simpleISBN

Go library for parsing, validating, and converting ISBN numbers.

Features

• Bidirectional conversion
  • ISBN-10 → ISBN-13
  • ISBN-13 → ISBN-10 (only for the 978 prefix)
• Normalization
  • Strips hyphens and ISBN prefix case‑insensitively
  • Accepts lowercase x or uppercase X in ISBN-10 check digit
• Validation
  • Verifies checksums for both ISBN-10 and ISBN-13
• Convenience
  • String() method for pretty-printing

Installation

go get github.com/GianniBYoung/simpleISBN

Usage

1. Import it:

import "github.com/GianniBYoung/simpleISBN"

2. Create an Instance

isbn, _ := simpleISBN.NewISBN("153432593X")

fmt.Println(isbn.ISBN13Number)
fmt.Println(isbn)

3. Or Just Convert an ISBN

testISBN10 := "153432593X"
testISBN13 := "9781534325937"
// 10 -> 13
isbn_13, _ := simpleISBN.ConvertISBN(testISBN10, simpleISBN.ISBN13)
// 13 -> 10
isbn_10, _ := simpleISBN.ConvertISBN(testISBN13, simpleISBN.ISBN10)
fmt.Println("Here is the ISBN-13: " + isbn_13)
fmt.Println("Here is the ISBN-10: " + isbn_10)