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Some of this can actually be useful on non-Posix systems too, e.g. for manipulation of the pathname component of URLs. �.�..�/�:z /bin:/usr/binNz /dev/null� )�*�normcase�isabs�join� splitdrive�split�splitext�basename�dirname� commonprefix�getsize�getmtime�getatime�getctime�islink�exists�lexists�isdir�isfile�ismount� expanduser� expandvars�normpath�abspath�samefile� sameopenfile�samestat�curdir�pardir�sep�pathsep�defpath�altsep�extsep�devnull�realpath�supports_unicode_filenames�relpath� commonpathc C s t | t�rdS dS d S )N� /r )� isinstance�bytes��path� r2 �!/usr/lib64/python3.8/posixpath.py�_get_sep) s r4 c C s t �| �S )z6Normalize case of pathname. Has no effect under Posix��os�fspath)�sr2 r2 r3 r 4 s c C s t �| �} t| �}| �|�S )z Test whether a path is absolute)r6 r7 r4 � startswith)r8 r# r2 r2 r3 r < s c G s� t �| �} t| �}| }z^|s,|dd� | tt j|�D ]8}|�|�rL|}q8|rZ|�|�rd||7 }q8||| 7 }q8W n. tttfk r� t j d| f|�� � Y nX |S )z�Join two or more pathname components, inserting '/' as needed. If any component is an absolute path, all previous path components will be discarded. An empty last part will result in a path that ends with a separator.Nr r ) r6 r7 r4 �mapr9 �endswith� TypeError�AttributeError� BytesWarning� genericpath�_check_arg_types)�a�pr# r1 �br2 r2 r3 r G s c C s` t �| �} t| �}| �|�d }| d|� | |d� }}|rX||t|� krX|�|�}||fS )z�Split a pathname. Returns tuple "(head, tail)" where "tail" is everything after the final slash. Either part may be empty.� N�r6 r7 r4 �rfind�len�rstrip)rB r# �i�head�tailr2 r2 r3 r d s c C s6 t �| �} t| t�r d}d}nd}d}t�| |d |�S )Nr- � .r r )r6 r7 r. r/ r? � _splitext)rB r# r' r2 r2 r3 r u s c C s t �| �} | dd� | fS )zJSplit a pathname into drive and path. On Posix, drive is always empty.Nr r5 )rB r2 r2 r3 r � s c C s, t �| �} t| �}| �|�d }| |d� S )z)Returns the final component of a pathnamerD N)r6 r7 r4 rF )rB r# rI r2 r2 r3 r � s c C sN t �| �} t| �}| �|�d }| d|� }|rJ||t|� krJ|�|�}|S )z-Returns the directory component of a pathnamerD NrE )rB r# rI rJ r2 r2 r3 r � s c C s8 zt �| �}W n tttfk r* Y dS X t�|j�S )z&Test whether a path is a symbolic linkF)r6 �lstat�OSError� ValueErrorr= �stat�S_ISLNK�st_mode)r1 �str2 r2 r3 r � s c C s. zt �| � W n ttfk r( Y dS X dS )zCTest whether a path exists. Returns True for broken symbolic linksFT)r6 rN rO rP r0 r2 r2 r3 r � s c C s� zt �| �}W n ttfk r( Y dS X t�|j�r:dS t| t�rPt | d�}n t | d�}t |�}zt �|�}W n ttfk r� Y dS X |j }|j }||kr�dS |j }|j }||kr�dS dS )z$Test whether a path is a mount pointF� ..r T) r6 rN rO rP rQ rR rS r. r/ r r) �st_dev�st_ino)r1 �s1�parent�s2�dev1�dev2�ino1�ino2r2 r2 r3 r � s. c C s< t �| �} t| t�rd}nd}| �|�s,| S t| �}| �|d�}|dk rPt| �}|dkr�dt jkr�ddl }z|� t � � �j }W q� t k r� | Y S X n t jd }nVddl }| d|� }t|t�r�t|d�}z|�|�}W n t k r� | Y S X |j }t| t��rt �|�}d}nd }|�|�}|| |d� �p:|S ) zOExpand ~ and ~user constructions. If user or $HOME is unknown, do nothing.� ~�~rD r �HOMEN�ASCIIr- r )r6 r7 r. r/ r9 r4 �findrG �environ�pwd�getpwuid�getuid�pw_dir�KeyError�str�getpwnam�fsencoderH ) r1 �tilder# rI re �userhome�name�pwent�rootr2 r2 r3 r � sB c C sZ t �| �} t| t�rVd| kr | S ts:ddl}|�d|j�atj}d}d}t t dd�}n:d| krb| S t s|ddl}|�d |j�a t j}d }d }t j }d}|| |�}|s��qV|� d�\}}|� d �} | �|�r�| �|�r�| d d � } z.|dk�rt �t j t �| � �} n|| } W n tk �r& |}Y q�X | |d� } | d|� | } t| �}| | 7 } q�| S )zZExpand shell variables of form $var and ${var}. Unknown variables are left unchanged.� $r Ns \$(\w+|\{[^}]*\})� {� }�environb�$z\$(\w+|\{[^}]*\})�{�}rD ���)r6 r7 r. r/ � _varprogb�re�compilerb �search�getattr�_varprogrd �span�groupr9 r; rl �fsdecoderi rG ) r1 r{ r} �start�endrd rI �m�jro �valuerK r2 r2 r3 r sN c C s� t �| �} t| t�r&d}d}d}d}nd}d}d}d}| |krB|S | �|�}|rp| �|d �rp| �|d �spd }| �|�}g }|D ]J}|||fkr�q�||ks�|s�|r�|r�|d |kr�|�|� q�|r�|�� q�|}|�|�} |r�|| | } | p�|S ) z0Normalize path, eliminating double slashes, etc.r- � rL rU r � r r � � ry ) r6 r7 r. r/ r9 r �append�popr ) r1 r# �empty�dot�dotdot�initial_slashes�comps� new_comps�compr2 r2 r3 r N sJ � � � � c C s@ t �| �} t| �s8t| t�r&t �� }nt �� }t|| �} t| �S )zReturn an absolute path.) r6 r7 r r. r/ �getcwdb�getcwdr r )r1 �cwdr2 r2 r3 r t s c C s* t �| �} t| dd� | i �\}}t|�S )zlReturn the canonical path of the specified filename, eliminating any symbolic links encountered in the path.Nr )r6 r7 � _joinrealpathr )�filenamer1 �okr2 r2 r3 r) � s c C s t | t�rd}d}d}n d}d}d}t|�r<|dd � }|} |�r|�|�\}}}|r<||kr`q<||kr�| r�t| �\} }||kr�t| ||�} q<|} q<t| |�}t|�s�|} q<||kr�|| } | d k r�q<t||�dfS d ||< t| t� |�|�\} } | �st| |�dfS | ||< q<| d fS ) Nr- rL rU r r r rD FT) r. r/ r � partitionr r r r� r6 �readlink) r1 �rest�seenr# r! r" ro �_�newpathr� r2 r2 r3 r� � sH r� �darwinc C s� | s t d��t�| �} t| t�r.d}d}d}n d}d}d}|dkrH|}n t�|�}zrd d � t|��|�D �}d d � t| ��|�D �}tt||g��}|gt|�| ||d� }|s�|W S t |� W S t t t t fk r� t�d | |� � Y nX dS ) z#Return a relative version of a pathzno path specifiedrL r- rU r r r Nc S s g | ] }|r|�qS r2 r2 ��.0�xr2 r2 r3 � <listcomp>� s zrelpath.<locals>.<listcomp>c S s g | ] }|r|�qS r2 r2 r� r2 r2 r3 r� � s r+ )rP r6 r7 r. r/ r r rG r r r< r= r> �DeprecationWarningr? r@ ) r1 r� r! r# r" � start_list� path_listrI �rel_listr2 r2 r3 r+ � s0 c s2 | s t d��tttj| ��} t| d t�r4d�d� nd�d� zƇfdd�| D �}z t�fd d �| D ��\}W n t k r� t d �d �Y nX � fd d�|D �}t|�}t |�}|}t |�D ]$\}}||| kr�|d |� } q�q�|r�n �d d� }|�� |� W S t t fk �r, tjd| �� � Y nX d S )zDGiven a sequence of path names, returns the longest common sub-path.z%commonpath() arg is an empty sequencer r- rL r r c s g | ]}|� � ��qS r2 )r )r� r1 �r# r2 r3 r� � s z commonpath.<locals>.<listcomp>c 3 s | ]}|d d� � kV qd S )NrD r2 )r� rB r� r2 r3 � <genexpr>� s z commonpath.<locals>.<genexpr>z%Can't mix absolute and relative pathsNc s g | ]}� fd d�|D ��qS )c s g | ]}|r|� kr|�qS r2 r2 )r� �c�r! r2 r3 r� s z)commonpath.<locals>.<listcomp>.<listcomp>r2 )r� r8 r� r2 r3 r� s r, )r, )rP �tupler: r6 r7 r. r/ �set�min�max� enumerater r< r= r? r@ ) �paths� split_pathsr rX rZ �commonrI r� �prefixr2 )r! r# r3 r, � s6 )N)'�__doc__r! r" r' r# r$ r% r& r( r6 �sysrQ r? �__all__r4 r r r r r rM r r r r r r r r rz r r r r) r� �platformr* r+ r, r2 r2 r2 r3 �<module> s� � *25& 3 )
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