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DocumentIngestor

Bases: BaseComponent

Ingest common office document types into Document for indexing

Document types
  • pdf
  • xlsx, xls
  • docx, doc

Parameters:

Name Type Description Default
pdf_mode

mode for pdf extraction, one of "normal", "mathpix", "ocr" - normal: parse pdf text - mathpix: parse pdf text using mathpix - ocr: parse pdf image using flax

 required
doc_parsers

list of document parsers to parse the document

 required
text_splitter

splitter to split the document into text nodes

 required
override_file_extractors

override file extractors for specific file extensions The default file extractors are stored in KH_DEFAULT_FILE_EXTRACTORS

 required
Source code in libs/kotaemon/kotaemon/indices/ingests/files.py 
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class DocumentIngestor(BaseComponent):
    """Ingest common office document types into Document for indexing

    Document types:
        - pdf
        - xlsx, xls
        - docx, doc

    Args:
        pdf_mode: mode for pdf extraction, one of "normal", "mathpix", "ocr"
            - normal: parse pdf text
            - mathpix: parse pdf text using mathpix
            - ocr: parse pdf image using flax
        doc_parsers: list of document parsers to parse the document
        text_splitter: splitter to split the document into text nodes
        override_file_extractors: override file extractors for specific file extensions
            The default file extractors are stored in `KH_DEFAULT_FILE_EXTRACTORS`
    """

    pdf_mode: str = "normal"  # "normal", "mathpix", "ocr", "multimodal"
    doc_parsers: list[BaseDocParser] = Param(default_callback=lambda _: [])
    text_splitter: BaseSplitter = TokenSplitter.withx(
        chunk_size=1024,
        chunk_overlap=256,
        separator="\n\n",
        backup_separators=["\n", ".", " ", "\u200B"],
    )
    override_file_extractors: dict[str, Type[BaseReader]] = {}

    def _get_reader(self, input_files: list[str | Path]):
        """Get appropriate readers for the input files based on file extension"""
        file_extractors: dict[str, BaseReader] = {
            ext: reader for ext, reader in KH_DEFAULT_FILE_EXTRACTORS.items()
        }
        for ext, cls in self.override_file_extractors.items():
            file_extractors[ext] = cls()

        if self.pdf_mode == "normal":
            file_extractors[".pdf"] = PDFReader()
        elif self.pdf_mode == "ocr":
            file_extractors[".pdf"] = OCRReader()
        elif self.pdf_mode == "multimodal":
            file_extractors[".pdf"] = AdobeReader()
        else:
            file_extractors[".pdf"] = MathpixPDFReader()

        main_reader = DirectoryReader(
            input_files=input_files,
            file_extractor=file_extractors,
        )

        return main_reader

    def run(self, file_paths: list[str | Path] | str | Path) -> list[Document]:
        """Ingest the file paths into Document

        Args:
            file_paths: list of file paths or a single file path

        Returns:
            list of parsed Documents
        """
        if not isinstance(file_paths, list):
            file_paths = [file_paths]

        documents = self._get_reader(input_files=file_paths)()
        print(f"Read {len(file_paths)} files into {len(documents)} documents.")
        nodes = self.text_splitter(documents)
        print(f"Transform {len(documents)} documents into {len(nodes)} nodes.")
        self.log_progress(".num_docs", num_docs=len(nodes))

        # document parsers call
        if self.doc_parsers:
            for parser in self.doc_parsers:
                nodes = parser(nodes)

        return nodes

run 

1
run(file_paths)

Ingest the file paths into Document

Parameters:

Name Type Description Default
file_paths list[str | Path] | str | Path

list of file paths or a single file path

 required

Returns:

Type Description
list[Document]

list of parsed Documents
Source code in libs/kotaemon/kotaemon/indices/ingests/files.py 
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def run(self, file_paths: list[str | Path] | str | Path) -> list[Document]:
    """Ingest the file paths into Document

    Args:
        file_paths: list of file paths or a single file path

    Returns:
        list of parsed Documents
    """
    if not isinstance(file_paths, list):
        file_paths = [file_paths]

    documents = self._get_reader(input_files=file_paths)()
    print(f"Read {len(file_paths)} files into {len(documents)} documents.")
    nodes = self.text_splitter(documents)
    print(f"Transform {len(documents)} documents into {len(nodes)} nodes.")
    self.log_progress(".num_docs", num_docs=len(nodes))

    # document parsers call
    if self.doc_parsers:
        for parser in self.doc_parsers:
            nodes = parser(nodes)

    return nodes