File	Doc	Category	Size	Date	Package
ReaderInputStream.java	API Doc	Apache Ant 1.70	5778	Wed Dec 13 06:16:20 GMT 2006	org.apache.tools.ant.util

ReaderInputStream

• java.lang.Object
  • java.io.InputStream

Fields Summary
private Reader	in Source Reader
private String	encoding
private byte[]	slack
private int	begin

Constructors Summary
public ReaderInputStream(Reader reader) Construct a ReaderInputStream for the specified Reader. param reader Reader. Must not be null. in = reader;
public ReaderInputStream(Reader reader, String encoding) Construct a ReaderInputStream for the specified Reader, with the specified encoding. param reader non-null Reader. param encoding non-null String encoding. this(reader); if (encoding == null) { throw new IllegalArgumentException("encoding must not be null"); } else { this.encoding = encoding; }

Methods Summary
public synchronized int	available() return the current number of bytes ready for reading exception IOException if an error occurs if (in == null) { throw new IOException("Stream Closed"); } if (slack != null) { return slack.length - begin; } if (in.ready()) { return 1; } else { return 0; }
public synchronized void	close() Closes the Stringreader. exception IOException if the original StringReader fails to be closed if (in != null) { in.close(); slack = null; in = null; }
public synchronized void	mark(int limit) Marks the read limit of the StringReader. param limit the maximum limit of bytes that can be read before the mark position becomes invalid try { in.mark(limit); } catch (IOException ioe) { throw new RuntimeException(ioe.getMessage()); }
public boolean	markSupported() return false - mark is not supported return false; // would be imprecise
public synchronized int	read() Reads from the Reader, returning the same value. return the value of the next character in the Reader. exception IOException if the original Reader fails to be read if (in == null) { throw new IOException("Stream Closed"); } byte result; if (slack != null && begin < slack.length) { result = slack[begin]; if (++begin == slack.length) { slack = null; } } else { byte[] buf = new byte[1]; if (read(buf, 0, 1) <= 0) { return -1; } else { result = buf[0]; } } return result & 0xFF;
public synchronized int	read(byte[] b, int off, int len) Reads from the Reader into a byte array param b the byte array to read into param off the offset in the byte array param len the length in the byte array to fill return the actual number read into the byte array, -1 at the end of the stream exception IOException if an error occurs if (in == null) { throw new IOException("Stream Closed"); } if (len == 0) { return 0; } while (slack == null) { char[] buf = new char[len]; // might read too much int n = in.read(buf); if (n == -1) { return -1; } if (n > 0) { slack = new String(buf, 0, n).getBytes(encoding); begin = 0; } } if (len > slack.length - begin) { len = slack.length - begin; } System.arraycopy(slack, begin, b, off, len); if ((begin += len) >= slack.length) { slack = null; } return len;
public synchronized void	reset() Resets the StringReader. exception IOException if the StringReader fails to be reset if (in == null) { throw new IOException("Stream Closed"); } slack = null; in.reset();