[Paraview] How PV detects valid file formats?

[David E DeMarle]

Sorry I was mistaken. CanReadFile happens only after you attempt to
open the file.
I do not know why one particular "*.cas" file would not show up in the list.

David E DeMarle
Kitware, Inc.
R&D Engineer
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x109



On Mon, Nov 9, 2009 at 12:43 PM, Nehme Bilal <nehmebilal at gmail.com> wrote:
> Dave,
>
> Are you saying that can CanReadFile  is called even before the file is
> selected ! ?
> Fred is saying that his file is not showing up at all, so if
> CanReadFile is called only after the file has is selected,
> his problem is not releated to CanReadFile.
>
> Nehme
>
>
> 2009/11/9 David E DeMarle <dave.demarle at kitware.com>:
>> In general yes.
>>
>> In this instance, the only standard reader for ".cas" files is
>> vtkFLUENTReader. Unless you've loaded some plugin then,
>> vtkFLUENTReader is what considers your file to be corrupt.
>>
>> David E DeMarle
>> Kitware, Inc.
>> R&D Engineer
>> 28 Corporate Drive
>> Clifton Park, NY 12065-8662
>> Phone: 518-371-3971 x109
>>
>>
>>
>> On Mon, Nov 9, 2009 at 10:30 AM, Fred Fred <stan1313 at hotmail.fr> wrote:
>>> Should I understand your answer, esp. the CanReadFile Method, as follows: my
>>> fluent file with extension .cas may be corrupt and since there are several
>>> formats with .cas extension, the CanReadFile method associated with all of
>>> these formats returned false and them the file name disappeared from the
>>> list?
>>>
>>>> From: dave.demarle at kitware.com
>>>> Date: Mon, 9 Nov 2009 08:53:53 -0500
>>>> Subject: Re: [Paraview] How PV detects valid file formats?
>>>> To: stan1313 at hotmail.fr
>>>> CC: paraview at paraview.org
>>>>
>>>> The choice works like this:
>>>>
>>>> ParaView has an internal list for the initial file extension to reader
>>>> mapping.
>>>> The default list is in
>>>> Qt/Components/Resources/XML/ParaViewReaders.xml. When you load a
>>>> reader type plugin that list is extended by any new extensions from
>>>> the reader's xml.
>>>> When there is more than one reader that recognizes the same file
>>>> extension, the reader that comes last in the list is used, or more
>>>> specifically tried, first.
>>>> I say tried because readers _can_ have a CanReadFile method, in which
>>>> the reader snoops the file to determine if it really can read it. If
>>>> that call returns false, the next reader gets a chance and so on.
>>>>
>>>> David E DeMarle
>>>> Kitware, Inc.
>>>> R&D Engineer
>>>> 28 Corporate Drive
>>>> Clifton Park, NY 12065-8662
>>>> Phone: 518-371-3971 x109
>>>>
>>>>
>>>>
>>>> On Sun, Nov 8, 2009 at 11:17 AM, Fred Fred <stan1313 at hotmail.fr> wrote:
>>>> > My problem is I have a Fluent data file with extension .cas and this
>>>> > file is
>>>> > not displayed in the list of available files if I select Fluent in the
>>>> > list.
>>>> > I have another file that is detected though, so I wonder if PV reads the
>>>> > header of all files suspected of being read before decidig to offer them
>>>> > as
>>>> > valid choices to the user? Or is the issue anywhere else?
>>>> >
>>>> >
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