X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/2ac6ce927cda2847baf8e71a74e595e6b82c6d98..f8ac1720a94468d1384e88a57729e6d9801b56fd:/apt-pkg/algorithms.cc?ds=sidebyside

diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc
index 11f5b5671..3978e7561 100644
--- a/apt-pkg/algorithms.cc
+++ b/apt-pkg/algorithms.cc
@@ -26,7 +26,8 @@
 
     
 #include <apti18n.h>
-    
+#include <sys/types.h>
+#include <regex.h>
 #include <iostream>
 									/*}}}*/
 using namespace std;
@@ -1329,6 +1330,19 @@ void pkgMarkPackage(pkgDepCache &Cache,
 }
 
 
+// Helper for APT::NeverAutoRemove, always include the packages matching
+// this regexp into the root-set
+inline bool 
+pkgMarkAlwaysInclude(pkgCache::PkgIterator p, vector<regex_t*> alwaysMark)
+{
+   for(unsigned int i=0;i<alwaysMark.size();i++)
+      if (regexec(alwaysMark[i],p.Name(),0,0,0) == 0)
+	 return true;
+
+   return false;
+}
+
+// the main mark algorithm
 bool pkgMarkUsed(pkgDepCache &Cache, InRootSetFunc func)
 {
    bool follow_recommends;
@@ -1339,6 +1353,11 @@ bool pkgMarkUsed(pkgDepCache &Cache, InRootSetFunc func)
    {
       Cache[p].Marked=false;
       Cache[p].Garbage=false;
+
+      // debug output
+      if(_config->FindB("Debug::pkgAutoRemove",false) 
+	 && Cache[p].Flags & pkgCache::Flag::Auto)
+  	 std::clog << "AutoDep: " << p.Name() << std::endl;
    }
 
    // init vars
@@ -1346,17 +1365,46 @@ bool pkgMarkUsed(pkgDepCache &Cache, InRootSetFunc func)
    follow_suggests=_config->FindB("APT::AutoRemove::SuggestsImportant", false);
 
 
-   // do the mark part
+   // init the "NeverAutoRemove" variable
+   vector<regex_t *> neverAutoRemoveRegexp;
+   Configuration::Item const *Opts;
+   Opts = _config->Tree("APT::NeverAutoRemove");
+   if (Opts != 0 && Opts->Child != 0)
+   {
+      Opts = Opts->Child;
+      for (; Opts != 0; Opts = Opts->Next)
+      {
+	 if (Opts->Value.empty() == true)
+	    continue;
+
+	 regex_t *p = new regex_t;
+	 if(regcomp(p,Opts->Value.c_str(),
+		    REG_EXTENDED | REG_ICASE |  REG_NOSUB) != 0)
+	 {
+	    regfree(p);
+	    for(unsigned int i=0;i<neverAutoRemoveRegexp.size();i++)
+	       regfree(neverAutoRemoveRegexp[i]);
+	    return _error->Error("Regex compilation error for APT::NeverAutoRemove");
+	 }
+	 neverAutoRemoveRegexp.push_back(p);
+      }
+   }
+
+
+   // do the mark part, this is the core bit of the algorithm
    for(pkgCache::PkgIterator p=Cache.PkgBegin(); !p.end(); ++p)
    {
       if( (func != NULL ? (*func)(p) : false) ||
+	   pkgMarkAlwaysInclude(p, neverAutoRemoveRegexp) ||
 	 !(Cache[p].Flags & pkgCache::Flag::Auto) ||
 	  (p->Flags & pkgCache::Flag::Essential))
           
       {
+	 // the package is installed (and set to keep)
 	 if(Cache[p].Keep() && !p.CurrentVer().end())
 	    pkgMarkPackage(Cache, p, p.CurrentVer(),
 			   follow_recommends, follow_suggests);
+	 // the package is to be installed 
 	 else if(Cache[p].Install())
 	    pkgMarkPackage(Cache, p, Cache[p].InstVerIter(Cache),
 			   follow_recommends, follow_suggests);
@@ -1369,14 +1417,13 @@ bool pkgMarkUsed(pkgDepCache &Cache, InRootSetFunc func)
   {
      pkgDepCache::StateCache &state=Cache[p];
 
-     if(!state.Marked)
+     // if it is not marked and it is installed, it's garbage 
+     if(!state.Marked && !p.CurrentVer().end())
      {
-	// mark installed but not yet marked stuff as garbage
-	if(p->CurrentVer != 0) {
-	   state.Garbage=true;
+	state.Garbage=true;
+	if(_config->FindB("Debug::pkgAutoRemove",false))
 	   std::cout << "Garbage: " << p.Name() << std::endl;
-	}
-
+     
 #if 0   // mvo: the below bits still needs to be ported
 
 	// Be sure not to re-delete already deleted packages.
@@ -1434,5 +1481,11 @@ bool pkgMarkUsed(pkgDepCache &Cache, InRootSetFunc func)
 #endif
      }
   }
+
+   // cleanup
+   for(unsigned int i=0;i<neverAutoRemoveRegexp.size();i++)
+      regfree(neverAutoRemoveRegexp[i]);
+   
+
    return true;
 }