Re: How to test for the existance of an audio file

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There is a "play.one" option, that plays the first file that is found, 
and only one, out of a list.  There is a "play.any" I think, that plays 
any that can be found and skips any not found in a list.  The default is 
to abort if not found.

Tony White wrote:
> Hi David and all,
> 
> In bayonne script, if I list several files to play eg.
> 
> play %1 %2 %3 ......
> 
> ...where %1, %2, %3 etc. variables have been set to file1.au,
> file2.au, file3.au .....
> 
> so long as all three files exist on disk, then all is well.  BUT if,
> for example, file1.au doesn't exist, then the play will abort -
> without playing the rest of the files.
> 
> The files are dynamically generated outside the bayonne environment -
> and may sometimes be missing.  So I am stuck on how to test within a
> script that a file exists before attempting to play it - and indeed to
> substitute a 'default' file instead.
> 
> The only way i can see is to jump out into a TGI - but is there
> already a way to test this?  And if not, maybe this would be a
> possible test to include in the next version?
> 
> Oh - and before I get the suggestion:
> play %1
> play %2
> play %3
> ....
> 
> yes, that works insofar as playing all  files, even if one is missing
> - but there is a 'step' delay between each 'play' statement - which I
> want to avoid... and there seems to be no way to see if a file is
> missing so as to be able to substitute a 'default' file instead.
> 
> Thanks,

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