50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
# Copyright (c) 2025 Patrick Motsch
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# All rights reserved.
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from typing import Any, Dict, List
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import json
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from modules.datamodels.datamodelExtraction import ContentPart
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from ..subUtils import makeId
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from ..subRegistry import Extractor
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class JsonExtractor(Extractor):
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"""
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Extractor for JSON files.
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Supported formats:
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- MIME types: application/json
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- File extensions: .json
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- Special handling: Validates JSON format, falls back to text if invalid
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"""
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def detect(self, fileName: str, mimeType: str, headBytes: bytes) -> bool:
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return mimeType == "application/json" or (fileName or "").lower().endswith(".json")
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def getSupportedExtensions(self) -> list[str]:
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"""Return list of supported file extensions."""
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return [".json"]
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def getSupportedMimeTypes(self) -> list[str]:
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"""Return list of supported MIME types."""
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return ["application/json"]
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def extract(self, fileBytes: bytes, context: Dict[str, Any]) -> List[ContentPart]:
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mimeType = context.get("mimeType") or "application/json"
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text = fileBytes.decode("utf-8", errors="replace")
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# verify JSON is well-formed; fall back to text if not
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try:
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json.loads(text)
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except Exception:
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pass
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return [ContentPart(
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id=makeId(),
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parentId=None,
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label="main",
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typeGroup="structure",
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mimeType=mimeType,
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data=text,
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metadata={"size": len(fileBytes)}
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)]
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