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Code Issues Releases Wiki Activity

修复初始命令行切换问题 (#66)

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DaJiYuQia 2022-10-23 17:35:40 +08:00 committed by GitHub
parent a274d5a01d
commit e56c10c7b6
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1 changed files with 13 additions and 2 deletions
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15
user/apps/shell/shell.c
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@ -117,7 +117,7 @@ void clear_command(int count, char *buf)
* @brief 切换命令(写入到缓冲区)
*
* @param buf 缓冲区
* @param type 如果为1,就向下,如果为-1,就向上
* @param type 如果为1,就向上,如果为-1,就向下
*/
void change_command(char *buf, int type)
{
@ -126,7 +126,18 @@ void change_command(char *buf, int type)
if (current_command_index < 0)
current_command_index++;
if (current_command_index >= count_history - 1)
current_command_index = count_history - 2;
{
//初始只含一条空历史记录，需单独考虑
if(count_history == 1)
{
//防止出现多条空历史记录
if(current_command_index > 1)
current_command_index = 1;
}
else
current_command_index = count_history - 2;
}
strcpy(buf, history_commands[current_command_index]);
printf("%s", buf);
put_string(" ", COLOR_BLACK, COLOR_WHITE);