add --print-options to print available options in short format

fairmq/options/FairMQProgOptions.cxx

@@ -68,6 +68,18 @@ void FairMQProgOptions::ParseAll(const int argc, char** argv, bool allowUnregist
         }
     }
 
+    if (fVarMap.count("print-options"))
+    {
+        PrintOptionsRaw();
+        exit(EXIT_SUCCESS);
+    }
+
+    if (fVarMap.count("id") == 0)
+    {
+        LOG(ERROR) << "Device id not provided, provide with --id";
+        exit(EXIT_FAILURE);
+    }
+
     string verbosity = GetValue<string>("verbosity");
     string logFile = GetValue<string>("log-to-file");
     bool color = GetValue<bool>("log-color");
@@ -183,7 +195,6 @@ void FairMQProgOptions::ParseAll(const int argc, char** argv, bool allowUnregist
             LOG(DEBUG) << "channel-config: Parsing channel configuration";
             UserParser<FairMQParser::SUBOPT>(fVarMap, id);
         }
-
     }
 
     FairProgOptions::PrintOptions();
@@ -312,7 +323,7 @@ void FairMQProgOptions::InitOptionDescription()
             ;
 
         fMQOptionsInCfg.add_options()
-            ("id",                     po::value<string>()->required(),                         "Device ID (required argument).")
+            ("id",                     po::value<string>(),                                     "Device ID (required argument).")
             ("io-threads",             po::value<int   >()->default_value(1),                   "Number of I/O threads.")
             ("transport",              po::value<string>()->default_value("zeromq"),            "Transport ('zeromq'/'nanomsg').")
             ("config",                 po::value<string>()->default_value("static"),            "Config source ('static'/<config library filename>).")
@@ -331,7 +342,7 @@ void FairMQProgOptions::InitOptionDescription()
     else
     {
         fMQOptionsInCmd.add_options()
-            ("id",                     po::value<string>()->required(),                         "Device ID (required argument)")
+            ("id",                     po::value<string>(),                                     "Device ID (required argument)")
             ("io-threads",             po::value<int   >()->default_value(1),                   "Number of I/O threads")
             ("transport",              po::value<string>()->default_value("zeromq"),            "Transport ('zeromq'/'nanomsg').")
             ("config",                 po::value<string>()->default_value("static"),            "Config source ('static'/<config library filename>).")

fairmq/options/FairProgOptions.cxx

@@ -37,18 +37,9 @@ FairProgOptions::FairProgOptions() :
     fGenericDesc.add_options()
         ("help,h", "produce help")
         ("version,v", "print version")
-        ("verbosity", po::value<std::string>(&fVerbosityLevel)->default_value("DEBUG"), "Verbosity level : \n"
+        ("verbosity", po::value<std::string>(&fVerbosityLevel)->default_value("DEBUG"), "Verbosity level : TRACE, DEBUG, RESULTS, INFO, WARN, ERROR, STATE, NOLOG")
-            "  TRACE \n"
-            "  DEBUG \n"
-            "  RESULTS \n"
-            "  INFO \n"
-            "  WARN \n"
-            "  ERROR \n"
-            "  STATE \n"
-            "  NOLOG"
-            )
         ("log-color", po::value<bool>()->default_value(true), "logger color: true or false")
-        ;
+        ("print-options", po::value<bool>()->implicit_value(true), "print options in machine-readable format");
 
     fSeverityMap["TRACE"]   = FairMQ::severity_level::TRACE;
     fSeverityMap["DEBUG"]   = FairMQ::severity_level::DEBUG;
@@ -241,6 +232,31 @@ int FairProgOptions::PrintHelp()  const
     return 0;
 }
 
+int FairProgOptions::PrintOptionsRaw()
+{
+    MapVarValInfo_t mapInfo;
+
+    for (const auto& m : fVarMap)
+    {
+        mapInfo[m.first] = GetVariableValueInfo(m.second);
+    }
+
+    for (const auto& p : mapInfo)
+    {
+        string keyStr;
+        string valueStr;
+        string typeInfoStr;
+        string defaultStr;
+        string emptyStr;
+        keyStr = p.first;
+        tie(valueStr, typeInfoStr, defaultStr, emptyStr) = p.second;
+        auto option = fCmdLineOptions.find_nothrow(keyStr, false);
+        cout << keyStr << ":" << valueStr << ":" << typeInfoStr << ":" << (option ? option->description() : "<not found>") << endl;
+    }
+
+    return 0;
+}
+
 int FairProgOptions::PrintOptions()
 {
     // //////////////////////////////////

fairmq/options/FairProgOptions.h

@@ -135,6 +135,7 @@ class FairProgOptions
     virtual void ParseAll(const int argc, char** argv, bool allowUnregistered = false) = 0;// TODO change return type to bool and propagate to executable
 
     virtual int PrintOptions();
+    virtual int PrintOptionsRaw();
     int PrintHelp() const;
 
   protected:

fairmq/options/FairProgOptionsHelper.h

@@ -205,6 +205,10 @@ struct ConvertVariableValue : T
         if (is_this_type<std::size_t>(varValue))
             return T::template Value<std::size_t>(varValue, std::string("<std::size_t>"), defaultedValue, emptyValue);
 
+        // uint64_t
+        if (is_this_type<std::uint64_t>(varValue))
+            return T::template Value<std::uint64_t>(varValue, std::string("<std::uint64_t>"), defaultedValue, emptyValue);
+
         // std::vector size_t
         if (is_this_type<std::vector<std::size_t>>(varValue))
             return T::template Value<std::vector<std::size_t>>(varValue, std::string("<vector<std::size_t>>"), defaultedValue, emptyValue);