Class: Y2Network::UdevRulePart

Inherits:
Object
  • Object
show all
Includes:
Yast2::Equatable, Yast::Logger
Defined in:
src/lib/y2network/udev_rule_part.rb

Overview

Simple class to represent a key-value pair in a UdevRule.

This class does not check whether operators or keys/values are valid or not. We can implement that logic later if required.

Constant Summary collapse

PART_REGEXP =

Regular expression to match a udev rule part

Regexp.new("\\A(?<key>[A-Za-z\{\}_]+)(?<operator>[^\"]+)\"(?<value>.+)\"\\Z")

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(key, operator, value) ⇒ UdevRulePart

Constructor

Parameters:

  • key (String) —

    Key name

  • operator (String) —

    Operator ("==", "!=", "=", "+=", "-=", ":=")

  • value (String) —

    Value to match or assign



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# File 'src/lib/y2network/udev_rule_part.rb', line 77

def initialize(key, operator, value)
  @key = key
  @operator = operator
  @value = value
end

Instance Attribute Details

#key ⇒ String

Returns Key name.

Returns:

  • (String) —

    Key name



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# File 'src/lib/y2network/udev_rule_part.rb', line 63

def key
  @key
end

#operator ⇒ String

Returns Operator. There are two comparison operators ("==", "!=") and four assignment operators ("=", "+=", "-=", ":="). See udev(7) for further information.

Returns:

  • (String) —

    Operator. There are two comparison operators ("==", "!=") and four assignment operators ("=", "+=", "-=", ":="). See udev(7) for further information.



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# File 'src/lib/y2network/udev_rule_part.rb', line 66

def operator
  @operator
end

#value ⇒ String

Returns Value to match or assign.

Returns:

  • (String) —

    Value to match or assign



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# File 'src/lib/y2network/udev_rule_part.rb', line 68

def value
  @value
end

Class Method Details

.from_string(str) ⇒ UdevRulePart

Returns udev rule object.

Parameters:

  • str (String) —

    string form of an udev rule

Returns:



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# File 'src/lib/y2network/udev_rule_part.rb', line 51

def from_string(str)
  match = PART_REGEXP.match(str)

  if match.nil?
    log.info("Not matching udev rule: #{str}")
    return
  end

  new(match[:key], match[:operator], match[:value])
end

Instance Method Details

#bus_id? ⇒ Boolean

Return whether the udev rule part is the interface bus_id or not

Returns:

  • (Boolean) 


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# File 'src/lib/y2network/udev_rule_part.rb', line 92

def bus_id?
  (key == "KERNELS") && (operator == "==")
end

#dev_port? ⇒ Boolean

Return whether the udev rule part is the interface dev_port or not

Returns:

  • (Boolean) 


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# File 'src/lib/y2network/udev_rule_part.rb', line 99

def dev_port?
  (key == "ATTR{dev_port}") && (operator == "==")
end

#mac? ⇒ Boolean

Return whether the udev rule part is the interface MAC address or not

Returns:

  • (Boolean) 


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# File 'src/lib/y2network/udev_rule_part.rb', line 106

def mac?
  (key == "ATTR{address}") && (operator == "==")
end

#name? ⇒ Boolean

Return whether the udev rule part is the interface name or not

Returns:

  • (Boolean) 


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# File 'src/lib/y2network/udev_rule_part.rb', line 113

def name?
  (key == "NAME") && (operator == "=")
end

#to_s ⇒ String

Returns an string representation of the udev rule part

Returns:

  • (String) 


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# File 'src/lib/y2network/udev_rule_part.rb', line 86

def to_s
  "#{key}#{operator}\"#{value}\""
end