o
    Ԧ/fe_                     @  s<  d dl mZ d dlZd dlZd dlZd dlZd dlmZmZm	Z	 ddl
mZ ddlmZ ddlmZ dZd	Zd
Z	 ddddddZ	 dd Zdd Zdd ZG dd de	ZG dd dejZG dd deZG dd dZd1d2d!d"Zd3d4d%d&Zd'd( ZG d)d* d*ZG d+d, d,ZG d-d. d.eZ G d/d0 d0eZ!dS )5    )annotationsN)IOAny
NamedTuple   )Image)	deprecate)is_pathi   i   Fzimage buffer overrun errorzdecoding errorzunknown errorzbad configurationzout of memory error)ic                C  sh   zt j| }W n ty   t| }Y nw |s$|rdnd d|  }|d|r*dnd d7 }t|S )Nencoderdecoderz error z when ZwritingZreadingz image file)r   coreZgetcodecstatusAttributeErrorERRORSgetOSError)errorr   msg r   -lib/python3.10/site-packages/PIL/ImageFile.py_get_oserrorC   s   r   c                 C  s   t dddd t| dd)Nraise_oserror   zIt is only useful for translating error codes returned by a codec's decode() method, which ImageFile already does automatically.)actionFr   )r   r   )r   r   r   r   r   N   s   r   c                 C  s   | d S )N   r   )tr   r   r   	_tilesortX   s   r    c                   @  s.   e Zd ZU ded< ded< ded< ded< d	S )
_TilestrZ
codec_nameztuple[int, int, int, int]extentsintoffsetztuple[Any, ...] | str | NoneargsN)__name__
__module____qualname____annotations__r   r   r   r   r!   ]   s
   
 r!   c                      s^   e Zd ZdZd fdd	Zdd Z fddZd	d
 Zdd Zdd Z	dd Z
dd Z  ZS )	ImageFilez*Base class for image file format handlers.Nc                   s   t    d| _d | _d | _	 d| _d| _t| _t	|r)t
|d| _|| _d| _n	|| _|| _d | _z8z|   W n tttttjfyP } zt||d }~ww | jrb| jd dksb| jd dkrhd}t|W d S  tyz   | jry| j   w )Nr   r   r   rbTznot identified by this driver)super__init__
_min_framecustom_mimetypetilereadonlydecoderconfigMAXBLOCKdecodermaxblockr	   openfpfilename_exclusive_fp_open
IndexError	TypeErrorKeyErrorEOFErrorstructr   SyntaxErrormodesizeBaseExceptionclose)selfr7   r8   vr   	__class__r   r   r.   l   sJ   

"	
zImageFile.__init__c                 C  s,   | j r| j S | jd urtj| j S d S N)r0   formatr   ZMIMEr   upperrE   r   r   r   get_format_mimetype   s
   
zImageFile.get_format_mimetypec                   s   g | _ t | d S rI   )r1   r-   __setstate__)rE   staterG   r   r   rN      s   zImageFile.__setstate__c                 C  s   | j r| j  d| _dS )zCheck file integrityN)r9   r7   rD   rL   r   r   r   verify   s   

zImageFile.verifyc                 C  s  | j du rd}t|tj| }| j s|S d| _| jo"t| j dk}|o*ttd }d}z| j	}d}W n t
yA   | jj}Y nw z| j}d}W n t
yV   | jj}Y nw |r| j d \}}}	}
t|
trl|
ddf}
|dkrt|
dkr|
d | jkr|
d tjv rzSddl}t| j}|j| d|jd	| _W d   n1 sw   Y  |	| jd |
d   | j krd
}t|tj| j| j||	|
| _d}| jrd| j_W n t
ttfy   d| _Y nw |   d}| js| j jt d z| j!}W n t
y	   d}Y nw dd t"#| j dd D | _ | j D ]\}}}	}
||	 t$| j||
| j%}zw|&| j| |j'rJ|(| j |)dd }nW|}	 z|| j*}W n  t+t,j-fyt } zt.riW Y d}~n8d}t||d}~ww |st.r|n%dt| d}t||| }|)|\}}|dk rn||d }qMW |/  q|/  w g | _ || _0| 1  | j2r| j3r| j4  d| _| jst.s|dk rt5|ddtj| S )z"Load image data based on tile listNzcannot load this imager   Zpypy_version_infor   Fraw   )accesszbuffer is not large enoughr   key    c                 S  s   g | ]
\}}t |d  qS )r
   )list).0_Ztilesr   r   r   
<listcomp>   s    
z"ImageFile.load.<locals>.<listcomp>c                 S  s   | d | d | d fS )Nr   r   rR   r   )r1   r   r   r   <lambda>   s    z ImageFile.load.<locals>.<lambda>Tzimage file is truncatedzimage file is truncated (z bytes not processed)r   )6r1   r   r   loadmapr8   lenhasattrsys	load_readr   r7   read	load_seekseek
isinstancer"   rA   Z	_MAPMODESmmapr6   filenoZACCESS_READrB   r   Z
map_bufferimZpaletteZdirtyImportErrorload_preparesortr    Ztile_prefix	itertoolsgroupby_getdecoderr3   setimagepulls_fdsetfddecoder5   r;   r?   r   LOAD_TRUNCATED_IMAGEScleanupr2   load_endr9   Z!_close_exclusive_fp_after_loadingrD   r   )rE   r   ZpixelZuse_mmapr2   rb   rd   Zdecoder_namer#   r%   r&   rf   r7   Zerr_codeprefixr   bsenr   r   r   r\      s   


 





zImageFile.loadc                 C  sT   | j r| j j| jks| j j| jkrtj| j| j| _ | jdkr(tj|  d S d S )NP)rh   rA   rB   r   r   newr\   rL   r   r   r   rj   :  s
   "
zImageFile.load_preparec                 C  s   d S rI   r   rL   r   r   r   ru   B  s   zImageFile.load_endc                 C  sF   || j k st| dr| jd u s|| j| j  krd}t||  |kS )N	_n_framesz attempt to seek outside sequence)r/   r_   r}   Zn_framesr>   tell)rE   framer   r   r   r   _seek_checkN  s   

zImageFile._seek_check)NN)r'   r(   r)   __doc__r.   rM   rN   rP   r\   rj   ru   r   __classcell__r   r   rG   r   r+   i   s    0	 r+   c                   @  s(   e Zd ZdZdd Zdd Zdd ZdS )	StubImageFilez
    Base class for stub image loaders.

    A stub loader is an image loader that can identify files of a
    certain format, but relies on external code to load the file.
    c                 C     d}t |)Nz+StubImageFile subclass must implement _openNotImplementedErrorrE   r   r   r   r   r:   f  s   zStubImageFile._openc                 C  sT   |   }|d u rd| j d}t||| }|d usJ |j| _|j| _| S )Nzcannot find loader for this z file)_loadrJ   r   r\   rH   __dict__)rE   loaderr   imager   r   r   r\   j  s   
zStubImageFile.loadc                 C  r   )z (Hook) Find actual image loader.z+StubImageFile subclass must implement _loadr   r   r   r   r   r   v  s   zStubImageFile._loadN)r'   r(   r)   r   r:   r\   r   r   r   r   r   r   ^  s
    r   c                   @  sZ   e Zd ZU dZdZdZded< dZdZdZ	dZ
dd Zdd	 Zd
d Zdd Zdd ZdS )Parserzj
    Incremental image parser.  This class implements the standard
    feed/close consumer interface.
    NzImage.Image | Noner   r   c                 C  s   | j du s	J ddS )z
        (Consumer) Reset the parser.  Note that you can only call this
        method immediately after you've created a parser; parser
        instances cannot be reused.
        Nzcannot reuse parsers)datarL   r   r   r   reset  s   zParser.resetc                 C  s  | j rdS | jdu r|| _n| j| | _| jri| jdkr=tt| j| j}| j|d | _| j| | _| jdks;| js=dS | j| j\}}|dk r_d| _d| _ |dk r]d| _t|dddS | j|d | _dS | jrndS zt	
| j}t|}W d   n1 sw   Y  W n
 ty   Y dS w t|dpt|d}|st|jdkrd| _n:|  |jd \}}}	}
g |_t|j||
|j| _| j|j| |	| _| jt| jkr| j| jd | _d| _|| _dS )z
        (Consumer) Feed data to the parser.

        :param data: A string buffer.
        :exception OSError: If the parser failed to parse the image file.
        Nr   r   Fr   rc   ra   )finishedr   r   r%   minr^   rr   r   r   ioBytesIOr   r6   r   r_   r1   rj   rn   rA   r3   ro   rh   )rE   r   skiprz   ry   r7   rh   flagdoar   r   r   feed  sX   	


zParser.feedc                 C  s   | S rI   r   rL   r   r   r   	__enter__  s   zParser.__enter__c                 G  s   |    d S rI   )rD   rE   r&   r   r   r   __exit__  s   zParser.__exit__c              	   C  s   | j r| d d | _| _ | jsd}t|| js d}t|| jrOt| j}zt	|| _W | j
  n| j
  w W d   | jS 1 sJw   Y  | jS )a  
        (Consumer) Close the stream.

        :returns: An image object.
        :exception OSError: If the parser failed to parse the image file either
                            because it cannot be identified or cannot be
                            decoded.
        rV   Nzimage was incompletezcannot parse this image)r   r   r   r   r   r   r   r   r   r6   r\   )rE   r   r7   r   r   r   rD     s$   


zParser.close)r'   r(   r)   r   Zincrementalr   r*   r   r   r%   r   r   r   r   r   rD   r   r   r   r   r   |  s   
 Lr   returnNonec              
   C  s   |    t| dsd| _|jtd tt|| jd d }z| }|	  t
| |||| W n ttjfyM } zt
| |||d| W Y d}~nd}~ww t|drY|	  dS dS )zHelper to save image based on tile list

    :param im: Image object.
    :param fp: File object.
    :param tile: Tile list.
    :param bufsize: Optional buffer size
    encoderconfigr   rT   r      Nflush)r\   r_   r   rk   r    maxr4   rB   rg   r   _encode_tiler   r   UnsupportedOperation)rh   r7   r1   bufsizefhexcr   r   r   _save  s    	

r   r1   list[_Tile]c              	   C  s   |D ]c\}}}}	|dkr| | t| j||	| j}
zE|
| j| |
jr2|
| |
	 d }n|rJ	 |

|dd  \}}|| |rHnq5n|
||}|dk r[t|dd|W |
  q|
  w d S )Nr   r   Tr   )rd   r   Z_getencoderrA   r   ro   rh   	pushes_fdrq   encode_to_pyfdencodewriteencode_to_filer   rt   )rh   r7   r1   r   r   r   Zencoder_namer#   r%   r&   r   errcoder   r   r   r   r   !  s.   


r   c                 C  s   |dkrdS |t kr| |}t||k rd}t||S g }|}|dkr?| t|t }|s0n|| |t|8 }|dks%tdd |D |k rPd}t|d|S )a  
    Reads large blocks in a safe way.  Unlike fp.read(n), this function
    doesn't trust the user.  If the requested size is larger than
    SAFEBLOCK, the file is read block by block.

    :param fp: File handle.  Must implement a <b>read</b> method.
    :param size: Number of bytes to read.
    :returns: A string containing <i>size</i> bytes of data.

    Raises an OSError if the file is truncated and the read cannot be completed

    r   rV   zTruncated File Readc                 s  s    | ]}t |V  qd S rI   )r^   )rX   r   r   r   r   	<genexpr>Y  s    z_safe_read.<locals>.<genexpr>)	SAFEBLOCKrb   r^   r   r   appendsumjoin)r7   rB   r   r   Zremaining_sizeblockr   r   r   
_safe_read<  s*   


r   c                   @  s   e Zd Zdd Zdd ZdS )PyCodecStatec                 C  s   d| _ d| _d| _d| _d S )Nr   )xsizeysizexoffyoffrL   r   r   r   r.   `  s   
zPyCodecState.__init__c                 C  s    | j | j| j | j | j| j fS rI   )r   r   r   r   rL   r   r   r   r#   f  s    zPyCodecState.extentsN)r'   r(   r)   r.   r#   r   r   r   r   r   _  s    r   c                   @  s@   e Zd ZU ded< dd Zdd Zdd Zd	d
 ZdddZdS )PyCodeczIO[bytes] | Nonefdc                 G  s(   d | _ t | _d | _|| _| | d S rI   )rh   r   rO   r   rA   init)rE   rA   r&   r   r   r   r.   m  s
   zPyCodec.__init__c                 C  
   || _ dS )z
        Override to perform codec specific initialization

        :param args: Array of args items from the tile entry
        :returns: None
        N)r&   r   r   r   r   r   t     
zPyCodec.initc                 C  s   dS )zT
        Override to perform codec specific cleanup

        :returns: None
        Nr   rL   r   r   r   rt   }  s   zPyCodec.cleanupc                 C  r   )z
        Called from ImageFile to set the Python file-like object

        :param fd: A Python file-like object
        :returns: None
        N)r   )rE   r   r   r   r   rq     r   zPyCodec.setfdNc                 C  s   || _ |r|\}}}}nd\}}}}|dkr%|dkr%| j j\| j_| j_n|| j_|| j_|| | j_|| | j_| jjdksE| jjdkrKd}t|| jj| jj | j jd ksg| jj| jj | j jd krmd}t|dS )z
        Called from ImageFile to set the core output image for the codec

        :param im: A core image object
        :param extents: a 4 tuple of (x0, y0, x1, y1) defining the rectangle
            for this tile
        :returns: None
        )r   r   r   r   r   zSize cannot be negativer   z Tile cannot extend outside imageN)rh   rB   rO   r   r   r   r   
ValueError)rE   rh   r#   Zx0Zy0Zx1Zy1r   r   r   r   ro     s$   zPyCodec.setimagerI   )	r'   r(   r)   r*   r.   r   rt   rq   ro   r   r   r   r   r   j  s   
 		r   c                   @  s4   e Zd ZdZdZedd Zdd ZddddZdS )	PyDecoderz
    Python implementation of a format decoder. Override this class and
    add the decoding logic in the :meth:`decode` method.

    See :ref:`Writing Your Own File Codec in Python<file-codecs-py>`
    Fc                 C     | j S rI   )	_pulls_fdrL   r   r   r   rp        zPyDecoder.pulls_fdc                 C     d}t |)a=  
        Override to perform the decoding process.

        :param buffer: A bytes object with the data to be decoded.
        :returns: A tuple of ``(bytes consumed, errcode)``.
            If finished with decoding return -1 for the bytes consumed.
            Err codes are from :data:`.ImageFile.ERRORS`.
        zunavailable in base decoderr   )rE   bufferr   r   r   r   rr        	zPyDecoder.decodeNr   bytesr   r   c                 C  sl   |s| j }t| j d|}|| j| j  ||}|d dkr(d}t||d dkr4d}t|dS )a  
        Convenience method to set the internal image from a stream of raw data

        :param data: Bytes to be set
        :param rawmode: The rawmode to be used for the decoder.
            If not specified, it will default to the mode of the image
        :returns: None
        rQ   r   znot enough image datar   zcannot decode image dataN)	rA   r   rn   ro   rh   rO   r#   rr   r   )rE   r   Zrawmoder   rx   r   r   r   r   
set_as_raw  s   

zPyDecoder.set_as_rawrI   )r   r   r   r   )	r'   r(   r)   r   r   propertyrp   rr   r   r   r   r   r   r     s    
r   c                   @  s8   e Zd ZdZdZedd Zdd Zdd Zd	d
 Z	dS )	PyEncoderz
    Python implementation of a format encoder. Override this class and
    add the decoding logic in the :meth:`encode` method.

    See :ref:`Writing Your Own File Codec in Python<file-codecs-py>`
    Fc                 C  r   rI   )
_pushes_fdrL   r   r   r   r     r   zPyEncoder.pushes_fdc                 C  r   )a   
        Override to perform the encoding process.

        :param bufsize: Buffer size.
        :returns: A tuple of ``(bytes encoded, errcode, bytes)``.
            If finished with encoding return 1 for the error code.
            Err codes are from :data:`.ImageFile.ERRORS`.
        zunavailable in base encoderr   )rE   r   r   r   r   r   r     r   zPyEncoder.encodec                 C  s2   | j sdS | d\}}}|r| j| ||fS )z
        If ``pushes_fd`` is ``True``, then this method will be used,
        and ``encode()`` will only be called once.

        :returns: A tuple of ``(bytes consumed, errcode)``.
            Err codes are from :data:`.ImageFile.ERRORS`.
        )r   r   r   )r   r   r   r   )rE   Zbytes_consumedr   r   r   r   r   r      s   zPyEncoder.encode_to_pyfdc                 C  sB   d}|dkr|  |\}}}|dkr|||d  |dks|S )z
        :param fh: File handle.
        :param bufsize: Buffer size.

        :returns: If finished successfully, return 0.
            Otherwise, return an error code. Err codes are from
            :data:`.ImageFile.ERRORS`.
        r   N)r   r   )rE   r   r   r   statusbufr   r   r   r     s   	zPyEncoder.encode_to_fileN)
r'   r(   r)   r   r   r   r   r   r   r   r   r   r   r   r     s    
r   )r   )r   r   rI   )r1   r   )"Z
__future__r   r   rl   r?   r`   typingr   r   r    r   Z
_deprecater   Z_utilr	   r4   r   rs   r   r   r   r    r!   r+   r   r   r   r   r   r   r   r   r   r   r   r   r   <module>   sH   
 v 
#J2