Class: Version

Inherits:
Object
  • Object
show all
Defined in:
lib/atk/version.rb

Overview

create a variable for the current ruby version

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(version_as_string) ⇒ Version

Returns a new instance of Version.



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# File 'lib/atk/version.rb', line 13

def initialize(version_as_string)
    @levels = version_as_string.split('.')
    @comparable = @levels[0] =~ /\A\d+\z/
    # convert values into integers where possible
    index = -1
    for each in @levels.dup
        index += 1
        if each =~ /\A\d+\z/
            @levels[index] = each.to_i
        end
    end
    @major, @minor, @patch, *_ = @levels
end

Instance Attribute Details

#codename ⇒ Object

Returns the value of attribute codename.



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# File 'lib/atk/version.rb', line 4

def codename
  @codename
end

#levels ⇒ Object

Returns the value of attribute levels.



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# File 'lib/atk/version.rb', line 4

def levels
  @levels
end

Class Method Details

.extract_from(string) ⇒ Object 



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# File 'lib/atk/version.rb', line 6

def self.extract_from(string)
    match = string.match(/\d+\.\d+(\.\d+)*/)
    if match != nil
        return Version.new(match[0])
    end
end

Instance Method Details

#<(other_version) ⇒ Object 



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# File 'lib/atk/version.rb', line 80

def <(other_version)
    value = (self <=> other_version)
    return value && value == -1
end

#<=>(other_version) ⇒ Object 



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# File 'lib/atk/version.rb', line 44

def <=>(other_version)
    if not other_version.is_a?(Version)
        raise "When doing version comparision, both sides must be a version object"
    end
    if other_version.to_s == self.to_s
        return 0
    end
    
    if other_version.comparable? && self.comparable?
        self_levels = @levels.dup
        other_levels = other_version.levels.dup
        loop do
            if self_levels.size == 0 || other_levels.size == 0
                if self_levels.size > other_levels.size
                    return 1
                elsif self_levels.size < other_levels.size
                    return -1
                else
                    return 0
                end
            end
            comparision = self_levels.shift() <=> other_levels.shift()
            if comparision != 0
                return comparision
            end
        end
    else
        return nil
    end
end

#==(other_version) ⇒ Object 



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# File 'lib/atk/version.rb', line 85

def ==(other_version)
    value = (self <=> other_version)
    return value && value == 0
end

#>(other_version) ⇒ Object 



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# File 'lib/atk/version.rb', line 75

def >(other_version)
    value = (self <=> other_version)
    return value && value == 1
end

#comparable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/atk/version.rb', line 40

def comparable?
    return @comparable
end

#major ⇒ Object 



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# File 'lib/atk/version.rb', line 35

def major() @major end

#major=(new_value) ⇒ Object 



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# File 'lib/atk/version.rb', line 36

def major=(new_value)
    @levels[0] = new_value
end

#minor ⇒ Object 



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# File 'lib/atk/version.rb', line 31

def minor() @minor end

#minor=(new_value) ⇒ Object 



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# File 'lib/atk/version.rb', line 32

def minor=(new_value)
    @levels[1] = new_value
end

#patch ⇒ Object 



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# File 'lib/atk/version.rb', line 27

def patch() @patch end

#patch=(new_value) ⇒ Object 



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# File 'lib/atk/version.rb', line 28

def patch=(new_value)
    @levels[2] = new_value
end

#to_s ⇒ Object 



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# File 'lib/atk/version.rb', line 90

def to_s
    return @levels.map(&:to_s).join('.')
end