o
    2j                     @  s   U d dl mZ d dlZd dlZd dlmZ d dlmZ zd dlZ	W n e
y0   es.d dl	Z	Y nw erSd dlmZ d dlmZmZmZ ddlmZ eeef Zd	ed
< G dd dZdS )    )annotationsN)TYPE_CHECKING)atomic_write)Iterator)AnyLiteral	TypeAlias   )CachingFileSystemr   Detailc                   @  s   e Zd ZdZd0ddZd1d
dZd2ddZ	d3d4ddZd5ddZd6dd Z	d7d!d"Z
d8d%d&Zd9d(d)Zd7d*d+Zd:d-d.Zd/S );CacheMetadataa  Cache metadata.

    All reading and writing of cache metadata is performed by this class,
    accessing the cached files and blocks is not.

    Metadata is stored in a single file per storage directory in JSON format.
    For backward compatibility. No longer supports pickle.
    storage	list[str]c                 C  s   |st d|| _i g| _dS )z

        Parameters
        ----------
        storage: list[str]
            Directories containing cached files, must be at least one. Metadata
            is stored in the last of these directories by convention.
        z3CacheMetadata expects at least one storage locationN)
ValueError_storagecached_files)selfr    r   `/var/www/html/whisper/venv/lib/python3.10/site-packages/fsspec/implementations/cache_metadata.py__init__"   s   	zCacheMetadata.__init__fnstrreturnr   c                 C  sf   t |d}t|}W d   n1 sw   Y  | D ]}t|dtr0t|d |d< q|S )z6Low-level function to load metadata from specific filerNblocks)openjsonloadvalues
isinstancegetlistset)r   r   floadedcr   r   r   _load1   s   zCacheMetadata._loadmetadata_to_saveNonec                 C  s>   t |dd}t|| W d   dS 1 sw   Y  dS )z4Low-level function to save metadata to specific filew)modeN)r   r   dump)r   r'   r   r#   r   r   r   _save:   s   "zCacheMetadata._saveFwritable_onlyboolIterator[tuple[str, str, bool]]c                 c  sP    t | j}t| jD ]\}}||d k}|r|sqtj|d||fV  qdS )a  Yield locations (filenames) where metadata is stored, and whether
        writable or not.

        Parameters
        ----------
        writable: bool
            Set to True to only yield writable locations.

        Returns
        -------
        Yields (str, str, bool)
        r	   cacheN)lenr   	enumerateospathjoin)r   r-   nir   writabler   r   r   _scan_locations?   s   
zCacheMetadata._scan_locationsr4   cfsCachingFileSystem | None#Literal[False] | tuple[Detail, str]c                 C  s   t |  | jD ]H\\}}}}||vrq||  }|dur;|jr,|d |j|kr,q|jr;t |d  |jkr;qt	j
||d }t	j
|rP||f  S qdS )zIf path is in cache return its details, otherwise return ``False``.

        If the optional CachingFileSystem is specified then it is used to
        perform extra checks to reject possible matches, such as if they are
        too old.
        Nuidtimer   F)zipr9   r   copycheck_filesfsukeyexpiryr>   r3   r4   r5   exists)r   r4   r:   r   base_r0   detailr   r   r   
check_fileU   s   	zCacheMetadata.check_fileexpiry_timeinttuple[list[str], bool]c                 C  s   g }| j d   D ]4\}}t |d  |kr?|dd}|s(td| tj| j	d |}|
| | j d | q| j d rXtj| j	d d}| | j d | | j d  }||fS )zRemove expired metadata from the cache.

        Returns names of files corresponding to expired metadata and a boolean
        flag indicating whether the writable cache is empty. Caller is
        responsible for deleting the expired files.
        r>   r    z)Cache metadata does not contain 'fn' for r0   )r   r@   itemsr>   r    RuntimeErrorr3   r4   r5   r   appendpopr,   )r   rJ   expired_filesr4   rH   r   
cache_pathwritable_cache_emptyr   r   r   clear_expiredp   s"   

zCacheMetadata.clear_expiredc                 C  sP   g }|   D ]\}}}tj|r|| | q|i  q|p$i g| _dS )z>Load all metadata from disk and store in ``self.cached_files``N)r9   r3   r4   rE   rQ   r&   r   )r   r   r   rG   r   r   r   r      s   zCacheMetadata.loadr#   r   c                 C  sF   | j d | }|d durt|d |j |jkr!d|d< dS dS dS )zPerform side-effect actions on closing a cached file.

        The actual closing of the file is the responsibility of the caller.
        rM   r   TN)r   r1   	blocksizesize)r   r#   r4   r%   r   r   r   on_close_cached_file   s   $z"CacheMetadata.on_close_cached_file
str | Nonec                 C  sP   |  |d}|s
dS |\}}|| jd r$| jd | |   |S td)zRemove metadata of cached file.

        If path is in the cache, return the filename of the cached file,
        otherwise return ``None``.  Caller is responsible for deleting the
        cached file.
        NrM   z<Can only delete cached file in last, writable cache location)rI   
startswithr   r   rR   savePermissionError)r   r4   detailsrG   r   r   r   r   pop_file   s   zCacheMetadata.pop_filec           	      C  sH  t |  | jD ]\\}}}}|sqtj|ru| |}| D ]A\}}||v rb|d du s7|| d du r<d|d< n|| d }||d  ||d< t	|d || d |d< || d |d< q!| D ]\}}||vrs|||< qgn|}dd | D }|
 D ]}t|d trt|d |d< q| || || jd< qdS )	zSave metadata to diskr   Tr>   r=   c                 S  s   i | ]	\}}||  qS r   )r@   ).0kvr   r   r   
<dictcomp>   s    z&CacheMetadata.save.<locals>.<dictcomp>rM   N)r?   r9   r   r3   r4   rE   r&   rO   updatemaxr   r   r"   r!   r,   )	r   r   rG   r8   r0   r   ra   r%   r   r   r   r   r\      s:   

zCacheMetadata.saverH   c                 C  s   || j d |< dS )z8Update metadata for specific file in memory, do not saverM   N)r   )r   r4   rH   r   r   r   update_file   s   zCacheMetadata.update_fileN)r   r   )r   r   r   r   )r'   r   r   r   r   r(   )F)r-   r.   r   r/   )r4   r   r:   r;   r   r<   )rJ   rK   r   rL   )r   r(   )r#   r   r4   r   r   r(   )r4   r   r   rZ   )r4   r   rH   r   r   r(   )__name__
__module____qualname____doc__r   r&   r,   r9   rI   rV   r   rY   r_   r\   rf   r   r   r   r   r      s    
	

	






$r   )
__future__r   r3   r>   typingr   fsspec.utilsr   ujsonr   ImportErrorcollections.abcr   r   r   r   cachedr
   dictr   r   __annotations__r   r   r   r   r   <module>   s$    