f-script-talk

[F-Script-talk] Dictionary and a shell command wanted :)

[Giovanni G. <jj...@ob...>]

Hi all,
  I am a very strong Squeak fan and I liked a lot FScript.
I decided to use Fscript to write some small front-end script.
I have two question.
There is a simple way of creating an associative array?
Something which will be able to do:
	dic at:'a' put:'aValue'
?
And how is  possible to execute arbitrary shell commands (something  
like the exec() or system() C function)?
Thank you very much!
-- 
    [   [  [ JJ ]  ]   ]  | Temi cio' che conosci, non
                          | cio' che non conosci
http://www.siforge.org   |

Re: [F-Script-talk] Dictionary and a shell command wanted :)

[Felix F. <fe...@gm...>]

> Hi all,
>   I am a very strong Squeak fan and I liked a lot FScript.

me too :) 

> I decided to use Fscript to write some small front-end script.
> I have two question.
> There is a simple way of creating an associative array?
> Something which will be able to do:
> 	dic at:'a' put:'aValue'
> ?

you can use a NSMutableDictionary:

> dict := NSMutableDictionary new

> dict setObject: 'foo' forKey: 'bar'

> dict objectForKey: 'bar'
'foo'


> And how is  possible to execute arbitrary shell commands (something  
> like the exec() or system() C function)?

The cocoa-way would be to use NSTask: 

> task := NSTask launchedTaskWithLaunchPath:'/bin/ls' arguments: NSArray array

launches /bin/ls . 

See http://developer.apple.com/documentation/Cocoa/Reference/Foundation/ObjC_classic/index.html
for the glory details. 


Hope this helps, 


felix


> Thank you very much!
> -- 
>     [   [  [ JJ ]  ]   ]  | Temi cio' che conosci, non
>                           | cio' che non conosci
> http://www.siforge.org   |
> 
> 
> -------------------------------------------------------------------------
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Re: [F-Script-talk] Dictionary and a shell command wanted :)

[Philippe M. <pm...@ac...>]

Le 24 ao=FBt 06 =E0 10:44, Felix Franz a =E9crit :

[...]

>
>> And how is  possible to execute arbitrary shell commands (something
>> like the exec() or system() C function)?
>
> The cocoa-way would be to use NSTask:
>
>> task :=3D NSTask launchedTaskWithLaunchPath:'/bin/ls' arguments: =20
>> NSArray array
>
> launches /bin/ls .
>
> See http://developer.apple.com/documentation/Cocoa/Reference/=20
> Foundation/ObjC_classic/index.html
> for the glory details.
>

In addition, creating an Objective-C wrapper for a function like =20
system() and loading it in F-Script (see section 11 in the F-Script =20
guide) would be trivial (if you can program in Objective-C). =20
Something like this in Objective-C:

-(int)executeInShell:(NSString *)str
{
   return system([str UTF8String]);
}

Best,

Philippe

Re: [F-Script-talk] Dictionary and a shell command wanted :)

[Giovanni G. <dai...@gm...>]

Thank you very much!

I have poked around the Cocoa library and seems very simple to use
with FScript :)

Is planned some new extension to the language for  creating small
classes in Fscript language itself?

There are FScript porting to other O.S. for instance Linux and Windows?




On 8/24/06, Philippe Mougin <pm...@ac...> wrote:
>
> Le 24 ao=FBt 06 =E0 10:44, Felix Franz a =E9crit :
>
> [...]
>
> >
> >> And how is  possible to execute arbitrary shell commands (something
> >> like the exec() or system() C function)?
> >
> > The cocoa-way would be to use NSTask:
> >
> >> task :=3D NSTask launchedTaskWithLaunchPath:'/bin/ls' arguments:
> >> NSArray array
> >
> > launches /bin/ls .
> >
> > See http://developer.apple.com/documentation/Cocoa/Reference/
> > Foundation/ObjC_classic/index.html
> > for the glory details.
> >
>
> In addition, creating an Objective-C wrapper for a function like
> system() and loading it in F-Script (see section 11 in the F-Script
> guide) would be trivial (if you can program in Objective-C).
> Something like this in Objective-C:
>
> -(int)executeInShell:(NSString *)str
> {
>    return system([str UTF8String]);
> }
>
> Best,
>
> Philippe
>
>
>
>
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job ea=
sier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronim=
o
> http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&dat=
=3D121642
> _______________________________________________
> F-Script-talk mailing list
> F-S...@li...
> https://lists.sourceforge.net/lists/listinfo/f-script-talk
>


--=20
Software Architect
http://www.objectsroot.com/
Software is nothing

Re: [F-Script-talk] Dictionary and a shell command wanted :)

[Philippe M. <pm...@ac...>]

Le 24 ao=FBt 06 =E0 11:48, Giovanni Giorgi a =E9crit :

> Thank you very much!
>
> I have poked around the Cocoa library and seems very simple to use
> with FScript :)
>
> Is planned some new extension to the language for  creating small
> classes in Fscript language itself?

There is preliminary support for this, with a few limitations (no =20
call to super, access to instances variable through KVC...). A more =20
complete solution will eventually be provided.

Here is a basic example where we create a new subclass of NSObject, =20
named MyClass, with three instance variables named a, b and c, and =20
define a simple method named method1:

   > NSObject subclass:'MyClass' instanceVariableNames:'a b c'
  MyClass

   > MyClass
  MyClass

   > MyClass setFSBlock:[:self :_cmd| 'Method ' ++ _cmd ++ ' called on '
  ++ self printString] asInstanceMethod:#method1

   > myInstance :=3D MyClass alloc init

   > myInstance method1
  'Method method1 called on <MyClass: 0x4bb69c0>'

Using the setFSBlock... methods you can also add methods to existing =20
Cocoa classes.

For another approach, look at KFDecorator, from Ken Ferry at:
http://homepage.mac.com/kenferry/software.html#KFDecorator

> There are FScript porting to other O.S. for instance Linux and =20
> Windows?

None that I'm aware of.

Best,

Philippe

Re: [F-Script-talk] Dictionary and a shell command wanted :)

[Giovanni G. <jj...@ob...>]

On 24/ago/06, at 12:07, Philippe Mougin wrote:

>
>> NSObject subclass:'MyClass' instanceVariableNames:'a b c'
>   MyClass
>
>> MyClass setFSBlock:[:self :_cmd| 'Method ' ++ _cmd ++ ' called on '
>   ++ self printString] asInstanceMethod:#method1
>
>> myInstance := MyClass alloc init
>
>> myInstance method1
>   'Method method1 called on <MyClass: 0x4bb69c0>'
>
> Using the setFSBlock... methods you can also add methods to existing
> Cocoa classes.
Nice!
How can  access to instance variable inside methods block?
I tried with (self a)
without so much success.
Even valueForKey: didn't work :|

--  
    [   [  [ JJ ]  ]   ]  | When you encounter seemingly good advice
                          | that contradicts other seemingly good  
advice,
http://www.siforge.org   | ignore them both.  Al Franken

Re: [F-Script-talk] Dictionary and a shell command wanted :)

[Philippe M. <pm...@ac...>]

Le 25 ao=FBt 06 =E0 21:00, Giovanni Giorgi a =E9crit :

>
> On 24/ago/06, at 12:07, Philippe Mougin wrote:
>
>>
>>> NSObject subclass:'MyClass' instanceVariableNames:'a b c'
>>   MyClass
>>
>>> MyClass setFSBlock:[:self :_cmd| 'Method ' ++ _cmd ++ ' called on '
>>   ++ self printString] asInstanceMethod:#method1
>>
>>> myInstance :=3D MyClass alloc init
>>
>>> myInstance method1
>>   'Method method1 called on <MyClass: 0x4bb69c0>'
>>
>> Using the setFSBlock... methods you can also add methods to existing
>> Cocoa classes.
> Nice!
> How can  access to instance variable inside methods block?
> I tried with (self a)
> without so much success.
> Even valueForKey: didn't work :|

Here is an example using KVC to access instance variables:

  > MyClass setFSBlock:[:self| self setValue:33 forKey:'a'. self =20
valueForKey:'a'] asInstanceMethod:#method1

  > myInstance method1
  33

--Philippe