import PyPDF2
import docx

def load_txt(file_path):
    with open(file_path, "r", encoding="utf-8") as f:
        return f.read()

def load_pdf(file_path):
    text = ""
    with open(file_path, "rb") as f:
        reader = PyPDF2.PdfReader(f)
        for page in reader.pages:
            if page.extract_text():
                text += page.extract_text()
    return text

def load_docx(file_path):
    doc = docx.Document(file_path)
    return "\n".join([p.text for p in doc.paragraphs])