[status] suppress warning if no target was set

frackit/sampling/status.hh

@@ -123,8 +123,10 @@ public:
     void increaseCounter(const Id& id)
     {
         count_[id.get()]++;
-        if (count_[id.get()] > targetCount_[id.get()])
-            std::cout << "Warning: target count for id " << id.get() << " was surpassed" << std::endl;
+
+        if (auto it = targetCount_.find(id.get()); it != targetCount_.end())
+            if (count_[id.get()] > it->second)
+                std::cout << "Warning: target count for id " << id.get() << " was surpassed" << std::endl;
     }
 
     /*!
@@ -230,12 +232,14 @@ public:
         for (const auto& pair : targetCount_) curTargetCount += pair.second;
         for (const auto& pair : rejectedCount_) curRejectedCount += pair.second;
 
+        const bool hasProgess = curTargetCount > 0;
         const auto ratio = 100.0*double(double(curCount)/double(curCount+curRejectedCount));
-        const auto progress = 100.0*double(curCount)/double(curTargetCount);
+        const auto progress = hasProgess ? 100.0*double(curCount)/double(curTargetCount) : 0.0;
 
         std::cout << std::setprecision(2) << std::fixed;
         const auto ratioNumChars = std::to_string(int(ratio)).size() + 3;
-        const auto progressNumChars = std::to_string(int(progress)).size() + 3;
+        const auto progressNumChars = hasProgess ? std::to_string(int(progress)).size() + 3
+                                                 : std::string("n.a.").size() + 3;
 
         const auto countString = std::to_string(curCount);
         const auto rejectedCountString = std::to_string(curRejectedCount);
@@ -250,7 +254,7 @@ public:
         std::cout << "  "      << std::string( paddingCount, ' ')    << countString + ' '
                   << "   |   " << std::string( paddingRejected, ' ') << rejectedCountString + ' '
                   << "   |   " << std::string( paddingRatio, ' ')    << ratio << std::string(4, ' ')
-                  << "   |   " << std::string( paddingProgess, ' ')  << progress << std::endl;
+                  << "   |   " << std::string( paddingProgess, ' ')  << (hasProgess ? std::to_string(progress) : "n.a.") << std::endl;
     }
 
     /*!