615 lines
27 KiB
Python
615 lines
27 KiB
Python
# ========== api_client.py ==========
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# utils/api_client.py - DeepSeek API 客户端（支持Web模式）- 简化版
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import httpx
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import json
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import asyncio
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from typing import List, Dict, Optional, AsyncGenerator
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try:
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from config import API_BASE_URL, API_KEY, MODEL_ID, OUTPUT_FORMATS, DEFAULT_RESPONSE_MAX_TOKENS
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except ImportError:
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import sys
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from pathlib import Path
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project_root = Path(__file__).resolve().parents[1]
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if str(project_root) not in sys.path:
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sys.path.insert(0, str(project_root))
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from config import API_BASE_URL, API_KEY, MODEL_ID, OUTPUT_FORMATS, DEFAULT_RESPONSE_MAX_TOKENS
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class DeepSeekClient:
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def __init__(self, thinking_mode: bool = True, web_mode: bool = False):
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self.api_base_url = API_BASE_URL
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self.api_key = API_KEY
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self.model_id = MODEL_ID
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self.thinking_mode = thinking_mode # True=智能思考模式, False=快速模式
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self.web_mode = web_mode # Web模式标志，用于禁用print输出
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self.headers = {
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"Authorization": f"Bearer {self.api_key}",
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"Content-Type": "application/json"
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}
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# 每个任务的独立状态
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self.current_task_first_call = True # 当前任务是否是第一次调用
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self.current_task_thinking = "" # 当前任务的思考内容
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def _print(self, message: str, end: str = "\n", flush: bool = False):
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"""安全的打印函数，在Web模式下不输出"""
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if not self.web_mode:
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print(message, end=end, flush=flush)
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def _format_read_file_result(self, data: Dict) -> str:
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"""根据读取模式格式化 read_file 工具结果。"""
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if not isinstance(data, dict):
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return json.dumps(data, ensure_ascii=False)
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if not data.get("success"):
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return json.dumps(data, ensure_ascii=False)
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read_type = data.get("type", "read")
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truncated_note = "（内容已截断）" if data.get("truncated") else ""
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path = data.get("path", "未知路径")
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max_chars = data.get("max_chars")
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max_note = f"(max_chars={max_chars})" if max_chars else ""
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if read_type == "read":
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line_start = data.get("line_start")
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line_end = data.get("line_end")
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char_count = data.get("char_count", len(data.get("content", "") or ""))
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header = f"读取 {path} 行 {line_start}~{line_end}，返回 {char_count} 字符 {max_note}{truncated_note}".strip()
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content = data.get("content", "")
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return f"{header}\n```\n{content}\n```"
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if read_type == "search":
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query = data.get("query", "")
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actual = data.get("actual_matches", 0)
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returned = data.get("returned_matches", 0)
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case_hint = "区分大小写" if data.get("case_sensitive") else "不区分大小写"
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header = (
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f"在 {path} 中搜索 \"{query}\"，返回 {returned}/{actual} 条结果（{case_hint}）"
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f" {max_note}{truncated_note}"
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).strip()
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match_texts = []
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for idx, match in enumerate(data.get("matches", []), 1):
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match_note = "（片段截断）" if match.get("truncated") else ""
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hits = match.get("hits") or []
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hit_text = ", ".join(str(h) for h in hits) if hits else "无"
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label = match.get("id") or f"match_{idx}"
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snippet = match.get("snippet", "")
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match_texts.append(
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f"[{label}] 行 {match.get('line_start')}~{match.get('line_end')} 命中行: {hit_text}{match_note}\n```\n{snippet}\n```"
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)
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if not match_texts:
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match_texts.append("未找到匹配内容。")
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return "\n".join([header] + match_texts)
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if read_type == "extract":
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segments = data.get("segments", [])
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header = (
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f"从 {path} 抽取 {len(segments)} 个片段 {max_note}{truncated_note}"
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).strip()
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seg_texts = []
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for idx, segment in enumerate(segments, 1):
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seg_note = "（片段截断）" if segment.get("truncated") else ""
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label = segment.get("label") or f"segment_{idx}"
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snippet = segment.get("content", "")
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seg_texts.append(
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f"[{label}] 行 {segment.get('line_start')}~{segment.get('line_end')}{seg_note}\n```\n{snippet}\n```"
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)
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if not seg_texts:
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seg_texts.append("未提供可抽取的片段。")
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return "\n".join([header] + seg_texts)
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return json.dumps(data, ensure_ascii=False)
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def start_new_task(self):
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"""开始新任务（重置任务级别的状态）"""
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self.current_task_first_call = True
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self.current_task_thinking = ""
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def get_current_thinking_mode(self) -> bool:
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"""获取当前应该使用的思考模式"""
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if not self.thinking_mode:
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# 快速模式，始终不使用思考
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return False
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else:
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# 思考模式：当前任务的第一次用思考，后续不用
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return self.current_task_first_call
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def _validate_json_string(self, json_str: str) -> tuple:
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"""
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验证JSON字符串的完整性
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Returns:
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(is_valid: bool, error_message: str, parsed_data: dict or None)
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"""
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if not json_str or not json_str.strip():
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return True, "", {}
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# 检查基本的JSON结构标记
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stripped = json_str.strip()
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if not stripped.startswith('{') or not stripped.endswith('}'):
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return False, "JSON字符串格式不完整（缺少开始或结束大括号）", None
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# 检查引号配对
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in_string = False
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escape_next = False
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quote_count = 0
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for char in stripped:
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if escape_next:
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escape_next = False
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continue
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if char == '\\':
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escape_next = True
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continue
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if char == '"':
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quote_count += 1
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in_string = not in_string
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if in_string:
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return False, "JSON字符串中存在未闭合的引号", None
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# 尝试解析JSON
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try:
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parsed_data = json.loads(stripped)
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return True, "", parsed_data
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except json.JSONDecodeError as e:
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return False, f"JSON解析错误: {str(e)}", None
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def _safe_tool_arguments_parse(self, arguments_str: str, tool_name: str) -> tuple:
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"""
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安全地解析工具参数，保持失败即时返回
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Returns:
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(success: bool, arguments: dict, error_message: str)
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"""
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if not arguments_str or not arguments_str.strip():
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return True, {}, ""
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# 长度检查
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max_length = 999999999 # 50KB限制
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if len(arguments_str) > max_length:
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return False, {}, f"参数过长({len(arguments_str)}字符)，超过{max_length}字符限制"
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# 尝试直接解析JSON
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try:
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parsed_data = json.loads(arguments_str)
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return True, parsed_data, ""
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except json.JSONDecodeError as e:
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preview_length = 200
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stripped = arguments_str.strip()
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preview = stripped[:preview_length] + "..." if len(stripped) > preview_length else stripped
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return False, {}, f"JSON解析失败: {str(e)}\n参数预览: {preview}"
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async def chat(
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self,
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messages: List[Dict],
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tools: Optional[List[Dict]] = None,
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stream: bool = True
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) -> AsyncGenerator[Dict, None]:
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"""
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异步调用DeepSeek API
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Args:
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messages: 消息列表
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tools: 工具定义列表
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stream: 是否流式输出
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Yields:
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响应内容块
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"""
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# 检查API密钥
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if not self.api_key or self.api_key == "your-deepseek-api-key":
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self._print(f"{OUTPUT_FORMATS['error']} API密钥未配置，请在config.py中设置API_KEY")
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return
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# 决定是否使用思考模式
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current_thinking_mode = self.get_current_thinking_mode()
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# 如果是思考模式且不是当前任务的第一次，显示提示
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if self.thinking_mode and not self.current_task_first_call:
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self._print(f"{OUTPUT_FORMATS['info']} [任务内快速模式] 使用本次任务的思考继续处理...")
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try:
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max_tokens = int(DEFAULT_RESPONSE_MAX_TOKENS)
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if max_tokens <= 0:
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raise ValueError("max_tokens must be positive")
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except (TypeError, ValueError):
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max_tokens = 4096
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payload = {
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"model": self.model_id,
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"messages": messages,
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"stream": stream,
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"thinking": {"type": "enabled" if current_thinking_mode else "disabled"},
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"max_tokens": max_tokens
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}
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if tools:
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payload["tools"] = tools
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payload["tool_choice"] = "auto"
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try:
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async with httpx.AsyncClient(http2=True, timeout=300) as client:
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if stream:
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async with client.stream(
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"POST",
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f"{self.api_base_url}/chat/completions",
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json=payload,
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headers=self.headers
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) as response:
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# 检查响应状态
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if response.status_code != 200:
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error_text = await response.aread()
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self._print(f"{OUTPUT_FORMATS['error']} API请求失败 ({response.status_code}): {error_text}")
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return
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async for line in response.aiter_lines():
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if line.startswith("data:"):
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json_str = line[5:].strip()
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if json_str == "[DONE]":
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break
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try:
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data = json.loads(json_str)
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yield data
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except json.JSONDecodeError:
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continue
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else:
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response = await client.post(
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f"{self.api_base_url}/chat/completions",
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json=payload,
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headers=self.headers
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)
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if response.status_code != 200:
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error_text = response.text
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self._print(f"{OUTPUT_FORMATS['error']} API请求失败 ({response.status_code}): {error_text}")
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return
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yield response.json()
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except httpx.ConnectError:
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self._print(f"{OUTPUT_FORMATS['error']} 无法连接到API服务器，请检查网络连接")
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except httpx.TimeoutException:
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self._print(f"{OUTPUT_FORMATS['error']} API请求超时")
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except Exception as e:
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self._print(f"{OUTPUT_FORMATS['error']} API调用异常: {e}")
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async def chat_with_tools(
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self,
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messages: List[Dict],
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tools: List[Dict],
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tool_handler: callable
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) -> str:
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"""
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带工具调用的对话（支持多轮）
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Args:
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messages: 消息列表
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tools: 工具定义
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tool_handler: 工具处理函数
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Returns:
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最终回答
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"""
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final_response = ""
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max_iterations = 200 # 最大迭代次数
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iteration = 0
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all_tool_results = [] # 记录所有工具调用结果
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# 如果是思考模式且不是当前任务的第一次调用，注入本次任务的思考
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# 注意：这里重置的是当前任务的第一次调用标志，确保新用户请求重新思考
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# 只有在同一个任务的多轮迭代中才应该注入
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# 对于新的用户请求，应该重新开始思考，而不是使用之前的思考内容
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# 只有在当前任务有思考内容且不是第一次调用时才注入
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if (self.thinking_mode and
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not self.current_task_first_call and
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self.current_task_thinking and
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iteration == 0): # 只在第一次迭代时注入，避免多次注入
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# 在messages末尾添加一个系统消息，包含本次任务的思考
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thinking_context = f"\n=== 📋 本次任务的思考 ===\n{self.current_task_thinking}\n=== 思考结束 ===\n提示：这是本次任务的初始思考，你可以基于此继续处理。"
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messages.append({
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"role": "system",
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"content": thinking_context
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})
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while iteration < max_iterations:
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iteration += 1
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# 调用API（始终提供工具定义）
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full_response = ""
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tool_calls = []
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current_thinking = ""
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# 状态标志
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in_thinking = False
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thinking_printed = False
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# 获取当前是否应该显示思考
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should_show_thinking = self.get_current_thinking_mode()
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async for chunk in self.chat(messages, tools, stream=True):
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if "choices" not in chunk:
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continue
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delta = chunk["choices"][0].get("delta", {})
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# 处理思考内容（只在思考模式开启时）
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if "reasoning_content" in delta and should_show_thinking:
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reasoning_content = delta["reasoning_content"]
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if reasoning_content: # 只处理非空内容
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if not in_thinking:
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self._print("💭 [正在思考]\n", end="", flush=True)
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in_thinking = True
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thinking_printed = True
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current_thinking += reasoning_content
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self._print(reasoning_content, end="", flush=True)
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# 处理正常内容 - 独立的if，不是elif
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if "content" in delta:
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content = delta["content"]
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if content: # 只处理非空内容
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# 如果之前在输出思考，先结束思考输出
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if in_thinking:
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self._print("\n\n💭 [思考结束]\n\n", end="", flush=True)
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in_thinking = False
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full_response += content
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self._print(content, end="", flush=True)
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# 收集工具调用 - 改进的拼接逻辑
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# 收集工具调用 - 修复JSON分片问题
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if "tool_calls" in delta:
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for tool_call in delta["tool_calls"]:
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tool_index = tool_call.get("index", 0)
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# 查找或创建对应索引的工具调用
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existing_call = None
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for existing in tool_calls:
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if existing.get("index") == tool_index:
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existing_call = existing
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break
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if not existing_call and tool_call.get("id"):
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# 创建新的工具调用
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new_call = {
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"id": tool_call.get("id"),
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"index": tool_index,
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"type": tool_call.get("type", "function"),
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"function": {
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"name": tool_call.get("function", {}).get("name", ""),
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"arguments": ""
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}
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}
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tool_calls.append(new_call)
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existing_call = new_call
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# 安全地拼接arguments - 简单字符串拼接，不尝试JSON验证
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if existing_call and "function" in tool_call and "arguments" in tool_call["function"]:
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new_args = tool_call["function"]["arguments"]
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if new_args: # 只拼接非空内容
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existing_call["function"]["arguments"] += new_args
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self._print() # 最终换行
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# 如果思考还没结束（只调用工具没有文本），手动结束
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if in_thinking:
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self._print("\n💭 [思考结束]\n")
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# 在思考模式下，如果是当前任务的第一次调用且有思考内容，保存它
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if self.thinking_mode and self.current_task_first_call and current_thinking:
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self.current_task_thinking = current_thinking
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self.current_task_first_call = False # 标记当前任务的第一次调用已完成
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# 如果没有工具调用，说明完成了
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if not tool_calls:
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if full_response: # 有正常回复，任务完成
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final_response = full_response
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break
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elif iteration == 1: # 第一次就没有工具调用也没有内容，可能有问题
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self._print(f"{OUTPUT_FORMATS['warning']} 模型未返回内容")
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break
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# 构建助手消息 - 始终包含所有收集到的内容
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assistant_content_parts = []
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# 添加思考内容（如果有）
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if current_thinking:
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assistant_content_parts.append(f"<think>\n{current_thinking}\n</think>")
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# 添加正式回复内容（如果有）
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if full_response:
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assistant_content_parts.append(full_response)
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# 添加工具调用说明
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if tool_calls:
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tool_names = [tc['function']['name'] for tc in tool_calls]
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assistant_content_parts.append(f"执行工具: {', '.join(tool_names)}")
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# 合并所有内容
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assistant_content = "\n".join(assistant_content_parts) if assistant_content_parts else "执行工具调用"
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assistant_message = {
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"role": "assistant",
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"content": assistant_content,
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"tool_calls": tool_calls
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}
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messages.append(assistant_message)
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# 执行所有工具调用 - 使用鲁棒的参数解析
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for tool_call in tool_calls:
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function_name = tool_call["function"]["name"]
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arguments_str = tool_call["function"]["arguments"]
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# 使用改进的参数解析方法，增强JSON修复能力
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success, arguments, error_msg = self._safe_tool_arguments_parse(arguments_str, function_name)
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if not success:
|
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self._print(f"{OUTPUT_FORMATS['error']} 工具参数解析失败: {error_msg}")
|
||
self._print(f" 工具名称: {function_name}")
|
||
self._print(f" 参数长度: {len(arguments_str)} 字符")
|
||
|
||
# 返回详细的错误信息给模型
|
||
error_response = {
|
||
"success": False,
|
||
"error": error_msg,
|
||
"tool_name": function_name,
|
||
"arguments_length": len(arguments_str),
|
||
"suggestion": "请检查参数格式或减少参数长度后重试"
|
||
}
|
||
|
||
# 如果参数过长，提供分块建议
|
||
if len(arguments_str) > 10000:
|
||
error_response["suggestion"] = "参数过长，建议分块处理或使用更简洁的内容"
|
||
|
||
messages.append({
|
||
"role": "tool",
|
||
"tool_call_id": tool_call["id"],
|
||
"name": function_name,
|
||
"content": json.dumps(error_response, ensure_ascii=False)
|
||
})
|
||
|
||
# 记录失败的调用，防止死循环检测失效
|
||
all_tool_results.append({
|
||
"tool": function_name,
|
||
"args": {"parse_error": error_msg, "length": len(arguments_str)},
|
||
"result": f"参数解析失败: {error_msg}"
|
||
})
|
||
continue
|
||
|
||
self._print(f"\n{OUTPUT_FORMATS['action']} 调用工具: {function_name}")
|
||
|
||
# 额外的参数长度检查（针对特定工具）
|
||
if function_name == "modify_file" and "content" in arguments:
|
||
content_length = len(arguments.get("content", ""))
|
||
if content_length > 9999999999: # 降低到50KB限制
|
||
error_msg = f"内容过长({content_length}字符)，超过50KB限制"
|
||
self._print(f"{OUTPUT_FORMATS['warning']} {error_msg}")
|
||
|
||
messages.append({
|
||
"role": "tool",
|
||
"tool_call_id": tool_call["id"],
|
||
"name": function_name,
|
||
"content": json.dumps({
|
||
"success": False,
|
||
"error": error_msg,
|
||
"suggestion": "请将内容分成多个小块分别修改，或使用replace操作只修改必要部分"
|
||
}, ensure_ascii=False)
|
||
})
|
||
|
||
all_tool_results.append({
|
||
"tool": function_name,
|
||
"args": arguments,
|
||
"result": error_msg
|
||
})
|
||
continue
|
||
|
||
tool_result = await tool_handler(function_name, arguments)
|
||
|
||
# 解析工具结果，提取关键信息
|
||
try:
|
||
result_data = json.loads(tool_result)
|
||
if function_name == "read_file":
|
||
tool_result_msg = self._format_read_file_result(result_data)
|
||
else:
|
||
tool_result_msg = tool_result
|
||
except:
|
||
tool_result_msg = tool_result
|
||
|
||
messages.append({
|
||
"role": "tool",
|
||
"tool_call_id": tool_call["id"],
|
||
"name": function_name,
|
||
"content": tool_result_msg
|
||
})
|
||
|
||
# 记录工具结果
|
||
all_tool_results.append({
|
||
"tool": function_name,
|
||
"args": arguments,
|
||
"result": tool_result_msg
|
||
})
|
||
|
||
# 如果连续多次调用同样的工具，可能陷入循环
|
||
if len(all_tool_results) >= 8:
|
||
recent_tools = [r["tool"] for r in all_tool_results[-8:]]
|
||
if len(set(recent_tools)) == 1: # 最近8次都是同一个工具
|
||
self._print(f"\n{OUTPUT_FORMATS['warning']} 检测到重复操作，停止执行")
|
||
break
|
||
|
||
if iteration >= max_iterations:
|
||
self._print(f"\n{OUTPUT_FORMATS['warning']} 达到最大迭代次数限制")
|
||
|
||
return final_response
|
||
|
||
async def simple_chat(self, messages: List[Dict]) -> tuple:
|
||
"""
|
||
简单对话（无工具调用）
|
||
|
||
Args:
|
||
messages: 消息列表
|
||
|
||
Returns:
|
||
(模型回答, 思考内容)
|
||
"""
|
||
full_response = ""
|
||
thinking_content = ""
|
||
in_thinking = False
|
||
|
||
# 获取当前是否应该显示思考
|
||
should_show_thinking = self.get_current_thinking_mode()
|
||
|
||
# 如果是思考模式且不是当前任务的第一次调用，注入本次任务的思考
|
||
if self.thinking_mode and not self.current_task_first_call and self.current_task_thinking:
|
||
thinking_context = f"\n=== 📋 本次任务的思考 ===\n{self.current_task_thinking}\n=== 思考结束 ===\n"
|
||
messages.append({
|
||
"role": "system",
|
||
"content": thinking_context
|
||
})
|
||
|
||
try:
|
||
async for chunk in self.chat(messages, tools=None, stream=True):
|
||
if "choices" not in chunk:
|
||
continue
|
||
|
||
delta = chunk["choices"][0].get("delta", {})
|
||
|
||
# 处理思考内容
|
||
if "reasoning_content" in delta and should_show_thinking:
|
||
reasoning_content = delta["reasoning_content"]
|
||
if reasoning_content: # 只处理非空内容
|
||
if not in_thinking:
|
||
self._print("💭 [正在思考]\n", end="", flush=True)
|
||
in_thinking = True
|
||
thinking_content += reasoning_content
|
||
self._print(reasoning_content, end="", flush=True)
|
||
|
||
# 处理正常内容 - 独立的if而不是elif
|
||
if "content" in delta:
|
||
content = delta["content"]
|
||
if content: # 只处理非空内容
|
||
if in_thinking:
|
||
self._print("\n\n💭 [思考结束]\n\n", end="", flush=True)
|
||
in_thinking = False
|
||
full_response += content
|
||
self._print(content, end="", flush=True)
|
||
|
||
self._print() # 最终换行
|
||
|
||
# 如果思考还没结束（极少情况），手动结束
|
||
if in_thinking:
|
||
self._print("\n💭 [思考结束]\n")
|
||
|
||
# 在思考模式下，如果是当前任务的第一次调用且有思考内容，保存它
|
||
if self.thinking_mode and self.current_task_first_call and thinking_content:
|
||
self.current_task_thinking = thinking_content
|
||
self.current_task_first_call = False
|
||
|
||
# 如果没有收到任何响应
|
||
if not full_response and not thinking_content:
|
||
self._print(f"{OUTPUT_FORMATS['error']} API未返回任何内容，请检查API密钥和模型ID")
|
||
return "", ""
|
||
|
||
except Exception as e:
|
||
self._print(f"{OUTPUT_FORMATS['error']} API调用失败: {e}")
|
||
return "", ""
|
||
|
||
return full_response, thinking_content
|