522 lines
12 KiB
C
522 lines
12 KiB
C
/*
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* File : shell.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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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 verion 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 <rtthread.h>
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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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/* 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 (RT_USING_NEWLIB) && !defined (RT_USING_MINILIBC)
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int strcmp (const char *s1, const char *s2)
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{
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while (*s1 && *s1 == *s2) s1++, s2++;
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return (*s1 - *s2);
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}
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#ifdef RT_USING_HEAP
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char *strdup(const char *s)
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{
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size_t len = strlen(s) + 1;
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char *tmp = (char *)rt_malloc(len);
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if(!tmp) return NULL;
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rt_memcpy(tmp, s, len);
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return tmp;
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}
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#endif
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#if !defined(__CC_ARM) && !defined(__IAR_SYSTEMS_ICC__)
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int isalpha( int ch )
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{
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return (unsigned int)((ch | 0x20) - 'a') < 26u;
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}
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int atoi(const char* s)
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{
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long int v=0;
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int sign=1;
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while ( *s == ' ' || (unsigned int)(*s - 9) < 5u) s++;
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switch (*s)
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{
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case '-': sign=-1;
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case '+': ++s;
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}
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while ((unsigned int) (*s - '0') < 10u)
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{
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v=v*10+*s-'0'; ++s;
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}
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return sign==-1?-v:v;
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}
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int isprint(unsigned char ch)
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{
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return (unsigned int)(ch - ' ') < 127u - ' ';
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}
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#endif
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#endif
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#if defined(RT_USING_DFS) && defined(DFS_USING_WORKDIR)
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#include <dfs_posix.h>
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const char* finsh_get_prompt()
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{
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#define _PROMPT "finsh "
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static char finsh_prompt[RT_CONSOLEBUF_SIZE + 1] = {_PROMPT};
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/* get current working directory */
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getcwd(&finsh_prompt[6], RT_CONSOLEBUF_SIZE - 8);
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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 && rt_device_open(dev, RT_DEVICE_OFLAG_RDWR) == 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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}
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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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else
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{
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rt_kprintf("finsh: can not find device:%s\n", device_name);
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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 = 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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void finsh_auto_complete(char* prefix)
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{
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extern void list_prefix(char* prefix);
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rt_kprintf("\n");
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list_prefix(prefix);
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rt_kprintf("%s%s", FINSH_PROMPT, prefix);
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}
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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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#ifdef FINSH_USING_HISTORY
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rt_bool_t finsh_handle_history(struct finsh_shell* shell, char ch)
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{
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/*
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* handle up and down key
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* up key : 0x1b 0x5b 0x41
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* down key: 0x1b 0x5b 0x42
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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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return RT_TRUE;
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}
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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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return RT_TRUE;
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}
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shell->stat = WAIT_NORMAL;
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return RT_FALSE;
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}
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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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/* prev history */
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if (shell->current_history > 0)shell->current_history --;
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else
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{
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shell->current_history = 0;
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return RT_TRUE;
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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_position = strlen(shell->line);
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shell->use_history = 1;
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}
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else if (ch == 0x42) /* down key */
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{
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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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{
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shell->current_history = shell->history_count - 1;
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}
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else return RT_TRUE;
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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_position = strlen(shell->line);
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shell->use_history = 1;
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}
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if (shell->use_history)
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{
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rt_kprintf("\033[2K\r");
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rt_kprintf("%s%s", FINSH_PROMPT, shell->line);
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return RT_TRUE;;
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}
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}
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return RT_FALSE;
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}
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void finsh_push_history(struct finsh_shell* shell)
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{
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if ((shell->use_history == 0) && (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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/* test: for efm32 low power mode */
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emu_all_disable();
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/* normal is echo mode */
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shell->echo_mode = 1;
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finsh_init(&shell->parser);
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rt_kprintf(FINSH_PROMPT);
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while (1)
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{
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/* test: for efm32 low power mode */
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emu_em2_enable();
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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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/* test: for efm32 low power mode */
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emu_em2_disable();
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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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/* handle history key */
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#ifdef FINSH_USING_HISTORY
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if (finsh_handle_history(shell, ch) == RT_TRUE) continue;
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#endif
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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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/* auto complete */
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finsh_auto_complete(&shell->line[0]);
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/* re-calculate position */
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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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if (shell->line_position != 0)
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{
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rt_kprintf("%c %c", ch, ch);
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}
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if (shell->line_position <= 0) shell->line_position = 0;
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else shell->line_position --;
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shell->line[shell->line_position] = 0;
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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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/* change to ';' and break */
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shell->line[shell->line_position] = ';';
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#ifdef FINSH_USING_HISTORY
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finsh_push_history(shell);
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#endif
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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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rt_kprintf(FINSH_PROMPT);
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memset(shell->line, 0, sizeof(shell->line));
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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) shell->line_position = 0;
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/* normal character */
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shell->line[shell->line_position] = ch; ch = 0;
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if (shell->echo_mode) rt_kprintf("%c", shell->line[shell->line_position]);
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shell->line_position ++;
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shell->use_history = 0; /* it's a new command */
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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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}
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#if defined(__ICCARM__) /* for IAR compiler */
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#ifdef FINSH_USING_SYMTAB
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#pragma section="FSymTab"
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#pragma section="VSymTab"
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#endif
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#endif
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/*
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* @ingroup finsh
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*
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* This function will initialize finsh shell
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*/
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void finsh_system_init(void)
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{
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rt_err_t result;
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#ifdef FINSH_USING_SYMTAB
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#ifdef __CC_ARM /* ARM C Compiler */
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extern const int FSymTab$$Base;
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extern const int FSymTab$$Limit;
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extern const int VSymTab$$Base;
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extern const int VSymTab$$Limit;
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finsh_system_function_init(&FSymTab$$Base, &FSymTab$$Limit);
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finsh_system_var_init(&VSymTab$$Base, &VSymTab$$Limit);
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#elif defined (__ICCARM__) /* for IAR Compiler */
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finsh_system_function_init(__section_begin("FSymTab"),
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__section_end("FSymTab"));
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finsh_system_var_init(__section_begin("VSymTab"),
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__section_end("VSymTab"));
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#elif defined (__GNUC__) /* GNU GCC Compiler */
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extern const int __fsymtab_start;
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extern const int __fsymtab_end;
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extern const int __vsymtab_start;
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extern const int __vsymtab_end;
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finsh_system_function_init(&__fsymtab_start, &__fsymtab_end);
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finsh_system_var_init(&__vsymtab_start, &__vsymtab_end);
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#endif
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#endif
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/* create or set shell structure */
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#ifdef RT_USING_HEAP
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shell = (struct finsh_shell*)rt_malloc(sizeof(struct finsh_shell));
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#else
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shell = &_shell;
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#endif
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if (shell == RT_NULL)
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{
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rt_kprintf("no memory for shell\n");
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return;
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}
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memset(shell, 0, sizeof(struct finsh_shell));
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rt_sem_init(&(shell->rx_sem), "shrx", 0, 0);
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result = rt_thread_init(&finsh_thread,
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"tshell",
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finsh_thread_entry, RT_NULL,
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&finsh_thread_stack[0], sizeof(finsh_thread_stack),
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FINSH_THREAD_PRIORITY, 10);
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if (result == RT_EOK)
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rt_thread_startup(&finsh_thread);
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}
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