o i:(@sdZddlmZddlZddlmZddlmZddlm Z m Z m Z m Z m Z e r.ddlmZeeedBedBedBfZe dd d ZGd d d e ZGd dde ZGdd d ZGdddeZde de defddZGdddeZdS)zdedefd d!Zd?d#ed$edefd%d&Zdeeeffd'd(Zdefd)d*Zdefd+d,Zejfd-ed.edefd/d0Zdefd1d2Z d3ee!Be"Bdefd4d5Z#d6eddfd7d8Z$d9eddfd:d;Z%d9eddfd<HL2H) isinstancebool TypeErrorr<r r:rpack _us_packerunpack _us_unpacker _ul_packer _ul_unpacker _tag_packer _tag_unpacker)rr? endiannessrrrr=xs cCr9)zsGet/set the VR mode for encoding/decoding. ``True`` for implicit VR and ``False`` for explicit VR. _implicit_vrz!.is_implicit_VR' has not been set)r2r;r<r rPrrrris_implicit_VRr>zDicomIO.is_implicit_VRcCs*t|tstdt|jd||_dS)Nr@z.is_implicit_VR' must be bool)rDrErFr<r rP)rr?rrrrQs  cC|jS)zReturn the value of the :attr:`~pydicom.filebase.DicomIO.parent`'s ``name`` attribute, or ``None`` if no such attribute. r1rrrrr-sz DicomIO.namer-cCs ||_dSrrS)rr-rrrr-s cCrR)z'Return the buffer object being wrapped.)r/rrrrparentszDicomIO.parentrcC$tdt|jdt|jjd)zRead up to `size` bytes from the buffer and return them. If `size` is unspecified, all bytes until EOF are returned. Fewer than `size` bytes may be returned if the operating system call returns fewer than `size` bytes. r@' cannot be used with 'z': object has no read() methodrFr<r r/rrrrrs  z DicomIO.readlength nr_retriescCs||}t||kr |St|}d}t|}|kr8||kr8||||7}|d7}t|}|kr8||ks||kr@t|Std|d|d||d)a9Return `length` bytes read from the buffer. Parameters ---------- length : int The number of bytes to be read. If ``None`` (default) then read all the bytes available. nr_retries : int, optional The number of tries to read data when the number of bytes read from the buffer is less than `length`. Default ``3``. Returns ------- bytes The read data. Raises ------ EOFError If unable to read `length` bytes. rzUnexpected end of file. Read z bytes of z! expected starting at position 0xx)rlenr*r$EOFErrorr)rrZr[ bytes_readattempts num_bytesrrr read_exacts   zDicomIO.read_exactcCsttttf||dS)z.Return a DICOM tag value read from the buffer.)rtupler#rNrcrrrrread_tags zDicomIO.read_tagcCtt||ddS)z'Return a UL value read from the buffer.rdr)rr#rLrrrrrread_ULzDicomIO.read_ULcCrg)z'Return a US value read from the buffer.r)rr#rJrrrrrread_USrizDicomIO.read_USrrcCt)zChange the buffer position to the given byte `offset`, relative to the position indicated by `whence` and return the new absolute position. NotImplementedErrorrrrrrsz DicomIO.seekcCrl)z0Return the current stream position of the bufferrmrrrrrsz DicomIO.tellr&cCrV)zfWrite the bytes-like object `b` to the buffer and return the number of bytes written. r@rWz': object has no write() methodrXr'rrrr(s  z DicomIO.writetagcCs|||d?|d@dS)z Write a DICOM tag to the buffer.iN)r(rM)rrorrr write_tagszDicomIO.write_tagvalcC|||dS)zWrite a UL value to the buffer.N)r(rKrrrrrrwrite_ULzDicomIO.write_ULcCrs)zWrite a US value to the buffer.N)r(rHrtrrrwrite_US rvzDicomIO.write_US)rU)rY)'r r!r"__doc__rr%r3rr.r r6 ExitExceptionr8propertyrEr=setterrQstrr-rTr#r$rrcrerfrhrkosSEEK_SETrrr*r+r(rqrurwrrrrr &s>7   ) c@seZdZdZdS) DicomFileLikezWrapper for file-likes to simplify encoding/decoding DICOM datasets. See Also -------- :class:`~pydicom.filebase.DicomIO` :class:`~pydicom.filebase.DicomBytesIO` N)r r!r"rxrrrrrsrr4r5rcOstt|i|S)zKReturn an opened :class:`~pydicom.filebase.DicomFileLike` from a file-like.)ropen)r4r5rrr DicomFilesrcs4eZdZdZddeeBeBddffdd ZZS) DicomBytesIOzWrapper for :class:`io.BytesIO` to simplify encoding/decoding DICOM datasets. See Also -------- :class:`~pydicom.filebase.DicomIO` :class:`~pydicom.filebase.DicomFileLike` initial_bytesrNcs t|}t||j|_dS)zCreate a new DicomBytesIO instance. Parameters ---------- buffer : bytes | bytearray | memoryview, optional The buffer to write to or read from, default is an empty buffer. N)rsuperr3getvalue)rrr, __class__rrr3(s  zDicomBytesIO.__init__)r) r r!r"rxr$r*r+r3 __classcell__rrrrrs(r)rxiorr}structrtypesrtypingrrrrr collections.abcr rer< BaseExceptionryr rr%r rrrrrrrs&      i