make the TotalFiles more reliable in apt-get update

apt-pkg/acquire-item.cc

@@ -55,7 +55,8 @@ using namespace std;
 /* */
 pkgAcquire::Item::Item(pkgAcquire *Owner) : Owner(Owner), FileSize(0),
                        PartialSize(0), Mode(0), ID(0), Complete(false), 
-                       Local(false), QueueCounter(0)
+                       Local(false), QueueCounter(0), 
+                       ExpectedAdditionalItems(0)
 {
    Owner->Add(this);
    Status = StatIdle;
@@ -1257,6 +1258,9 @@ pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner,				/*{{{*/
       Rename(Final,LastGoodSig);
    }
 
+   // we expect the indextargets + one additional Release file
+   ExpectedAdditionalItems = IndexTargets->size() + 1;
+
    QueueURI(Desc);
 }
 									/*}}}*/
@@ -1309,6 +1313,9 @@ void pkgAcqMetaSig::Done(string Message,unsigned long long Size,string MD5,
 
    Complete = true;
 
+   // at this point pkgAcqMetaIndex takes over
+   ExpectedAdditionalItems = 0;
+
    // put the last known good file back on i-m-s hit (it will
    // be re-verified again)
    // Else do nothing, we have the new file in DestFile then
@@ -1326,6 +1333,9 @@ void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf)/*{{{*/
 {
    string Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI);
 
+   // at this point pkgAcqMetaIndex takes over
+   ExpectedAdditionalItems = 0;
+
    // if we get a network error we fail gracefully
    if(Status == StatTransientNetworkError)
    {
@@ -1376,6 +1386,9 @@ pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner,			/*{{{*/
    Desc.ShortDesc = ShortDesc;
    Desc.URI = URI;
 
+   // we expect more item
+   ExpectedAdditionalItems = IndexTargets->size();
+
    QueueURI(Desc);
 }
 									/*}}}*/
@@ -1554,6 +1567,9 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify)				/*{{{*/
 	 }
    }
 
+   // at this point the real Items are loaded in the fetcher
+   ExpectedAdditionalItems = 0;
+
    for (vector <struct IndexTarget*>::const_iterator Target = IndexTargets->begin();
         Target != IndexTargets->end();
         ++Target)
@@ -1784,6 +1800,10 @@ pkgAcqMetaClearSig::pkgAcqMetaClearSig(pkgAcquire *Owner,		/*{{{*/
 {
    SigFile = DestFile;
 
+   // index targets + (worst case:) Release/Release.gpg
+   ExpectedAdditionalItems = IndexTargets->size() + 2;
+
+
    // keep the old InRelease around in case of transistent network errors
    string const Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI);
    if (RealFileExists(Final) == true)
@@ -1826,6 +1846,9 @@ string pkgAcqMetaClearSig::Custom600Headers()
 									/*}}}*/
 void pkgAcqMetaClearSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf) /*{{{*/
 {
+   // we failed, we will not get additional items from this method
+   ExpectedAdditionalItems = 0;
+
    if (AuthPass == false)
    {
       // Remove the 'old' InRelease file if we try Release.gpg now as otherwise

apt-pkg/acquire-item.h

@@ -166,6 +166,16 @@ class pkgAcquire::Item : public WeakPointable
     *  \sa pkgAcquire
     */
    unsigned int QueueCounter;
+
+   /** \brief The number of additional fetch items that are expected
+    *  once this item is done.
+    *
+    *  Some items like pkgAcqMeta{Index,Sig} will queue additional
+    *  items. This variable can be set by the methods if it knows
+    *  in advance how many items to expect to get a more accurate
+    *  progress.
+    */
+   unsigned int ExpectedAdditionalItems;
    
    /** \brief The name of the file into which the retrieved object
     *  will be written.

apt-pkg/acquire.cc

@@ -832,6 +832,9 @@ bool pkgAcquireStatus::Pulse(pkgAcquire *Owner)
       if ((*I)->Local == true)
 	 continue;
 
+      // see if the method tells us to expect more
+      TotalItems += (*I)->ExpectedAdditionalItems;
+
       TotalBytes += (*I)->FileSize;
       if ((*I)->Complete == true)
 	 CurrentBytes += (*I)->FileSize;
@@ -901,12 +904,17 @@ bool pkgAcquireStatus::Pulse(pkgAcquire *Owner)
 	 snprintf(msg,sizeof(msg), _("Retrieving file %li of %li"), i, TotalItems);
 	 
 
-
+      // calculate the percentage, if we have too little data assume 0%
+      int Percent;
+      if (TotalBytes < 1*1024)
+         Percent = 0;
+      else
+         Percent = (CurrentBytes/float(TotalBytes)*100.0);
       // build the status str
       status << "dlstatus:" << i
-	     << ":"  << (CurrentBytes/float(TotalBytes)*100.0) 
-	     << ":" << msg 
-	     << endl;
+             << ":"  << Percent
+             << ":" << msg 
+             << endl;
 
       std::string const dlstatus = status.str();
       FileFd::Write(fd, dlstatus.c_str(), dlstatus.size());