filetxt/file2text/loader.py
2025-05-14 03:54:26 +00:00

178 lines
5.5 KiB
Python

import os
import codecs
from datetime import datetime
from langchain_community.document_loaders.csv_loader import CSVLoader
from langchain_community.document_loaders.text import TextLoader
from docx import Document
from ebooklib import epub
from bs4 import BeautifulSoup
from pptx import Presentation
from openpyxl import load_workbook
import mobi
import PyPDF2
import html2text
class MyMobiLoader:
def __init__(self, file_path):
self.file_path = file_path
def load(self):
tempdir, filepath = mobi.extract(self.file_path)
with codecs.open(filepath, "r", "utf-8") as f:
content=f.read()
return html2text.html2text(content)
class MyChmLoader:
def __init__(self, file_path):
self.filepath = file_path
self.chm_file = None
def load(self):
"""Reads the CHM file and returns concatenated text from all text/html entries."""
self.chm_file = CHM.CHMFile(self.filepath)
content = []
def callback(chm_item):
if chm_item[0].endswith(('.html', '.htm', '.txt')):
try:
data = self.chm_file.read_file(chm_item[0])
if data:
content.append(data.decode('utf-8', errors='ignore'))
except Exception:
pass
return True
self.chm_file.walk(callback)
return '\n'.join(content)
class MyPdfLoader:
def __init__(self, file_path, **kw):
self.filepath = file_path
self.reader = None
def load(self):
"""Reads the PDF file and returns all text as a single string."""
text = ''
with open(self.filepath, 'rb') as file:
self.reader = PyPDF2.PdfReader(file)
for page in self.reader.pages:
text += page.extract_text() or ''
return ' '.join(text.split('\t'))
class MyDocLoader:
def __init__(self, file_path):
self.filepath = file_path
def load(self):
"""Extract plain text from a .doc file using python-doc."""
with open(self.filepath, 'rb') as f:
document = python_doc.Document(f)
return document.text()
class MyDocxLoader:
def __init__(self, file_path):
self.filepath = file_path
self.document = None
def load(self):
"""Reads the .docx file and returns the full text as a single string."""
self.document = Document(self.filepath)
text = '\n'.join([para.text for para in self.document.paragraphs])
return text
class MyPptLoader:
def __init__(self, file_path):
self.filepath = file_path
def load(self):
prs = Presentation(self.filepath)
text = []
for slide in prs.slides:
for shape in slide.shapes:
if hasattr(shape, "text"):
text.append(shape.text)
return "\n".join(text)
class MyCsvLoader(CSVLoader):
def load(self):
docs = super().load()
return ' '.join([d.page_content for d in docs])
class MyExcelLoader:
def __init__(self, file_path):
self.filepath = file_path
self.workbook = None
def load(self):
"""Reads all sheets in the Excel file and returns the content as a string."""
self.workbook = load_workbook(filename=self.filepath, data_only=True)
content = []
for sheet in self.workbook.worksheets:
content.append(f"--- Sheet: {sheet.title} ---")
for row in sheet.iter_rows(values_only=True):
row_text = '\t'.join(str(cell) if cell is not None else '' for cell in row)
content.append(row_text)
return '\n'.join(content)
class MyEpubLoader:
def __init__(self, file_path):
self.filepath = file_path
self.book = None
def load(self):
"""Reads the EPUB file and returns all text content as a string."""
self.book = epub.read_epub(self.filepath)
content = []
for item in self.book.get_items():
if isinstance(item, epub.EpubHtml):
soup = BeautifulSoup(item.get_content(), 'html.parser')
text = soup.get_text()
content.append(text.strip())
return '\n\n'.join(content)
class MyTextLoader(TextLoader):
def load(self):
docs = super().load()
return '\n'.join([d.page_content for d in docs])
def fileloader(file_path):
# Load the PDF file and split the data into chunks
data = None
if file_path.lower().endswith('.pdf'):
loader = MyPdfLoader(file_path=file_path)
elif file_path.lower().endswith('.docx'):
loader = MyDocxLoader(file_path=file_path)
elif file_path.lower().endswith('.doc'):
raise Exception(f'not supported file({file_path}')
# loader = MyDocLoader(file_path=file_path)
elif file_path.lower().endswith('.pptx') or file_path.lower().endswith('.pptx'):
loader = MyPptLoader(file_path=file_path)
elif file_path.lower().endswith('.xlsx') or file_path.lower().endswith('.xls'):
loader = MyExcelLoader(file_path=file_path)
elif file_path.lower().endswith('.csv'):
loader = MyCsvLoader(file_path=file_path)
elif file_path.lower().endswith('.epub'):
loader = MyEpubLoader(file_path=file_path)
elif file_path.lower().endswith('.chm'):
raise Exception(f'not supported file({file_path}')
# loader = MyChmLoader(file_path=file_path)
elif file_path.lower().endswith('.mobi'):
loader = MyMobiLoader(file_path=file_path)
else:
loader = MyTextLoader(file_path=file_path)
data = loader.load()
return data
if __name__ == '__main__':
import sys
if len(sys.argv) < 2:
print(f'{sys.argv[0]} file\nload a file and get its text')
sys.exit(1)
text = fileloader(sys.argv[1])
print(f'{text}')