egutierrez
df424f2de0
Añade 3 tipos Python (PDFDoc, PDFPage, PDFStyle) y 10 funciones Python para construir PDFs con fpdf2 (builder fluent), fusionar PDFs con pypdf y convertir HTML/Markdown a PDF via weasyprint (stub si no disponible). Añade pdf_simple_report en Go como stub hasta que go-pdf/fpdf se integre. - python/types/infra/: pdf_doc, pdf_page, pdf_style - python/functions/infra/: pdf_create, pdf_add_page, pdf_add_text, pdf_add_table, pdf_add_image, pdf_add_header_footer, pdf_from_html, pdf_from_markdown, pdf_merge, pdf_save - functions/infra/pdf_simple_report.go: stub Go con ReportSection/ReportTable - 17 tests Python pasando (pytest) - fpdf2 y pypdf añadidos via uv al venv Python Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
93 lines
3.0 KiB
Python
93 lines
3.0 KiB
Python
"""pdf_from_markdown — convierte Markdown a HTML y luego a PDF usando weasyprint."""
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import sys
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import os
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_infra_dir = os.path.dirname(__file__)
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sys.path.insert(0, _infra_dir)
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def pdf_from_markdown(
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markdown_string: str,
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output_path: str,
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css: str = "",
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page_size: str = "A4",
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) -> str:
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"""Convierte un string Markdown a PDF via HTML + weasyprint.
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Convierte Markdown a HTML con la libreria `markdown`, luego genera
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el PDF con weasyprint. Incluye CSS por defecto para tipografia legible.
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NOTA: Requiere `weasyprint` y `markdown` instalados:
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pip install weasyprint markdown
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Y dependencias de sistema weasyprint: pango, cairo, gdk-pixbuf.
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Args:
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markdown_string: contenido Markdown como string.
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output_path: ruta donde guardar el PDF generado.
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css: CSS adicional a aplicar sobre los estilos por defecto.
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page_size: tamaño de pagina: 'A4', 'letter'. Por defecto 'A4'.
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Returns:
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output_path con el PDF guardado.
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Raises:
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RuntimeError: si weasyprint o markdown no estan instalados.
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"""
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try:
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import markdown as md_lib
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except ImportError as exc:
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raise RuntimeError(
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"markdown no esta instalado. Instalar con: pip install markdown"
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) from exc
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try:
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import weasyprint
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except ImportError as exc:
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raise RuntimeError(
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"weasyprint no esta instalado. "
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"Instalar con: pip install weasyprint\n"
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"Dependencias de sistema (Linux): "
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"apt install libpango-1.0-0 libcairo2 libgdk-pixbuf-2.0-0"
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) from exc
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# Convertir Markdown a HTML
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html_body = md_lib.markdown(
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markdown_string,
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extensions=["tables", "fenced_code", "nl2br"],
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)
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default_css = """
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body {
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font-family: Helvetica, Arial, sans-serif;
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font-size: 11pt;
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line-height: 1.5;
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color: #222;
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max-width: 170mm;
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margin: 0 auto;
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}
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h1, h2, h3 { color: #333; margin-top: 1.2em; }
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h1 { font-size: 18pt; border-bottom: 1px solid #ccc; }
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h2 { font-size: 14pt; }
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h3 { font-size: 12pt; }
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code { background: #f5f5f5; padding: 1px 4px; border-radius: 3px; font-size: 9pt; }
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pre { background: #f5f5f5; padding: 8px; border-radius: 4px; overflow: auto; }
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table { border-collapse: collapse; width: 100%; }
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th, td { border: 1px solid #ccc; padding: 6px; text-align: left; }
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th { background: #eee; }
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blockquote { border-left: 3px solid #ccc; margin: 0; padding-left: 12px; color: #555; }
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"""
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page_css = f"@page {{ size: {page_size}; margin: 20mm; }}"
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combined_css = page_css + "\n" + default_css + "\n" + css
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html = f"""<!DOCTYPE html>
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<html><head><meta charset="utf-8"></head>
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<body>{html_body}</body></html>"""
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wp_html = weasyprint.HTML(string=html)
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stylesheet = weasyprint.CSS(string=combined_css)
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wp_html.write_pdf(output_path, stylesheets=[stylesheet])
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return output_path
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