module BookToolkit

{

"response": {
  "status": "ok",
  "version": "13",
  "label": {
    "plid": "0",
    "name": "CampusBooks.com",
    "website_id": "0",
    "website_name": "CampusBooks.com"
  },
  "page": {
    "name": "books",
    "f": "search",
    "books": {
      "page": 1,
      "limit": 1,
      "results_returned": 1,
      "total_pages": 1,
      "total_results": 1,
      "book": [
        {
          "isbn10": "0387290958",
          "isbn13": "9780387290959",
          "author": "",
          "binding": "Hardcover",
          "edition": "2006",
          "image": {
            "width": 50,
            "height": 75,
            "image": "http:\\/\\/ecx.images-amazon.com\\/images\\/I\\/512-hKSVzuL._SL75_.jpg"
          },
          "msrp": 219,
          "pages": "308",
          "publish_date": "2006-02-07",
          "publisher": "Springer",
          "rank": 2647173,
          "rating": 0,
          "title": "Orthogonal Frequency Division Multiplexing for Wireless Communications (Signals and Communication Technology)"
        }
      ]
    }
  }
}

}

{

"ISBN:9780387290959": {
  "bib_key": "ISBN:9780387290959",
  "preview": "restricted",
  "preview_url": "https://archive.org/details/algebraiccombina2003liye",
  "info_url": "http://openlibrary.org/books/OL22723183M/Orthogonal_frequency_division_mutiplexing_for_wireless_communications",
  "details": {
    "publishers": [
      "Springer"
    ],
    "pagination": "xii, 306 p. :",
    "identifiers": {
      "librarything": [
        "6252855"
      ],
      "goodreads": [
        "1539554"
      ]
    },
    "lc_classifications": [
      "TK"
    ],
    "source_records": [
      "ia:algebraiccombina2003liye"
    ],
    "title": "Orthogonal frequency division mutiplexing for wireless communications",
    "type": {
      "key": "/type/edition"
    },
    "number_of_pages": 306,
    "created": {
      "type": "/type/datetime",
      "value": "2008-12-19T12:48:38.432497"
    },
    "languages": [
      {
        "key": "/languages/eng"
      }
    ],
    "isbn_10": [
      "0387290958"
    ],
    "latest_revision": 4,
    "publish_country": "us ",
    "key": "/books/OL22723183M",
    "last_modified": {
      "type": "/type/datetime",
      "value": "2014-07-28T10:19:56.239872"
    },
    "publish_date": "2004",
    "publish_places": [
      "New York, NY"
    ],
    "works": [
      {
        "key": "/works/OL16920397W"
      }
    ],
    "ocaid": "algebraiccombina2003liye",
    "by_statement": "edited by Ye (Geoffrey) Li, Gordon Stüber.",
    "revision": 4
  }
}

}

Constants

VERSION

Public Class Methods

calculate_checksum(isbn) click to toggle source

# File lib/book_toolkit.rb, line 25
def calculate_checksum(isbn)
  isbn.gsub!(/[^(\d|X)]/, '')
  c = 0
  if isbn.length <= 10
    10.downto(2) {|i| c += isbn[10-i].to_i * i}
    c %= 11
    c = 11 - c
    c ='X' if c == 10
    return c
  elsif isbn.length <= 13
    (1..11).step(2) {|i| c += isbn[i].to_i}
    c *= 3
    (0..11).step(2) {|i| c += isbn[i].to_i}
    c = (220-c) % 10
    return c
  end
end

to_isbn13(isbn) click to toggle source

# File lib/book_toolkit.rb, line 12
def to_isbn13 isbn
  case isbn.length
  when 13
    return ISBN.thirteen isbn
  when 10
    return ISBN.thirteen isbn
  when 12
    return "#{isbn}#{BookToolkit.calculate_checksum(isbn)}"
  when 9
    return ISBN.thirteen("#{isbn}#{BookToolkit.calculate_checksum(isbn)}")
  end
end