On Sun, 12 Jan 2014 17:09:47 +0100 Guillem Jover <[email protected]> wrote: > Hi! > > On Sun, 2014-01-12 at 16:05:29 +0200, Andrei POPESCU wrote: > > Control: reassign -1 libdpkg-perl > > > > On Sb, 11 ian 14, 17:36:22, Geoffrey Thomas wrote: > > > Package: libdpkg-query > > > Version: 1.17.5 > > > Severity: wishlist > > > > I'm guessing you meant -perl, not -query. > > Thanks, for reassigning. > > > > dpkg-query's manpage says that --control-path is deprecated in favor > > > of --control-show and --control-list, but Dpkg::Path only offers a > > > wrapper around --control-path. Can you expose --control-show and > > > --control-list via some API in Dpkg::Path? > > Yeah, I was meaning to do something along those lines when switching > dpkg-dev scripts away from get_control_path. Unfortunately this > slightly complicates the code a bit. > > Thanks, > Guillem > >
A further thorn in this case: A --control-list followed by --control-show is basically twice a slow as --control-path. Each of them takes about 0.05s in my tests, so the "correct" way costs nearly 0.1s (for 1 ctrl file per unique pkg). Anything that needs to use these options in bulk (e.g. dpkg-shlibdeps) would pay dearly for doing the "right thing". :-/ In dpkg-shlibdeps case, the performance overhead could be reduced to the current level if it was possible to do something like: dpkg-query --control-show <pkg> <ctrl-file> "missing-as-empty" (with dpkg-query just emitting the empty string if <ctrl-file> was missing and exiting with 0). @Guillem: Would you be happy to accept a patch to support that third parameter for dpkg-query --control-show ? Thanks, ~Niels
