app.py

import streamlit as st
from PyPDF2 import PdfReader
from langchain.text_splitter import CharacterTextSplitter
from langchain.embeddings import HuggingFaceEmbeddings
from langchain.vectorstores import FAISS


#########################################################    
    
def get_pdf_text(pdf_docs):
    text = ""
    for pdf in pdf_docs:
        pdf_reader = PdfReader(pdf)
        for page in pdf_reader.pages:
            text += page.extract_text()
    return text
#################################################################
def wrap_text_preserve_newlines(text, width=300):
    # Split the input text into lines based on newline characters
    lines = text.split('\n')
    # Wrap each line individually
    wrapped_lines = [textwrap.fill(line, width=width) for line in lines]
    # Join the wrapped lines back together using newline characters
    wrapped_text = '\n'.join(wrapped_lines)
    return wrapped_text
########################################################################
# Text Splitter
def text_split(ducuments):
    text_splitter = CharacterTextSplitter(chunk_size=300, chunk_overlap=20)
    docs = text_splitter.split_documents(documents)
    return docs
######################################################################
# Embeddings
def embeddings_f():
    embeddings = HuggingFaceEmbeddings()
    return embeddings
##########################################################################
#upload pdf    
def pdf_upload():
    pdf_docs=st.file_uploader("Upload your PDF Files",accept_multiple_files=True)
    return pdf_docs
##############################################################################
def show(text):
    text_show=st.write(text)
    return text_show
    
    


def main():
    st.set_page_config(page_title="Multiple pdf chat", page_icon=":books:")
    if st.button("upload show"):
        with st.spinner("showing"):
            #get pdf text
            raw_text=get_pdf_text(pdf_docs)
            show(raw_text)
              
            

                ###############     
    with st.sidebar:
        st.subheader("your document")
        pdf_docs=pdf_upload()
        if st.button("process"):
            with st.spinner("processing"):
                #get pdf text
                raw_text=get_pdf_text(pdf_docs) 
                st.write(raw_text) 
                file=open("T1.txt","w")
                file.write(raw_text)
                file.close()
                ###############  
                   
    

# Press the green button in the gutter to run the script.
if __name__ == '__main__':
    main()