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#!/usr/bin/env python3
"""repl_drive.py - 用 pty 驱动 ligent 的 REPL,跑多轮对话并打印全部输出。
交互式行为(多轮上下文、/命令、行编辑)没法用管道测 —— 管道模式会把
整段 stdin 当成一个任务。所以这里开一个伪终端,逐条发送提示词。
用法:
repl_drive.py --bin ./ligent --base-url URL --prompt "第一轮" --prompt "第二轮"
"""
import argparse
import os
import pty
import re
import select
import sys
import time
def drive(binary, args, prompts, wait_per_prompt=2.0, quiet_after=1.5,
raw_keys=None):
pid, fd = pty.fork()
if pid == 0:
os.execv(binary, [binary] + args)
os._exit(127)
out = bytearray()
# 行编辑器每次回到提示符都会打开括号粘贴,所以这个序列就是"轮到用户输入了"
# 的信号。用它做同步点,比"等输出安静下来"可靠也快得多。
PROMPT_READY = b"\x1b[?2004h"
ready_seen = 0
tail = b""
def note(chunk):
# 标记可能被 read 切断,所以要连着上一块的尾巴一起找
nonlocal tail, ready_seen
buf = tail + chunk
ready_seen += buf.count(PROMPT_READY)
tail = buf[-(len(PROMPT_READY) - 1):]
def drain(timeout, idle=0.5, until_ready=False):
"""等到"回到提示符"(until_ready),或者输出彻底安静下来。
必须按标记等,不能只按安静等:等待动画每 250ms 画一帧,pty 永远
不会安静超过 idle,于是每次都要白等满 timeout —— 而 mock 其实几
毫秒就答复了。这是整个 e2e 从 126 秒掉下来的关键。
"""
want = ready_seen + 1 if until_ready else None
deadline = time.time() + timeout
last = time.time()
while time.time() < deadline:
r, _, _ = select.select([fd], [], [], 0.02)
if r:
try:
chunk = os.read(fd, 65536)
except OSError:
return False
if not chunk:
return False
out.extend(chunk)
note(chunk)
last = time.time()
if want is not None and ready_seen >= want:
return True
elif time.time() - last > idle:
return True
return True
drain(quiet_after, until_ready=True) # 等横幅画完、第一次回到提示符
if raw_keys is not None:
# 逐字节发送原始按键序列(用于测方向键等编辑行为)
for chunk, pause in raw_keys:
os.write(fd, chunk if isinstance(chunk, bytes) else chunk.encode("utf-8"))
drain(pause)
os.write(fd, b"/exit\n")
drain(0.8)
try:
os.close(fd)
except OSError:
pass
try:
os.waitpid(pid, 0)
except ChildProcessError:
pass
return re.sub(r"\x1b\[[0-9;]*m", "", out.decode("utf-8", "replace"))
for p in prompts:
os.write(fd, (p + "\n").encode("utf-8"))
if not drain(wait_per_prompt, until_ready=True):
break
os.write(fd, b"/exit\n")
drain(0.8)
try:
os.close(fd)
except OSError:
pass
try:
os.waitpid(pid, 0)
except ChildProcessError:
pass
text = out.decode("utf-8", "replace")
return re.sub(r"\x1b\[[0-9;]*m", "", text) # 去掉 ANSI 样式
def main():
ap = argparse.ArgumentParser()
ap.add_argument("--bin", default="./ligent")
ap.add_argument("--base-url", required=True)
ap.add_argument("--api-key", default="test")
ap.add_argument("--prompt", action="append", default=[])
ap.add_argument("--extra", action="append", default=[])
ap.add_argument("--wait", type=float, default=2.0)
ap.add_argument("--keys", action="append", default=[],
help="原始按键序列(支持 \\x1b 转义),按顺序发送")
a = ap.parse_args()
# --no-history:被驱动的实例不该往用户真实的 ligent.history 里写测试垃圾。
# 需要历史的调用方用 --extra=--history PATH(排在后面,会覆盖这一条)。
args = ["--api-key", a.api_key, "--base-url", a.base_url, "--no-color",
"--no-confirm", "--no-auto-save", "--no-history"] + a.extra
if a.keys:
raw = [(k.encode("utf-8").decode("unicode_escape").encode("latin-1"), 0.25)
for k in a.keys]
sys.stdout.write(drive(a.bin, args, [], a.wait, raw_keys=raw))
else:
sys.stdout.write(drive(a.bin, args, a.prompt, a.wait))
return 0
if __name__ == "__main__":
sys.exit(main())