[Mirrored from: http://www.entmp.org/fpi-urn/fpi.html]

FPI-URN Resolution on the Internet: Notes

Formal Public Identifiers (FPIs)

ISO/IEC 9070:1991

Thanks to Martin Bryan for this.

public identifier =

owner name, "//", object name

owner name =

registered owner name | unregistered owner name

registered owner name =

registered owner prefix, ( "::", owner-name component)*

owner name component =

owner-name character, (SPACE?, owner-name character)*

owner-name character =

UC Letter | LC Letter | Digit | "'" | "(" | ")" | "+" | "," | "-" | "." | ":" | "=" | "?" | "/"

registered owner prefix =

ISO standard authority prefix | ISO registration authority prefix | ISO member body prefix | ISO identified organization authority prefix

ISO standard authority prefix =

"ISO", ("/", "aaa")?, SPACE, "nnnnn", ("-", "pp")?, ":", yyyy"?

ISO registration authority prefix =

full registration authority prefix | ISBN prefix | ISO 2375 prefix

full registration authority prefix =

"ISO", ("/", "aaa")?, SPACE, "nnnn", ("-", "pp")?, "/", ("R" | "r"), ("A" | "a")

ISBN prefix =

"ISBN", SPACE, "gggg", "-" "pppp" ("-", "tttt")?

ISO 2375 prefix =

"ISO Registration Number", SPACE, "ccc"+

ISO member body authority prefix =

"aa"

ISO identified organization authority prefix =

"ICD", "iiii", "/", "oooo"

object name =

object-name component, ("::", object-name component)*

object-name component =

(object-name character, (SPACE?, object-name character)*

object-name character =

UC Letter | LC Letter | Digit | "'" | "(" | ")" | "+" | "," | "-" | "." | ":" | "=" | "?" | "/"

ISO 8879:1986

fpi =

owner_identifier // text_identifier

owner_identifier =

ISO_owner_identifier | registered_owner_identifier | unregistered_owner_id

text_identifier =

public_text_class SPACE unavailable_text_indicator? public_text_description // (public_text_language | public_text_designating_sequence) (// public_text_display_version)?

ISO_owner_identifier =

minimum_data

registered_owner_identifier =

+// minimum_data

unregistered_owner_identifier =

-// minimum_data

public_text_class =

CAPACITY | CHARSET | DOCUMENT | DTD | ELEMENTS | ENTITIES | LPD | NONSGML | NOTATION | SHORTREF | SUBDOC | SYNTAX | TEXT

unavailable_text_indicator =

-//

public_text_description =

minimum_data

public_text_language =

code from ISO 639 (only if class is not CHARSET)

public_text_designating_sequence =

external form of ISO 2022 escape sequence for character set (only if class is CHARSET)

public_text_display_version =

description of devices supported or encoding scheme used (not if class is CAPACITY, CHARSET, NOTATION or SYNTAX)

minimum data =

(RS | RE | SPACE | LETTER | DIGIT | SPECIAL)*