Class RBBIDataWrapper

java.lang.Object

com.ibm.icu.impl.RBBIDataWrapper

public final class RBBIDataWrapper
extends Object

Internal class used for Rule Based Break Iterators.

This class provides access to the compiled break rule data, as it is stored in a .brk file. Refer to the file common/rbbidata.h from ICU4C for further details.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static final class	RBBIDataWrapper.IsAcceptable
static final class	RBBIDataWrapper.RBBIDataHeader	Data Header.
static class	RBBIDataWrapper.RBBIStateTable	A RBBI State Transition table, the form of the data used at run time in Java.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ACCEPTING	offset to the "accepting" field in a state table row.
static final int	ACCEPTING_UNCONDITIONAL	value constant for the ACCEPTING field of a state table row.
static final int	DATA_FORMAT
static final int	DH_CATCOUNT
static final int	DH_FORMATVERSION
static final int	DH_FTABLE
static final int	DH_FTABLELEN
static final int	DH_LENGTH
static final int	DH_MAGIC
static final int	DH_RTABLE
static final int	DH_RTABLELEN
static final int	DH_RULESOURCE
static final int	DH_RULESOURCELEN
static final int	DH_SIZE
static final int	DH_STATUSTABLE
static final int	DH_STATUSTABLELEN
static final int	DH_TRIE
static final int	DH_TRIELEN
RBBIDataWrapper.RBBIStateTable	fFTable
RBBIDataWrapper.RBBIDataHeader	fHeader
static final int	FORMAT_VERSION
RBBIDataWrapper.RBBIStateTable	fRTable
String	fRuleSource
int[]	fStatusTable
CodePointTrie	fTrie
private static final RBBIDataWrapper.IsAcceptable	IS_ACCEPTABLE
static final int	LOOKAHEAD	offset to the "lookahead" field in a state table row.
static final int	NEXTSTATES	offset to the start of the next states array in a state table row.
static final int	RBBI_8BITS_ROWS
static final int	RBBI_LOOKAHEAD_HARD_BREAK
static final int	TAGSIDX	offset to the "tagIndex" field in a state table row.

Constructor Summary

Constructors

Constructor	Description
RBBIDataWrapper()

Method Summary

Modifier and Type	Method	Description
static String	charToString(char n, int width)
void	dump(PrintStream out)	Debug function to display the break iterator data.
private void	dumpCharCategories(PrintStream out)
private void	dumpRow(PrintStream out, RBBIDataWrapper.RBBIStateTable table, char state)	Dump (for debug) a single row of an RBBI state table
private void	dumpTable(PrintStream out, RBBIDataWrapper.RBBIStateTable table)	Dump a state table.
static boolean	equals(RBBIDataWrapper.RBBIStateTable left, RBBIDataWrapper.RBBIStateTable right)	Equals helper for state tables, including null handling.
static RBBIDataWrapper	get(ByteBuffer bytes)	Get an RBBIDataWrapper from an InputStream onto a pre-compiled set of RBBI rules.
int	getRowIndex(int state)	RBBI State Table Indexing Function.
static String	intToHexString(int n, int width)	Fixed width int-to-string conversion.
static String	intToString(int n, int width)	Fixed width int-to-string conversion.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

fHeader

public RBBIDataWrapper.RBBIDataHeader fHeader

fFTable

public RBBIDataWrapper.RBBIStateTable fFTable

fRTable

public RBBIDataWrapper.RBBIStateTable fRTable

fTrie

public CodePointTrie fTrie

fRuleSource

public String fRuleSource

fStatusTable

public int[] fStatusTable

DATA_FORMAT

public static final int DATA_FORMAT

See Also:

• Constant Field Values

FORMAT_VERSION

public static final int FORMAT_VERSION

See Also:

• Constant Field Values

IS_ACCEPTABLE

private static final RBBIDataWrapper.IsAcceptable IS_ACCEPTABLE

DH_SIZE

public static final int DH_SIZE

See Also:

• Constant Field Values

DH_MAGIC

public static final int DH_MAGIC

See Also:

• Constant Field Values

DH_FORMATVERSION

public static final int DH_FORMATVERSION

See Also:

• Constant Field Values

DH_LENGTH

public static final int DH_LENGTH

See Also:

• Constant Field Values

DH_CATCOUNT

public static final int DH_CATCOUNT

See Also:

• Constant Field Values

DH_FTABLE

public static final int DH_FTABLE

See Also:

• Constant Field Values

DH_FTABLELEN

public static final int DH_FTABLELEN

See Also:

• Constant Field Values

DH_RTABLE

public static final int DH_RTABLE

See Also:

• Constant Field Values

DH_RTABLELEN

public static final int DH_RTABLELEN

See Also:

• Constant Field Values

DH_TRIE

public static final int DH_TRIE

See Also:

• Constant Field Values

DH_TRIELEN

public static final int DH_TRIELEN

See Also:

• Constant Field Values

DH_RULESOURCE

public static final int DH_RULESOURCE

See Also:

• Constant Field Values

DH_RULESOURCELEN

public static final int DH_RULESOURCELEN

See Also:

• Constant Field Values

DH_STATUSTABLE

public static final int DH_STATUSTABLE

See Also:

• Constant Field Values

DH_STATUSTABLELEN

public static final int DH_STATUSTABLELEN

See Also:

• Constant Field Values

ACCEPTING

public static final int ACCEPTING

offset to the "accepting" field in a state table row.

See Also:

• Constant Field Values

LOOKAHEAD

public static final int LOOKAHEAD

offset to the "lookahead" field in a state table row.

See Also:

• Constant Field Values

TAGSIDX

public static final int TAGSIDX

offset to the "tagIndex" field in a state table row.

See Also:

• Constant Field Values

NEXTSTATES

public static final int NEXTSTATES

offset to the start of the next states array in a state table row.

See Also:

• Constant Field Values

ACCEPTING_UNCONDITIONAL

public static final int ACCEPTING_UNCONDITIONAL

value constant for the ACCEPTING field of a state table row.

See Also:

• Constant Field Values

RBBI_LOOKAHEAD_HARD_BREAK

public static final int RBBI_LOOKAHEAD_HARD_BREAK

See Also:

• Constant Field Values

RBBI_8BITS_ROWS

public static final int RBBI_8BITS_ROWS

See Also:

• Constant Field Values

Constructor Details

RBBIDataWrapper

RBBIDataWrapper()

Method Details

equals

public static boolean equals(RBBIDataWrapper.RBBIStateTable left,
 RBBIDataWrapper.RBBIStateTable right)

Equals helper for state tables, including null handling.

getRowIndex

public int getRowIndex(int state)

RBBI State Table Indexing Function. Given a state number, return the array index of the start of the state table row for that state.

get

public static RBBIDataWrapper get(ByteBuffer bytes)
                           throws IOException

Get an RBBIDataWrapper from an InputStream onto a pre-compiled set of RBBI rules.

Throws:

IOException

dump

public void dump(PrintStream out)

Debug function to display the break iterator data.

intToString

public static String intToString(int n,
 int width)

Fixed width int-to-string conversion.

charToString

public static String charToString(char n,
 int width)

intToHexString

public static String intToHexString(int n,
 int width)

Fixed width int-to-string conversion.

dumpTable

private void dumpTable(PrintStream out,
 RBBIDataWrapper.RBBIStateTable table)

Dump a state table. (A full set of RBBI rules has 4 state tables.)

dumpRow

private void dumpRow(PrintStream out,
 RBBIDataWrapper.RBBIStateTable table,
 char state)

Dump (for debug) a single row of an RBBI state table

Parameters:

table -

state -

dumpCharCategories

private void dumpCharCategories(PrintStream out)