Merge branch 'extraargs' into 'master'

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`

See merge request !2

IOjuggler.h

@@ -31,6 +31,17 @@
 
 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
@@ -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