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- import os
- import subprocess
- import platform
- from pathlib import Path
- class ConvertToPdfError(Exception):
- def __init__(self, msg):
- self.msg = msg
- super().__init__(self.msg)
- # Chinese font list
- REQUIRED_CHS_FONTS = ['SimSun', 'Microsoft YaHei', 'Noto Sans CJK SC']
- def check_fonts_installed():
- """Check if required Chinese fonts are installed."""
- system_type = platform.system()
- if system_type == 'Windows':
- # Windows: check fonts via registry or system font folder
- font_dir = Path("C:/Windows/Fonts")
- installed_fonts = [f.name for f in font_dir.glob("*.ttf")]
- if any(font for font in REQUIRED_CHS_FONTS if any(font in f for f in installed_fonts)):
- return True
- raise EnvironmentError(
- f"Missing Chinese font. Please install at least one of: {', '.join(REQUIRED_CHS_FONTS)}"
- )
- else:
- # Linux/macOS: use fc-list
- try:
- output = subprocess.check_output(['fc-list', ':lang=zh'], encoding='utf-8')
- for font in REQUIRED_CHS_FONTS:
- if font in output:
- return True
- raise EnvironmentError(
- f"Missing Chinese font. Please install at least one of: {', '.join(REQUIRED_CHS_FONTS)}"
- )
- except Exception as e:
- raise EnvironmentError(f"Font detection failed. Please install 'fontconfig' and fonts: {str(e)}")
- def get_soffice_command():
- """Return the path to LibreOffice's soffice executable depending on the platform."""
- if platform.system() == 'Windows':
- possible_paths = [
- Path("C:/Program Files/LibreOffice/program/soffice.exe"),
- Path("C:/Program Files (x86)/LibreOffice/program/soffice.exe")
- ]
- for path in possible_paths:
- if path.exists():
- return str(path)
- raise ConvertToPdfError(
- "LibreOffice not found. Please install LibreOffice and ensure soffice.exe is located in a standard path."
- )
- else:
- return 'soffice' # Assume it's in PATH on Linux/macOS
- def convert_file_to_pdf(input_path, output_dir):
- """Convert a single document (ppt, doc, etc.) to PDF."""
- if not os.path.isfile(input_path):
- raise FileNotFoundError(f"The input file {input_path} does not exist.")
- os.makedirs(output_dir, exist_ok=True)
- check_fonts_installed()
- soffice_cmd = get_soffice_command()
- cmd = [
- soffice_cmd,
- '--headless',
- '--norestore',
- '--invisible',
- '--convert-to', 'pdf',
- '--outdir', str(output_dir),
- str(input_path)
- ]
- process = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
- if process.returncode != 0:
- raise ConvertToPdfError(f"LibreOffice convert failed: {process.stderr.decode()}")
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