ReservedLdhLabel

org.minidns.dnslabel.ReservedLdhLabel

All Implemented Interfaces:: CharSequence, Comparable<DnsLabel>

Direct Known Subclasses:: XnLabel

public class ReservedLdhLabelextends LdhLabel

A reserved LDH label (R-LDH label), which have the property that they contain "--" in the third and fourth characters.

Nested Class Summary
Nested classes/interfaces inherited from class DnsLabel
DnsLabel.LabelToLongException
Modifier and Type
Class
Description
static class
DnsLabel.LabelToLongException
Thrown when a DNS label exceeds the maximum length.
Field Summary
Fields inherited from class DnsLabel
label, MAX_LABEL_LENGTH_IN_OCTETS, WILDCARD_LABEL
Modifier and Type
Field
Description
final String
label
The label string.
static final int
MAX_LABEL_LENGTH_IN_OCTETS
The maximum length of a DNS label in octets.
static final DnsLabel
WILDCARD_LABEL
The wildcard label.
Constructor Summary
Constructors
Modifier
Constructor
Description
protected
ReservedLdhLabel(String label)
Wrap a label already known to carry the reserved "--" pattern.
Method Summary
Public Methods
Modifier and Type
Method
Description
static boolean
isReservedLdhLabel(String label)
Test whether a label is both well-formed LDH and reserved.
(package private) static boolean
isReservedLdhLabelInternal(String label)
Test for the reserved "--" pattern, skipping the LDH syntax check.
Methods inherited from class LdhLabel
fromInternal, isLdhLabel
Modifier and Type
Method
Description
protected static LdhLabel
fromInternal(String label)
Creates an LdhLabel from internal representation
static boolean
isLdhLabel(String label)
Determine if the given label is an LDH (letters, digits, hyphen) label.
Methods inherited from class DnsLabel
asLowercaseVariant, compareTo, consistsOnlyOfLettersDigitsAndHypen, consistsOnlyOfLettersDigitsHypenAndUnderscore, equals, from, from, getInternationalizedRepresentation, getInternationalizedRepresentationInternal, getLabelType, getRawLabel, hashCode, isIdnAcePrefixed, toSafeRepesentation, toString, writeToBoas
Modifier and Type
Method
Description
final DnsLabel
asLowercaseVariant()
Get the lowercase variant of this label.
final int
compareTo(DnsLabel other)
Order labels case-insensitively, ignoring letter case.
static boolean
consistsOnlyOfLettersDigitsAndHypen(String string)
Check if a string consists of only letters, digits, and hyphens.
static boolean
consistsOnlyOfLettersDigitsHypenAndUnderscore(String string)
Check if a string consists of only letters, digits, hyphens, and underscores.
final boolean
equals(Object other)
Compare the label text against another label.
static DnsLabel
from(String label)
Create a DnsLabel from a string.
static DnsLabel[]
from(String[] labels)
Create DnsLabel array from string array.
final String
getInternationalizedRepresentation()
Get the internationalized representation of this label.
protected String
getInternationalizedRepresentationInternal()
Gets the internal internationalized representation.
final String
getLabelType()
Get the type of this label.
final String
getRawLabel()
Get the raw label.
final int
hashCode()
Hash the label text.
static boolean
isIdnAcePrefixed(String string)
Check if a string has the IDN ACE prefix.
static String
toSafeRepesentation(String dnsLabel)
Convert a DNS label string to a safe representation.
final String
toString()
Render the label with every character outside the LDH set escaped.
final void
writeToBoas(ByteArrayOutputStream byteArrayOutputStream)
Write this label to a ByteArrayOutputStream prefixed by its length.
Methods inherited from class SafeCharSequence
charAt, length, subSequence, toSafeString
Modifier and Type
Method
Description
final char
charAt(int index)
Returns one character of the safe string form.
final int
length()
Counts the characters of the safe string form.
final CharSequence
subSequence(int start, int end)
Returns a safe substring of the safe string form.
String
toSafeString()
Return a safe string representation.
Methods inherited from class Object
clone, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface CharSequence
chars, codePoints, getChars, isEmpty

Constructor Details
- ReservedLdhLabel
  protected ReservedLdhLabel(String label)
  Wrap a label already known to carry the reserved "--" pattern.
  Parameters:
  label - the LDH label string, which must carry "--" in its third and fourth characters
Method Details
- isReservedLdhLabel
  public static boolean isReservedLdhLabel(String label)
  Test whether a label is both well-formed LDH and reserved.
  Parameters:
  label - the candidate label string, checked for LDH syntax before the reserved "--" pattern is tested
  Returns:
  true if the string is a well-formed LDH label with "--" in its third and fourth characters
- isReservedLdhLabelInternal
  static boolean isReservedLdhLabelInternal(String label)
  Test for the reserved "--" pattern, skipping the LDH syntax check.
  Parameters:
  label - the label string, assumed to be already known to be a well-formed LDH label
  Returns:
  true if it is at least four characters long and its third and fourth characters are both '-'

Nested Class Summary

Nested classes/interfaces inherited from class DnsLabel

Field Summary

Fields inherited from class DnsLabel

Constructor Summary

Method Summary

Methods inherited from class LdhLabel

Methods inherited from class DnsLabel

Methods inherited from class SafeCharSequence

Methods inherited from class Object

Methods inherited from interface CharSequence

Constructor Details

Method Details

isReservedLdhLabel

isReservedLdhLabelInternal