Regular expression for an ISBN 13

Question

Hi all I\'m trying all the time to make a regular expression for XML in my .xsd.

This expression should verify an ISBN-13 number but I couldn\'t get further

Answer 1

See also ISBN on xFront :

We have created an XML Schema simpleType definition for ISBNs. This ISBN definition covers all the legal formats of ISBNs world-wide.

Answer 2

According to http://regexlib.com/REDetails.aspx?regexp_id=1747 the regular expression

ISBN(-1(?:(0)|3))?:?\x20+(?(1)(?(2)(?:(?=.{13}$)\d{1,5}([ -])\d{1,7}\3\d{1,6}\3(?:\d|x)$)|(?:(?=.{17}$)97(?:8|9)([ -])\d{1,5}\4\d{1,7}\4\d{1,6}\4\d$))|(?(.{13}$)(?:\d{1,5}([ -])\d{1,7}\5\d{1,6}\5(?:\d|x)$)|(?:(?=.{17}$)97(?:8|9)([ -])\d{1,5}\6\d{1,7}\6\d{1,6}\6\d$)))

matches both the old 10 digit ISBNs and the new 13 digit ISBNs.

You can easily (maybe not very easily) use the part of this regexp that you need.

Answer 3

ISBN(?:-13)?:?\x20*(?=.{17}$)97(?:8|9)([ -])\d{1,5}\1\d{1,7}\1\d{1,6}\1\d$

Should match:
ISBN-13: 978-1-4028-9462-6
ISBN: 978-1-4028-9462-6
ISBN-13 978-1-4028-9462-6
ISBN 978-1-4028-9462-6