ktor-io/io.ktor.utils.io.core.internal/decodeUTF8

decodeUTF8

inline fun IoBuffer.decodeUTF8(consumer: (Char) -> Boolean): Int
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inline fun Buffer.decodeUTF8(consumer: (Char) -> Boolean): Int
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Decodes all the bytes to utf8 applying every character on consumer until or consumer return false. If a consumer returned false then a character will be pushed back (including all surrogates will be pushed back as well) and decodeUTF8 returns -1

Return

number of bytes required to decode incomplete utf8 character or 0 if all bytes were processed or -1 if consumer rejected loop