Merge remote-tracking branch 'mvo/feature/apt-binary2' into debian/sid

Conflicts:
	cmdline/apt-get.cc

1 files changed, 753 insertions, 0 deletions

diff --git a/apt-private/private-output.cc b/apt-private/private-output.cc
new file mode 100644
index 000000000..659975476
--- /dev/null
+++ b/apt-private/private-output.cc
@@ -0,0 +1,753 @@
+// Include files							/*{{{*/
+#include<config.h>
+
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/cachefile.h>
+#include <apt-pkg/pkgrecords.h>
+#include <apt-pkg/policy.h>
+
+#include <iomanip>
+#include <iostream>
+#include <locale.h>
+#include <langinfo.h>
+#include <unistd.h>
+
+#include "private-output.h"
+#include "private-cachefile.h"
+
+#include <apti18n.h>
+									/*}}}*/
+
+using namespace std;
+
+std::ostream c0out(0);
+std::ostream c1out(0);
+std::ostream c2out(0);
+std::ofstream devnull("/dev/null");
+unsigned int ScreenWidth = 80 - 1; /* - 1 for the cursor */
+
+
+bool InitOutput()
+{
+   c0out.rdbuf(cout.rdbuf());
+   c1out.rdbuf(cout.rdbuf());
+   c2out.rdbuf(cout.rdbuf());
+   if (_config->FindI("quiet",0) > 0)
+      c0out.rdbuf(devnull.rdbuf());
+   if (_config->FindI("quiet",0) > 1)
+      c1out.rdbuf(devnull.rdbuf());
+
+   if(!isatty(1))
+   {
+      _config->Set("APT::Color", "false");
+      _config->Set("APT::Color::Highlight", "");
+      _config->Set("APT::Color::Neutral", "");
+   } else {
+      // Colors
+      _config->CndSet("APT::Color::Highlight", "\x1B[32m");
+      _config->CndSet("APT::Color::Neutral", "\x1B[0m");
+      
+      _config->CndSet("APT::Color::Red", "\x1B[31m");
+      _config->CndSet("APT::Color::Green", "\x1B[32m");
+      _config->CndSet("APT::Color::Yellow", "\x1B[33m");
+      _config->CndSet("APT::Color::Blue", "\x1B[34m");
+      _config->CndSet("APT::Color::Magenta", "\x1B[35m");
+      _config->CndSet("APT::Color::Cyan", "\x1B[36m");
+      _config->CndSet("APT::Color::White", "\x1B[37m");
+   }
+
+   return true;
+}
+
+std::string GetArchiveSuite(pkgCacheFile &CacheFile, pkgCache::VerIterator ver)
+{
+   std::string suite = "";
+   if (ver && ver.FileList() && ver.FileList())
+   {
+      pkgCache::VerFileIterator VF = ver.FileList();
+      for (; VF.end() == false ; ++VF)
+      {
+         // XXX: how to figure out the relevant suite? if its in multiple ones?
+         suite = suite + "," + VF.File().Archive();
+         //suite = VF.File().Archive();
+      }
+      suite = suite.erase(0, 1);
+   }
+   return suite;
+}
+
+std::string GetFlagsStr(pkgCacheFile &CacheFile, pkgCache::PkgIterator P)
+{
+   pkgDepCache *DepCache = CacheFile.GetDepCache();
+   pkgDepCache::StateCache &state = (*DepCache)[P];
+
+   std::string flags_str;
+   if (state.NowBroken())
+      flags_str = "B";
+   if (P.CurrentVer() && state.Upgradable())
+      flags_str = "g";
+   else if (P.CurrentVer() != NULL)
+      flags_str = "i";
+   else
+      flags_str = "-";
+   return flags_str;
+}
+
+std::string GetCandidateVersion(pkgCacheFile &CacheFile, pkgCache::PkgIterator P)
+{
+   pkgPolicy *policy = CacheFile.GetPolicy();
+   pkgCache::VerIterator cand = policy->GetCandidateVer(P);
+
+   return cand ? cand.VerStr() : "(none)";
+}
+
+std::string GetInstalledVersion(pkgCacheFile &CacheFile, pkgCache::PkgIterator P)
+{
+   pkgCache::VerIterator inst = P.CurrentVer();
+
+   return inst ? inst.VerStr() : "(none)";
+}
+
+std::string GetVersion(pkgCacheFile &CacheFile, pkgCache::VerIterator V)
+{
+   pkgCache::PkgIterator P = V.ParentPkg();
+   if (V == P.CurrentVer())
+   {
+      pkgDepCache *DepCache = CacheFile.GetDepCache();
+      pkgDepCache::StateCache &state = (*DepCache)[P];
+      std::string inst_str = DeNull(V.VerStr());
+      if (state.Upgradable())
+         return "**"+inst_str;
+      return inst_str;
+   }
+
+   if(V)
+      return DeNull(V.VerStr());
+   return "(none)";
+}
+
+std::string GetArchitecture(pkgCacheFile &CacheFile, pkgCache::PkgIterator P)
+{
+   pkgPolicy *policy = CacheFile.GetPolicy();
+   pkgCache::VerIterator inst = P.CurrentVer();
+   pkgCache::VerIterator cand = policy->GetCandidateVer(P);
+   
+   return inst ? inst.Arch() : cand.Arch();
+}
+
+std::string GetShortDescription(pkgCacheFile &CacheFile, pkgRecords &records, pkgCache::PkgIterator P)
+{
+   pkgPolicy *policy = CacheFile.GetPolicy();
+
+   pkgCache::VerIterator ver;
+   if (P.CurrentVer())
+      ver = P.CurrentVer();
+   else
+      ver = policy->GetCandidateVer(P);
+
+   std::string ShortDescription = "(none)";
+   if(ver)
+   {
+      pkgCache::DescIterator Desc = ver.TranslatedDescription();
+      pkgRecords::Parser & parser = records.Lookup(Desc.FileList());
+
+      ShortDescription = parser.ShortDesc();
+   }
+   return ShortDescription;
+}
+
+void ListSingleVersion(pkgCacheFile &CacheFile, pkgRecords &records, 
+                       pkgCache::VerIterator V, std::ostream &out)
+{
+   pkgCache::PkgIterator P = V.ParentPkg();
+
+   pkgDepCache *DepCache = CacheFile.GetDepCache();
+   pkgDepCache::StateCache &state = (*DepCache)[P];
+
+   std::string suite = GetArchiveSuite(CacheFile, V);
+   std::string name_str = P.Name();
+
+   if (_config->FindB("APT::Cmd::use-format", false))
+   {
+      std::string format = _config->Find("APT::Cmd::format", "${db::Status-Abbrev} ${Package} ${Version} ${Origin} ${Description}");
+      std::string output = format;
+   
+      output = SubstVar(output, "${db::Status-Abbrev}", GetFlagsStr(CacheFile, P));
+      output = SubstVar(output, "${Package}", name_str);
+      output = SubstVar(output, "${installed:Version}", GetInstalledVersion(CacheFile, P));
+      output = SubstVar(output, "${candidate:Version}", GetCandidateVersion(CacheFile, P));
+      output = SubstVar(output, "${Version}", GetVersion(CacheFile, V));
+      output = SubstVar(output, "${Description}", GetShortDescription(CacheFile, records, P));
+      output = SubstVar(output, "${Origin}", GetArchiveSuite(CacheFile, V));
+      out << output << std::endl;
+   } else {
+      // raring/linux-kernel version [upradable: new-version]
+      //    description
+      pkgPolicy *policy = CacheFile.GetPolicy();
+      out << std::setiosflags(std::ios::left)
+          << _config->Find("APT::Color::Highlight", "")
+          << name_str 
+          << _config->Find("APT::Color::Neutral", "")
+          << "/" << suite
+          << " ";
+      if(P.CurrentVer() == V && state.Upgradable()) {
+         out << GetVersion(CacheFile, V)
+             << " "
+             << "[" << _("installed,upgradable to: ")
+             << GetCandidateVersion(CacheFile, P) << "]";
+      } else if (P.CurrentVer() == V) {
+         out << GetVersion(CacheFile, V)
+             << " ";
+         if(!V.Downloadable())
+            out << _("[installed,local]");
+         else
+            if(V.Automatic() && state.Garbage)
+                  out << _("[installed,auto-removable]");
+            else if (state.Flags & pkgCache::Flag::Auto)
+               out << _("[installed,automatic]");
+            else
+               out << _("[installed]");
+      } else if (P.CurrentVer() && 
+                 policy->GetCandidateVer(P) == V && 
+                 state.Upgradable()) {
+         out << GetVersion(CacheFile, V)
+             << " "
+             << _("[upgradable from: ")
+             << GetInstalledVersion(CacheFile, P) << "]";
+      } else {
+         if (V.ParentPkg()->CurrentState == pkgCache::State::ConfigFiles)
+            out << GetVersion(CacheFile, V) 
+                << " "
+                << _("[residual-config]");
+         else
+            out << GetVersion(CacheFile, V);
+      }
+      out << " " << GetArchitecture(CacheFile, P) << " ";
+      out << std::endl 
+                << "    " << GetShortDescription(CacheFile, records, P)
+                << std::endl;
+   }
+}
+
+
+// ShowList - Show a list						/*{{{*/
+// ---------------------------------------------------------------------
+/* This prints out a string of space separated words with a title and 
+   a two space indent line wraped to the current screen width. */
+bool ShowList(ostream &out,string Title,string List,string VersionsList)
+{
+   if (List.empty() == true)
+      return true;
+   // trim trailing space
+   int NonSpace = List.find_last_not_of(' ');
+   if (NonSpace != -1)
+   {
+      List = List.erase(NonSpace + 1);
+      if (List.empty() == true)
+	 return true;
+   }
+
+   // Acount for the leading space
+   int ScreenWidth = ::ScreenWidth - 3;
+      
+   out << Title << endl;
+   string::size_type Start = 0;
+   string::size_type VersionsStart = 0;
+   while (Start < List.size())
+   {
+      if(_config->FindB("APT::Get::Show-Versions",false) == true &&
+         VersionsList.size() > 0) {
+         string::size_type End;
+         string::size_type VersionsEnd;
+         
+         End = List.find(' ',Start);
+         VersionsEnd = VersionsList.find('\n', VersionsStart);
+
+         out << "   " << string(List,Start,End - Start) << " (" << 
+            string(VersionsList,VersionsStart,VersionsEnd - VersionsStart) << 
+            ")" << endl;
+
+	 if (End == string::npos || End < Start)
+	    End = Start + ScreenWidth;
+
+         Start = End + 1;
+         VersionsStart = VersionsEnd + 1;
+      } else {
+         string::size_type End;
+
+         if (Start + ScreenWidth >= List.size())
+            End = List.size();
+         else
+            End = List.rfind(' ',Start+ScreenWidth);
+
+         if (End == string::npos || End < Start)
+            End = Start + ScreenWidth;
+         out << "  " << string(List,Start,End - Start) << endl;
+         Start = End + 1;
+      }
+   }   
+
+   return false;
+}
+									/*}}}*/
+// ShowBroken - Debugging aide						/*{{{*/
+// ---------------------------------------------------------------------
+/* This prints out the names of all the packages that are broken along
+   with the name of each each broken dependency and a quite version 
+   description.
+   
+   The output looks like:
+ The following packages have unmet dependencies:
+     exim: Depends: libc6 (>= 2.1.94) but 2.1.3-10 is to be installed
+           Depends: libldap2 (>= 2.0.2-2) but it is not going to be installed
+           Depends: libsasl7 but it is not going to be installed   
+ */
+void ShowBroken(ostream &out,CacheFile &Cache,bool Now)
+{
+   if (Cache->BrokenCount() == 0)
+      return;
+
+   out << _("The following packages have unmet dependencies:") << endl;
+   for (unsigned J = 0; J < Cache->Head().PackageCount; J++)
+   {
+      pkgCache::PkgIterator I(Cache,Cache.List[J]);
+      
+      if (Now == true)
+      {
+	 if (Cache[I].NowBroken() == false)
+	    continue;
+      }
+      else
+      {
+	 if (Cache[I].InstBroken() == false)
+	    continue;
+      }
+      
+      // Print out each package and the failed dependencies
+      out << " " << I.FullName(true) << " :";
+      unsigned const Indent = I.FullName(true).size() + 3;
+      bool First = true;
+      pkgCache::VerIterator Ver;
+      
+      if (Now == true)
+	 Ver = I.CurrentVer();
+      else
+	 Ver = Cache[I].InstVerIter(Cache);
+      
+      if (Ver.end() == true)
+      {
+	 out << endl;
+	 continue;
+      }
+      
+      for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false;)
+      {
+	 // Compute a single dependency element (glob or)
+	 pkgCache::DepIterator Start;
+	 pkgCache::DepIterator End;
+	 D.GlobOr(Start,End); // advances D
+
+	 if (Cache->IsImportantDep(End) == false)
+	    continue;
+	 
+	 if (Now == true)
+	 {
+	    if ((Cache[End] & pkgDepCache::DepGNow) == pkgDepCache::DepGNow)
+	       continue;
+	 }
+	 else
+	 {
+	    if ((Cache[End] & pkgDepCache::DepGInstall) == pkgDepCache::DepGInstall)
+	       continue;
+	 }
+	 
+	 bool FirstOr = true;
+	 while (1)
+	 {
+	    if (First == false)
+	       for (unsigned J = 0; J != Indent; J++)
+		  out << ' ';
+	    First = false;
+
+	    if (FirstOr == false)
+	    {
+	       for (unsigned J = 0; J != strlen(End.DepType()) + 3; J++)
+		  out << ' ';
+	    }
+	    else
+	       out << ' ' << End.DepType() << ": ";
+	    FirstOr = false;
+	    
+	    out << Start.TargetPkg().FullName(true);
+	 
+	    // Show a quick summary of the version requirements
+	    if (Start.TargetVer() != 0)
+	       out << " (" << Start.CompType() << " " << Start.TargetVer() << ")";
+	    
+	    /* Show a summary of the target package if possible. In the case
+	       of virtual packages we show nothing */	 
+	    pkgCache::PkgIterator Targ = Start.TargetPkg();
+	    if (Targ->ProvidesList == 0)
+	    {
+	       out << ' ';
+	       pkgCache::VerIterator Ver = Cache[Targ].InstVerIter(Cache);
+	       if (Now == true)
+		  Ver = Targ.CurrentVer();
+	       	    
+	       if (Ver.end() == false)
+	       {
+		  if (Now == true)
+		     ioprintf(out,_("but %s is installed"),Ver.VerStr());
+		  else
+		     ioprintf(out,_("but %s is to be installed"),Ver.VerStr());
+	       }	       
+	       else
+	       {
+		  if (Cache[Targ].CandidateVerIter(Cache).end() == true)
+		  {
+		     if (Targ->ProvidesList == 0)
+			out << _("but it is not installable");
+		     else
+			out << _("but it is a virtual package");
+		  }		  
+		  else
+		     out << (Now?_("but it is not installed"):_("but it is not going to be installed"));
+	       }	       
+	    }
+	    
+	    if (Start != End)
+	       out << _(" or");
+	    out << endl;
+	    
+	    if (Start == End)
+	       break;
+	    ++Start;
+	 }	 
+      }	    
+   }   
+}
+									/*}}}*/
+// ShowNew - Show packages to newly install				/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void ShowNew(ostream &out,CacheFile &Cache)
+{
+   /* Print out a list of packages that are going to be installed extra
+      to what the user asked */
+   string List;
+   string VersionsList;
+   for (unsigned J = 0; J < Cache->Head().PackageCount; J++)
+   {
+      pkgCache::PkgIterator I(Cache,Cache.List[J]);
+      if (Cache[I].NewInstall() == true) {
+         List += I.FullName(true) + " ";
+         VersionsList += string(Cache[I].CandVersion) + "\n";
+      }
+   }
+   
+   ShowList(out,_("The following NEW packages will be installed:"),List,VersionsList);
+}
+									/*}}}*/
+// ShowDel - Show packages to delete					/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void ShowDel(ostream &out,CacheFile &Cache)
+{
+   /* Print out a list of packages that are going to be removed extra
+      to what the user asked */
+   string List;
+   string VersionsList;
+   for (unsigned J = 0; J < Cache->Head().PackageCount; J++)
+   {
+      pkgCache::PkgIterator I(Cache,Cache.List[J]);
+      if (Cache[I].Delete() == true)
+      {
+	 if ((Cache[I].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge)
+	    List += I.FullName(true) + "* ";
+	 else
+	    List += I.FullName(true) + " ";
+     
+     VersionsList += string(Cache[I].CandVersion)+ "\n";
+      }
+   }
+   
+   ShowList(out,_("The following packages will be REMOVED:"),List,VersionsList);
+}
+									/*}}}*/
+// ShowKept - Show kept packages					/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void ShowKept(ostream &out,CacheFile &Cache)
+{
+   string List;
+   string VersionsList;
+   for (unsigned J = 0; J < Cache->Head().PackageCount; J++)
+   {	 
+      pkgCache::PkgIterator I(Cache,Cache.List[J]);
+      
+      // Not interesting
+      if (Cache[I].Upgrade() == true || Cache[I].Upgradable() == false ||
+	  I->CurrentVer == 0 || Cache[I].Delete() == true)
+	 continue;
+      
+      List += I.FullName(true) + " ";
+      VersionsList += string(Cache[I].CurVersion) + " => " + Cache[I].CandVersion + "\n";
+   }
+   ShowList(out,_("The following packages have been kept back:"),List,VersionsList);
+}
+									/*}}}*/
+// ShowUpgraded - Show upgraded packages				/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void ShowUpgraded(ostream &out,CacheFile &Cache)
+{
+   string List;
+   string VersionsList;
+   for (unsigned J = 0; J < Cache->Head().PackageCount; J++)
+   {
+      pkgCache::PkgIterator I(Cache,Cache.List[J]);
+      
+      // Not interesting
+      if (Cache[I].Upgrade() == false || Cache[I].NewInstall() == true)
+	 continue;
+
+      List += I.FullName(true) + " ";
+      VersionsList += string(Cache[I].CurVersion) + " => " + Cache[I].CandVersion + "\n";
+   }
+   ShowList(out,_("The following packages will be upgraded:"),List,VersionsList);
+}
+									/*}}}*/
+// ShowDowngraded - Show downgraded packages				/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool ShowDowngraded(ostream &out,CacheFile &Cache)
+{
+   string List;
+   string VersionsList;
+   for (unsigned J = 0; J < Cache->Head().PackageCount; J++)
+   {
+      pkgCache::PkgIterator I(Cache,Cache.List[J]);
+      
+      // Not interesting
+      if (Cache[I].Downgrade() == false || Cache[I].NewInstall() == true)
+	 continue;
+
+      List += I.FullName(true) + " ";
+      VersionsList += string(Cache[I].CurVersion) + " => " + Cache[I].CandVersion + "\n";
+   }
+   return ShowList(out,_("The following packages will be DOWNGRADED:"),List,VersionsList);
+}
+									/*}}}*/
+// ShowHold - Show held but changed packages				/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool ShowHold(ostream &out,CacheFile &Cache)
+{
+   string List;
+   string VersionsList;
+   for (unsigned J = 0; J < Cache->Head().PackageCount; J++)
+   {
+      pkgCache::PkgIterator I(Cache,Cache.List[J]);
+      if (Cache[I].InstallVer != (pkgCache::Version *)I.CurrentVer() &&
+          I->SelectedState == pkgCache::State::Hold) {
+         List += I.FullName(true) + " ";
+		 VersionsList += string(Cache[I].CurVersion) + " => " + Cache[I].CandVersion + "\n";
+      }
+   }
+
+   return ShowList(out,_("The following held packages will be changed:"),List,VersionsList);
+}
+									/*}}}*/
+// ShowEssential - Show an essential package warning			/*{{{*/
+// ---------------------------------------------------------------------
+/* This prints out a warning message that is not to be ignored. It shows
+   all essential packages and their dependents that are to be removed. 
+   It is insanely risky to remove the dependents of an essential package! */
+bool ShowEssential(ostream &out,CacheFile &Cache)
+{
+   string List;
+   string VersionsList;
+   bool *Added = new bool[Cache->Head().PackageCount];
+   for (unsigned int I = 0; I != Cache->Head().PackageCount; I++)
+      Added[I] = false;
+   
+   for (unsigned J = 0; J < Cache->Head().PackageCount; J++)
+   {
+      pkgCache::PkgIterator I(Cache,Cache.List[J]);
+      if ((I->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential &&
+	  (I->Flags & pkgCache::Flag::Important) != pkgCache::Flag::Important)
+	 continue;
+      
+      // The essential package is being removed
+      if (Cache[I].Delete() == true)
+      {
+	 if (Added[I->ID] == false)
+	 {
+	    Added[I->ID] = true;
+	    List += I.FullName(true) + " ";
+        //VersionsList += string(Cache[I].CurVersion) + "\n"; ???
+	 }
+      }
+      else
+	 continue;
+
+      if (I->CurrentVer == 0)
+	 continue;
+
+      // Print out any essential package depenendents that are to be removed
+      for (pkgCache::DepIterator D = I.CurrentVer().DependsList(); D.end() == false; ++D)
+      {
+	 // Skip everything but depends
+	 if (D->Type != pkgCache::Dep::PreDepends &&
+	     D->Type != pkgCache::Dep::Depends)
+	    continue;
+	 
+	 pkgCache::PkgIterator P = D.SmartTargetPkg();
+	 if (Cache[P].Delete() == true)
+	 {
+	    if (Added[P->ID] == true)
+	       continue;
+	    Added[P->ID] = true;
+	    
+	    char S[300];
+	    snprintf(S,sizeof(S),_("%s (due to %s) "),P.FullName(true).c_str(),I.FullName(true).c_str());
+	    List += S;
+        //VersionsList += "\n"; ???
+	 }	 
+      }      
+   }
+   
+   delete [] Added;
+   return ShowList(out,_("WARNING: The following essential packages will be removed.\n"
+			 "This should NOT be done unless you know exactly what you are doing!"),List,VersionsList);
+}
+
+									/*}}}*/
+// Stats - Show some statistics						/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void Stats(ostream &out,pkgDepCache &Dep)
+{
+   unsigned long Upgrade = 0;
+   unsigned long Downgrade = 0;
+   unsigned long Install = 0;
+   unsigned long ReInstall = 0;
+   for (pkgCache::PkgIterator I = Dep.PkgBegin(); I.end() == false; ++I)
+   {
+      if (Dep[I].NewInstall() == true)
+	 Install++;
+      else
+      {
+	 if (Dep[I].Upgrade() == true)
+	    Upgrade++;
+	 else
+	    if (Dep[I].Downgrade() == true)
+	       Downgrade++;
+      }
+      
+      if (Dep[I].Delete() == false && (Dep[I].iFlags & pkgDepCache::ReInstall) == pkgDepCache::ReInstall)
+	 ReInstall++;
+   }   
+
+   ioprintf(out,_("%lu upgraded, %lu newly installed, "),
+	    Upgrade,Install);
+   
+   if (ReInstall != 0)
+      ioprintf(out,_("%lu reinstalled, "),ReInstall);
+   if (Downgrade != 0)
+      ioprintf(out,_("%lu downgraded, "),Downgrade);
+
+   ioprintf(out,_("%lu to remove and %lu not upgraded.\n"),
+	    Dep.DelCount(),Dep.KeepCount());
+   
+   if (Dep.BadCount() != 0)
+      ioprintf(out,_("%lu not fully installed or removed.\n"),
+	       Dep.BadCount());
+}
+									/*}}}*/
+// YnPrompt - Yes No Prompt.						/*{{{*/
+// ---------------------------------------------------------------------
+/* Returns true on a Yes.*/
+bool YnPrompt(bool Default)
+{
+   /* nl_langinfo does not support LANGUAGE setting, so we unset it here
+      to have the help-message (hopefully) match the expected characters */
+   char * language = getenv("LANGUAGE");
+   if (language != NULL)
+      language = strdup(language);
+   if (language != NULL)
+      unsetenv("LANGUAGE");
+
+   if (Default == true)
+      // TRANSLATOR: Yes/No question help-text: defaulting to Y[es]
+      //             e.g. "Do you want to continue? [Y/n] "
+      //             The user has to answer with an input matching the
+      //             YESEXPR/NOEXPR defined in your l10n.
+      c2out << " " << _("[Y/n]") << " " << std::flush;
+   else
+      // TRANSLATOR: Yes/No question help-text: defaulting to N[o]
+      //             e.g. "Should this file be removed? [y/N] "
+      //             The user has to answer with an input matching the
+      //             YESEXPR/NOEXPR defined in your l10n.
+      c2out << " " << _("[y/N]") << " " << std::flush;
+
+   if (language != NULL)
+   {
+      setenv("LANGUAGE", language, 0);
+      free(language);
+   }
+
+   if (_config->FindB("APT::Get::Assume-Yes",false) == true)
+   {
+      // TRANSLATOR: "Yes" answer printed for a yes/no question if --assume-yes is set
+      c1out << _("Y") << std::endl;
+      return true;
+   }
+   else if (_config->FindB("APT::Get::Assume-No",false) == true)
+   {
+      // TRANSLATOR: "No" answer printed for a yes/no question if --assume-no is set
+      c1out << _("N") << std::endl;
+      return false;
+   }
+
+   char response[1024] = "";
+   std::cin.getline(response, sizeof(response));
+
+   if (!std::cin)
+      return false;
+
+   if (strlen(response) == 0)
+      return Default;
+
+   regex_t Pattern;
+   int Res;
+
+   Res = regcomp(&Pattern, nl_langinfo(YESEXPR),
+                 REG_EXTENDED|REG_ICASE|REG_NOSUB);
+
+   if (Res != 0) {
+      char Error[300];        
+      regerror(Res,&Pattern,Error,sizeof(Error));
+      return _error->Error(_("Regex compilation error - %s"),Error);
+   }
+   
+   Res = regexec(&Pattern, response, 0, NULL, 0);
+   if (Res == 0)
+      return true;
+   return false;
+}
+									/*}}}*/
+// AnalPrompt - Annoying Yes No Prompt.					/*{{{*/
+// ---------------------------------------------------------------------
+/* Returns true on a Yes.*/
+bool AnalPrompt(const char *Text)
+{
+   char Buf[1024];
+   std::cin.getline(Buf,sizeof(Buf));
+   if (strcmp(Buf,Text) == 0)
+      return true;
+   return false;
+}
+									/*}}}*/