Package com.helger.commons.text.util

Class ABNF

java.lang.Object
com.helger.commons.text.util.ABNF
@Immutable public final class ABNF extends Object
This class contains the ABNF (RFC 5234 https://tools.ietf.org/html/rfc5234) core rules. All checks can be performed for values in the range 0 ≤ x ≤ 127.
Author:
Philip Helger

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    CHECK_RANGE_MAX_INCL
     
    static final int
    CHECK_RANGE_MIN_INCL
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static boolean
    isAlpha(int nCP)
    Check if the passed code point matches the following rules: %x41-5A / %x61-7A ; A-Z / a-z
    static boolean
    isBit(int nCP)
    Check if the passed code point matches the following rules: "0" / "1"
    static boolean
    isChar(int nCP)
    Check if the passed code point matches the following rules: %x01-7F → any 7-bit US-ASCII character, excluding NUL
    static boolean
    isCR(int nCP)
    Check if the passed code point matches the following rules: %x0D → carriage return
    static boolean
    isCtl(int nCP)
    Check if the passed code point matches the following rules: %x00-1F / %x7F → controls
    static boolean
    isDigit(int nCP)
    Check if the passed code point matches the following rules: %x30-39 → 0-9
    static boolean
    isDQuote(int nCP)
    Check if the passed code point matches the following rules: %x22 → " (Double Quote)
    static boolean
    isHexDigit(int nCP)
    Check if the passed code point matches the following rules: DIGIT / "A" / "B" / "C" / "D" / "E" / "F"
    static boolean
    isHexDigitCaseInsensitive(int nCP)
    Check if the passed code point matches the following rules: DIGIT / "A" / "B" / "C" / "D" / "E" / "F" / "a" / "b" / "c" / "d" / "e" / "f"
    Note: this is a non-standard extension!
    static boolean
    isHTab(int nCP)
    Check if the passed code point matches the following rules: %x09 → horizontal tab
    static boolean
    isLF(int nCP)
    Check if the passed code point matches the following rules: %x0A → linefeed
    static boolean
    isOctet(int nCP)
    Check if the passed code point matches the following rules: %x00-FF → 8 bits of data
    static boolean
    isSP(int nCP)
    Check if the passed code point matches the following rules: %x20
    static boolean
    isVChar(int nCP)
    Check if the passed code point matches the following rules: %x21-7E → visible (printing) characters
    static boolean
    isWSP(int nCP)
    Check if the passed code point matches the following rules: SP / HTAB → white space

    Methods inherited from class java.lang.Object

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

  • Field Details

  • Method Details

    • isAlpha

      public static boolean isAlpha(int nCP)
      Check if the passed code point matches the following rules: %x41-5A / %x61-7A ; A-Z / a-z
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules

    • isBit

      public static boolean isBit(int nCP)
      Check if the passed code point matches the following rules: "0" / "1"
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules

    • isChar

      public static boolean isChar(int nCP)
      Check if the passed code point matches the following rules: %x01-7F → any 7-bit US-ASCII character, excluding NUL
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules

    • isCR

      public static boolean isCR(int nCP)
      Check if the passed code point matches the following rules: %x0D → carriage return
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules

    • isCtl

      public static boolean isCtl(int nCP)
      Check if the passed code point matches the following rules: %x00-1F / %x7F → controls
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules

    • isDigit

      public static boolean isDigit(int nCP)
      Check if the passed code point matches the following rules: %x30-39 → 0-9
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules

    • isDQuote

      public static boolean isDQuote(int nCP)
      Check if the passed code point matches the following rules: %x22 → " (Double Quote)
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules

    • isHexDigit

      public static boolean isHexDigit(int nCP)
      Check if the passed code point matches the following rules: DIGIT / "A" / "B" / "C" / "D" / "E" / "F"
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules
      See Also:

    • isHexDigitCaseInsensitive

      public static boolean isHexDigitCaseInsensitive(int nCP)
      Check if the passed code point matches the following rules: DIGIT / "A" / "B" / "C" / "D" / "E" / "F" / "a" / "b" / "c" / "d" / "e" / "f"
      Note: this is a non-standard extension!
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules
      See Also:

    • isHTab

      public static boolean isHTab(int nCP)
      Check if the passed code point matches the following rules: %x09 → horizontal tab
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules

    • isLF

      public static boolean isLF(int nCP)
      Check if the passed code point matches the following rules: %x0A → linefeed
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules

    • isOctet

      public static boolean isOctet(int nCP)
      Check if the passed code point matches the following rules: %x00-FF → 8 bits of data
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules

    • isSP

      public static boolean isSP(int nCP)
      Check if the passed code point matches the following rules: %x20
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules

    • isVChar

      public static boolean isVChar(int nCP)
      Check if the passed code point matches the following rules: %x21-7E → visible (printing) characters
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules

    • isWSP

      public static boolean isWSP(int nCP)
      Check if the passed code point matches the following rules: SP / HTAB → white space
      Parameters:
      nCP - Code point to check.
      Returns:
      true if it matches the rules