>=dest && src<(dest+destCapacity)) ||
|
|
(dest>=src && dest<(src+srcLength)))
|
|
) {
|
|
errorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
if (edits != nullptr && (options & U_EDITS_NO_RESET) == 0) {
|
|
edits->reset();
|
|
}
|
|
destLength=stringCaseMapper(caseLocale, options, UCASEMAP_BREAK_ITERATOR
|
|
dest, destCapacity, src, srcLength, edits, errorCode);
|
|
return u_terminateUChars(dest, destCapacity, destLength, &errorCode);
|
|
}
|
|
|
|
U_CFUNC int32_t
|
|
ustrcase_mapWithOverlap(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
|
|
UChar *dest, int32_t destCapacity,
|
|
const UChar *src, int32_t srcLength,
|
|
UStringCaseMapper *stringCaseMapper,
|
|
UErrorCode &errorCode) {
|
|
UChar buffer[300];
|
|
UChar *temp;
|
|
|
|
int32_t destLength;
|
|
|
|
/* check argument values */
|
|
if(U_FAILURE(errorCode)) {
|
|
return 0;
|
|
}
|
|
if( destCapacity<0 ||
|
|
(dest==NULL && destCapacity>0) ||
|
|
src==NULL ||
|
|
srcLength<-1
|
|
) {
|
|
errorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
/* get the string length */
|
|
if(srcLength==-1) {
|
|
srcLength=u_strlen(src);
|
|
}
|
|
|
|
/* check for overlapping source and destination */
|
|
if( dest!=NULL &&
|
|
((src>=dest && src<(dest+destCapacity)) ||
|
|
(dest>=src && dest<(src+srcLength)))
|
|
) {
|
|
/* overlap: provide a temporary destination buffer and later copy the result */
|
|
if(destCapacity<=UPRV_LENGTHOF(buffer)) {
|
|
/* the stack buffer is large enough */
|
|
temp=buffer;
|
|
} else {
|
|
/* allocate a buffer */
|
|
temp=(UChar *)uprv_malloc(destCapacity*U_SIZEOF_UCHAR);
|
|
if(temp==NULL) {
|
|
errorCode=U_MEMORY_ALLOCATION_ERROR;
|
|
return 0;
|
|
}
|
|
}
|
|
} else {
|
|
temp=dest;
|
|
}
|
|
|
|
destLength=stringCaseMapper(caseLocale, options, UCASEMAP_BREAK_ITERATOR
|
|
temp, destCapacity, src, srcLength, NULL, errorCode);
|
|
if(temp!=dest) {
|
|
/* copy the result string to the destination buffer */
|
|
if (U_SUCCESS(errorCode) && 0 < destLength && destLength <= destCapacity) {
|
|
u_memmove(dest, temp, destLength);
|
|
}
|
|
if(temp!=buffer) {
|
|
uprv_free(temp);
|
|
}
|
|
}
|
|
|
|
return u_terminateUChars(dest, destCapacity, destLength, &errorCode);
|
|
}
|
|
|
|
/* public API functions */
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
u_strFoldCase(UChar *dest, int32_t destCapacity,
|
|
const UChar *src, int32_t srcLength,
|
|
uint32_t options,
|
|
UErrorCode *pErrorCode) {
|
|
return ustrcase_mapWithOverlap(
|
|
UCASE_LOC_ROOT, options, UCASEMAP_BREAK_ITERATOR_NULL
|
|
dest, destCapacity,
|
|
src, srcLength,
|
|
ustrcase_internalFold, *pErrorCode);
|
|
}
|
|
|
|
U_NAMESPACE_BEGIN
|
|
|
|
int32_t CaseMap::fold(
|
|
uint32_t options,
|
|
const UChar *src, int32_t srcLength,
|
|
UChar *dest, int32_t destCapacity, Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
return ustrcase_map(
|
|
UCASE_LOC_ROOT, options, UCASEMAP_BREAK_ITERATOR_NULL
|
|
dest, destCapacity,
|
|
src, srcLength,
|
|
ustrcase_internalFold, edits, errorCode);
|
|
}
|
|
|
|
U_NAMESPACE_END
|
|
|
|
/* case-insensitive string comparisons -------------------------------------- */
|
|
|
|
/*
|
|
* This function is a copy of unorm_cmpEquivFold() minus the parts for
|
|
* canonical equivalence.
|
|
* Keep the functions in sync, and see there for how this works.
|
|
* The duplication is for modularization:
|
|
* It makes caseless (but not canonical caseless) matches independent of
|
|
* the normalization code.
|
|
*/
|
|
|
|
/* stack element for previous-level source/decomposition pointers */
|
|
struct CmpEquivLevel {
|
|
const UChar *start, *s, *limit;
|
|
};
|
|
typedef struct CmpEquivLevel CmpEquivLevel;
|
|
|
|
/**
|
|
* Internal implementation code comparing string with case fold.
|
|
* This function is called from u_strcmpFold() and u_caseInsensitivePrefixMatch().
|
|
*
|
|
* @param s1 input string 1
|
|
* @param length1 length of string 1, or -1 (NULL terminated)
|
|
* @param s2 input string 2
|
|
* @param length2 length of string 2, or -1 (NULL terminated)
|
|
* @param options compare options
|
|
* @param matchLen1 (output) length of partial prefix match in s1
|
|
* @param matchLen2 (output) length of partial prefix match in s2
|
|
* @param pErrorCode receives error status
|
|
* @return The result of comparison
|
|
*/
|
|
static int32_t _cmpFold(
|
|
const UChar *s1, int32_t length1,
|
|
const UChar *s2, int32_t length2,
|
|
uint32_t options,
|
|
int32_t *matchLen1, int32_t *matchLen2,
|
|
UErrorCode *pErrorCode) {
|
|
int32_t cmpRes = 0;
|
|
|
|
/* current-level start/limit - s1/s2 as current */
|
|
const UChar *start1, *start2, *limit1, *limit2;
|
|
|
|
/* points to the original start address */
|
|
const UChar *org1, *org2;
|
|
|
|
/* points to the end of match + 1 */
|
|
const UChar *m1, *m2;
|
|
|
|
/* case folding variables */
|
|
const UChar *p;
|
|
int32_t length;
|
|
|
|
/* stacks of previous-level start/current/limit */
|
|
CmpEquivLevel stack1[2], stack2[2];
|
|
|
|
/* case folding buffers, only use current-level start/limit */
|
|
UChar fold1[UCASE_MAX_STRING_LENGTH+1], fold2[UCASE_MAX_STRING_LENGTH+1];
|
|
|
|
/* track which is the current level per string */
|
|
int32_t level1, level2;
|
|
|
|
/* current code units, and code points for lookups */
|
|
UChar32 c1, c2, cp1, cp2;
|
|
|
|
/* no argument error checking because this itself is not an API */
|
|
|
|
/*
|
|
* assume that at least the option U_COMPARE_IGNORE_CASE is set
|
|
* otherwise this function would have to behave exactly as uprv_strCompare()
|
|
*/
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return 0;
|
|
}
|
|
|
|
/* initialize */
|
|
if(matchLen1) {
|
|
U_ASSERT(matchLen2 !=NULL);
|
|
*matchLen1=0;
|
|
*matchLen2=0;
|
|
}
|
|
|
|
start1=m1=org1=s1;
|
|
if(length1==-1) {
|
|
limit1=NULL;
|
|
} else {
|
|
limit1=s1+length1;
|
|
}
|
|
|
|
start2=m2=org2=s2;
|
|
if(length2==-1) {
|
|
limit2=NULL;
|
|
} else {
|
|
limit2=s2+length2;
|
|
}
|
|
|
|
level1=level2=0;
|
|
c1=c2=-1;
|
|
|
|
/* comparison loop */
|
|
for(;;) {
|
|
/*
|
|
* here a code unit value of -1 means "get another code unit"
|
|
* below it will mean "this source is finished"
|
|
*/
|
|
|
|
if(c1<0) {
|
|
/* get next code unit from string 1, post-increment */
|
|
for(;;) {
|
|
if(s1==limit1 || ((c1=*s1)==0 && (limit1==NULL || (options&_STRNCMP_STYLE)))) {
|
|
if(level1==0) {
|
|
c1=-1;
|
|
break;
|
|
}
|
|
} else {
|
|
++s1;
|
|
break;
|
|
}
|
|
|
|
/* reached end of level buffer, pop one level */
|
|
do {
|
|
--level1;
|
|
start1=stack1[level1].start; /*Not uninitialized*/
|
|
} while(start1==NULL);
|
|
s1=stack1[level1].s; /*Not uninitialized*/
|
|
limit1=stack1[level1].limit; /*Not uninitialized*/
|
|
}
|
|
}
|
|
|
|
if(c2<0) {
|
|
/* get next code unit from string 2, post-increment */
|
|
for(;;) {
|
|
if(s2==limit2 || ((c2=*s2)==0 && (limit2==NULL || (options&_STRNCMP_STYLE)))) {
|
|
if(level2==0) {
|
|
c2=-1;
|
|
break;
|
|
}
|
|
} else {
|
|
++s2;
|
|
break;
|
|
}
|
|
|
|
/* reached end of level buffer, pop one level */
|
|
do {
|
|
--level2;
|
|
start2=stack2[level2].start; /*Not uninitialized*/
|
|
} while(start2==NULL);
|
|
s2=stack2[level2].s; /*Not uninitialized*/
|
|
limit2=stack2[level2].limit; /*Not uninitialized*/
|
|
}
|
|
}
|
|
|
|
/*
|
|
* compare c1 and c2
|
|
* either variable c1, c2 is -1 only if the corresponding string is finished
|
|
*/
|
|
if(c1==c2) {
|
|
const UChar *next1, *next2;
|
|
|
|
if(c1<0) {
|
|
cmpRes=0; /* c1==c2==-1 indicating end of strings */
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Note: Move the match positions in both strings at the same time
|
|
* only when corresponding code point(s) in the original strings
|
|
* are fully consumed. For example, when comparing s1="Fust" and
|
|
* s2="Fu\u00dfball", s2[2] is folded into "ss", and s1[2] matches
|
|
* the first code point in the case-folded data. But the second "s"
|
|
* has no matching code point in s1, so this implementation returns
|
|
* 2 as the prefix match length ("Fu").
|
|
*/
|
|
next1=next2=NULL;
|
|
if(level1==0) {
|
|
next1=s1;
|
|
} else if(s1==limit1) {
|
|
/* Note: This implementation only use a single level of stack.
|
|
* If this code needs to be changed to use multiple levels
|
|
* of stacks, the code above should check if the current
|
|
* code is at the end of all stacks.
|
|
*/
|
|
U_ASSERT(level1==1);
|
|
|
|
/* is s1 at the end of the current stack? */
|
|
next1=stack1[0].s;
|
|
}
|
|
|
|
if (next1!=NULL) {
|
|
if(level2==0) {
|
|
next2=s2;
|
|
} else if(s2==limit2) {
|
|
U_ASSERT(level2==1);
|
|
|
|
/* is s2 at the end of the current stack? */
|
|
next2=stack2[0].s;
|
|
}
|
|
if(next2!=NULL) {
|
|
m1=next1;
|
|
m2=next2;
|
|
}
|
|
}
|
|
c1=c2=-1; /* make us fetch new code units */
|
|
continue;
|
|
} else if(c1<0) {
|
|
cmpRes=-1; /* string 1 ends before string 2 */
|
|
break;
|
|
} else if(c2<0) {
|
|
cmpRes=1; /* string 2 ends before string 1 */
|
|
break;
|
|
}
|
|
/* c1!=c2 && c1>=0 && c2>=0 */
|
|
|
|
/* get complete code points for c1, c2 for lookups if either is a surrogate */
|
|
cp1=c1;
|
|
if(U_IS_SURROGATE(c1)) {
|
|
UChar c;
|
|
|
|
if(U_IS_SURROGATE_LEAD(c1)) {
|
|
if(s1!=limit1 && U16_IS_TRAIL(c=*s1)) {
|
|
/* advance ++s1; only below if cp1 decomposes/case-folds */
|
|
cp1=U16_GET_SUPPLEMENTARY(c1, c);
|
|
}
|
|
} else /* isTrail(c1) */ {
|
|
if(start1<=(s1-2) && U16_IS_LEAD(c=*(s1-2))) {
|
|
cp1=U16_GET_SUPPLEMENTARY(c, c1);
|
|
}
|
|
}
|
|
}
|
|
|
|
cp2=c2;
|
|
if(U_IS_SURROGATE(c2)) {
|
|
UChar c;
|
|
|
|
if(U_IS_SURROGATE_LEAD(c2)) {
|
|
if(s2!=limit2 && U16_IS_TRAIL(c=*s2)) {
|
|
/* advance ++s2; only below if cp2 decomposes/case-folds */
|
|
cp2=U16_GET_SUPPLEMENTARY(c2, c);
|
|
}
|
|
} else /* isTrail(c2) */ {
|
|
if(start2<=(s2-2) && U16_IS_LEAD(c=*(s2-2))) {
|
|
cp2=U16_GET_SUPPLEMENTARY(c, c2);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* go down one level for each string
|
|
* continue with the main loop as soon as there is a real change
|
|
*/
|
|
|
|
if( level1==0 &&
|
|
(length=ucase_toFullFolding((UChar32)cp1, &p, options))>=0
|
|
) {
|
|
/* cp1 case-folds to the code point "length" or to p[length] */
|
|
if(U_IS_SURROGATE(c1)) {
|
|
if(U_IS_SURROGATE_LEAD(c1)) {
|
|
/* advance beyond source surrogate pair if it case-folds */
|
|
++s1;
|
|
} else /* isTrail(c1) */ {
|
|
/*
|
|
* we got a supplementary code point when hitting its trail surrogate,
|
|
* therefore the lead surrogate must have been the same as in the other string;
|
|
* compare this decomposition with the lead surrogate in the other string
|
|
* remember that this simulates bulk text replacement:
|
|
* the decomposition would replace the entire code point
|
|
*/
|
|
--s2;
|
|
--m2;
|
|
c2=*(s2-1);
|
|
}
|
|
}
|
|
|
|
/* push current level pointers */
|
|
stack1[0].start=start1;
|
|
stack1[0].s=s1;
|
|
stack1[0].limit=limit1;
|
|
++level1;
|
|
|
|
/* copy the folding result to fold1[] */
|
|
if(length<=UCASE_MAX_STRING_LENGTH) {
|
|
u_memcpy(fold1, p, length);
|
|
} else {
|
|
int32_t i=0;
|
|
U16_APPEND_UNSAFE(fold1, i, length);
|
|
length=i;
|
|
}
|
|
|
|
/* set next level pointers to case folding */
|
|
start1=s1=fold1;
|
|
limit1=fold1+length;
|
|
|
|
/* get ready to read from decomposition, continue with loop */
|
|
c1=-1;
|
|
continue;
|
|
}
|
|
|
|
if( level2==0 &&
|
|
(length=ucase_toFullFolding((UChar32)cp2, &p, options))>=0
|
|
) {
|
|
/* cp2 case-folds to the code point "length" or to p[length] */
|
|
if(U_IS_SURROGATE(c2)) {
|
|
if(U_IS_SURROGATE_LEAD(c2)) {
|
|
/* advance beyond source surrogate pair if it case-folds */
|
|
++s2;
|
|
} else /* isTrail(c2) */ {
|
|
/*
|
|
* we got a supplementary code point when hitting its trail surrogate,
|
|
* therefore the lead surrogate must have been the same as in the other string;
|
|
* compare this decomposition with the lead surrogate in the other string
|
|
* remember that this simulates bulk text replacement:
|
|
* the decomposition would replace the entire code point
|
|
*/
|
|
--s1;
|
|
--m2;
|
|
c1=*(s1-1);
|
|
}
|
|
}
|
|
|
|
/* push current level pointers */
|
|
stack2[0].start=start2;
|
|
stack2[0].s=s2;
|
|
stack2[0].limit=limit2;
|
|
++level2;
|
|
|
|
/* copy the folding result to fold2[] */
|
|
if(length<=UCASE_MAX_STRING_LENGTH) {
|
|
u_memcpy(fold2, p, length);
|
|
} else {
|
|
int32_t i=0;
|
|
U16_APPEND_UNSAFE(fold2, i, length);
|
|
length=i;
|
|
}
|
|
|
|
/* set next level pointers to case folding */
|
|
start2=s2=fold2;
|
|
limit2=fold2+length;
|
|
|
|
/* get ready to read from decomposition, continue with loop */
|
|
c2=-1;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* no decomposition/case folding, max level for both sides:
|
|
* return difference result
|
|
*
|
|
* code point order comparison must not just return cp1-cp2
|
|
* because when single surrogates are present then the surrogate pairs
|
|
* that formed cp1 and cp2 may be from different string indexes
|
|
*
|
|
* example: { d800 d800 dc01 } vs. { d800 dc00 }, compare at second code units
|
|
* c1=d800 cp1=10001 c2=dc00 cp2=10000
|
|
* cp1-cp2>0 but c1-c2<0 and in fact in UTF-32 it is { d800 10001 } < { 10000 }
|
|
*
|
|
* therefore, use same fix-up as in ustring.c/uprv_strCompare()
|
|
* except: uprv_strCompare() fetches c=*s while this functions fetches c=*s++
|
|
* so we have slightly different pointer/start/limit comparisons here
|
|
*/
|
|
|
|
if(c1>=0xd800 && c2>=0xd800 && (options&U_COMPARE_CODE_POINT_ORDER)) {
|
|
/* subtract 0x2800 from BMP code points to make them smaller than supplementary ones */
|
|
if(
|
|
(c1<=0xdbff && s1!=limit1 && U16_IS_TRAIL(*s1)) ||
|
|
(U16_IS_TRAIL(c1) && start1!=(s1-1) && U16_IS_LEAD(*(s1-2)))
|
|
) {
|
|
/* part of a surrogate pair, leave >=d800 */
|
|
} else {
|
|
/* BMP code point - may be surrogate code point - make <d800 */
|
|
c1-=0x2800;
|
|
}
|
|
|
|
if(
|
|
(c2<=0xdbff && s2!=limit2 && U16_IS_TRAIL(*s2)) ||
|
|
(U16_IS_TRAIL(c2) && start2!=(s2-1) && U16_IS_LEAD(*(s2-2)))
|
|
) {
|
|
/* part of a surrogate pair, leave >=d800 */
|
|
} else {
|
|
/* BMP code point - may be surrogate code point - make <d800 */
|
|
c2-=0x2800;
|
|
}
|
|
}
|
|
|
|
cmpRes=c1-c2;
|
|
break;
|
|
}
|
|
|
|
if(matchLen1) {
|
|
*matchLen1=m1-org1;
|
|
*matchLen2=m2-org2;
|
|
}
|
|
return cmpRes;
|
|
}
|
|
|
|
/* internal function */
|
|
U_CFUNC int32_t
|
|
u_strcmpFold(const UChar *s1, int32_t length1,
|
|
const UChar *s2, int32_t length2,
|
|
uint32_t options,
|
|
UErrorCode *pErrorCode) {
|
|
return _cmpFold(s1, length1, s2, length2, options, NULL, NULL, pErrorCode);
|
|
}
|
|
|
|
/* public API functions */
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
u_strCaseCompare(const UChar *s1, int32_t length1,
|
|
const UChar *s2, int32_t length2,
|
|
uint32_t options,
|
|
UErrorCode *pErrorCode) {
|
|
/* argument checking */
|
|
if(pErrorCode==0 || U_FAILURE(*pErrorCode)) {
|
|
return 0;
|
|
}
|
|
if(s1==NULL || length1<-1 || s2==NULL || length2<-1) {
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
return u_strcmpFold(s1, length1, s2, length2,
|
|
options|U_COMPARE_IGNORE_CASE,
|
|
pErrorCode);
|
|
}
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
u_strcasecmp(const UChar *s1, const UChar *s2, uint32_t options) {
|
|
UErrorCode errorCode=U_ZERO_ERROR;
|
|
return u_strcmpFold(s1, -1, s2, -1,
|
|
options|U_COMPARE_IGNORE_CASE,
|
|
&errorCode);
|
|
}
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
u_memcasecmp(const UChar *s1, const UChar *s2, int32_t length, uint32_t options) {
|
|
UErrorCode errorCode=U_ZERO_ERROR;
|
|
return u_strcmpFold(s1, length, s2, length,
|
|
options|U_COMPARE_IGNORE_CASE,
|
|
&errorCode);
|
|
}
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
u_strncasecmp(const UChar *s1, const UChar *s2, int32_t n, uint32_t options) {
|
|
UErrorCode errorCode=U_ZERO_ERROR;
|
|
return u_strcmpFold(s1, n, s2, n,
|
|
options|(U_COMPARE_IGNORE_CASE|_STRNCMP_STYLE),
|
|
&errorCode);
|
|
}
|
|
|
|
/* internal API - detect length of shared prefix */
|
|
U_CAPI void
|
|
u_caseInsensitivePrefixMatch(const UChar *s1, int32_t length1,
|
|
const UChar *s2, int32_t length2,
|
|
uint32_t options,
|
|
int32_t *matchLen1, int32_t *matchLen2,
|
|
UErrorCode *pErrorCode) {
|
|
_cmpFold(s1, length1, s2, length2, options,
|
|
matchLen1, matchLen2, pErrorCode);
|
|
}
|