| """ | |
| PDF utility functions for the DeepCode agent system. | |
| """ | |
| from pathlib import Path | |
| import PyPDF2 | |
| def read_pdf_metadata(file_path: Path) -> dict: | |
| """Read PDF metadata with proper encoding handling.""" | |
| try: | |
| print(f"\nAttempting to read PDF metadata from: {file_path}") | |
| with open(file_path, "rb") as file: | |
| pdf_reader = PyPDF2.PdfReader(file) | |
| info = pdf_reader.metadata | |
| first_page = pdf_reader.pages[0] | |
| text = first_page.extract_text() | |
| lines = text.split("\n")[:10] | |
| title = None | |
| authors = [] | |
| if info: | |
| title = info.get("/Title", "").strip().replace("\x00", "") | |
| author = info.get("/Author", "").strip().replace("\x00", "") | |
| if author: | |
| authors = [author] | |
| if not title and lines: | |
| title = lines[0].strip() | |
| if not authors and len(lines) > 1: | |
| for line in lines[1:3]: | |
| if "author" in line.lower() or "by" in line.lower(): | |
| authors = [line.strip()] | |
| break | |
| return { | |
| "title": title if title else "Unknown Title", | |
| "authors": authors if authors else ["Unknown Author"], | |
| "year": info.get("/CreationDate", "")[:4] if info else "Unknown Year", | |
| "first_lines": lines, | |
| } | |
| except Exception as e: | |
| print(f"\nError reading PDF: {str(e)}") | |
| return { | |
| "title": "Error reading PDF", | |
| "authors": ["Unknown"], | |
| "year": "Unknown", | |
| "first_lines": [], | |
| } | |