txt转批量pdf（用到了阿里巴巴普惠体3.0）

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import tkinter import tkinter.filedialog import tkinter.messagebox import customtkinter import os import multiprocessing # Changed from threading from multiprocessing import Manager, Pool # Use Manager for shared Queue, Pool directly import queue # Added for queue.Empty exception # Removed fpdf import # --- ReportLab Imports --- from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, PageBreak from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle from reportlab.lib.pagesizes import A4 from reportlab.pdfbase import pdfmetrics from reportlab.pdfbase.ttfonts import TTFont # --- End ReportLab Imports --- from pathlib import Path import time import locale import math # Removed datetime and timedelta imports   FONT_PATH = 'AlibabaPuHuiTi-3/AlibabaPuHuiTi-3-55-Regular/AlibabaPuHuiTi-3-55-Regular.ttf' FONT_NAME = 'AlibabaPuHuiTiR' # ReportLab font name (can be different) # Use CPU count for true parallelism, fallback to 4 if None MAX_CONCURRENT = os.cpu_count() if os.cpu_count() else 4 BUFFER_SIZE = 16 * 1024 * 1024  # 16MB 缓冲区大小   customtkinter.set_appearance_mode("System") customtkinter.set_default_color_theme("blue")   # --- Font Registration (Do this once, ideally before multiprocessing starts, but needs path) --- # It's generally safer to register in the worker process if path issues arise, # but let's try registering globally first. If it causes issues (e.g., font not found in worker), # we'll move it into the worker. try:     if os.path.exists(FONT_PATH):         pdfmetrics.registerFont(TTFont(FONT_NAME, FONT_PATH))     else:         # This error should ideally be caught before starting the GUI         print(f"[ERROR] Font file not found during initial registration: {FONT_PATH}")         # We'll still raise an error in the worker if needed. except Exception as e:     print(f"[ERROR] Failed to register font globally: {e}")     # --- Worker Functions (Top Level for Multiprocessing) --- def convert_file_worker(txt_path, output_queue):     """Worker function executed in a separate process using ReportLab."""     pdf_path = Path(txt_path).with_suffix('.pdf')     file_basename = os.path.basename(txt_path)     content = None # Initialize content       try:         # 尝试读取文件内容和检测编码         encodings_to_try = ['utf-8', 'gbk', locale.getpreferredencoding(False)]           for enc in encodings_to_try:             try:                 with open(txt_path, 'rb', buffering=BUFFER_SIZE) as f:                      raw_content = f.read()                 content = raw_content.decode(enc)                 break             except UnicodeDecodeError:                 continue             except Exception as read_err:                 raise Exception(f"读取时出错 ({txt_path}): {read_err}")           if content is None:             raise Exception(f"无法使用 {encodings_to_try} 解码文件: {file_basename}")           if not content.strip():             output_queue.put(("status", txt_path, True, "文件为空，已跳过"))             return           # --- ReportLab PDF Generation ---         try:             # Check font registration within worker (more robust)             # This might be slightly redundant if global registration worked, but safer.             if FONT_NAME not in pdfmetrics.getRegisteredFontNames():                  if os.path.exists(FONT_PATH):                       pdfmetrics.registerFont(TTFont(FONT_NAME, FONT_PATH))                  else:                       raise Exception(f"错误：字体文件 '{FONT_PATH}' 在工作进程中未找到!")               doc = SimpleDocTemplate(str(pdf_path), pagesize=A4) # Use str(pdf_path)             styles = getSampleStyleSheet()                           # Create a custom style using the registered font             custom_style = ParagraphStyle(                 name='CustomStyle',                 parent=styles['Normal'],                 fontName=FONT_NAME,                 fontSize=10,                 leading=14, # Line spacing                 encoding='utf8' # Important for ReportLab with Unicode             )               # Prepare content for ReportLab Flowables             # Replace potential problematic characters if needed, handle newlines             # ReportLab's Paragraph handles HTML-like tags for basic formatting             # We'll treat each line as a paragraph for simplicity, preserving line breaks.             # Replace \r\n with \n, then split by \n             lines = content.replace('\r\n', '\n').split('\n')             story = []             for line in lines:                 # Escape HTML tags within the line to prevent misinterpretation                 # escaped_line = line.replace('&', '&').replace('<', '<').replace('>', '>')                 # Or simply use as is if no HTML-like tags are expected in TXT                 para = Paragraph(line, custom_style)                 story.append(para)                 # Add a small spacer for visual separation if desired, or rely on leading                 # story.append(Spacer(1, 2))               # Build the PDF             doc.build(story)           except Exception as pdf_err:              raise Exception(f"使用 ReportLab 生成 PDF 时出错 ({file_basename}): {pdf_err}")         # --- End ReportLab PDF Generation ---           output_queue.put(("status", txt_path, True, f"成功转换为 {os.path.basename(pdf_path)}"))       except Exception as e:         output_queue.put(("status", txt_path, False, f"处理 {file_basename} 时出错: {e}"))   # 将转换进程目标函数移到类外部 def start_conversion_process_target(file_list, queue_ref):     """Target function for the management process."""     try:         with Pool(processes=MAX_CONCURRENT) as pool:             for txt_file in file_list:                 pool.apply_async(convert_file_worker, args=(txt_file, queue_ref))             pool.close()             pool.join()         queue_ref.put(("done",))     except Exception as e:         queue_ref.put(("error", f"转换管理进程出错: {e}"))   # --- Main Application Class --- class App(customtkinter.CTk):     def __init__(self):         super().__init__()           self.title("TXT to PDF 批量转换器 (ReportLab)") # Updated title         self.geometry("700x550")         self.configure(fg_color=("#f5f5f5", "#2b2b2b"))           self.grid_columnconfigure(0, weight=1)         self.grid_rowconfigure(3, weight=1)           main_frame = customtkinter.CTkFrame(self, corner_radius=15, fg_color=("white", "#333333"))         main_frame.grid(row=0, column=0, padx=30, pady=30, sticky="nsew")         main_frame.grid_columnconfigure(0, weight=1)         main_frame.grid_columnconfigure(1, weight=0)         main_frame.grid_rowconfigure(3, weight=1)           title_label = customtkinter.CTkLabel(             main_frame,             text="TXT to PDF 批量转换器",             font=customtkinter.CTkFont(size=24, weight="bold"),             text_color=("#1a1a1a", "#ffffff")         )         title_label.grid(row=0, column=0, columnspan=2, padx=20, pady=(20, 30))           self.select_folder_button = customtkinter.CTkButton(             main_frame,             text="选择 TXT 文件",             command=self.select_folder,             height=40,             corner_radius=8,             font=customtkinter.CTkFont(size=14),             fg_color=("#2986cc", "#1f6aa5"),             hover_color=("#246ea6", "#195785")         )         self.select_folder_button.grid(row=1, column=0, padx=(30, 5), pady=(0, 15), sticky="ew")           self.start_button = customtkinter.CTkButton(             main_frame,             text="开始转换",             command=self.start_conversion,             state="disabled",             height=40,             corner_radius=8,             font=customtkinter.CTkFont(size=14),             fg_color=("#27ae60", "#219653"),             hover_color=("#219653", "#1e8449")         )         self.start_button.grid(row=1, column=1, padx=(5, 30), pady=(0, 15), sticky="ew")           self.folder_path_label = customtkinter.CTkLabel(             main_frame,             text="未选择文件",             font=customtkinter.CTkFont(size=12),             text_color=("#666666", "#999999"),             anchor="w"         )         self.folder_path_label.grid(row=2, column=0, columnspan=2, padx=30, pady=(0, 15), sticky="ew")           self.status_textbox = customtkinter.CTkTextbox(             main_frame,             state="disabled",             wrap="word",             height=200,             corner_radius=8,             border_width=1,             border_color=("#e0e0e0", "#404040"),             fg_color=("#ffffff", "#2b2b2b")         )         self.status_textbox.grid(row=3, column=0, columnspan=2, padx=30, pady=(0, 20), sticky="nsew")           self.progressbar = customtkinter.CTkProgressBar(             main_frame,             height=15,             corner_radius=5,             fg_color=("#f0f0f0", "#333333"),             progress_color=("#2986cc", "#1f6aa5")         )         self.progressbar.grid(row=4, column=0, columnspan=2, padx=30, pady=(0, 10), sticky="ew")         self.progressbar.set(0)           self.progress_percent_label = customtkinter.CTkLabel(             main_frame,             text="0%",             font=customtkinter.CTkFont(size=12),             text_color=("#666666", "#999999")         )         self.progress_percent_label.grid(row=5, column=0, columnspan=2, padx=30, pady=(0, 20), sticky="w")           self.selected_folder = ""         self.txt_files = []         self.manager = None         self.conversion_queue = None         self.conversion_process = None         self.monitor_queue_id = None           self.start_time = None         self.processed_files = 0         self.total_files = 0         self.failed_files = []       def select_folder(self):         if self.conversion_process and self.conversion_process.is_alive():             self.log_status("请等待当前转换完成。")             return           files = tkinter.filedialog.askopenfilenames(filetypes=[("TXT files", "*.txt")])         if files:             self.txt_files = list(files)             self.selected_folder = os.path.dirname(self.txt_files[0])             self.folder_path_label.configure(text=f"已选择 {len(self.txt_files)} 个文件")             self.log_status(f"已选择 {len(self.txt_files)} 个 TXT 文件")             self.start_button.configure(state="normal")             self.update_progress(value=0)             self.processed_files = 0             self.total_files = len(self.txt_files)             self.failed_files = []         else:             if self.txt_files:                  self.selected_folder = ""                  self.txt_files = []                  self.folder_path_label.configure(text="未选择文件")                  self.start_button.configure(state="disabled")                  self.log_status("未选择文件。")                  self.update_progress(value=0)       def log_status(self, message):         def _update():             self.status_textbox.configure(state="normal")             self.status_textbox.insert("end", f"{message}\n")             self.status_textbox.configure(state="disabled")             self.status_textbox.see("end")         self.after(0, _update)       def update_progress(self, value=None):         def _update():             if value is not None:                 self.progressbar.set(value)                 percent = int(value * 100)                 self.progress_percent_label.configure(text=f"{percent}%")         self.after(0, _update)       def process_queue(self):         try:             while True:                 message = self.conversion_queue.get_nowait()                 msg_type = message[0]                   if msg_type == "status":                     _, txt_path, success, status_msg = message                     self.processed_files += 1                     progress_value = self.processed_files / self.total_files if self.total_files > 0 else 0                     self.update_progress(value=progress_value)                       log_prefix = "[成功]" if success else "[失败]"                     self.log_status(f"{log_prefix} {os.path.basename(txt_path)}: {status_msg}")                     if not success:                         self.failed_files.append(os.path.basename(txt_path))                   elif msg_type == "done":                     end_time = time.time()                     duration = end_time - self.start_time if self.start_time else 0                     self.log_status("-" * 20)                     self.log_status(f"转换完成！总共处理 {self.processed_files} 个文件，耗时: {duration:.2f} 秒。")                     if self.failed_files:                         self.log_status(f"失败 {len(self.failed_files)} 个文件: {', '.join(self.failed_files)}")                     else:                         self.log_status("所有文件转换成功！")                     self.start_button.configure(state="normal")                     self.select_folder_button.configure(state="normal")                     self.conversion_process = None                     self.monitor_queue_id = None                     self.update_progress(value=1.0)                     if self.manager:                         try:                             self.manager.shutdown()                         except Exception as e:                             print(f"Error shutting down manager after completion: {e}")                         self.manager = None                     return                   elif msg_type == "error":                     self.log_status(f"[严重错误] {message[1]}")                     self.start_button.configure(state="normal")                     self.select_folder_button.configure(state="normal")                     self.conversion_process = None                     self.monitor_queue_id = None                     if self.manager:                         try:                             self.manager.shutdown()                         except Exception as e:                             print(f"Error shutting down manager on error: {e}")                         self.manager = None                     return           except queue.Empty:             pass           if self.conversion_process and self.conversion_process.is_alive():              self.monitor_queue_id = self.after(100, self.process_queue)         elif self.processed_files < self.total_files and self.conversion_process and not self.conversion_process.is_alive():              self.log_status("[错误] 转换进程意外终止。")              self.start_button.configure(state="normal")              self.select_folder_button.configure(state="normal")              self.conversion_process = None              self.monitor_queue_id = None              if self.manager:                  try:                      self.manager.shutdown()                  except Exception as e:                      print(f"Error shutting down manager on unexpected process exit: {e}")                  self.manager = None         elif self.processed_files == self.total_files and self.conversion_queue and not self.conversion_queue.empty():              self.monitor_queue_id = self.after(100, self.process_queue)         def start_conversion(self):         if not self.txt_files:             self.log_status("请先选择 TXT 文件。")             return           if self.conversion_process and self.conversion_process.is_alive():              self.log_status("转换已经在进行中...")              return           if self.monitor_queue_id:             self.after_cancel(self.monitor_queue_id)             self.monitor_queue_id = None           if self.conversion_process:             if self.conversion_process.is_alive():                 self.conversion_process.terminate()                 self.conversion_process.join(timeout=0.5)             self.conversion_process = None         if self.manager:              try:                  self.manager.shutdown()              except Exception as e:                  print(f"Error shutting down old manager: {e}")              self.manager = None           self.manager = Manager()         self.conversion_queue = self.manager.Queue()           self.start_button.configure(state="disabled")         self.select_folder_button.configure(state="disabled")         self.status_textbox.configure(state="normal")         self.status_textbox.delete("1.0", "end")         self.status_textbox.configure(state="disabled")           self.update_progress(value=0)         self.processed_files = 0         self.total_files = len(self.txt_files)         self.failed_files = []           self.log_status(f"开始使用 {MAX_CONCURRENT} 个进程转换 {self.total_files} 个文件 (使用 ReportLab)...") # Updated log         self.start_time = time.time()           self.conversion_process = multiprocessing.Process(             target=start_conversion_process_target,             args=(self.txt_files, self.conversion_queue),             daemon=False         )         self.conversion_process.start()           self.monitor_queue_id = self.after(100, self.process_queue)       def on_closing(self):         if self.conversion_process and self.conversion_process.is_alive():             if tkinter.messagebox.askyesno("退出", "转换仍在进行中，确定要退出吗？"):                 print("Terminating conversion process...")                 self.conversion_process.terminate()                 self.conversion_process.join(timeout=0.5)                 if self.manager:                     try:                         self.manager.shutdown()                     except Exception as e:                         print(f"Error shutting down manager during termination: {e}")                 self.destroy()             else:                 return         else:             if self.manager:                  try:                      self.manager.shutdown()                  except Exception as e:                      print(f"Error shutting down manager on normal close: {e}")             self.destroy()   if __name__ == "__main__":     multiprocessing.freeze_support()       # Font check now includes trying to register it early     font_ok = False     if os.path.exists(FONT_PATH):         try:             pdfmetrics.registerFont(TTFont(FONT_NAME, FONT_PATH))             font_ok = True             print(f"Font '{FONT_NAME}' registered successfully from {FONT_PATH}")         except Exception as e:             print(f"[ERROR] Failed to register font '{FONT_NAME}' from {FONT_PATH}: {e}")     else:         print(f"[ERROR] Font file not found: {FONT_PATH}")       if not font_ok:         root = tkinter.Tk()         root.withdraw()         tkinter.messagebox.showerror("字体错误", f"错误：无法加载或注册字体文件 '{FONT_PATH}'! 请确保文件存在且有效。")         root.destroy()         exit()       try:         app = App()         app.protocol("WM_DELETE_WINDOW", app.on_closing)         app.mainloop()     except Exception as e:         print(f"Application failed to start: {e}")         root = tkinter.Tk()         root.withdraw()         tkinter.messagebox.showerror("启动错误", f"无法启动应用程序: {e}")         root.destroy()

夸克逃逸

感谢分享。建议增加一些核心代码的分析，增加一些实际效果结果，说一下实际的应用场景，而不是一段代码。

shroer

有成品吗？

sktao

之前发了  改进增加了一下字体

hs99

支持分享

hierme

感谢楼主的分享

touristxxp

感谢分享！

hnzx

感谢分享！

1230tjh

很实用的工具

yycc1818

很实用，感谢分享