From b3de8d2155a0b28042e4871a3448248b4cedce99 Mon Sep 17 00:00:00 2001
From: Jeff Palmer <jefferypalmer@hotmail.com>
Date: Fri, 1 Jun 2018 01:36:01 +0300
Subject: [PATCH] Configurable shell messages

This commit adds the possibility to configure various shell messages (and some
internal variables) by defining the respective macros at compile time.
---
 inc/shell.h           | 11 +++++++++++
 src/shell/shell_ver.c | 25 ++++++++++++++++++++-----
 2 files changed, 31 insertions(+), 5 deletions(-)

diff --git a/inc/shell.h b/inc/shell.h
index a787015c..a567d1e3 100644
--- a/inc/shell.h
+++ b/inc/shell.h
@@ -4,12 +4,23 @@
 #define __SHELL_H__
 
 #include "type.h"
+#include "platform_conf.h"
 
+#if !defined(SHELL_WELCOMEMSG)
 #define SHELL_WELCOMEMSG                "\neLua %s  Copyright (C) 2007-2013 www.eluaproject.net\n"
+#endif
+#if !defined(SHELL_PROMPT)
 #define SHELL_PROMPT                    "eLua# "
+#endif
+#if !defined(SHELL_ERRMSG)
 #define SHELL_ERRMSG                    "Invalid command, type 'help' for help\n"
+#endif
+#if !defined(SHELL_MAXSIZE)
 #define SHELL_MAXSIZE                   50
+#endif
+#if !defined(SHELL_MAX_LUA_ARGS)
 #define SHELL_MAX_LUA_ARGS              8
+#endif
 
 // Shell command handler function
 typedef void( *p_shell_handler )( int argc, char **argv );
diff --git a/src/shell/shell_ver.c b/src/shell/shell_ver.c
index 7af5b20a..b6bf8795 100644
--- a/src/shell/shell_ver.c
+++ b/src/shell/shell_ver.c
@@ -17,9 +17,24 @@
 #include "version.h"
 #endif
 
-const char shell_help_ver[] = "\n"
-  "This displays the git revision of the tree used to build eLua or an official version number if applicable.\n";
-const char shell_help_summary_ver[] = "show version information";
+#ifndef SHELL_HELP_VER_STRING
+#define SHELL_HELP_VER_STRING "\nThis displays the git revision of the tree used to build eLua or an official version number if applicable.\n"
+#endif
+
+#ifndef SHELL_HELP_SUMMARY_STRING
+#define SHELL_HELP_SUMMARY_STRING "show version information"
+#endif
+
+#ifndef SHELL_HELP_LINE1_STRING
+#define SHELL_HELP_LINE1_STRING "eLua version %s\n"
+#endif
+
+#ifndef SHELL_HELP_LINE2_STRING
+#define SHELL_HELP_LINE2_STRING "For more information visit www.eluaproject.net and wiki.eluaproject.net\n"
+#endif
+
+const char shell_help_ver[] = SHELL_HELP_VER_STRING;
+const char shell_help_summary_ver[] = SHELL_HELP_SUMMARY_STRING;
 
 void shell_ver( int argc, char **argv )
 {
@@ -28,7 +43,7 @@ void shell_ver( int argc, char **argv )
     SHELL_SHOW_HELP( ver );
     return;
   }
-  printf( "eLua version %s\n", ELUA_STR_VERSION );
-  printf( "For more information visit www.eluaproject.net and wiki.eluaproject.net\n" );
+  printf( SHELL_HELP_LINE1_STRING, ELUA_STR_VERSION );
+  printf( SHELL_HELP_LINE2_STRING );
 }