62 lines
1.8 KiB
Ruby
62 lines
1.8 KiB
Ruby
# frozen_string_literal: true
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require 'optparse'
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def main
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options, filenames = parse_options
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file_stats = collect_file_stats(filenames)
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total_stats = calculate_total_stats(file_stats)
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max_widths = calculate_max_widths(file_stats + [total_stats])
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print_file_stats(file_stats, max_widths, options)
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print_file_stats([total_stats], max_widths, options) if filenames.size > 1
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end
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def parse_options
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options = {}
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OptionParser.new do |opts|
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opts.on('-l') { options[:lines] = true }
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opts.on('-w') { options[:words] = true }
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opts.on('-c') { options[:bytes] = true }
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end.parse!
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options = { bytes: true, lines: true, words: true } if options.empty?
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filenames = ARGV.empty? ? [''] : ARGV
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[options, filenames]
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end
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def collect_file_stats(filenames)
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filenames.map do |filename|
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input = filename.empty? ? ARGF.read : File.read(filename)
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{ filename: filename, lines: input.lines.count, words: input.split.size, bytes: input.bytesize }
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end
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end
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def calculate_total_stats(file_stats)
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total_stats = { filename: '合計', lines: 0, words: 0, bytes: 0 }
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file_stats.each do |stats|
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total_stats[:lines] += stats[:lines]
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total_stats[:words] += stats[:words]
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total_stats[:bytes] += stats[:bytes]
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end
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total_stats
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end
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def calculate_max_widths(all_stats)
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%i[lines words bytes].each_with_object({}) do |key, max_widths|
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max_widths[key] = all_stats.map { |stats| stats[key].to_s.length }.max
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end
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end
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def format_result(stats, max_widths, options)
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%i[lines words bytes].filter_map do |key|
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stats[key].to_s.rjust(max_widths[key]) if options[key]
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end.join(' ')
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end
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def print_file_stats(file_stats, max_widths, options)
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file_stats.each do |stats|
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result = format_result(stats, max_widths, options)
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puts "#{result} #{stats[:filename]}"
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end
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end
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main
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