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JDK 1.1 Source Code Directory
JDK 1.1 source code directory contains Java source code for JDK 1.1 core classes: "C:\fyicenter\jdk-1.1.8\src".
Here is the list of Java classes of the JDK 1.1 source code:
✍: FYIcenter
⏎ java/util/zip/GZIPInputStream.java
/* * @(#)GZIPInputStream.java 1.16 01/12/10 * * Copyright 2002 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package java.util.zip; import java.io.SequenceInputStream; import java.io.ByteArrayInputStream; 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 format. * * @see InflaterInputStream * @version 1.16, 12/10/01 * @author David Connelly * */ public class GZIPInputStream extends InflaterInputStream { /** * CRC-32 for uncompressed data. */ protected CRC32 crc = new CRC32(); /** * Indicates end of input stream. */ protected boolean eos; /** * Creates a new input stream with the specified buffer size. * @param in the input stream * @param size the input buffer size * @exception IOException if an I/O error has occurred */ public GZIPInputStream(InputStream in, int size) throws IOException { super(in, new Inflater(true), size); readHeader(); crc.reset(); } /** * Creates a new input stream with a default buffer size. * @param in the input stream * @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. Blocks until enough * input is available for decompression. * @param buf the buffer into which the data is read * @param off the start offset of the data * @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 IOException if an I/O error has occurred or the compressed * input data is corrupt */ public int read(byte[] buf, int off, int len) throws IOException { if (eos) { return -1; } len = super.read(buf, off, len); if (len == -1) { readTrailer(); eos = true; } else { crc.update(buf, off, len); } return len; } /** * Closes the input stream. * @exception IOException if an I/O error has occurred */ public void close() throws IOException { inf.end(); in.close(); eos = true; } /** * GZIP header magic number. */ public final static int GZIP_MAGIC = 0x8b1f; /* * File header flags. */ private final static int FTEXT = 1; // Extra text private final static int FHCRC = 2; // Header CRC private final static int FEXTRA = 4; // Extra field private final static int FNAME = 8; // File name private final static int FCOMMENT = 16; // File comment /* * Reads GZIP member header. */ private void readHeader() throws IOException { CheckedInputStream in = new CheckedInputStream(this.in, crc); crc.reset(); // Check header magic if (readUShort(in) != GZIP_MAGIC) { throw new IOException("Not in GZIP format"); } // Check compression method if (readUByte(in) != 8) { throw new IOException("Unsupported compression method"); } // Read flags int flg = readUByte(in); // Skip MTIME, XFL, and OS fields skipBytes(in, 6); // Skip optional extra field if ((flg & FEXTRA) == FEXTRA) { skipBytes(in, readUShort(in)); } // Skip optional file name if ((flg & FNAME) == FNAME) { while (readUByte(in) != 0) ; } // Skip optional file comment if ((flg & FCOMMENT) == FCOMMENT) { while (readUByte(in) != 0) ; } // Check optional header CRC if ((flg & FHCRC) == FHCRC) { int v = (int)crc.getValue() & 0xffff; if (readUShort(in) != v) { throw new IOException("Corrupt GZIP header"); } } } /* * Reads GZIP member trailer. */ private void readTrailer() throws IOException { InputStream in = this.in; int n = inf.getRemaining(); if (n > 0) { in = new SequenceInputStream( new ByteArrayInputStream(buf, len - n, n), in); } long v = crc.getValue(); if (readUInt(in) != v || readUInt(in) != inf.getTotalOut()) { throw new IOException("Corrupt GZIP trailer"); } } /* * 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 ((int)readUByte(in) << 8) | b; } /* * Reads unsigned byte. */ private int readUByte(InputStream in) throws IOException { int b = in.read(); if (b == -1) { throw new EOFException(); } return b; } /* * 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 { byte[] buf = new byte[128]; while (n > 0) { int len = in.read(buf, 0, n < buf.length ? n : buf.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: jdk-1.1.8-src.zip File size: 1574187 bytes Release date: 2018-11-16 Download
⇒ Backup JDK 1.1 Installation Directory
2018-11-17, 149243👍, 0💬
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