File size: 1,903 Bytes
087f8f8 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 | """Clean and merge PDF documents before ingestion."""
import argparse
import os
import re
import fitz
from fpdf import FPDF
from pypdf import PdfReader, PdfWriter
def merge_pdfs(pdf_list: list[str], output_path: str) -> None:
writer = PdfWriter()
for pdf_file in pdf_list:
reader = PdfReader(pdf_file)
for page in reader.pages:
writer.add_page(page)
with open(output_path, "wb") as output_file:
writer.write(output_file)
def clean_text(text: str) -> str:
text = re.sub(r"[^\x00-\x7F]+", " ", text)
text = re.sub(r"\s+", " ", text)
return text.strip()
class CleanPDF(FPDF):
def chapter_body(self, text: str) -> None:
self.set_font("Arial", "", 11)
self.multi_cell(0, 10, text)
def create_cleaned_pdf(input_pdf_path: str, output_pdf_path: str) -> None:
doc = fitz.open(input_pdf_path)
cleaned_text = ""
for page in doc:
cleaned_text += clean_text(page.get_text()) + "\n\n"
pdf = CleanPDF()
pdf.add_page()
pdf.set_auto_page_break(auto=True, margin=15)
pdf.chapter_body(cleaned_text)
pdf.output(output_pdf_path)
print(f"Saved cleaned PDF: {output_pdf_path}")
def main() -> None:
parser = argparse.ArgumentParser(description="Merge and clean PDF files")
parser.add_argument("--inputs", nargs="+", required=True, help="Input PDF paths")
parser.add_argument("--output_dir", type=str, required=True, help="Output directory")
parser.add_argument("--name", type=str, default="cleaned_document")
args = parser.parse_args()
os.makedirs(args.output_dir, exist_ok=True)
merged_path = os.path.join(args.output_dir, f"{args.name}_merged.pdf")
cleaned_path = os.path.join(args.output_dir, f"{args.name}_cleaned.pdf")
merge_pdfs(args.inputs, merged_path)
create_cleaned_pdf(merged_path, cleaned_path)
if __name__ == "__main__":
main()
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