annotate bin/cek.rb @ 526:f579b5310a1b

Add script to map linux ata drive numbering.
author edogawaconan <me@myconan.net>
date Sat, 09 Aug 2014 00:24:45 +0900
parents a0f4a3e15322
children
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1 #!/usr/bin/env ruby
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2 require 'zlib'
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3
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4 class Cek
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5 CRC32_BLOCK = 2 ** 20
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6
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7 attr_accessor :files
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8
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9 def crc32(filepath)
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10 file = File.open filepath, 'rb'
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11 crc32 = 0
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12 while (line = file.read(CRC32_BLOCK)) do
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13 crc32 = Zlib.crc32(line, crc32)
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14 end
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15 file.close
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16
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17 format "%08X", crc32.to_i
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18 end
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19
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20 def print_result
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21 results = Hash.new(0)
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22 files.each do |f|
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23 time_start = Time.now
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24 if File.readable?(f) && File.file?(f) then
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25 hash = crc32 f
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26 size = File.size f
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27 /(\[|\()(?<filename_hash>\p{XDigit}{8})(\]|\))/ =~ f
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28 result =
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29 if filename_hash
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30 if filename_hash == hash
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31 :ok
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32 else
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33 :fail
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34 end
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35 else
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36 :missing_hash
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37 end
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38 output = hash
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39 case result
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40 when :ok then output << " - OK!"
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41 when :fail then output << " - ERROR - should be #{filename_hash}"
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42 end
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43 else
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44 result = :unreadable
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45 output = "not a file or unreadable"
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46 end
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47 process_time = Time.now - time_start
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48 size ||= 0
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49 size_mb = size.to_f / 1_000_000
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50 speed = (size_mb.to_f / process_time)
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51 results[result] += 1
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52 puts "#{f}: #{output} (#{format "%.2f", size_mb} MB / #{format "%.2f", process_time} s / #{format "%.2f", speed} MB/s)"
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53 end
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54 puts ("-" * 50)
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55 puts "Files ok: #{results[:ok]}"
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56 puts "Files broken: #{results[:fail]}"
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57 puts "Files without crc information: #{results[:missing_hash]}"
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58 puts "Files unreadable or not a file: #{results[:unreadable]}"
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59 end
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60
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61 def initialize(*files)
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62 self.files = files.flatten
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63 @stats = {}
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64 end
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65
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66 def self.run(*files)
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67 new(files).print_result
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68 end
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69 end
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70
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71 Cek.run(ARGV) if __FILE__ == $0