* cmdline/apt-mark:

[apt.git] / apt-pkg / policy.cc

diff --git a/apt-pkg/policy.cc b/apt-pkg/policy.cc
index 029a37df72c99e6550ccea1ae3250dd6be45ec26..d8b8825c2400654ebc03d045a706683b3c2bf016 100644 (file)
--- a/apt-pkg/policy.cc
+++ b/apt-pkg/policy.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
-// $Id: policy.cc,v 1.2 2001/02/20 07:03:17 jgg Exp $
+// $Id: policy.cc,v 1.10 2003/08/12 00:17:37 mdz Exp $
 /* ######################################################################
 
    Package Version Policy implementation
@@ -34,8 +34,12 @@
 #include <apt-pkg/sptr.h>
     
 #include <apti18n.h>
+
+#include <iostream>
                                                                        /*}}}*/
 
+using namespace std;
+
 // Policy::Init - Startup and bind to a cache                          /*{{{*/
 // ---------------------------------------------------------------------
 /* Set the defaults for operation. The default mode with no loaded policy
@@ -73,7 +77,7 @@ bool pkgPolicy::InitDefaults()
    }
 
    // Apply the defaults..
-   SPtr<bool> Fixed = new bool[Cache->HeaderP->PackageFileCount];
+   SPtrArray<bool> Fixed = new bool[Cache->HeaderP->PackageFileCount];
    memset(Fixed,0,sizeof(*Fixed)*Cache->HeaderP->PackageFileCount);
    signed Cur = 989;
    StatusOverride = false;
@@ -83,10 +87,6 @@ bool pkgPolicy::InitDefaults()
       pkgVersionMatch Match(I->Data,I->Type);
       for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); F++)
       {
-/* hmm?
- if ((F->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource)
-           continue;*/
-
         if (Match.FileMatch(F) == true && Fixed[F->ID] == false)
         {
            if (I->Priority != 0 && I->Priority > 0)
@@ -118,20 +118,10 @@ bool pkgPolicy::InitDefaults()
    best package is. */
 pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
 {
-   const Pin &PPkg = Pins[Pkg->ID];
-   
    // Look for a package pin and evaluate it.
-   signed Max = 0;
-   pkgCache::VerIterator Pref(*Cache);
-   if (PPkg.Type != pkgVersionMatch::None)
-   {
-      pkgVersionMatch Match(PPkg.Data,PPkg.Type);
-      Pref = Match.Find(Pkg);
-      Max = PPkg.Priority;
-      if (PPkg.Priority == 0)
-        Max = 989;
-   }
-      
+   signed Max = GetPriority(Pkg);
+   pkgCache::VerIterator Pref = GetMatch(Pkg);
+
    /* Falling through to the default version.. Setting Max to zero
       effectively excludes everything <= 0 which are the non-automatic
       priorities.. The status file is given a prio of 100 which will exclude
@@ -145,9 +135,18 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
       pin that stays at that setting.
     */
    for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; Ver++)
-   {      
+   {
       for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; VF++)
       {
+        /* If this is the status file, and the current version is not the
+           version in the status file (ie it is not installed, or somesuch)
+           then it is not a candidate for installation, ever. This weeds
+           out bogus entries that may be due to config-file states, or
+           other. */
+        if ((VF.File()->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource &&
+            Pkg.CurrentVer() != Ver)
+           continue;
+                        
         signed Prio = PFPriority[VF.File()->ID];
         if (Prio > Max)
         {
@@ -169,7 +168,6 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
            break;
       }            
    }
-   
    return Pref;
 }
                                                                        /*}}}*/
@@ -182,24 +180,24 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
 void pkgPolicy::CreatePin(pkgVersionMatch::MatchType Type,string Name,
                          string Data,signed short Priority)
 {
-   pkgCache::PkgIterator Pkg = Cache->FindPkg(Name);
    Pin *P = 0;
    
    if (Name.empty() == true)
-      P = Defaults.insert(Defaults.end());
+      P = &*Defaults.insert(Defaults.end(),PkgPin());
    else
    {
       // Get a spot to put the pin
+      pkgCache::PkgIterator Pkg = Cache->FindPkg(Name);
       if (Pkg.end() == true)
       {
         // Check the unmatched table
         for (vector<PkgPin>::iterator I = Unmatched.begin(); 
              I != Unmatched.end() && P == 0; I++)
            if (I->Pkg == Name)
-              P = I;
+              P = &*I;
         
         if (P == 0)
-           P = Unmatched.insert(Unmatched.end());      
+           P = &*Unmatched.insert(Unmatched.end(),PkgPin());      
       }
       else
       {
@@ -213,6 +211,36 @@ void pkgPolicy::CreatePin(pkgVersionMatch::MatchType Type,string Name,
    P->Data = Data;
 }
                                                                        /*}}}*/
+// Policy::GetMatch - Get the matching version for a package pin       /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+pkgCache::VerIterator pkgPolicy::GetMatch(pkgCache::PkgIterator Pkg)
+{
+   const Pin &PPkg = Pins[Pkg->ID];
+   if (PPkg.Type != pkgVersionMatch::None)
+   {
+      pkgVersionMatch Match(PPkg.Data,PPkg.Type);
+      return Match.Find(Pkg);
+   }
+   return pkgCache::VerIterator(*Pkg.Cache());
+}
+                                                                       /*}}}*/
+// Policy::GetPriority - Get the priority of the package pin           /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+signed short pkgPolicy::GetPriority(pkgCache::PkgIterator const &Pkg)
+{
+   if (Pins[Pkg->ID].Type != pkgVersionMatch::None)
+   {
+      // In this case 0 means default priority
+      if (Pins[Pkg->ID].Priority == 0)
+        return 989;
+      return Pins[Pkg->ID].Priority;
+   }
+   
+   return 0;
+}
+                                                                       /*}}}*/
 
 // ReadPinFile - Load the pin file into a Policy                       /*{{{*/
 // ---------------------------------------------------------------------
@@ -265,8 +293,14 @@ bool ReadPinFile(pkgPolicy &Plcy,string File)
       }
       for (; Word != End && isspace(*Word) != 0; Word++);
 
-      Plcy.CreatePin(Type,Name,string(Word,End),
-                    Tags.FindI("Pin-Priority"));
+      short int priority = Tags.FindI("Pin-Priority", 0);
+      if (priority == 0)
+      {
+         _error->Warning(_("No priority (or zero) specified for pin"));
+         continue;
+      }
+
+      Plcy.CreatePin(Type,Name,string(Word,End),priority);
    }
 
    Plcy.InitDefaults();