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Revert part of #2492 and replace it with mozilla one.

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this fixes some numbers can't be selected individually in my builds.
This commit is contained in:
roytam1 2024-06-08 12:05:16 +08:00
commit ff8673e87e
2 changed files with 35 additions and 14 deletions
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36
intl/unicharutil/util/nsUnicodeProperties.cpp
View file

@ -153,7 +153,9 @@ IsClusterExtender(uint32_t aCh, uint8_t aCategory)
return ((aCategory >= HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK &&
aCategory <= HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK) ||
(aCh >= 0x200c && aCh <= 0x200d) || // ZWJ, ZWNJ
(aCh >= 0xff9e && aCh <= 0xff9f)); // katakana sound marks
(aCh >= 0xff9e && aCh <= 0xff9f) || // katakana sound marks
(aCh >= 0x1F3FB && aCh <= 0x1F3FF) || // fitzpatrick skin tone modifiers
(aCh >= 0xe0020 && aCh <= 0xe007f)); // emoji (flag) tag characters
}
enum HSType {
@ -224,8 +226,25 @@ ClusterIterator::Next()
}
}
const uint32_t kVS16 = 0xfe0f;
const uint32_t kZWJ = 0x200d;
// UTF-16 surrogate values for Fitzpatrick type modifiers
const uint32_t kFitzpatrickHigh = 0xD83C;
const uint32_t kFitzpatrickLowFirst = 0xDFFB;
const uint32_t kFitzpatrickLowLast = 0xDFFF;
bool baseIsEmoji = (GetEmojiPresentation(ch) == EmojiDefault) ||
(GetEmojiPresentation(ch) == TextDefault &&
((mPos < mLimit && *mPos == kVS16) ||
(mPos + 1 < mLimit &&
*mPos == kFitzpatrickHigh &&
*(mPos + 1) >= kFitzpatrickLowFirst &&
*(mPos + 1) <= kFitzpatrickLowLast)));
bool prevWasZwj = false;
while (mPos < mLimit) {
ch = *mPos;
size_t chLen = 1;
// Check for surrogate pairs; note that isolated surrogates will just
// be treated as generic (non-cluster-extending) characters here,
@ -233,16 +252,21 @@ ClusterIterator::Next()
if (NS_IS_HIGH_SURROGATE(ch) && mPos < mLimit - 1 &&
NS_IS_LOW_SURROGATE(*(mPos + 1))) {
ch = SURROGATE_TO_UCS4(ch, *(mPos + 1));
chLen = 2;
}
if (!IsClusterExtender(ch)) {
bool extendCluster = IsClusterExtender(ch) ||
(baseIsEmoji && prevWasZwj &&
((GetEmojiPresentation(ch) == EmojiDefault) ||
(GetEmojiPresentation(ch) == TextDefault &&
mPos + chLen < mLimit &&
*(mPos + chLen) == kVS16)));
if (!extendCluster) {
break;
}
mPos++;
if (!IS_IN_BMP(ch)) {
mPos++;
}
prevWasZwj = (ch == kZWJ);
mPos += chLen;
}
NS_ASSERTION(mText < mPos && mPos <= mLimit,

13
intl/unicharutil/util/nsUnicodeProperties.h
View file

@ -180,17 +180,14 @@ IsDefaultIgnorable(uint32_t aCh)
inline EmojiPresentation
GetEmojiPresentation(uint32_t aCh)
{
if (u_hasBinaryProperty(aCh, UCHAR_EMOJI_COMPONENT)) {
return EmojiComponent;
if (!u_hasBinaryProperty(aCh, UCHAR_EMOJI)) {
return TextOnly;
}
if (u_hasBinaryProperty(aCh, UCHAR_EMOJI) &&
!u_hasBinaryProperty(aCh, UCHAR_EMOJI_PRESENTATION)) {
return TextDefault;
}
if (u_hasBinaryProperty(aCh, UCHAR_EXTENDED_PICTOGRAPHIC)) {
if (u_hasBinaryProperty(aCh, UCHAR_EMOJI_PRESENTATION)) {
return EmojiDefault;
}
return TextOnly;
return TextDefault;
}
// returns the simplified Gen Category as defined in nsIUGenCategory