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Java Source Code / Java Documentation » Web Crawler » heritrix » org.archive.io.arc 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.archive.io.ArchiveReaderFactory
      org.archive.io.arc.ARCReaderFactory

ARCReaderFactory
public class ARCReaderFactory extends ArchiveReaderFactory implements ARCConstants(Code)
Factory that returns an ARCReader. Can handle compressed and uncompressed ARCs.
author:
   stack



Constructor Summary
protected  ARCReaderFactory()
     Shutdown any access to default constructor.

Method Summary
public static  ARCReaderget(String arcFileOrUrl)
    
public static  ARCReaderget(String arcFileOrUrl, long offset)
    
public static  ARCReaderget(File f)
    
public static  ARCReaderget(File f, long offset)
    
public static  ARCReaderget(File f, boolean skipSuffixTest, long offset)
    
Parameters:
  f - An arcfile to read.
Parameters:
  skipSuffixTest - Set to true if want to test that ARC has propersuffix.
public static  ArchiveReaderget(String s, InputStream is, boolean atFirstRecord)
    
public static  ARCReaderget(URL arcUrl, long offset)
     Get an ARCReader aligned at offset.
public static  ARCReaderget(URL arcUrl)
     Get an ARCReader. Pulls the ARC local into whereever the System Property java.io.tmpdir points.
protected  ArchiveReadergetArchiveReader(File f, long offset)
    
protected  ArchiveReadergetArchiveReader(File arcFile, boolean skipSuffixTest, long offset)
    
protected  ArchiveReadergetArchiveReader(String arc, InputStream is, boolean atFirstRecord)
    
public static  booleanisARCSuffix(String arcName)
    
public  booleanisCompressed(File arcFile)
    
Parameters:
  arcFile - File to test.
public static  booleantestCompressedARCFile(File arcFile)
     Check file is compressed and in ARC GZIP format.
Parameters:
  arcFile - File to test if its Internet Archive ARC fileGZIP compressed.
public static  booleantestCompressedARCFile(File arcFile, boolean skipSuffixCheck)
     Check file is compressed and in ARC GZIP format.
Parameters:
  arcFile - File to test if its Internet Archive ARC fileGZIP compressed.
Parameters:
  skipSuffixCheck - Set to true if we're not to test on the'.arc.gz' suffix.
public static  booleantestCompressedARCStream(InputStream is)
     Tests passed stream is gzip stream by reading in the HEAD. Does not reposition the stream.


Constructor Detail
ARCReaderFactory
protected ARCReaderFactory()(Code)
Shutdown any access to default constructor.




Method Detail
get
public static ARCReader get(String arcFileOrUrl) throws MalformedURLException, IOException(Code)



get
public static ARCReader get(String arcFileOrUrl, long offset) throws MalformedURLException, IOException(Code)



get
public static ARCReader get(File f) throws IOException(Code)



get
public static ARCReader get(File f, long offset) throws IOException(Code)



get
public static ARCReader get(File f, boolean skipSuffixTest, long offset) throws IOException(Code)

Parameters:
  f - An arcfile to read.
Parameters:
  skipSuffixTest - Set to true if want to test that ARC has propersuffix. Use this method and pass false to open ARCswith the .open or otherwise suffix.
Parameters:
  offset - Have returned ARCReader set to start reading at passedoffset. An ARCReader.
throws:
  IOException -



get
public static ArchiveReader get(String s, InputStream is, boolean atFirstRecord) throws IOException(Code)



get
public static ARCReader get(URL arcUrl, long offset) throws IOException(Code)
Get an ARCReader aligned at offset. This version of get will not bring the ARC local but will try to stream across the net making an HTTP 1.1 Range request on remote http server (RFC1435 Section 14.35).
Parameters:
  arcUrl - HTTP URL for an ARC (All ARCs considered remote).
Parameters:
  offset - Offset into ARC at which to start fetching. An ARCReader aligned at offset.
throws:
  IOException -



get
public static ARCReader get(URL arcUrl) throws IOException(Code)
Get an ARCReader. Pulls the ARC local into whereever the System Property java.io.tmpdir points. It then hands back an ARCReader that points at this local copy. A close on this ARCReader instance will remove the local copy.
Parameters:
  arcUrl - An URL that points at an ARC. An ARCReader.
throws:
  IOException -



getArchiveReader
protected ArchiveReader getArchiveReader(File f, long offset) throws IOException(Code)



getArchiveReader
protected ArchiveReader getArchiveReader(File arcFile, boolean skipSuffixTest, long offset) throws IOException(Code)



getArchiveReader
protected ArchiveReader getArchiveReader(String arc, InputStream is, boolean atFirstRecord) throws IOException(Code)



isARCSuffix
public static boolean isARCSuffix(String arcName)(Code)



isCompressed
public boolean isCompressed(File arcFile) throws IOException(Code)

Parameters:
  arcFile - File to test. True if arcFile is compressed ARC.
throws:
  IOException -



testCompressedARCFile
public static boolean testCompressedARCFile(File arcFile) throws IOException(Code)
Check file is compressed and in ARC GZIP format.
Parameters:
  arcFile - File to test if its Internet Archive ARC fileGZIP compressed. True if this is an Internet Archive GZIP'd ARC file (It beginsw/ the Internet Archive GZIP header and has theCOMPRESSED_ARC_FILE_EXTENSION suffix).
exception:
  IOException - If file does not exist or is not unreadable.



testCompressedARCFile
public static boolean testCompressedARCFile(File arcFile, boolean skipSuffixCheck) throws IOException(Code)
Check file is compressed and in ARC GZIP format.
Parameters:
  arcFile - File to test if its Internet Archive ARC fileGZIP compressed.
Parameters:
  skipSuffixCheck - Set to true if we're not to test on the'.arc.gz' suffix. True if this is an Internet Archive GZIP'd ARC file (It beginsw/ the Internet Archive GZIP header).
exception:
  IOException - If file does not exist or is not unreadable.



testCompressedARCStream
public static boolean testCompressedARCStream(InputStream is) throws IOException(Code)
Tests passed stream is gzip stream by reading in the HEAD. Does not reposition the stream. That is left up to the caller.
Parameters:
  is - An InputStream. True if compressed stream.
throws:
  IOException -



Methods inherited from org.archive.io.ArchiveReaderFactory
protected void addUserAgent(HttpURLConnection connection)(Code)(Java Doc)
protected InputStream asRepositionable(InputStream is)(Code)(Java Doc)
public static ArchiveReader get(String arcFileOrUrl) throws MalformedURLException, IOException(Code)(Java Doc)
public static ArchiveReader get(File f) throws IOException(Code)(Java Doc)
public static ArchiveReader get(File f, long offset) throws IOException(Code)(Java Doc)
public static ArchiveReader get(String s, InputStream is, boolean atFirstRecord) throws IOException(Code)(Java Doc)
public static ArchiveReader get(URL u, long offset) throws IOException(Code)(Java Doc)
public static ArchiveReader get(URL u) throws IOException(Code)(Java Doc)
protected ArchiveReader getArchiveReader(String arcFileOrUrl) throws MalformedURLException, IOException(Code)(Java Doc)
protected ArchiveReader getArchiveReader(String arcFileOrUrl, long offset) throws MalformedURLException, IOException(Code)(Java Doc)
protected ArchiveReader getArchiveReader(File f) throws IOException(Code)(Java Doc)
protected ArchiveReader getArchiveReader(File f, long offset) throws IOException(Code)(Java Doc)
protected ArchiveReader getArchiveReader(String id, InputStream is, boolean atFirstRecord) throws IOException(Code)(Java Doc)
protected ArchiveReader getArchiveReader(URL f, long offset) throws IOException(Code)(Java Doc)
protected ArchiveReader getArchiveReader(URL u) throws IOException(Code)(Java Doc)
protected boolean isCompressed(File f) throws IOException(Code)(Java Doc)
protected ArchiveReader makeARCLocal(URLConnection connection) throws IOException(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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