pydicom.fileutil.length_of_undefined_length

pydicom.fileutil.length_of_undefined_length(fp: BinaryIO, delimiter: BaseTag, is_little_endian: bool, read_size: int = 128, rewind: bool = True) → int | None

Search through the file to find the delimiter and return the length of the data element.

Parameters:

• fp (file-like) – The file-like to read.

• delimiter – See find_delimiter() for parameter info.

• is_little_endian (bool) – True if little endian, False otherwise.

• read_size (int) – See find_bytes() for parameter info.

• rewind (bool) – Flag to rewind to initial position after searching.

Returns:

Byte offset to the delimiter.

Return type:

int

Notes

Note the data element that the delimiter starts is not read here, the calling routine must handle that. Delimiter must be 4 bytes long.