666 lines
19 KiB
C
666 lines
19 KiB
C
/*
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* shell implementation for finsh shell.
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*
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* COPYRIGHT (C) 2006 - 2013, RT-Thread Development Team
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*
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* This file is part of RT-Thread (http://www.rt-thread.org)
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* Maintainer: bernard.xiong <bernard.xiong at gmail.com>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2006-04-30 Bernard the first version for FinSH
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* 2006-05-08 Bernard change finsh thread stack to 2048
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* 2006-06-03 Bernard add support for skyeye
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* 2006-09-24 Bernard remove the code related with hardware
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* 2010-01-18 Bernard fix down then up key bug.
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* 2010-03-19 Bernard fix backspace issue and fix device read in shell.
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* 2010-04-01 Bernard add prompt output when start and remove the empty history
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* 2011-02-23 Bernard fix variable section end issue of finsh shell
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* initialization when use GNU GCC compiler.
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*/
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#include <rthw.h>
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#include "finsh.h"
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#include "shell.h"
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#ifdef FINSH_USING_MSH
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#include "msh.h"
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#endif
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#ifdef _WIN32
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#include <stdio.h> /* for putchar */
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#endif
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/* finsh thread */
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static struct rt_thread finsh_thread;
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ALIGN(RT_ALIGN_SIZE)
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static char finsh_thread_stack[FINSH_THREAD_STACK_SIZE];
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struct finsh_shell* shell;
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#if defined(FINSH_USING_MSH) || (defined(RT_USING_DFS) && defined(DFS_USING_WORKDIR))
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#if defined(RT_USING_DFS)
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#include <dfs_posix.h>
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#endif
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const char* finsh_get_prompt()
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{
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#define _MSH_PROMPT "msh "
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#define _PROMPT "finsh "
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static char finsh_prompt[RT_CONSOLEBUF_SIZE + 1] = {0};
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#ifdef FINSH_USING_MSH
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if (msh_is_used()) strcpy(finsh_prompt, _MSH_PROMPT);
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else
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#endif
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strcpy(finsh_prompt, _PROMPT);
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#if defined(RT_USING_DFS) && defined(DFS_USING_WORKDIR)
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/* get current working directory */
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getcwd(&finsh_prompt[rt_strlen(finsh_prompt)], RT_CONSOLEBUF_SIZE - rt_strlen(finsh_prompt));
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#endif
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strcat(finsh_prompt, ">");
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return finsh_prompt;
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}
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#endif
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static rt_err_t finsh_rx_ind(rt_device_t dev, rt_size_t size)
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{
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RT_ASSERT(shell != RT_NULL);
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/* release semaphore to let finsh thread rx data */
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rt_sem_release(&shell->rx_sem);
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return RT_EOK;
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}
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/**
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* @ingroup finsh
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*
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* This function sets the input device of finsh shell.
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*
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* @param device_name the name of new input device.
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*/
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void finsh_set_device(const char* device_name)
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{
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rt_device_t dev = RT_NULL;
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RT_ASSERT(shell != RT_NULL);
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dev = rt_device_find(device_name);
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if (dev == RT_NULL)
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{
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rt_kprintf("finsh: can not find device: %s\n", device_name);
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return;
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}
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/* check whether it's a same device */
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if (dev == shell->device) return;
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/* open this device and set the new device in finsh shell */
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if (rt_device_open(dev, RT_DEVICE_OFLAG_RDWR | RT_DEVICE_FLAG_INT_RX |\
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RT_DEVICE_FLAG_STREAM) == RT_EOK)
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{
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if (shell->device != RT_NULL)
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{
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/* close old finsh device */
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rt_device_close(shell->device);
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rt_device_set_rx_indicate(shell->device, RT_NULL);
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}
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shell->device = dev;
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rt_device_set_rx_indicate(dev, finsh_rx_ind);
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}
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}
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/**
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* @ingroup finsh
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*
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* This function returns current finsh shell input device.
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*
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* @return the finsh shell input device name is returned.
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*/
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const char* finsh_get_device()
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{
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RT_ASSERT(shell != RT_NULL);
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return shell->device->parent.name;
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}
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/**
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* @ingroup finsh
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*
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* This function set the echo mode of finsh shell.
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*
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* FINSH_OPTION_ECHO=0x01 is echo mode, other values are none-echo mode.
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*
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* @param echo the echo mode
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*/
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void finsh_set_echo(rt_uint32_t echo)
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{
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RT_ASSERT(shell != RT_NULL);
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shell->echo_mode = (rt_uint8_t)echo;
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}
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/**
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* @ingroup finsh
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*
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* This function gets the echo mode of finsh shell.
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*
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* @return the echo mode
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*/
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rt_uint32_t finsh_get_echo()
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{
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RT_ASSERT(shell != RT_NULL);
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return shell->echo_mode;
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}
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static void shell_auto_complete(char* prefix)
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{
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rt_kprintf("\n");
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#ifdef FINSH_USING_MSH
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if (msh_is_used() == RT_TRUE)
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{
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msh_auto_complete(prefix);
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}
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else
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#endif
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{
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#ifndef FINSH_USING_MSH_ONLY
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extern void list_prefix(char* prefix);
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list_prefix(prefix);
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#endif
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}
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rt_kprintf("%s%s", FINSH_PROMPT, prefix);
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}
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#ifndef FINSH_USING_MSH_ONLY
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void finsh_run_line(struct finsh_parser* parser, const char *line)
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{
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const char* err_str;
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rt_kprintf("\n");
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finsh_parser_run(parser, (unsigned char*)line);
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/* compile node root */
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if (finsh_errno() == 0)
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{
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finsh_compiler_run(parser->root);
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}
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else
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{
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err_str = finsh_error_string(finsh_errno());
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rt_kprintf("%s\n", err_str);
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}
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/* run virtual machine */
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if (finsh_errno() == 0)
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{
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char ch;
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finsh_vm_run();
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ch = (unsigned char)finsh_stack_bottom();
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if (ch > 0x20 && ch < 0x7e)
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{
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rt_kprintf("\t'%c', %d, 0x%08x\n",
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(unsigned char)finsh_stack_bottom(),
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(unsigned int)finsh_stack_bottom(),
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(unsigned int)finsh_stack_bottom());
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}
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else
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{
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rt_kprintf("\t%d, 0x%08x\n",
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(unsigned int)finsh_stack_bottom(),
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(unsigned int)finsh_stack_bottom());
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}
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}
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finsh_flush(parser);
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}
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#endif
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#ifdef FINSH_USING_HISTORY
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static rt_bool_t shell_handle_history(struct finsh_shell* shell)
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{
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#if defined(_WIN32)
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int i;
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rt_kprintf("\r");
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for(i=0; i<= 60; i++)
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putchar(' ');
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rt_kprintf("\r");
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#else
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rt_kprintf("\033[2K\r");
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#endif
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rt_kprintf("%s%s", FINSH_PROMPT, shell->line);
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return RT_FALSE;
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}
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static void shell_push_history(struct finsh_shell* shell)
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{
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if (shell->line_position != 0)
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{
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/* push history */
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if (shell->history_count >= FINSH_HISTORY_LINES)
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{
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/* move history */
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int index;
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for (index = 0; index < FINSH_HISTORY_LINES - 1; index ++)
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{
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memcpy(&shell->cmd_history[index][0],
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&shell->cmd_history[index + 1][0], FINSH_CMD_SIZE);
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}
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memset(&shell->cmd_history[index][0], 0, FINSH_CMD_SIZE);
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memcpy(&shell->cmd_history[index][0], shell->line, shell->line_position);
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/* it's the maximum history */
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shell->history_count = FINSH_HISTORY_LINES;
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}
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else
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{
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memset(&shell->cmd_history[shell->history_count][0], 0, FINSH_CMD_SIZE);
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memcpy(&shell->cmd_history[shell->history_count][0], shell->line, shell->line_position);
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/* increase count and set current history position */
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shell->history_count ++;
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}
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}
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shell->current_history = shell->history_count;
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}
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#endif
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#ifndef RT_USING_HEAP
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struct finsh_shell _shell;
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#endif
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void finsh_thread_entry(void* parameter)
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{
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char ch;
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/* normal is echo mode */
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shell->echo_mode = 1;
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#ifndef FINSH_USING_MSH_ONLY
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finsh_init(&shell->parser);
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#endif
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rt_kprintf(FINSH_PROMPT);
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/* set console device as shell device */
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if (shell->device == RT_NULL)
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{
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#ifdef RT_USING_CONSOLE
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shell->device = rt_console_get_device();
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RT_ASSERT(shell->device);
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rt_device_set_rx_indicate(shell->device, finsh_rx_ind);
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rt_device_open(shell->device, (RT_DEVICE_OFLAG_RDWR | RT_DEVICE_FLAG_STREAM | RT_DEVICE_FLAG_INT_RX));
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#else
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RT_ASSERT(shell->device);
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#endif
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}
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while (1)
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{
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/* wait receive */
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if (rt_sem_take(&shell->rx_sem, RT_WAITING_FOREVER) != RT_EOK) continue;
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/* read one character from device */
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while (rt_device_read(shell->device, 0, &ch, 1) == 1)
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{
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/*
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* handle control key
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* up key : 0x1b 0x5b 0x41
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* down key: 0x1b 0x5b 0x42
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* right key:0x1b 0x5b 0x43
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* left key: 0x1b 0x5b 0x44
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*/
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if (ch == 0x1b)
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{
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shell->stat = WAIT_SPEC_KEY;
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continue;
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}
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else if (shell->stat == WAIT_SPEC_KEY)
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{
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if (ch == 0x5b)
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{
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shell->stat = WAIT_FUNC_KEY;
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continue;
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}
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shell->stat = WAIT_NORMAL;
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}
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else if (shell->stat == WAIT_FUNC_KEY)
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{
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shell->stat = WAIT_NORMAL;
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if (ch == 0x41) /* up key */
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{
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#ifdef FINSH_USING_HISTORY
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/* prev history */
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if (shell->current_history > 0)
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shell->current_history --;
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else
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{
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shell->current_history = 0;
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continue;
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}
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/* copy the history command */
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memcpy(shell->line, &shell->cmd_history[shell->current_history][0],
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FINSH_CMD_SIZE);
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shell->line_curpos = shell->line_position = strlen(shell->line);
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shell_handle_history(shell);
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#endif
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continue;
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}
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else if (ch == 0x42) /* down key */
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{
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#ifdef FINSH_USING_HISTORY
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/* next history */
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if (shell->current_history < shell->history_count - 1)
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shell->current_history ++;
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else
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{
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/* set to the end of history */
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if (shell->history_count != 0)
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shell->current_history = shell->history_count - 1;
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else
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continue;
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}
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memcpy(shell->line, &shell->cmd_history[shell->current_history][0],
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FINSH_CMD_SIZE);
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shell->line_curpos = shell->line_position = strlen(shell->line);
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shell_handle_history(shell);
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#endif
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continue;
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}
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else if (ch == 0x44) /* left key */
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{
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if (shell->line_curpos)
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{
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rt_kprintf("\b");
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shell->line_curpos --;
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}
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continue;
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}
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else if (ch == 0x43) /* right key */
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{
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if (shell->line_curpos < shell->line_position)
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{
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rt_kprintf("%c", shell->line[shell->line_curpos]);
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shell->line_curpos ++;
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}
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continue;
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}
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}
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/* handle CR key */
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if (ch == '\r')
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{
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char next;
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if (rt_device_read(shell->device, 0, &next, 1) == 1)
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ch = next;
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else ch = '\r';
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}
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/* handle tab key */
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else if (ch == '\t')
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{
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int i;
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/* move the cursor to the beginning of line */
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for (i = 0; i < shell->line_curpos; i++)
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rt_kprintf("\b");
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/* auto complete */
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shell_auto_complete(&shell->line[0]);
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/* re-calculate position */
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shell->line_curpos = shell->line_position = strlen(shell->line);
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continue;
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}
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/* handle backspace key */
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else if (ch == 0x7f || ch == 0x08)
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{
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/* note that shell->line_curpos >= 0 */
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if (shell->line_curpos == 0)
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continue;
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shell->line_position--;
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shell->line_curpos--;
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if (shell->line_position > shell->line_curpos)
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{
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int i;
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rt_memmove(&shell->line[shell->line_curpos],
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&shell->line[shell->line_curpos + 1],
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shell->line_position - shell->line_curpos);
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shell->line[shell->line_position] = 0;
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rt_kprintf("\b%s \b", &shell->line[shell->line_curpos]);
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/* move the cursor to the origin position */
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for (i = shell->line_curpos; i <= shell->line_position; i++)
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rt_kprintf("\b");
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}
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else
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{
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rt_kprintf("\b \b");
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shell->line[shell->line_position] = 0;
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}
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continue;
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}
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/* handle end of line, break */
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if (ch == '\r' || ch == '\n')
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{
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#ifdef FINSH_USING_HISTORY
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shell_push_history(shell);
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#endif
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#ifdef FINSH_USING_MSH
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if (msh_is_used() == RT_TRUE)
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{
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rt_kprintf("\n");
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msh_exec(shell->line, shell->line_position);
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}
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else
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#endif
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{
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#ifndef FINSH_USING_MSH_ONLY
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/* add ';' and run the command line */
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shell->line[shell->line_position] = ';';
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if (shell->line_position != 0) finsh_run_line(&shell->parser, shell->line);
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else rt_kprintf("\n");
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#endif
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}
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rt_kprintf(FINSH_PROMPT);
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memset(shell->line, 0, sizeof(shell->line));
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shell->line_curpos = shell->line_position = 0;
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break;
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}
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/* it's a large line, discard it */
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if (shell->line_position >= FINSH_CMD_SIZE)
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shell->line_position = 0;
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/* normal character */
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if (shell->line_curpos < shell->line_position)
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{
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int i;
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rt_memmove(&shell->line[shell->line_curpos + 1],
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&shell->line[shell->line_curpos],
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shell->line_position - shell->line_curpos);
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shell->line[shell->line_curpos] = ch;
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if (shell->echo_mode)
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rt_kprintf("%s", &shell->line[shell->line_curpos]);
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/* move the cursor to new position */
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for (i = shell->line_curpos; i < shell->line_position; i++)
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rt_kprintf("\b");
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}
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else
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{
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shell->line[shell->line_position] = ch;
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rt_kprintf("%c", ch);
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}
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ch = 0;
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shell->line_position ++;
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shell->line_curpos++;
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if (shell->line_position >= 80)
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{
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/* clear command line */
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shell->line_position = 0;
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shell->line_curpos = 0;
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}
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} /* end of device read */
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}
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}
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void finsh_system_function_init(const void* begin, const void* end)
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{
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_syscall_table_begin = (struct finsh_syscall*) begin;
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_syscall_table_end = (struct finsh_syscall*) end;
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}
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void finsh_system_var_init(const void* begin, const void* end)
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{
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_sysvar_table_begin = (struct finsh_sysvar*) begin;
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_sysvar_table_end = (struct finsh_sysvar*) end;
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}
|
|
|
|
#if defined(__ICCARM__) || defined(__ICCRX__) /* for IAR compiler */
|
|
#ifdef FINSH_USING_SYMTAB
|
|
#pragma section="FSymTab"
|
|
#pragma section="VSymTab"
|
|
#endif
|
|
#elif defined(__ADSPBLACKFIN__) /* for VisaulDSP++ Compiler*/
|
|
#ifdef FINSH_USING_SYMTAB
|
|
extern "asm" int __fsymtab_start;
|
|
extern "asm" int __fsymtab_end;
|
|
extern "asm" int __vsymtab_start;
|
|
extern "asm" int __vsymtab_end;
|
|
#endif
|
|
#elif defined(_MSC_VER)
|
|
#pragma section("FSymTab$a", read)
|
|
const char __fsym_begin_name[] = "__start";
|
|
const char __fsym_begin_desc[] = "begin of finsh";
|
|
__declspec(allocate("FSymTab$a")) const struct finsh_syscall __fsym_begin =
|
|
{
|
|
__fsym_begin_name,
|
|
__fsym_begin_desc,
|
|
NULL
|
|
};
|
|
|
|
#pragma section("FSymTab$z", read)
|
|
const char __fsym_end_name[] = "__end";
|
|
const char __fsym_end_desc[] = "end of finsh";
|
|
__declspec(allocate("FSymTab$z")) const struct finsh_syscall __fsym_end =
|
|
{
|
|
__fsym_end_name,
|
|
__fsym_end_desc,
|
|
NULL
|
|
};
|
|
#endif
|
|
|
|
/*
|
|
* @ingroup finsh
|
|
*
|
|
* This function will initialize finsh shell
|
|
*/
|
|
int finsh_system_init(void)
|
|
{
|
|
rt_err_t result;
|
|
|
|
#ifdef FINSH_USING_SYMTAB
|
|
#ifdef __CC_ARM /* ARM C Compiler */
|
|
extern const int FSymTab$$Base;
|
|
extern const int FSymTab$$Limit;
|
|
extern const int VSymTab$$Base;
|
|
extern const int VSymTab$$Limit;
|
|
finsh_system_function_init(&FSymTab$$Base, &FSymTab$$Limit);
|
|
#ifndef FINSH_USING_MSH_ONLY
|
|
finsh_system_var_init(&VSymTab$$Base, &VSymTab$$Limit);
|
|
#endif
|
|
#elif defined (__ICCARM__) || defined(__ICCRX__) /* for IAR Compiler */
|
|
finsh_system_function_init(__section_begin("FSymTab"),
|
|
__section_end("FSymTab"));
|
|
finsh_system_var_init(__section_begin("VSymTab"),
|
|
__section_end("VSymTab"));
|
|
#elif defined (__GNUC__) || defined(__TI_COMPILER_VERSION__)
|
|
/* GNU GCC Compiler and TI CCS */
|
|
extern const int __fsymtab_start;
|
|
extern const int __fsymtab_end;
|
|
extern const int __vsymtab_start;
|
|
extern const int __vsymtab_end;
|
|
finsh_system_function_init(&__fsymtab_start, &__fsymtab_end);
|
|
finsh_system_var_init(&__vsymtab_start, &__vsymtab_end);
|
|
#elif defined(__ADSPBLACKFIN__) /* for VisualDSP++ Compiler */
|
|
finsh_system_function_init(&__fsymtab_start, &__fsymtab_end);
|
|
finsh_system_var_init(&__vsymtab_start, &__vsymtab_end);
|
|
#elif defined(_MSC_VER)
|
|
unsigned int *ptr_begin, *ptr_end;
|
|
|
|
ptr_begin = (unsigned int*)&__fsym_begin; ptr_begin += (sizeof(struct finsh_syscall)/sizeof(unsigned int));
|
|
while (*ptr_begin == 0) ptr_begin ++;
|
|
|
|
ptr_end = (unsigned int*) &__fsym_end; ptr_end --;
|
|
while (*ptr_end == 0) ptr_end --;
|
|
|
|
finsh_system_function_init(ptr_begin, ptr_end);
|
|
#endif
|
|
#endif
|
|
|
|
/* create or set shell structure */
|
|
#ifdef RT_USING_HEAP
|
|
shell = (struct finsh_shell*)rt_malloc(sizeof(struct finsh_shell));
|
|
if (shell == RT_NULL)
|
|
{
|
|
rt_kprintf("no memory for shell\n");
|
|
return -1;
|
|
}
|
|
#else
|
|
shell = &_shell;
|
|
#endif
|
|
|
|
memset(shell, 0, sizeof(struct finsh_shell));
|
|
|
|
rt_sem_init(&(shell->rx_sem), "shrx", 0, 0);
|
|
result = rt_thread_init(&finsh_thread,
|
|
"tshell",
|
|
finsh_thread_entry, RT_NULL,
|
|
&finsh_thread_stack[0], sizeof(finsh_thread_stack),
|
|
FINSH_THREAD_PRIORITY, 10);
|
|
|
|
if (result == RT_EOK)
|
|
rt_thread_startup(&finsh_thread);
|
|
return 0;
|
|
}
|
|
INIT_COMPONENT_EXPORT(finsh_system_init);
|
|
|