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fix backspace issue and fix device read issue in shell.

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@516 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong 2010-03-19 08:32:54 +00:00
parent b4bcc7b50d
commit cb713bc99c
1 changed files with 170 additions and 188 deletions
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164
finsh/shell.c
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@ -14,6 +14,7 @@
* 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.
*/
#include <rtthread.h>
@ -57,9 +58,7 @@ extern char rt_serial_getc(void);
struct rt_thread finsh_thread;
char finsh_thread_stack[2048];
struct rt_semaphore uart_sem;
#ifdef RT_USING_DEVICE
rt_device_t finsh_device;
#endif
#ifdef FINSH_USING_HISTORY
enum input_stat
{
@ -148,7 +147,6 @@ int isprint(unsigned char ch)
#endif
#endif
#ifdef RT_USING_DEVICE
static rt_err_t finsh_rx_ind(rt_device_t dev, rt_size_t size)
{
/* release semaphore to let finsh thread rx data */
@ -178,12 +176,6 @@ void finsh_set_device(char* device_name)
rt_kprintf("finsh: can not find device:%s\n", device_name);
}
}
#else
void finsh_notify()
{
rt_sem_release(&uart_sem);
}
#endif
void finsh_auto_complete(char* prefix)
{
@ -194,10 +186,50 @@ void finsh_auto_complete(char* prefix)
rt_kprintf("finsh>>%s", prefix);
}
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];
char line[256], ch;
int pos ;
#ifdef FINSH_USING_HISTORY
enum input_stat stat;
@ -207,30 +239,16 @@ void finsh_thread_entry(void* parameter)
stat = WAIT_NORMAL;
current_history = 0;
use_history = 0;
memset(line, 0, sizeof(line));
finsh_init(&parser);
while (1)
{
rt_kprintf("finsh>>");
if (rt_sem_take(&uart_sem, RT_WAITING_FOREVER) != RT_EOK) continue;
memset(line, 0, sizeof(line));
pos = 0;
while (1)
{
if (rt_sem_take(&uart_sem, -1) == RT_EOK)
{
/* read one character from serial */
char ch;
#ifndef RT_USING_DEVICE
ch = rt_serial_getc();
if (ch != 0)
#else
rt_err_t rx_result;
rx_result = rt_device_read(finsh_device, 0, &ch, 1);
if (ch != 0 && rx_result == 1)
#endif
/* read one character from device */
while (rt_device_read(finsh_device, 0, &ch, 1) == 1)
{
#ifdef FINSH_USING_HISTORY
/*
@ -303,9 +321,8 @@ void finsh_thread_entry(void* parameter)
}
}
#endif
/*
* handle tab key
*/
/* handle tab key */
if (ch == '\t')
{
/* auto complete */
@ -314,42 +331,23 @@ void finsh_thread_entry(void* parameter)
pos = strlen(line);
continue;
}
/*
* handle backspace key
*/
if (ch == 0x7f || ch == 0x08)
/* handle backspace key */
else if (ch == 0x7f || ch == 0x08)
{
if (pos != 0)rt_kprintf("%c", ch);
line[pos--] = 0;
if (pos < 0) pos = 0;
if (pos != 0)
{
rt_kprintf("%c %c", ch, ch);
}
if (pos <= 0) pos = 0;
else pos --;
line[pos] = 0;
continue;
}
if (pos >= 256) /* it's a large line, discard it */
pos = 0;
line[pos] = ch;
rt_kprintf("%c", line[pos]);
/* if it's the end of line, break */
if (line[pos] == 0xd || line[pos] == 0xa)
/* handle end of line, break */
else if (ch == 0x0d || ch == 0x0a)
{
/* change to ';' and break */
line[pos] = ';';
break;
}
else use_history = 0; /* not "\n", it's a new command */
pos ++;
}
}
}
if (pos == 0)
{
rt_kprintf("\n");
continue;
}
#ifdef FINSH_USING_HISTORY
if (use_history == 0)
@ -382,40 +380,24 @@ void finsh_thread_entry(void* parameter)
current_history = finsh_history_count;
#endif
rt_kprintf("\n");
finsh_parser_run(&parser, (unsigned char*)&line[0]);
if (pos != 0) finsh_run_line(&parser, line);
else rt_kprintf("\n");
/* compile node root */
if (finsh_errno() == 0)
{
finsh_compiler_run(parser.root);
}
else
{
rt_kprintf("%s\n", finsh_error_string(finsh_errno()));
rt_kprintf("finsh>>");
memset(line, 0, sizeof(line));
pos = 0;
break;
}
/* run virtual machine */
if (finsh_errno() == 0)
{
finsh_vm_run();
/* it's a large line, discard it */
if (pos >= 256) pos = 0;
if (isprint((unsigned char)finsh_stack_bottom()))
{
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%04x\n",
(unsigned int)finsh_stack_bottom(),
(unsigned int)finsh_stack_bottom());
}
}
finsh_flush(&parser);
/* normal character */
line[pos] = ch; ch = 0;
rt_kprintf("%c", line[pos++]);
use_history = 0; /* it's a new command */
} /* end of device read */
}
}