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60 lines
2.2 KiB
Python
60 lines
2.2 KiB
Python
import os, fitz
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from langchain.document_loaders import PyMuPDFLoader # better UTF support and metadata
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from slugify import slugify
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from ..utils import guid, file_creation_time, write_to_server_documents, move_source
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from ...utils import tokenize
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from unidecode import unidecode
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# Process all PDF-related documents.
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def as_pdf(**kwargs):
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parent_dir = kwargs.get('directory', 'hotdir')
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filename = kwargs.get('filename')
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ext = kwargs.get('ext', '.txt')
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remove = kwargs.get('remove_on_complete', False)
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fullpath = f"{parent_dir}/{filename}{ext}"
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print(f"-- Working {fullpath} --")
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loader = PyMuPDFLoader(fullpath)
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pages = loader.load()
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if len(pages) == 0:
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print(f"{fullpath} parsing resulted in no pages - nothing to do.")
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return(False, f"No pages found for {filename}{ext}!")
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# Set doc to the first page so we can still get the metadata from PyMuPDF but without all the unicode issues.
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doc = pages[0]
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del loader
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del pages
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page_content = ''
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for page in fitz.open(fullpath):
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print(f"-- Parsing content from pg {page.number} --")
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page_content += unidecode(page.get_text('text'))
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if len(page_content) == 0:
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print(f"Resulting page content was empty - no text could be extracted from the document.")
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return(False, f"No text content could be extracted from {filename}{ext}!")
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title = doc.metadata.get('title')
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author = doc.metadata.get('author')
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subject = doc.metadata.get('subject')
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data = {
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'id': guid(),
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'url': "file://"+os.path.abspath(f"{parent_dir}/processed/{filename}{ext}"),
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'title': title if title else f"{filename}{ext}",
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'docAuthor': author if author else 'No author found',
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'description': subject if subject else 'No description found.',
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'docSource': 'pdf file uploaded by the user.',
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'chunkSource': f"{filename}{ext}",
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'published': file_creation_time(fullpath),
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'wordCount': len(page_content), # Technically a letter count :p
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'pageContent': page_content,
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'token_count_estimate': len(tokenize(page_content))
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}
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write_to_server_documents(data, f"{slugify(filename)}-{data.get('id')}")
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move_source(parent_dir, f"{filename}{ext}", remove=remove)
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print(f"[SUCCESS]: {filename}{ext} converted & ready for embedding.\n")
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return(True, None)
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