mcs/class/Mono.Options/Documentation/en/examples/bundling.cs

   1 using System;
   2 using System.Linq;
   3 using System.Collections.Generic;
   4 using Mono.Options;
   5
   6 class Test {
   7         public static void Main (string[] args)
   8         {
   9                 var show_help = false;
  10                 var macros = new Dictionary<string, string>();
  11                 bool create = false, extract = false, list = false;
  12                 string output = null, input = null;
  13                 string color  = null;
  14
  15                 var p = new OptionSet () {
  16                         "Usage: bundling [OPTIONS]+",
  17                         "Demo program to show the effects of bundling options and their values",
  18                         "",
  19                         "gcc-like options:",
  20                         { "D:", "Predefine a macro with an (optional) value.",
  21                                 (m, v) => {
  22                                         if (m == null)
  23                                                 throw new OptionException ("Missing macro name for option -D.",
  24                                                                 "-D");
  25                                         macros.Add (m, v);
  26                                 } },
  27                         { "d={-->}{=>}", "Alternate macro syntax.",
  28                                 (m, v) => macros.Add (m, v) },
  29                         { "o=", "Specify the output file", v => output = v },
  30
  31                         "",
  32                         "tar-like options:",
  33                         { "f=", "The input file",   v => input = v },
  34                         { "x",  "Extract the file", v => extract = v != null },
  35                         { "c",  "Create the file",  v => create = v != null },
  36                         { "t",  "List the file",    v => list = v != null },
  37
  38                         "",
  39                         "ls-like optional values:",
  40                         { "color:", "control whether and when color is used",
  41                                 v => color = v },
  42
  43                         "",
  44                         "other:",
  45                         { "h|help",  "show this message and exit",
  46                           v => show_help = v != null },
  47                         // default
  48                         { "<>",
  49                                 v => Console.WriteLine ("def handler: color={0}; arg={1}", color, v)},
  50                 };
  51
  52                 try {
  53                         p.Parse (args);
  54                 }
  55                 catch (OptionException e) {
  56                         Console.Write ("bundling: ");
  57                         Console.WriteLine (e.Message);
  58                         Console.WriteLine ("Try `greet --help' for more information.");
  59                         return;
  60                 }
  61
  62                 if (show_help) {
  63                         p.WriteOptionDescriptions (Console.Out);
  64                         return;
  65                 }
  66
  67                 Console.WriteLine ("Macros:");
  68                 foreach (var m in (from k in macros.Keys orderby k select k)) {
  69                         Console.WriteLine ("\t{0}={1}", m, macros [m] ?? "<null>");
  70                 }
  71                 Console.WriteLine ("Options:");
  72                 Console.WriteLine ("\t Input File: {0}", input);
  73                 Console.WriteLine ("\tOuptut File: {0}", output);
  74                 Console.WriteLine ("\t     Create: {0}", create);
  75                 Console.WriteLine ("\t    Extract: {0}", extract);
  76                 Console.WriteLine ("\t       List: {0}", list);
  77                 Console.WriteLine ("\t      Color: {0}", color ?? "<null>");
  78         }
  79 }
  80