com.ibm.icu.impl

Class Norm2AllModes.Normalizer2WithImpl

java.lang.Object

com.ibm.icu.text.Normalizer2

com.ibm.icu.impl.Norm2AllModes.Normalizer2WithImpl

Direct Known Subclasses:

Norm2AllModes.ComposeNormalizer2, Norm2AllModes.DecomposeNormalizer2, Norm2AllModes.FCDNormalizer2

Enclosing class:

Norm2AllModes

public abstract static class Norm2AllModes.Normalizer2WithImpl
extends Normalizer2

Nested Class Summary

Nested classes/interfaces inherited from class com.ibm.icu.text.Normalizer2

Normalizer2.Mode

Field Summary

Fields

Modifier and Type	Field and Description
Normalizer2Impl	impl

Constructor Summary

Constructors

Constructor and Description
Normalizer2WithImpl(Normalizer2Impl ni)

Method Summary

Modifier and Type	Method and Description
StringBuilder	append(StringBuilder first, CharSequence second) Appends the second string to the first string (merging them at the boundary) and returns the first string.
int	composePair(int a, int b) Performs pairwise composition of a & b and returns the composite if there is one.
int	getCombiningClass(int c) Gets the combining class of c.
String	getDecomposition(int c) Gets the decomposition mapping of c.
int	getQuickCheck(int c)
String	getRawDecomposition(int c) Gets the raw decomposition mapping of c.
boolean	isNormalized(CharSequence s) Tests if the string is normalized.
Appendable	normalize(CharSequence src, Appendable dest) Writes the normalized form of the source string to the destination Appendable and returns the destination Appendable.
protected abstract void	normalize(CharSequence src, Normalizer2Impl.ReorderingBuffer buffer)
StringBuilder	normalize(CharSequence src, StringBuilder dest) Writes the normalized form of the source string to the destination string (replacing its contents) and returns the destination string.
protected abstract void	normalizeAndAppend(CharSequence src, boolean doNormalize, Normalizer2Impl.ReorderingBuffer buffer)
StringBuilder	normalizeSecondAndAppend(StringBuilder first, CharSequence second) Appends the normalized form of the second string to the first string (merging them at the boundary) and returns the first string.
StringBuilder	normalizeSecondAndAppend(StringBuilder first, CharSequence second, boolean doNormalize)
Normalizer.QuickCheckResult	quickCheck(CharSequence s) Tests if the string is normalized.

Methods inherited from class com.ibm.icu.text.Normalizer2

getInstance, getNFCInstance, getNFDInstance, getNFKCCasefoldInstance, getNFKCInstance, getNFKDInstance, hasBoundaryAfter, hasBoundaryBefore, isInert, normalize, spanQuickCheckYes

Methods inherited from class java.lang.Object

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

Field Detail

impl

public final Normalizer2Impl impl

Constructor Detail

Normalizer2WithImpl

public Normalizer2WithImpl(Normalizer2Impl ni)

Method Detail

normalize

public StringBuilder normalize(CharSequence src,
                               StringBuilder dest)

Description copied from class: Normalizer2

Writes the normalized form of the source string to the destination string (replacing its contents) and returns the destination string. The source and destination strings must be different objects.

Specified by:

normalize in class Normalizer2

Parameters:

src - source string

dest - destination string; its contents is replaced with normalized src

Returns:

dest

normalize

public Appendable normalize(CharSequence src,
                            Appendable dest)

Description copied from class: Normalizer2

Writes the normalized form of the source string to the destination Appendable and returns the destination Appendable. The source and destination strings must be different objects.

Any IOException is wrapped into a ICUUncheckedIOException.

Specified by:

normalize in class Normalizer2

Parameters:

src - source string

dest - destination Appendable; gets normalized src appended

Returns:

dest

normalize

protected abstract void normalize(CharSequence src,
                                  Normalizer2Impl.ReorderingBuffer buffer)

normalizeSecondAndAppend

public StringBuilder normalizeSecondAndAppend(StringBuilder first,
                                              CharSequence second)

Description copied from class: Normalizer2

Appends the normalized form of the second string to the first string (merging them at the boundary) and returns the first string. The result is normalized if the first string was normalized. The first and second strings must be different objects.

Specified by:

normalizeSecondAndAppend in class Normalizer2

Parameters:

first - string, should be normalized

second - string, will be normalized

Returns:

first

append

public StringBuilder append(StringBuilder first,
                            CharSequence second)

Description copied from class: Normalizer2

Appends the second string to the first string (merging them at the boundary) and returns the first string. The result is normalized if both the strings were normalized. The first and second strings must be different objects.

Specified by:

append in class Normalizer2

Parameters:

first - string, should be normalized

second - string, should be normalized

Returns:

first

normalizeSecondAndAppend

public StringBuilder normalizeSecondAndAppend(StringBuilder first,
                                              CharSequence second,
                                              boolean doNormalize)

normalizeAndAppend

protected abstract void normalizeAndAppend(CharSequence src,
                                           boolean doNormalize,
                                           Normalizer2Impl.ReorderingBuffer buffer)

getDecomposition

public String getDecomposition(int c)

Description copied from class: Normalizer2

Gets the decomposition mapping of c. Roughly equivalent to normalizing the String form of c on a DECOMPOSE Normalizer2 instance, but much faster, and except that this function returns null if c does not have a decomposition mapping in this instance's data. This function is independent of the mode of the Normalizer2.

Specified by:

getDecomposition in class Normalizer2

Parameters:

c - code point

Returns:

c's decomposition mapping, if any; otherwise null

getRawDecomposition

public String getRawDecomposition(int c)

Description copied from class: Normalizer2

Gets the raw decomposition mapping of c.

This is similar to the getDecomposition() method but returns the raw decomposition mapping as specified in UnicodeData.txt or (for custom data) in the mapping files processed by the gennorm2 tool. By contrast, getDecomposition() returns the processed, recursively-decomposed version of this mapping.

When used on a standard NFKC Normalizer2 instance, getRawDecomposition() returns the Unicode Decomposition_Mapping (dm) property.

When used on a standard NFC Normalizer2 instance, it returns the Decomposition_Mapping only if the Decomposition_Type (dt) is Canonical (Can); in this case, the result contains either one or two code points (=1..4 Java chars).

This function is independent of the mode of the Normalizer2. The default implementation returns null.

Overrides:

getRawDecomposition in class Normalizer2

Parameters:

c - code point

Returns:

c's raw decomposition mapping, if any; otherwise null

composePair

public int composePair(int a,
                       int b)

Description copied from class: Normalizer2

Performs pairwise composition of a & b and returns the composite if there is one.

Returns a composite code point c only if c has a two-way mapping to a+b. In standard Unicode normalization, this means that c has a canonical decomposition to a+b and c does not have the Full_Composition_Exclusion property.

This function is independent of the mode of the Normalizer2. The default implementation returns a negative value.

Overrides:

composePair in class Normalizer2

Parameters:

a - A (normalization starter) code point.

b - Another code point.

Returns:

The non-negative composite code point if there is one; otherwise a negative value.

getCombiningClass

public int getCombiningClass(int c)

Description copied from class: Normalizer2

Gets the combining class of c. The default implementation returns 0 but all standard implementations return the Unicode Canonical_Combining_Class value.

Overrides:

getCombiningClass in class Normalizer2

Parameters:

c - code point

Returns:

c's combining class

isNormalized

public boolean isNormalized(CharSequence s)

Description copied from class: Normalizer2

Tests if the string is normalized. Internally, in cases where the quickCheck() method would return "maybe" (which is only possible for the two COMPOSE modes) this method resolves to "yes" or "no" to provide a definitive result, at the cost of doing more work in those cases.

Specified by:

isNormalized in class Normalizer2

Parameters:

s - input string

Returns:

true if s is normalized

quickCheck

public Normalizer.QuickCheckResult quickCheck(CharSequence s)

Description copied from class: Normalizer2

Tests if the string is normalized. For the two COMPOSE modes, the result could be "maybe" in cases that would take a little more work to resolve definitively. Use spanQuickCheckYes() and normalizeSecondAndAppend() for a faster combination of quick check + normalization, to avoid re-checking the "yes" prefix.

Specified by:

quickCheck in class Normalizer2

Parameters:

s - input string

Returns:

the quick check result

getQuickCheck

public int getQuickCheck(int c)