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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
* |
* | PlantUML : a free UML diagram generator
* |
* +=======================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
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* Project Info: https://plantuml.com
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* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License V2.
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* THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
* LICENSE ("AGREEMENT"). [GNU General Public License V2]
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* ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES
* RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
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* You may obtain a copy of the License at
*
* https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
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* Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
* are owned by the author of their corresponding sources code (that is, their
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* this GPL v2 license.
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* The generated images can then be used without any reference to the GPL v2 license.
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* although this will be appreciated by the PlantUML team.
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*
* This is the IGY distribution (Install GraphViz by Yourself).
* You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
* (see https://plantuml.com/graphviz-dot )
*
* Icons provided by OpenIconic : https://useiconic.com/open
* Archimate sprites provided by Archi : http://www.archimatetool.com
* Stdlib AWS provided by https://github.com/milo-minderbinder/AWS-PlantUML
* Stdlib Icons provided https://github.com/tupadr3/plantuml-icon-font-sprites
* ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
* ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
* CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
* Brotli (c) by the Brotli Authors https://github.com/google/brotli
* Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
* Twemoji (c) by Twitter at https://twemoji.twitter.com/
*
*/
package net.sourceforge.plantuml.brotli;
import java.io.IOException;
import java.io.InputStream;
/**
* {@link InputStream} decorator that decompresses brotli data.
*
*
* Not thread-safe.
*/
public class BrotliInputStream extends InputStream {
public static final int DEFAULT_INTERNAL_BUFFER_SIZE = 16384;
/**
* Internal buffer used for efficient byte-by-byte reading.
*/
private byte[] buffer;
/**
* Number of decoded but still unused bytes in internal buffer.
*/
private int remainingBufferBytes;
/**
* Next unused byte offset.
*/
private int bufferOffset;
/**
* Decoder state.
*/
private final State state = new State();
/**
* Creates a {@link InputStream} wrapper that decompresses brotli data.
*
*
* For byte-by-byte reading ({@link #read()}) internal buffer with
* {@link #DEFAULT_INTERNAL_BUFFER_SIZE} size is allocated and used.
*
*
* Will block the thread until first kilobyte of data of source is available.
*
* @param source underlying data source
* @throws IOException in case of corrupted data or source stream problems
*/
public BrotliInputStream(InputStream source) throws IOException {
this(source, DEFAULT_INTERNAL_BUFFER_SIZE);
}
/**
* Creates a {@link InputStream} wrapper that decompresses brotli data.
*
*
* For byte-by-byte reading ({@link #read()}) internal buffer of specified size
* is allocated and used.
*
*
* Will block the thread until first kilobyte of data of source is available.
*
* @param source compressed data source
* @param byteReadBufferSize size of internal buffer used in case of
* byte-by-byte reading
* @throws IOException in case of corrupted data or source stream problems
*/
public BrotliInputStream(InputStream source, int byteReadBufferSize) throws IOException {
if (byteReadBufferSize <= 0) {
throw new IllegalArgumentException("Bad buffer size:" + byteReadBufferSize);
} else if (source == null) {
throw new IllegalArgumentException("source is null");
}
this.buffer = new byte[byteReadBufferSize];
this.remainingBufferBytes = 0;
this.bufferOffset = 0;
try {
Decode.initState(state, source);
} catch (BrotliRuntimeException ex) {
throw new IOException("Brotli decoder initialization failed", ex);
}
}
/**
* {@inheritDoc}
*/
@Override
public void close() throws IOException {
Decode.close(state);
}
/**
* {@inheritDoc}
*/
@Override
public int read() throws IOException {
if (bufferOffset >= remainingBufferBytes) {
remainingBufferBytes = read(buffer, 0, buffer.length);
bufferOffset = 0;
if (remainingBufferBytes == -1) {
return -1;
}
}
return buffer[bufferOffset++] & 0xFF;
}
/**
* {@inheritDoc}
*/
@Override
public int read(byte[] destBuffer, int destOffset, int destLen) throws IOException {
if (destOffset < 0) {
throw new IllegalArgumentException("Bad offset: " + destOffset);
} else if (destLen < 0) {
throw new IllegalArgumentException("Bad length: " + destLen);
} else if (destOffset + destLen > destBuffer.length) {
throw new IllegalArgumentException(
"Buffer overflow: " + (destOffset + destLen) + " > " + destBuffer.length);
} else if (destLen == 0) {
return 0;
}
int copyLen = Math.max(remainingBufferBytes - bufferOffset, 0);
if (copyLen != 0) {
copyLen = Math.min(copyLen, destLen);
System.arraycopy(buffer, bufferOffset, destBuffer, destOffset, copyLen);
bufferOffset += copyLen;
destOffset += copyLen;
destLen -= copyLen;
if (destLen == 0) {
return copyLen;
}
}
try {
state.output = destBuffer;
state.outputOffset = destOffset;
state.outputLength = destLen;
state.outputUsed = 0;
Decode.decompress(state);
if (state.outputUsed == 0) {
return -1;
}
return state.outputUsed + copyLen;
} catch (BrotliRuntimeException ex) {
throw new IOException("Brotli stream decoding failed", ex);
}
// <{[INJECTED CODE]}>
}
}