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fix: numbers are not emoji contrary to what unicode claims

This commit is contained in:
infi 2026-07-29 05:21:04 +02:00
parent 4df95b8052
commit 771cef8e80
1 changed files with 23 additions and 1 deletions
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24
app/src/main/java/chat/stoat/internals/text/Gigamoji.kt
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@ -2,6 +2,11 @@ package chat.stoat.internals.text
private val STRING_IS_CUSTOM_EMOTES_REGEX = Regex("(?::[0-9A-HJKMNP-TV-Z]{26}:|\\s)+")
private val CUSTOM_EMOTE_REGEX = Regex(":[0-9A-HJKMNP-TV-Z]{26}:")
private const val VARIATION_SELECTOR_16 = 0xFE0F
private const val COMBINING_ENCLOSING_KEYCAP = 0x20E3
private fun isKeycapBase(codepoint: Int): Boolean =
codepoint == '#'.code || codepoint == '*'.code || codepoint in '0'.code..'9'.code
sealed class GigamojiState {
object None : GigamojiState()
@ -19,12 +24,28 @@ object Gigamoji {
val content = unfilteredContent.replace(STRING_IS_CUSTOM_EMOTES_REGEX, "")
if (content.isBlank()) return 0
val codepoints = content.codePoints().toArray()
var count = 0
var lastWasZwj = false
for (codepoint in content.codePoints()) {
var index = 0
while (index < codepoints.size) {
val codepoint = codepoints[index]
when {
Character.isWhitespace(codepoint) -> lastWasZwj = false
codepoint == 0x200D -> lastWasZwj = true
isKeycapBase(codepoint) -> {
val selectorOffset =
if (codepoints.getOrNull(index + 1) == VARIATION_SELECTOR_16) 1 else 0
if (codepoints.getOrNull(index + selectorOffset + 1) !=
COMBINING_ENCLOSING_KEYCAP
) {
return null
}
if (!lastWasZwj) count++
lastWasZwj = false
index += selectorOffset + 1
}
codepoint == 0xFE0F || codepoint == 0xFE0E || codepoint == 0x20E3 -> Unit
codepoint in PUA_MIN..PUA_MAX -> Unit
codepoint in 0x1F3FB..0x1F3FF -> lastWasZwj = false
@ -34,6 +55,7 @@ object Gigamoji {
}
else -> return null
}
index++
}
return count
}