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From: TOM@PENNDRLS.BITNET ("Thomas D. Denier")
Newsgroups: comp.lang.asm370
Subject: Re: Coding Questions
Message-ID: <9011011914.AA18019@ucbvax.Berkeley.EDU>
Date: 1 Nov 90 19:11:17 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: IBM 370 Assembly Programming Discussion List
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I think the scheme Steve Greenfield describes for parsing 3270 input
is going to have problems with fields containing nulls. A keyboard
operator can fill all or part of a field with nulls using the Erase
EOF key or the Delete key. If I remember correctly, only the non-null
characters in a field are sent to the host in response to a Read
Buffer command. If a field contains nulls the string sent to the host
will have fewer characters than the field length. I think Steve
Greenfields algorithm will treat the next SBA character, its address,
and some of the data from the next field as part of the field in this
case.