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| from io import StringIO | |
| import core.pipelines as pipelines_functions | |
| from inspect import getmembers, isfunction | |
| from newspaper import Article | |
| from PyPDF2 import PdfFileReader | |
| import streamlit as st | |
| import pandas as pd | |
| import pytesseract | |
| from PIL import Image | |
| def get_pipelines(): | |
| pipeline_names, pipeline_funcs = list( | |
| zip(*getmembers(pipelines_functions, isfunction)) | |
| ) | |
| pipeline_names = [ | |
| " ".join([n.capitalize() for n in name.split("_")]) for name in pipeline_names | |
| ] | |
| return pipeline_names, pipeline_funcs | |
| def extract_text_from_url(url: str): | |
| article = Article(url) | |
| article.download() | |
| article.parse() | |
| return article.text | |
| def extract_text_from_file(file): | |
| # read text file | |
| if file.type == "text/plain": | |
| # To convert to a string based IO: | |
| stringio = StringIO(file.getvalue().decode("utf-8")) | |
| # To read file as string: | |
| file_text = stringio.read() | |
| return file_text | |
| # read pdf file | |
| elif file.type == "application/pdf": | |
| pdfReader = PdfFileReader(file) | |
| count = pdfReader.numPages | |
| all_text = "" | |
| for i in range(count): | |
| try: | |
| page = pdfReader.getPage(i) | |
| all_text += page.extractText() | |
| except: | |
| continue | |
| file_text = all_text | |
| return file_text | |
| # read csv file | |
| elif file.type == "text/csv": | |
| csv = pd.read_csv(file) | |
| # get columns of type string | |
| string_columns = csv.select_dtypes(include=["object"]).columns | |
| # get data from columns and join it together | |
| file_text = "" | |
| for row in csv[string_columns].values.tolist(): | |
| # remove NaNs | |
| row = [x for x in row if str(x) != "nan"] | |
| for column in row: | |
| txt = "" | |
| if isinstance(column, list): | |
| try: | |
| txt = " ".join(column) | |
| except: | |
| continue | |
| elif isinstance(column, str): | |
| txt = column | |
| else: | |
| continue | |
| file_text += " " + txt | |
| return file_text | |
| # read image file (OCR) | |
| elif file.type == "image/jpeg": | |
| return pytesseract.image_to_string(Image.open(file)) | |
| else: | |
| st.warning(f"File type {file.type} not supported") | |
| return None | |