/**
* Mark the present position in the stream.
*
* @exception IOException If an I/O error occurs
*/
public void mark(int readAheadLimit) throws IOException {
ensureOpen();
if (in.markSupported()) {
in.mark(readAheadLimit);
} else {
throw new IOException(
/* #ifdef VERBOSE_EXCEPTIONS */
/// skipped "mark() not supported"
/* #endif */
);
}
}
/** Tell whether this stream supports the mark() operation. */
public boolean markSupported() {
if (in == null) {
return false;
}
return in.markSupported();
}
/**
* Tell whether this stream is ready to be read.
*
* @exception IOException If an I/O error occurs
*/
public boolean ready() throws IOException {
ensureOpen();
return in.ready();
}
/**
* Skip characters.
*
* @exception IOException If an I/O error occurs
*/
public long skip(long n) throws IOException {
ensureOpen();
return in.skip(n);
}
/**
* Read characters into a portion of an array.
*
* @exception IOException If an I/O error occurs
*/
public int read(char cbuf[], int off, int len) throws IOException {
ensureOpen();
if ((off < 0)
|| (off > cbuf.length)
|| (len < 0)
|| ((off + len) > cbuf.length)
|| ((off + len) < 0)) {
throw new IndexOutOfBoundsException();
} else if (len == 0) {
return 0;
}
return in.read(cbuf, off, len);
}
/**
* Read a single character.
*
* @exception IOException If an I/O error occurs
*/
public int read() throws IOException {
ensureOpen();
return in.read();
}
/**
* Close the stream.
*
* @exception IOException If an I/O error occurs
*/
public void close() throws IOException {
if (in != null) {
in.close();
in = null;
}
}
/**
* Reset the stream.
*
* @exception IOException If an I/O error occurs
*/
public void reset() throws IOException {
ensureOpen();
in.reset();
}