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28 package org.apache.http.impl.io;
29
30 import java.io.IOException;
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32 import org.apache.http.Header;
33 import org.apache.http.HeaderIterator;
34 import org.apache.http.HttpException;
35 import org.apache.http.HttpMessage;
36 import org.apache.http.io.HttpMessageWriter;
37 import org.apache.http.io.SessionOutputBuffer;
38 import org.apache.http.message.BasicLineFormatter;
39 import org.apache.http.message.LineFormatter;
40 import org.apache.http.params.HttpParams;
41 import org.apache.http.util.Args;
42 import org.apache.http.util.CharArrayBuffer;
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50 @SuppressWarnings("deprecation")
51 public abstract class AbstractMessageWriter<T extends HttpMessage> implements HttpMessageWriter<T> {
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53 protected final SessionOutputBuffer sessionBuffer;
54 protected final CharArrayBuffer lineBuf;
55 protected final LineFormatter lineFormatter;
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67 @Deprecated
68 public AbstractMessageWriter(final SessionOutputBuffer buffer,
69 final LineFormatter formatter,
70 final HttpParams params) {
71 super();
72 Args.notNull(buffer, "Session input buffer");
73 this.sessionBuffer = buffer;
74 this.lineBuf = new CharArrayBuffer(128);
75 this.lineFormatter = (formatter != null) ? formatter : BasicLineFormatter.INSTANCE;
76 }
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87 public AbstractMessageWriter(
88 final SessionOutputBuffer buffer,
89 final LineFormatter formatter) {
90 super();
91 this.sessionBuffer = Args.notNull(buffer, "Session input buffer");
92 this.lineFormatter = (formatter != null) ? formatter : BasicLineFormatter.INSTANCE;
93 this.lineBuf = new CharArrayBuffer(128);
94 }
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103 protected abstract void writeHeadLine(T message) throws IOException;
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105 @Override
106 public void write(final T message) throws IOException, HttpException {
107 Args.notNull(message, "HTTP message");
108 writeHeadLine(message);
109 for (final HeaderIterator it = message.headerIterator(); it.hasNext(); ) {
110 final Header header = it.nextHeader();
111 this.sessionBuffer.writeLine
112 (lineFormatter.formatHeader(this.lineBuf, header));
113 }
114 this.lineBuf.clear();
115 this.sessionBuffer.writeLine(this.lineBuf);
116 }
117
118 }