stream('file','c','seek ='x) problem
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William H. Geiger II
#1 / 5
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 stream('file','c','seek ='x) problem Hi,
I seem to be having a problem with the stream('file','c','seek ='x)
function in Classic Rexx, OS/2 Warp 4, FP1.
If I do:
stream('file','c','open read')
stream('file','c','seek ='x)
the read pointer does not move to x but says at 0 (the stream function
returns NULL).
If I do:
stream('file','c','open read')
linein('file')
stream('file','c','seek ='x)
Then the read pointer moves to the correct position in the file (stream
funtion returns x).
Has anyone else notice this problem?
--
-----------------------------------------------------------
William H. Geiger III http://www.*-*-*.com/ ~whgiii
Geiger Consulting Cooking With Warp 4.0
Author of E-Secure - PGP Front End for MR/2 Ice
PGP & MR/2 the only way for secure e-mail.
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| Fri, 08 Oct 1999 03:00:00 GMT |
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J. Turinc
#2 / 5
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stream('file','c','seek ='x) problem
Quote: > Hi,
> I seem to be having a problem with the stream('file','c','seek ='x)
> function in Classic Rexx, OS/2 Warp 4, FP1.
> If I do:
> stream('file','c','open read')
> stream('file','c','seek ='x)
> the read pointer does not move to x but says at 0 (the stream function
> returns NULL).
I think you actually want: stream(file,'c','open read')
linein(file)
stream(file,'c','seek ='x)
(unless the literal "file" is the actual name of your input file) -
otherwise,
it would make sense a file name "file" doesn't exist and you would
receive
the NULL. The modified statements reference a file name contained in
the
variable file...
Quote: > stream('file','c','open read') > linein('file') > stream('file','c','seek ='x) > Then the read pointer moves to the correct position in the file (stream
> funtion returns x).
+----------------------------------------------------------- | J. Turincs - Database and Operating systems | Mainframes and PCs +-----------------------------------------------------------
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| Sat, 09 Oct 1999 03:00:00 GMT |
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Jerry Le
#3 / 5
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stream('file','c','seek ='x) problem
Quote: >Hi, >I seem to be having a problem with the stream('file','c','seek ='x)
>function in Classic Rexx, OS/2 Warp 4, FP1.
>If I do:
> stream('file','c','open read')
> stream('file','c','seek ='x)
>the read pointer does not move to x but says at 0 (the stream function
>returns NULL).
>If I do:
> stream('file','c','open read')
> linein('file')
> stream('file','c','seek ='x)
>Then the read pointer moves to the correct position in the file (stream
>funtion returns x).
>Has anyone else notice this problem?
Not exactly that problem, but another where Classic ReXX's syntax for the stream seek command will create a syntax error under Object ReXX, and Object ReXX's syntax for it will create a syntax error under Classic ReXX. The difference in the 'seek' stream command Classic ReXX vs. Object ReXX is:
Object ReXX requires the use of the word read or write, whereas Classic Rexx does not
call stream hosts_dat, 'c', 'seek ='5
works under Classic ReXX but not Object ReXX
whereas
call stream hosts_dat, 'c', 'seek ='5 'read'
works under Object but not Classic
--
Jerry Levy Marblehead, MA (USA)
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| Wed, 13 Oct 1999 03:00:00 GMT |
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Ian Colli
#4 / 5
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stream('file','c','seek ='x) problem
Quote: >I seem to be having a problem with the stream('file','c','seek ='x)
I might add (though it's probably too late) that what you've got there is a syntax error because it looks like a literal hex string ('seek ='x) but doesn't contain valid hex characters. --
------ http://www.comlab.ox.ac.uk/oucl/users/ian.collier/imc.html New to this group? Answers to frequently-asked questions can be had from
http://rexx.hursley.ibm.com/rexx/ .
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| Sun, 17 Oct 1999 03:00:00 GMT |
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