IPP Mail Archive: IPP> RE: Revised ABNF per Monday's Phone C

IPP Mail Archive: IPP> RE: Revised ABNF per Monday's Phone C

IPP> RE: Revised ABNF per Monday's Phone Conference

From: Bergman, Ron (Ron.Bergman@Hitachi-hkis.com)
Date: Tue May 15 2001 - 18:53:48 EDT

  • Next message: Herriot, Robert: "RE: IPP> Revised ABNF per Monday's Phone Conference"

    Tom,

    I known we discussed both of your issues, but I do not recall such an
    agreement.

    It was my understanding that all class names need to be registered as either
    "inch class" or "mm class". This was the only way to guarantee their
    uniqueness.

    And to keep the class names simple, they were to be a single word.

    What is the advantage of not adding the class to the ABNF? We must always
    update the document to add any new names, and the ABNF can be updated at the
    same time.

            Ron

    -----Original Message-----
    From: Hastings, Tom N [mailto:hastings@cp10.es.xerox.com]
    Sent: Tuesday, May 15, 2001 11:01 AM
    To: Bergman, Ron; Ira McDonald (E-mail); Don Wright (E-mail)
    Cc: 'ipp@pwg.org'
    Subject: RE: Revised ABNF per Monday's Phone Conference

    I believe that we agreed that the mm class names wouldn't need to be
    explicitly listed in the ABNF, since most new class names that are
    registered will be using the "mm" units. Then we don't have to update the
    ABNF, except in the unlikely event that a class name that uses "in" units is
    registered.

    Also we agreed that the registered class names couldn't have "-" in them,
    but could have "." (as in registry path names).

    So here is my suggested ABNF instead (which just changes the class2 line):

    media-size-self-describing-name =
              ( class1 "_" size-name "_" short-dim "x" long-dim "in" ) |
              ( class2 "_" size-name "_" short-dim "x" long-dim "mm" )

       class1 = "na" | "asme" | "oe"

       class2 = lowalpha *( lowalpha | digit | "." )

       size-name = ( lowalpha | digit ) *( lowalpha | digit | "-" )

       short-dim = dim

       long-dim = dim

       dim = integer-part [fraction-part] | "0" fraction-part

       integer-part = non-zero-digit *digit

       fraction-part = "." *digit non-zero-digit

       lowalpha = "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" |
                  "j" | "k" | "l" | "m" | "n" | "o" | "p" | "q" | "r" |
                  "s" | "t" | "u" | "v" | "w" | "x" | "y" | "z"

       non-zero-digit = "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"

       digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"

    -----Original Message-----
    From: Bergman, Ron [mailto:Ron.Bergman@Hitachi-hkis.com]
    Sent: Tuesday, May 15, 2001 09:18
    To: Tom Hastings (E-mail); Ira McDonald (E-mail); Don Wright (E-mail)
    Cc: 'ipp@pwg.org'
    Subject: Revised ABNF per Monday's Phone Conference

    Here is my proposed ABNF to document the agreed restrictions in yesterday's
    phone call. I may be missing some of the class names but this should
    correctly linl\k each class to only one set of units.

    media-size-self-describing-name =
              ( class1 "_" size-name "_" short-dim "-" long-dim "in" ) |
              ( class2 "_" size-name "_" short-dim "-" long-dim "mm" )

       class1 = "na" | "asme" | "oe"

       class2 = "iso" | "jis" | "jpn" | "prc" | "roc" | "om"

       size-name = ( lowalpha | digit ) *( lowalpha | digit | "-" )

       short-dim = dim

       long-dim = dim

       dim = integer-part [fraction-part] | "0" fraction-part

       integer-part = non-zero-digit *digit

       fraction-part = "." *digit non-zero-digit

       lowalpha = "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" |
                  "j" | "k" | "l" | "m" | "n" | "o" | "p" | "q" | "r" |
                  "s" | "t" | "u" | "v" | "w" | "x" | "y" | "z"

       non-zero-digit = "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"

       digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"

    Any comments?

            Ron



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