/*
* error number for finsh shell.
*
* COPYRIGHT (C) 2013, Shanghai Real-Thread Technology Co., Ltd
*
* This file is part of RT-Thread (http://www.rt-thread.org)
* Maintainer: bernard.xiong <bernard.xiong at gmail.com>
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2010-03-22 Bernard first version
*/
#include "finsh_error.h"
u_char global_errno; //静态全局变量，错误码
//错误类型对应的字符串
static const char * finsh_error_string_table[] =
{
"No error",
"Invalid token",
"Expect a type",
"Unknown type",
"Variable exist",
"Expect a operater",
"Memory full",
"Unknown operator",
"Unknown node",
"Expect a character",
"Unexpect end",
"Unknown token",
"Float not supported",
"Unknown symbol",
"Null node"
};
//错误码初始化
int finsh_error_init()
{
global_errno = FINSH_ERROR_OK;
return 0;
}
//设置错误码
int finsh_error_set(u_char type)
{
global_errno = type;
return 0;
}
//获取错误码
u_char finsh_errno()
{
return global_errno;
}
//通过错误码返回错误字符串
const char* finsh_error_string(u_char type)
{
return finsh_error_string_table[type];
}本文出自 “山下问童子” 博客，请务必保留此出处http://linpeng.blog.51cto.com/9779987/1685378
RT-Thread finsh源码分析: finsh_error.c
原文地址：http://linpeng.blog.51cto.com/9779987/1685378
