| """ |
| 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": [], |
| } |
|
|
