Package net.sf.saxon.serialize.charcode

Class UTF16CharacterSet

java.lang.Object
net.sf.saxon.serialize.charcode.UTF16CharacterSet
All Implemented Interfaces:
CharacterSet
public class UTF16CharacterSet extends Object implements CharacterSet
A class to hold some static constants and methods associated with processing UTF16 and surrogate pairs

  • Field Details

  • Method Details

    • getInstance

      public static UTF16CharacterSet getInstance()
      Get the singular instance of this class
      Returns:
      the singular instance of this class

    • 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 interface CharacterSet
      Parameters:
      c - the codepoint being tested
      Returns:
      true if the codepoint is supported

    • getCanonicalName

      public String getCanonicalName()
      Description copied from interface: CharacterSet
      Get the preferred Java name of the character set. Note that Java in many cases also supports a "historic name".
      Specified by:
      getCanonicalName in interface CharacterSet
      Returns:
      the preferred Java name

    • 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

    • 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

    • 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

    • 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

    • 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

    • 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

    • firstInvalidChar

      public static int firstInvalidChar(IntIterator iter, IntPredicateProxy predicate)
      Test whether all the characters in a CharSequence are valid XML characters
      Parameters:
      iter - iterator over the character sequence to be tested
      predicate - the predicate that all characters must satisfy
      Returns:
      the codepoint of the first invalid character in the character sequence (according to the supplied predicate); or -1 if all characters in the character sequence are valid