Update README and CHANGELOG

CHANGELOG.md

@@ -8,6 +8,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
  - Nest namespace rang (issue [#167](https://github.com/daniele77/cli/issues/167))
  - Add ascii value 8 for backspace (issue [#124](https://github.com/daniele77/cli/issues/124))
  - Add check for CMAKE_SKIP_INSTALL_RULES (issue [#160](https://github.com/daniele77/cli/issues/160))
+ - Add enter action (issue [#177](https://github.com/daniele77/cli/issues/177) - PR [#180](https://github.com/daniele77/cli/pull/177)) 
 
 ## [2.0.2] - 2022-08-18
 

README.md

@@ -298,7 +298,7 @@ ioc.run();
 
 You must provide at least a root menu for your cli:
 
-```
+```C++
 // create a menu (this is the root menu of our cli)
 auto rootMenu = make_unique<Menu>("myprompt");
 
@@ -311,7 +311,7 @@ Cli cli(std::move(rootMenu));
 
 You can add menus to existing menus, to get a hierarchy:
 
-```
+```C++
 auto rootMenu = make_unique<Menu>("myprompt");
 
 auto menuA = make_unique<Menu>("a_prompt");
@@ -368,7 +368,7 @@ The library supports adding commands handler via:
 - `std::function`
 - lambdas
 
-```
+```C++
 
 static void foo(std::ostream& out, int x) { out << x << std::endl; }
 
@@ -387,7 +387,7 @@ myMenu->Insert("lambda", [](std::ostream& out, int x){ out << x << std::endl; }
 There is no limit to the number of parameters that a command handler can take.
 They can be basic types and `std::string`s
 
-```
+```C++
 myMenu->Insert(
     "mycmd", 
     [](std::ostream& out, int a, double b, const std::string& c, bool d, long e)
@@ -405,7 +405,7 @@ myMenu->Insert(
 
 or they can be custom types overloading the `std::istream << operator`:
 
-```
+```C++
 struct Foo
 {
     friend istream & operator >> (istream &in, Foo& p);
@@ -430,7 +430,7 @@ myMenu->Insert(
 If you need it, you can have a command handlers taking an arbitrary
 number of `std::string` parameters:
 
-```
+```C++
 myMenu->Insert(
     "mycmd", 
     [](std::ostream& out, const std::vector<std::string>& pars)
@@ -443,6 +443,20 @@ myMenu->Insert(
 Please note that in this case your command handler must take *only one*
 parameter of type `std::vector<std::string>`.
 
+## Enter and exit actions
+
+You can add an enter action and/or an exit action (for example to print a welcome/goodbye message
+every time a user opens/closes a session, even a remote one):
+
+```C++
+Cli cli(std::move(rootMenu));
+cli.EnterAction(
+    [&enterActionDone](std::ostream& out) { out << "Welcome\n"; });
+cli.ExitAction(
+    [&enterActionDone](std::ostream& out) { out << "Goodbye\n"; });
+```
+
+
 ## License
 
 Distributed under the Boost Software License, Version 1.0.

include/cli/cli.h

@@ -194,15 +194,14 @@ namespace cli
 
         void EnterAction(std::ostream& out)
         {
-            if (enterAction) {
+            if (enterAction)
                 enterAction(out);
-            }
         }
 
-        void ExitAction( std::ostream& out )
+        void ExitAction(std::ostream& out)
         {
-            if ( exitAction )
-                exitAction( out );
+            if (exitAction)
+                exitAction(out);
         }
 
         void StdExceptionHandler(std::ostream& out, const std::string& cmd, const std::exception& e)
@@ -318,9 +317,8 @@ namespace cli
         {
             cli.EnterAction(out);
 
-            if (enterAction) {
+            if (enterAction)
                 enterAction(out);
-            }
         }
 
         void Exit()