//-------------------------------------------------------------------------------------
void TelnetHandler::onRecvInput()
{
while (buffer_.size() > 0)
{
int c = (unsigned char)buffer_.front();
buffer_.pop_front();
switch(c)
{
case '\r':
getingHistroyCmd_ = false;
if(buffer_.size() > 0)
{
int cc = (unsigned char)buffer_.front();
if(cc == '\n')
{
buffer_.pop_front();
if(!processCommand())
return;
}
}
break;
case 8: // 退格
sendDelChar();
checkAfterStr();
break;
case ' ': // 空格
default:
{
std::string s = "";
s += c;
command_.insert(currPos_, s);
currPos_++;
if(!checkUDLR())
{
checkAfterStr();
}
break;
}
};
}
}
//-------------------------------------------------------------------------------------
void TelnetHandler::onRecvInput(const char *buffer, int size)
{
int idx = 0;
while (idx < size)
{
char c = buffer[idx++];
switch(c)
{
case '\r':
getingHistroyCmd_ = false;
if (idx < size)
{
int cc = buffer[idx++];
if(cc == '\n')
{
if(!processCommand())
return;
}
}
break;
case 8: // 退格
if (currPos_ == 0)
{
resetStartPosition();
}
else
{
sendDelChar();
checkAfterStr();
}
break;
case 27: // vt100命令码: 0x1b
{
std::string s = "";
std::string vt100cmd(s + c);
bool shouldBeContinue = true;
while (shouldBeContinue && idx < size)
{
if (buffer[idx] == '\r')
break;
c = buffer[idx++];
vt100cmd.append(s + c);
switch (c)
{
case 'A': // 光标上移n行
case 'B': // 光标下移n行
case 'C': // 光标右移n列
case 'D': // 光标左移n列
case '~': // home、end等
shouldBeContinue = false;
break;
case 'm': // 颜色等属性或命令
case 'J': // 清屏
case 'K': // 清除从光标到行尾的内容
case 's': // 保存光标位置
case 'u': // 恢复光标位置
case 'l': // 隐藏光标
case 'h': // 显示光标
case 'H': // 设置光标位置
default:
break;
}
}
if (!checkUDLR(vt100cmd))
{
// 把不认识的命令原样输出,但会把命令符改成“^”
// 以避免客户端触发命令操作
vt100cmd[0] = '^';
command_.insert(currPos_, vt100cmd);
currPos_ += vt100cmd.length();
if (currPos_ == (int32)command_.length())
{
pEndPoint_->send(vt100cmd.c_str(), vt100cmd.size());
}
else
{
std::string s = command_.substr(currPos_ - vt100cmd.length(), command_.size() - currPos_ + vt100cmd.length());
s += fmt::format("\33[{}D", command_.size() - currPos_);
pEndPoint_->send(s.c_str(), s.size());
}
}
break;
}
case 0x7f: // delete
if (currPos_ < (int32)command_.length())
{
command_.erase(currPos_, 1);
pEndPoint_->send(TELNET_CMD_DEL, strlen(TELNET_CMD_DEL));
checkAfterStr();
}
break;
default:
{
std::string s = "";
s += c;
command_.insert(currPos_, s);
currPos_++;
checkAfterStr();
break;
}
};
}
}