Thanks again!
I am sorry I have sent so many messages on a maybe
no so relevant topic. This is probably caused by the
fact that I don't know much lisp.
What I wanted to do was maybe too general.
I can do without it:
I'll use a path in the /tmp directory with no capital letters.
What I wanted was to have the path as a Maxima variable,
so that the user could choose that path by setting a Maxima varianle.
Something like
SERVER_PATH : "/blabla/...";
and then use my routine which reads from the file at the path
given by the variable.
The data from this file are integer numbers which I
wanted to read as such in order to avoid "parse_string".
Thanks
Fabrizio
On Thu, 20 Sep 2007, Richard Fateman wrote:
> If you are always reading the same file, then consider this function, in
> lisp, which you may load in to maxima.
>
> (defun $readnums_from_lll_server()
> (let ((ans nil) (n 0))
> (with-open-file (s "/lll_server/lll_server.fifo")
> (loop while (setf n (read s nil nil))do ;; read until there are no
> more numbers, when read will return nil
> (push n ans)))
> (cons '(mlist) (nreverse ans)))) ;;make a Maxima list by putting a
> header on it.
>
>
> Instead of seeking a more and more complicated solution, I hope this
> encourages you to use a simple one.
> RJF
>
>
>
>
>> -----Original Message-----
>> From: maxima-bounces at math.utexas.edu
>> [mailto:maxima-bounces at math.utexas.edu] On Behalf Of Fabrizio Caruso
>> Sent: Thursday, September 20, 2007 9:11 AM
>> To: van Nek
>> Cc: maxima at math.utexas.edu
>> Subject: Re: [Maxima] reading integers from a stream
>>
>> Thanks
>>
>> It could work but as you said it would not
>> work in the next version of Maxima.
>>
>>
>> So maybe I should find some other solution or
>> simply give up for the moment using directories with
>> capital letters when using files in Maxima.
>> Hoping that the next version of Maxima allows
>> reading integers from stream even those
>> whose paths have capital letters.
>>
>> Thanks anyway
>>
>> Fabrizio
>>
>>
>> On Thu, 20 Sep 2007, van Nek wrote:
>>
>>> Hi Fabrizio,
>>>
>>> I checked on ubuntu that openr handles paths case sensitive.
>>> parsetoken (which won't be in Maxima 5.14 anymore) uses the
>> Lisp parser, so perhaps it is
>>> faster than parse_string.
>>> I hope the below code can help you.
>>>
>>> Volker van Nek
>>>
>>> /home/volker/Work/myFile.txt:
>>> 123 234 345
>>> 456 567 678
>>> 789 890 900
>>>
>>> (%i1) stream: openr("/home/volker/Work/myFile.txt");
>>> (%o1) #<INPUT BUFFERED FILE-STREAM CHARACTER
>> /home/volker/Work/myFile.txt
>>> @1>
>>> (%i2) while ( stringp( line: readline(stream) ) ) do (
>>> listOfStrings: split(line),
>>> listOfNumbers: if stringp(listOfStrings[1]) then
>> map(parsetoken,listOfStrings) else [],
>>> print(listOfNumbers) );
>>> [123, 234, 345]
>>> [456, 567, 678]
>>> [789, 890, 900]
>>> []
>>> (%o2) done
>>> (%i3) close(stream);
>>> (%o3) true
>>>
>>>
>>>
>>> Am 20 Sep 2007 um 16:43 hat Fabrizio Caruso geschrieben:
>>>
>>>> It seems to work in a non-case-sensitive way.
>>>>
>>>> I am using Linux and the path has most of the times
>>>> at leat one capital letter.
>>>>
>>>> If I do this
>>>>
>> ?open(?"//home/caruso//Work//code//c++//ntl_server//lll_server
>> //lll_server.fifo"),
>>>> I get
>>>>
>>>> nonexistent directory: #P"/home/caruso/work/"
>>>>
>>>> Is there a solution?
>>>>
>>>> Fabrizio
>>>>
>>>>
>>>> On Thu, 20 Sep 2007, Richard Fateman wrote:
>>>>
>>>>>
>>>>>
>>>>>> -----Original Message-----
>>>>> RJF:
>>>>>> You may be able to read integers separated by new lines or by
>>>>>> spaces by
>>>>>> using lisp.
>>>>>> Try foo:?open(filename);
>>>>>> ?read(foo); ?read(foo); ....
>>>>>> Getting the filename in the right form, as a string, may
>> be tricky.
>>>>>> RJF
>>>>>>
>>>>> Hint ... Try foo:?open(?"c:\\temp\\numbers") for example.
>>>>>
>>>> _______________________________________________
>>>> Maxima mailing list
>>>> Maxima at math.utexas.edu
>>>> http://www.math.utexas.edu/mailman/listinfo/maxima
>>>
>>>
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>