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package java.io
import java.nio.CharBuffer
abstract class Reader private[this] (_lock: Option[Object])
extends Readable with Closeable {
protected val lock = _lock.getOrElse(this)
protected def this(lock: Object) = this(Some(lock))
protected def this() = this(None)
def read(target: CharBuffer): Int = {
if (!target.hasRemaining) 0
else if (target.hasArray) {
val charsRead = read(target.array,
target.position + target.arrayOffset, target.remaining)
if (charsRead != -1)
target.position(target.position + charsRead)
charsRead
} else {
val buf = new Array[Char](target.remaining)
val charsRead = read(buf)
if (charsRead != -1)
target.put(buf, 0, charsRead)
charsRead
}
}
def read(): Int = {
val buf = new Array[Char](1)
if (read(buf) == -1) -1
else buf(0).toInt
}
def read(cbuf: Array[Char]): Int =
read(cbuf, 0, cbuf.length)
def read(cbuf: Array[Char], off: Int, len: Int): Int
def skip(n: Long): Long = {
if (n < 0)
throw new IllegalArgumentException("Cannot skip negative amount")
else if (read() == -1) 0
else 1
}
def ready(): Boolean = false
def markSupported(): Boolean = false
def mark(readAheadLimit: Int): Unit =
throw new IOException("Mark not supported")
def reset(): Unit =
throw new IOException("Reset not supported")
def close(): Unit
}
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