Extraargs

This adds the ability to store extra arguments in the command line option parser. For example if you have something like this:

myapp -i blub -o bla file1.txt file2.txt file3.txt ......

file1.txt file2.txt etc will appear in the property tree in a list called extraargs extraargs is a node which contains elements that have an empty key and the values are the strings (in the example file1.txt etc) So you have to loop over the content of extraargs to retrieve the options.

This can be used to pass a list of files to an application. A well known example for this pattern is hadd

IOjuggler.h

@@ -32,6 +32,17 @@
 namespace pt = boost::property_tree;
 
 /**
+  * @fn print_ptree(const pt::ptree& configtree)
+  * @param configtree: reference to ptree that is printed
+  */
+inline void print_ptree(const pt::ptree& configtree){
+  for (const auto& it : configtree) {
+    std::cout << it.first << ": " << it.second.get_value<std::string>() << std::endl;
+    print_ptree(it.second);
+  }
+}
+
+/**
   * @fn parse_options(int argc, char** argv, STRING&& available_options)
   * @param argc, argv: Options to executable
   * @param available_options: Options that should be parseable from the executable. The maximally parseable options are currently "c:d:i:j:o:t:hw:r:m:n:".
@@ -68,6 +79,7 @@ inline const pt::ptree parse_options(int argc, char** argv, STRING&& available_o
   };
 
   extern char* optarg;
+  extern int optind;
   int ca;
   while ((ca = getopt(argc, argv, options)) != -1){
     switch (ca) {
@@ -112,6 +124,21 @@ inline const pt::ptree parse_options(int argc, char** argv, STRING&& available_o
     }
   }
 
+
+  // put list of arguments which can't be parsed into the property tree
+  //if (optind >= argc) {
+  // if we reqire additional paremters give an error message
+  //}
+  std::vector<std::string> extraarguments;
+  while (optind < argc) {
+    // use a little trick to create a list of values
+    pt::ptree ptr1;
+    ptr1.put("",std::string(argv[optind++]));
+    parsed_options.add_child("extraargs",ptr1);
+  }
+  
+  
+
   //now check mandatory options
   if((opts.Contains("c") && !parsed_options.get_optional<std::string>("config"))
   || (opts.Contains("i") && !parsed_options.get_optional<std::string>("infilename"))
@@ -139,6 +166,8 @@ inline const pt::ptree parse_options(int argc, char** argv, STRING&& available_o
     gSystem->mkdir(parsed_options.get<std::string>("workdir").data());
   }
 
+  print_ptree(parsed_options);
+  
   return parsed_options;//the ptree is moved implicitly!
 }
 
@@ -188,16 +217,7 @@ inline OBJTYPE* get_obj(TFile* infile, STR&& treename){
   return obj;
 }
 
-/**
-  * @fn print_ptree(const pt::ptree& configtree)
-  * @param configtree: reference to ptree that is printed
-  */
-inline void print_ptree(const pt::ptree& configtree){
-  for (const auto& it : configtree) {
-    std::cout << it.first << ": " << it.second.get_value<std::string>() << std::endl;
-    print_ptree(it.second);
-  }
-}
+
 /**
   * @fn get_ptree(STR&& config, bool print = false)
   * @param config: location of config file