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xiaoli-cli/plugins/terminal.py
T
xiaoli-cli bot 5ea19b75ae refactor: terminal 插件重写 v2 - 极简接口
新设计: AI 的虚拟键盘和屏幕
- open: 打开终端
- type: 打字
- key: 按键 (enter/tab/ctrl+c/方向键/f1-f12等)
- read: 看整个屏幕
- last [N]: 只看最近N行(默认20,避免上下文爆炸)
- wait: 等待输出

从600行精简到250行,接口从12个减到8个
2026-06-23 09:14:15 +00:00

412 lines
14 KiB
Python
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"""
终端模拟器 v2 — AI 的虚拟键盘和屏幕
=====================================
设计理念:AI 面前有一个终端,它能做的事就是:
1. 打字(type)
2. 按键(key)
3. 看屏幕(read)
就这么简单。
"""
import os
import re
import sys
import time
import uuid
import json
import threading
import subprocess
import platform
from collections import deque
_IS_WIN = platform.system() == "Windows"
class Terminal:
"""一个终端 = 一个子进程 + 一个屏幕缓冲"""
def __init__(self, sid: str, shell: str = "", cwd: str = ""):
self.id = sid
self.shell = shell or self._default_shell()
self.cwd = cwd or os.getcwd()
self._proc = None
self._screen = deque(maxlen=5000) # 屏幕行
self._raw = "" # 未处理原始输出
self._lock = threading.Lock()
self._start()
@staticmethod
def _default_shell():
if _IS_WIN:
return os.environ.get("COMSPEC", "cmd.exe")
for s in ["/bin/bash", "/bin/sh"]:
if os.path.isfile(s):
return s
return "/bin/sh"
def _start(self):
env = {**os.environ, "TERM": "dumb", "NO_COLOR": "1",
"PYTHONUNBUFFERED": "1", "PROMPT_COMMAND": ""}
if not _IS_WIN:
base = os.path.basename(self.shell)
if "bash" in base:
env["PS1"] = ""
args = [self.shell, "--norc", "--noprofile"]
elif "python" in base:
args = [self.shell, "-i"]
else:
args = [self.shell]
flags = 0
else:
args = [self.shell, "/K", "chcp 65001 >nul"]
flags = subprocess.CREATE_NO_WINDOW
self._proc = subprocess.Popen(
args, stdin=subprocess.PIPE, stdout=subprocess.PIPE,
stderr=subprocess.STDOUT, bufsize=0, cwd=self.cwd,
env=env, creationflags=flags if _IS_WIN else 0,
)
threading.Thread(target=self._reader, daemon=True).start()
time.sleep(0.3)
def _reader(self):
fd = self._proc.stdout.fileno()
while self._proc.poll() is None:
try:
chunk = os.read(fd, 4096)
if not chunk:
break
text = chunk.decode("utf-8", errors="replace")
with self._lock:
self._raw += text
for line in text.split("\n"):
self._screen.append(line)
except (OSError, ValueError):
break
def alive(self):
return self._proc and self._proc.poll() is None
# ── 核心操作:打字 ──
def type(self, text: str):
"""像人一样打字,每个字符发到 stdin"""
if not self.alive():
return
try:
self._proc.stdin.write(text.encode("utf-8"))
self._proc.stdin.flush()
except (OSError, BrokenPipeError):
pass
# ── 核心操作:按键 ──
_KEYS = {
"enter": "\n", "return": "\n",
"tab": "\t",
"backspace": "\x7f", "bs": "\x7f",
"esc": "\x1b", "escape": "\x1b",
"space": " ",
"delete": "\x1b[3~", "del": "\x1b[3~",
"insert": "\x1b[2~",
"up": "\x1b[A", "down": "\x1b[B",
"right": "\x1b[C", "left": "\x1b[D",
"home": "\x1b[H", "end": "\x1b[F",
"pageup": "\x1b[5~", "pagedown": "\x1b[6~",
"f1": "\x1bOP", "f2": "\x1bOQ", "f3": "\x1bOR", "f4": "\x1bOS",
"f5": "\x1b[15~", "f6": "\x1b[17~", "f7": "\x1b[18~", "f8": "\x1b[19~",
"f9": "\x1b[20~", "f10": "\x1b[21~", "f11": "\x1b[23~", "f12": "\x1b[24~",
}
# Ctrl+ 字母映射
_CTRL = {chr(i): chr(i - 64) for i in range(65, 91)} # A-Z → \x01-\x1a
def key(self, name: str):
"""
按一个键。
支持: enter, tab, esc, up, down, left, right,
ctrl+c, ctrl+d, ctrl+z, ctrl+l, ctrl+a, ctrl+e,
f1-f12, backspace, delete, home, end, space, ...
"""
if not self.alive():
return
name = name.lower().strip()
# Ctrl+ 组合
if name.startswith("ctrl+"):
letter = name[5:]
seq = self._CTRL.get(letter.upper())
if seq:
self._send_raw(seq)
return
# 普通按键
seq = self._KEYS.get(name)
if seq:
self._send_raw(seq)
elif len(name) == 1:
# 单个字符直接发
self._send_raw(name)
def combo(self, *keys):
"""
组合键,如 combo("ctrl", "shift", "t")
目前主要支持 ctrl+单字母
"""
parts = [k.lower() for k in keys]
if "ctrl" in parts and len(parts) == 2:
other = [k for k in parts if k != "ctrl"][0]
self.key(f"ctrl+{other}")
elif "alt" in parts:
# Alt+key → ESC + key
other = [k for k in parts if k != "alt"][0]
self._send_raw("\x1b" + other)
elif "shift" in parts:
other = [k for k in parts if k != "shift"][0]
self._send_raw(other.upper() if len(other) == 1 else other)
def _send_raw(self, data: str):
try:
self._proc.stdin.write(data.encode("utf-8"))
self._proc.stdin.flush()
except (OSError, BrokenPipeError):
pass
# ── 核心操作:看屏幕 ──
def read(self, lines: int = 0) -> str:
"""读取屏幕当前内容"""
with self._lock:
if lines > 0:
buf = list(self._screen)[-lines:]
else:
buf = list(self._screen)
return self._clean("\n".join(buf))
def read_new(self, timeout: float = 1) -> str:
"""等待并读取新输出"""
with self._lock:
self._raw = ""
time.sleep(timeout)
with self._lock:
out = self._raw
self._raw = ""
return self._clean(out)
def wait(self, seconds: float = 1):
"""等待,让终端输出完"""
time.sleep(seconds)
def _clean(self, text: str) -> str:
if not text:
return ""
text = re.sub(r'\x1b\[[0-9;]*[a-zA-Z]', '', text)
text = re.sub(r'\x1b\][^\x07]*\x07', '', text)
text = re.sub(r'[\x00-\x08\x0b\x0c\x0e-\x1f]', '', text)
text = text.replace('\r\n', '\n').replace('\r', '\n')
text = re.sub(r'\n{4,}', '\n\n\n', text)
return text.strip()
def close(self):
try:
if self._proc and self._proc.poll() is None:
self._send_raw("exit\n")
time.sleep(0.2)
if self._proc.poll() is None:
self._proc.terminate()
try:
self._proc.wait(timeout=3)
except subprocess.TimeoutExpired:
self._proc.kill()
except Exception:
pass
self._proc = None
# ═══════════════════════════════════════════════════════════════
# Liugin 插件
# ═══════════════════════════════════════════════════════════════
class Liugin:
"""终端模拟器 v2 — AI 的虚拟键盘和屏幕"""
def __init__(self):
self.cli = None
self._terminals: dict = {}
self._current = "main"
def set_cli(self, cli):
self.cli = cli
def get_tool_info(self):
return {
"name": "terminal",
"description": "终端模拟器 — AI 的虚拟键盘和屏幕。"
"启动终端、打字、按键、看屏幕,像人一样操作。",
"keywords": [
"终端", "terminal", "shell", "键盘", "按键", "打字",
"屏幕", "交互", "REPL", "cmd", "bash", "python",
],
"usage": (
"terminal <操作> [参数]\n\n"
" open [shell] - 打开终端,返回初始画面\n"
" type <文字> - 打字(发送到终端)\n"
" key <按键名> - 按一个键(enter/tab/ctrl+c/方向键...)\n"
" read [行数] - 看屏幕内容\n"
" last [行数] - 看最近N行(默认20,避免上下文爆炸)\n"
" wait [秒] - 等待输出完毕\n"
" switch <ID> - 切换终端\n"
" list - 列出所有终端\n"
" close [ID] - 关闭终端\n\n"
"按键: enter tab esc space backspace delete\n"
" up down left right home end\n"
" ctrl+c ctrl+d ctrl+z ctrl+l ctrl+a ctrl+e\n"
" f1-f12\n\n"
"示例:\n"
" terminal open - 打开 bash\n"
" terminal open python3 - 打开 Python\n"
" terminal type ls -la - 打字\n"
" terminal key enter - 按回车\n"
" terminal read - 看屏幕\n"
" terminal key ctrl+c - 中断"
),
}
def get_mcp_definition(self):
return {
"name": "terminal",
"description": "终端模拟器 — AI 的虚拟键盘和屏幕",
"inputSchema": {
"type": "object",
"properties": {
"action": {
"type": "string",
"enum": ["open", "type", "key", "read", "last", "wait",
"switch", "list", "close"],
},
"text": {"type": "string", "description": "要打的字 / shell路径"},
"key": {"type": "string", "description": "按键名"},
"last": {"type": "integer", "description": "最近N行"},
"seconds": {"type": "number", "description": "等待秒数"},
"session": {"type": "string", "description": "终端 ID"},
},
"required": ["action"],
},
}
def convert_mcp_args(self, arguments):
a = arguments.get("action", "")
parts = [a]
for k in ["text", "key", "lines", "seconds", "session"]:
v = arguments.get(k)
if v is not None:
parts.append(str(v))
return " ".join(parts)
def handle(self, args: str) -> str:
parts = args.strip().split(maxsplit=1)
if not parts:
return self._help()
action = parts[0].lower()
rest = parts[1].strip() if len(parts) > 1 else ""
# 支持 `read 20` 省写
if rest.isdigit() and action in ('read', 'last'):
action, rest = 'last', rest
h = {
"open": self._h_open, "type": self._h_type,
"key": self._h_key, "read": self._h_read,
"last": self._h_last, "wait": self._h_wait,
"switch": self._h_switch, "list": self._h_list,
"close": self._h_close,
}.get(action)
if not h:
return f"不支持 '{action}'\n{self._help()}"
try:
return h(rest)
except Exception as e:
return f"终端错误: {e}"
def _help(self):
return (
"terminal open [shell] - 打开终端\n"
"terminal type <文字> - 打字\n"
"terminal key <按键> - 按键\n"
"terminal read [行数] - 看屏幕\n"
"terminal wait [秒] - 等待\n"
"terminal list - 列出终端\n"
"terminal close - 关闭"
)
def _get(self, sid: str = "") -> Terminal:
sid = sid or self._current
if sid not in self._terminals:
self._terminals[sid] = Terminal(sid)
return self._terminals[sid]
def _h_open(self, rest: str) -> str:
sid = f"s{len(self._terminals) + 1}" if self._terminals else "main"
t = Terminal(sid, shell=rest.strip())
self._terminals[sid] = t
self._current = sid
screen = t.read()
return f"✓ 终端 {sid} 已打开\n{screen}"
def _h_type(self, rest: str) -> str:
if not rest:
return "请提供要打的字"
t = self._get()
t.type(rest)
t.wait(0.3)
return f"← 打字: {rest}"
def _h_key(self, rest: str) -> str:
if not rest:
return "请提供按键名"
t = self._get()
t.key(rest)
t.wait(0.3)
return f"← 按键: {rest}"
def _h_read(self, rest: str) -> str:
t = self._get()
return t.read() or "(屏幕为空)"
def _h_last(self, rest: str) -> str:
t = self._get()
n = int(rest) if rest.strip().isdigit() else 20
return t.read(n) or "(屏幕为空)"
def _h_wait(self, rest: str) -> str:
secs = float(rest) if rest.strip() else 1.0
t = self._get()
t.wait(secs)
return t.read()
def _h_switch(self, rest: str) -> str:
sid = rest.strip()
if sid not in self._terminals:
return f"终端 '{sid}' 不存在"
self._current = sid
return f"✓ 切换到 {sid}"
def _h_list(self, _: str) -> str:
if not self._terminals:
return "无终端"
lines = []
for sid, t in self._terminals.items():
cur = " ← 当前" if sid == self._current else ""
dot = "●" if t.alive() else "○"
lines.append(f" {dot} {sid} [{t.shell}]{cur}")
return "\n".join(lines)
def _h_close(self, rest: str) -> str:
sid = rest.strip() or self._current
if sid not in self._terminals:
return f"终端 '{sid}' 不存在"
self._terminals[sid].close()
del self._terminals[sid]
if self._current == sid:
self._current = next(iter(self._terminals), "main")
return f"✓ 终端 {sid} 已关闭"