* use mark-and-sweep from aptitude now as GC algorithm

[apt.git] / cmdline / apt-get.cc

diff --git a/cmdline/apt-get.cc b/cmdline/apt-get.cc
index ae81af3e6cddfa59a0bfb2b6b6ed37f4f8a94955..9d97f8756eb9abf5f91e6ef9100bcba426891267 100644 (file)
--- a/cmdline/apt-get.cc
+++ b/cmdline/apt-get.cc
@@ -58,6 +58,7 @@
 #include <errno.h>
 #include <regex.h>
 #include <sys/wait.h>
+#include <sstream>
                                                                        /*}}}*/
 
 using namespace std;
@@ -992,7 +993,7 @@ bool InstallPackages(CacheFile &Cache,bool ShwKept,bool Ask = true,
         cerr << _("Unable to correct missing packages.") << endl;
         return _error->Error(_("Aborting install."));
       }
-                
+
       _system->UnLock();
       pkgPackageManager::OrderResult Res = PM->DoInstall();
       if (Res == pkgPackageManager::Failed || _error->PendingError() == true)
@@ -1355,6 +1356,47 @@ bool DoUpdate(CommandLine &CmdL)
    return true;
 }
                                                                        /*}}}*/
+// DoAutomaticRemove - Remove all automatic unused packages            /*{{{*/
+// ---------------------------------------------------------------------
+/* Remove unused automatic packages */
+bool DoAutomaticRemove(CacheFile &Cache)
+{
+   if(_config->FindI("Debug::pkgAutoRemove",false))
+      std::cout << "DoAutomaticRemove()" << std::endl;
+
+   if (_config->FindB("APT::Get::Remove",true) == false)
+      return _error->Error(_("We are not supposed to delete stuff, can't "
+                            "start AutoRemover"));
+
+   // do the actual work
+   pkgMarkUsed(Cache);
+
+   // look over the cache to see what can be removed
+   for (pkgCache::PkgIterator Pkg = Cache->PkgBegin(); ! Pkg.end(); ++Pkg)
+   {
+      if (Cache[Pkg].Garbage &&
+          (Pkg->CurrentVer != 0 && Cache[Pkg].Install() == false && 
+          Cache[Pkg].Delete() == false))
+      {
+         fprintf(stdout,"We could delete %s\n", Pkg.Name());
+         Cache->MarkDelete(Pkg,_config->FindB("APT::Get::Purge",false));
+      }
+   }
+
+   // Now see if we destroyed anything
+   if (Cache->BrokenCount() != 0)
+   {
+      c1out << _("Hmm, seems like the AutoRemover destroyed something which really\n"
+                "shouldn't happen. Please file a bug report against apt.") << endl;
+      c1out << endl;
+      c1out << _("The following information may help to resolve the situation:") << endl;
+      c1out << endl;
+      ShowBroken(c1out,Cache,false);
+
+      return _error->Error(_("Internal Error, AutoRemover broke stuff"));
+   }
+   return true;
+}
 // DoUpgrade - Upgrade all packages                                    /*{{{*/
 // ---------------------------------------------------------------------
 /* Upgrade all packages without installing new packages or erasing old
@@ -1380,6 +1422,15 @@ bool DoUpgrade(CommandLine &CmdL)
 /* Install named packages */
 bool DoInstall(CommandLine &CmdL)
 {
+   // Lock the list directory
+   FileFd Lock;
+   if (_config->FindB("Debug::NoLocking",false) == false)
+   {
+      Lock.Fd(GetLock(_config->FindDir("Dir::State::Lists") + "lock"));
+      if (_error->PendingError() == true)
+        return _error->Error(_("Unable to lock the list directory"));
+   }
+   
    CacheFile Cache;
    if (Cache.OpenForInstall() == false || 
        Cache.CheckDeps(CmdL.FileSize() != 1) == false)
@@ -1546,6 +1597,11 @@ bool DoInstall(CommandLine &CmdL)
       return _error->Error(_("Broken packages"));
    }   
    
+   if (_config->FindB("APT::Get::AutomaticRemove")) {
+      if (!DoAutomaticRemove(Cache)) 
+        return false;
+   }
+
    /* Print out a list of packages that are going to be installed extra
       to what the user asked */
    if (Cache->InstCount() != ExpectedInst)
@@ -1565,8 +1621,8 @@ bool DoInstall(CommandLine &CmdL)
         
         if (*J == 0) {
            List += string(I.Name()) + " ";
-        VersionsList += string(Cache[I].CandVersion) + "\n";
-     }
+           VersionsList += string(Cache[I].CandVersion) + "\n";
+        }
       }
       
       ShowList(c1out,_("The following extra packages will be installed:"),List,VersionsList);
@@ -2410,6 +2466,7 @@ void GetInitialize()
    _config->Set("APT::Get::Fix-Broken",false);
    _config->Set("APT::Get::Force-Yes",false);
    _config->Set("APT::Get::List-Cleanup",true);
+   _config->Set("APT::Get::AutomaticRemove",false);
 }
                                                                        /*}}}*/
 // SigWinch - Window size change signal handler                                /*{{{*/
@@ -2465,6 +2522,7 @@ int main(int argc,const char *argv[])
       {0,"remove","APT::Get::Remove",0},
       {0,"only-source","APT::Get::Only-Source",0},
       {0,"arch-only","APT::Get::Arch-Only",0},
+      {0,"automatic-remove","APT::Get::AutomaticRemove",0},
       {0,"allow-unauthenticated","APT::Get::AllowUnauthenticated",0},
       {'c',"config-file",0,CommandLine::ConfigFile},
       {'o',"option",0,CommandLine::ArbItem},