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# Copyright (c) 2020, Joseph Flack
# License: MIT License
import ezdxf
from ezdxf.document import Drawing
# ------------------------------------------------------------------------------
# encode and decode DXF documents as base64 data for upload and download in web
# applications
# ------------------------------------------------------------------------------
def get_dxf_doc_from_upload_data(data: bytes) -> Drawing:
"""
This function turns the DXF data provided by Dash Plotly upload component
into an `ezdxf` DXF document. Dash plotly upload component only provides
base 64 encoded data.
Args:
data: DXF document uploaded as base64 encoded data
Returns:
DXF document as Drawing() object
"""
# Remove the mime-type and encoding info from data
# example: data:application/octet-stream;base64,OTk5DQpkeGZydyAwLjYuMw0KICAwDQpTRUNUSU9ODQogIDINCkhFQURFUg0KICA...
_, data = data.split(b",")
return ezdxf.decode_base64(data)
def encode_base64(doc: Drawing) -> bytes:
return b"data:application/octet-stream;base64," + doc.encode_base64()
if __name__ == "__main__":
data = encode_base64(ezdxf.new())
doc = get_dxf_doc_from_upload_data(data)
print(doc.acad_release)
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