| 1 | package dmg.util; |
| 2 | |
| 3 | import java.io.Writer; |
| 4 | |
| 5 | /** |
| 6 | * Buffered LineWriter adaptor implementing the Writer interface. |
| 7 | */ |
| 8 | public class BufferedLineWriter |
| 9 | extends Writer |
| 10 | { |
| 11 | private final LineWriter _writer; |
| 12 | private final StringBuilder _buffer; |
| 13 | |
| 14 | public BufferedLineWriter(LineWriter writer) |
| 15 | { |
| 16 | _writer = writer; |
| 17 | _buffer = new StringBuilder(); |
| 18 | } |
| 19 | |
| 20 | public void close() |
| 21 | { |
| 22 | flush(); |
| 23 | } |
| 24 | |
| 25 | private void flushCompletedLines() |
| 26 | { |
| 27 | int i; |
| 28 | while ((i = _buffer.indexOf("\n")) > -1) { |
| 29 | _writer.writeLine(_buffer.substring(0, i)); |
| 30 | _buffer.delete(0, i + 1); |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | public void flush() |
| 35 | { |
| 36 | flushCompletedLines(); |
| 37 | if (_buffer.length() > 0) { |
| 38 | _writer.writeLine(_buffer.toString()); |
| 39 | _buffer.delete(0, _buffer.length()); |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | public void write(char[] cbuf, int off, int len) |
| 44 | { |
| 45 | _buffer.append(cbuf, off, len); |
| 46 | flushCompletedLines(); |
| 47 | } |
| 48 | } |