118 lines
2.6 KiB
Ruby
118 lines
2.6 KiB
Ruby
# frozen_string_literal: true
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require 'optparse'
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require 'etc'
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COLUMNS = 3
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SIZE_INDENT = 3
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def run
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listed_filenames = list_filenames
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filenames_matrix = slice_filenames(listed_filenames)
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filled_filenames = fill_filenames(filenames_matrix)
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arrange_filenames(filled_filenames)
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end
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def list_filenames
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params = ARGV.getopts('a', 'r', 'l')
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flags = params['a'] ? File::FNM_DOTMATCH : 0
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filenames = Dir.glob('*', flags)
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params['l'] ? ownerinfo(filenames) : filenames
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if params['r']
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filenames.reverse
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else
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filenames
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end
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end
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def ownerinfo(filenames)
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filenames.each do |file|
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file_stat = File::Stat.new(file)
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file_type(file_stat)
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permission(file_stat)
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print " #{file_stat.nlink}"
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print " #{Etc.getpwuid(file_stat.uid).name}"
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print " #{Etc.getgrgid(file_stat.gid).name}"
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print " #{file_stat.size}".rjust(file_size(filenames))
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timestamp(file_stat)
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symbolic(file)
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puts
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end
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end
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def symbolic(file)
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if File.lstat(file).symlink?
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print " #{file} -> #{File.readlink(file)}"
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else
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print " #{file}"
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end
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end
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def permission(file_stat)
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(-3..-1).each do |index|
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case file_stat.mode.to_s(8)[index]
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when '0' then print '---'
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when '1' then print '--x'
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when '2' then print '-w-'
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when '3' then print '-wx'
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when '4' then print 'r--'
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when '5' then print 'r-x'
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when '6' then print 'rw-'
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when '7' then print 'rwx'
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end
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end
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end
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def file_type(file_stat)
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case file_stat.ftype
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when 'file'
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print '-'
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when 'directory'
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print 'd'
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when 'characterSpecial'
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print 'c'
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when 'fifo'
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print 'p'
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when 'link'
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print 'l'
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when 'socket'
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print 's'
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end
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end
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def file_size(filenames)
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filenames.map { |file| File.size(file) }.max.to_s.length + SIZE_INDENT
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end
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def timestamp(file_stat)
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if Time.now - file_stat.mtime >= (60 * 60 * 24 * (365 / 2.0)) || (Time.now - file_stat.mtime).negative?
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print " #{file_stat.mtime.strftime('%_m %_d %Y')}"
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else
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print " #{file_stat.mtime.strftime('%_m %_d %H:%M')}"
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end
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end
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def slice_filenames(listed_filenames)
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columns_size = listed_filenames.size.ceildiv(COLUMNS)
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listed_filenames.each_slice(columns_size).to_a
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end
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def fill_filenames(filenames_matrix)
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array_size = filenames_matrix.map(&:size).max
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filenames_matrix.each do |slice|
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slice << '' while slice.size < array_size
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end
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filenames_matrix.transpose
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end
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def arrange_filenames(filled_filenames)
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filenames_count = filled_filenames.flatten.map(&:size).max
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filled_filenames.each do |arrange|
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arrange.each do |arranged|
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print arranged.ljust(filenames_count + 5)
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end
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puts
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end
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end
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run
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