154 lines
4.0 KiB
Python
154 lines
4.0 KiB
Python
import os
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import codecs
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from datetime import datetime
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from langchain_community.document_loaders.csv_loader import CSVLoader
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from langchain_community.document_loaders.text import TextLoader
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from docx import Document
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from ebooklib import epub
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from bs4 import BeautifulSoup
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from pptx import Presentation
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from openpyxl import load_workbook
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import mobi
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from pypdf import PdfReader
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import html2text
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class BaseLoader:
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def __init__(self, file_path):
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self.filepath = file_path
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def load(self):
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pts = []
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for i, t in self.load_pagetext():
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pts.append(' '.join(t.split('\t')))
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return '\n'.join(pts)
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def load_pagetext(self):
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raise Exception('Not implement')
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class MyMobiLoader(BaseLoader):
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def load_pagetext(self):
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tempdir, filepath = mobi.extract(self.filepath)
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with codecs.open(filepath, "r", "utf-8") as f:
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content=f.read()
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yield (0, html2text.html2text(content))
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class MyPdfLoader(BaseLoader):
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def load_pagetext(self):
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"""Reads the PDF file and returns all text as a single string."""
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reader = PdfReader(self.filepath)
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pts = []
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for i,page in enumerate(reader.pages):
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t = page.extract_text() or ''
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yield (i, t)
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class MyDocxLoader(BaseLoader):
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def load_pagetext(self):
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"""Reads the .docx file and returns the full text as a single string."""
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docx = Document(self.filepath)
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for i, para in enumerate(docx.paragraphs):
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yield (i,para.text)
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class MyPptLoader(BaseLoader):
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def load_pagetext(self):
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prs = Presentation(self.filepath)
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for i, slide in enumerate(prs.slides):
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txts = []
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for shape in slide.shapes:
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if hasattr(shape, "text"):
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txts.append(shape.text)
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yield (i,'\n'.join(txts))
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class MyCsvLoader(BaseLoader):
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def load_pagetext(self):
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loader = CSVLoader(self.filepath)
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docs = loader.load()
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for i, d in enumerate(docs):
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dat = (i, d.page_content)
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yield dat
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class MyExcelLoader(BaseLoader):
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def load_pagetext(self):
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"""Reads all sheets in the Excel file and returns the content as a string."""
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self.workbook = load_workbook(filename=self.filepath, data_only=True)
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content = []
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for i, sheet in enumerate(self.workbook.worksheets):
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txts = []
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for row in sheet.iter_rows(values_only=True):
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row_text = '\t'.join(str(cell) if cell is not None else '' for cell in row)
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txts.append(row_text)
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yield(i, '\n'.join(txts))
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return content
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class MyEpubLoader(BaseLoader):
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def __init__(self, file_path):
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self.filepath = file_path
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self.book = None
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def load_pagetext(self):
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"""Reads the EPUB file and returns all text content as a string."""
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self.book = epub.read_epub(self.filepath)
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for i, item in enumerate(self.book.get_items()):
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if isinstance(item, epub.EpubHtml):
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soup = BeautifulSoup(item.get_content(), 'html.parser')
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text = soup.get_text()
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yield(i, text.strip())
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class MyTextLoader(BaseLoader):
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def load_pagetext(self):
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loader = TextLoader(self.filepath)
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docs = loader.load()
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for i, d in enumerate(docs):
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dat = (i, d.page_content)
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yield dat
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class File2Text:
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all_loaders = {
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'docx':MyDocxLoader,
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'pptx':MyPptLoader,
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'csv':MyCsvLoader,
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'xlsx':MyExcelLoader,
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'pdf':MyPdfLoader,
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'epub':MyEpubLoader,
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'mobi':MyMobiLoader,
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'txt':MyTextLoader
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}
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def __init__(self, filepath):
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self.filepath = filepath
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def load_pagetext(self):
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k = self.filepath.lower().split('.')[-1]
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klass = self.all_loaders.get(k, MyTextLoader)
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loader = klass(self.filepath)
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for d in loader.load_pagetext():
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yield d
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def load(self):
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k = self.filepath.lower().split('.')[-1]
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klass = self.all_loaders.get(k, MyTextLoader)
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loader = klass(self.filepath)
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return loader.load()
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def fileloader(file_path):
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loader = File2Text(file_path)
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return loader.load()
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def filepageloader(file_path):
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loader = File2Text(file_path)
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for d in loader.load_pagetext():
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yield d
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if __name__ == '__main__':
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import sys
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if len(sys.argv) < 2:
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print(f'{sys.argv[0]} file\nload a file and get its text')
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sys.exit(1)
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text = fileloader(sys.argv[1])
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print(f'{text=}')
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"""
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for i, txt in filepageloader(sys.argv[1]):
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print(f'page:{i}\n{txt}\n=======\n')
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"""
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