?? gzippedinputstream.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_07) on Sun May 06 17:59:49 GMT 2007 --><TITLE>GzippedInputStream (Heritrix 1.12.1)</TITLE><META NAME="keywords" CONTENT="org.archive.io.GzippedInputStream class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="GzippedInputStream (Heritrix 1.12.1)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/GzippedInputStream.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../org/archive/io/GzipHeader.html" title="class in org.archive.io"><B>PREV CLASS</B></A> <A HREF="../../../org/archive/io/MultiByteReplayCharSequence.html" title="class in org.archive.io"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html?org/archive/io/GzippedInputStream.html" target="_top"><B>FRAMES</B></A> <A HREF="GzippedInputStream.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | <A HREF="#fields_inherited_from_class_java.util.zip.GZIPInputStream">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.archive.io</FONT><BR>Class GzippedInputStream</H2><PRE>java.lang.Object <IMG SRC="../../../resources/inherit.gif" ALT="extended by ">java.io.InputStream <IMG SRC="../../../resources/inherit.gif" ALT="extended by ">java.io.FilterInputStream <IMG SRC="../../../resources/inherit.gif" ALT="extended by ">java.util.zip.InflaterInputStream <IMG SRC="../../../resources/inherit.gif" ALT="extended by ">java.util.zip.GZIPInputStream <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>org.archive.io.GzippedInputStream</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>it.unimi.dsi.fastutil.io.RepositionableStream, java.io.Closeable</DD></DL><HR><DL><DT><PRE>public class <B>GzippedInputStream</B><DT>extends java.util.zip.GZIPInputStream<DT>implements it.unimi.dsi.fastutil.io.RepositionableStream</DL></PRE><P>Subclass of GZIPInputStream that can handle a stream made of multiple concatenated GZIP members/records. This class is needed because GZIPInputStream only finds the first GZIP member in the file even if the file is made up of multiple GZIP members. <p>Takes an InputStream stream that implements <CODE>RepositionableStream</CODE> interface so it can backup over-reads done by the zlib Inflater class. <p>Use the <A HREF="../../../org/archive/io/GzippedInputStream.html#iterator()"><CODE>iterator()</CODE></A> method to get a gzip member iterator. Calls to <CODE>Iterator.next()</CODE> returns the next gzip member in the stream. Cast return from <CODE>Iterator.next()</CODE> to InputStream. <p>Use <A HREF="../../../org/archive/io/GzippedInputStream.html#gzipMemberSeek(long)"><CODE>gzipMemberSeek(long)</CODE></A> to position stream before reading a gzip member if doing random accessing of gzip members. Pass it offset at which gzip member starts. <p>If you need to know position at which a gzip member starts, call <A HREF="../../../org/archive/io/GzippedInputStream.html#position()"><CODE>position()</CODE></A> just after a call to <CODE>Iterator.hasNext()</CODE> and before you call <CODE>Iterator.next()</CODE>.<P><P><DL><DT><B>Author:</B></DT> <DD>stack</DD></DL><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Field Summary</B></FONT></TH></TR></TABLE> <A NAME="fields_inherited_from_class_java.util.zip.GZIPInputStream"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Fields inherited from class java.util.zip.GZIPInputStream</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>crc, eos, GZIP_MAGIC</CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_java.util.zip.InflaterInputStream"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Fields inherited from class java.util.zip.InflaterInputStream</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>buf, inf, len</CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_java.io.FilterInputStream"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Fields inherited from class java.io.FilterInputStream</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>in</CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#GzippedInputStream(java.io.InputStream)">GzippedInputStream</A></B>(java.io.InputStream is)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#GzippedInputStream(java.io.InputStream, int)">GzippedInputStream</A></B>(java.io.InputStream is, int size)</CODE><BR> </TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected static java.io.InputStream</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#checkStream(java.io.InputStream)">checkStream</A></B>(java.io.InputStream is)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#compareBytes(int, int)">compareBytes</A></B>(int a, int b)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../../org/archive/io/GzipHeader.html" title="class in org.archive.io">GzipHeader</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#getGzipHeader()">getGzipHeader</A></B>()</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected java.util.zip.Inflater</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#getInflater()">getInflater</A></B>()</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected java.io.InputStream</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#getInputStream()">getInputStream</A></B>()</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> long</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#gotoEOR()">gotoEOR</A></B>()</CODE><BR> Exhaust current GZIP member content.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> long</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#gotoEOR(int)">gotoEOR</A></B>(int ignore)</CODE><BR> Exhaust current GZIP member content.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#gzip(byte[])">gzip</A></B>(byte[] bytes)</CODE><BR> Gzip passed bytes.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#gzipMemberSeek()">gzipMemberSeek</A></B>()</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#gzipMemberSeek(long)">gzipMemberSeek</A></B>(long position)</CODE><BR> Seek to a gzip member.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#isCompressedRepositionableStream(it.unimi.dsi.fastutil.io.RepositionableStream)">isCompressedRepositionableStream</A></B>(it.unimi.dsi.fastutil.io.RepositionableStream rs)</CODE><BR> Tests passed stream is GZIP stream by reading in the HEAD.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#isCompressedStream(java.io.InputStream)">isCompressedStream</A></B>(java.io.InputStream is)</CODE><BR> Tests passed stream is gzip stream by reading in the HEAD.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Iterator</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#iterator()">iterator</A></B>()</CODE><BR> Returns a GZIP Member Iterator.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#moveToNextGzipMember()">moveToNextGzipMember</A></B>()</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> long</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#position()">position</A></B>()</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#position(long)">position</A></B>(long position)</CODE><BR> Seek to passed offset.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#readHeader()">readHeader</A></B>()</CODE><BR> Read in the gzip header.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/archive/io/GzippedInputStream.html#resetInflater()">resetInflater</A></B>()</CODE><BR> Move to next gzip member in the file.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.util.zip.GZIPInputStream"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class java.util.zip.GZIPInputStream</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>close, read</CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.util.zip.InflaterInputStream"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class java.util.zip.InflaterInputStream</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>available, fill, mark, markSupported, read, reset, skip</CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.io.FilterInputStream"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class java.io.FilterInputStream</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>read</CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TH></TR></TABLE><A NAME="GzippedInputStream(java.io.InputStream)"><!-- --></A><H3>GzippedInputStream</H3><PRE>public <B>GzippedInputStream</B>(java.io.InputStream is) throws java.io.IOException</PRE><DL><DL><DT><B>Throws:</B><DD><CODE>java.io.IOException</CODE></DL></DL><HR><A NAME="GzippedInputStream(java.io.InputStream, int)"><!-- --></A><H3>GzippedInputStream</H3><PRE>?? 快捷鍵說明
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