Module org.apache.jena.iri3986
Package org.apache.jena.rfc3986

Class Chars3986

java.lang.Object
org.apache.jena.rfc3986.Chars3986
public class Chars3986 extends Object
Characters and character classes

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final char
    EOF
    End of file/string marker - this is not a valid Unicode codepoint.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Chars3986()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static char
    charAt(CharSequence str, int x)
    String.charAt except with an EOF character, not an exception.
    static String
    displayChar(char ch)
    Return a display string for a character suitable for error messages.
    static boolean
    genDelims(char ch)
    RFC 3986 : gen-delims / sub-delims
    static int
    hexValue(char ch)
     
    static boolean
    int_isIPrivate(int ch)
     
    static boolean
    int_isUcsChar(int ch)
     
    static boolean
    isAlpha(char ch)
     
    static boolean
    isAlphaNum(char ch)
     
    static boolean
    isDigit(char ch)
     
    static boolean
    isHexDigit(char ch)
    HEXDIG = DIGIT / "A" / "B" / "C" / "D" / "E" / "F" but also lower case (non-normalized form).
    static boolean
    isHexDigitUC(char ch)
    Test for 'A' to 'F'
    static boolean
    isIAlpha(char ch)
    RFC3987: International alphabetic.
    static boolean
    isIPChar(char ch, String str, int posn)
    RFC3987 ipchar
    static boolean
    isIPrivate(char ch)
     
    static boolean
    isPChar(char ch, CharSequence str, int posn)
    Test whether ch is an RFC3986 pchar.
    static boolean
    isPctEncoded(char ch, CharSequence s, int x)
    Test whether the character at location 'x' is percent-encoded.
    static boolean
    isUcsChar(char ch)
     
    static boolean
    iunreserved(char ch)
    RFC 3987 : iunreserved
    static boolean
    percentCheck(char ch1, char ch2, CharSequence source, int idx)
    Check whether ch1 and ch2 are percent-encoding hex characters.
    static boolean
    range(int ch, int start, int finish)
    Test whether a character is in a character range (both ends inclusive)
    static boolean
    subDelims(char ch)
    RFC 3986 : sub-delims
    static boolean
    unreserved(char ch)
    RFC 3986 : unreserved

    Methods inherited from class java.lang.Object

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

  • Field Details

    • EOF

      public static final char EOF
      End of file/string marker - this is not a valid Unicode codepoint.
      See Also:

  • Constructor Details

    • Chars3986

      public Chars3986()

  • Method Details

    • isPChar

      public static boolean isPChar(char ch, CharSequence str, int posn)
      Test whether ch is an RFC3986 pchar. This may need to look ahead in the string if the character is a %.

    • isIPChar

      public static boolean isIPChar(char ch, String str, int posn)
      RFC3987 ipchar

    • isPctEncoded

      public static boolean isPctEncoded(char ch, CharSequence s, int x)
      Test whether the character at location 'x' is percent-encoded. This operation needs to look at next two characters if and only if ch is '%'.

      This function looks ahead 2 characters which will be parsed but likely they are in the L1 or L2 cache and the alternative is more complex logic (return the new character position in some way).

    • isAlpha

      public static boolean isAlpha(char ch)

    • isAlphaNum

      public static boolean isAlphaNum(char ch)

    • isIAlpha

      public static boolean isIAlpha(char ch)
      RFC3987: International alphabetic.

    • isUcsChar

      public static boolean isUcsChar(char ch)

    • int_isUcsChar

      public static boolean int_isUcsChar(int ch)

    • isIPrivate

      public static boolean isIPrivate(char ch)

    • int_isIPrivate

      public static boolean int_isIPrivate(int ch)

    • unreserved

      public static boolean unreserved(char ch)
      RFC 3986 : unreserved

    • iunreserved

      public static boolean iunreserved(char ch)
      RFC 3987 : iunreserved

    • subDelims

      public static boolean subDelims(char ch)
      RFC 3986 : sub-delims

    • genDelims

      public static boolean genDelims(char ch)
      RFC 3986 : gen-delims / sub-delims

    • displayChar

      public static String displayChar(char ch)
      Return a display string for a character suitable for error messages.

    • percentCheck

      public static boolean percentCheck(char ch1, char ch2, CharSequence source, int idx)
      Check whether ch1 and ch2 are percent-encoding hex characters.

    • charAt

      public static char charAt(CharSequence str, int x)
      String.charAt except with an EOF character, not an exception.

    • range

      public static boolean range(int ch, int start, int finish)
      Test whether a character is in a character range (both ends inclusive)

    • isDigit

      public static boolean isDigit(char ch)

    • isHexDigit

      public static boolean isHexDigit(char ch)
      HEXDIG = DIGIT / "A" / "B" / "C" / "D" / "E" / "F" but also lower case (non-normalized form). See RFC 3986 sec 6.2.2.1

    • hexValue

      public static int hexValue(char ch)

    • isHexDigitUC

      public static boolean isHexDigitUC(char ch)
      Test for 'A' to 'F'