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� fd�Zy)ziAbstract I/O mode container.
Mode strings are used in in `~fs.base.FS.open` and
`~fs.base.FS.openbin`.
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a� An abstraction for I/O modes.
A mode object provides properties that can be used to interrogate the
`mode strings <https://docs.python.org/3/library/functions.html#open>`_
used when opening files.
Example:
>>> mode = Mode('rb')
>>> mode.reading
True
>>> mode.writing
False
>>> mode.binary
True
>>> mode.text
False
c �2 � || _ | j � y)z�Create a new `Mode` instance.
Arguments:
mode (str): A *mode* string, as used by `io.open`.
Raises:
ValueError: If the mode string is invalid.
N)�_mode�validate)�self�modes �)/usr/lib/python3/dist-packages/fs/mode.py�__init__z
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Mode({!r}))�formatr �r s r �__repr__z
Mode.__repr__; s � ��"�"�4�:�:�.�.r c � � | j S )N)r r s r �__str__z Mode.__str__? s � ��z�z�r c �B � t |t � sJ �|| j v S )z+Check if a mode contains a given character.)�
isinstancer r )r � characters r � __contains__zMode.__contains__C s# � � �)�T�*�*�*��D�J�J�&�&r c �r � t j r | j j dd� S | j S )z�Get a mode string for the current platform.
Currently, this just removes the 'x' on PY2 because PY2 doesn't
support exclusive mode.
�x�w)�six�PY2r �replacer s r � to_platformzMode.to_platformI s* � � 03�w�w�t�z�z�!�!�#�s�+�F�D�J�J�Fr c �X � | j � j dd� }d|v r|S |dz S )zvGet a *binary* mode string for the current platform.
This removes the 't' and adds a 'b' if needed.
�t� �b)r' r& )r r s r �to_platform_binzMode.to_platform_binS s4 � � � � �"�*�*�3��3���u� �u�5�%�#�+�5r zrwxtab+c �� � | j }|s t d� �|j |� st dj |� � �|d dvr t d� �d|v rd|v r t d� �y y )
zpValidate the mode string.
Raises:
ValueError: if the mode contains invalid chars.
�mode must not be empty�%mode '{}' contains invalid charactersr �rwxaz*mode must start with 'r', 'w', 'x', or 'a'r) r+ z)mode can't be binary ('b') and text ('t')N)r �
ValueError�
issupersetr )r � _valid_charsr s r r z
Mode.validate] sy � � �z�z��� � 5�6� 6��&�&�t�,� � D� K� K�D� Q�R� R� ��7�&� � � I�J� J� �$�;�3�$�;� � H�I� I� '�;r c �B � | j � d| v r t d� �y)z�Validate a mode for opening a binary file.
Raises:
ValueError: if the mode contains invalid chars.
r) zmode must be binaryN)r r1 r s r � validate_binzMode.validate_bino s% � �
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�� �$�;� � 2�3� 3� r c �" � d| v xs
d| v xs d| v S )z/`bool`: `True` if the mode would create a file.�ar# r" � r s r �createz Mode.create{ s � � �d�{�8�c�T�k�8�S�D�[�8r c � � d| v xs d| v S )z+`bool`: `True` if the mode permits reading.�r�+r8 r s r �readingz Mode.reading� � � � �d�{�)�c�T�k�)r c �. � d| v xs d| v xs
d| v xs d| v S )z+`bool`: `True` if the mode permits writing.r# r7 r< r" r8 r s r �writingz Mode.writing� s) � � �d�{�G�c�T�k�G�S�D�[�G�C�4�K�Gr c �
� d| v S )z-`bool`: `True` if the mode permits appending.r7 r8 r s r � appendingzMode.appending� � � � �d�{�r c �
� d| v S )z<`bool`: `True` if the mode permits both reading and writing.r< r8 r s r �updatingz
Mode.updating� rC r c � � d| v xs d| v S )z;`bool`: `True` if the mode would truncate an existing file.r# r" r8 r s r �truncatez
Mode.truncate� r> r c �
� d| v S )z6`bool`: `True` if the mode require exclusive creation.r" r8 r s r � exclusivezMode.exclusive� rC r c �
� d| v S )z*`bool`: `True` if a mode specifies binary.r+ r8 r s r �binaryz Mode.binary� rC r c � � d| v xs d| vS )z(`bool`: `True` if a mode specifies text.r) r+ r8 r s r �textz Mode.text� s � � �d�{�-�c��o�-r N)�__name__�
__module__� __qualname__�__doc__r r r r r' r, � frozensetr r5 �propertyr9 r= r@ rB rE rG rI rK rM r8 r r r
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c �, � t | � j S )z�Check a mode string allows reading.
Arguments:
mode (str): A mode string, e.g. ``"rt"``
Returns:
bool: `True` if the mode allows reading.
)r
r= �r s r r r � � � � ��:� � � r c �, � t | � j S )z�Check a mode string allows writing.
Arguments:
mode (str): A mode string, e.g. ``"wt"``
Returns:
bool: `True` if the mode allows writing.
)r
r@ rU s r r r � rV r c � � t | � y)z�Check ``mode`` parameter of `~fs.base.FS.open` is valid.
Arguments:
mode (str): Mode parameter.
Raises:
`ValueError` if mode is not valid.
N)r
rU s r �validate_open_moderY � s � � ��Jr zrwxab+c � � d| v r t d� �| s t d� �| d dvr t d� �|j | � st dj | � � �y) z�Check ``mode`` parameter of `~fs.base.FS.openbin` is valid.
Arguments:
mode (str): Mode parameter.
Raises:
`ValueError` if mode is not valid.
r) z text mode not valid in openbinr. r r0 z)mode must start with 'r', 'w', 'a' or 'x'r/ N)r1 r2 r )r r3 s r r
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