100 lines
2.7 KiB
Python
100 lines
2.7 KiB
Python
# driver.py
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from pypdf import PageObject
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from pdfaggregator import *
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from pypdf import PdfReader, PdfWriter
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import argparse
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PDF_INPUTS = [
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{"file": "pdfcreator/input.pdf", "sections": ["5", "@20-30"]},
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# {"file": "pdfcreator/input2.pdf",
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# "sections": ["3.1"]}
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]
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OUTPUT_PDF = "pdfcreator/extracted_sections.pdf"
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# crop ratios
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HEADER_CROP = 0.1
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FOOTER_CROP = 0.03
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def main(pdf_inputs, output_pdf):
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content_writer = PdfWriter()
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toc_entries = []
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current_page = 0
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for pdf_info in pdf_inputs: # or change
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REFERENCE_BOX = None
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reader = PdfReader(pdf_info["file"])
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outline_tree = build_outline_tree(reader)
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total_pages = len(reader.pages)
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for entry in pdf_info["sections"]:
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page_indices = parse_page_range(entry)
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if page_indices:
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# Explicit page range
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current_page, REFERENCE_BOX, toc_entry = extract_page_range(
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entry, reader, content_writer, current_page, REFERENCE_BOX,
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HEADER_CROP, FOOTER_CROP
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)
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else:
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# Section prefix
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current_page, REFERENCE_BOX, toc_entry = extract_section_prefix(
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entry, reader, content_writer, current_page, REFERENCE_BOX,
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outline_tree, HEADER_CROP, FOOTER_CROP
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)
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if toc_entry:
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toc_entries.append(toc_entry)
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# Create TOC PDF
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toc_pdf = create_toc_pdf(toc_entries)
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toc_page_count = len(toc_pdf.pages)
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final_writer = PdfWriter()
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# add TOC pages
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for page in toc_pdf.pages:
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final_writer.add_page(page)
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# add content pages
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for page in content_writer.pages:
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final_writer.add_page(page)
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# Add bookmarks
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bookmark_stack = {}
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for entry in toc_entries:
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parent = bookmark_stack.get(entry["level"] - 1)
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bm = final_writer.add_outline_item(
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title=entry["title"],
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page_number=(entry["page"] - 1) + toc_page_count,
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parent=parent
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)
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bookmark_stack[entry["level"]] = bm
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with open(output_pdf, "wb") as f:
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final_writer.write(f)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(
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description="Extract sections and page ranges from PDFs and aggregate into a new PDF with TOC and bookmarks."
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)
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parser.add_argument(
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"-o", "--output",
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required=True,
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help="Output PDF file"
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)
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parser.add_argument(
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"-i", "--inputs",
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nargs="+",
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help="Inputs in the form file.pdf:section1,section2 or file.pdf:@1-10"
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)
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args = parser.parse_args()
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pdf_inputs = parse_inputs(args)
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main(pdf_inputs, args.output)
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