From d59671c9eef322c10abba22b0257fef37979dfd4 Mon Sep 17 00:00:00 2001
From: David Kalnischkies <david@kalnischkies.de>
Date: Sun, 5 Jun 2016 13:05:30 +0200
Subject: refactor EDSP classes for better internal reuse

The classes are all marked as hidden, so changing them is no problem ABI
wise and will help with introducing protocols similar to EDSP.
The change has no observeable behavior difference, its just code
juggling.

Git-Dch: Ignore
---
 apt-pkg/edsp/edspsystem.cc | 126 +++++++++++++++++++--------------------------
 1 file changed, 53 insertions(+), 73 deletions(-)

(limited to 'apt-pkg/edsp/edspsystem.cc')

diff --git a/apt-pkg/edsp/edspsystem.cc b/apt-pkg/edsp/edspsystem.cc
index 0d967863e..c3eea6f10 100644
--- a/apt-pkg/edsp/edspsystem.cc
+++ b/apt-pkg/edsp/edspsystem.cc
@@ -28,63 +28,22 @@
 
 									/*}}}*/
 
-class edspSystemPrivate {
-   std::string tempDir;
-   std::string tempStatesFile;
-   std::string tempPrefsFile;
-
-public:
-   edspSystemPrivate() {}
-
-   void Initialize(Configuration &Cnf)
-   {
-      DeInitialize();
-      Cnf.Set("Dir::State::extended_states", "/dev/null");
-      Cnf.Set("Dir::Etc::preferences", "/dev/null");
-      std::string const tmp = GetTempDir();
-      char tmpname[100];
-      snprintf(tmpname, sizeof(tmpname), "%s/apt-edsp-solver-XXXXXX", tmp.c_str());
-      if (NULL == mkdtemp(tmpname))
-	 return;
-      tempDir = tmpname;
-      tempStatesFile = flCombine(tempDir, "extended_states");
-      Cnf.Set("Dir::State::extended_states", tempStatesFile);
-      tempPrefsFile = flCombine(tempDir, "apt_preferences");
-      Cnf.Set("Dir::Etc::preferences", tempPrefsFile);
-   }
-
-   void DeInitialize()
-   {
-      if (tempDir.empty())
-	 return;
-
-      RemoveFile("DeInitialize", tempStatesFile);
-      RemoveFile("DeInitialize", tempPrefsFile);
-      rmdir(tempDir.c_str());
-   }
-
-   ~edspSystemPrivate() { DeInitialize(); }
-};
-// System::edspSystem - Constructor					/*{{{*/
-edspSystem::edspSystem() : pkgSystem("Debian APT solver interface", &debVS), d(new edspSystemPrivate()), StatusFile(NULL)
+// System::System - Constructor						/*{{{*/
+edspLikeSystem::edspLikeSystem(char const * const Label) : pkgSystem(Label, &debVS)
 {
 }
-									/*}}}*/
-// System::~debSystem - Destructor					/*{{{*/
-edspSystem::~edspSystem()
+edspSystem::edspSystem() : edspLikeSystem("Debian APT solver interface")
 {
-   delete StatusFile;
-   delete d;
 }
 									/*}}}*/
 // System::Lock - Get the lock						/*{{{*/
-bool edspSystem::Lock()
+bool edspLikeSystem::Lock()
 {
    return true;
 }
 									/*}}}*/
 // System::UnLock - Drop a lock						/*{{{*/
-bool edspSystem::UnLock(bool /*NoErrors*/)
+bool edspLikeSystem::UnLock(bool /*NoErrors*/)
 {
    return true;
 }
@@ -93,68 +52,89 @@ bool edspSystem::UnLock(bool /*NoErrors*/)
 // ---------------------------------------------------------------------
 /* we can't use edsp input as input for real installations - just a
    simulation can work, but everything else will fail bigtime */
-pkgPackageManager *edspSystem::CreatePM(pkgDepCache * /*Cache*/) const
+pkgPackageManager *edspLikeSystem::CreatePM(pkgDepCache * /*Cache*/) const
 {
-   return NULL;
+   return nullptr;
 }
 									/*}}}*/
 // System::Initialize - Setup the configuration space..			/*{{{*/
-bool edspSystem::Initialize(Configuration &Cnf)
+bool edspLikeSystem::Initialize(Configuration &Cnf)
 {
-   d->Initialize(Cnf);
    Cnf.Set("Dir::Etc::preferencesparts", "/dev/null");
    Cnf.Set("Dir::State::status","/dev/null");
    Cnf.Set("Dir::State::lists","/dev/null");
-
    Cnf.Set("Debug::NoLocking", "true");
    Cnf.Set("APT::Get::Simulate", "true");
-
-   if (StatusFile) {
-     delete StatusFile;
-     StatusFile = 0;
-   }
+   StatusFile.reset(nullptr);
+   return true;
+}
+bool edspSystem::Initialize(Configuration &Cnf)
+{
+   if (edspLikeSystem::Initialize(Cnf) == false)
+      return false;
+   std::string const tmp = GetTempDir();
+   char tmpname[300];
+   snprintf(tmpname, sizeof(tmpname), "%s/apt-edsp-solver-XXXXXX", tmp.c_str());
+   if (nullptr == mkdtemp(tmpname))
+      return false;
+   tempDir = tmpname;
+   tempStatesFile = flCombine(tempDir, "extended_states");
+   Cnf.Set("Dir::State::extended_states", tempStatesFile);
+   tempPrefsFile = flCombine(tempDir, "apt_preferences");
+   Cnf.Set("Dir::Etc::preferences", tempPrefsFile);
    return true;
 }
 									/*}}}*/
 // System::ArchiveSupported - Is a file format supported		/*{{{*/
-bool edspSystem::ArchiveSupported(const char * /*Type*/)
+bool edspLikeSystem::ArchiveSupported(const char * /*Type*/)
 {
    return false;
 }
 									/*}}}*/
 // System::Score - Never use the EDSP system automatically		/*{{{*/
-signed edspSystem::Score(Configuration const &)
+signed edspLikeSystem::Score(Configuration const &)
 {
    return -1000;
 }
 									/*}}}*/
-bool edspSystem::AddStatusFiles(std::vector<pkgIndexFile *> &List)	/*{{{*/
-{
-   if (StatusFile == 0)
-   {
-      if (_config->Find("edsp::scenario", "") == "/nonexistent/stdin")
-	 StatusFile = new edspIndex("/nonexistent/stdin");
-      else
-	 StatusFile = new edspIndex(_config->FindFile("edsp::scenario"));
-   }
-   List.push_back(StatusFile);
-   return true;
-}
-									/*}}}*/
 // System::FindIndex - Get an index file for status files		/*{{{*/
-bool edspSystem::FindIndex(pkgCache::PkgFileIterator File,
+bool edspLikeSystem::FindIndex(pkgCache::PkgFileIterator File,
 			  pkgIndexFile *&Found) const
 {
    if (StatusFile == 0)
       return false;
    if (StatusFile->FindInCache(*File.Cache()) == File)
    {
-      Found = StatusFile;
+      Found = StatusFile.get();
       return true;
    }
 
    return false;
 }
 									/*}}}*/
+bool edspSystem::AddStatusFiles(std::vector<pkgIndexFile *> &List)	/*{{{*/
+{
+   if (StatusFile == nullptr)
+   {
+      if (_config->Find("edsp::scenario", "") == "/nonexistent/stdin")
+	 StatusFile.reset(new edspIndex("/nonexistent/stdin"));
+      else
+	 StatusFile.reset(new edspIndex(_config->FindFile("edsp::scenario")));
+   }
+   List.push_back(StatusFile.get());
+   return true;
+}
+									/*}}}*/
+
+edspLikeSystem::~edspLikeSystem() {}
+edspSystem::~edspSystem()
+{
+   if (tempDir.empty())
+      return;
+
+   RemoveFile("~edspSystem", tempStatesFile);
+   RemoveFile("~edspSystem", tempPrefsFile);
+   rmdir(tempDir.c_str());
+}
 
 APT_HIDDEN edspSystem edspSys;
-- 
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