Check if output file is blocked

[gasteigerjo]

If I compile while the output file (pdf) is opened with Adobe Reader and therefore blocked, the compilation freezes. I need to restart Atom to remedy this error. This lock should be checked before compilation.

[m0nhawk]

This should be better done via DDE, it supported in both Acrobat and Sumatra.

Thus, It'll require only DocClose before the build and DocOpen latter.

[thomasjo]

This should be better done via DDE, it supported in both Acrobat and Sumatra.

Except there is, to my knowledge, no sensible way to work directly with DDE/OLE from Node.js. Simply put, there's no way I'm implementing any code for that in this package. However, if there exists a reasonable npm package that provides DDE/OLE interop, I'd likely merge a PR using it.

At the end of the day, I have to maintain all the code in this package, and DDE/OLE is a rabbit hole that I'd rather not venture into.

[yitzchak]

I am closing this since a DDE dependency is not a direction that we want to go. Will reopen if needed.