add --with-source option and Packages/Sources support

We support "./foobar.deb" as a way to install a deb file directly.
Recently .changes files were added. This highlights a problem as you
can't add the changes file without also trying to install all of them.
Now, it could also be handy to add entire Packages/Sources files to
perhaps get a bunch of packages in without installing them all
implicitly.

This commit introduces --with-source which allows to add *.deb, *.changes,
*.dsc, source-dirs, Packages & Sources files (the later can also be
compressed) without also installing them.

1 files changed, 5 insertions, 1 deletions

diff --git a/apt-pkg/deb/debindexfile.cc b/apt-pkg/deb/debindexfile.cc
index 6a23b2c00..65bd3e6ee 100644
--- a/apt-pkg/deb/debindexfile.cc
+++ b/apt-pkg/deb/debindexfile.cc
@@ -80,7 +80,11 @@ debPackagesIndex::debPackagesIndex(IndexTarget const &Target, bool const Trusted
 std::string debPackagesIndex::ArchiveInfo(pkgCache::VerIterator const &Ver) const
 {
    std::string Res = Target.Description;
-   Res.erase(Target.Description.rfind(' '));
+   {
+      auto const space = Target.Description.rfind(' ');
+      if (space != std::string::npos)
+	 Res.erase(space);
+   }
 
    Res += " ";
    Res += Ver.ParentPkg().Name();