Name¶
lua-uri-urn-issn - ISSN URN support for Lua URI library
Description¶
The class "uri.urn.issn" is used for URNs with the NID 'issn', that
is, URIs which begin "urn:issn:". It inherits from the uri.urn
class.
The URI is considered invalid if it doesn't have 8 digits, if there is anything
extra in the NSS other than the digits and optional single hyphen, or if the
checksum digit is wrong.
As specified, the check digit is canonicalized to uppercase. The canonical form
has a single hyphen in the middle of the digits.
Methods¶
All the methods defined in
lua-uri(3) and
lua-uri-urn(3) as
supported, as well as the following:
- uri:issn_digits(...)
- Get or set the ISSN value as a string containing just the numbers. There
will be no hyphens in this value, and it should be exactly 8 characters
long.
If a new value is provided then it must not be nil, and will be validated in
the normal way, causing an exception if it is invalid.
References¶
This implements the 'issn' NID defined in "RFC 3044", and is
consistent with the same NID suggested in "RFC 2288".