Re: [MacRuby-devel] A MacRuby-users group?

2009-05-24 Thread Paul Howson

On 23/05/2009, at 3:35 AM, Laurent Sansonetti wrote:

Any though? If most people agree to create a -users group I can ask  
for an official (macosforge.org) one.


If another list is created, could you please consider something a  
little more flexible than this kind of (old fashioned) mailing list?  
Something with an RSS feed would make it easier to integrate with  
other feed subscriptions. And maybe something with a better designed/ 
more modern web interface?


Paul Howson

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[MacRuby-devel] MacRuby Document-based Application template in XCode?

2009-06-16 Thread Paul Howson

Hi,

When using Objective-C, XCode provides you with a template for a  
"Cocoa Document-based Application".


For MacRuby we so far have in XCode only "MacRuby Application" and  
"MacRuby Core Data Application".


Would it work to take a new MacRuby Application and copy across the  
relevant bits from a new Cocoa Document-based Application in order to  
make a MacRuby Document-based Application?


Is it that simple, or are there other gotchas I need to know about?

Paul Howson
Queensland Australia
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Re: [MacRuby-devel] MacRuby Document-based Application template in XCode?

2009-06-17 Thread Paul Howson

Thanks everyone for those tips.

Paul Howson
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Re: [MacRuby-devel] Setting Breakpoints/Debugger

2009-06-17 Thread Paul Howson

On 04/06/2009, at 6:57 AM, Laurent Sansonetti wrote:

I have an idea about adding facilities inside the new VM in order to  
attach a debugger to it (and we could even patch gdb to add Ruby  
support!) but I won't be able to start this any time soon, because  
there are too many higher priority things to implement first. But if  
one wants to help... patches are always welcome.


Laurent


Hmmm. Lack of debugger support is surely a serious limitation. A deal- 
stopper for any complex real-world app I would have thought.


I guess you're aware that this will eventually be needed.

Is anyone using MacRuby for a large project? How are they coping  
without a debugger? (I'd like to know since I'm planning to convert an  
old non-Objective-C app to MacRuby).


Paul Howson
Queensland Australia
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Re: [MacRuby-devel] Setting Breakpoints/Debugger

2009-06-18 Thread Paul Howson

On 18/06/2009, at 5:47 PM, Matt Aimonetti wrote:

Not being able to use ruby debug in MacRuby is something that used  
to really bother me at first. I'm thinking about maybe hacking  
hotconsole so you could run it in the context of your app. That  
would obviously not be as nice a real debugger but that might be cool.


I'm not familiar with hotconsole. Would that be something like script/ 
console in Rails? That would be useful.


Also, thanks Eloy for your response. Good points.

Paul
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Re: [MacRuby-devel] Setting Breakpoints/Debugger

2009-06-18 Thread Paul Howson

On 19/06/2009, at 6:26 AM, Laurent Sansonetti wrote:

I agree nevertheless that we need a debugger. Ideally we should  
modify the compiler to emit debugging traps that can be used by a  
regular debugger, then we can write an UI for it. But as I wrote  
earlier this isn't something very high on the roadmap for now,  
because there are more high priority things to do. If someone is  
willing to give this a try, he's very welcome, though.


Well, you can debug Objective-C inside xcode -- stepping through the  
source, etc. So doesn't xcode already provide a UI? Surely this would  
be the desirable route for a MacRuby debugging facility -- once that  
works inside xcode just like Objective-C?


Paul
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Re: [MacRuby-devel] not 32bit

2009-10-08 Thread Paul Howson

On 09/10/2009, at 4:56 AM, Laurent Sansonetti wrote:

Note that MacRuby is only known to work under a certain revision of  
LLVM trunk (which is documented in the README.rdoc file).


Does the MacRuby installer also install LLVM? If not, how is that kept  
up to date?


Paul Howson
Queensland, Australia.
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[MacRuby-devel] Do the nightly builds continue from the latest beta

2009-10-09 Thread Paul Howson
This might be an obvious question, but are the nightly builds (and the  
nightly build installers) an evolution from whatever is the latest  
beta? In other words, are the official betas just particular snapshots  
of the ongoing nightly build process?



Paul Howson
Warwick Qld Australia

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[MacRuby-devel] String#getbyte not working?

2009-11-23 Thread Paul Howson
It appears the new String method called getbyte for Ruby 1.9 is not  
working? Results in an "Abort trap" message.


~/Dev $ macruby --version
MacRuby version 0.5 (ruby 1.9.0) [universal-darwin10.0, x86_64]

~/Dev $ macruby -e ' "abc".getbyte(0);'
Abort trap

Paul Howson
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[MacRuby-devel] How to test if you're running MacRuby vs. Ruby?

2009-12-17 Thread Paul Howson
Is there a way to test if code is running in MacRuby rather than Ruby? I'm 
developing and testing some code using plain old Ruby 1.8.7 in TextMate, then 
integrating it into an Xcode project, so I need to be able to "comment out" 
some lines which are Cocoa-dependent when testing in plain Ruby.

Paul Howson
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Re: [MacRuby-devel] How to test if you're running MacRuby vs. Ruby?

2009-12-18 Thread Paul Howson
On 17/12/2009, at 6:21 PM, Josh Ballanco wrote:

> def is_macruby?
>  defined? RUBY_ENGINE && RUBY_ENGINE == 'macruby'
> end
> 
> Cheers,
> Josh

Thanks Josh. However I note this works only if you write:

defined?(RUBY_ENGINE) && RUBY_ENGINE == 'macruby'

i.e. the argument to defined? must be put in parentheses else MacRuby crashes.

Paul Howson

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Re: [MacRuby-devel] [MacRuby] #499: Order declaring class hierarchy gets MacRuby confused about instance variables

2010-01-31 Thread Paul Howson
On 11/12/2009, at 11:53 AM, MacRuby wrote:

> #499: Order declaring class hierarchy gets MacRuby confused about instance
> variables
> --+-
> Reporter:  p...@…|   Owner:  lsansone...@…
> Type:  defect|  Status:  new  
> Priority:  major |   Milestone:  MacRuby 0.5  
> Component:  MacRuby   |Keywords:   
> --+-
> 
> Comment(by lsansone...@…):
> 
> Definitely a bug... thanks for the report.

This bug has not been fixed in MacRuby 0.5. Will it automatically migrate to 
being a 0.6 milestone?

Paul Howson

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[MacRuby-devel] Requirements for Interface Builder to correctly parse MacRuby files?

2010-02-01 Thread Paul Howson
Hello Laurent et al,

In an attempt to ease code management for a large document class, I split the 
code for my NSDocument subclass into a number of separate Ruby files. e.g. 
MyDocument-base.rb, MyDocument-commands.rb, and so on, reopening the Ruby class 
and adding more methods in each file.

When the class was in a single source file (eg. MyDocument.rb), Interface 
Builder would correctly parse this and recognise outlets and action methods.

Splitting the class into separate files had the effect of causing Interface 
Builder to no longer recognise outlets and action methods.

Can you please explain how and when IB parses Ruby source files and why 
splitting a class into separate files breaks the parsing?

Is this documented somewhere?

Any suggestions for a way around this?

Thanks,
Paul Howson
Queensland Australia
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Re: [MacRuby-devel] Requirements for Interface Builder to correctly parse MacRuby files?

2010-02-01 Thread Paul Howson
On 02/02/2010, at 2:14 PM, Laurent Sansonetti wrote:

> Hi Paul,
> 
> In theory, splitting files should not be an issue. Keep in mind that the IB 
> parser is very rudimentary at the moment (we are working on a much better 
> solution for a future release), so if you define classes into modules it may 
> not work.
> 
> A good way to know exactly what IB will read is to call the parser by 
> yourself, manually, from the command line:
> 
> $ /Developer/usr/bin/rb_nibtool -f MyController.rb
> 
> You should see on the terminal a property list, basically an array of 
> dictionaries, each one being a class with outlets/actions sub-dictionaries.
> 
> Laurent

Thanks Laurent. That flushed out the problem. When re-opening classes across 
multiple files, I was not declaring the superclass relationship again. e.g.

FILE 1:

class A < NSDocument
  …
end

FILE 2:

class A
  …
end

When the Ruby compiler sees FILE 2 it already knows A is a subclass of 
NSDocument. But the Interface Builder parser obviously treats files in 
isolation and needs to be told about that relationship in each file.

Problem solved.

Paul
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Re: [MacRuby-devel] [MacRuby] #628: CTFramesetterCreateFrame doesn't like the CFRange type

2010-05-05 Thread Paul Howson
On 26/04/2010, at 1:33 PM, MacRuby wrote:

> #628: CTFramesetterCreateFrame doesn't like the CFRange type
> ---+
> Reporter:  ea...@…|Owner:  lsansone...@…
> Type:  defect |   Status:  closed   
> Priority:  major  |Milestone:  MacRuby 0.6  
> Component:  MacRuby|   Resolution:  fixed
> Keywords: |  
> ---+
> Changes (by lsansone...@…):
> 
>  * status:  new => closed
>  * resolution:  => fixed
>  * milestone:  => MacRuby 0.6

Hi Laurent,

What would be a feasible workaround for this problem, given than I'm using 
MacRuby 0.5 ?

i.e. I'm also trying to call:

CTFramesetterCreateFrame(framesetter, CFRangeMake(0, 0), path, nil)

The second argument is a range which produces the error.

Can I edit the bridge support file? Or is there some other workaround? Can I 
use a more recent built of MacRuby? Or are these too buggy compared to 0.5?

Thanks,
Paul Howson
Queensland, Australia
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Re: [MacRuby-devel] [MacRuby] #628: CTFramesetterCreateFrame doesn't like the CFRange type

2010-05-06 Thread Paul Howson
On 06/05/2010, at 1:18 PM, Laurent Sansonetti wrote:

> Hi Paul,
> 
> On May 5, 2010, at 7:57 PM, Paul Howson wrote:
> 
>> On 26/04/2010, at 1:33 PM, MacRuby wrote:
>> 
>> Hi Laurent,
>> 
>> What would be a feasible workaround for this problem, given than I'm using 
>> MacRuby 0.5 ?
>> 
>> i.e. I'm also trying to call:
>> 
>> CTFramesetterCreateFrame(framesetter, CFRangeMake(0, 0), path, nil)
>> 
>> The second argument is a range which produces the error.
>> 
>> Can I edit the bridge support file? Or is there some other workaround? Can I 
>> use a more recent built of MacRuby? Or are these too buggy compared to 0.5?
> 
> Do you have any reason why you cannot use 0.6? It's much stabler than 0.5 :)
> 
> http://www.macruby.org/blog/2010/04/30/macruby06.html
> 
> Laurent

No reason other than I had not yet noticed the announcement of 0.6! I will 
upgrade.

Thanks.
Paul
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[MacRuby-devel] How to set up and retrieve returned buffer from CTFrameGetLineOrigins?

2010-05-06 Thread Paul Howson
I need some help with this example which arises at the boundary between MacRuby 
and the C Core Text framework.

Consider the following Core Text function definition:

 void CTFrameGetLineOrigins( CTFrameRef frame, CFRange range, CGPoint 
origins[] )

The third argument is defined as:

"origins
The buffer to which the origins are copied. The buffer must have at least as 
many elements as specified by range's length."

Clearly origins is a buffer and a series of CGPoint structures are copied into 
it.

How can this be handled in MacRuby? Specifically:

1. What kind of argument should be passed? Presumably something constructed 
using the Pointer.new_with_type() function? Documentation on this function is 
very hard to find.

2. How to access the individual CGPoints in the returned buffer? This is not an 
Objective-C / MacRuby array object. It is just an address to a buffer. Easy to 
do in C, but how to do in MacRuby?

--------
Paul Howson
Warwick Qld Australia
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Re: [MacRuby-devel] How to set up and retrieve returned buffer from CTFrameGetLineOrigins?

2010-05-06 Thread Paul Howson
On 07/05/2010, at 1:08 PM, Matt Aimonetti wrote:

> Duly noted ;)

Actually Matt, could you perhaps consider a chapter on the subject of 
interfacing MacRuby to the various "Core xxx" C-language frameworks, which is 
not quite as straightforward as the seamless integration of MacRuby with Cocoa 
classes.

Paul Howson

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Re: [MacRuby-devel] How to set up and retrieve returned buffer from CTFrameGetLineOrigins?

2010-05-06 Thread Paul Howson
On 07/05/2010, at 1:03 PM, Laurent Sansonetti wrote:

> Hi Paul,
> 
> You're right, the Pointer class must be used. Sorry about the lack of 
> documentation. Here is a snippet that might work:
> 
> # n must be defined
> origins = Pointer.new(CGPoint.type, n) # this builds a pointer to n times 
> CGPoint
> CTFrameGetLineOrigins(frame, CFRange.new(0, n), origins)
> 
> Using Pointer#[] you can simply dereference a given slot in the pointer, as 
> in C.
> 
> n.times { |i| p origins[i] } # should print nth points
> 
> Let me know if this works or not for you.
> 
> Laurent

Thanks Laurent. I will try it out.

Paul

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[MacRuby-devel] CFRange (Boxed) elements not accessible

2010-05-30 Thread Paul Howson
Hello Laurent and team,

The following code:

 string_range = CTLineGetStringRange(line)

returns a CFRange, which is a C-structure with two elements: location and 
length.

Attempting to access:

 string_range.location

results in the error message:

 undefined method `location' for # (NoMethodError)

(I think a similar error related to CLLocation has been discussed here before.)

Is there a way to get around this problem?

-
Paul Howson
Warwick Qld Australia
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Re: [MacRuby-devel] CFRange (Boxed) elements not accessible

2010-05-30 Thread Paul Howson
On 31/05/2010, at 11:47 AM, Laurent Sansonetti wrote:

> Hi Paul,
> 
> I believe that here the function is typed to return an anonymous struct 
> (likely a bug in the bridgesupport file), so MacRuby won't be able to 
> associate it as an NSRange. You may be able to access location using 
> string_range[0] and length using string_range[1].
> 
> Laurent

Thanks Laurent.

That appears not to work:

   undefined method `[]' for # (NoMethodError)

Is the bridgesupport file produced elsewhere within Apple? (i.e. out of your 
control)

Any other suggestions for getting around this bug?

Thanks,
Paul

-
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Re: [MacRuby-devel] CFRange (Boxed) elements not accessible

2010-05-31 Thread Paul Howson
On 31/05/2010, at 6:12 PM, Laurent Sansonetti wrote:

>> Any other suggestions for getting around this bug?
> 
> It is possible to fix the problem by manually editing the file.
> 
> /System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreText.framework/Resources/BridgeSupport/CoreText.bridgesupport
> 
> Then, locate the description of CTLineGetStringRange. It should be something 
> like:
> 
> 
> 
> 
> 
> 
> And replace with:
> 
> 
> 
> 
> 
> 
> I understand that editing the file manually is probably not an option if you 
> intend to ship the project later, but I think we can add a fix in trunk to 
> expose the fields. We can maybe find another workaround if needed.

Editing the file fixed the problem. By the time I'm ready to ship something, 
these changes will have percolated through the system I'm sure.

Thanks,
Paul.

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[MacRuby-devel] Where are the rake tasks?

2010-07-14 Thread Paul Howson
This might be a dumb question, but I notice mention of various macruby-related 
rake tasks (e.g "rake clean")

Is there a standard set of rake tasks supplied with macruby? Where are the rake 
files for these tasks? 

----
Paul Howson
Warwick Qld Australia
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Re: [MacRuby-devel] CVImageBufferRef vs __NSCFType

2010-08-24 Thread Paul Howson
On 24/08/2010, at 8:49 AM, Thibault Martin-Lagardette wrote:

> It is a problem in the QTKit bridgesupport, where 
> `captureOutput:didOutputVideoFrame:withSampleBuffer:fromConnection` is not 
> defined. 
> This means it's defintely not something you are doing wrong (and it's not 
> MacRuby's fault either – it has no way, without proper BridgeSupport support, 
> to know the actual type of the parameter)
> 
> This has been fixed in BridgeSupport already, and should be released 
> soon(-ish).
> However, I don't think there is any workaround in the meantime, except 
> waiting for the BridgeSupport update.

Previous BridgeSupport errors and omissions have been fixed by manual editing 
of the BridgeSupport file pending an updated version. Can you supply a copy of 
the fix in this case?

Paul Howson

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Re: [MacRuby-devel] Advice for Total Tyro

2011-10-17 Thread Paul Howson
On 16/10/2011, at 10:12 AM, Bryan Harrison wrote:
> Objective-C is not without a certain homely charm, but Ruby is obviously the 
> more modern language.  So…
> 
>   • Does Xcode treat Ruby as family, or is it a stepchild toiling in the 
> ashes?  Are there other tools I'll need?
> 
>   • What's Apple's attitude toward Ruby applications?
> 
>   • Can Ruby take advantage of the (finally!) modern memory management 
> features released with iOS 5?
> 
>   • Will I end up have having learn Objective-C regardless?
> 
> Basically, "If you were me, what would you do, and what order might you do it 
> in?"

Hi Bryan,

Your 5-10 year time frame is a key factor.

I started developing an app for the Mac circa 2003 in RealBasic. A couple of 
years ago I converted it to MacRuby (wrote a convertor in Ruby to do this then 
manually tweaked). This was after getting to know Ruby through Rails.

Despite (or perhaps because of) a background in C years ago, I've tried to 
avoid Objective-C, although I've read the Hillegass book and done some of the 
examples. I just prefer Ruby for various reasons. I'm using TextMate for 
editing the code and XCode for running it. I'm not trying to ship a product 
yet, so I can live with the occasional MacRuby teething problems. They will be 
fixed in time.

On OSX, MacRuby does do modern memory management, which is a big plus IMHO.

Paul Howson


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