Package org.apache.commons.text.translate

Class CharSequenceTranslator

java.lang.Object

org.apache.commons.text.translate.CharSequenceTranslator

Direct Known Subclasses:

AggregateTranslator, CodePointTranslator, CsvTranslators.CsvEscaper, CsvTranslators.CsvUnescaper, LookupTranslator, NumericEntityUnescaper, OctalUnescaper, UnicodeUnescaper

public abstract class CharSequenceTranslator
extends Object

An API for translating text. Its core use is to escape and unescape text. Because escaping and unescaping is completely contextual, the API does not present two separate signatures.

Since:

1.0

Constructor Summary

Constructors

Constructor	Description
CharSequenceTranslator()

Method Summary

Modifier and Type	Method	Description
static String	hex(int codePoint)	Returns an upper case hexadecimal String for the given character.
final String	translate(CharSequence input)	Helper for non-Writer usage.
abstract int	translate(CharSequence input, int index, Writer writer)	Translate a set of code points, represented by an int index into a CharSequence, into another set of code points.
final void	translate(CharSequence input, Writer writer)	Translate an input onto a Writer.
final CharSequenceTranslator	with(CharSequenceTranslator... translators)	Helper method to create a merger of this translator with another set of translators.

Methods inherited from class java.lang.Object

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

Constructor Details

CharSequenceTranslator

public CharSequenceTranslator()

Method Details

hex

public static String hex(int codePoint)

Returns an upper case hexadecimal String for the given character.

Parameters:

codePoint - The code point to convert.

Returns:

An upper case hexadecimal String

translate

public final String translate(CharSequence input)

Helper for non-Writer usage.

Parameters:

input - CharSequence to be translated

Returns:

String output of translation

translate

public abstract int translate(CharSequence input,
 int index,
 Writer writer)
                       throws IOException

Translate a set of code points, represented by an int index into a CharSequence, into another set of code points. The number of code points consumed must be returned, and the only IOExceptions thrown must be from interacting with the Writer so that the top level API may reliably ignore StringWriter IOExceptions.

Parameters:

input - CharSequence that is being translated

index - int representing the current point of translation

writer - Writer to translate the text to

Returns:

int count of code points consumed

Throws:

IOException - if and only if the Writer produces an IOException

translate

public final void translate(CharSequence input,
 Writer writer)
                     throws IOException

Translate an input onto a Writer. This is intentionally final as its algorithm is tightly coupled with the abstract method of this class.

Parameters:

input - CharSequence that is being translated

writer - Writer to translate the text to

Throws:

IOException - if and only if the Writer produces an IOException

with

public final CharSequenceTranslator with(CharSequenceTranslator... translators)

Helper method to create a merger of this translator with another set of translators. Useful in customizing the standard functionality.

Parameters:

translators - CharSequenceTranslator array of translators to merge with this one

Returns:

CharSequenceTranslator merging this translator with the others