Package net.sf.saxon.charcode
Class UTF16
- java.lang.Object
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- net.sf.saxon.charcode.UTF16
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public class UTF16 extends java.lang.Object
A class to hold some static constants and methods associated with processing UTF16 and surrogate pairs
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Field Summary
Fields Modifier and Type Field Description static int
NONBMP_MAX
static int
NONBMP_MIN
static char
SURROGATE1_MAX
static char
SURROGATE1_MIN
static char
SURROGATE2_MAX
static char
SURROGATE2_MIN
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Constructor Summary
Constructors Constructor Description UTF16()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static int
combinePair(char high, char low)
Return the non-BMP character corresponding to a given surrogate pair surrogates.static char
highSurrogate(int ch)
Return the high surrogate of a non-BMP characterstatic boolean
isHighSurrogate(int ch)
Test whether the given character is a high surrogatestatic boolean
isLowSurrogate(int ch)
Test whether the given character is a low surrogatestatic boolean
isSurrogate(int c)
Test whether a given character is a surrogate (high or low)static char
lowSurrogate(int ch)
Return the low surrogate of a non-BMP character
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Field Detail
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NONBMP_MIN
public static final int NONBMP_MIN
- See Also:
- Constant Field Values
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NONBMP_MAX
public static final int NONBMP_MAX
- See Also:
- Constant Field Values
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SURROGATE1_MIN
public static final char SURROGATE1_MIN
- See Also:
- Constant Field Values
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SURROGATE1_MAX
public static final char SURROGATE1_MAX
- See Also:
- Constant Field Values
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SURROGATE2_MIN
public static final char SURROGATE2_MIN
- See Also:
- Constant Field Values
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SURROGATE2_MAX
public static final char SURROGATE2_MAX
- See Also:
- Constant Field Values
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Method Detail
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combinePair
public static int combinePair(char high, char low)
Return the non-BMP character corresponding to a given surrogate pair surrogates.- Parameters:
high
- The high surrogate.low
- The low surrogate.- Returns:
- the Unicode codepoint represented by the surrogate pair
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highSurrogate
public static char highSurrogate(int ch)
Return the high surrogate of a non-BMP character- Parameters:
ch
- The Unicode codepoint of the non-BMP character to be divided.- Returns:
- the first character in the surrogate pair
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lowSurrogate
public static char lowSurrogate(int ch)
Return the low surrogate of a non-BMP character- Parameters:
ch
- The Unicode codepoint of the non-BMP character to be divided.- Returns:
- the second character in the surrogate pair
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isSurrogate
public static boolean isSurrogate(int c)
Test whether a given character is a surrogate (high or low)- Parameters:
c
- the character to test- Returns:
- true if the character is the high or low half of a surrogate pair
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isHighSurrogate
public static boolean isHighSurrogate(int ch)
Test whether the given character is a high surrogate- Parameters:
ch
- The character to test.- Returns:
- true if the character is the first character in a surrogate pair
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isLowSurrogate
public static boolean isLowSurrogate(int ch)
Test whether the given character is a low surrogate- Parameters:
ch
- The character to test.- Returns:
- true if the character is the second character in a surrogate pair
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