org.apache.tika.parser.chm.accessor
Class ChmPmglHeader

java.lang.Object
  extended by org.apache.tika.parser.chm.accessor.ChmPmglHeader
All Implemented Interfaces:
Serializable, ChmAccessor<ChmPmglHeader>

public class ChmPmglHeader
extends Object
implements ChmAccessor<ChmPmglHeader>

Description There are two types of directory chunks -- index chunks, and listing chunks. The index chunk will be omitted if there is only one listing chunk. A listing chunk has the following format: 0000: char[4] 'PMGL' 0004: DWORD Length of free space and/or quickref area at end of directory chunk 0008: DWORD Always 0 000C: DWORD Chunk number of previous listing chunk when reading directory in sequence (-1 if this is the first listing chunk) 0010: DWORD Chunk number of next listing chunk when reading directory in sequence (-1 if this is the last listing chunk) 0014: Directory listing entries (to quickref area) Sorted by filename; the sort is case-insensitive The quickref area is written backwards from the end of the chunk. One quickref entry exists for every n entries in the file, where n is calculated as 1 + (1 << quickref density). So for density = 2, n = 5 Chunklen-0002: WORD Number of entries in the chunk Chunklen-0004: WORD Offset of entry n from entry 0 Chunklen-0008: WORD Offset of entry 2n from entry 0 Chunklen-000C: WORD Offset of entry 3n from entry 0 ... The format of a directory listing entry is as follows BYTE: length of name BYTEs: name (UTF-8 encoded) ENCINT: content section ENCINT: offset ENCINT: length The offset is from the beginning of the content section the file is in, after the section has been decompressed (if appropriate). The length also refers to length of the file in the section after decompression. There are two kinds of file represented in the directory: user data and format related files. The files which are format-related have names which begin with '::', the user data files have names which begin with "/". ://translated.by/you/microsoft-s-html-help-chm-format-incomplete/original /?show-translation-form=1

Author:
olegt
See Also:
Serialized Form

Constructor Summary
ChmPmglHeader()
           
 
Method Summary
 int getBlockNext()
           
 int getBlockPrev()
           
 long getFreeSpace()
           
 byte[] getSignature()
           
 long getUnknown0008()
           
static void main(String[] args)
           
 void parse(byte[] data, ChmPmglHeader chmPmglHeader)
          Parses chm accessor
protected  void setBlockNext(int block_next)
           
protected  void setBlockPrev(int block_prev)
           
 void setFreeSpace(long free_space)
           
protected  void setSignature(byte[] signature)
           
protected  void setUnknown0008(long unknown_0008)
           
 String toString()
           
protected  void unmarshalCharArray(byte[] data, ChmPmglHeader chmPmglHeader, int count)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

ChmPmglHeader

public ChmPmglHeader()
Method Detail

getFreeSpace

public long getFreeSpace()

setFreeSpace

public void setFreeSpace(long free_space)

toString

public String toString()
Overrides:
toString in class Object

unmarshalCharArray

protected void unmarshalCharArray(byte[] data,
                                  ChmPmglHeader chmPmglHeader,
                                  int count)
                           throws TikaException
Throws:
TikaException

parse

public void parse(byte[] data,
                  ChmPmglHeader chmPmglHeader)
           throws TikaException
Description copied from interface: ChmAccessor
Parses chm accessor

Specified by:
parse in interface ChmAccessor<ChmPmglHeader>
Parameters:
data - chm file
Throws:
TikaException

getSignature

public byte[] getSignature()

setSignature

protected void setSignature(byte[] signature)

getUnknown0008

public long getUnknown0008()

setUnknown0008

protected void setUnknown0008(long unknown_0008)

getBlockPrev

public int getBlockPrev()

setBlockPrev

protected void setBlockPrev(int block_prev)

getBlockNext

public int getBlockNext()

setBlockNext

protected void setBlockNext(int block_next)

main

public static void main(String[] args)
Parameters:
args -


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