Re: [NTG-context] how to set the name of outputfile using a value defined in the source

On 21 Sep 2018, at 10:30, Henri Menke wrote:

On 21/09/18 20:09, J Huisman wrote:

...

Hi all,

I'm getting back to using ConTeXt after a couple of years, so I might be missing something obvious...

I would like to add an I.D. code to the name of my outputfile, but since this will be used in an automated environment I would like to load the ID-code from the source file.

MWE: test.tex

\starttext

\def\idcode{something}

Some text, whatever.

\stoptext

If I typeset with: context text --result=test-idcode the result is obviously "test-idcode.pdf", but I want to get a file name: "test-something.pdf" Is this possible?

Once you enter TeX, the output file has been opened. The very concept of a filesystem forbids you to change the filehandle while writing. So no, it is not possible easily.

But it can be done sneakily … % start demo \enabledirectives[system.callbacks.permitoverloads] % previous line allows redefinition of ‘wrapup_run’ % to keep the code short, I use a direct definition of % \idcode and \ctxlua. Nicer would be to store the desired % output name in a lua variable and replace the % \ctxlua with \startluacode … \stopluacode with % a string.format inside it. \def\idcode{something} \ctxlua{callbacks.register('wrapup_run', function() os.execute("cp \jobname.pdf doc-\idcode.pdf") end)} \starttext Hello from \idcode \stoptext % stop demo Taco