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Batch file processing
Posted: Sat Apr 16, 2016 3:38 pm
by lohill
I have a program that takes an input file and re-formats it to an output file in the same directory. I would like to be able to run it as part of a batch processing system where i can have a command line step that looks like: Formatter <inputfile> <outputfile>. I assume that must be possible but need some help getting started. Any ideas or examples would be appreciated.
Thanks,
Larry
Re: Batch file processing
Posted: Sat Apr 16, 2016 6:04 pm
by Klaus
Hi Larry,
hm, does a "simple" repeat loop not work for this?
Best
Klaus
Re: Batch file processing
Posted: Sat Apr 16, 2016 11:00 pm
by lohill
Hi Klaus,
What I want to be able to do its to type a command into the DOS console (if the is the correct way to say it) that would look like this:
MyReformatApp <pathofInpotFile>,<pathofOutputFile> and my LiveCode application (MyReformatApp.exe) would translate the file from one format to another and then shut itself down. Does that make sense? This program could then be called multiple times from a batch process. The batch process would have the repeat loop facilities.
Larry
Re: Batch file processing
Posted: Sun Apr 17, 2016 1:46 am
by FourthWorld
You can run a LiveCode standalone as a faceless process by calling it with -ui in the command line, e.g.:
path/to/my/livecodeapp.exe -ui someotherparams
...where "someotherparams" are any arguments you want to pass to your app, which can be obtained through the $1, $2, $3, etc. global variables. If you need to know the number of arguments passed to it your can check $#.
Re: Batch file processing
Posted: Sun Apr 17, 2016 10:02 am
by Klaus
AHA!
Sorry, did not understand that you want to control your LC app via SHELL!
Yes, what Richard says
Re: Batch file processing
Posted: Mon Apr 18, 2016 5:54 pm
by lohill
Klaus and Richard,
Here are the guts of what I have so far and it seems to work. I am not sure how it will behave in a batch environment however. Should there be some kind of wait command before quitting to give time for the process to complete? Is a message sent back from the console that I can trap to know when to quit?
Code: Select all
on startup
hide this stack
put word 1 to -1 of lower($1) into lInput
if lInput is empty or lInput="-h" or lInput="/?" then
put "A path for a valid input file is required. Path for output file is optional." into tHelp
write tHelp to stdOut
quit
end if
put word 1 to -1 of lower($2) into lOutput
if lOutput is empty then
set the itemdelimiter to slash
put the last item of lInput into tFile
put item 1 to -2 of lInput into lOutPut
put slash & "Out_" & tFile after lOutput
end if
put formatFile(lInput) into tResult
put tResult into URL ("File:" & lOutput)
quit
end startup
Thanks for any ideas,
Larry
Re: Batch file processing
Posted: Tue Apr 19, 2016 4:14 am
by lohill
Can my LiveCode program be made to have the ability to stop the batch processing until my program has completed the file conversion and quit?
Larry
Re: Batch file processing
Posted: Thu May 19, 2016 4:07 pm
by MaxV
See
http://livecode.wikia.com/wiki/Shell
The current handler pauses until the shell returns its result. If the command was successful but did not return anything, the shell function returns empty.
shell() function stop livecode until the command is executed.
Then you can use