JDK 11 java.base.jmod - Base Module
JDK 11 java.base.jmod is the JMOD file for JDK 11 Base module.
JDK 11 Base module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\java.base.jmod.
JDK 11 Base module compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.
JDK 11 Base module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\java.base.
You can click and view the content of each source code file in the list below.
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⏎ java/util/zip/GZIPInputStream.java
/*
* Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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package java.util.zip;
import java.io.SequenceInputStream;
import java.io.ByteArrayInputStream;
import java.io.FilterInputStream;
import java.io.InputStream;
import java.io.IOException;
import java.io.EOFException;
/**
* This class implements a stream filter for reading compressed data in
* the GZIP file format.
*
* @see InflaterInputStream
* @author David Connelly
* @since 1.1
*
*/
public
class GZIPInputStream extends InflaterInputStream {
/**
* CRC-32 for uncompressed data.
*/
protected CRC32 crc = new CRC32();
/**
* Indicates end of input stream.
*/
protected boolean eos;
private boolean closed = false;
/**
* Check to make sure that this stream has not been closed
*/
private void ensureOpen() throws IOException {
if (closed) {
throw new IOException("Stream closed");
}
}
/**
* Creates a new input stream with the specified buffer size.
* @param in the input stream
* @param size the input buffer size
*
* @exception ZipException if a GZIP format error has occurred or the
* compression method used is unsupported
* @exception IOException if an I/O error has occurred
* @exception IllegalArgumentException if {@code size <= 0}
*/
public GZIPInputStream(InputStream in, int size) throws IOException {
super(in, new Inflater(true), size);
usesDefaultInflater = true;
readHeader(in);
}
/**
* Creates a new input stream with a default buffer size.
* @param in the input stream
*
* @exception ZipException if a GZIP format error has occurred or the
* compression method used is unsupported
* @exception IOException if an I/O error has occurred
*/
public GZIPInputStream(InputStream in) throws IOException {
this(in, 512);
}
/**
* Reads uncompressed data into an array of bytes. If <code>len</code> is not
* zero, the method will block until some input can be decompressed; otherwise,
* no bytes are read and <code>0</code> is returned.
* @param buf the buffer into which the data is read
* @param off the start offset in the destination array <code>b</code>
* @param len the maximum number of bytes read
* @return the actual number of bytes read, or -1 if the end of the
* compressed input stream is reached
*
* @exception NullPointerException If <code>buf</code> is <code>null</code>.
* @exception IndexOutOfBoundsException If <code>off</code> is negative,
* <code>len</code> is negative, or <code>len</code> is greater than
* <code>buf.length - off</code>
* @exception ZipException if the compressed input data is corrupt.
* @exception IOException if an I/O error has occurred.
*
*/
public int read(byte[] buf, int off, int len) throws IOException {
ensureOpen();
if (eos) {
return -1;
}
int n = super.read(buf, off, len);
if (n == -1) {
if (readTrailer())
eos = true;
else
return this.read(buf, off, len);
} else {
crc.update(buf, off, n);
}
return n;
}
/**
* Closes this input stream and releases any system resources associated
* with the stream.
* @exception IOException if an I/O error has occurred
*/
public void close() throws IOException {
if (!closed) {
super.close();
eos = true;
closed = true;
}
}
/**
* GZIP header magic number.
*/
public static final int GZIP_MAGIC = 0x8b1f;
/*
* File header flags.
*/
private static final int FTEXT = 1; // Extra text
private static final int FHCRC = 2; // Header CRC
private static final int FEXTRA = 4; // Extra field
private static final int FNAME = 8; // File name
private static final int FCOMMENT = 16; // File comment
/*
* Reads GZIP member header and returns the total byte number
* of this member header.
*/
private int readHeader(InputStream this_in) throws IOException {
CheckedInputStream in = new CheckedInputStream(this_in, crc);
crc.reset();
// Check header magic
if (readUShort(in) != GZIP_MAGIC) {
throw new ZipException("Not in GZIP format");
}
// Check compression method
if (readUByte(in) != 8) {
throw new ZipException("Unsupported compression method");
}
// Read flags
int flg = readUByte(in);
// Skip MTIME, XFL, and OS fields
skipBytes(in, 6);
int n = 2 + 2 + 6;
// Skip optional extra field
if ((flg & FEXTRA) == FEXTRA) {
int m = readUShort(in);
skipBytes(in, m);
n += m + 2;
}
// Skip optional file name
if ((flg & FNAME) == FNAME) {
do {
n++;
} while (readUByte(in) != 0);
}
// Skip optional file comment
if ((flg & FCOMMENT) == FCOMMENT) {
do {
n++;
} while (readUByte(in) != 0);
}
// Check optional header CRC
if ((flg & FHCRC) == FHCRC) {
int v = (int)crc.getValue() & 0xffff;
if (readUShort(in) != v) {
throw new ZipException("Corrupt GZIP header");
}
n += 2;
}
crc.reset();
return n;
}
/*
* Reads GZIP member trailer and returns true if the eos
* reached, false if there are more (concatenated gzip
* data set)
*/
private boolean readTrailer() throws IOException {
InputStream in = this.in;
int n = inf.getRemaining();
if (n > 0) {
in = new SequenceInputStream(
new ByteArrayInputStream(buf, len - n, n),
new FilterInputStream(in) {
public void close() throws IOException {}
});
}
// Uses left-to-right evaluation order
if ((readUInt(in) != crc.getValue()) ||
// rfc1952; ISIZE is the input size modulo 2^32
(readUInt(in) != (inf.getBytesWritten() & 0xffffffffL)))
throw new ZipException("Corrupt GZIP trailer");
// If there are more bytes available in "in" or
// the leftover in the "inf" is > 26 bytes:
// this.trailer(8) + next.header.min(10) + next.trailer(8)
// try concatenated case
if (this.in.available() > 0 || n > 26) {
int m = 8; // this.trailer
try {
m += readHeader(in); // next.header
} catch (IOException ze) {
return true; // ignore any malformed, do nothing
}
inf.reset();
if (n > m)
inf.setInput(buf, len - n + m, n - m);
return false;
}
return true;
}
/*
* Reads unsigned integer in Intel byte order.
*/
private long readUInt(InputStream in) throws IOException {
long s = readUShort(in);
return ((long)readUShort(in) << 16) | s;
}
/*
* Reads unsigned short in Intel byte order.
*/
private int readUShort(InputStream in) throws IOException {
int b = readUByte(in);
return (readUByte(in) << 8) | b;
}
/*
* Reads unsigned byte.
*/
private int readUByte(InputStream in) throws IOException {
int b = in.read();
if (b == -1) {
throw new EOFException();
}
if (b < -1 || b > 255) {
// Report on this.in, not argument in; see read{Header, Trailer}.
throw new IOException(this.in.getClass().getName()
+ ".read() returned value out of range -1..255: " + b);
}
return b;
}
private byte[] tmpbuf = new byte[128];
/*
* Skips bytes of input data blocking until all bytes are skipped.
* Does not assume that the input stream is capable of seeking.
*/
private void skipBytes(InputStream in, int n) throws IOException {
while (n > 0) {
int len = in.read(tmpbuf, 0, n < tmpbuf.length ? n : tmpbuf.length);
if (len == -1) {
throw new EOFException();
}
n -= len;
}
}
}
⏎ java/util/zip/GZIPInputStream.java
Or download all of them as a single archive file:
File name: java.base-11.0.1-src.zip File size: 8740354 bytes Release date: 2018-11-04 Download
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