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OGF DFDL Working Group Call
by Steve Hanson 15 Apr '20

15 Apr '20

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Behavior of nilKind literalValue with respect to binaryNumberRep of packed
by Bradd Kadlecik 15 Apr '20

15 Apr '20

I think there is a problem when the literalValue is left-justified for binary data such as packed decimals. This seems problematic because a "0" value might be indicated by having the last byte be 0x0C for a signed numeric while a nil value might be desired to be understood by having the last byte be a 0x0F. In both cases, all preceding bytes are 0x00. In the case that the packed decimal is of variable length, there seems no way to represent this nil value unless it is understood that the fillByte is used for the area preceding the NilElementLiteralContent. Apologies if I might of missed some clarification made regarding this. Regards, Bradd Kadlecik z/TPF Development Phone: 1-845-433-1573 2455 South Rd E-mail: braddk(a)us.ibm.com Poughkeepsie, NY 12601-5400 United States

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what data format was dfdl:floating intended to support?
by Mike Beckerle 14 Apr '20

14 Apr '20

I got asked this recently, and I know this property got added to DFDL for some particular cases, but I don't recall what format(s) they are, and if they are well-known, or something that was just encountered in some users' ad-hoc formats. ...mikeb Mike Beckerle | OGF DFDL Workgroup Co-Chair | Owl Cyber Defense | www.owlcyberdefense.com Please note: Contributions to the DFDL Workgroup's email discussions are subject to the OGF Intellectual Property Policy <http://www.ogf.org/About/abt_policies.php>

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OGF DFDL WG Call 2020-04-02 cancelled
by Steve Hanson 02 Apr '20

02 Apr '20

Still busy from March. Regards Steve Hanson Architect, IBM DFDL Co-Chair, OGF DFDL Working Group Hursley, UK smh(a)uk.ibm.com tel:+44-1962-815848

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Cancelled: OGF DFDL Working Group Call
by Steve Hanson 02 Apr '20

02 Apr '20

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Clarification: zero-bit-long integer parses to value 0, or parse-error or?
by Mike Beckerle 21 Mar '20

21 Mar '20

Consider: <xs:element name="spare" dfdl:length="{ $tns:WordPaddingBits }"> <xs:simpleType dfdl:lengthKind="explicit"> <xs:annotation> <xs:appinfo source="http://www.ogf.org/dfdl/"> <dfdl:assert test="{ . eq 0 }" /> </xs:appinfo> </xs:annotation> <xs:restriction base="xs:unsignedInt"> <xs:enumeration value="0" /> </xs:restriction> </xs:simpleType> </xs:element> Now, suppose the variable tns:WordPaddingBits has value 0. So this padding integer will be length 0 (this binary data with lengthUnits bits). Currently, Daffodil gives a runtime SDE on this. The assert test expression complains that "." has no value. I would claim this should either provide a value of 0 for this integer, or it should be a parse error because you must have at least 1 bit. Thoughts? Mike Beckerle | OGF DFDL Workgroup Co-Chair | Owl Cyber Defense | www.owlcyberdefense.com (Tresys is now part of Owl) Please note: Contributions to the DFDL Workgroup's email discussions are subject to the OGF Intellectual Property Policy <http://www.ogf.org/About/abt_policies.php>

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OGF DFDL WG Calls in March 2020 - all cancelled
by Steve Hanson 03 Mar '20

03 Mar '20

Canceling all calls in March as both Steve & Mike are busy. Regards Steve Hanson Architect, IBM DFDL Co-Chair, OGF DFDL Working Group Hursley, UK smh(a)uk.ibm.com tel:+44-1962-815848

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Cancelled: OGF DFDL Working Group Call
by Steve Hanson 03 Mar '20

03 Mar '20

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Cancelled: OGF DFDL Working Group Call
by Steve Hanson 03 Mar '20

03 Mar '20

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Cancelled: OGF DFDL Working Group Call
by Steve Hanson 19 Feb '20

19 Feb '20

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