Changes in demo/arg_parser_demo.cc [204:77d56a21c3ab:137:483bc6ed7292] in lemon-1.0

File:

• demo/arg_parser_demo.cc (modified) (2 diffs)

demo/arg_parser_demo.cc

@@ -30 +30 @@
 int main(int argc, const char **argv)
 {
-  // Initialize the argument parser
-  ArgParser ap(argc, argv);
+  ArgParser ap(argc,argv);
   int i;
   std::string s;
-  double d = 1.0;
-  bool b, nh;
-  bool g1, g2, g3;
-
-  // Add a mandatory integer option with storage reference
-  ap.refOption("n", "An integer input.", i, true);
-  // Add a double option with storage reference (the default value is 1.0)
-  ap.refOption("val", "A double input.", d);
-  // Add a double option without storage reference (the default value is 3.14)
-  ap.doubleOption("val2", "A double input.", 3.14);
-  // Set synonym for -val option
-  ap.synonym("vals", "val");
-  // Add a string option
-  ap.refOption("name", "A string input.", s);
-  // Add bool options
-  ap.refOption("f", "A switch.", b)
-    .refOption("nohelp", "", nh)
-    .refOption("gra", "Choice A", g1)
-    .refOption("grb", "Choice B", g2)
-    .refOption("grc", "Choice C", g3);
-  // Bundle -gr* options into a group
-  ap.optionGroup("gr", "gra")
-    .optionGroup("gr", "grb")
-    .optionGroup("gr", "grc");
-  // Set the group mandatory
-  ap.mandatoryGroup("gr");
-  // Set the options of the group exclusive (only one option can be given)
-  ap.onlyOneGroup("gr");
-  // Add non-parsed arguments (e.g. input files)
-  ap.other("infile", "The input file.")
+  double d;
+  bool b,sil;
+  bool g1,g2,g3;
+  ap.refOption("n", "An integer input.", i, true)
+    .refOption("val", "A double input.", d)
+    .doubleOption("val2", "A double input.", d)
+    .synonym("vals","val")
+    .refOption("name", "A string input.", s)
+    .refOption("f", "A switch.", b)
+    .refOption("nohelp", "", sil)
+    .refOption("gra","Choice A",g1)
+    .refOption("grb","Choice B",g2)
+    .refOption("grc","Choice C",g3)
+    .optionGroup("gr","gra")
+    .optionGroup("gr","grb")
+    .optionGroup("gr","grc")
+    .mandatoryGroup("gr")
+    .onlyOneGroup("gr")
+    .other("infile","The input file.")
     .other("...");
   
-  // Perform the parsing process
-  // (in case of any error it terminates the program)
   ap.parse();
 
-  // Check each option if it has been given and print its value
   std::cout << "Parameters of '" << ap.commandName() << "':\n";
 
-  std::cout << "  Value of -n: " << i << std::endl;
+  if(ap.given("n")) std::cout << "  Value of -n: " << i << std::endl;
   if(ap.given("val")) std::cout << "  Value of -val: " << d << std::endl;
-  if(ap.given("val2")) {
-    d = ap["val2"];
-    std::cout << "  Value of -val2: " << d << std::endl;
-  }
   if(ap.given("name")) std::cout << "  Value of -name: " << s << std::endl;
   if(ap.given("f")) std::cout << "  -f is given\n";
-  if(ap.given("nohelp")) std::cout << "  Value of -nohelp: " << nh << std::endl;
+  if(ap.given("nohelp")) std::cout << "  Value of -nohelp: " << sil << std::endl;
   if(ap.given("gra")) std::cout << "  -gra is given\n";
   if(ap.given("grb")) std::cout << "  -grb is given\n";
   if(ap.given("grc")) std::cout << "  -grc is given\n";
-  
+                                     
   switch(ap.files().size()) {
   case 0:
@@ -100 +81 @@
     std::cout << "    '" << ap.files()[i] << "'\n";
   
-  return 0;
 }