Class: Bisac::POLineItem

Inherits:
Object
  • Object
show all
Includes:
Utils
Defined in:
lib/bisac/po_line_item.rb

Overview

represents a single line on the purchase order. Has attributes like price, qty and description

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#author ⇒ Object

Returns the value of attribute author.



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# File 'lib/bisac/po_line_item.rb', line 12

def author
  @author
end

#catalogue_code ⇒ Object

Returns the value of attribute catalogue_code.



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# File 'lib/bisac/po_line_item.rb', line 11

def catalogue_code
  @catalogue_code
end

#isbn ⇒ Object

Returns the value of attribute isbn.



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# File 'lib/bisac/po_line_item.rb', line 13

def isbn
  @isbn
end

#line_item_number ⇒ Object

Returns the value of attribute line_item_number.



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# File 'lib/bisac/po_line_item.rb', line 10

def line_item_number
  @line_item_number
end

#po_number ⇒ Object

Returns the value of attribute po_number.



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# File 'lib/bisac/po_line_item.rb', line 10

def po_number
  @po_number
end

#price ⇒ Object

Returns the value of attribute price.



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# File 'lib/bisac/po_line_item.rb', line 11

def price
  @price
end

#qty ⇒ Object

Returns the value of attribute qty.



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# File 'lib/bisac/po_line_item.rb', line 11

def qty
  @qty
end

#sequence_number ⇒ Object

Returns the value of attribute sequence_number.



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# File 'lib/bisac/po_line_item.rb', line 10

def sequence_number
  @sequence_number
end

#title ⇒ Object

Returns the value of attribute title.



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# File 'lib/bisac/po_line_item.rb', line 12

def title
  @title
end

Class Method Details

.load_from_string(data) ⇒ Object

returns a new Bisac::POLineItem object using the data passed in as a string refer to the bisac spec for the expected format of the string

Raises:

  • (ArgumentError) 


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# File 'lib/bisac/po_line_item.rb', line 17

def self.load_from_string(data)
  raise ArgumentError, 'data must be a string' unless data.kind_of? String
  data.strip!

  item = self.new

  item.sequence_number = data[2,5].to_i
  item.po_number = data[7,13].strip
  item.line_item_number = data[21,10].strip

  # prefer the 13 digit ISBN if it exists (it's a non-standard, Pacstream extension)
  # fallback to the ISBN10
  item.isbn = data[80,13]
  item.isbn ||= data[31,10]
  item.isbn.strip!
  item.qty = data[41,5].to_i
  item.catalogue_code = data[46,1].strip
  item.price = BigDecimal.new(data[47,6])

  return item
end

Instance Method Details

#isbn10 ⇒ Object 



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# File 'lib/bisac/po_line_item.rb', line 54

def isbn10
  if isbn? && @isbn[0,3] == "978"
    ISBN10.complete(@isbn[3,9])
  else
    @isbn
  end
end

#isbn? ⇒ Boolean

is the isbn for this product valid?

Returns:

  • (Boolean) 


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# File 'lib/bisac/po_line_item.rb', line 50

def isbn?
  EAN13.valid?(@isbn)
end

#to_s ⇒ Object 



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# File 'lib/bisac/po_line_item.rb', line 62

def to_s
  lines = [""]
  lines[0] << "40"
  lines[0] << @sequence_number.to_s.rjust(5,"0")
  lines[0] << " "
  lines[0] << @po_number.to_s.ljust(11," ")
  lines[0] << " " # TODO
  lines[0] << "Y" # TODO
  lines[0] << @line_item_number.to_s.rjust(10,"0")
  lines[0] << pad_trunc(isbn10, 10)
  lines[0] << @qty.to_s.rjust(5, "0")
  lines[0] << "00000000000000000000000000000" # TODO
  lines[0] << "     "

  # if we're ordering a valid ISBN, append a non-standard
  # ISBN13 to the line
  if isbn?
    lines[0] << @isbn
  end

  if @title && @title.to_s.size > 0
    lines << ""
    lines[1] << "41"
    lines[1] << (@sequence_number + 1).to_s.rjust(5,"0")
    lines[1] << " "
    lines[1] << @po_number.to_s.ljust(11," ")
    lines[1] << "    "
    lines[1] << pad_trunc(@title, 30)
  end

  if @author && @author.to_s.size > 0
    lines << ""
    lines[2] << "42"
    lines[2] << (@sequence_number + 2).to_s.rjust(5,"0")
    lines[2] << " "
    lines[2] << @po_number.to_s.ljust(11," ")
    lines[2] << "                  " # TODO
    lines[2] << pad_trunc(@author, 30)
  end

  lines.join("\n")
end