Changeset 1629

Timestamp:

Nov 17, 2008, 10:53:16 PM (15 years ago)

Author:

Peter

Message:

made help output more flexible

Location:

trunk

Files:

• test/commandline_test.cc (modified) (1 diff)
• yat/utility/OptionArg.h (modified) (3 diffs)

trunk/test/commandline_test.cc

@@ -76 +76 @@
   OptionArg<std::string> dir(cmd, "d,dir", "output directory");
   OptionHelp help(cmd);
-  OptionSwitch target(cmd, "T,target", "treat DEST as a normal file", true);
+  OptionArg<std::string> target(cmd, "T,target", "treat DEST as a normal file", 
+                                true, "TARGET");
   OptionSwitch verbose(cmd, "v,verbose", "explain what is being done");
   OptionSwitch version(cmd, "version", "output version and exit");

trunk/yat/utility/OptionArg.h

@@ -52 +52 @@
        \brief Constructor 
        
-       \param cmd Commandline Option is associated with
-       \param name string such as "help" for --help, "h" for -h or
-       "h,help" for having both short and long option name
-       \param desc string used in help display
-       \param required If true option must be found in commandline or
-       exception is thrown in validation
+       \param cmd Commandline Option is associated with \param name
+       string such as "help" for --help, "h" for -h or "h,help" for
+       having both short and long option name \param desc string used
+       in help display \param required If true option must be found in
+       commandline or exception is thrown in validation \param arg
+       string to be used in help output such as `TARGET' in
+       `--target=TARGET'. See print3().
     */
     OptionArg(CommandLine& cmd, std::string name, std::string desc,
-              bool required=false)
-      : Option(cmd, name, desc), required_(required) {}
+              bool required=false, std::string arg="")
+      : Option(cmd, name, desc), print_arg_(arg), required_(required) {}
 
     /**
@@ -83 +84 @@
 
   private:
+    std::string print_arg_;
     bool required_;
     T value_;
@@ -155 +157 @@
 
     virtual void do_validate2(void) const {}
+
+    virtual std::string print3(void) const 
+    { 
+      if (print_arg_.empty())
+        return std::string("");
+      return std::string("=")+print_arg_; 
+    }
+
   };