Package org.htmlunit.cyberneko.xerces.util

Class XMLChar

  • public final class XMLChar
extends Object
    This class defines the basic XML character properties. The data in this class can be used to verify that a character is a valid XML character or if the character is a space, name start, or name character.

    A series of convenience methods are supplied to ease the burden of the developer. Because inlining the checks can improve per character performance, the tables of character properties are public. Using the character as an index into the CHARS array and applying the appropriate mask flag (e.g. MASK_VALID), yields the same results as calling the convenience methods. There is one exception: check the comments for the isValid method for details.

    Author:
    Glenn Marcy, IBM, Andy Clark, IBM, Eric Ye, IBM, Arnaud Le Hors, IBM, Michael Glavassevich, IBM, Rahul Srivastava, Sun Microsystems Inc.

    • Field Detail

      • MASK_NAME_START

        public static final int MASK_NAME_START
        Name start character mask.
        See Also:
        Constant Field Values

      • MASK_NCNAME_START

        public static final int MASK_NCNAME_START
        NCName start character mask.
        See Also:
        Constant Field Values

      • MASK_NCNAME

        public static final int MASK_NCNAME
        NCName character mask.
        See Also:
        Constant Field Values

    • Method Detail

      • supplemental

        public static int supplemental​(char h,
                               char l)
        Parameters:
        h - The high surrogate.
        l - The low surrogate.
        Returns:
        true the supplemental character corresponding to the given surrogates.

      • isLowSurrogate

        public static boolean isLowSurrogate​(int c)
        Parameters:
        c - The character to check.
        Returns:
        whether the given character is a low surrogate

      • isNameStart

        public static boolean isNameStart​(int c)
        Parameters:
        c - The character to check.
        Returns:
        true if the specified character is a valid name start character as defined by production [5] in the XML 1.0 specification.

      • isName

        public static boolean isName​(int c)
        Parameters:
        c - The character to check.
        Returns:
        true if the specified character is a valid name character as defined by production [4] in the XML 1.0 specification.

      • isNCNameStart

        public static boolean isNCNameStart​(int c)
        Parameters:
        c - The character to check.
        Returns:
        true if the specified character is a valid NCName start character as defined by production [4] in Namespaces in XML recommendation.

      • isNCName

        public static boolean isNCName​(int c)
        Parameters:
        c - The character to check.
        Returns:
        true if the specified character is a valid NCName character as defined by production [5] in Namespaces in XML recommendation.

      • isValidName

        public static boolean isValidName​(String name)
        Check to see if a string is a valid Name according to [5] in the XML 1.0 Recommendation
        Parameters:
        name - string to check
        Returns:
        true if name is a valid Name

      • isValidNCName

        public static boolean isValidNCName​(String ncName)
        Check to see if a string is a valid NCName according to [4] from the XML Namespaces 1.0 Recommendation
        Parameters:
        ncName - string to check
        Returns:
        true if name is a valid NCName