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

[Hans-Christoph Steiner]

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
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>>>
>>>
>>>
>>
>>
>>
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News is what people want to keep hidden and everything else is  
publicity.          - Bill Moyers