[LSC] File Format Restrictions for Official Parts

[William Howard]

Mike,

The whole point of removing these items from the File Format spec in the first place is that they are actually nothing to do with the general LDraw file format but are specific extra requirements for library parts, and as such, do not live in the File Format spec but need their own document.  For the same reason that the parts header spec is not an appendix to the file format spec, these are neither.

William
  ----- Original Message ----- 
  From: Michael Heidemann 
  To: LDraw Standards Committee 
  Sent: Tuesday, November 06, 2007 8:25 PM
  Subject: Re: [LSC] File Format Restrictions for Official Parts


  I just have had time for this job.

  I think we should handle this as an appendix to the existing LDraw.org File Format Version 1.0.0

  Appendix I (xx-Dec-07)

  Restrictions of the File Format for Official Parts (or on the Parts Tracker)

    a.. All files have to carry the DAT extension. 
    a.. The only Meta-commands that are allowed are BFC and that in the Header. 
    a.. The length of the filename is limited to 25 characters (including the extension) and may only contain the following characters: a-z, A-Z, 0-9, _, -, and . (to avoid confusion with English grammar, comma is not permitted while period (full-stop) is permitted). 
  I think this is clear and understandable, also for not native english people.

  cu
  mikeheide

  William Howard schrieb: 
    Just to be clear, all that is on the scratch pad are the sentences that were removed from the LDraw file spec and so need a new home finding for them and/or notes about what should also be mentioned in a library restrictions document.

    I have no idea why the 0.27 file spec only excluded the Write/Print meta command and not also step, clear, pause, etc, but I agree with Mike that we would be better to say what is permitted rather than what is not.

    Hopefully I'll have some time at the weekend to start making a proper spec document

    W
      ----- Original Message ----- 
      From: Michael Heidemann 
      To: LDraw Standards Committee 
      Sent: Monday, November 05, 2007 10:27 PM
      Subject: Re: [LSC] File Format Restrictions for Official Parts


      I agree so far, but I think the only meta command allowed should be comments like "0 // text" and "0 BFC [options]". This would be much easier to understand an no question will arise.

      cu
      mikeheide

      William Howard schrieb: 
        One of the most pressing things we need to do is to write the File Format Restrictions for Official Parts spec.

        These were items removed from the LDraw File Format 1.0.0 Spec that relate to library parts and not to the general file format.

        Items that were removed can be found on the LSC Scratch Pad - http://www.ldraw.org/Article408.html

        No doubt there are others.

        William
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