org.apache.poi.poifs.common

Interface POIFSConstants

public interface POIFSConstants

A repository for constants shared by POI classes.

Field Summary

Fields

Modifier and Type	Field and Description
static int	BIG_BLOCK_MINIMUM_DOCUMENT_SIZE The minimum size of a document before it's stored using Big Blocks (normal streams).
static int	DIFAT_SECTOR_BLOCK Indicates the sector holds a DIFAT block (0xFFFFFFFC)
static int	END_OF_CHAIN Indicates the sector is the end of a chain (0xFFFFFFFE)
static int	FAT_SECTOR_BLOCK Indicates the sector holds a FAT block (0xFFFFFFFD)
static int	LARGER_BIG_BLOCK_SIZE Some use 4096 bytes
static POIFSBigBlockSize	LARGER_BIG_BLOCK_SIZE_DETAILS
static int	LARGEST_REGULAR_SECTOR_NUMBER The highest sector number you're allowed, 0xFFFFFFFA
static byte[]	OOXML_FILE_HEADER The first 4 bytes of an OOXML file, used in detection
static int	PROPERTY_SIZE How big a single property is
static byte[]	RAW_XML_FILE_HEADER The first 5 bytes of a raw XML file, used in detection
static int	SMALL_BLOCK_SIZE How big a block in the small block stream is.
static int	SMALLER_BIG_BLOCK_SIZE Most files use 512 bytes as their big block size
static POIFSBigBlockSize	SMALLER_BIG_BLOCK_SIZE_DETAILS
static int	UNUSED_BLOCK Indicates the sector is not used (0xFFFFFFFF)

Field Detail

SMALLER_BIG_BLOCK_SIZE

static final int SMALLER_BIG_BLOCK_SIZE

Most files use 512 bytes as their big block size

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Constant Field Values

SMALLER_BIG_BLOCK_SIZE_DETAILS

static final POIFSBigBlockSize SMALLER_BIG_BLOCK_SIZE_DETAILS

LARGER_BIG_BLOCK_SIZE

static final int LARGER_BIG_BLOCK_SIZE

Some use 4096 bytes

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Constant Field Values

LARGER_BIG_BLOCK_SIZE_DETAILS

static final POIFSBigBlockSize LARGER_BIG_BLOCK_SIZE_DETAILS

SMALL_BLOCK_SIZE

static final int SMALL_BLOCK_SIZE

How big a block in the small block stream is. Fixed size

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Constant Field Values

PROPERTY_SIZE

static final int PROPERTY_SIZE

How big a single property is

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Constant Field Values

BIG_BLOCK_MINIMUM_DOCUMENT_SIZE

static final int BIG_BLOCK_MINIMUM_DOCUMENT_SIZE

The minimum size of a document before it's stored using Big Blocks (normal streams). Smaller documents go in the Mini Stream (SBAT / Small Blocks)

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Constant Field Values

LARGEST_REGULAR_SECTOR_NUMBER

static final int LARGEST_REGULAR_SECTOR_NUMBER

The highest sector number you're allowed, 0xFFFFFFFA

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Constant Field Values

DIFAT_SECTOR_BLOCK

static final int DIFAT_SECTOR_BLOCK

Indicates the sector holds a DIFAT block (0xFFFFFFFC)

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Constant Field Values

FAT_SECTOR_BLOCK

static final int FAT_SECTOR_BLOCK

Indicates the sector holds a FAT block (0xFFFFFFFD)

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Constant Field Values

END_OF_CHAIN

static final int END_OF_CHAIN

Indicates the sector is the end of a chain (0xFFFFFFFE)

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Constant Field Values

UNUSED_BLOCK

static final int UNUSED_BLOCK

Indicates the sector is not used (0xFFFFFFFF)

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Constant Field Values

OOXML_FILE_HEADER

static final byte[] OOXML_FILE_HEADER

The first 4 bytes of an OOXML file, used in detection

RAW_XML_FILE_HEADER

static final byte[] RAW_XML_FILE_HEADER

The first 5 bytes of a raw XML file, used in detection