override fun feed()

in lib/src/main/kotlin/org/jetbrains/zip/signer/datasource/SeekableByteChannelDataSource.kt [41:64]

• 24 lines of code
• 5 McCabe index (conditional complexity)

    override fun feed(writableByteChannel: WritableByteChannel, offset: Long, size: Long) {
        val sourceSize = size()
        checkChunkValid(offset, size, sourceSize)
        if (size == 0L) return
        var chunkOffsetInFile = this.offset + offset
        var remaining = size
        val buf = ByteBuffer.allocateDirect(remaining.toInt().coerceAtMost(MAX_READ_CHUNK_SIZE))
        while (remaining > 0) {
            val chunkSize = remaining.coerceAtMost(buf.capacity().toLong()).toInt()
            var chunkRemaining = chunkSize
            buf.limit(chunkSize)
            channel.position(chunkOffsetInFile)
            while (chunkRemaining > 0) {
                val read = channel.read(buf)
                if (read < 0) throw IOException("Unexpected EOF encountered")
                chunkRemaining -= read
            }
            buf.flip()
            writableByteChannel.write(buf)
            buf.clear()
            chunkOffsetInFile += chunkSize.toLong()
            remaining -= chunkSize.toLong()
        }
    }