Unix-based systems not using CUPS
chris.sherlock79 at gmail.com
Mon Apr 3 23:31:55 UTC 2017
I have been going over our Unix printing classes to understand them better for my online book, Inside LibreOffice (found here and very much under construction - https://www.gitbook.com/book/chrissherlock1/inside-libreoffice/details)
The implementation of the Unix printing subsystem is under the psp namespace, which I believe implements the psprint printing system - at least according to this document on the OpenOffice website:
And I quote:
> StarOffice 5.2 (and earlier) relied on a thirdparty solution for printing. This solution could of course not be open sourced as it was a commercial product. So when StarOffice became OpenOffice there was no printing possible at all on the Unix platforms; just a wrapper was provided that contained stubs fitting the missing symbols left in vcl. A new print solution was desperately needed, so a variety of existing print solutions were examined, the most notable of which were gnome-print and Xprint. Gnome-print did not really fit into OpenOffice.org, since it would require to link against a huge amount of other gnome libraries, too, which is unacceptable for OpenOffice.org, because we want to run on many desktops. Xprint was designed as a standard Unix print solution and has many advantages: code for the display would work exactly the same way on the printer. A proof of concept version was created by Martin Maher and Oisin Boydell with help from Hamburg and the US which made it into OpenOffice.org as a temporary solution to have minimal print support on Unix. But Xprint in its current state misses many features that become increasingly important: fast character metric handling, access to glyph substitution tables, easy configurability on a per user basis just to name a few. Also one cannot really say that it has become the standard solution for printing on Unix yet; in fact only recently it was awakened from its long beauty sleep having its major bugs fixed so it is now useable.
> This led to the decision that as long as there is no standard solution scratching a sufficient number of our itches OpenOffice.org should do like everyone else and produce its own PostScript code. Hence psprint entered the game.
PrinterInfoManager seems to be the class that does all the management. However, there is now a CUPSManager. I was wondering what other systems the PrinterInfoManager now caters for?
I think it currently just uses lpr to do printing, but t I may be wrong.
However, now that CUPS is pretty much standardised on mostly everything - including, it appears, on an increasing number of *BSD systems - is psprint still required for systems that are sticking with lpr?
Sent from my iPhone
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