On Tue, Jan 31, 2012 at 8:35 PM, S Krish krishnamachari.sudhakar@gmail.comwrote:
I cant get the stdin on FileStream to work. Just blocks irrespective of what I do in sending characters with enter.. or any other trials .. will check a little more
I assure you it does work with the right image-level code. Here's an interaction with a 3.8/Qwaq derived image on Mac OS:
McStalker.macbuild$ uname -a Darwin McStalker 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:32:41 PDT 2011; root:xnu-1504.15.3~1/RELEASE_X86_64 x86_64 i386 McStalker.macbuild$ oscfvm ~/Cog/startreader.image squeak> DateAndTime now! 2012-02-03T13:04:24-08:00 squeak> Smalltalk quit! McStalker.macbuild$
On linux: [eliot@mcqfes ~]$ oscogvm/coglinux/squeak Cog/startreader.image squeak> Smalltalk quit! [eliot@mcqfes ~]$ uname -a Linux mcqfes 2.6.18-128.el5 #1 SMP Wed Jan 21 10:44:23 EST 2009 i686 i686 i386 GNU/Linux [eliot@mcqfes ~]$ oscogvm/coglinux/squeak Cog/startreader.image squeak> DateAndTime now! 2012-02-03T13:05:58-08:00 squeak> Smalltalk quit! [eliot@mcqfes ~]$
And windows: U:\Cog>ver
Microsoft Windows XP [Version 5.1.2600]
U:\Cog>oscogvm\cygwinbuild\build\vm\CroquetConsole.exe startreader.image squeak> DateAndTime now! 2012-02-03T13:07:39-08:00 squeak> Smalltalk quit!
U:\Cog>
It's crude, using chunk format, but demonstrates the functionality and is very simple. To get this to work requires the attached nextChunkNoTag hack since restoreState:with: seems unreliable (it implements skip: -1, which is used in peek). For Windows you need the 2519 or newer Cog VM.
On Wed, Feb 1, 2012 at 5:06 AM, Eliot Miranda eliot.miranda@gmail.comwrote:
On Tue, Jan 31, 2012 at 4:10 AM, Damien Pollet damien.pollet@gmail.comwrote:
On 29 January 2012 21:11, Guillermo Polito guillermopolito@gmail.com wrote:
I've spent a few hours playing with Alien+FFI and I did want to have a Command line interface to play and use as a quick browser.
This is something I'd like to have as a part of Coral.
What's your opinion on the FFI-libc approach compared to OSProcess? I was actually thinking of doing something like that using NativeBoost :)
There is a third option which just uses the stdio streams in StandardFileStream. this has been working in the Cog VMs for some time now.
Gofer it squeaksource: 'CLInterface'; package: 'ConfigurationOfCLInterface'; load.
ConfigurationOfCLInterface load.
To play with it write a script, for example startCLI.st, with the
following:
CLInterface start
And then, from the command line
CogVM -vm-display-null <image> startCLI.st
What it does support?
- executes smalltalk expressions
- handles the errors and shows them into the stdout (so it does not
explode
:P)
- stores variables as a workspace
Since I used standard C functions (fgets and printf only) this should
work
on every platform from scratch (having a VM with FFI working, of
course)...
The problems I've ran so far:
- blocking FFI blocks the vm. I've not tried yet to use threads
through FFI
(and I don't know if it works. Does it?). But It should be great to
start
a headless seaside server with a command line :/.
Ok, it's a very simple thing, but it allows to execute a expression
from a
remote server via ssh without doing much :).
Guille
-- Damien Pollet type less, do more [ | ] http://people.untyped.org/damien.pollet
-- best, Eliot