199 lines
8.3 KiB
Python
199 lines
8.3 KiB
Python
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import os
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import time
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try:
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import win32com.client
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import pythoncom
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except ImportError:
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win32com = None
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class MTPHandler:
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def __init__(self):
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self.cache_dir = os.path.join(os.getcwd(), "mtp_cache")
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if not os.path.exists(self.cache_dir):
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os.makedirs(self.cache_dir)
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def get_latest_xml_windows(self, device_name, path_str):
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"""
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在 Windows MTP 设备上寻找并复制最新的 XML 文件。
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"""
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print(f"\n[MTP] >>> 开始同步工作: 设备={device_name}")
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if win32com is None:
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return None, "系统未安装 pywin32。"
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try:
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pythoncom.CoInitialize()
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shell = win32com.client.Dispatch("Shell.Application")
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computer = shell.NameSpace(17) # 此电脑
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# 1. 寻找设备 (增加容错：忽略首尾空格和大小写)
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device_item = None
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target_name = device_name.strip().lower()
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print(f"[MTP] 正在检索设备，目标名称: '{target_name}'")
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items = computer.Items()
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available_devices = []
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for item in items:
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available_devices.append(item.Name)
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if item.Name.strip().lower() == target_name:
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device_item = item
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print(f"[MTP] 匹配成功: '{item.Name}'")
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break
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if not device_item:
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print(f"[MTP] 未找到设备: '{device_name}'")
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print(f"[MTP] 当前电脑识别到的设备列表: {available_devices}")
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return None, f"未找到 MTP 设备: {device_name} (请检查名称)"
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current_folder = device_item.GetFolder
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# 2. 深入路径
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path_chain = [p.strip() for p in path_str.replace('\\', '/').split('/') if p.strip()]
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for folder_name in path_chain:
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found = False
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for item in current_folder.Items():
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if item.Name.lower() == folder_name.lower() and item.IsFolder:
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current_folder = item.GetFolder
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found = True
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break
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if not found:
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print(f"[MTP] 路径中断，找不到文件夹: '{folder_name}'")
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# 打印一下当前目录下有的东西，帮用户排查
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content = [i.Name for i in current_folder.Items()]
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print(f"[MTP] 当前所在位置 [ {current_folder.Title} ] 下的可选内容: {content}")
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return None, f"路径点不存在: {folder_name}"
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# 3. 扫描文件并识别“最新”
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print(f"[MTP] 已到达目标目录: [ {current_folder.Title} ]")
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print(f"[MTP] 正在列出该目录下所有项目...")
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print("-" * 40)
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xml_items = []
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all_items = current_folder.Items()
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print(f"[MTP] 目录内总项数: {all_items.Count}")
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for i in range(all_items.Count):
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try:
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item = all_items.Item(i)
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name = str(item.Name)
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is_folder = item.IsFolder
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# 打印每一个文件的详细信息用于排查
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# 尝试打印前 6 个详情列，看看哪一列是类型，哪一列是时间
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details = [str(current_folder.GetDetailsOf(item, j)) for j in range(6)]
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if i == 0: print(f"[MTP] 属性列参考(0-5): {details}")
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item_type = details[2]
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# 识别逻辑：
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# 1. 文件名明确以 .xml 结尾
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# 2. 或者类型描述中包含 "XML" (遍历 2, 3, 4 列)
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# 3. 或者针对您的 PDA 特效：文件名以 "Result_" 开头且名字里没有点 (认为后缀被隐藏了)
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is_xml_name = name.lower().endswith(".xml")
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is_xml_type = any("xml" in details[j].lower() for j in [2, 3, 4, 5])
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is_pda_result = name.startswith("Result_") and "." not in name
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if not is_folder and (is_xml_name or is_xml_type or is_pda_result):
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# 尝试获取最可信的时间
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mtime = self._get_best_time(current_folder, item)
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# 如果文件名包含 Result_YYYYMMDD_HHMMSS，提取它作为辅助排序依据
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name_ts = self._extract_time_from_name(name)
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xml_items.append({
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'item': item,
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'name': name if is_xml_name else f"{name}.xml",
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'time': mtime,
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'name_ts': name_ts
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})
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print(f"[MTP] 识别 XML: '{name}' | 创建/修改时间: {mtime} | 文件名时间: {name_ts}")
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else:
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pass
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except Exception as e:
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print(f"[MTP] 读取第 {i} 个项目时出错: {e}")
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print("-" * 40)
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if not xml_items:
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print(f"[MTP] 报错: 在目录 [ {current_folder.Title} ] 中没有找到任何以 .xml 结尾的文件")
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return None, "该目录中没有 XML 文件"
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# 排序逻辑优化：
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# 1. 优先按照文件名里的时间戳排序 (Result_YYYYMMDD_HHMMSS)
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# 2. 其次按照系统返回的时间属性排序
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# 3. 最后按全名排序
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xml_items.sort(key=lambda x: (x['name_ts'], str(x['time']), x['name']), reverse=True)
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latest = xml_items[0]
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latest_item = latest['item']
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filename = latest['name']
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print(f"[MTP] 选定最新文件: {filename}")
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print(f"[MTP] - 属性时间: {latest['time']}")
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print(f"[MTP] - 名称日期: {latest['name_ts']}")
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# 4. 复制到本地
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local_path = os.path.abspath(os.path.join(self.cache_dir, filename))
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# 清理旧缓存
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for f in os.listdir(self.cache_dir):
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try: os.remove(os.path.join(self.cache_dir, f))
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except: pass
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print(f"[MTP] 正在拉取文件到本地缓存...")
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dest_shell_folder = shell.NameSpace(os.path.abspath(self.cache_dir))
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dest_shell_folder.CopyHere(latest_item, 4 | 16)
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# 等待
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success = False
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for i in range(20):
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if os.path.exists(local_path) and os.path.getsize(local_path) > 0:
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success = True
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break
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time.sleep(0.5)
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if success:
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print(f"[MTP] ✨ 同步成功: {filename}")
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return local_path, filename
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else:
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return None, "同步超时"
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except Exception as e:
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print(f"[MTP] 异常: {e}")
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return None, str(e)
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finally:
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pythoncom.CoUninitialize()
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def _extract_time_from_name(self, name):
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"""从文件名 Result_20251222_124145 中提取日期字符串用于排序"""
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import re
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# 匹配 8位数字_6位数字 (YYYYMMDD_HHMMSS)
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match = re.search(r'(\d{8}_\d{6})', name)
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if match:
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return match.group(1)
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# 如果没匹配到，试试只匹配 8位日期
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match = re.search(r'(\d{8})', name)
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if match:
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return match.group(1)
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return ""
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def _get_best_time(self, folder_obj, item_obj):
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"""尝试从 Shell 属性中获取文件时间"""
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# 索引 3 通常是修改时间，索引 4 通常是创建时间
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for idx in [3, 4, 5]:
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try:
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t = folder_obj.GetDetailsOf(item_obj, idx)
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if t and len(t) > 5: # 简单过滤无效短字符串
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return t
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except: pass
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# 兜底尝试标准属性
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try:
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return str(item_obj.ModifyDate)
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except: return ""
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def clear_cache(self):
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if os.path.exists(self.cache_dir):
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import shutil
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shutil.rmtree(self.cache_dir)
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os.makedirs(self.cache_dir)
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