Package net.sf.saxon.expr.number

Class Alphanumeric

  • public class Alphanumeric
extends java.lang.Object
    This class contains static utility methods to test whether a character is alphanumeric, as defined by the rules of xsl:number: that is, whether it is in one of the Unicode categories Nd, Nl, No, Lu, Ll, Lt, Lm or Lo

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static int getDigitFamily​(int in)
      Determine which digit family a decimal digit belongs to: that is, return the corresponding zero digit.
      static int getDigitValue​(int in)
      Determine whether a character represents a decimal digit and if so, which digit.
      static boolean isAlphanumeric​(int codepoint)
      Determine whether a Unicode codepoint is alphanumeric, that is, whether it is in one of the categories Nd, Nl, No, Lu, Ll, Lt, Lm or Lo

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • isAlphanumeric

        public static boolean isAlphanumeric​(int codepoint)
        Determine whether a Unicode codepoint is alphanumeric, that is, whether it is in one of the categories Nd, Nl, No, Lu, Ll, Lt, Lm or Lo
        Parameters:
        codepoint - the codepoint to be tested
        Returns:
        true if the codepoint is in one of these categories

      • getDigitValue

        public static int getDigitValue​(int in)
        Determine whether a character represents a decimal digit and if so, which digit.
        Parameters:
        in - the Unicode character being tested.
        Returns:
        -1 if it's not a decimal digit, otherwise the digit value.

      • getDigitFamily

        public static int getDigitFamily​(int in)
        Determine which digit family a decimal digit belongs to: that is, return the corresponding zero digit.
        Parameters:
        in - a Unicode character
        Returns:
        if the character is a digit, return the Unicode character that represents zero in the same digit family. Otherwise, return -1.