File: //usr/local/lib64/python3.6/site-packages/PIL/__pycache__/ImageFile.cpython-36.pyc
3
Zƍh�R �
@ s� d dl Z d dlZd dlZd dlZddlmZ ddlmZ dZd%Z dZ
d&dd'd
d(d d)dd*diZ dd� Z dd� Z
dd� ZG dd� dej�ZG dd� de�ZG dd � d �Zd+d d �Zd d � ZG d!d"� d"�ZG d#d$� d$�ZdS ),� N� )�Image)�isPathi i Fzimage buffer overrun error� zdecoding error� z
unknown error� zbad configuration� zout of memory errorc C sN yt jj| �}W n tk
r. tj| �}Y nX |s>d| � �}t|d ��d S )Nzdecoder error z when reading image file)r �coreZgetcodecstatus�AttributeError�ERRORS�get�OSError)�error�message� r �9/usr/local/lib64/python3.6/site-packages/PIL/ImageFile.py�
raise_oserror< s
r c C s t jdt� t| �S )Nzdraise_ioerror is deprecated and will be removed in Pillow 9 (2022-01-02). Use raise_oserror instead.)�warnings�warn�DeprecationWarningr )r r r r �
raise_ioerrorF s r c C s | d S )Nr r )�tr r r � _tilesortO s r c sR e Zd ZdZd� fdd� Zdd� Zdd� Zd d
� Zd d � Zd
d� Z dd� Z
� Z S )� ImageFilez*Base class for image file format handlers.Nc s� t � j� d| _d | _d | _d| _f | _t| _t |�rPt
|d�| _ || _ d| _
n|| _ || _ d | _
yhy | j� W n8 tttttjfk
r� } zt|�|�W Y d d }~X nX | j s�| jd dkr�td��W n& tk
r� | j
r�| j j� � Y nX d S )Nr 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)�selfr% r& �v)� __class__r r r \ s<
zImageFile.__init__c C s, | j r | j S | jd k r(tjj| jj� �S d S )N)r �formatr ZMIMEr �upper)r3 r r r �get_format_mimetype� s
z ImageFile.get_format_mimetypec C s | j r| jj� d| _dS )zCheck file integrityN)r' r% r2 )r3 r r r �verify� s
zImageFile.verifyc > C sX | j dkrtd��tjj| �}| j s(|S d| _| jo@t| j �dk}|oPttd� }d}y| j }d}W n t
k
r� | j j }Y nX y| j
}d}W n t
k
r� | j j}Y nX |�r�| j d \}}}} |dko�t| �dko�| d | jko�| d tjk�r�yhddl}
t| j�� } |
j| j� d|
jd �| _W dQ R X tjj| j| j||| �| _d}| j�r^d| j_W n" t
ttfk
�r� d| _Y nX | j � d} | j�s�| j j t d
� y
| j }
W n t
k
�r� d }
Y nX �x$| j D �]\}}}} tj | j|| | j!�}z�||� |j"| j|� |j#�r4|j$| j � |j%d �\}} n�|
}x�y|| j&�}W n> t't(j)fk
�r� } zt*�rlP n
td �|�W Y dd}~X nX |�s�t*�r�P ntd
t|�� d���|| }|j%|�\}} |dk �r�P ||d� }�q:W W d|j+� X �q�W g | _ || _,| j-� | j.�r"| j/�r"| j j0� d| _ | j �rLt* �rL| dk �rLt1| � tjj| �S )z"Load image data based on tile listNzcannot load this imager �pypy_version_infor F�rawr )�access)�key� zimage file is truncatedzimage file is truncated (z bytes not processed)���)2r r
r �load�mapr& �len�hasattr�sys� load_readr
r% �read� load_seek�seekr/ Z _MAPMODES�mmapr$ �filenoZ ACCESS_READr Z
map_bufferr0 �imZpaletteZdirty� ImportError� load_prepare�sortr Z tile_prefix� _getdecoderr! �setimage�pulls_fd�setfd�decoder# r) r- r �LOAD_TRUNCATED_IMAGES�cleanupr �load_endr' Z!_close_exclusive_fp_after_loadingr2 r )r3 ZpixelZuse_mmapr rF rH Z decoder_name�extents�offset�argsrI r% Zerr_code�prefix�decoder�status�b�s�e�nr r r r@ � s�
"
zImageFile.loadc C sR | j s$| j j| jks$| j j| jkr8tjj| j| j�| _ | jdkrNtjj| � d S )N�P)rK r/ r0 r r �newr@ )r3 r r r rM s $
zImageFile.load_preparec C s d S )Nr )r3 r r r rV s zImageFile.load_endc C sD || j k s0t| d�o | jd k r8|| j| j kr8td��| j� |kS )N� _n_framesz attempt to seek outside sequence)r rC rc Zn_framesr, �tell)r3 �framer r r � _seek_check* s
zImageFile._seek_check)NN) �__name__�
__module__� __qualname__�__doc__r r8 r9 r@ rM rV rf �
__classcell__r r )r5 r r Y s / | r c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) �
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 s t d��d S )Nz+StubImageFile subclass must implement _open)�NotImplementedError)r3 r r r r( A s zStubImageFile._openc C sL | j � }|d kr"td| j� d���|j| �}|d k s8t�|j| _|j| _d S )Nz cannot find loader for this z file)�_loadr
r6 r@ �AssertionErrorr5 �__dict__)r3 �loader�imager r r r@ D s
zStubImageFile.loadc C s t d��dS )z (Hook) Find actual image loader.z+StubImageFile subclass must implement _loadN)rm )r3 r r r rn N s zStubImageFile._loadN)rg rh ri rj r( r@ rn r r r r rl 9 s
rl c @ sP e Zd ZdZdZdZdZdZdZdZ dd� Z
dd� Z dd � Z d
d � Z
d d
� ZdS )�Parserzj
Incremental image parser. This class implements the standard
feed/close consumer interface.
Nr c C s | j dkstd��dS )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.
Nzcannot reuse parsers)�dataro )r3 r r r �reset` s z Parser.resetc C s� | j r
dS | jdkr || _n | j| | _| jr�| jdkr|tt| j�| j�}| j|d� | _| j| | _| jdksx| j r|dS | jj| j�\}}|dk r�d| _d| _ |dk r�d| _t|� ndS | j|d� | _n�| jr�n�y&t j
| j��}t j |�}W dQ R X W n t
k
�r Y n�X t|d��p*t|d�}|�sBt|j�dk�rJd| _nv|j� |jd \}}} }
g |_t j|j||
|j�| _| jj|j|� | | _| jt| j�k�r�| j| jd� | _d| _|| _dS )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 rG rE )�finishedrt r[ rX �minrB rS rr r �io�BytesIOr r$ r
rC r rM rO r/ r! rP rK ) r3 rt �skipr` r_ r% rK �flag�d�o�ar r r �feedh sR
z Parser.feedc C s | S )Nr )r3 r r r � __enter__� s zParser.__enter__c G s | j � d S )N)r2 )r3 rY r r r �__exit__� s zParser.__exit__c C sz | j r*| jd� d | _| _ | js*td��| js8td��| jrttj| j��$}ztj |�| _W d| jj
� X W dQ R X | jS )a
(Consumer) Close the stream.
:returns: An image object.
:exception OSError: If the parser failed to parse the image file either
because it cannot be identified or cannot be
decoded.
r> Nzimage was incompletezcannot parse this image) r[ r rt rv r
rr rx ry r r$ r@ )r3 r% r r r r2 � s
z Parser.close)rg rh ri rj � incrementalrr rt r[ rX rv ru r r� r� r2 r r r r rs S s Prs c C s. | j � t| d�sf | _|jtd� tt|| jd d �}y|tj kpP|tj j
k}W n t t fk
rp d}Y nX |r�|j
� dS y|j� }|j
� W n� t tjfk
�rx } z�x�|D ]�\}}} }
tj| j||
| j�}| dkr�|j| � |j| j|� |j�r|j|� |j� \} } n*x(|j|�\} } }
|j|
� | �rP �qW | dk �r\t d| � d��|�|j � q�W W Y dd}~X n�X x�|D ]�\}}} }
tj| j||
| j�}| dk�r�|j| � |j| j|� |j�r�|j|� |j� \} } n |j ||�} | dk �rt d| � d���|j � �q�W t|d ��r*|j
� dS )
z�Helper to save image based on tile list
:param im: Image object.
:param fp: File object.
:param tile: Tile list.
:param bufsize: Optional buffer size
�
encoderconfig)r= r � FNzencoder error z when writing image file�flush) r@ rC r� rN r �maxr" r0 rD �stdout�bufferr
r
r� rJ rx �UnsupportedOperationr Z _getencoderr/ rH rP rK Z pushes_fdrR Zencode_to_pyfd�encode�writerU Zencode_to_file)rK r% r �bufsizer� �fh�excr_ r] r} r~ �lr^ r| r r r �_save� s\
r� c C s� |dkr dS |t kr6| j|�}t|�|k r2td��|S g }x8|dkrr| jt|t ��}|sZP |j|� |t|�8 }q<W tdd� |D ��|k r�td��dj|�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 r> zTruncated File Readc s s | ]}t |�V qd S )N)rB )�.0r| r r r � <genexpr>; s z _safe_read.<locals>.<genexpr>)� SAFEBLOCKrF rB r
rw �append�sum�join)r% r0 rt �blockr r r �
_safe_read s"
r� c @ s e Zd Zdd� Zdd� ZdS )� PyCodecStatec C s d| _ d| _d| _d| _d S )Nr )�xsize�ysize�xoff�yoff)r3 r r r r A s zPyCodecState.__init__c C s | j | j| j | j | j| j fS )N)r� r� r� r� )r3 r r r rW G s zPyCodecState.extentsN)rg rh ri r rW r r r r r� @ s r� c @ s\ e Zd ZdZdZdd� Zdd� Zedd� �Zd d
� Z d d � Z
d
d� Z ddd�Z ddd�Z
dS )� 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 Decoder in Python<file-decoders-py>`
Fc G s( d | _ t� | _d | _|| _| j|� d S )N)rK r� �state�fdr/ �init)r3 r/ rY r r r r U s
zPyDecoder.__init__c C s
|| _ dS )z�
Override to perform decoder specific initialization
:param args: Array of args items from the tile entry
:returns: None
N)rY )r3 rY r r r r� \ s zPyDecoder.initc C s | j S )N)� _pulls_fd)r3 r r r rQ e s zPyDecoder.pulls_fdc C s
t � �dS )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 <0 for the bytes consumed.
Err codes are from :data:`.ImageFile.ERRORS`.
N)rm )r3 r� r r r rS i s zPyDecoder.decodec C s dS )zV
Override to perform decoder specific cleanup
:returns: None
Nr )r3 r r r rU t s zPyDecoder.cleanupc C s
|| _ dS )z�
Called from ImageFile to set the python file-like object
:param fd: A python file-like object
:returns: None
N)r� )r3 r� r r r rR | s zPyDecoder.setfdNc C s� || _ |r|\}}}}n d\}}}}|dkrJ|dkrJ| j j\| j_| j_n(|| j_|| j_|| | j_|| | j_| jjdks�| jjdkr�td��| jj| jj | j jd ks�| jj| jj | j jd kr�td��dS )z�
Called from ImageFile to set the core output image for the decoder
: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 zSize cannot be negativer z Tile cannot extend outside imageN)r r r r )rK r0 r� r� r� r� r� �
ValueError)r3 rK rW Zx0Zy0�x1�y1r r r rP � s zPyDecoder.setimagec C sd |s
| j }tj| j d|�}|j| j| jj� � |j|�}|d dkrLtd��|d dkr`td��dS )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
r; r znot enough image datar zcannot decode image dataN) r/ r rO rP rK r� rW rS r� )r3 rt �rawmoder| r^ r r r �
set_as_raw� s
zPyDecoder.set_as_raw)N)N)rg rh ri rj r� r r� �propertyrQ rS rU rR rP r� r r r r r� K s
#r� i ������r? i����i����)r )rx r- rD r � r Z_utilr r" r� rT r r r r r rl rs r� r� r� r� r r r r �<module> s2
a
B