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rt-thread/finsh/shell.c

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/*
* File : shell.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2006-04-30 Bernard the first verion for FinSH
* 2006-05-08 Bernard change finsh thread stack to 2048
* 2006-06-03 Bernard add support for skyeye
* 2006-09-24 Bernard remove the code related with hardware
* 2010-01-18 Bernard fix down then up key bug.
* 2010-03-19 Bernard fix backspace issue and fix device read in shell.
* 2010-04-01 Bernard add prompt output when start and remove the empty history
*/
#include <rtthread.h>
#include <rthw.h>
#include "finsh.h"
/*
* Add by caoxl 2009-10-14
*
*/
#ifdef QEMU_CAOXL
#define memcpy(a,b,c) rt_memcpy(a,b,c)
extern char rt_serial_getc(void);
#endif
#define FINSH_USING_HISTORY
#if defined(__CC_ARM) /* ARMCC compiler */
#ifdef FINSH_USING_SYMTAB
extern int FSymTab$$Base;
extern int FSymTab$$Limit;
extern int VSymTab$$Base;
extern int VSymTab$$Limit;
#endif
#elif defined(__ICCARM__) /* for IAR compiler */
#ifdef FINSH_USING_SYMTAB
#pragma section="FSymTab"
#pragma section="VSymTab"
#endif
#elif defined(__GNUC__)
#ifdef FINSH_USING_SYMTAB
extern int __fsymtab_start;
extern int __fsymtab_end;
extern int __vsymtab_start;
extern int __vsymtab_end;
#endif
#endif
/* finsh thread */
struct rt_thread finsh_thread;
char finsh_thread_stack[2048];
struct rt_semaphore uart_sem;
rt_device_t finsh_device;
#ifdef FINSH_USING_HISTORY
enum input_stat
{
WAIT_NORMAL,
WAIT_SPEC_KEY,
WAIT_FUNC_KEY,
};
#ifndef FINSH_HISTORY_LINES
#define FINSH_HISTORY_LINES 5
#endif
#ifndef FINSH_CMD_SIZE
#define FINSH_CMD_SIZE 80
#endif
char finsh_cmd_history[FINSH_HISTORY_LINES][FINSH_CMD_SIZE];
rt_uint16_t finsh_history_count = 0;
#endif
#if !defined (RT_USING_NEWLIB) && !defined (RT_USING_MINILIBC)
void *memccpy(void *dst, const void *src, int c, size_t count)
{
char *a = dst;
const char *b = src;
while (count--)
{
*a++ = *b;
if (*b==c)
{
return (void *)a;
}
b++;
}
return 0;
}
int strcmp (const char *s1, const char *s2)
{
while (*s1 && *s1 == *s2) s1++, s2++;
return (*s1 - *s2);
}
#ifdef RT_USING_HEAP
char *strdup(const char *s)
{
size_t len = strlen(s) + 1;
char *tmp = (char *)rt_malloc(len);
if(!tmp) return NULL;
rt_memcpy(tmp, s, len);
return tmp;
}
#endif
#if !defined(__CC_ARM) && !defined(__ICCARM__) && !defined(__ICCM16C__)
int isalpha( int ch )
{
return (unsigned int)((ch | 0x20) - 'a') < 26u;
}
int atoi(const char* s)
{
long int v=0;
int sign=1;
while ( *s == ' ' || (unsigned int)(*s - 9) < 5u) s++;
switch (*s)
{
case '-': sign=-1;
case '+': ++s;
}
while ((unsigned int) (*s - '0') < 10u)
{
v=v*10+*s-'0'; ++s;
}
return sign==-1?-v:v;
}
int isprint(unsigned char ch)
{
return (unsigned int)(ch - ' ') < 127u - ' ';
}
#endif
#endif
static rt_err_t finsh_rx_ind(rt_device_t dev, rt_size_t size)
{
/* release semaphore to let finsh thread rx data */
rt_sem_release(&uart_sem);
return RT_EOK;
}
void finsh_set_device(const char* device_name)
{
rt_device_t dev = RT_NULL;
dev = rt_device_find(device_name);
if (dev != RT_NULL && rt_device_open(dev, RT_DEVICE_OFLAG_RDWR) == RT_EOK)
{
if (finsh_device != RT_NULL)
{
/* close old finsh device */
rt_device_close(finsh_device);
}
finsh_device = dev;
rt_device_set_rx_indicate(dev, finsh_rx_ind);
}
else
{
rt_kprintf("finsh: can not find device:%s\n", device_name);
}
}
void finsh_auto_complete(char* prefix)
{
extern void list_prefix(char* prefix);
rt_kprintf("\n");
list_prefix(prefix);
rt_kprintf("finsh>>%s", prefix);
}
extern const char* finsh_error_string_table[];
void finsh_run_line(struct finsh_parser *parser, const char* line)
{
rt_kprintf("\n");
finsh_parser_run(parser, (unsigned char*)line);
/* compile node root */
if (finsh_errno() == 0)
{
finsh_compiler_run(parser->root);
}
else
{
rt_kprintf("%s\n", finsh_error_string(finsh_errno()));
}
/* run virtual machine */
if (finsh_errno() == 0)
{
char ch;
finsh_vm_run();
ch = (unsigned char)finsh_stack_bottom();
if (ch > 0x20 && ch < 0x7e)
{
rt_kprintf("\t'%c', %d, 0x%08x\n",
(unsigned char)finsh_stack_bottom(),
(unsigned int)finsh_stack_bottom(),
(unsigned int)finsh_stack_bottom());
}
else
{
rt_kprintf("\t%d, 0x%08x\n",
(unsigned int)finsh_stack_bottom(),
(unsigned int)finsh_stack_bottom());
}
}
finsh_flush(parser);
}
void finsh_thread_entry(void* parameter)
{
struct finsh_parser parser;
char line[256], ch;
int pos ;
#ifdef FINSH_USING_HISTORY
enum input_stat stat;
unsigned short current_history, use_history;
#endif
pos = 0;
stat = WAIT_NORMAL;
current_history = 0;
use_history = 0;
memset(line, 0, sizeof(line));
finsh_init(&parser);
rt_kprintf("finsh>>");
while (1)
{
if (rt_sem_take(&uart_sem, RT_WAITING_FOREVER) != RT_EOK) continue;
/* read one character from device */
while (rt_device_read(finsh_device, 0, &ch, 1) == 1)
{
#ifdef FINSH_USING_HISTORY
/*
* handle up and down key
* up key : 0x1b 0x5b 0x41
* down key: 0x1b 0x5b 0x42
*/
if (ch == 0x1b)
{
stat = WAIT_SPEC_KEY;
continue;
}
if ((stat == WAIT_SPEC_KEY) && (ch == 0x5b))
{
if (ch == 0x5b)
{
stat = WAIT_FUNC_KEY;
continue;
}
stat = WAIT_NORMAL;
}
if (stat == WAIT_FUNC_KEY)
{
stat = WAIT_NORMAL;
if (ch == 0x41) /* up key */
{
/* prev history */
if (current_history > 0)current_history --;
else
{
current_history = 0;
continue;
}
/* copy the history command */
memcpy(line, &finsh_cmd_history[current_history][0],
FINSH_CMD_SIZE);
pos = strlen(line);
use_history = 1;
}
else if (ch == 0x42) /* down key */
{
/* next history */
if (current_history < finsh_history_count - 1)
current_history ++;
else
{
/* set to the end of history */
if (finsh_history_count != 0)
{
current_history = finsh_history_count - 1;
}
else continue;
}
memcpy(line, &finsh_cmd_history[current_history][0],
FINSH_CMD_SIZE);
pos = strlen(line);
use_history = 1;
}
if (use_history)
{
rt_kprintf("\033[2K\r");
rt_kprintf("finsh>>%s", line);
continue;
}
}
#endif
/* handle tab key */
if (ch == '\t')
{
/* auto complete */
finsh_auto_complete(&line[0]);
/* re-calculate position */
pos = strlen(line);
continue;
}
/* handle backspace key */
else if (ch == 0x7f || ch == 0x08)
{
if (pos != 0)
{
rt_kprintf("%c %c", ch, ch);
}
if (pos <= 0) pos = 0;
else pos --;
line[pos] = 0;
continue;
}
/* handle end of line, break */
else if (ch == 0x0d || ch == 0x0a)
{
/* change to ';' and break */
line[pos] = ';';
#ifdef FINSH_USING_HISTORY
if ((use_history == 0) && (pos != 0))
{
/* push history */
if (finsh_history_count >= FINSH_HISTORY_LINES)
{
/* move history */
int index;
for (index = 0; index < FINSH_HISTORY_LINES - 1; index ++)
{
memcpy(&finsh_cmd_history[index][0],
&finsh_cmd_history[index + 1][0], FINSH_CMD_SIZE);
}
memset(&finsh_cmd_history[index][0], 0, FINSH_CMD_SIZE);
memcpy(&finsh_cmd_history[index][0], line, pos);
/* it's the maximum history */
finsh_history_count = FINSH_HISTORY_LINES;
}
else
{
memset(&finsh_cmd_history[finsh_history_count][0], 0, FINSH_CMD_SIZE);
memcpy(&finsh_cmd_history[finsh_history_count][0], line, pos);
/* increase count and set current history position */
finsh_history_count ++;
}
}
current_history = finsh_history_count;
#endif
if (pos != 0) finsh_run_line(&parser, line);
else rt_kprintf("\n");
rt_kprintf("finsh>>");
memset(line, 0, sizeof(line));
pos = 0;
break;
}
/* it's a large line, discard it */
if (pos >= 256) pos = 0;
/* normal character */
line[pos] = ch; ch = 0;
rt_kprintf("%c", line[pos++]);
use_history = 0; /* it's a new command */
} /* end of device read */
}
}
void finsh_system_function_init(void* begin, void* end)
{
_syscall_table_begin = (struct finsh_syscall*) begin;
_syscall_table_end = (struct finsh_syscall*) end;
}
void finsh_system_var_init(void* begin, void* end)
{
_sysvar_table_begin = (struct finsh_sysvar*) begin;
_sysvar_table_end = (struct finsh_sysvar*) end;
}
/* init finsh */
void finsh_system_init(void)
{
rt_sem_init(&uart_sem, "uart", 0, 0);
#ifdef FINSH_USING_SYMTAB
#ifdef __CC_ARM /* ARM C Compiler */
finsh_system_function_init(&FSymTab$$Base, &FSymTab$$Limit);
finsh_system_var_init(&VSymTab$$Base, &VSymTab$$Limit);
#elif defined (__ICCARM__) /* 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__) /* GNU GCC Compiler */
finsh_system_function_init(&__fsymtab_start, &__fsymtab_end);
finsh_system_var_init(&__vsymtab_start, &__vsymtab_start);
#endif
#endif
#if RT_THREAD_PRIORITY_MAX == 8
rt_thread_init(&finsh_thread,
"tshell",
finsh_thread_entry, RT_NULL,
&finsh_thread_stack[0], sizeof(finsh_thread_stack),
5, 10);
#else
rt_thread_init(&finsh_thread,
"tshell",
finsh_thread_entry, RT_NULL,
&finsh_thread_stack[0], sizeof(finsh_thread_stack),
20, 10);
#endif
rt_thread_startup(&finsh_thread);
}
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