Module: Beaker::Shared::Semvar

Included in:
Beaker::Shared
Defined in:
lib/beaker/shared/semvar.rb

Instance Method Summary collapse

Instance Method Details

#max_version(versions, default = nil) ⇒ String?

Note:

nil values will be skipped

Note:

versions parameter will be copied so that the original won't be tampered with

Gets the max semver version from a list of them

Parameters:

  • versions (Array<String>)

    List of versions to get max from

  • default (String) (defaults to: nil)

    Default version if list is nil or empty

Returns:

  • (String, nil)

    the max string out of the versions list or the default value if the list is faulty, which can either be set or nil


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# File 'lib/beaker/shared/semvar.rb', line 49

def max_version(versions, default=nil)
  return default if !versions || versions.empty?
  versions_copy = versions.dup
  highest = versions_copy.shift
  versions_copy.each do |version|
    next if !version
    highest = version if version_is_less(highest, version)
  end
  highest
end

#version_is_less(a, b) ⇒ Boolean

Note:

3.0.0-160-gac44cfb is greater than 3.0.0, and 2.8.2

Note:

-rc being less than final builds is not yet implemented.

Is semver-ish version a less than semver-ish version b

Parameters:

  • a (String)

    A version of the from 'd.d.d.*'

  • b (String)

    A version of the form 'd.d.d.*'

Returns:

  • (Boolean)

    true if a is less than b, otherwise return false


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# File 'lib/beaker/shared/semvar.rb', line 12

def version_is_less a, b
  a_nums = a.split('-')[0].split('.')
  b_nums = b.split('-')[0].split('.')
  (0...a_nums.length).each do |i|
    if i < b_nums.length
      if a_nums[i].to_i < b_nums[i].to_i
        return true
      elsif a_nums[i].to_i > b_nums[i].to_i
        return false
      end
    else
      return false
    end
  end
  #checks all dots, they are equal so examine the rest
  a_rest = a.split('-', 2)[1]
  b_rest = b.split('-', 2)[1]
  if a_rest and b_rest and a_rest < b_rest
    return false
  elsif a_rest and not b_rest
    return false
  elsif not a_rest and b_rest
    return true
  end
  return false
end