Source Code Cross Referenced for httpChunkedOutputStream.java in  » Search-Engine » yacy » de » anomic » http » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Search Engine » yacy » de.anomic.http 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        //httpChunkedOutputStream.java 
002:        //-------------------------------------
003:        //part of YACY
004:        //(C) by Michael Peter Christen; mc@anomic.de
005:        //first published on http://www.anomic.de
006:        //Frankfurt, Germany, 2004
007:        //
008:        //This file ist contributed by Martin Thelian
009:        //last major change: 05.09.2005
010:        //
011:        //This program is free software; you can redistribute it and/or modify
012:        //it under the terms of the GNU General Public License as published by
013:        //the Free Software Foundation; either version 2 of the License, or
014:        //(at your option) any later version.
015:        //
016:        //This program is distributed in the hope that it will be useful,
017:        //but WITHOUT ANY WARRANTY; without even the implied warranty of
018:        //MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
019:        //GNU General Public License for more details.
020:        //
021:        //You should have received a copy of the GNU General Public License
022:        //along with this program; if not, write to the Free Software
023:        //Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
024:        //
025:        //Using this software in any meaning (reading, learning, copying, compiling,
026:        //running) means that you agree that the Author(s) is (are) not responsible
027:        //for cost, loss of data or any harm that may be caused directly or indirectly
028:        //by usage of this softare or this documentation. The usage of this software
029:        //is on your own risk. The installation and usage (starting/running) of this
030:        //software may allow other people or application to access your computer and
031:        //any attached devices and is highly dependent on the configuration of the
032:        //software which must be done by the user of the software; the author(s) is
033:        //(are) also not responsible for proper configuration and usage of the
034:        //software, even if provoked by documentation provided together with
035:        //the software.
036:        //
037:        //Any changes to this file according to the GPL as documented in the file
038:        //gpl.txt aside this file in the shipment you received can be done to the
039:        //lines that follows this copyright notice here, but changes must not be
040:        //done inside the copyright notive above. A re-distribution must contain
041:        //the intact and unchanged copyright notice.
042:        //Contributions and changes to the program code must be marked as such.
043:
044:        package de.anomic.http;
045:
046:        import java.io.FilterOutputStream;
047:        import java.io.IOException;
048:        import java.io.InputStream;
049:        import java.io.OutputStream;
050:
051:        import de.anomic.server.serverByteBuffer;
052:        import de.anomic.server.serverCore;
053:        import de.anomic.server.serverFileUtils;
054:
055:        public final class httpChunkedOutputStream extends FilterOutputStream {
056:            private boolean finished = false;
057:
058:            public httpChunkedOutputStream(OutputStream out) {
059:                super (out);
060:            }
061:
062:            public void close() throws IOException {
063:                if (!this .finished)
064:                    this .finish();
065:                this .out.close();
066:            }
067:
068:            public void finish() throws IOException {
069:                if (!this .finished) {
070:                    this .out.write((byte) 48);
071:                    this .out.write(serverCore.CRLF);
072:                    this .out.write(serverCore.CRLF);
073:                    this .out.flush();
074:                    this .finished = true;
075:                }
076:            }
077:
078:            public void write(byte[] b) throws IOException {
079:                if (this .finished)
080:                    throw new IOException(
081:                            "ChunkedOutputStream already finalized.");
082:                if (b.length == 0)
083:                    return;
084:
085:                this .out.write(Integer.toHexString(b.length).getBytes());
086:                this .out.write(serverCore.CRLF);
087:                this .out.write(b);
088:                this .out.write(serverCore.CRLF);
089:                this .out.flush();
090:            }
091:
092:            public void write(byte[] b, int off, int len) throws IOException {
093:                if (this .finished)
094:                    throw new IOException(
095:                            "ChunkedOutputStream already finalized.");
096:                if (len == 0)
097:                    return;
098:
099:                this .out.write(Integer.toHexString(len).getBytes());
100:                this .out.write(serverCore.CRLF);
101:                this .out.write(b, off, len);
102:                this .out.write(serverCore.CRLF);
103:                this .out.flush();
104:            }
105:
106:            public void write(serverByteBuffer b, int off, int len)
107:                    throws IOException {
108:                if (this .finished)
109:                    throw new IOException(
110:                            "ChunkedOutputStream already finalized.");
111:                if (len == 0)
112:                    return;
113:
114:                this .out.write(Integer.toHexString(len).getBytes());
115:                this .out.write(serverCore.CRLF);
116:                this .out.write(b.getBytes(off, len));
117:                this .out.write(serverCore.CRLF);
118:                this .out.flush();
119:            }
120:
121:            public void write(InputStream b) throws IOException {
122:                if (this .finished)
123:                    throw new IOException(
124:                            "ChunkedOutputStream already finalized.");
125:                int len = b.available();
126:                if (len == 0)
127:                    return;
128:
129:                this .out.write(Integer.toHexString(len).getBytes());
130:                this .out.write(serverCore.CRLF);
131:                serverFileUtils.copy(b, out, len);
132:                this .out.write(serverCore.CRLF);
133:                this .out.flush();
134:            }
135:
136:            public void write(int b) throws IOException {
137:                if (this .finished)
138:                    throw new IOException(
139:                            "ChunkedOutputStream already finalized.");
140:
141:                this .out.write("1".getBytes());
142:                this.out.write(serverCore.CRLF);
143:                this.out.write(b);
144:                this.out.write(serverCore.CRLF);
145:                this.out.flush();
146:            }
147:        }
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