revised the debdelta method

1 files changed, 45 insertions, 50 deletions

diff --git a/methods/debdelta.cc b/methods/debdelta.cc
index 81d9ed888..6c78c3990 100644
--- a/methods/debdelta.cc
+++ b/methods/debdelta.cc
@@ -21,36 +21,38 @@
 /** \brief DebdeltaMethod - TODO: say something about debdelta here!
  * */
 class DebdeltaMethod : public pkgAcqMethod {
-   bool Debug;  
-
+   bool Debug;
+   string NewPackageName;
+   string DebdeltaFile;
+   string FromFile;
+   string ToFile;
 protected:
    // the main(i.e. most important) method of the debdelta method.
    virtual bool Fetch(FetchItem *Itm);
 public:
    DebdeltaMethod() : pkgAcqMethod("1.1", SingleInstance | SendConfig) {};
-   string GetNewPackageName(string debdeltaName);
+   void MakeToFile();
 };
 
 bool DebdeltaMethod::Fetch(FetchItem *Itm)						/*{{{*/
 {
    /// Testing only...
-   FetchResult ResTest;
-   ResTest.Filename = "/home/ishan/devel/apt/testrepo/binary/gcc-4.6-base_4.6.0-7_amd64.deb";
-   URIDone(ResTest);
-   return true; 
+   //FetchResult ResTest;
+   //ResTest.Filename = "/home/ishan/devel/apt/testrepo/binary/gcc-4.6-base_4.6.0-7_amd64.deb";
+   //URIDone(ResTest);
+   //return true; 
    ///
-   Debug = _config->FindB("Debug::pkgAcquire::RRed", false);
+   Debug = _config->FindB("Debug::pkgAcquire::Debdelta", false);
+   FromFile = Itm->DestFile;
    URI U(Itm->Uri);
-   string OldDebFile = Itm->DestFile;
-   string DebDeltaFile = U.Path;
-   FetchResult Res;
-   if (flExtension(OldDebFile) != ".deb" || !FileExists(OldDebFile))
-      OldDebFile = "/";
-   if (!FileExists(DebDeltaFile))
+   DebdeltaFile = U.Path;
+   
+   if (flExtension(FromFile) != "deb" || !FileExists(FromFile))
+      FromFile = "/";
+   if (!FileExists(DebdeltaFile))
       return _error->Error("[Debdelta] Could not find a debdelta file.");
-   string NewDeb = GetNewPackageName(DebDeltaFile);
-   Itm->DestFile = _config->FindDir("Dir::Cache::Archives") + "partial/" + NewDeb;
-   if (FileExists(Itm->DestFile))
+   MakeToFile();
+   if (FileExists(ToFile))
       return _error->Error("[Debdelta] New .deb already exists.");
    
    pid_t Process = ExecFork();      
@@ -61,16 +63,16 @@ bool DebdeltaMethod::Fetch(FetchItem *Itm)						/*{{{*/
       if (!FileExists(Args[0]))
 	 return _error->Error("[Debdelta] Could not find debpatch.");
       Args[1] = "-A";
-      Args[2] = DebDeltaFile.c_str();
-      Args[3] = OldDebFile.c_str();
-      Args[4] = Itm->DestFile.c_str();
+      Args[2] = DebdeltaFile.c_str();
+      Args[3] = FromFile.c_str();
+      Args[4] = ToFile.c_str();
       if (Debug == true)
       {
 	 std::cerr << "[Debdelta] Command:" << std::endl;
-	 std::cerr << Args[0] << " " << Args[1] << " " << Args[2] << " "
-		   << Args[3] << " " << Args[4] << std::endl;
+	 std::cerr << Args[0] << " " << Args[1] << " " << Args[2] << " " << Args[3] << " "
+                   << Args[4] << std::endl;
       }
-      std::cerr << "[Debdelta] Patching " << NewDeb << "..." << std::endl;
+      std::cerr << "[Debdelta] Patching " << ToFile << "..." << std::endl;
       execv(Args[0], (char **)Args);
    }
    if (ExecWait(Process, "debpatch"))
@@ -78,36 +80,33 @@ bool DebdeltaMethod::Fetch(FetchItem *Itm)						/*{{{*/
       if (!FileExists(Itm->DestFile))
 	 return _error->Error("[Debdelta] Failed to patch %s", Itm->DestFile.c_str());
       // move the .deb to Dir::Cache::Archives
-      OldDebFile = _config->FindDir("Dir::Cache::Archives") + NewDeb;
-      Rename(Itm->DestFile, OldDebFile);
-      Itm->DestFile = OldDebFile;
-      Res.Filename = Itm->DestFile;
-      URIDone(Res);
+      string FinalFile = _config->FindDir("Dir::Cache::Archives") + flNotDir(ToFile);
+      Rename(ToFile, FinalFile);
+      ToFile = FinalFile;
+      FetchResult Res;
+      Res.Filename = ToFile;
+      if (Queue != 0)
+	 URIDone(Res);
+      else
+	 std::cout << "Filename: " << Res.Filename << std::endl;
       return true;
    }
-   Itm->DestFile = OldDebFile;
-   
    return false;
 }
 
-/**
- * \brief Receives a debdelta file name in the form of path/P_O_N_A.debdelta and constructs the name
- * of the deb with the newer version.
- * @param debdeltaName the name of the debdelta file.
- * @return path/P_N_A.deb
- */
-string DebdeltaMethod::GetNewPackageName(string DebdeltaName)
+
+void DebdeltaMethod::MakeToFile()
 {
-   int Slashpos = DebdeltaName.rfind("/", DebdeltaName.length() - 1);
-   string Path = DebdeltaName.substr(0, Slashpos + 1);
-   DebdeltaName = DebdeltaName.substr(Slashpos + 1, DebdeltaName.length() - 1);
+   int Slashpos = DebdeltaFile.rfind("/", DebdeltaFile.length() - 1);
+   string DebdeltaName = DebdeltaFile.substr(Slashpos + 1, DebdeltaFile.length() - 1);
    int NewBegin = DebdeltaName.find("_", 0);
    string PkgName = DebdeltaName.substr(0, NewBegin); 
    NewBegin = DebdeltaName.find("_", NewBegin + 1);
    int NewEnd = DebdeltaName.find("_", NewBegin + 1);
    string NewVersion = DebdeltaName.substr(NewBegin + 1, NewEnd - NewBegin - 1);
    string Arch = DebdeltaName.substr(NewEnd + 1, DebdeltaName.find(".", NewEnd + 1) - NewEnd - 1);
-   return PkgName + "_" + NewVersion + "_" + Arch + ".deb";
+   ToFile = _config->FindDir("Dir::Cache::Archives") + "partial/" 
+      + PkgName + "_" + NewVersion + "_" + Arch + ".deb";
 }
 
 /*}}}*/
@@ -121,7 +120,7 @@ public:
     *
     *  \param base basename of all files involved in this debdelta test
     */
-   bool Run(char const *debFile, char const *debdeltaFile)
+   bool Run(char const *DebdeltaFile, char const *FromFile)
    {
       if (pkgInitConfig(*_config) == false ||
           pkgInitSystem(*_config,_system) == false)
@@ -132,17 +131,13 @@ public:
       }
       _config->CndSet("Debug::pkgAcquire::Debdetla", "true");
       FetchItem *test = new FetchItem;
-      test->DestFile = debFile;
-      test->Uri = debdeltaFile;
+      test->DestFile = FromFile;
+      test->Uri = "debdelta://" + string(DebdeltaFile);
       test->FailIgnore = false;
       test->IndexFile = false;
       test->Next = 0;
-      if (Fetch(test))
-      {
-	 std::cout << "Result-Deb: " << test->DestFile << std::endl;
-	 return true;
-      }
-      return false;   
+     
+      return Fetch(test);  
    }
 };