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lua2rtt.c
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lua2rtt.c
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/*
* @File: lua2rtt.c
* @Author: liu2guang
* @Date: 2018-05-06 09:16:56
*
* @LICENSE: https://github.com/liu2guang/lua2rtt/blob/master/LICENSE.
*
* Change Logs:
* Date Author Notes
* 2018-05-06 liu2guang The first version.
* 2018-07-03 liu2guang Update lua5.1.2->lua5.3.4.
*/
#include "lua2rtt.h"
#include "shell.h"
static struct lua2rtt handle = {0};
static rt_uint8_t lua2rtt_getc(void)
{
rt_uint8_t ch = 0;
while(rt_device_read(handle.device, (-1), &ch, 1) != 1)
{
rt_sem_take(&(handle.rx_sem), RT_WAITING_FOREVER);
}
return ch;
}
static rt_err_t lua2rtt_rxcb(rt_device_t dev, rt_size_t size)
{
return rt_sem_release(&(handle.rx_sem));
}
static rt_bool_t lua2rtt_handle_history(const char *prompt)
{
rt_kprintf("\033[2K\r");
rt_kprintf("%s%s", prompt, handle.line);
return RT_FALSE;
}
static void lua2rtt_push_history(void)
{
if(handle.line_position > 0)
{
if(handle.history_count >= LUA2RTT_HISTORY_LINES)
{
if(rt_memcmp(&handle.lua_history[LUA2RTT_HISTORY_LINES-1], handle.line, LUA2RTT_CMD_SIZE))
{
int index;
for(index = 0; index < FINSH_HISTORY_LINES - 1; index ++)
{
rt_memcpy(&handle.lua_history[index][0], &handle.lua_history[index+1][0], LUA2RTT_CMD_SIZE);
}
rt_memset(&handle.lua_history[index][0], 0, LUA2RTT_CMD_SIZE);
rt_memcpy(&handle.lua_history[index][0], handle.line, handle.line_position);
handle.history_count = LUA2RTT_HISTORY_LINES;
}
}
else
{
if(handle.history_count == 0 || rt_memcmp(&handle.lua_history[handle.history_count-1], handle.line, LUA2RTT_CMD_SIZE))
{
handle.history_current = handle.history_count;
rt_memset(&handle.lua_history[handle.history_count][0], 0, LUA2RTT_CMD_SIZE);
rt_memcpy(&handle.lua_history[handle.history_count][0], handle.line, handle.line_position);
handle.history_count++;
}
}
}
handle.history_current = handle.history_count;
}
int lua2rtt_readline(const char *prompt, char *buffer, int buffer_size)
{
rt_uint8_t ch;
start:
rt_kprintf(prompt);
while(1)
{
ch = lua2rtt_getc();
if(ch == 0x1b)
{
handle.stat = LUA2RTT_WAIT_SPEC_KEY;
continue;
}
else if(handle.stat == LUA2RTT_WAIT_SPEC_KEY)
{
if(ch == 0x5b)
{
handle.stat = LUA2RTT_WAIT_FUNC_KEY;
continue;
}
handle.stat = LUA2RTT_WAIT_NORMAL;
}
else if(handle.stat == LUA2RTT_WAIT_FUNC_KEY)
{
handle.stat = LUA2RTT_WAIT_NORMAL;
if(ch == 0x41)
{
if(handle.history_current > 0)
{
handle.history_current--;
}
else
{
handle.history_current = 0;
continue;
}
rt_memcpy(handle.line, &handle.lua_history[handle.history_current][0], LUA2RTT_CMD_SIZE);
handle.line_curpos = handle.line_position = rt_strlen(handle.line);
lua2rtt_handle_history(prompt);
continue;
}
else if(ch == 0x42)
{
if(handle.history_current < (handle.history_count-1))
{
handle.history_current++;
}
else
{
if(handle.history_count != 0)
{
handle.history_current = handle.history_count-1;
}
else
{
continue;
}
}
rt_memcpy(handle.line, &handle.lua_history[handle.history_current][0], LUA2RTT_CMD_SIZE);
handle.line_curpos = handle.line_position = rt_strlen(handle.line);
lua2rtt_handle_history(prompt);
continue;
}
else if(ch == 0x44)
{
if(handle.line_curpos)
{
rt_kprintf("\b");
handle.line_curpos--;
}
continue;
}
else if(ch == 0x43)
{
if(handle.line_curpos < handle.line_position)
{
rt_kprintf("%c", handle.line[handle.line_curpos]);
handle.line_curpos++;
}
continue;
}
}
if(ch == '\0' || ch == 0xFF)
{
continue;
}
else if(ch == 0x7f || ch == 0x08)
{
if(handle.line_curpos == 0)
{
continue;
}
handle.line_curpos--;
handle.line_position--;
if(handle.line_position > handle.line_curpos)
{
rt_memmove(&handle.line[handle.line_curpos], &handle.line[handle.line_curpos+1],
handle.line_position-handle.line_curpos);
handle.line[handle.line_position] = 0;
rt_kprintf("\b%s \b", &handle.line[handle.line_curpos]);
int index;
for(index = (handle.line_curpos); index <= (handle.line_position); index++)
{
rt_kprintf("\b");
}
}
else
{
rt_kprintf("\b \b");
handle.line[handle.line_position] = 0;
}
continue;
}
else if(ch == '\r' || ch == '\n')
{
lua2rtt_push_history();
rt_kprintf("\n");
if(handle.line_position == 0)
{
goto start;
}
else
{
rt_uint8_t temp = handle.line_position;
rt_strncpy(buffer, handle.line, handle.line_position);
rt_memset(handle.line, 0x00, sizeof(handle.line));
buffer[handle.line_position] = 0;
handle.line_curpos = handle.line_position = 0;
return temp;
}
}
else if(ch == 0x04)
{
if(handle.line_position == 0)
{
return 0;
}
else
{
continue;
}
}
else if(ch == '\t')
{
continue;
}
else if(ch < 0x20 || ch >= 0x80)
{
continue;
}
if(handle.line_position >= LUA2RTT_CMD_SIZE)
{
continue;
}
if(handle.line_curpos < handle.line_position)
{
rt_memmove(&handle.line[handle.line_curpos+1], &handle.line[handle.line_curpos],
handle.line_position-handle.line_curpos);
handle.line[handle.line_curpos] = ch;
rt_kprintf("%s", &handle.line[handle.line_curpos]);
int index;
for(index = (handle.line_curpos); index < (handle.line_position); index++)
{
rt_kprintf("\b");
}
}
else
{
handle.line[handle.line_position] = ch;
rt_kprintf("%c", ch);
}
ch = 0;
handle.line_curpos++;
handle.line_position++;
}
}
static void lua2rtt_run(void *p)
{
const char *device_name = RT_CONSOLE_DEVICE_NAME;
handle.device = rt_device_find(device_name);
if(handle.device == RT_NULL)
{
LUA2RTT_DBG("The msh device find failed.\n");
return;
}
handle.rx_indicate = handle.device->rx_indicate;
rt_device_set_rx_indicate(handle.device, lua2rtt_rxcb);
if(handle.argc == 1)
{
rt_kprintf("\nPress CTRL+D to exit Lua.\n");
}
extern int lua_main(int argc, char **argv);
lua_main(handle.argc, handle.argv);
if(handle.argc > 1)
{
rt_free(handle.argv[1]);
}
rt_sem_detach(&(handle.rx_sem));
rt_device_set_rx_indicate(handle.device, handle.rx_indicate);
// rt_kprintf("Exit Lua interactive mode.\n");
rt_kprintf(FINSH_PROMPT);
}
static int lua2rtt(int argc, char **argv)
{
static rt_bool_t history_init = RT_FALSE;
if(history_init == RT_FALSE)
{
rt_memset(&handle, 0x00, sizeof(struct lua2rtt));
history_init = RT_TRUE;
}
else
{
handle.thread = RT_NULL;
handle.stat = LUA2RTT_WAIT_NORMAL;
handle.argc = 0;
handle.argv[0] = RT_NULL;
handle.argv[1] = RT_NULL;
handle.argv[2] = RT_NULL;
rt_memset(handle.line, 0x00, LUA2RTT_CMD_SIZE);
handle.line_position = 0;
handle.line_curpos = 0;
handle.device = RT_NULL;
handle.rx_indicate = RT_NULL;
}
rt_sem_init(&(handle.rx_sem), "lua2rtt_rxsem", 0, RT_IPC_FLAG_FIFO);
handle.argc = argc;
handle.argv[0] = "lua";
handle.argv[1] = RT_NULL;
handle.argv[2] = RT_NULL;
if(argc > 1)
{
rt_size_t len = rt_strlen(argv[1]);
handle.argv[1] = (char *)rt_malloc(len + 1);
rt_memset(handle.argv[1], 0x00, len + 1);
rt_strncpy(handle.argv[1], argv[1], len);
}
rt_uint8_t prio = rt_thread_self()->current_priority+1;
handle.thread = rt_thread_create("lua", lua2rtt_run, RT_NULL, LUA2RTT_THREAD_STACK_SIZE, prio, 10);
if(handle.thread == RT_NULL)
{
rt_sem_detach(&(handle.rx_sem));
LUA2RTT_DBG("The Lua interpreter thread create failed.\n");
return RT_ERROR;
}
rt_thread_startup(handle.thread);
return RT_EOK;
}
MSH_CMD_EXPORT_ALIAS(lua2rtt, lua, Execute Lua parser.);