[PD-dev] the future of [declare] and canvas_savedeclarationsto()

Thu May 22 21:33:14 CEST 2008

The only real change to s_main.c in that path is the addition of  
realpath().  It seems that the function there is just copying the  
strings back and forth between sbuf and sbuf2, so I just added one  
more iteration of that back and forth for realpath().

.hc

On May 22, 2008, at 9:25 PM, Miller Puckette wrote:

> I might have missed it, but I didn't see that realpath() itself  
> made it into
> the patch... ?
>
> M
>
> On Thu, May 22, 2008 at 09:22:12PM +0200, Hans-Christoph Steiner  
> wrote:
>>
>> The realpath() is definitely related.  If you start Pd using a
>> relative path, like I do when doing dev work (e.g. make && ../bin/
>> pd), then sys_libdir will be a relative path.  That means it is
>> impossible to make absolute paths using sys_libdir, which is what I
>> need to do to make [import] work, or loading libdirs with [declare -
>> lib] and the libdir loader.
>>
>> I can't see any problems that realpath() might cause.
>>
>> .hc
>>
>> On May 22, 2008, at 8:45 PM, Miller Puckette wrote:
>>
>>> OK, I took most of the patch (not the "realpath()" call which seems
>>> unrelated) and uploaded to SVN, unless I'm mistaken.
>>>
>>> cheers
>>> Miller
>>>
>>> On Wed, May 21, 2008 at 08:22:23PM +0200, Hans-Christoph Steiner
>>> wrote:
>>>>
>>>> I was looking into this a bit more, and from what I can tell, the
>>>> canvas-local path (ce_path) is always relative to the path of the
>>>> parent patch.  Here's the commit for pd-extended that adds support
>>>> for absolute paths:
>>>>
>>>> http://pure-data.svn.sourceforge.net/viewvc/pure-data?
>>>> view=rev&revision=9862
>>>>
>>>> Also, I submitted a patch:
>>>>
>>>> http://sourceforge.net/tracker/index.php?
>>>> func=detail&aid=1917574&group_id=55736&atid=478072
>>>>
>>>> .hc
>>>>
>>>>
>>>> On May 19, 2008, at 9:42 PM, Hans-Christoph Steiner wrote:
>>>>
>>>>>
>>>>> I think I fixed the full paths bug, here's the commit:
>>>>>
>>>>> http://pure-data.svn.sourceforge.net/viewvc/pure-data?
>>>>> view=rev&revision=9856
>>>>>
>>>>> .hc
>>>>>
>>>>> On May 19, 2008, at 8:03 PM, Hans-Christoph Steiner wrote:
>>>>>
>>>>>>
>>>>>> I think this issue is pretty clear, and the languages that I know
>>>>>> would fall along the lines of "each patch/abstraction has its own
>>>>>> namespace" or in other words "#include only affects the one .c
>>>>>> file",  "import only affects the one .py file", etc.  So I agree
>>>>>> with Frank.  Global settings are global, and canvas-local  
>>>>>> settings
>>>>>> are local to the original file.
>>>>>>
>>>>>> The "semi-functional" part is the full paths that Marius  
>>>>>> mentioned.
>>>>>>
>>>>>> Then the other question is how to use something like "#X  
>>>>>> declare"/
>>>>>> canvas_savedeclarationsto() in externals.  I'd like to create an
>>>>>> [import] modelled after Python's import does, so I'd like to use
>>>>>> "#X declare"/canvas_savedeclarationsto() with it.
>>>>>>
>>>>>> .hc
>>>>>>
>>>>>> On May 19, 2008, at 6:33 PM, Miller Puckette wrote:
>>>>>>
>>>>>>> Hi all,
>>>>>>>
>>>>>>> I use 'declare' all the time.. don't think it's  
>>>>>>> semifunctional at
>>>>>>> all.
>>>>>>> I think the questions about how declares should act inside
>>>>>>> abstractions
>>>>>>> are hard to resolve; in my own usage (and in the way I suggest
>>>>>>> others might
>>>>>>> want to use declare) it's always in the main patch, as a way to
>>>>>>> show the
>>>>>>> patch what libraries, etc, it needs.
>>>>>>>
>>>>>>> cheers
>>>>>>> Miller
>>>>>>>
>>>>>>> On Mon, May 19, 2008 at 06:28:31PM +0200, Hans-Christoph Steiner
>>>>>>> wrote:
>>>>>>>>
>>>>>>>> Hey,
>>>>>>>>
>>>>>>>> So I am diving into the whole canvas-local namespace and
>>>>>>>> [declare]
>>>>>>>> issue these days.  I like the new "#X declare"/
>>>>>>>> canvas_savedeclarationsto() functionality, I think it could be
>>>>>>>> useful
>>>>>>>> for a lot of things.  I was thinking of making an API to use
>>>>>>>> it in
>>>>>>>> externals, something like sys_register_loader().  I have two
>>>>>>>> questions, first, how entrenched is the current behavior of
>>>>>>>> [declare]?  It currently is only semi-functional, and I  
>>>>>>>> think few
>>>>>>>> people use it.
>>>>>>>>
>>>>>>>> The second is how to structure this for general use.  I have
>>>>>>>> thought
>>>>>>>> of two ways:
>>>>>>>>
>>>>>>>> - make "declare" the key word and allow other objectclasses to
>>>>>>>> have
>>>>>>>> their own custom "#X declare" data.
>>>>>>>>
>>>>>>>> - allow objectclasses to register their own declaration key
>>>>>>>> words,
>>>>>>>> like [import] could have "#X import".
>>>>>>>>
>>>>>>>> The first would mean changing the behavior of [declare], the
>>>>>>>> second
>>>>>>>> could lead to a big mess...
>>>>>>>>
>>>>>>>> .hc
>>>>>>>>
>>>>>>>>
>>>>>>>> --------------------------------------------------------------- 
>>>>>>>> --
>>>>>>>> --
>>>>>>>> -----
>>>>>>>> ----
>>>>>>>>
>>>>>>>> Man has survived hitherto because he was too ignorant to know
>>>>>>>> how to
>>>>>>>> realize his wishes.  Now that he can realize them, he must  
>>>>>>>> either
>>>>>>>> change them, or perish.    -William Carlos Williams
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
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>>>>>>
>>>>>>
>>>>>>
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>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------------ 
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>>>>> You can't steal a gift. Bird gave the world his music, and if you
>>>>> can hear it, you can have it. - Dizzy Gillespie
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
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>>>>
>>>>
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