[REBOL] Re: [port/skip]
From Tracker#295
SNIP
[skip does not work with open/binary/direct]
file: open/binary/direct/skip does not work.
at file n does not work
skip file n causes REBOL to hang.
These operations should either work or not be allowed on files opened with
/direct.
/SNIP
Regards,
Ashley
Ah - good they know about it.
In the meantime, this is my work-around: First, what happens if you use append...
write %test.txt 12345
x: open/binary/direct %test.txt
append x to-binary abc
close x
read %test.txt
== abc45
And my solution using loop and copy...
write %test.txt 12345
x: open/binary/direct %test.txt
loop size? %test.txt [copy/part x 1]
== #{35}
append x to-binary abc
close x
read %test.txt
== 12345abc
And given this behaviour, you may as well use insert instead of append.
Also, would copying larger blocks of bytes instead of just one at a time be faster or
better?
Thanks for all the responses,
-- Carl Read
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[REBOL] Re: [port/skip]
Hmm - I was badly wrong about skipping files after an open working okay - REBOL
totally locks up when I attempt this kind of thing... (Taken from the Users' Guide:
http://www.rebol.com/docs/core23/rebolcore-14.html#section-8.4)...
fp: open/direct/binary %file.dat
fp: skip fp 10
My example...
write %test.txt abcdefghijkl
fp: open/direct/binary %test.txt
fp: skip fp 4
At that point it totally locks up. Esc's no use - have to use Ctrl/Alt/Delete to shut
REBOL down. Using Win98SE. Is it the same for other Windows users?
-- Carl Read
Are there any known problems with the use of skip with ports? As on files it
doesn't seem to work for me...
write %test.txt abcdefghijkl
port: open/direct/binary %test.txt
copy/part port 4
== #{61626364}
close port
port: open/direct/binary/skip %test.txt 4
copy/part port 4
== #{61626364}
close port
but does with URLs...
port: open/direct/binary http://www.rebol.com/
connecting to: www.rebol.com
copy/part port 4
== #{3C48544D}
close port
port: open/direct/binary/skip http://www.rebol.com/ 4
connecting to: www.rebol.com
copy/part port 4
== #{4C3E0A3C}
close port
And if I use skip on an already opened port, ie...
port: skip port 4
it'll work if it's a file, but if an URL it'll just hang with nothing
returned.
Easy enough to work around this behaviour with files, but does skip with URLs
only work when opening the port? Or am I doing something wrong?
-- Carl Read
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[REBOL] Re: [port/skip]
Hi Carl,
indeed I experience exactly the same phenomenon! CPU goes to 100% and I have
to kill REBOL because it's stuck somewhere.
I'm running Win2k with all service packs / updates applied and REBOL/View
1.2.46.3.1.
Met vriendelijke groet / with kind regards,
Arie van Wingerden
http://home.zonnet.nl/rebolution/
- Original Message -
From: Carl Read [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, May 29, 2004 1:13 PM
Subject: [REBOL] Re: [port/skip]
Hmm - I was badly wrong about skipping files after an open working okay -
REBOL totally locks up when I attempt this kind of thing... (Taken from the
Users' Guide:
http://www.rebol.com/docs/core23/rebolcore-14.html#section-8.4)...
fp: open/direct/binary %file.dat
fp: skip fp 10
My example...
write %test.txt abcdefghijkl
fp: open/direct/binary %test.txt
fp: skip fp 4
At that point it totally locks up. Esc's no use - have to use
Ctrl/Alt/Delete to shut REBOL down. Using Win98SE. Is it the same for
other Windows users?
-- Carl Read
Are there any known problems with the use of skip with ports? As on
files it
doesn't seem to work for me...
write %test.txt abcdefghijkl
port: open/direct/binary %test.txt
copy/part port 4
== #{61626364}
close port
port: open/direct/binary/skip %test.txt 4
copy/part port 4
== #{61626364}
close port
but does with URLs...
port: open/direct/binary http://www.rebol.com/
connecting to: www.rebol.com
copy/part port 4
== #{3C48544D}
close port
port: open/direct/binary/skip http://www.rebol.com/ 4
connecting to: www.rebol.com
copy/part port 4
== #{4C3E0A3C}
close port
And if I use skip on an already opened port, ie...
port: skip port 4
it'll work if it's a file, but if an URL it'll just hang with nothing
returned.
Easy enough to work around this behaviour with files, but does skip with
URLs
only work when opening the port? Or am I doing something wrong?
-- Carl Read
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[EMAIL PROTECTED] with unsubscribe as the subject.
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