implement Identifier field for IndexTargets

[apt.git] / apt-pkg / deb / debmetaindex.cc

diff --git a/apt-pkg/deb/debmetaindex.cc b/apt-pkg/deb/debmetaindex.cc
index ea32e62357213525a89a0662f11c8f5be9b15ba7..ead07a479437e41d5cb81b3ad25b4b4f95d5a012 100644 (file)
--- a/apt-pkg/deb/debmetaindex.cc
+++ b/apt-pkg/deb/debmetaindex.cc
@@ -165,6 +165,7 @@ static void GetIndexTargetsFor(char const * const Type, std::string const &URI,
         std::string const tplMetaKey = APT_T_CONFIG_STR(flatArchive ? "flatMetaKey" : "MetaKey", "");
         std::string const tplShortDesc = APT_T_CONFIG_STR("ShortDescription", "");
         std::string const tplLongDesc = "$(SITE) " + APT_T_CONFIG_STR(flatArchive ? "flatDescription" : "Description", "");
+        std::string const tplIdentifier = APT_T_CONFIG_STR("Identifier", *T);
         bool const IsOptional = APT_T_CONFIG_BOOL("Optional", true);
         bool const KeepCompressed = APT_T_CONFIG_BOOL("KeepCompressed", GzipIndex);
         bool const DefaultEnabled = APT_T_CONFIG_BOOL("DefaultEnabled", true);
@@ -229,11 +230,14 @@ static void GetIndexTargetsFor(char const * const Type, std::string const &URI,
                  std::string MetaKey = tplMetaKey;
                  std::string ShortDesc = tplShortDesc;
                  std::string LongDesc = tplLongDesc;
+                 std::string Identifier = tplIdentifier;
                  for (std::map<std::string, std::string>::const_iterator O = Options.begin(); O != Options.end(); ++O)
                  {
-                    MetaKey = SubstVar(MetaKey, std::string("$(") + O->first + ")", O->second);
-                    ShortDesc = SubstVar(ShortDesc, std::string("$(") + O->first + ")", O->second);
-                    LongDesc = SubstVar(LongDesc, std::string("$(") + O->first + ")", O->second);
+                    std::string const varname = "$(" + O->first + ")";
+                    MetaKey = SubstVar(MetaKey, varname, O->second);
+                    ShortDesc = SubstVar(ShortDesc, varname, O->second);
+                    LongDesc = SubstVar(LongDesc, varname, O->second);
+                    Identifier = SubstVar(Identifier, varname, O->second);
                  }
 
                  {
@@ -291,6 +295,7 @@ static void GetIndexTargetsFor(char const * const Type, std::string const &URI,
                  // not available in templates, but in the indextarget
                  Options.insert(std::make_pair("BASE_URI", baseURI));
                  Options.insert(std::make_pair("REPO_URI", URI));
+                 Options.insert(std::make_pair("IDENTIFIER", Identifier));
                  Options.insert(std::make_pair("TARGET_OF", Type));
                  Options.insert(std::make_pair("CREATED_BY", *T));
                  Options.insert(std::make_pair("FALLBACK_OF", FallbackOf));
@@ -945,12 +950,13 @@ class APT_HIDDEN debSLTypeDebian : public pkgSourceList::Type             /*{{{*/
         std::map<std::string, std::string>::const_iterator const opt = Options.find(target);
         if (opt == Options.end())
            continue;
-        auto const tarItr = std::find(mytargets.begin(), mytargets.end(), target);
-        bool const optValue = StringToBool(opt->second);
-        if (optValue == true && tarItr == mytargets.end())
-           mytargets.push_back(target);
-        else if (optValue == false && tarItr != mytargets.end())
-           mytargets.erase(std::remove(mytargets.begin(), mytargets.end(), target), mytargets.end());
+        auto const idMatch = [&](std::string const &t) {
+           return target == _config->Find(std::string("Acquire::IndexTargets::") + Name + "::" + t + "::Identifier", t);
+        };
+        if (StringToBool(opt->second))
+           std::copy_if(alltargets.begin(), alltargets.end(), std::back_inserter(mytargets), idMatch);
+        else
+           mytargets.erase(std::remove_if(mytargets.begin(), mytargets.end(), idMatch), mytargets.end());
       }
       // if we can't order it in a 1000 steps we give up… probably a cycle
       for (auto i = 0; i < 1000; ++i)
@@ -972,6 +978,13 @@ class APT_HIDDEN debSLTypeDebian : public pkgSourceList::Type              /*{{{*/
         if (Changed == false)
            break;
       }
+      // remove duplicates without changing the order (in first appearance)
+      {
+        std::set<std::string> seenOnce;
+        mytargets.erase(std::remove_if(mytargets.begin(), mytargets.end(), [&](std::string const &t) {
+           return seenOnce.insert(t).second == false;
+        }), mytargets.end());
+      }
 
       bool UsePDiffs = _config->FindB("Acquire::PDiffs", true);
       {