[squeak-dev] how to write to stdOut and stdErr under Cog

Levente Uzonyi leves at elte.hu
Mon Sep 27 02:13:28 UTC 2010


On Sun, 26 Sep 2010, Eliot Miranda wrote:

> Hi Chris,
>
>    I have code for this, but right now I need to crack some crabs, so I
> don't have time to verify this code in 4.1 :)  Use at your own risk ;)  The
> most important thing is the StandardFileStream>>stdioHandles primitive for
> accessing the streams.  N.B. some work needs to be done on the win32
> FilePlugin support code before this will work on Windows.

All three streams seem to be working on Windows Vista with the latest 
CogVM.
This seems to be a really cool feature, though I think CrLfFileStream 
should be deprecated, so MultiByteFileStream support would be better IMO.


Levente

>
>
> On Sun, Sep 26, 2010 at 2:46 PM, Chris Muller <asqueaker at gmail.com> wrote:
>
>> I am developing a simple "CommandLineProcessor" facade for easily
>> transferring command-line arguments simply as block-arguments, so you
>> can write smalltalk scripts in vi:
>>
>>  CommandLineProcessor do: [ : arg1 : arg2 : arg3 | "args come in as
>> Strings" ... ]
>>
>> and also for directing Notifications and Warnings messages to stdOut,
>> and Errors to stdErr.  It relies on OSProcess to write to stdOut and
>> stdErr for this.  However, ever since switching to Cog, writing to
>> these streams does not seem to redirect out to Linux..
>>
>> I don't know whether writing to these streams makes me
>> Linux-dependent, but it really is nice to be able to write Linux
>> scripts that employ Squeak in the back-end, but operate normally like
>> other shell programs in the terminal window and with redirecting
>> output, etc.
>>
>>  - Chris
>>
>>
>



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