/**
* 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(const UCaseMap *csm,
UChar *dest, int32_t destCapacity,
const UChar *src, int32_t srcLength,
UErrorCode *pErrorCode) {
int32_t locCache = UCASE_LOC_GREEK;
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(csm->csp, 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(csm->csp, 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;
}
}
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) {
*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
} else {
const UChar *s;
UChar32 c2 = 0;
c=ucase_toFullUpper(csm->csp, c, NULL, NULL, &s, csm->locale, &locCache);
if((destIndex<destCapacity) && (c<0 ? (c2=~c)<=0xffff : UCASE_MAX_STRING_LENGTH<c && (c2=c)<=0xffff)) {
/* fast path version of appendResult() for BMP results */
dest[destIndex++]=(UChar)c2;
} else {
destIndex=appendResult(dest, destIndex, destCapacity, c, s);
if(destIndex<0) {
*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
}
}
i = nextIndex;
state = nextState;
}
if(destIndex>destCapacity) {
*pErrorCode=U_BUFFER_OVERFLOW_ERROR;
}
return destIndex;
}
// 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.Append(u8"\u0308", 2); // restore or add a dialytika
}
if (addTonos) {
sink.Append(u8"\u0301", 2);
}
while (numYpogegrammeni > 0) {
sink.Append(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;
}
}
