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module SemanticRange
class PreRelease
attr_reader :parts
def initialize(input)
@parts = parse(input)
end
def parse(str)
str.to_s.split('.').map { |id| convert(id) }
end
def convert(str)
str.match(/^[0-9]+$/) ? str.to_i : str
end
def length
parts.length
end
def empty?
parts.empty?
end
def to_s
parts.join '.'
end
def clear!
@parts = []
end
def zero!
@parts = [0]
end
def <=>(other)
return unless other.is_a?(self.class)
return -1 if parts.any? && !other.parts.any?
return 1 if !parts.any? && other.parts.any?
return 0 if !parts.any? && !other.parts.any?
i = 0
while true
a = parts[i]
b = other.parts[i]
if a.nil? && b.nil?
return 0
elsif b.nil?
return 1
elsif a.nil?
return -1
elsif a == b
else
return Version.compare_identifiers(a, b)
end
i += 1
end
end
def last_number_index
parts.rindex { |e| e.is_a? Fixnum }
end
def increment!(identifier = nil)
if empty?
zero!
else
if last_number_index
@parts[last_number_index] += 1
else
@parts << 0
end
end
if identifier
# 1.2.0-beta.1 bumps to 1.2.0-beta.2,
# 1.2.0-beta.fooblz or 1.2.0-beta bumps to 1.2.0-beta.0
if parts[0] == identifier
unless parts[1].kind_of?(Fixnum)
@parts = [identifier, 0]
end
else
@parts = [identifier, 0]
end
end
end
end
end
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