Bug#661928: debian-policy: recipe for determining shlib package name

[Jakub Wilk <jwilk@debian.org>]

* Jakub Wilk <jwilk@debian.org>, 2012-03-02, 19:47:
> > > Lintian suggests the following command to determine correct name 
> > > for a shared library package:
> > >
> > > objdump -p /path/to/libfoo-bar.so.1.2.3 | sed -n -e's/^[[:space:]]*SONAME[[:space:]]*//p' | sed -e's/\([0-9]\)\.so\./\1-/; s/\.so\.//'
> > >
> > > Could this code be included in Policy §8.1, perhaps as a 
> > > footnote? Thanks.
> > That seems to be missing tr [[:upper:]] [[:lower:]].
> Hmm, right. And it should replace underscores with dashes.

The actualy lintian code is:

foreach my $expected_name (@sonames) {
    $expected_name =~ s/([0-9])\.so\./$1-/;
    $expected_name =~ s/\.so(?:\.|\z)//;
    $expected_name =~ s/_/-/g;
    if ((lc($expected_name) eq $pkg)
        || (lc($expected_name) eq $base_pkg)) {
        $match_found = 1;
        last;
    }
}

This can be translated to the following sed command:

LC_ALL=C sed -r -e's/([0-9])\.so\./\1-/; s/\.so(\.|$)//; y/_/-/; s/(.*)/\L&/'

--
Jakub Wilk