Comments (3)
A varint is somewhat like utf8: all "wire-bytes" but the last have the highest bit set, to indicate "more is coming". Hence the "wiresize" of a varint representation is the "payload" divided into chunks of 7 bits.
For reference this is what an actual varint encoder looks like: https://golang.org/src/encoding/binary/varint.go?s=1611:1652#L31
func PutUvarint(buf []byte, x uint64) int {
i := 0
for x >= 0x80 {
buf[i] = byte(x) | 0x80
x >>= 7
i++
}
buf[i] = byte(x)
return i + 1
}
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Got it. Thanks for clearing that up.
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@pfac just a note that this kind of varint encoding also goes by the name LEB128, so there might already be an implementation available for your language of choice.
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