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# app.py
import gradio as gr
import markdown
import tempfile
import os
from weasyprint import HTML
from pathlib import Path
def convert_markdown_to_pdf(markdown_file):
"""
Convert uploaded markdown file to PDF and return both preview HTML and PDF path
"""
if markdown_file is None:
return None, None
# Read the markdown content
markdown_content = markdown_file.decode('utf-8')
# Convert markdown to HTML
html_content = markdown.markdown(markdown_content)
# Wrap HTML content with proper HTML structure and CSS
full_html = f"""
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<style>
@page {{
margin: 2.5cm;
}}
body {{
font-family: Arial, sans-serif;
line-height: 1.6;
max-width: 800px;
margin: 0 auto;
padding: 20px;
}}
h1 {{ color: #2c3e50; margin-top: 1em; }}
h2 {{ color: #34495e; margin-top: 0.8em; }}
code {{
background-color: #f7f7f7;
padding: 2px 5px;
border-radius: 3px;
font-family: monospace;
}}
pre {{
background-color: #f7f7f7;
padding: 15px;
border-radius: 5px;
white-space: pre-wrap;
font-family: monospace;
}}
</style>
</head>
<body>
{html_content}
</body>
</html>
"""
# Create temporary file for PDF
with tempfile.NamedTemporaryFile(delete=False, suffix='.pdf') as pdf_file:
pdf_path = pdf_file.name
# Convert HTML to PDF using WeasyPrint
try:
HTML(string=full_html).write_pdf(pdf_path)
return full_html, pdf_path
except Exception as e:
print(f"Error converting to PDF: {e}")
if os.path.exists(pdf_path):
os.unlink(pdf_path)
return None, None
def process_file(file):
"""
Process the uploaded file and return preview and PDF download
"""
if file is None:
return None, None
preview_html, pdf_path = convert_markdown_to_pdf(file)
if preview_html is None or pdf_path is None:
return "Error converting file", None
return preview_html, pdf_path
# Create Gradio interface
with gr.Blocks() as app:
gr.Markdown("# Markdown to PDF Converter")
gr.Markdown("Upload a markdown file to convert it to PDF. You can preview the result and download the PDF.")
with gr.Row():
file_input = gr.File(label="Upload Markdown File", file_types=[".md", ".markdown"])
with gr.Row():
preview = gr.HTML(label="Preview")
pdf_output = gr.File(label="Download PDF")
file_input.upload(
fn=process_file,
inputs=[file_input],
outputs=[preview, pdf_output]
)
if __name__ == "__main__":
app.launch() |