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comp.lang.ruby

redirect STDOUT

Luo Yong

10/14/2006 9:33:00 AM


Hi all

I'm writting a program to detect the cursor position with the vt100 command "\x1b[6n".

So I need to redirect STDOUT to a string.

How can I do this?

Thanks
9 Answers

David Roberts

10/14/2006 9:11:00 PM

0

yong wrote:
> Hi all
>
> I'm writting a program to detect the cursor position with the vt100
> command "\x1b[6n".
>
> So I need to redirect STDOUT to a string.
>
> How can I do this?
>
> Thanks

I suggest looking at the code for the win2console library, which gives
an example of something similar.


--
Posted via http://www.ruby-....

David Roberts

10/14/2006 9:13:00 PM

0

David Roberts wrote:
> yong wrote:
>> Hi all
>>
>> I'm writting a program to detect the cursor position with the vt100
>> command "\x1b[6n".
>>
>> So I need to redirect STDOUT to a string.
>>
>> How can I do this?
>>
>> Thanks
>
> I suggest looking at the code for the win2console library, which gives
> an example of something similar.

Oh bother! That should be "win32console".

DJ

--
Posted via http://www.ruby-....

Luo Yong

10/15/2006 3:49:00 AM

0


Thank you very much.

Now I can use STDOUT.reopen to redirect STDOUT output to a file.But How can I redirect it to a string?

Thanks.



David Roberts <smartgpx@gmail.com> writes:

> yong wrote:
>> Hi all
>>
>> I'm writting a program to detect the cursor position with the vt100
>> command "\x1b[6n".
>>
>> So I need to redirect STDOUT to a string.
>>
>> How can I do this?
>>
>> Thanks
>
> I suggest looking at the code for the win2console library, which gives
> an example of something similar.
>
>
> --
> Posted via http://www.ruby-....
>

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Ara.T.Howard

10/15/2006 4:24:00 AM

0

David Roberts

10/15/2006 8:57:00 AM

0

yong wrote:

> Now I can use STDOUT.reopen to redirect STDOUT output to a file.But How
> can I redirect it to a string?
>

see "ri StringIO"

DJ

--
Posted via http://www.ruby-....

Eric Hodel

10/15/2006 9:06:00 AM

0

On Oct 14, 2006, at 8:50 PM, yong wrote:
> David Roberts <smartgpx@gmail.com> writes:
>> yong wrote:
>>> I'm writting a program to detect the cursor position with the vt100
>>> command "\x1b[6n".
>>>
>>> So I need to redirect STDOUT to a string.
>>>
>>> How can I do this?
>>
>> I suggest looking at the code for the win2console library, which
>> gives
>> an example of something similar.
>
> Now I can use STDOUT.reopen to redirect STDOUT output to a file.But
> How can I redirect it to a string?

You don't.

You should avoid touching STDOUT and STDERR as much as possible.

Instead assign a StringIO to $stdout.

http://blog.se.../articles/2006/08/17/stdout...

--
Eric Hodel - drbrain@segment7.net - http://blog.se...
This implementation is HODEL-HASH-9600 compliant

http://trackmap.rob...

Luo Yong

10/15/2006 10:30:00 AM

0



>>>
#!/usr/bin/ruby

require 'stringio'

mystring=""
sstring=StringIO.open(mystring,"w+")

#STDOUT.reopen(sstring) #can't work
stdoutbackup=$stdout
$stdout=sstring

print "BUFFERED TEXT\r\n"

$stdout=stdoutbackup
print mystring
<<<

It works.

Thank you very much. :)


Eric Hodel <drbrain@segment7.net> writes:

> On Oct 14, 2006, at 8:50 PM, yong wrote:
>> David Roberts <smartgpx@gmail.com> writes:
>>> yong wrote:
>>>> I'm writting a program to detect the cursor position with the vt100
>>>> command "\x1b[6n".
>>>>
>>>> So I need to redirect STDOUT to a string.
>>>>
>>>> How can I do this?
>>>
>>> I suggest looking at the code for the win2console library, which
>>> gives
>>> an example of something similar.
>>
>> Now I can use STDOUT.reopen to redirect STDOUT output to a file.But
>> How can I redirect it to a string?
>
> You don't.
>
> You should avoid touching STDOUT and STDERR as much as possible.
>
> Instead assign a StringIO to $stdout.
>
> http://blog.se.../articles/2006/08/17/stdout...
>
> --
> Eric Hodel - drbrain@segment7.net - http://blog.se...
> This implementation is HODEL-HASH-9600 compliant
>
> http://trackmap.rob...
>
>
>

--
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http://www.tw...

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cn.comp.lang.perl
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Eric Hodel

10/15/2006 9:13:00 PM

0

On Oct 15, 2006, at 3:30 AM, yong wrote:
> Eric Hodel <drbrain@segment7.net> writes:
>> On Oct 14, 2006, at 8:50 PM, yong wrote:
>>> Now I can use STDOUT.reopen to redirect STDOUT output to a file.But
>>> How can I redirect it to a string?
>>
>> You don't.
>>
>> You should avoid touching STDOUT and STDERR as much as possible.
>>
>> Instead assign a StringIO to $stdout.
>>
>> http://blog.se.../articles/2006/08/17/stdout...
>
> require 'stringio'
>
> mystring=""
> sstring=StringIO.open(mystring,"w+")

sstring = StringIO.new will suffice.

> #STDOUT.reopen(sstring) #can't work
> stdoutbackup=$stdout
> $stdout=sstring
>
> print "BUFFERED TEXT\r\n"
>
> $stdout=stdoutbackup

I tend to wrap this up in a method that yields. See util_capture in
ZenTest's test/zentest_assertions.rb

--
Eric Hodel - drbrain@segment7.net - http://blog.se...
This implementation is HODEL-HASH-9600 compliant

http://trackmap.rob...

I L. Gregg

9/13/2013 2:54:00 AM

0

"Denny" is a Socialist-Communist Troll, a moderately retarded fool,
and a poor liar.

From: dzweibach@REMOVEyahoo.com (Denny)
X-No-Archive: yes

----------
Everything you need to know about 'Denny':
>Bret Cahill <BretCahill@peoplepc.com> wrote:
>> Holder needs to go after W. Bush & Cheney for using the IRS against
>> anti-quagmire activists and after they are safely behind bars then
>> we'll discuss Obama.
>...Those two have problems enough. We've all heard the rumors...Screaming
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>one of them see a Wounded Warrior ad on TV, their handlers have to hit them
>with the needle.
>MAY EVERY WAR-SUPPORTING RIGHT-WINGER SUFFER THE SAME.
[Emphasis mine - PG.]
----------

"Denny" posts a lot like a new version of that old brain-damaged idiot
"Ray Fischer."

Please note that when you reply to a Liar you encourage them to
continue lying.

[][][][][][]
The DemocRATs Hall Of Shame asks "Why do you always LIE?"

[Courtesy of Buster Norris]

On 03 Sep 2013 17:48:21 GMT, dzweibach@REMOVEyahoo.com (Denny) wrote:
>The president was smart to ask for a Congressional Resolution.
>If the House Republicans vote for an attack, their Tea Party constituents
>will barbecue them for agreeing with the President on anything. If they
>vote against, the President will just say "I tried but the cowardly GOP
>doesn't care about the suffering people of Syria.

LIAR!!!!!!!!!!!!!!!!!!!

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http://minnesota.publicradio.org/display/web/2013/09/03/daily-circuit-s...

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Posted on behalf of:
The DemocRATs Hall of Shame!