Package net.sf.saxon.charcode
Class UnicodeCharacterSet
- java.lang.Object
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- net.sf.saxon.charcode.UnicodeCharacterSet
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- All Implemented Interfaces:
CharacterSet
public final class UnicodeCharacterSet extends java.lang.Object implements CharacterSet
This class defines properties of the Unicode character set
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static int
decodeUTF8(byte[] in, int used)
Decode a UTF8 characterstatic UnicodeCharacterSet
getInstance()
Get the singular instance of this classstatic int
getUTF8Encoding(char in, char in2, byte[] out)
Static method to generate the UTF-8 representation of a Unicode characterboolean
inCharset(int c)
Determine if a character is present in the character set
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Method Detail
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getInstance
public static UnicodeCharacterSet getInstance()
Get the singular instance of this class- Returns:
- the singular instance of this classthe singular instance of this class
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inCharset
public boolean inCharset(int c)
Description copied from interface:CharacterSet
Determine if a character is present in the character set- Specified by:
inCharset
in interfaceCharacterSet
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getUTF8Encoding
public static int getUTF8Encoding(char in, char in2, byte[] out)
Static method to generate the UTF-8 representation of a Unicode character- Parameters:
in
- the Unicode character, or the high half of a surrogate pairin2
- the low half of a surrogate pair (ignored unless the first argument is in the range for a surrogate pair)out
- an array of at least 4 bytes to hold the UTF-8 representation.- Returns:
- the number of bytes in the UTF-8 representation
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decodeUTF8
public static int decodeUTF8(byte[] in, int used) throws java.lang.IllegalArgumentException
Decode a UTF8 character- Parameters:
in
- array of bytes representing a single UTF-8 encoded characterused
- number of bytes in the array that are actually used- Returns:
- the Unicode codepoint of this character
- Throws:
java.lang.IllegalArgumentException
- if the byte sequence is not a valid UTF-8 representation
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