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a s�h� � @ s� d Z ddlZddlZddlZddlZddlZddlZddlZddlZddl Z ddl m Z ej ej B ejB Zefdd�Zejfdd�Zejefdd ��Zdd d �Zddd�Zdd� Zdd� Zdd� ZdS )z( File utilities. .. versionadded:: 1.8 � N)�excutilsc C sX zt �| |� W nB tyR } z*|jtjkr<t j�| �s>� n� W Y d}~n d}~0 0 dS )z�Create a directory (and any ancestor directories required) :param path: Directory to create :param mode: Directory creation permissions N)�os�makedirs�OSError�errno�EEXIST�path�isdir)r �mode�exc� r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/oslo_utils/fileutils.py� ensure_tree% s r c C sD z || � W n2 t y> } z|jtjkr*� W Y d}~n d}~0 0 dS )z�Delete a file, but ignore file not found error. :param path: File to delete :param remove: Optional function to remove passed path N)r r �ENOENT)r �remove�er r r �delete_if_exists5 s r c c sR z dV W nB t yL t�� � || � W d � n1 s>0 Y Y n0 dS )z�Protect code that wants to operate on PATH atomically. Any exception will cause PATH to be removed. :param path: File to work with :param remove: Optional function to remove passed path N)� Exceptionr Zsave_and_reraise_exception)r r r r r �remove_path_on_errorC s r � �tmpc C sL |r t |� tj|||d�\}}zt�|| � W t�|� n t�|� 0 |S )a� Create a temporary file containing data. Create a temporary file containing specified content, with a specified filename suffix and prefix. The tempfile will be created in a default location, or in the directory `path`, if it is not None. `path` and its parent directories will be created if they don't exist. :param content: bytestring to write to the file :param path: same as parameter 'dir' for mkstemp :param suffix: same as parameter 'suffix' for mkstemp :param prefix: same as parameter 'prefix' for mkstemp For example: it can be used in database tests for creating configuration files. .. versionadded:: 1.9 )�suffix�dir�prefix)r �tempfile�mkstempr �write�close)�contentr r r �fdr r r �write_to_tempfileS s r � �sha256c sj t �|�}t| d��>� t� �fdd�d�D ]}|�|� t�d� q*W d � n1 sX0 Y |�� S )a� Compute checksum of a file's contents. :param path: Path to the file :param read_chunksize: Maximum number of bytes to be read from the file at once. Default is 65536 bytes or 64KB :param algorithm: The hash algorithm name to use. For example, 'md5', 'sha256', 'sha512' and so on. Default is 'sha256'. Refer to hashlib.algorithms_available for available algorithms :return: Hex digest string of the checksum .. versionadded:: 3.31.0 �rbc s � � ��S )N)�readr ��f�read_chunksizer r �<lambda> � z'compute_file_checksum.<locals>.<lambda>r) r N)�hashlib�new�open�iter�update�time�sleep� hexdigest)r r' � algorithmZchecksum�chunkr r% r �compute_file_checksump s *r4 c C s� t | d��|}z|�| tj� W nB tyb } z*|jtjkrL|�dtj� n� W Y d}~n d}~0 0 |�� }|� � |fW d � S 1 s�0 Y dS )a Return num bytes from the end of the file and unread byte count. Returns a tuple containing some content from the file and the number of bytes that appear in the file before the point at which reading started. The content will be at most ``num`` bytes, taken from the end of the file. If the file is smaller than ``num`` bytes the entire content of the file is returned. :param path: The file path to read :param num: The number of bytes to return :returns: (data, unread_bytes) r# r N) r, �seekr �SEEK_END�IOErrorr �EINVAL�SEEK_SET�tellr$ )r �num�fpr Z unread_bytesr r r � last_bytes� s r= c C s\ t | d��}|�� }W d � n1 s(0 Y zt�|� W dS tyV Y dS 0 dS )z�Check if file is of json type or not. This function try to load the input file using json.loads() and return False if ValueError otherwise True. :param file_path: The file path to check :returns: bool �rNTF)r, r$ �json�loads� ValueError)� file_path�fh�datar r r �is_json� s & rE c C s� t | d��l}|�� }d}zt�|� W n< tyb zt�|� d}W n tjjy\ Y n0 Y n0 |W d � S 1 s|0 Y dS )ah Check if file is of yaml type or not. This function try to load the input file using yaml.safe_load() and return True if loadable. Because every json file can be loadable in yaml, so this function return False if file is loadable using json.loads() means it is json file. :param file_path: The file path to check :returns: bool r> FTN) r, r$ r? r@ rA �yamlZ safe_load�scannerZ ScannerError)rB rC rD �is_yamlr r r rH � s rH )Nr r )r! r" )�__doc__� contextlibr r* r? r �statr r/ rF Z oslo_utilsr �S_IRWXU�S_IRWXG�S_IRWXOZ _DEFAULT_MODEr �unlinkr �contextmanagerr r r4 r= rE rH r r r r �<module> s(
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