shell.c

00001  /*
00002  * Copyright (c) 2003, Adam Dunkels.
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. The name of the author may not be used to endorse or promote
00014  *    products derived from this software without specific prior
00015  *    written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
00018  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
00019  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
00021  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
00023  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00024  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
00025  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00026  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00027  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00028  *
00029  * This file is part of the uIP TCP/IP stack.
00030  *
00031  * $Id: shell.c,v 1.1 2006/06/07 09:43:54 adam Exp $
00032  *
00033  */
00034 
00035 #include "shell.h"
00036 
00037 #include <string.h>
00038 
00039 struct ptentry {
00040   char *commandstr;
00041   void (* pfunc)(char *str);
00042 };
00043 
00044 #define SHELL_PROMPT "uIP 1.0> "
00045 
00046 /*---------------------------------------------------------------------------*/
00047 static void
00048 parse(register char *str, struct ptentry *t)
00049 {
00050   struct ptentry *p;
00051   for(p = t; p->commandstr != NULL; ++p) {
00052     if(strncmp(p->commandstr, str, strlen(p->commandstr)) == 0) {
00053       break;
00054     }
00055   }
00056 
00057   p->pfunc(str);
00058 }
00059 /*---------------------------------------------------------------------------*/
00060 static void
00061 inttostr(register char *str, unsigned int i)
00062 {
00063   str[0] = '0' + i / 100;
00064   if(str[0] == '0') {
00065     str[0] = ' ';
00066   }
00067   str[1] = '0' + (i / 10) % 10;
00068   if(str[0] == ' ' && str[1] == '0') {
00069     str[1] = ' ';
00070   }
00071   str[2] = '0' + i % 10;
00072   str[3] = ' ';
00073   str[4] = 0;
00074 }
00075 /*---------------------------------------------------------------------------*/
00076 static void
00077 help(char *str)
00078 {
00079   shell_output("Available commands:", "");
00080   shell_output("stats   - show network statistics", "");
00081   shell_output("conn    - show TCP connections", "");
00082   shell_output("help, ? - show help", "");
00083   shell_output("exit    - exit shell", "");
00084 }
00085 /*---------------------------------------------------------------------------*/
00086 static void
00087 unknown(char *str)
00088 {
00089   if(strlen(str) > 0) {
00090     shell_output("Unknown command: ", str);
00091   }
00092 }
00093 /*---------------------------------------------------------------------------*/
00094 static struct ptentry parsetab[] =
00095   {{"stats", help},
00096    {"conn", help},
00097    {"help", help},
00098    {"exit", shell_quit},
00099    {"?", help},
00100 
00101    /* Default action */
00102    {NULL, unknown}};
00103 /*---------------------------------------------------------------------------*/
00104 void
00105 shell_init(void)
00106 {
00107 }
00108 /*---------------------------------------------------------------------------*/
00109 void
00110 shell_start(void)
00111 {
00112   shell_output("uIP command shell", "");
00113   shell_output("Type '?' and return for help", "");
00114   shell_prompt(SHELL_PROMPT);
00115 }
00116 /*---------------------------------------------------------------------------*/
00117 void
00118 shell_input(char *cmd)
00119 {
00120   parse(cmd, parsetab);
00121   shell_prompt(SHELL_PROMPT);
00122 }
00123 /*---------------------------------------------------------------------------*/