Added dynamic postfix text sample based on #56

include/indicators/block_progress_bar.hpp

@@ -8,8 +8,10 @@
 #include <atomic>
 #include <chrono>
 #include <indicators/setting.hpp>
+#include <indicators/terminal_size.hpp>
 #include <iomanip>
 #include <iostream>
+#include <sstream>
 #include <mutex>
 #include <string>
 #include <thread>
@@ -160,6 +162,12 @@ private:
     }
   }
 
+  size_t get_prefix_length() {
+    std::stringstream os;
+    os << get_value<details::ProgressBarOption::prefix_text>();
+    return os.str().size();
+  }
+
 public:
   void print_progress(bool from_multi_progress = false) {
     std::lock_guard<std::mutex> lock{mutex_};

include/indicators/progress_bar.hpp

@@ -9,6 +9,7 @@
 #include <cmath>
 #include <indicators/color.hpp>
 #include <indicators/setting.hpp>
+#include <indicators/terminal_size.hpp>
 #include <iomanip>
 #include <iostream>
 #include <sstream>