hidden support more apt-get/apt-cache commands in apt

apt is supposed to be a user-friendly interface, so while these commands
are usually poweruser material and therefore do not need to be shown in
general introduction manpages/help messages its of no use to not allow
users to use them.

This includes clean, autoclean, build-dep, source, download, changelog,
depends, rdepends and showsrc – it doesn't include more non-interactive
commands like dump or xvcg as those are usually used by scripts if at
all.

Closes: 778234, 780700, 781237

1 files changed, 152 insertions, 0 deletions

diff --git a/apt-private/private-depends.cc b/apt-private/private-depends.cc
new file mode 100644
index 000000000..955f3dc67
--- /dev/null
+++ b/apt-private/private-depends.cc
@@ -0,0 +1,152 @@
+// Include Files							/*{{{*/
+#include<config.h>
+
+#include <apt-pkg/algorithms.h>
+#include <apt-pkg/cachefile.h>
+#include <apt-pkg/cacheiterators.h>
+#include <apt-pkg/cacheset.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/cmndline.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/pkgcache.h>
+
+#include <apt-private/private-cacheset.h>
+#include <apt-private/private-depends.h>
+
+#include <iostream>
+#include <string>
+#include <vector>
+
+#include <stddef.h>
+
+#include <apti18n.h>
+									/*}}}*/
+
+// ShowDepends - Helper for printing out a dependency tree		/*{{{*/
+static bool ShowDepends(CommandLine &CmdL, bool const RevDepends)
+{
+   pkgCacheFile CacheFile;
+   pkgCache *Cache = CacheFile.GetPkgCache();
+   if (unlikely(Cache == NULL))
+      return false;
+
+   CacheSetHelperVirtuals helper(false);
+   APT::VersionList verset = APT::VersionList::FromCommandLine(CacheFile, CmdL.FileList + 1, APT::CacheSetHelper::CANDIDATE, helper);
+   if (verset.empty() == true && helper.virtualPkgs.empty() == true)
+      return _error->Error(_("No packages found"));
+   std::vector<bool> Shown(Cache->Head().PackageCount);
+
+   bool const Recurse = _config->FindB("APT::Cache::RecurseDepends", false);
+   bool const Installed = _config->FindB("APT::Cache::Installed", false);
+   bool const Important = _config->FindB("APT::Cache::Important", false);
+   bool const ShowDepType = _config->FindB("APT::Cache::ShowDependencyType", RevDepends == false);
+   bool const ShowVersion = _config->FindB("APT::Cache::ShowVersion", false);
+   bool const ShowPreDepends = _config->FindB("APT::Cache::ShowPre-Depends", true);
+   bool const ShowDepends = _config->FindB("APT::Cache::ShowDepends", true);
+   bool const ShowRecommends = _config->FindB("APT::Cache::ShowRecommends", Important == false);
+   bool const ShowSuggests = _config->FindB("APT::Cache::ShowSuggests", Important == false);
+   bool const ShowReplaces = _config->FindB("APT::Cache::ShowReplaces", Important == false);
+   bool const ShowConflicts = _config->FindB("APT::Cache::ShowConflicts", Important == false);
+   bool const ShowBreaks = _config->FindB("APT::Cache::ShowBreaks", Important == false);
+   bool const ShowEnhances = _config->FindB("APT::Cache::ShowEnhances", Important == false);
+   bool const ShowOnlyFirstOr = _config->FindB("APT::Cache::ShowOnlyFirstOr", false);
+   bool const ShowImplicit = _config->FindB("APT::Cache::ShowImplicit", false);
+
+   while (verset.empty() != true)
+   {
+      pkgCache::VerIterator Ver = *verset.begin();
+      verset.erase(verset.begin());
+      pkgCache::PkgIterator Pkg = Ver.ParentPkg();
+      Shown[Pkg->ID] = true;
+
+      std::cout << Pkg.FullName(true) << std::endl;
+
+      if (RevDepends == true)
+	 std::cout << "Reverse Depends:" << std::endl;
+      for (pkgCache::DepIterator D = RevDepends ? Pkg.RevDependsList() : Ver.DependsList();
+	    D.end() == false; ++D)
+      {
+	 switch (D->Type) {
+	    case pkgCache::Dep::PreDepends: if (!ShowPreDepends) continue; break;
+	    case pkgCache::Dep::Depends: if (!ShowDepends) continue; break;
+	    case pkgCache::Dep::Recommends: if (!ShowRecommends) continue; break;
+	    case pkgCache::Dep::Suggests: if (!ShowSuggests) continue; break;
+	    case pkgCache::Dep::Replaces: if (!ShowReplaces) continue; break;
+	    case pkgCache::Dep::Conflicts: if (!ShowConflicts) continue; break;
+	    case pkgCache::Dep::DpkgBreaks: if (!ShowBreaks) continue; break;
+	    case pkgCache::Dep::Enhances: if (!ShowEnhances) continue; break;
+	 }
+	 if (ShowImplicit == false && D.IsImplicit())
+	    continue;
+
+	 pkgCache::PkgIterator Trg = RevDepends ? D.ParentPkg() : D.TargetPkg();
+
+	 if((Installed && Trg->CurrentVer != 0) || !Installed)
+	 {
+
+	    if ((D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or && ShowOnlyFirstOr == false)
+	       std::cout << " |";
+	    else
+	       std::cout << "  ";
+
+	    // Show the package
+	    if (ShowDepType == true)
+	       std::cout << D.DepType() << ": ";
+	    if (Trg->VersionList == 0)
+	       std::cout << "<" << Trg.FullName(true) << ">";
+	    else
+	       std::cout << Trg.FullName(true);
+	    if (ShowVersion == true && D->Version != 0)
+	       std::cout << " (" << pkgCache::CompTypeDeb(D->CompareOp) << ' ' << D.TargetVer() << ')';
+	    std::cout << std::endl;
+
+	    if (Recurse == true && Shown[Trg->ID] == false)
+	    {
+	       Shown[Trg->ID] = true;
+	       verset.insert(APT::VersionSet::FromPackage(CacheFile, Trg, APT::CacheSetHelper::CANDIDATE, helper));
+	    }
+
+	 }
+
+	 // Display all solutions
+	 std::unique_ptr<pkgCache::Version *[]> List(D.AllTargets());
+	 pkgPrioSortList(*Cache,List.get());
+	 for (pkgCache::Version **I = List.get(); *I != 0; I++)
+	 {
+	    pkgCache::VerIterator V(*Cache,*I);
+	    if (V != Cache->VerP + V.ParentPkg()->VersionList ||
+		  V->ParentPkg == D->Package)
+	       continue;
+	    std::cout << "    " << V.ParentPkg().FullName(true) << std::endl;
+
+	    if (Recurse == true && Shown[V.ParentPkg()->ID] == false)
+	    {
+	       Shown[V.ParentPkg()->ID] = true;
+	       verset.insert(APT::VersionSet::FromPackage(CacheFile, V.ParentPkg(), APT::CacheSetHelper::CANDIDATE, helper));
+	    }
+	 }
+
+	 if (ShowOnlyFirstOr == true)
+	    while ((D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or) ++D;
+      }
+   }
+
+   for (APT::PackageSet::const_iterator Pkg = helper.virtualPkgs.begin();
+	 Pkg != helper.virtualPkgs.end(); ++Pkg)
+      std::cout << '<' << Pkg.FullName(true) << '>' << std::endl;
+
+   return true;
+}
+									/*}}}*/
+// Depends - Print out a dependency tree				/*{{{*/
+bool Depends(CommandLine &CmdL)
+{
+   return ShowDepends(CmdL, false);
+}
+									/*}}}*/
+// RDepends - Print out a reverse dependency tree			/*{{{*/
+bool RDepends(CommandLine &CmdL)
+{
+   return ShowDepends(CmdL, true);
+}
+									/*}}}*/