Package org.apache.uima.internal.util

Class CharacterUtils

java.lang.Object

org.apache.uima.internal.util.CharacterUtils

public class CharacterUtils
extends java.lang.Object

Collection of utilities for character handling. Contains utilities for semi-automatically creating lexer rules.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	CharacterUtils.CharRange	Represents character range.

Constructor Summary

Constructors

Constructor	Description
CharacterUtils()	Constructor for CharacterUtils.

Method Summary

Modifier and Type	Method	Description
private static java.util.ArrayList<CharacterUtils.CharRange>	getCharacterRanges(int[] charSpecs)
static java.util.ArrayList<CharacterUtils.CharRange>	getDigitRange()	Generate an ArrayList of CharRanges for what Java considers to be a digit.
static java.util.ArrayList<CharacterUtils.CharRange>	getLetterRange()	Generate an ArrayList of CharRanges for what Java considers to be a letter.
private static boolean	isType(char c, int[] types)
static void	main(java.lang.String[] args)
static void	printAntlrLexRule(java.lang.String name, java.util.ArrayList<CharacterUtils.CharRange> charRanges)
static void	printJavaCCLexRule(java.lang.String name, java.util.ArrayList<CharacterUtils.CharRange> charRanges)
static java.lang.String	toHexString(char c)	Create a hex representation of the UTF-16 encoding of a Java char.
static java.lang.String	toUnicodeChar(char c)	Create a hex representation of the UTF-16 encoding of a Java char.

Methods inherited from class java.lang.Object

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

Constructor Detail

CharacterUtils

public CharacterUtils()

Constructor for CharacterUtils.

Method Detail

isType

private static final boolean isType(char c,
                                    int[] types)

getCharacterRanges

private static java.util.ArrayList<CharacterUtils.CharRange> getCharacterRanges(int[] charSpecs)

toUnicodeChar

public static java.lang.String toUnicodeChar(char c)

Create a hex representation of the UTF-16 encoding of a Java char. This is the representation that's understood by Java when reading source code.

Parameters:

c - The char to be encoded.

Returns:

String Hex representation of character. For example, the result of encoding 'A' would be "A".

toHexString

public static java.lang.String toHexString(char c)

Create a hex representation of the UTF-16 encoding of a Java char. This is the representation that's understood by the JavaCC lexer.

Parameters:

c - The char to be encoded.

Returns:

String Hex representation of character. For example, the result of encoding 'A' would be "0x0041".

getLetterRange

public static java.util.ArrayList<CharacterUtils.CharRange> getLetterRange()

Generate an ArrayList of CharRanges for what Java considers to be a letter. I use this as input to Unicode agnostic lexers like ANTLR.

Returns:

ArrayList A list of character ranges.

getDigitRange

public static java.util.ArrayList<CharacterUtils.CharRange> getDigitRange()

Generate an ArrayList of CharRanges for what Java considers to be a digit. I use this as input to Unicode agnostic lexers like ANTLR.

Returns:

ArrayList A list of character ranges.

printAntlrLexRule

public static void printAntlrLexRule(java.lang.String name,
                                     java.util.ArrayList<CharacterUtils.CharRange> charRanges)

printJavaCCLexRule

public static void printJavaCCLexRule(java.lang.String name,
                                      java.util.ArrayList<CharacterUtils.CharRange> charRanges)

main

public static void main(java.lang.String[] args)