Re: streamdevice and input strings

[Pierrick M Hanlet via Tech-talk <tech-talk at aps.anl.gov>]

Many thanks Dirk,
That worked.  I was wondering why the example was only for waveforms.
Best wishes,
Pierrick


On 4/17/24 00:26, Zimoch Dirk wrote:
> [EXTERNAL] – This message is from an external sender
>
> Hello Pierrick,
>
> StreamDevice uses Separator only for array records (waveform, aai, aao). There, it reads alternating the format and the separator. But the format %s only stops at a space, not at your separator. Thus, the first %s gets the complete string and there is no separator left to read. Here, with redirections to multiple scalar records, the Separator is not used at all. Still the %s consumes as much as it can, that is everything.
> What you need is %[^,] instead of %s (that reads strings up to comma) and explicit commas in between:
> in  "%(\$1:G1Name)[^,],%(\$1:G2Name)[^,], %(\$1:G3Name)[^,],%(\$1:G4Name)[^,]";
>
> Also, one of the formats (I suggest the last) can be without redirection if the corresponding G*Name record (G4 in this case) is the one which calls this protocol.
>
> Best regards,
> Dirk
>
>> Am 17.04.2024 um 01:24 schrieb Pierrick M Hanlet via Tech-talk <tech-talk at aps.anl.gov>:
>>
>> Hi all,
>> I'm on a linux box with AL9.3, base 7.07, and StreamDevice 2.8.24.
>> I have a string input, which the controller gives as: A1,A2,B1,B2.
>> I want to read them individually as separate names, i.e. separate records.
>>
>> My protocol is:
>> get_names {
>>      separator=",";
>>      out "CID";
>>      in  "%(\$1:G1Name)s%(\$1:G2Name)s%(\$1:G3Name)s%(\$1:G4Name)s";
>> }
>>
>> although, I've also tried as:
>> get_names {
>>      separator=",";
>>      out "CID";
>>      in "%(\$1:G1Name)s,%(\$1:G2Name)s,%(\$1:G3Name)s,%(\$1:G4Name)s";
>> }
>>
>> or as:
>> get_names {
>>      out "CID";
>>      in "%(\$1:G1Name)s,%(\$1:G2Name)s,%(\$1:G3Name)s,%(\$1:G4Name)s";
>> }
>>
>> Of course, it works perfectly if I have:
>> get_names {
>>      out "CID";
>>      in "%(\$1:G1Name)2c,%(\$1:G2Name)2c,%(\$1:G3Name)2c,%(\$1:G4Name)2c";
>> }
>> However, the name can be up to 8 characters long.
>>
>> I don't understand why separator doesn't work as I'm using it.
>> Thank you,
>> Pierrick
>>
>>
>> --
>> Pierrick Hanlet
>> Fermi National Accelerator
>> Accelerator Front End Controls
>> +1-630-840-5555 -- lab
>> +1-312-687-4980 -- mobile
>>
>> "Whether you think you can or think you can't, you're right" -- Henry Ford
>>

-- 
Pierrick Hanlet
Fermi National Accelerator
Accelerator Front End Controls
+1-630-840-5555 -- lab
+1-312-687-4980 -- mobile

"Whether you think you can or think you can't, you're right" -- Henry Ford