Add ?automatic and ?garbage patterns

These patterns allow you to identify automatically installed
packages, as well as automatically installed packages that are
no longer reachable from the manually installed ones.

2 files changed, 30 insertions, 0 deletions

diff --git a/apt-pkg/cachefilter-patterns.cc b/apt-pkg/cachefilter-patterns.cc
index dd5d741d3..6b506b740 100644
--- a/apt-pkg/cachefilter-patterns.cc
+++ b/apt-pkg/cachefilter-patterns.cc
@@ -210,8 +210,12 @@ std::unique_ptr<APT::CacheFilter::Matcher> PatternParser::aPattern(std::unique_p
 
    if (node->matches("?architecture", 1, 1))
       return std::make_unique<APT::CacheFilter::PackageArchitectureMatchesSpecification>(aWord(node->arguments[0]));
+   if (node->matches("?automatic", 0, 0))
+      return std::make_unique<Patterns::PackageIsAutomatic>(file);
    if (node->matches("?false", 0, 0))
       return std::make_unique<APT::CacheFilter::FalseMatcher>();
+   if (node->matches("?garbage", 0, 0))
+      return std::make_unique<Patterns::PackageIsGarbage>(file);
    if (node->matches("?name", 1, 1))
       return std::make_unique<APT::CacheFilter::PackageNameMatchesRegEx>(aWord(node->arguments[0]));
    if (node->matches("?not", 1, 1))
diff --git a/apt-pkg/cachefilter-patterns.h b/apt-pkg/cachefilter-patterns.h
index 3097ba94b..4c2ef48df 100644
--- a/apt-pkg/cachefilter-patterns.h
+++ b/apt-pkg/cachefilter-patterns.h
@@ -113,6 +113,32 @@ struct PatternParser
    std::string aWord(std::unique_ptr<PatternTreeParser::Node> &nodeP);
 };
 
+namespace Patterns
+{
+using namespace APT::CacheFilter;
+
+struct PackageIsAutomatic : public PackageMatcher
+{
+   pkgCacheFile *Cache;
+   explicit PackageIsAutomatic(pkgCacheFile *Cache) : Cache(Cache) {}
+   bool operator()(pkgCache::PkgIterator const &Pkg) override
+   {
+      assert(Cache != nullptr);
+      return ((*Cache)[Pkg].Flags & pkgCache::Flag::Auto) != 0;
+   }
+};
+
+struct PackageIsGarbage : public PackageMatcher
+{
+   pkgCacheFile *Cache;
+   explicit PackageIsGarbage(pkgCacheFile *Cache) : Cache(Cache) {}
+   bool operator()(pkgCache::PkgIterator const &Pkg) override
+   {
+      assert(Cache != nullptr);
+      return (*Cache)[Pkg].Garbage;
+   }
+};
+} // namespace Patterns
 } // namespace Internal
 } // namespace APT
 #endif