[PD] Spell checking / existence of a word

[Claude Heiland-Allen]

Nicolas Montgermont wrote:
> Hi Frank,
> 
> Frank Barknecht a écrit :
>> Hallo,
>>
>> You could use Lua instead. It's like [shell] on steroids, if you
>> employ something like "io.popen" like this:
>>
>>  word = get_word_from_inlet()
>>  cmd = "aspell -c " .. word
>>  p = assert(io.popen(cmd))
>>  result = p:read("*all")
>>
>> Lua is trivial to build on OS-X. I just did it and I'm a complete OS-X
>> idiot. Here's how: You check out pdlua from goto10 subversion, edit
>> Makefile.static to let it find m_pd.h and build for OS-X ("PLATFORM =
>> macosx"), then do "make -f Makefile.static" while connected to the net
>> to let make download and build Lua for you and that's it. OS-X seems
>> to come with everything needed.
>>
>> Ciao
>>   
> pdlua compile and load well here I think, console says:
> 
> lua 0.5 (GPL) 2008 Claude Heiland-Allen <claudiusmaximus at goto10.org>
> lua: compiled for pd-0.40 on Jul 16 2008 11:41:16
> 
> After that I wrote a little pd_luax object called lspell.pd_luax and 
> containing:
> 
> local LSpell = pd.Class:new():register("lspell")

This could be the problem, registering classes is usual in .pd_lua files 
but not .pd_luax files.

> function LSpell:initialize(name, atoms)
>     self.outlets = 1
>     self.inlets = 1
>     return true
> end
> 
> function LSpell:in_1_symbol(s)
>     pd.post("received :" .. s)
>     word = get_word_from_inlet()
>     cmd = "aspell -c " .. word
>     p = assert(io.popen(cmd))
>     result = p:read("*all")
> end
> 
> I know there is no output yet but the code is bugging at the 
> get_word_from_inlet() function.

where did you define get_word_from_inlet?  You should just be able to 
use 's', as that's the symbol atom passed to the inlet method.

> When I do :
> 
> [symbol toto(
> |
> [lspell]
> 
> pd prints:
> 
> received :toto
> error: lua: error in dispatcher:
> [string "lspell.pd_luax"]:14: attempt to call global 
> 'get_word_from_inlet' (a nil value)
> 
> I have no really idea of the way pdlua manage functions and everything. 
> Must I dig more into the pd_lua examples or is this only a lua problem I 
> can handle if searching universal lua docs?

This seems to be a Lua problem more than a pdlua problem - you use 
get_word_from_inlet() but don't define it anywhere.

A pdlua manual is on my todo list, but for now the examples are the best 
documentation.

> 
> Thanks for your answers,
> 
> Nicolas


Hope this helps,


Claude
-- 
http://claudiusmaximus.goto10.org