1039 lines
36 KiB
C++
1039 lines
36 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
|
|
// License & terms of use: http://www.unicode.org/copyright.html
|
|
/*
|
|
*******************************************************************************
|
|
*
|
|
* Copyright (C) 2005-2016, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
*
|
|
*******************************************************************************
|
|
* file name: ucasemap.cpp
|
|
* encoding: UTF-8
|
|
* tab size: 8 (not used)
|
|
* indentation:4
|
|
*
|
|
* created on: 2005may06
|
|
* created by: Markus W. Scherer
|
|
*
|
|
* Case mapping service object and functions using it.
|
|
*/
|
|
|
|
#include "unicode/utypes.h"
|
|
#include "unicode/brkiter.h"
|
|
#include "unicode/bytestream.h"
|
|
#include "unicode/casemap.h"
|
|
#include "unicode/edits.h"
|
|
#include "unicode/stringoptions.h"
|
|
#include "unicode/stringpiece.h"
|
|
#include "unicode/ubrk.h"
|
|
#include "unicode/uloc.h"
|
|
#include "unicode/ustring.h"
|
|
#include "unicode/ucasemap.h"
|
|
#if !UCONFIG_NO_BREAK_ITERATION
|
|
#include "unicode/utext.h"
|
|
#endif
|
|
#include "unicode/utf.h"
|
|
#include "unicode/utf8.h"
|
|
#include "unicode/utf16.h"
|
|
#include "bytesinkutil.h"
|
|
#include "cmemory.h"
|
|
#include "cstring.h"
|
|
#include "uassert.h"
|
|
#include "ucase.h"
|
|
#include "ucasemap_imp.h"
|
|
#include "ustr_imp.h"
|
|
|
|
U_NAMESPACE_USE
|
|
|
|
/* UCaseMap service object -------------------------------------------------- */
|
|
|
|
UCaseMap::UCaseMap(const char *localeID, uint32_t opts, UErrorCode *pErrorCode) :
|
|
#if !UCONFIG_NO_BREAK_ITERATION
|
|
iter(NULL),
|
|
#endif
|
|
caseLocale(UCASE_LOC_UNKNOWN), options(opts) {
|
|
ucasemap_setLocale(this, localeID, pErrorCode);
|
|
}
|
|
|
|
UCaseMap::~UCaseMap() {
|
|
#if !UCONFIG_NO_BREAK_ITERATION
|
|
delete iter;
|
|
#endif
|
|
}
|
|
|
|
U_CAPI UCaseMap * U_EXPORT2
|
|
ucasemap_open(const char *locale, uint32_t options, UErrorCode *pErrorCode) {
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return NULL;
|
|
}
|
|
UCaseMap *csm = new UCaseMap(locale, options, pErrorCode);
|
|
if(csm==NULL) {
|
|
*pErrorCode = U_MEMORY_ALLOCATION_ERROR;
|
|
return NULL;
|
|
} else if (U_FAILURE(*pErrorCode)) {
|
|
delete csm;
|
|
return NULL;
|
|
}
|
|
return csm;
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
ucasemap_close(UCaseMap *csm) {
|
|
delete csm;
|
|
}
|
|
|
|
U_CAPI const char * U_EXPORT2
|
|
ucasemap_getLocale(const UCaseMap *csm) {
|
|
return csm->locale;
|
|
}
|
|
|
|
U_CAPI uint32_t U_EXPORT2
|
|
ucasemap_getOptions(const UCaseMap *csm) {
|
|
return csm->options;
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
ucasemap_setLocale(UCaseMap *csm, const char *locale, UErrorCode *pErrorCode) {
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return;
|
|
}
|
|
if (locale != NULL && *locale == 0) {
|
|
csm->locale[0] = 0;
|
|
csm->caseLocale = UCASE_LOC_ROOT;
|
|
return;
|
|
}
|
|
|
|
int32_t length=uloc_getName(locale, csm->locale, (int32_t)sizeof(csm->locale), pErrorCode);
|
|
if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR || length==sizeof(csm->locale)) {
|
|
*pErrorCode=U_ZERO_ERROR;
|
|
/* we only really need the language code for case mappings */
|
|
length=uloc_getLanguage(locale, csm->locale, (int32_t)sizeof(csm->locale), pErrorCode);
|
|
}
|
|
if(length==sizeof(csm->locale)) {
|
|
*pErrorCode=U_BUFFER_OVERFLOW_ERROR;
|
|
}
|
|
if(U_SUCCESS(*pErrorCode)) {
|
|
csm->caseLocale = ucase_getCaseLocale(csm->locale);
|
|
} else {
|
|
csm->locale[0]=0;
|
|
csm->caseLocale = UCASE_LOC_ROOT;
|
|
}
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
ucasemap_setOptions(UCaseMap *csm, uint32_t options, UErrorCode *pErrorCode) {
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return;
|
|
}
|
|
csm->options=options;
|
|
}
|
|
|
|
/* UTF-8 string case mappings ----------------------------------------------- */
|
|
|
|
/* TODO(markus): Move to a new, separate utf8case.cpp file. */
|
|
|
|
namespace {
|
|
|
|
/* append a full case mapping result, see UCASE_MAX_STRING_LENGTH */
|
|
inline UBool
|
|
appendResult(int32_t cpLength, int32_t result, const UChar *s,
|
|
ByteSink &sink, uint32_t options, icu::Edits *edits, UErrorCode &errorCode) {
|
|
U_ASSERT(U_SUCCESS(errorCode));
|
|
|
|
/* decode the result */
|
|
if(result<0) {
|
|
/* (not) original code point */
|
|
if(edits!=NULL) {
|
|
edits->addUnchanged(cpLength);
|
|
}
|
|
if((options & U_OMIT_UNCHANGED_TEXT) == 0) {
|
|
ByteSinkUtil::appendCodePoint(cpLength, ~result, sink);
|
|
}
|
|
} else {
|
|
if(result<=UCASE_MAX_STRING_LENGTH) {
|
|
// string: "result" is the UTF-16 length
|
|
return ByteSinkUtil::appendChange(cpLength, s, result, sink, edits, errorCode);
|
|
} else {
|
|
ByteSinkUtil::appendCodePoint(cpLength, result, sink, edits);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// See unicode/utf8.h U8_APPEND_UNSAFE().
|
|
inline uint8_t getTwoByteLead(UChar32 c) { return (uint8_t)((c >> 6) | 0xc0); }
|
|
inline uint8_t getTwoByteTrail(UChar32 c) { return (uint8_t)((c & 0x3f) | 0x80); }
|
|
|
|
UChar32 U_CALLCONV
|
|
utf8_caseContextIterator(void *context, int8_t dir) {
|
|
UCaseContext *csc=(UCaseContext *)context;
|
|
UChar32 c;
|
|
|
|
if(dir<0) {
|
|
/* reset for backward iteration */
|
|
csc->index=csc->cpStart;
|
|
csc->dir=dir;
|
|
} else if(dir>0) {
|
|
/* reset for forward iteration */
|
|
csc->index=csc->cpLimit;
|
|
csc->dir=dir;
|
|
} else {
|
|
/* continue current iteration direction */
|
|
dir=csc->dir;
|
|
}
|
|
|
|
if(dir<0) {
|
|
if(csc->start<csc->index) {
|
|
U8_PREV((const uint8_t *)csc->p, csc->start, csc->index, c);
|
|
return c;
|
|
}
|
|
} else {
|
|
if(csc->index<csc->limit) {
|
|
U8_NEXT((const uint8_t *)csc->p, csc->index, csc->limit, c);
|
|
return c;
|
|
}
|
|
}
|
|
return U_SENTINEL;
|
|
}
|
|
|
|
/**
|
|
* caseLocale >= 0: Lowercases [srcStart..srcLimit[ but takes context [0..srcLength[ into account.
|
|
* caseLocale < 0: Case-folds [srcStart..srcLimit[.
|
|
*/
|
|
void toLower(int32_t caseLocale, uint32_t options,
|
|
const uint8_t *src, UCaseContext *csc, int32_t srcStart, int32_t srcLimit,
|
|
icu::ByteSink &sink, icu::Edits *edits, UErrorCode &errorCode) {
|
|
const int8_t *latinToLower;
|
|
if (caseLocale == UCASE_LOC_ROOT ||
|
|
(caseLocale >= 0 ?
|
|
!(caseLocale == UCASE_LOC_TURKISH || caseLocale == UCASE_LOC_LITHUANIAN) :
|
|
(options & _FOLD_CASE_OPTIONS_MASK) == U_FOLD_CASE_DEFAULT)) {
|
|
latinToLower = LatinCase::TO_LOWER_NORMAL;
|
|
} else {
|
|
latinToLower = LatinCase::TO_LOWER_TR_LT;
|
|
}
|
|
const UTrie2 *trie = ucase_getTrie();
|
|
int32_t prev = srcStart;
|
|
int32_t srcIndex = srcStart;
|
|
for (;;) {
|
|
// fast path for simple cases
|
|
int32_t cpStart;
|
|
UChar32 c;
|
|
for (;;) {
|
|
if (U_FAILURE(errorCode) || srcIndex >= srcLimit) {
|
|
c = U_SENTINEL;
|
|
break;
|
|
}
|
|
uint8_t lead = src[srcIndex++];
|
|
if (lead <= 0x7f) {
|
|
int8_t d = latinToLower[lead];
|
|
if (d == LatinCase::EXC) {
|
|
cpStart = srcIndex - 1;
|
|
c = lead;
|
|
break;
|
|
}
|
|
if (d == 0) { continue; }
|
|
ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 1 - prev,
|
|
sink, options, edits, errorCode);
|
|
char ascii = (char)(lead + d);
|
|
sink.Append(&ascii, 1);
|
|
if (edits != nullptr) {
|
|
edits->addReplace(1, 1);
|
|
}
|
|
prev = srcIndex;
|
|
continue;
|
|
} else if (lead < 0xe3) {
|
|
uint8_t t;
|
|
if (0xc2 <= lead && lead <= 0xc5 && srcIndex < srcLimit &&
|
|
(t = src[srcIndex] - 0x80) <= 0x3f) {
|
|
// U+0080..U+017F
|
|
++srcIndex;
|
|
c = ((lead - 0xc0) << 6) | t;
|
|
int8_t d = latinToLower[c];
|
|
if (d == LatinCase::EXC) {
|
|
cpStart = srcIndex - 2;
|
|
break;
|
|
}
|
|
if (d == 0) { continue; }
|
|
ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 2 - prev,
|
|
sink, options, edits, errorCode);
|
|
ByteSinkUtil::appendTwoBytes(c + d, sink);
|
|
if (edits != nullptr) {
|
|
edits->addReplace(2, 2);
|
|
}
|
|
prev = srcIndex;
|
|
continue;
|
|
}
|
|
} else if ((lead <= 0xe9 || lead == 0xeb || lead == 0xec) &&
|
|
(srcIndex + 2) <= srcLimit &&
|
|
U8_IS_TRAIL(src[srcIndex]) && U8_IS_TRAIL(src[srcIndex + 1])) {
|
|
// most of CJK: no case mappings
|
|
srcIndex += 2;
|
|
continue;
|
|
}
|
|
cpStart = --srcIndex;
|
|
U8_NEXT(src, srcIndex, srcLimit, c);
|
|
if (c < 0) {
|
|
// ill-formed UTF-8
|
|
continue;
|
|
}
|
|
uint16_t props = UTRIE2_GET16(trie, c);
|
|
if (UCASE_HAS_EXCEPTION(props)) { break; }
|
|
int32_t delta;
|
|
if (!UCASE_IS_UPPER_OR_TITLE(props) || (delta = UCASE_GET_DELTA(props)) == 0) {
|
|
continue;
|
|
}
|
|
ByteSinkUtil::appendUnchanged(src + prev, cpStart - prev,
|
|
sink, options, edits, errorCode);
|
|
ByteSinkUtil::appendCodePoint(srcIndex - cpStart, c + delta, sink, edits);
|
|
prev = srcIndex;
|
|
}
|
|
if (c < 0) {
|
|
break;
|
|
}
|
|
// slow path
|
|
const UChar *s;
|
|
if (caseLocale >= 0) {
|
|
csc->cpStart = cpStart;
|
|
csc->cpLimit = srcIndex;
|
|
c = ucase_toFullLower(c, utf8_caseContextIterator, csc, &s, caseLocale);
|
|
} else {
|
|
c = ucase_toFullFolding(c, &s, options);
|
|
}
|
|
if (c >= 0) {
|
|
ByteSinkUtil::appendUnchanged(src + prev, cpStart - prev,
|
|
sink, options, edits, errorCode);
|
|
appendResult(srcIndex - cpStart, c, s, sink, options, edits, errorCode);
|
|
prev = srcIndex;
|
|
}
|
|
}
|
|
ByteSinkUtil::appendUnchanged(src + prev, srcIndex - prev,
|
|
sink, options, edits, errorCode);
|
|
}
|
|
|
|
void toUpper(int32_t caseLocale, uint32_t options,
|
|
const uint8_t *src, UCaseContext *csc, int32_t srcLength,
|
|
icu::ByteSink &sink, icu::Edits *edits, UErrorCode &errorCode) {
|
|
const int8_t *latinToUpper;
|
|
if (caseLocale == UCASE_LOC_TURKISH) {
|
|
latinToUpper = LatinCase::TO_UPPER_TR;
|
|
} else {
|
|
latinToUpper = LatinCase::TO_UPPER_NORMAL;
|
|
}
|
|
const UTrie2 *trie = ucase_getTrie();
|
|
int32_t prev = 0;
|
|
int32_t srcIndex = 0;
|
|
for (;;) {
|
|
// fast path for simple cases
|
|
int32_t cpStart;
|
|
UChar32 c;
|
|
for (;;) {
|
|
if (U_FAILURE(errorCode) || srcIndex >= srcLength) {
|
|
c = U_SENTINEL;
|
|
break;
|
|
}
|
|
uint8_t lead = src[srcIndex++];
|
|
if (lead <= 0x7f) {
|
|
int8_t d = latinToUpper[lead];
|
|
if (d == LatinCase::EXC) {
|
|
cpStart = srcIndex - 1;
|
|
c = lead;
|
|
break;
|
|
}
|
|
if (d == 0) { continue; }
|
|
ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 1 - prev,
|
|
sink, options, edits, errorCode);
|
|
char ascii = (char)(lead + d);
|
|
sink.Append(&ascii, 1);
|
|
if (edits != nullptr) {
|
|
edits->addReplace(1, 1);
|
|
}
|
|
prev = srcIndex;
|
|
continue;
|
|
} else if (lead < 0xe3) {
|
|
uint8_t t;
|
|
if (0xc2 <= lead && lead <= 0xc5 && srcIndex < srcLength &&
|
|
(t = src[srcIndex] - 0x80) <= 0x3f) {
|
|
// U+0080..U+017F
|
|
++srcIndex;
|
|
c = ((lead - 0xc0) << 6) | t;
|
|
int8_t d = latinToUpper[c];
|
|
if (d == LatinCase::EXC) {
|
|
cpStart = srcIndex - 2;
|
|
break;
|
|
}
|
|
if (d == 0) { continue; }
|
|
ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 2 - prev,
|
|
sink, options, edits, errorCode);
|
|
ByteSinkUtil::appendTwoBytes(c + d, sink);
|
|
if (edits != nullptr) {
|
|
edits->addReplace(2, 2);
|
|
}
|
|
prev = srcIndex;
|
|
continue;
|
|
}
|
|
} else if ((lead <= 0xe9 || lead == 0xeb || lead == 0xec) &&
|
|
(srcIndex + 2) <= srcLength &&
|
|
U8_IS_TRAIL(src[srcIndex]) && U8_IS_TRAIL(src[srcIndex + 1])) {
|
|
// most of CJK: no case mappings
|
|
srcIndex += 2;
|
|
continue;
|
|
}
|
|
cpStart = --srcIndex;
|
|
U8_NEXT(src, srcIndex, srcLength, c);
|
|
if (c < 0) {
|
|
// ill-formed UTF-8
|
|
continue;
|
|
}
|
|
uint16_t props = UTRIE2_GET16(trie, c);
|
|
if (UCASE_HAS_EXCEPTION(props)) { break; }
|
|
int32_t delta;
|
|
if (UCASE_GET_TYPE(props) != UCASE_LOWER || (delta = UCASE_GET_DELTA(props)) == 0) {
|
|
continue;
|
|
}
|
|
ByteSinkUtil::appendUnchanged(src + prev, cpStart - prev,
|
|
sink, options, edits, errorCode);
|
|
ByteSinkUtil::appendCodePoint(srcIndex - cpStart, c + delta, sink, edits);
|
|
prev = srcIndex;
|
|
}
|
|
if (c < 0) {
|
|
break;
|
|
}
|
|
// slow path
|
|
csc->cpStart = cpStart;
|
|
csc->cpLimit = srcIndex;
|
|
const UChar *s;
|
|
c = ucase_toFullUpper(c, utf8_caseContextIterator, csc, &s, caseLocale);
|
|
if (c >= 0) {
|
|
ByteSinkUtil::appendUnchanged(src + prev, cpStart - prev,
|
|
sink, options, edits, errorCode);
|
|
appendResult(srcIndex - cpStart, c, s, sink, options, edits, errorCode);
|
|
prev = srcIndex;
|
|
}
|
|
}
|
|
ByteSinkUtil::appendUnchanged(src + prev, srcIndex - prev,
|
|
sink, options, edits, errorCode);
|
|
}
|
|
|
|
} // namespace
|
|
|
|
#if !UCONFIG_NO_BREAK_ITERATION
|
|
|
|
namespace {
|
|
|
|
constexpr uint8_t ACUTE_BYTE0 = u8"\u0301"[0];
|
|
|
|
constexpr uint8_t ACUTE_BYTE1 = u8"\u0301"[1];
|
|
|
|
/**
|
|
* Input: c is a letter I with or without acute accent.
|
|
* start is the index in src after c, and is less than segmentLimit.
|
|
* If a plain i/I is followed by a plain j/J,
|
|
* or an i/I with acute (precomposed or decomposed) is followed by a j/J with acute,
|
|
* then we output accordingly.
|
|
*
|
|
* @return the src index after the titlecased sequence, or the start index if no Dutch IJ
|
|
*/
|
|
int32_t maybeTitleDutchIJ(const uint8_t *src, UChar32 c, int32_t start, int32_t segmentLimit,
|
|
ByteSink &sink, uint32_t options, icu::Edits *edits, UErrorCode &errorCode) {
|
|
U_ASSERT(start < segmentLimit);
|
|
|
|
int32_t index = start;
|
|
bool withAcute = false;
|
|
|
|
// If the conditions are met, then the following variables tell us what to output.
|
|
int32_t unchanged1 = 0; // code units before the j, or the whole sequence (0..3)
|
|
bool doTitleJ = false; // true if the j needs to be titlecased
|
|
int32_t unchanged2 = 0; // after the j (0 or 1)
|
|
|
|
// next character after the first letter
|
|
UChar32 c2;
|
|
c2 = src[index++];
|
|
|
|
// Is the first letter an i/I with accent?
|
|
if (c == u'I') {
|
|
if (c2 == ACUTE_BYTE0 && index < segmentLimit && src[index++] == ACUTE_BYTE1) {
|
|
withAcute = true;
|
|
unchanged1 = 2; // ACUTE is 2 code units in UTF-8
|
|
if (index == segmentLimit) { return start; }
|
|
c2 = src[index++];
|
|
}
|
|
} else { // Í
|
|
withAcute = true;
|
|
}
|
|
|
|
// Is the next character a j/J?
|
|
if (c2 == u'j') {
|
|
doTitleJ = true;
|
|
} else if (c2 == u'J') {
|
|
++unchanged1;
|
|
} else {
|
|
return start;
|
|
}
|
|
|
|
// A plain i/I must be followed by a plain j/J.
|
|
// An i/I with acute must be followed by a j/J with acute.
|
|
if (withAcute) {
|
|
if ((index + 1) >= segmentLimit || src[index++] != ACUTE_BYTE0 || src[index++] != ACUTE_BYTE1) {
|
|
return start;
|
|
}
|
|
if (doTitleJ) {
|
|
unchanged2 = 2; // ACUTE is 2 code units in UTF-8
|
|
} else {
|
|
unchanged1 = unchanged1 + 2; // ACUTE is 2 code units in UTF-8
|
|
}
|
|
}
|
|
|
|
// There must not be another combining mark.
|
|
if (index < segmentLimit) {
|
|
int32_t cp;
|
|
int32_t i = index;
|
|
U8_NEXT(src, i, segmentLimit, cp);
|
|
uint32_t typeMask = U_GET_GC_MASK(cp);
|
|
if ((typeMask & U_GC_M_MASK) != 0) {
|
|
return start;
|
|
}
|
|
}
|
|
|
|
// Output the rest of the Dutch IJ.
|
|
ByteSinkUtil::appendUnchanged(src + start, unchanged1, sink, options, edits, errorCode);
|
|
start += unchanged1;
|
|
if (doTitleJ) {
|
|
ByteSinkUtil::appendCodePoint(1, u'J', sink, edits);
|
|
++start;
|
|
}
|
|
ByteSinkUtil::appendUnchanged(src + start, unchanged2, sink, options, edits, errorCode);
|
|
|
|
U_ASSERT(start + unchanged2 == index);
|
|
return index;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
U_CFUNC void U_CALLCONV
|
|
ucasemap_internalUTF8ToTitle(
|
|
int32_t caseLocale, uint32_t options, BreakIterator *iter,
|
|
const uint8_t *src, int32_t srcLength,
|
|
ByteSink &sink, icu::Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
if (!ustrcase_checkTitleAdjustmentOptions(options, errorCode)) {
|
|
return;
|
|
}
|
|
|
|
/* set up local variables */
|
|
UCaseContext csc=UCASECONTEXT_INITIALIZER;
|
|
csc.p=(void *)src;
|
|
csc.limit=srcLength;
|
|
int32_t prev=0;
|
|
UBool isFirstIndex=true;
|
|
|
|
/* titlecasing loop */
|
|
while(prev<srcLength) {
|
|
/* find next index where to titlecase */
|
|
int32_t index;
|
|
if(isFirstIndex) {
|
|
isFirstIndex=false;
|
|
index=iter->first();
|
|
} else {
|
|
index=iter->next();
|
|
}
|
|
if(index==UBRK_DONE || index>srcLength) {
|
|
index=srcLength;
|
|
}
|
|
|
|
/*
|
|
* Segment [prev..index[ into 3 parts:
|
|
* a) skipped characters (copy as-is) [prev..titleStart[
|
|
* b) first letter (titlecase) [titleStart..titleLimit[
|
|
* c) subsequent characters (lowercase) [titleLimit..index[
|
|
*/
|
|
if(prev<index) {
|
|
/* find and copy skipped characters [prev..titleStart[ */
|
|
int32_t titleStart=prev;
|
|
int32_t titleLimit=prev;
|
|
UChar32 c;
|
|
U8_NEXT(src, titleLimit, index, c);
|
|
if ((options&U_TITLECASE_NO_BREAK_ADJUSTMENT)==0) {
|
|
// Adjust the titlecasing index to the next cased character,
|
|
// or to the next letter/number/symbol/private use.
|
|
// Stop with titleStart<titleLimit<=index
|
|
// if there is a character to be titlecased,
|
|
// or else stop with titleStart==titleLimit==index.
|
|
UBool toCased = (options&U_TITLECASE_ADJUST_TO_CASED) != 0;
|
|
while (toCased ? UCASE_NONE==ucase_getType(c) : !ustrcase_isLNS(c)) {
|
|
titleStart=titleLimit;
|
|
if(titleLimit==index) {
|
|
break;
|
|
}
|
|
U8_NEXT(src, titleLimit, index, c);
|
|
}
|
|
if (prev < titleStart) {
|
|
if (!ByteSinkUtil::appendUnchanged(src+prev, titleStart-prev,
|
|
sink, options, edits, errorCode)) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(titleStart<titleLimit) {
|
|
/* titlecase c which is from [titleStart..titleLimit[ */
|
|
if(c>=0) {
|
|
csc.cpStart=titleStart;
|
|
csc.cpLimit=titleLimit;
|
|
const UChar *s;
|
|
c=ucase_toFullTitle(c, utf8_caseContextIterator, &csc, &s, caseLocale);
|
|
if (!appendResult(titleLimit-titleStart, c, s, sink, options, edits, errorCode)) {
|
|
return;
|
|
}
|
|
} else {
|
|
// Malformed UTF-8.
|
|
if (!ByteSinkUtil::appendUnchanged(src+titleStart, titleLimit-titleStart,
|
|
sink, options, edits, errorCode)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Special case Dutch IJ titlecasing */
|
|
if (titleLimit < index &&
|
|
caseLocale == UCASE_LOC_DUTCH) {
|
|
if (c < 0) {
|
|
c = ~c;
|
|
}
|
|
|
|
if (c == u'I' || c == u'Í') {
|
|
titleLimit = maybeTitleDutchIJ(src, c, titleLimit, index, sink, options, edits, errorCode);
|
|
}
|
|
}
|
|
|
|
/* lowercase [titleLimit..index[ */
|
|
if(titleLimit<index) {
|
|
if((options&U_TITLECASE_NO_LOWERCASE)==0) {
|
|
/* Normal operation: Lowercase the rest of the word. */
|
|
toLower(caseLocale, options,
|
|
src, &csc, titleLimit, index,
|
|
sink, edits, errorCode);
|
|
if(U_FAILURE(errorCode)) {
|
|
return;
|
|
}
|
|
} else {
|
|
/* Optionally just copy the rest of the word unchanged. */
|
|
if (!ByteSinkUtil::appendUnchanged(src+titleLimit, index-titleLimit,
|
|
sink, options, edits, errorCode)) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
prev=index;
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
U_NAMESPACE_BEGIN
|
|
namespace GreekUpper {
|
|
|
|
UBool isFollowedByCasedLetter(const uint8_t *s, int32_t i, int32_t length) {
|
|
while (i < length) {
|
|
UChar32 c;
|
|
U8_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.
|
|
}
|
|
|
|
// Keep this consistent with the UTF-16 version in ustrcase.cpp and the Java version in CaseMap.java.
|
|
void toUpper(uint32_t options,
|
|
const uint8_t *src, int32_t srcLength,
|
|
ByteSink &sink, Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
uint32_t state = 0;
|
|
for (int32_t i = 0; i < srcLength;) {
|
|
int32_t nextIndex = i;
|
|
UChar32 c;
|
|
U8_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.
|
|
int32_t nextNextIndex = nextIndex;
|
|
while (nextIndex < srcLength) {
|
|
UChar32 c2;
|
|
U8_NEXT(src, nextNextIndex, srcLength, c2);
|
|
uint32_t diacriticData = getDiacriticData(c2);
|
|
if (diacriticData != 0) {
|
|
data |= diacriticData;
|
|
if ((diacriticData & HAS_YPOGEGRAMMENI) != 0) {
|
|
++numYpogegrammeni;
|
|
}
|
|
nextIndex = nextNextIndex;
|
|
} 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;
|
|
if (edits == nullptr && (options & U_OMIT_UNCHANGED_TEXT) == 0) {
|
|
change = true; // common, simple usage
|
|
} else {
|
|
// Find out first whether we are changing the text.
|
|
U_ASSERT(0x370 <= upper && upper <= 0x3ff); // 2-byte UTF-8, main Greek block
|
|
change = (i + 2) > nextIndex ||
|
|
src[i] != getTwoByteLead(upper) || src[i + 1] != getTwoByteTrail(upper) ||
|
|
numYpogegrammeni > 0;
|
|
int32_t i2 = i + 2;
|
|
if ((data & HAS_EITHER_DIALYTIKA) != 0) {
|
|
change |= (i2 + 2) > nextIndex ||
|
|
src[i2] != (uint8_t)u8"\u0308"[0] ||
|
|
src[i2 + 1] != (uint8_t)u8"\u0308"[1];
|
|
i2 += 2;
|
|
}
|
|
if (addTonos) {
|
|
change |= (i2 + 2) > nextIndex ||
|
|
src[i2] != (uint8_t)u8"\u0301"[0] ||
|
|
src[i2 + 1] != (uint8_t)u8"\u0301"[1];
|
|
i2 += 2;
|
|
}
|
|
int32_t oldLength = nextIndex - i;
|
|
int32_t newLength = (i2 - i) + numYpogegrammeni * 2; // 2 bytes per U+0399
|
|
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) {
|
|
ByteSinkUtil::appendTwoBytes(upper, sink);
|
|
if ((data & HAS_EITHER_DIALYTIKA) != 0) {
|
|
sink.AppendU8(u8"\u0308", 2); // restore or add a dialytika
|
|
}
|
|
if (addTonos) {
|
|
sink.AppendU8(u8"\u0301", 2);
|
|
}
|
|
while (numYpogegrammeni > 0) {
|
|
sink.AppendU8(u8"\u0399", 2);
|
|
--numYpogegrammeni;
|
|
}
|
|
}
|
|
} else if(c>=0) {
|
|
const UChar *s;
|
|
c=ucase_toFullUpper(c, NULL, NULL, &s, UCASE_LOC_GREEK);
|
|
if (!appendResult(nextIndex - i, c, s, sink, options, edits, errorCode)) {
|
|
return;
|
|
}
|
|
} else {
|
|
// Malformed UTF-8.
|
|
if (!ByteSinkUtil::appendUnchanged(src+i, nextIndex-i,
|
|
sink, options, edits, errorCode)) {
|
|
return;
|
|
}
|
|
}
|
|
i = nextIndex;
|
|
state = nextState;
|
|
}
|
|
}
|
|
|
|
} // namespace GreekUpper
|
|
U_NAMESPACE_END
|
|
|
|
static void U_CALLCONV
|
|
ucasemap_internalUTF8ToLower(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_UNUSED
|
|
const uint8_t *src, int32_t srcLength,
|
|
icu::ByteSink &sink, icu::Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
UCaseContext csc=UCASECONTEXT_INITIALIZER;
|
|
csc.p=(void *)src;
|
|
csc.limit=srcLength;
|
|
toLower(
|
|
caseLocale, options,
|
|
src, &csc, 0, srcLength,
|
|
sink, edits, errorCode);
|
|
}
|
|
|
|
static void U_CALLCONV
|
|
ucasemap_internalUTF8ToUpper(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_UNUSED
|
|
const uint8_t *src, int32_t srcLength,
|
|
icu::ByteSink &sink, icu::Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
if (caseLocale == UCASE_LOC_GREEK) {
|
|
GreekUpper::toUpper(options, src, srcLength, sink, edits, errorCode);
|
|
} else {
|
|
UCaseContext csc=UCASECONTEXT_INITIALIZER;
|
|
csc.p=(void *)src;
|
|
csc.limit=srcLength;
|
|
toUpper(
|
|
caseLocale, options,
|
|
src, &csc, srcLength,
|
|
sink, edits, errorCode);
|
|
}
|
|
}
|
|
|
|
static void U_CALLCONV
|
|
ucasemap_internalUTF8Fold(int32_t /* caseLocale */, uint32_t options, UCASEMAP_BREAK_ITERATOR_UNUSED
|
|
const uint8_t *src, int32_t srcLength,
|
|
icu::ByteSink &sink, icu::Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
toLower(
|
|
-1, options,
|
|
src, nullptr, 0, srcLength,
|
|
sink, edits, errorCode);
|
|
}
|
|
|
|
void
|
|
ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
|
|
const char *src, int32_t srcLength,
|
|
UTF8CaseMapper *stringCaseMapper,
|
|
icu::ByteSink &sink, icu::Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
/* check argument values */
|
|
if (U_FAILURE(errorCode)) {
|
|
return;
|
|
}
|
|
if ((src == nullptr && srcLength != 0) || srcLength < -1) {
|
|
errorCode = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return;
|
|
}
|
|
|
|
// Get the string length.
|
|
if (srcLength == -1) {
|
|
srcLength = (int32_t)uprv_strlen((const char *)src);
|
|
}
|
|
|
|
if (edits != nullptr && (options & U_EDITS_NO_RESET) == 0) {
|
|
edits->reset();
|
|
}
|
|
stringCaseMapper(caseLocale, options, UCASEMAP_BREAK_ITERATOR
|
|
(const uint8_t *)src, srcLength, sink, edits, errorCode);
|
|
sink.Flush();
|
|
if (U_SUCCESS(errorCode)) {
|
|
if (edits != nullptr) {
|
|
edits->copyErrorTo(errorCode);
|
|
}
|
|
}
|
|
}
|
|
|
|
int32_t
|
|
ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
|
|
char *dest, int32_t destCapacity,
|
|
const char *src, int32_t srcLength,
|
|
UTF8CaseMapper *stringCaseMapper,
|
|
icu::Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
/* check argument values */
|
|
if(U_FAILURE(errorCode)) {
|
|
return 0;
|
|
}
|
|
if( destCapacity<0 ||
|
|
(dest==NULL && destCapacity>0) ||
|
|
(src==NULL && srcLength!=0) || srcLength<-1
|
|
) {
|
|
errorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
/* get the string length */
|
|
if(srcLength==-1) {
|
|
srcLength=(int32_t)uprv_strlen((const char *)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;
|
|
}
|
|
|
|
CheckedArrayByteSink sink(dest, destCapacity);
|
|
if (edits != nullptr && (options & U_EDITS_NO_RESET) == 0) {
|
|
edits->reset();
|
|
}
|
|
stringCaseMapper(caseLocale, options, UCASEMAP_BREAK_ITERATOR
|
|
(const uint8_t *)src, srcLength, sink, edits, errorCode);
|
|
sink.Flush();
|
|
if (U_SUCCESS(errorCode)) {
|
|
if (sink.Overflowed()) {
|
|
errorCode = U_BUFFER_OVERFLOW_ERROR;
|
|
} else if (edits != nullptr) {
|
|
edits->copyErrorTo(errorCode);
|
|
}
|
|
}
|
|
return u_terminateChars(dest, destCapacity, sink.NumberOfBytesAppended(), &errorCode);
|
|
}
|
|
|
|
/* public API functions */
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
ucasemap_utf8ToLower(const UCaseMap *csm,
|
|
char *dest, int32_t destCapacity,
|
|
const char *src, int32_t srcLength,
|
|
UErrorCode *pErrorCode) {
|
|
return ucasemap_mapUTF8(
|
|
csm->caseLocale, csm->options, UCASEMAP_BREAK_ITERATOR_NULL
|
|
dest, destCapacity,
|
|
src, srcLength,
|
|
ucasemap_internalUTF8ToLower, NULL, *pErrorCode);
|
|
}
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
ucasemap_utf8ToUpper(const UCaseMap *csm,
|
|
char *dest, int32_t destCapacity,
|
|
const char *src, int32_t srcLength,
|
|
UErrorCode *pErrorCode) {
|
|
return ucasemap_mapUTF8(
|
|
csm->caseLocale, csm->options, UCASEMAP_BREAK_ITERATOR_NULL
|
|
dest, destCapacity,
|
|
src, srcLength,
|
|
ucasemap_internalUTF8ToUpper, NULL, *pErrorCode);
|
|
}
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
ucasemap_utf8FoldCase(const UCaseMap *csm,
|
|
char *dest, int32_t destCapacity,
|
|
const char *src, int32_t srcLength,
|
|
UErrorCode *pErrorCode) {
|
|
return ucasemap_mapUTF8(
|
|
UCASE_LOC_ROOT, csm->options, UCASEMAP_BREAK_ITERATOR_NULL
|
|
dest, destCapacity,
|
|
src, srcLength,
|
|
ucasemap_internalUTF8Fold, NULL, *pErrorCode);
|
|
}
|
|
|
|
U_NAMESPACE_BEGIN
|
|
|
|
void CaseMap::utf8ToLower(
|
|
const char *locale, uint32_t options,
|
|
StringPiece src, ByteSink &sink, Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
ucasemap_mapUTF8(
|
|
ustrcase_getCaseLocale(locale), options, UCASEMAP_BREAK_ITERATOR_NULL
|
|
src.data(), src.length(),
|
|
ucasemap_internalUTF8ToLower, sink, edits, errorCode);
|
|
}
|
|
|
|
void CaseMap::utf8ToUpper(
|
|
const char *locale, uint32_t options,
|
|
StringPiece src, ByteSink &sink, Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
ucasemap_mapUTF8(
|
|
ustrcase_getCaseLocale(locale), options, UCASEMAP_BREAK_ITERATOR_NULL
|
|
src.data(), src.length(),
|
|
ucasemap_internalUTF8ToUpper, sink, edits, errorCode);
|
|
}
|
|
|
|
void CaseMap::utf8Fold(
|
|
uint32_t options,
|
|
StringPiece src, ByteSink &sink, Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
ucasemap_mapUTF8(
|
|
UCASE_LOC_ROOT, options, UCASEMAP_BREAK_ITERATOR_NULL
|
|
src.data(), src.length(),
|
|
ucasemap_internalUTF8Fold, sink, edits, errorCode);
|
|
}
|
|
|
|
int32_t CaseMap::utf8ToLower(
|
|
const char *locale, uint32_t options,
|
|
const char *src, int32_t srcLength,
|
|
char *dest, int32_t destCapacity, Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
return ucasemap_mapUTF8(
|
|
ustrcase_getCaseLocale(locale), options, UCASEMAP_BREAK_ITERATOR_NULL
|
|
dest, destCapacity,
|
|
src, srcLength,
|
|
ucasemap_internalUTF8ToLower, edits, errorCode);
|
|
}
|
|
|
|
int32_t CaseMap::utf8ToUpper(
|
|
const char *locale, uint32_t options,
|
|
const char *src, int32_t srcLength,
|
|
char *dest, int32_t destCapacity, Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
return ucasemap_mapUTF8(
|
|
ustrcase_getCaseLocale(locale), options, UCASEMAP_BREAK_ITERATOR_NULL
|
|
dest, destCapacity,
|
|
src, srcLength,
|
|
ucasemap_internalUTF8ToUpper, edits, errorCode);
|
|
}
|
|
|
|
int32_t CaseMap::utf8Fold(
|
|
uint32_t options,
|
|
const char *src, int32_t srcLength,
|
|
char *dest, int32_t destCapacity, Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
return ucasemap_mapUTF8(
|
|
UCASE_LOC_ROOT, options, UCASEMAP_BREAK_ITERATOR_NULL
|
|
dest, destCapacity,
|
|
src, srcLength,
|
|
ucasemap_internalUTF8Fold, edits, errorCode);
|
|
}
|
|
|
|
U_NAMESPACE_END
|