Class: DebVersion::DebianVersion

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/deb_version/compare.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(version) ⇒ DebianVersion

Returns a new instance of DebianVersion.



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# File 'lib/deb_version/compare.rb', line 9

def initialize(version)
  @version = version
  @epoch = 0
  @debian_revision = ""

  if @version.include? ":"
    @epoch, @version = @version.split(":")
    @epoch = @epoch.to_i
  end

  if @version.include? "-"
    @upstream_version, _, @debian_revision = @version.rpartition("-")
  else
    @upstream_version = @version
  end
end

Instance Attribute Details

#debian_revision ⇒ Object (readonly)

Returns the value of attribute debian_revision.



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# File 'lib/deb_version/compare.rb', line 5

def debian_revision
  @debian_revision
end

#epoch ⇒ Object (readonly)

Returns the value of attribute epoch.



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# File 'lib/deb_version/compare.rb', line 5

def epoch
  @epoch
end

#upstream_version ⇒ Object (readonly)

Returns the value of attribute upstream_version.



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# File 'lib/deb_version/compare.rb', line 5

def upstream_version
  @upstream_version
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/deb_version/compare.rb', line 74

def <=>(other)
  return epoch <=> other.epoch if epoch != other.epoch

  result = compare_strings(upstream_version, other.upstream_version)

  return result if result != 0

  return compare_strings(debian_revision, other.debian_revision) if debian_revision || other.debian_revision

  0
end

#compare_strings(version1, version2) ⇒ Object 



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# File 'lib/deb_version/compare.rb', line 42

def compare_strings(version1, version2)
  v1 = version1.chars
  v2 = version2.chars
  while !v1.empty? || !v2.empty?
    p1 = get_non_digit_prefix(v1)
    p2 = get_non_digit_prefix(v2)
    if p1 != p2
      loop do
        c1 = p1.shift
        c2 = p2.shift
        break if c1.nil? && c2.nil?

        o1 = DebVersion::ORDER_MAPPING.fetch(c1 || "")
        o2 = DebVersion::ORDER_MAPPING.fetch(c2 || "")
        if o1 < o2
          return -1
        elsif o1 > o2
          return 1
        end
      end
    end
    d1 = get_digit_prefix(v1)
    d2 = get_digit_prefix(v2)
    if d1 < d2
      return -1
    elsif d1 > d2
      return 1
    end
  end
  0
end

#get_digit_prefix(characters) ⇒ Object 



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# File 'lib/deb_version/compare.rb', line 30

def get_digit_prefix(characters)
  value = 0
  value = (value * 10) + characters.shift.to_i while characters && DebVersion::DIGITS.include?(characters[0])
  value
end

#get_non_digit_prefix(characters) ⇒ Object 



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# File 'lib/deb_version/compare.rb', line 36

def get_non_digit_prefix(characters)
  prefix = []
  prefix << characters.shift while characters.size.positive? && !DebVersion::DIGITS.include?(characters[0])
  prefix
end

#to_a ⇒ Object 



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# File 'lib/deb_version/compare.rb', line 26

def to_a
  [@epoch, @upstream_version, @debian_revision]
end