org.apache.xmlbeans.impl.common.XMLChar

public 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.

Version:: $Id: XMLChar.java 111285 2004-12-08 16:54:26Z cezar $
Author:: Glenn Marcy, IBM, Andy Clark, IBM, Eric Ye, IBM, Arnaud Le Hors, IBM, Rahul Srivastava, Sun Microsystems Inc.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`MASK_CONTENT`	Content character mask.
`static int`	`MASK_NAME`	Name character mask.
`static int`	`MASK_NAME_START`	Name start character mask.
`static int`	`MASK_NCNAME`	NCName character mask.
`static int`	`MASK_NCNAME_START`	NCName start character mask.
`static int`	`MASK_PUBID`	Pubid character mask.
`static int`	`MASK_SPACE`	Space character mask.
`static int`	`MASK_VALID`	Valid character mask.

Constructor Summary

Constructors

Constructor Description

XMLChar()

Method Summary

Modifier and Type	Method	Description
`static char`	`highSurrogate(int c)`	Returns the high surrogate of a supplemental character
`static boolean`	`isContent(int c)`	Returns true if the specified character can be considered content.
`static boolean`	`isHighSurrogate(int c)`	Returns whether the given character is a high surrogate
`static boolean`	`isInvalid(int c)`	Returns true if the specified character is invalid.
`static boolean`	`isLowSurrogate(int c)`	Returns whether the given character is a low surrogate
`static boolean`	`isMarkup(int c)`	Returns true if the specified character can be considered markup.
`static boolean`	`isName(int c)`	Returns true if the specified character is a valid name character as defined by production [4] in the XML 1.0 specification.
`static boolean`	`isNameStart(int c)`	Returns true if the specified character is a valid name start character as defined by production [5] in the XML 1.0 specification.
`static boolean`	`isNCName(int c)`	Returns true if the specified character is a valid NCName character as defined by production [5] in Namespaces in XML recommendation.
`static boolean`	`isNCNameStart(int c)`	Returns true if the specified character is a valid NCName start character as defined by production [4] in Namespaces in XML recommendation.
`static boolean`	`isPubid(int c)`	Returns true if the specified character is a valid Pubid character as defined by production [13] in the XML 1.0 specification.
`static boolean`	`isSpace(int c)`	Returns true if the specified character is a space character as defined by production [3] in the XML 1.0 specification.
`static boolean`	`isSupplemental(int c)`	Returns true if the specified character is a supplemental character.
`static boolean`	`isValid(int c)`	Returns true if the specified character is valid.
`static boolean`	`isValidIANAEncoding(String ianaEncoding)`	Returns true if the encoding name is a valid IANA encoding.
`static boolean`	`isValidJavaEncoding(String javaEncoding)`	Returns true if the encoding name is a valid Java encoding.
`static boolean`	`isValidName(String name)`	Check to see if a string is a valid Name according to [5] in the XML 1.0 Recommendation
`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
`static boolean`	`isValidNmtoken(String nmtoken)`	Check to see if a string is a valid Nmtoken according to [7] in the XML 1.0 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 char`	`lowSurrogate(int c)`	Returns the low surrogate of a supplemental character
`static int`	`supplemental(char h, char l)`	Returns true the supplemental character corresponding to the given surrogates.

Methods inherited from class java.lang.Object

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

Field Details
- MASK_VALID
  
  public static final int MASK_VALID
  
  Valid character mask.
  
  See Also:
  
  Constant Field Values
- MASK_SPACE
  
  public static final int MASK_SPACE
  
  Space character mask.
  
  See Also:
  
  Constant Field Values
- MASK_NAME_START
  
  public static final int MASK_NAME_START
  
  Name start character mask.
  
  See Also:
  
  Constant Field Values
- MASK_NAME
  
  public static final int MASK_NAME
  
  Name character mask.
  
  See Also:
  
  Constant Field Values
- MASK_PUBID
  
  public static final int MASK_PUBID
  
  Pubid character mask.
  
  See Also:
  
  Constant Field Values
- MASK_CONTENT
  
  public static final int MASK_CONTENT
  
  Content character mask. Special characters are those that can be considered the start of markup, such as '<' and '&'. The various newline characters are considered special as well. All other valid XML characters can be considered content.
  This is an optimization for the inner loop of character scanning.
  
  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
Constructor Details
- XMLChar
  
  public XMLChar()
Method Details
- isSupplemental
  
  public static boolean isSupplemental(int c)
  
  Returns true if the specified character is a supplemental character.
  
  Parameters:
  
  c - The character to check.
- supplemental
  
  public static int supplemental(char h, char l)
  
  Returns true the supplemental character corresponding to the given surrogates.
  
  Parameters:
  
  h - The high surrogate.
  
  l - The low surrogate.
- highSurrogate
  
  public static char highSurrogate(int c)
  
  Returns the high surrogate of a supplemental character
  
  Parameters:
  
  c - The supplemental character to "split".
- lowSurrogate
  
  public static char lowSurrogate(int c)
  
  Returns the low surrogate of a supplemental character
  
  Parameters:
  
  c - The supplemental character to "split".
- isHighSurrogate
  
  public static boolean isHighSurrogate(int c)
  
  Returns whether the given character is a high surrogate
  
  Parameters:
  
  c - The character to check.
- isLowSurrogate
  
  public static boolean isLowSurrogate(int c)
  
  Returns whether the given character is a low surrogate
  
  Parameters:
  
  c - The character to check.
- isValid
  
  public static boolean isValid(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 CHARS array, then they are responsible for checking the surrogate character range.
  
  Parameters:
  
  c - The character to check.
- isInvalid
  
  public static boolean isInvalid(int c)
  
  Returns true if the specified character is invalid.
  
  Parameters:
  
  c - The character to check.
- isContent
  
  public static boolean isContent(int c)
  
  Returns true if the specified character can be considered content.
  
  Parameters:
  
  c - The character to check.
- isMarkup
  
  public static boolean isMarkup(int c)
  
  Returns true if the specified character can be considered markup. Markup characters include '<', '&', and '%'.
  
  Parameters:
  
  c - The character to check.
- isSpace
  
  public static boolean isSpace(int c)
  
  Returns true if the specified character is a space character as defined by production [3] in the XML 1.0 specification.
  
  Parameters:
  
  c - The character to check.
- 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.
- isNameStart
  
  public static boolean isNameStart(int c)
  
  Returns true if the specified character is a valid name start character as defined by production [5] in the XML 1.0 specification.
  
  Parameters:
  
  c - The character to check.
- isName
  
  public static boolean isName(int c)
  
  Returns true if the specified character is a valid name character as defined by production [4] in the XML 1.0 specification.
  
  Parameters:
  
  c - The character to check.
- isNCNameStart
  
  public static boolean isNCNameStart(int c)
  
  Returns true if the specified character is a valid NCName start character as defined by production [4] in Namespaces in XML recommendation.
  
  Parameters:
  
  c - The character to check.
- isNCName
  
  public static boolean isNCName(int c)
  
  Returns true if the specified character is a valid NCName character as defined by production [5] in Namespaces in XML recommendation.
  
  Parameters:
  
  c - The character to check.
- isPubid
  
  public static boolean isPubid(int c)
  
  Returns true if the specified character is a valid Pubid character as defined by production [13] in the XML 1.0 specification.
  
  Parameters:
  
  c - The character to check.
- 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
- isValidNmtoken
  
  public static boolean isValidNmtoken(String nmtoken)
  
  Check to see if a string is a valid Nmtoken according to [7] in the XML 1.0 Recommendation
  
  Parameters:
  
  nmtoken - string to check
  
  Returns:
  
  true if nmtoken is a valid Nmtoken
- isValidIANAEncoding
  
  public static boolean isValidIANAEncoding(String ianaEncoding)
  
  Returns true if the encoding name is a valid IANA encoding. This method does not verify that there is a decoder available for this encoding, only that the characters are valid for an IANA encoding name.
  
  Parameters:
  
  ianaEncoding - The IANA encoding name.
- isValidJavaEncoding
  
  public static boolean isValidJavaEncoding(String javaEncoding)
  
  Returns true if the encoding name is a valid Java encoding. This method does not verify that there is a decoder available for this encoding, only that the characters are valid for an Java encoding name.
  
  Parameters:
  
  javaEncoding - The Java encoding name.

Class XMLChar

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Details

Constructor Details

Method Details