implement default apt-get file --release-info mode

Selecting targets based on the Release they belong to isn't to
unrealistic. In fact, it is assumed to be the most used case so it is
made the default especially as this allows to bundle another thing we
have to be careful with: Filenames and only showing targets we have
acquired.

Closes: 752702

1 files changed, 23 insertions, 3 deletions

diff --git a/cmdline/apt-get.cc b/cmdline/apt-get.cc
index 0fff2db58..a4cd3c377 100644
--- a/cmdline/apt-get.cc
+++ b/cmdline/apt-get.cc
@@ -1628,15 +1628,34 @@ static bool DoFiles(CommandLine &CmdL)
       return false;
 
    std::string const Format = _config->Find("APT::Get::Files::Format");
+   bool const ReleaseInfo = _config->FindB("APT::Get::Files::ReleaseInfo", true);
    bool Filtered = CmdL.FileSize() > 1;
    for (pkgSourceList::const_iterator S = SrcList->begin(); S != SrcList->end(); ++S)
    {
       std::vector<IndexTarget> const targets = (*S)->GetIndexTargets();
       std::map<std::string, string> AddOptions;
-      AddOptions.insert(std::make_pair("TRUSTED", ((*S)->IsTrusted() ? "yes" : "no")));
+      if (ReleaseInfo)
+      {
+	 AddOptions.insert(std::make_pair("TRUSTED", ((*S)->IsTrusted() ? "yes" : "no")));
+	 pkgCache &Cache = *CacheFile.GetPkgCache();
+	 pkgCache::RlsFileIterator const RlsFile = (*S)->FindInCache(Cache, false);
+	 if (RlsFile.end())
+	    continue;
+#define APT_RELEASE(X,Y) if (RlsFile.Y() != NULL) AddOptions.insert(std::make_pair(X, RlsFile.Y()))
+	 APT_RELEASE("CODENAME", Codename);
+	 APT_RELEASE("SUITE", Archive);
+	 APT_RELEASE("VERSION", Version);
+	 APT_RELEASE("ORIGIN", Origin);
+	 APT_RELEASE("LABEL", Label);
+#undef APT_RELEASE
+      }
 
       for (std::vector<IndexTarget>::const_iterator T = targets.begin(); T != targets.end(); ++T)
       {
+	 std::string filename = T->Option(ReleaseInfo ? IndexTarget::EXISTING_FILENAME : IndexTarget::FILENAME);
+	 if (filename.empty())
+	    continue;
+
 	 std::ostringstream stanza;
 	 if (Filtered || Format.empty())
 	 {
@@ -1644,7 +1663,7 @@ static bool DoFiles(CommandLine &CmdL)
 	       << "ShortDesc: " << T->ShortDesc << "\n"
 	       << "Description: " << T->Description << "\n"
 	       << "URI: " << T->URI << "\n"
-	       << "Filename: " << T->Option(IndexTarget::FILENAME) << "\n"
+	       << "Filename: " << filename << "\n"
 	       << "Optional: " << (T->IsOptional ? "yes" : "no") << "\n";
 	    for (std::map<std::string,std::string>::const_iterator O = AddOptions.begin(); O != AddOptions.end(); ++O)
 	       stanza << format_key(O->first) << ": " << O->second << "\n";
@@ -1677,7 +1696,8 @@ static bool DoFiles(CommandLine &CmdL)
 	    cout << stanza.str();
 	 else
 	 {
-	    std::string out = T->Format(Format);
+	    std::string out = SubstVar(Format, "$(FILENAME)", filename);
+	    out = T->Format(out);
 	    for (std::map<std::string,std::string>::const_iterator O = AddOptions.begin(); O != AddOptions.end(); ++O)
 	       out = SubstVar(out, std::string("$(") + O->first + ")", O->second);
 	    cout << out << std::endl;