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15 * KIND, either express or implied. See the License for the *
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19
20 package org.apache.james.mime4j.codec;
21
22 import java.io.FilterOutputStream;
23 import java.io.IOException;
24 import java.io.OutputStream;
25
26 /**
27 * Performs Quoted-Printable encoding on an underlying stream.
28 */
29 public class QuotedPrintableOutputStream extends FilterOutputStream {
30
31 private QuotedPrintableEncoder encoder;
32 private boolean closed = false;
33
34 public QuotedPrintableOutputStream(OutputStream out, boolean binary) {
35 super(out);
36 encoder = new QuotedPrintableEncoder(CodecUtil.DEFAULT_ENCODING_BUFFER_SIZE, binary);
37 encoder.initEncoding(out);
38 }
39
40 @Override
41 public void close() throws IOException {
42 if (closed)
43 return;
44
45 try {
46 encoder.completeEncoding();
47 // do not close the wrapped stream
48 } finally {
49 closed = true;
50 }
51 }
52
53 @Override
54 public void flush() throws IOException {
55 encoder.flushOutput();
56 }
57
58 @Override
59 public void write(int b) throws IOException {
60 this.write(new byte[] { (byte) b }, 0, 1);
61 }
62
63 @Override
64 public void write(byte[] b, int off, int len) throws IOException {
65 if (closed) {
66 throw new IOException("QuotedPrintableOutputStream has been closed");
67 }
68
69 encoder.encodeChunk(b, off, len);
70 }
71
72 }