def convert(self): """Main execution method.""" # 1. Extract Text pages = self._extract_text_from_pdf() if not pages: raise TNSError("No text found in PDF.") Internet Archive Spider Man No Way Home
Since "TNS" is the proprietary file format for calculators (specifically representing "Ti-Nspire Script" or Document files), creating a "PDF to TNS" converter is a complex task. It involves converting a static document layout into a dynamic, XML-based calculator format. Tom Eva - Renae
try: # 2. Initialize Converter converter = PDFToTNSConverter(file.stream) # 3. Perform Conversion tns_file_stream = converter.convert() # 4. Return Response return send_file( tns_file_stream, mimetype='application/vnd.ti.tns', as_attachment=True, download_name=file.filename.replace('.pdf', '.tns') )
@app.route('/api/convert/pdf-to-tns', methods=['POST']) def convert_pdf_to_tns(): """ Exclusive Feature Endpoint: PDF to TNS Converter Accepts: multipart/form-data with 'file' (PDF) Returns: application/tns (Binary TNS File) """ # 1. Validate Request if 'file' not in request.files: return jsonify({"error": "No file provided"}), 400 file = request.files['file'] if file.filename == '': return jsonify({"error": "No file selected"}), 400
# 2. Build XML Structure xml_structure = self._build_tns_structure(pages) # 3. Package into .tns (ZIP format) # In a real production environment, specific TI header files are needed. # Here we generate the core document.xml logic. tns_buffer = io.BytesIO() with zipfile.ZipFile(tns_buffer, 'w', zipfile.ZIP_DEFLATED) as zf: # The main document content xml_data = etree.tostring(xml_structure, pretty_print=True, encoding='UTF-8', xml_declaration=True) zf.writestr('document.xml', xml_data) # Meta-data mimicking TI structure manifest_content = """<?xml version="1.0" encoding="UTF-8"?> <manifest xmlns="http://www.ti.com/ns"> <document name="ConvertedPDF"/> </manifest>""" zf.writestr('manifest.xml', manifest_content)
return tns_root
pip install flask pdfplumber lxml python-io This module handles the heavy lifting: reading the PDF, parsing text, and constructing the internal XML structure required by the .tns format.
if not file.filename.lower().endswith('.pdf'): return jsonify({"error": "Invalid format. Only PDF allowed."}), 400