From 71d73928ae58d6faf81e7405830881e47281f423 Mon Sep 17 00:00:00 2001
From: David Kalnischkies <kalnischkies@gmail.com>
Date: Mon, 28 Mar 2011 14:10:49 +0200
Subject: be able to disable resolver with APT::Get::AutoSolving

---
 cmdline/apt-get.cc | 66 +++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 46 insertions(+), 20 deletions(-)

(limited to 'cmdline')

diff --git a/cmdline/apt-get.cc b/cmdline/apt-get.cc
index c793b67a5..d71b6fba7 100644
--- a/cmdline/apt-get.cc
+++ b/cmdline/apt-get.cc
@@ -764,7 +764,7 @@ struct TryToInstall {
    unsigned long AutoMarkChanged;
    APT::PackageSet doAutoInstallLater;
 
-   TryToInstall(pkgCacheFile &Cache, pkgProblemResolver &PM, bool const &FixBroken) : Cache(&Cache), Fix(&PM),
+   TryToInstall(pkgCacheFile &Cache, pkgProblemResolver *PM, bool const &FixBroken) : Cache(&Cache), Fix(PM),
 			FixBroken(FixBroken), AutoMarkChanged(0) {};
 
    void operator() (pkgCache::VerIterator const &Ver) {
@@ -782,8 +782,10 @@ struct TryToInstall {
 	 ioprintf(c1out,_("Skipping %s, it is not installed and only upgrades are requested.\n"),
 		  Pkg.FullName(true).c_str());
       else {
-	 Fix->Clear(Pkg);
-	 Fix->Protect(Pkg);
+	 if (Fix != NULL) {
+	    Fix->Clear(Pkg);
+	    Fix->Protect(Pkg);
+	 }
 	 Cache->GetDepCache()->MarkInstall(Pkg,false);
 
 	 if (State.Install() == false) {
@@ -871,16 +873,19 @@ struct TryToRemove {
    bool PurgePkgs;
    unsigned long AutoMarkChanged;
 
-   TryToRemove(pkgCacheFile &Cache, pkgProblemResolver &PM) : Cache(&Cache), Fix(&PM),
+   TryToRemove(pkgCacheFile &Cache, pkgProblemResolver *PM) : Cache(&Cache), Fix(PM),
 				PurgePkgs(_config->FindB("APT::Get::Purge", false)) {};
 
    void operator() (pkgCache::VerIterator const &Ver)
    {
       pkgCache::PkgIterator Pkg = Ver.ParentPkg();
 
-      Fix->Clear(Pkg);
-      Fix->Protect(Pkg);
-      Fix->Remove(Pkg);
+      if (Fix != NULL)
+      {
+	 Fix->Clear(Pkg);
+	 Fix->Protect(Pkg);
+	 Fix->Remove(Pkg);
+      }
 
       if ((Pkg->CurrentVer == 0 && PurgePkgs == false) ||
 	  (PurgePkgs == true && Pkg->CurrentState == pkgCache::State::NotInstalled))
@@ -1385,10 +1390,10 @@ bool TryToInstallBuildDep(pkgCache::PkgIterator Pkg,pkgCacheFile &Cache,
 
    if (Remove == true)
    {
-      TryToRemove RemoveAction(Cache, Fix);
+      TryToRemove RemoveAction(Cache, &Fix);
       RemoveAction(Pkg.VersionList());
    } else if (Cache[Pkg].CandidateVer != 0) {
-      TryToInstall InstallAction(Cache, Fix, BrokenFix);
+      TryToInstall InstallAction(Cache, &Fix, BrokenFix);
       InstallAction(Cache[Pkg].CandidateVerIter(Cache));
       InstallAction.doAutoInstall();
    } else
@@ -1791,8 +1796,10 @@ bool DoInstall(CommandLine &CmdL)
    bool BrokenFix = false;
    if (Cache->BrokenCount() != 0)
       BrokenFix = true;
-   
-   pkgProblemResolver Fix(Cache);
+
+   pkgProblemResolver* Fix = NULL;
+   if (_config->FindB("APT::Get::AutoSolving", true) == true)
+      Fix = new pkgProblemResolver(Cache);
 
    static const unsigned short MOD_REMOVE = 1;
    static const unsigned short MOD_INSTALL = 2;
@@ -1823,6 +1830,8 @@ bool DoInstall(CommandLine &CmdL)
    if (_error->PendingError() == true)
    {
       helper.showVirtualPackageErrors(Cache);
+      if (Fix != NULL)
+	 delete Fix;
       return false;
    }
 
@@ -1837,17 +1846,29 @@ bool DoInstall(CommandLine &CmdL)
 
       for (unsigned short i = 0; order[i] != 0; ++i)
       {
-	 if (order[i] == MOD_INSTALL) {
+	 if (order[i] == MOD_INSTALL)
 	    InstallAction = std::for_each(verset[MOD_INSTALL].begin(), verset[MOD_INSTALL].end(), InstallAction);
+	 else if (order[i] == MOD_REMOVE)
+	    RemoveAction = std::for_each(verset[MOD_REMOVE].begin(), verset[MOD_REMOVE].end(), RemoveAction);
+      }
+
+      if (Fix != NULL)
+      {
+         for (unsigned short i = 0; order[i] != 0; ++i)
+         {
+	    if (order[i] != MOD_INSTALL)
+	       continue;
 	    InstallAction.propergateReleaseCandiateSwitching(helper.selectedByRelease, c0out);
 	    InstallAction.doAutoInstall();
 	 }
-	 else if (order[i] == MOD_REMOVE)
-	    RemoveAction = std::for_each(verset[MOD_REMOVE].begin(), verset[MOD_REMOVE].end(), RemoveAction);
       }
 
       if (_error->PendingError() == true)
+      {
+	 if (Fix != NULL)
+	    delete Fix;
 	 return false;
+      }
 
       /* If we are in the Broken fixing mode we do not attempt to fix the
 	 problems. This is if the user invoked install without -f and gave
@@ -1856,14 +1877,19 @@ bool DoInstall(CommandLine &CmdL)
       {
 	 c1out << _("You might want to run 'apt-get -f install' to correct these:") << endl;
 	 ShowBroken(c1out,Cache,false);
-
+	 if (Fix != NULL)
+	    delete Fix;
 	 return _error->Error(_("Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution)."));
       }
-   
-      // Call the scored problem resolver
-      Fix.InstallProtect();
-      if (Fix.Resolve(true) == false)
-	 _error->Discard();
+
+      if (Fix != NULL)
+      {
+	 // Call the scored problem resolver
+	 Fix->InstallProtect();
+	 if (Fix->Resolve(true) == false)
+	    _error->Discard();
+	 delete Fix;
+      }
 
       // Now we check the state of the packages,
       if (Cache->BrokenCount() != 0)
-- 
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