Changed << to check for user defined flag on stream and adapt its behaviour accordingly

functions.cc

@@ -4,6 +4,21 @@
 
 #include "options.h"
 
+// Below I declare variables and a function 
+// needed for changing the behaviour of << so that the 
+// user can chose between old style and more detailed 
+// output.
+// Jesper Andersson 
+namespace Utilities {
+  std::map<string,long> UserStreamFlag;
+  std::ostream &detailed_output(std::ostream& os)
+  {
+    if (UserStreamFlag.find("OutputType") == UserStreamFlag.end()) UserStreamFlag["OutputType"] = os.xalloc();
+    os.iword(UserStreamFlag["OutputType"]) = DetailedOutput;
+    return(os);
+  } 
+}
+
 namespace Utilities {
   
   using namespace std;
@@ -45,8 +60,13 @@ namespace Utilities {
   template<> ostream& Option<bool>::print(ostream& os) const 
   {
     os << "# " << help_text() << endl;
-    if(set())
-      os << config_key().substr(0, config_key().find("=")); 
+    if (Utilities::UserStreamFlag.find("OutputType") != Utilities::UserStreamFlag.end() && 
+	os.iword(Utilities::UserStreamFlag["OutputType"]) == Utilities::DetailedOutput) {
+      os << key() << "=" << ( set() ? "True" : "False");
+    }
+    else {
+      if (set()) os << config_key().substr(0, config_key().find("=")); 
+    }
 
     return os;
   }

options.h

@@ -8,6 +8,7 @@
 #include <stdexcept>
 #include <string>
 #include <vector>
+#include <map>
 #include <iostream>
 #include <sstream>
 #include <iterator>
@@ -17,6 +18,27 @@
 
 using namespace std;
 
+// Below I define constants and a function 
+// needed for changing the behaviour of << so that the 
+// user can chose between old style and more detailed 
+// output. If one wants for example a log-file with
+// details of all parameters one would do something like
+//
+// Utilities::OptionParser options(...)
+// ...
+// ofstream dpf; // Detailed Parameter File
+// Utilities::detailed_output(dpf);
+// dpf.open("my_file.txt"));
+// dpf << options << endl;
+// dpf.close();
+//
+// Jesper Andersson 
+namespace Utilities {
+  const long RegularOutput = 4;
+  const long DetailedOutput = 5;
+  std::ostream &detailed_output(std::ostream& os);
+}
+
 namespace Utilities {
 
   bool string_to_T(bool &b, const std::string& s);