Handle user input if first PMC line is empty

Change-Id: I456fd9360a4a8506fadcc975e71da112a26b07ae

src/utils/exception.h

@@ -36,14 +36,16 @@ class Exception : public std::runtime_error {
   Exception() = delete;
 
   explicit Exception(rocprofiler_status_t status, const char* what_arg = "")
-      : std::runtime_error(std::string(rocprofiler_error_str(status)) + " " +
-                           what_arg),
+      : std::runtime_error(std::string(rocprofiler_error_str(status)) + " " + what_arg),
         status_(status) {}
-
   rocprofiler_status_t status() const noexcept { return status_; }
 
+  explicit Exception(const std::string& message) : std::runtime_error(message) { message_ = message; }
+  const char* what() const noexcept override { return message_.c_str(); }
+
  protected:
-  const rocprofiler_status_t status_;
+  rocprofiler_status_t status_;
+  std::string message_;
 };
 
 };  // namespace rocprofiler

src/utils/helper.cpp

@@ -144,7 +144,6 @@ std::string string_printf(const char* format, ...) {
 #endif /* defined (ENABLE_BACKTRACE) */
 
   std::string errmsg("ROCProfiler: fatal error: " + message);
-  fputs(errmsg.c_str(), stderr);
 
   std::cerr << errmsg << std::endl;
   abort();
@@ -251,7 +250,7 @@ void trim(std::string& str) {
 // replace unsuported specail chars with space
 static void handle_special_chars(std::string& str) {
   std::set<char> specialChars = {'!', '@', '#', '$', '%', '&', '(', ')', ',', '*', '+', '-', '.',
-                                 '/', ';', '<', '=', '>', '?', '@', '{', '}', '^', '`', '~', '|'};
+                                 '/', ';', '<', '=', '>', '?', '@', '{', '}', '^', '`', '~', '|', ':'};
 
   // Iterate over the string and replace any special characters with a space.
   for (unsigned int i = 0; i < str.length(); i++) {
@@ -277,6 +276,14 @@ void validate_counters_format(std::vector<std::string>& counters, std::string li
       }
     }
   }
+
+ // raise exception with correct usage if user still managed to corrupt input
+  for(const auto &itr: counters)
+  {
+    if(!has_counter_format(itr)){
+      rocprofiler::fatal("Bad input metric. usage --> pmc: <counter1> <counter2>");
+    } 
+  }
 }
 
 }  // namespace rocprofiler