#!/usr/bin/env python3
"""
Markdown to PDF converter with Chinese font support.
Converts markdown files to PDF using weasyprint, with proper Chinese typography.
Designed for formal documents (trademark filings, legal documents, reports).
Usage:
python md_to_pdf.py input.md output.pdf
python md_to_pdf.py input.md # outputs input.pdf
Requirements:
pip install weasyprint markdown
macOS environment setup (if needed):
export DYLD_LIBRARY_PATH="/opt/homebrew/lib:$DYLD_LIBRARY_PATH"
"""
import sys
from pathlib import Path
import markdown
from weasyprint import CSS, HTML
# CSS with Chinese font support
CSS_STYLES = """
@page {
size: A4;
margin: 2.5cm 2cm;
}
body {
font-family: 'Songti SC', 'SimSun', 'STSong', 'Noto Serif CJK SC', serif;
font-size: 12pt;
line-height: 1.8;
color: #000;
width: 100%;
}
h1 {
font-family: 'Heiti SC', 'SimHei', 'STHeiti', 'Noto Sans CJK SC', sans-serif;
font-size: 18pt;
font-weight: bold;
text-align: center;
margin-top: 0;
margin-bottom: 1.5em;
}
h2 {
font-family: 'Heiti SC', 'SimHei', 'STHeiti', 'Noto Sans CJK SC', sans-serif;
font-size: 14pt;
font-weight: bold;
margin-top: 1.5em;
margin-bottom: 0.8em;
}
h3 {
font-family: 'Heiti SC', 'SimHei', 'STHeiti', 'Noto Sans CJK SC', sans-serif;
font-size: 12pt;
font-weight: bold;
margin-top: 1em;
margin-bottom: 0.5em;
}
p {
margin: 0.8em 0;
text-align: justify;
}
ul, ol {
margin: 0.8em 0;
padding-left: 2em;
}
li {
margin: 0.4em 0;
}
table {
border-collapse: collapse;
width: 100%;
margin: 1em 0;
font-size: 10pt;
table-layout: fixed;
}
th, td {
border: 1px solid #666;
padding: 8px 6px;
text-align: left;
word-wrap: break-word;
word-break: break-all;
}
th {
background-color: #f0f0f0;
font-weight: bold;
}
hr {
border: none;
border-top: 1px solid #ccc;
margin: 1.5em 0;
}
strong {
font-weight: bold;
}
code {
font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
font-size: 10pt;
background-color: #f5f5f5;
padding: 0.2em 0.4em;
border-radius: 3px;
}
pre {
background-color: #f5f5f5;
padding: 1em;
overflow-x: auto;
font-size: 10pt;
line-height: 1.4;
border-radius: 4px;
}
blockquote {
border-left: 3px solid #ccc;
margin: 1em 0;
padding-left: 1em;
color: #555;
}
"""
def markdown_to_pdf(md_file: str, pdf_file: str | None = None) -> str:
"""
Convert markdown file to PDF with Chinese font support.
Args:
md_file: Path to input markdown file
pdf_file: Path to output PDF file (optional, defaults to same name as input)
Returns:
Path to generated PDF file
"""
md_path = Path(md_file)
if pdf_file is None:
pdf_file = str(md_path.with_suffix('.pdf'))
# Read markdown content
md_content = md_path.read_text(encoding='utf-8')
# Convert to HTML
html_content = markdown.markdown(
md_content,
extensions=['tables', 'fenced_code', 'codehilite', 'toc']
)
# Create full HTML document
full_html = f"""
{md_path.stem}
{html_content}
"""
# Generate PDF
HTML(string=full_html).write_pdf(pdf_file, stylesheets=[CSS(string=CSS_STYLES)])
return pdf_file
def main():
if len(sys.argv) < 2:
print("Usage: python md_to_pdf.py [output.pdf]")
print("\nConverts markdown to PDF with Chinese font support.")
sys.exit(1)
md_file = sys.argv[1]
pdf_file = sys.argv[2] if len(sys.argv) > 2 else None
if not Path(md_file).exists():
print(f"Error: File not found: {md_file}")
sys.exit(1)
output = markdown_to_pdf(md_file, pdf_file)
print(f"Generated: {output}")
if __name__ == "__main__":
main()