Re: [Bug-apl] AP100 problem

[Juergen Sauermann]

Hi Frederick,

I did as proposed and it seems to work on my machine:

eaddress@hidden:~$ Sound/foobar.apl

1

ls Sound/*
Sound/foobar.apl
Sound/playsnd
0
ls Sound/p*
Sound/playsnd
0
ls Sound/pl*
Sound/playsnd
0
ls Sound/pla*
Sound/playsnd
0

The following in interesting. Your script complains about:

sh: -c: line 0: unexpected EOF while looking for matching ``'
sh: -c: line 1: syntax error: unexpected end of file
1

But there is no backquote ( ` ) anywhere in your script or in the AP100 code. And the script (which ?) seems to
have only 2 lines.

To nail this down a little, please try the following:

- enable dynamic logging (via ./configure). You may have that already, if not do a

make develop
sudo make install

in the top-level GNU APL directory. Then enable logging facility 35 in APL:

      ]LOG 35

This will tell us how the externam programs are called by AP100. Fr example:

      ]LOG 35
    Log facility 'Shared Variable operations          ' is now ON

      100 ⎕SVO 'OS' ⋄ 0 ⍴ ⎕DL 1
Using TCP socket towards APserver...
connected to APserver, socket is 7

apl100 got MAKE_OFFER
1

      OS ← ⎕ ← 'ls Sound/pla*'
ls Sound/pla*
apl100 got ASSIGN_VALUE
AP100(6465)  got command ls Sound/pla*
ls: cannot access Sound/pla*: No such file or directory
AP100(6465)  finished command with exit code 512

In the above example the file did not exist, but we can see in the third last like which command
was given to AP100.

Please try ]log 35 both in your script and by entering the lines in the script interactively (to see if the
problem is caused by scripting or something else). I haven't changed the AP stuff in the last years, but there
were some changes recently that affected many files at the same time. It would be good if you could figure
when (in terms of SVN versions or calendar dates) things started to fail.

Thanks,
Jürgen Sauermann

On 02/14/2017 02:29 AM, Frederick Pitts wrote:

Gentle people,

	I am having trouble using the AP100 processor.  Code that
worked reliably two to three years ago, no longer works.

	The problem can be replicated (I hope) as follows:

	1) Create a folder named 'Sound'.
	2) Touch a file in 'Sound' named 'playsnd'
	3) Copy the attached 'foobar.apl' into the folder containing
'Sound' and run ./foobar.apl after making sure it has execute
permission.

	The content of foobar.apl is:

#!/usr/local/bin/apl --script

100 ⎕SVO 'OS' ⋄ 0 ⍴ ⎕DL 1
OS ← ⎕ ← 'ls Sound/*'
OS
OS ← ⎕ ← 'ls Sound/p*'
OS
OS ← ⎕ ← 'ls Sound/pl*'
OS
OS ← ⎕ ← 'ls Sound/pla*'
OS

)OFF

	The output for the above, contained in attached
'foobar.apl.out', is:


1

ls Sound/*
Sound/playsnd
0
ls Sound/p*
Sound/playsnd
0
ls Sound/pl*
Sound/playsnd
0
ls Sound/pla*
sh: -c: line 0: unexpected EOF while looking for matching ``'
sh: -c: line 1: syntax error: unexpected end of file
1

	Why is the last invocation of the AP100 processor failing?  The
error messages reported by 'sh' indicate shell in-line substitution and
end-of-file processing problems.  BTW, I'm running on Fedora 25 where
'sh' is actually a symbolic link to 'bash'.  And the actual application
involves using the AP100 processor to invoke sound apps from an APL
game.

Regards,

Fred