apt-helper: Add a cat-file command for concatening files

[apt.git] / apt-private / private-output.h

diff --git a/apt-private/private-output.h b/apt-private/private-output.h
index 6f3a964d76124b09488d71873f9718d87b325d0a..8e4b50ed11bba7d231b6cb48627c6dd7fc55f980 100644 (file)
--- a/apt-private/private-output.h
+++ b/apt-private/private-output.h
@@ -1,11 +1,14 @@
 #ifndef APT_PRIVATE_OUTPUT_H
 #define APT_PRIVATE_OUTPUT_H
 
+#include <apt-pkg/configuration.h>
 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/macros.h>
 
+#include <functional>
 #include <fstream>
 #include <string>
+#include <iostream>
 
 // forward declaration
 class pkgCacheFile;
@@ -20,19 +23,72 @@ APT_PUBLIC extern std::ostream c2out;
 APT_PUBLIC extern std::ofstream devnull;
 APT_PUBLIC extern unsigned int ScreenWidth;
 
-APT_PUBLIC bool InitOutput();
+APT_PUBLIC bool InitOutput(std::basic_streambuf<char> * const out = std::cout.rdbuf());
 
 void ListSingleVersion(pkgCacheFile &CacheFile, pkgRecords &records,
-                       pkgCache::VerIterator V, std::ostream &out,
-                       bool include_summary=true);
+                       pkgCache::VerIterator const &V, std::ostream &out,
+                       std::string const &format);
 
 
 // helper to describe global state
 APT_PUBLIC void ShowBroken(std::ostream &out, CacheFile &Cache, bool const Now);
 APT_PUBLIC void ShowBroken(std::ostream &out, pkgCacheFile &Cache, bool const Now);
 
-APT_PUBLIC bool ShowList(std::ostream &out, std::string Title, std::string List,
-              std::string VersionsList);
+template<class Container, class PredicateC, class DisplayP, class DisplayV> bool ShowList(std::ostream &out, std::string const &Title,
+      Container const &cont,
+      PredicateC Predicate,
+      DisplayP PkgDisplay,
+      DisplayV VerboseDisplay)
+{
+   size_t const ScreenWidth = (::ScreenWidth > 3) ? ::ScreenWidth - 3 : 0;
+   int ScreenUsed = 0;
+   bool const ShowVersions = _config->FindB("APT::Get::Show-Versions", false);
+   bool printedTitle = false;
+
+   for (auto const &Pkg: cont)
+   {
+      if (Predicate(Pkg) == false)
+        continue;
+
+      if (printedTitle == false)
+      {
+        out << Title;
+        printedTitle = true;
+      }
+
+      if (ShowVersions == true)
+      {
+        out << std::endl << "   " << PkgDisplay(Pkg);
+        std::string const verbose = VerboseDisplay(Pkg);
+        if (verbose.empty() == false)
+           out << " (" << verbose << ")";
+      }
+      else
+      {
+        std::string const PkgName = PkgDisplay(Pkg);
+        if (ScreenUsed == 0 || (ScreenUsed + PkgName.length()) >= ScreenWidth)
+        {
+           out << std::endl << "  ";
+           ScreenUsed = 0;
+        }
+        else if (ScreenUsed != 0)
+        {
+           out << " ";
+           ++ScreenUsed;
+        }
+        out << PkgName;
+        ScreenUsed += PkgName.length();
+      }
+   }
+
+   if (printedTitle == true)
+   {
+      out << std::endl;
+      return false;
+   }
+   return true;
+}
+
 void ShowNew(std::ostream &out,CacheFile &Cache);
 void ShowDel(std::ostream &out,CacheFile &Cache);
 void ShowKept(std::ostream &out,CacheFile &Cache);
@@ -48,4 +104,12 @@ void Stats(std::ostream &out, pkgDepCache &Dep);
 bool YnPrompt(bool Default=true);
 bool AnalPrompt(const char *Text);
 
+std::string PrettyFullName(pkgCache::PkgIterator const &Pkg);
+std::string CandidateVersion(pkgCacheFile * const Cache, pkgCache::PkgIterator const &Pkg);
+std::function<std::string(pkgCache::PkgIterator const &)> CandidateVersion(pkgCacheFile * const Cache);
+std::string CurrentToCandidateVersion(pkgCacheFile * const Cache, pkgCache::PkgIterator const &Pkg);
+std::function<std::string(pkgCache::PkgIterator const &)> CurrentToCandidateVersion(pkgCacheFile * const Cache);
+std::string EmptyString(pkgCache::PkgIterator const &);
+bool AlwaysTrue(pkgCache::PkgIterator const &);
+
 #endif