[Feature]: Unstructured File Loader Support - USF (#815)

embedchain/chunkers/unstructured_file.py

@@ -0,0 +1,22 @@
+from typing import Optional
+
+from langchain.text_splitter import RecursiveCharacterTextSplitter
+
+from embedchain.chunkers.base_chunker import BaseChunker
+from embedchain.config.add_config import ChunkerConfig
+from embedchain.helper.json_serializable import register_deserializable
+
+
+@register_deserializable
+class UnstructuredFileChunker(BaseChunker):
+    """Chunker for Unstructured file."""
+
+    def __init__(self, config: Optional[ChunkerConfig] = None):
+        if config is None:
+            config = ChunkerConfig(chunk_size=1000, chunk_overlap=0, length_function=len)
+        text_splitter = RecursiveCharacterTextSplitter(
+            chunk_size=config.chunk_size,
+            chunk_overlap=config.chunk_overlap,
+            length_function=config.length_function,
+        )
+        super().__init__(text_splitter)

embedchain/data_formatter/data_formatter.py

@@ -6,6 +6,7 @@ from embedchain.chunkers.json import JSONChunker
 from embedchain.chunkers.mdx import MdxChunker
 from embedchain.chunkers.notion import NotionChunker
 from embedchain.chunkers.pdf_file import PdfFileChunker
+from embedchain.chunkers.unstructured_file import UnstructuredFileChunker
 from embedchain.chunkers.qna_pair import QnaPairChunker
 from embedchain.chunkers.sitemap import SitemapChunker
 from embedchain.chunkers.table import TableChunker
@@ -30,6 +31,7 @@ from embedchain.loaders.sitemap import SitemapLoader
 from embedchain.loaders.web_page import WebPageLoader
 from embedchain.loaders.xml import XmlLoader
 from embedchain.loaders.youtube_video import YoutubeVideoLoader
+from embedchain.loaders.unstructured_file import UnstructuredLoader
 from embedchain.models.data_type import DataType
 
 
@@ -77,6 +79,7 @@ class DataFormatter(JSONSerializable):
             DataType.CSV: CsvLoader,
             DataType.MDX: MdxLoader,
             DataType.IMAGES: ImagesLoader,
+            DataType.UNSTRUCTURED: UnstructuredLoader,
             DataType.JSON: JSONLoader,
         }
         lazy_loaders = {DataType.NOTION}
@@ -119,6 +122,7 @@ class DataFormatter(JSONSerializable):
             DataType.MDX: MdxChunker,
             DataType.IMAGES: ImagesChunker,
             DataType.XML: XmlChunker,
+            DataType.UNSTRUCTURED: UnstructuredFileChunker,
             DataType.JSON: JSONChunker,
         }
         if data_type in chunker_classes:

embedchain/loaders/unstructured_file.py

@@ -0,0 +1,40 @@
+import hashlib
+
+try:
+    from langchain.document_loaders import UnstructuredFileLoader
+except ImportError:
+    raise ImportError(
+        'PDF File requires extra dependencies. Install with `pip install --upgrade "embedchain[dataloaders]"`'
+    ) from None
+from embedchain.helper.json_serializable import register_deserializable
+from embedchain.loaders.base_loader import BaseLoader
+from embedchain.utils import clean_string
+
+
+@register_deserializable
+class UnstructuredLoader(BaseLoader):
+    def load_data(self, url):
+        """Load data from a Unstructured file."""
+        loader = UnstructuredFileLoader(url)
+        data = []
+        all_content = []
+        pages = loader.load_and_split()
+        if not len(pages):
+            raise ValueError("No data found")
+        for page in pages:
+            content = page.page_content
+            content = clean_string(content)
+            meta_data = page.metadata
+            meta_data["url"] = url
+            data.append(
+                {
+                    "content": content,
+                    "meta_data": meta_data,
+                }
+            )
+            all_content.append(content)
+        doc_id = hashlib.sha256((" ".join(all_content) + url).encode()).hexdigest()
+        return {
+            "doc_id": doc_id,
+            "data": data,
+        }

embedchain/models/data_type.py

@@ -25,6 +25,7 @@ class IndirectDataType(Enum):
     CSV = "csv"
     MDX = "mdx"
     IMAGES = "images"
+    UNSTRUCTURED = 'unstructured'
     JSON = "json"
 
 
@@ -50,4 +51,5 @@ class DataType(Enum):
     MDX = IndirectDataType.MDX.value
     QNA_PAIR = SpecialDataType.QNA_PAIR.value
     IMAGES = IndirectDataType.IMAGES.value
+    UNSTRUCTURED = IndirectDataType.UNSTRUCTURED.value
     JSON = IndirectDataType.JSON.value