Class: Alexandria::Scanners::CueCat

Inherits:
Object
  • Object
show all
Includes:
Logging
Defined in:
lib/alexandria/scanners/cue_cat.rb

Instance Method Summary collapse

Methods included from Logging

included, #log

Instance Method Details

#decode(data) ⇒ Object

Decodes CueCat input into ISBN The following code is adapted from Skip Rosebaugh’s public domain perl implementation.



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# File 'lib/alexandria/scanners/cue_cat.rb', line 51

def decode(data)
  data = data.chomp
  fields = data.split(".")
  fields.shift # First part is gibberish
  fields.shift # Second part is cuecat serial number
  type, code = fields.map { |field| decode_field(field) }

  if type == "IB5"
    type = "IBN"
    code = code[0, 13]
  end

  begin
    if Library.valid_upc? code
      isbn13 = Library.canonicalise_ean(code)
      code = isbn13
      type = "IBN"
    end
  rescue StandardError
    log.debug { "Cannot translate UPC (#{type}) code #{code} to ISBN" }
  end

  return code if type == "IBN"

  raise format(_("Don't know how to handle type %<type>s (barcode: %<code>s)"),
               type: type, code: code)
end

#display_name ⇒ Object 



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# File 'lib/alexandria/scanners/cue_cat.rb', line 32

def display_name
  "CueCat"
end

#match?(data) ⇒ Boolean

Checks if data looks like cuecat input

Returns:

  • (Boolean) 


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# File 'lib/alexandria/scanners/cue_cat.rb', line 37

def match?(data)
  data = data.chomp
  return false if data[-1] != "."

  fields = data.split(".")
  return false if fields.size != 4
  return false if fields[2].size != 4

  true
end

#name ⇒ Object 



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# File 'lib/alexandria/scanners/cue_cat.rb', line 28

def name
  "CueCat"
end