XML11Char (Xerces2 Implementation)
Date: 2018-10-16

org.apache.xerces.util

## Class XML11Char

- java.lang.Object
- - org.apache.xerces.util.XML11Char

-     public class XML11Char
      extends java.lang.Object

  This class defines the basic properties of characters in XML 1.1. The data in this class can be used to verify that a character is a valid XML 1.1 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. Using the character as an index into the `XML11CHARS` 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.

  Version:
    $Id: XML11Char.java 674378 2008-07-07 00:52:45Z mrglavas $
  Author:
    Glenn Marcy, IBM, Andy Clark, IBM, Arnaud Le Hors, IBM, Neil Graham, IBM, Michael Glavassevich, IBM

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static int` | `MASK_XML11_CONTENT` XML 1.1 content for external entities (valid - "special" chars - control chars)
    `static int` | `MASK_XML11_CONTENT_INTERNAL` XML 1.1 content for internal entities (valid - "special" chars)
    `static int` | `MASK_XML11_CONTROL` XML 1.1 control character mask
    `static int` | `MASK_XML11_NAME` XML 1.1 Name character mask.
    `static int` | `MASK_XML11_NAME_START` XML 1.1 Name start character mask.
    `static int` | `MASK_XML11_NCNAME` XML namespaces 1.1 NCName
    `static int` | `MASK_XML11_NCNAME_START` XML namespaces 1.1 NCNameStart
    `static int` | `MASK_XML11_SPACE` XML 1.1 Space character mask.
    `static int` | `MASK_XML11_VALID` XML 1.1 Valid character mask.

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `XML11Char()`

  - ### Method Summary

    All Methods Static Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static boolean` | `isXML11Content(int c)` Returns true if the specified character can be considered content in an external parsed entity.
    `static boolean` | `isXML11InternalEntityContent(int c)` Returns true if the specified character can be considered content in an internal parsed entity.
    `static boolean` | `isXML11Invalid(int c)` Returns true if the specified character is invalid.
    `static boolean` | `isXML11Name(int c)` Returns true if the specified character is a valid name character as defined by production [4a] in the XML 1.1 specification.
    `static boolean` | `isXML11NameHighSurrogate(int c)` Returns whether the given character is a valid high surrogate for a name character.
    `static boolean` | `isXML11NameStart(int c)` Returns true if the specified character is a valid name start character as defined by production [4] in the XML 1.1 specification.
    `static boolean` | `isXML11NCName(int c)` Returns true if the specified character is a valid NCName character as defined by production [5] in Namespaces in XML 1.1 recommendation.
    `static boolean` | `isXML11NCNameStart(int c)` Returns true if the specified character is a valid NCName start character as defined by production [4] in Namespaces in XML 1.1 recommendation.
    `static boolean` | `isXML11Space(int c)` Returns true if the specified character is a space character as amdended in the XML 1.1 specification.
    `static boolean` | `isXML11Valid(int c)` Returns true if the specified character is valid.
    `static boolean` | `isXML11ValidLiteral(int c)` Returns true if the specified character is valid and permitted outside of a character reference.
    `static boolean` | `isXML11ValidName(java.lang.String name)` Check to see if a string is a valid Name according to [5] in the XML 1.1 Recommendation
    `static boolean` | `isXML11ValidNCName(java.lang.String ncName)` Check to see if a string is a valid NCName according to [4] from the XML Namespaces 1.1 Recommendation
    `static boolean` | `isXML11ValidNmtoken(java.lang.String nmtoken)` Check to see if a string is a valid Nmtoken according to [7] in the XML 1.1 Recommendation

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### MASK_XML11_VALID

          public static final int MASK_XML11_VALID

      XML 1.1 Valid character mask.
      See Also:
        Constant Field Values

    - #### MASK_XML11_SPACE

          public static final int MASK_XML11_SPACE

      XML 1.1 Space character mask.
      See Also:
        Constant Field Values

    - #### MASK_XML11_NAME_START

          public static final int MASK_XML11_NAME_START

      XML 1.1 Name start character mask.
      See Also:
        Constant Field Values

    - #### MASK_XML11_NAME

          public static final int MASK_XML11_NAME

      XML 1.1 Name character mask.
      See Also:
        Constant Field Values

    - #### MASK_XML11_CONTROL

          public static final int MASK_XML11_CONTROL

      XML 1.1 control character mask
      See Also:
        Constant Field Values

    - #### MASK_XML11_CONTENT

          public static final int MASK_XML11_CONTENT

      XML 1.1 content for external entities (valid - "special" chars - control chars)
      See Also:
        Constant Field Values

    - #### MASK_XML11_NCNAME_START

          public static final int MASK_XML11_NCNAME_START

      XML namespaces 1.1 NCNameStart
      See Also:
        Constant Field Values

    - #### MASK_XML11_NCNAME

          public static final int MASK_XML11_NCNAME

      XML namespaces 1.1 NCName
      See Also:
        Constant Field Values

    - #### MASK_XML11_CONTENT_INTERNAL

          public static final int MASK_XML11_CONTENT_INTERNAL

      XML 1.1 content for internal entities (valid - "special" chars)
      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### XML11Char

          public XML11Char()

  - ### Method Detail

    - #### isXML11Space

          public static boolean isXML11Space(int c)

      Returns true if the specified character is a space character as amdended in the XML 1.1 specification.
      Parameters:
        `c` - The character to check.

    - #### isXML11Valid

          public static boolean isXML11Valid(int c)

      Returns true if the specified character is valid. This method also checks the surrogate character range from 0x10000 to 0x10FFFF.

      If the program chooses to apply the mask directly to the `XML11CHARS` array, then they are responsible for checking the surrogate character range.

      Parameters:
        `c` - The character to check.

    - #### isXML11Invalid

          public static boolean isXML11Invalid(int c)

      Returns true if the specified character is invalid.
      Parameters:
        `c` - The character to check.

    - #### isXML11ValidLiteral

          public static boolean isXML11ValidLiteral(int c)

      Returns true if the specified character is valid and permitted outside of a character reference. That is, this method will return false for the same set as isXML11Valid, except it also reports false for "control characters".
      Parameters:
        `c` - The character to check.

    - #### isXML11Content

          public static boolean isXML11Content(int c)

      Returns true if the specified character can be considered content in an external parsed entity.
      Parameters:
        `c` - The character to check.

    - #### isXML11InternalEntityContent

          public static boolean isXML11InternalEntityContent(int c)

      Returns true if the specified character can be considered content in an internal parsed entity.
      Parameters:
        `c` - The character to check.

    - #### isXML11NameStart

          public static boolean isXML11NameStart(int c)

      Returns true if the specified character is a valid name start character as defined by production [4] in the XML 1.1 specification.
      Parameters:
        `c` - The character to check.

    - #### isXML11Name

          public static boolean isXML11Name(int c)

      Returns true if the specified character is a valid name character as defined by production [4a] in the XML 1.1 specification.
      Parameters:
        `c` - The character to check.

    - #### isXML11NCNameStart

          public static boolean isXML11NCNameStart(int c)

      Returns true if the specified character is a valid NCName start character as defined by production [4] in Namespaces in XML 1.1 recommendation.
      Parameters:
        `c` - The character to check.

    - #### isXML11NCName

          public static boolean isXML11NCName(int c)

      Returns true if the specified character is a valid NCName character as defined by production [5] in Namespaces in XML 1.1 recommendation.
      Parameters:
        `c` - The character to check.

    - #### isXML11NameHighSurrogate

          public static boolean isXML11NameHighSurrogate(int c)

      Returns whether the given character is a valid high surrogate for a name character. This includes all high surrogates for characters [0x10000-0xEFFFF]. In other words everything excluding planes 15 and 16.
      Parameters:
        `c` - The character to check.

    - #### isXML11ValidName

          public static boolean isXML11ValidName(java.lang.String name)

      Check to see if a string is a valid Name according to [5] in the XML 1.1 Recommendation
      Parameters:
        `name` - string to check
      Returns:
        true if name is a valid Name

    - #### isXML11ValidNCName

          public static boolean isXML11ValidNCName(java.lang.String ncName)

      Check to see if a string is a valid NCName according to [4] from the XML Namespaces 1.1 Recommendation
      Parameters:
        `ncName` - string to check
      Returns:
        true if name is a valid NCName

    - #### isXML11ValidNmtoken

          public static boolean isXML11ValidNmtoken(java.lang.String nmtoken)

      Check to see if a string is a valid Nmtoken according to [7] in the XML 1.1 Recommendation
      Parameters:
        `nmtoken` - string to check
      Returns:
        true if nmtoken is a valid Nmtoken

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