27 lines
616 B
Ruby
Executable file
27 lines
616 B
Ruby
Executable file
#!/usr/bin/ruby
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require 'date'
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require 'optparse'
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year = Date.today.year
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month = Date.today.month
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opt = OptionParser.new
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opt.on('-m int') { |v| month = v.to_i }
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opt.on('-y int') { |v| year = v.to_i }
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opt.parse!(ARGV)
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startwday = Date.new(year, month, 1).wday # その月の最初の曜日
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enddate = Date.new(year, month, -1).day # その月の最後の曜日
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week = %w[日 月 火 水 木 金 土]
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puts month.to_s.rjust(8) + '月 ' + year.to_s
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puts week.join(' ')
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print ' ' * startwday
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days = startwday
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(1..enddate).each do |day|
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print day.to_s.rjust(2) + ' '
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days += 1
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print "\n" if days % 7 == 0
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end
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