improved print help in CommandLineParser

diff --git a/modules/core/src/cmdparser.cpp b/modules/core/src/cmdparser.cpp
index 4e7da03..7957344 100644 (file)
--- a/modules/core/src/cmdparser.cpp
+++ b/modules/core/src/cmdparser.cpp
@@ -261,6 +261,9 @@ template<typename _Tp>
 
  void CommandLineParser::printParams()
  {
+       int col_p = 30;
+       int col_d = 50;
+
        std::map<std::string, std::vector<std::string> >::iterator it;
        std::vector<string> keysVector;
        std::string buf;
@@ -278,12 +281,39 @@ template<typename _Tp>
                else if (keysVector[1] != "") buf += "--" + keysVector[1];
                if (del_space(it->second[0]) != "") buf += "=[" + del_space(it->second[0]) + "]";
 
-               cout << setw(28) << left << buf;
+               cout << setw(col_p-2) << left << buf;
+
+               if (buf.length() > col_p-2) 
+               {
+                       cout << endl << "  ";
+                       cout << setw(col_p-2) << left << " ";
+               }
 
                buf = "";
                if (del_space(it->second[1]) != "") buf += del_space(it->second[1]);
-                               
-               cout << setw(50) << left << buf << endl;
+
+               while (true)
+               {
+                       bool tr = (buf.length() >= col_d-2) ? true: false;
+                       int pos;
+
+                       if (tr)
+                       {
+                               pos = buf.find_first_of(' ');
+                               while (buf.find_first_of(' ', pos + 1 ) > 0 && pos < col_d-2) pos = buf.find_first_of(' ', pos + 1);
+                               pos++;
+                               cout << setw(col_d-2) << left << buf.substr(0, pos) << endl;
+                       }
+                       else
+                       {
+                               cout << setw(col_d-2) << left << buf<< endl;
+                               break;
+                       }
+
+                       buf.erase(0, pos);
+                       cout << "  ";
+                       cout << setw(col_p-2) << left << " ";
+               }
        }
  }