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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..�/�: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� r0 �!/usr/lib64/python3.6/posixpath.py�_get_sep) s r2 c C s. t j| �} t| ttf�s*tdj| jj���| S )z6Normalize case of pathname. Has no effect under Posixz2normcase() argument must be str or bytes, not '{}') �os�fspathr- r. �str� TypeError�format� __class__�__name__)�sr0 r0 r1 r 4 s c C s t j| �} t| �}| j|�S )z Test whether a path is absolute)r3 r4 r2 � startswith)r: r" r0 r0 r1 r @ s c G s� t j| �} t| �}| }yd|s,|dd� | xJtt j|�D ]:}|j|�rN|}q:| s^|j|�rh||7 }q:||| 7 }q:W W 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 ) r3 r4 r2 �mapr; �endswithr6 �AttributeError� BytesWarning� genericpath�_check_arg_types)�a�pr" r/ �br0 r0 r1 r K s c C s` t j| �} t| �}| j|�d }| d|� | |d� }}|rX||t|� krX|j|�}||fS )z�Split a pathname. Returns tuple "(head, tail)" where "tail" is everything after the final slash. Either part may be empty.� N)r3 r4 r2 �rfind�len�rstrip)rC r" �i�head�tailr0 r0 r1 r h s c C s6 t j| �} t| t�r d}d}nd}d}tj| |d |�S )Nr, � .r r )r3 r4 r- r. r@ � _splitext)rC r" r& r0 r0 r1 r y s c C s t j| �} | dd� | fS )zJSplit a pathname into drive and path. On Posix, drive is always empty.Nr )r3 r4 )rC r0 r0 r1 r � s c C s, t j| �} t| �}| j|�d }| |d� S )z)Returns the final component of a pathnamerE N)r3 r4 r2 rF )rC r" rI r0 r0 r1 r � s c C sN t j| �} t| �}| j|�d }| d|� }|rJ||t|� krJ|j|�}|S )z-Returns the directory component of a pathnamerE N)r3 r4 r2 rF rG rH )rC r" rI rJ r0 r0 r1 r � s c C s4 yt j| �}W n ttfk r& dS X tj|j�S )z&Test whether a path is a symbolic linkF)r3 �lstat�OSErrorr> �stat�S_ISLNK�st_mode)r/ �str0 r0 r1 r � s c C s( yt j| � W n tk r" dS X dS )zCTest whether a path exists. Returns True for broken symbolic linksFT)r3 rN rO )r/ r0 r0 r1 r � s c C s� yt j| �}W n tk r" dS X tj|j�r4dS t| t�rJt| d�}n t| d�}t |�}yt j|�}W n tk r~ dS X |j }|j }||kr�dS |j }|j }||kr�dS dS )z$Test whether a path is a mount pointFs ..z..T) r3 rN rO rP rQ rR r- r. r r( �st_dev�st_ino)r/ �s1�parent�s2�dev1�dev2�ino1�ino2r0 r0 r1 r � s. c C s4 t j| �} t| t�rd}nd}| j|�s,| S t| �}| j|d�}|dk rPt| �}|dkr�dt jkr�ddl }y|j t j � �j }W q� t k r� | S X q�t jd }nRddl }| d|� }t|t�r�t|d�}y|j|�}W n t k r� | S X |j }t| t��rt j|�}d}nd }|j|�}|| |d� �p2|S ) zOExpand ~ and ~user constructions. If user or $HOME is unknown, do nothing.� ~�~rE r �HOMEN�ASCIIr, r )r3 r4 r- r. r; r2 �findrG �environ�pwd�getpwuid�getuid�pw_dir�KeyErrorr5 �getpwnam�fsencoderH ) r/ �tilder" rI rc �userhome�name�pwent�rootr0 r0 r1 r � sB c C s\ t j| �} t| t�rVd| kr | S ts:ddl}|jd|j�atj}d}d}t t dd�}n:d| krb| S t s|ddl}|jd |j�a t j}d }d }t j }d}x�|| |�}|s�P |j d�\}}|j d �} | j|�r�| j|�r�| d d � } y.|dk�rt jt j t j| � �} n|| } W n tk �r& |}Y q�X | |d� } | d|� | } t| �}| | 7 } q�W | S )zZExpand shell variables of form $var and ${var}. Unknown variables are left unchanged.� $r Ns \$(\w+|\{[^}]*\})� {� }�environb�$z\$(\w+|\{[^}]*\})�{�}rE ���)r3 r4 r- r. � _varprogb�re�compiler` �search�getattr�_varprogrb �span�groupr; r= ri �fsdecoderg rG ) r/ rx rz �start�endrb rI �m�jrl �valuerK r0 r0 r1 r sP c C s� t j| �} t| t�r&d}d}d}d}nd}d}d}d}| |krB|S | j|�}|rr| j|d �rr| j|d � rrd }| j|�}g }xV|D ]N}|||fkr�q�||ks�| r�| s�|r�|d |kr�|j|� q�|r�|j� q�W |}|j|�} |r�|| | } | p�|S ) z0Normalize path, eliminating double slashes, etc.r, � rL s ..r � r z..� � rE rv ) r3 r4 r- r. r; r �append�popr ) r/ r" �empty�dot�dotdot�initial_slashes�comps� new_comps�compr0 r0 r1 r R s> c C s@ t j| �} t| �s8t| t�r&t j� }nt j� }t|| �} t| �S )zReturn an absolute path.) r3 r4 r r- r. �getcwdb�getcwdr r )r/ �cwdr0 r0 r1 r x s c C s* t j| �} t| dd� | i �\}}t|�S )zlReturn the canonical path of the specified filename, eliminating any symbolic links encountered in the path.Nr )r3 r4 � _joinrealpathr )�filenamer/ �okr0 r0 r1 r( � s c C s t | t�rd}d}d}n d}d}d}t|�r<|dd � }|} x�|�r|j|�\}}}| s>||krdq>||kr�| r�t| �\} }||kr�t| ||�} q>|} q>t| |�}t|�s�|} q>||kr�|| } | d k r�q>t||�dfS d ||< t| tj |�|�\} } | �s t| |�dfS | ||< q>W | d fS ) Nr, rL s ..r r z..rE FT) r- r. r � partitionr r r r� r3 �readlink) r/ �rest�seenr" r r! rl �_�newpathr� r0 r0 r1 r� � sH r� �darwinc C s� | s t d��tj| �} t| t�r.d}d}d}n d}d}d}|dkrH|}n tj|�}ynd d � t|�j|�D �}d d � t| �j|�D �}tt||g��}|gt|�| ||d� }|s�|S t |� S t t t t fk r� tjd | |� � Y nX dS ) z#Return a relative version of a pathzno path specifiedrL r, s ..r r z..Nc S s g | ] }|r|�qS r0 r0 )�.0�xr0 r0 r1 � <listcomp>� s zrelpath.<locals>.<listcomp>c S s g | ] }|r|�qS r0 r0 )r� r� r0 r0 r1 r� � s r* )� ValueErrorr3 r4 r- r. r r rG r r r6 r> r? �DeprecationWarningr@ rA ) r/ r� r r" r! � start_list� path_listrI �rel_listr0 r0 r1 r* � s0 c s2 | s t d��tttj| ��} t| d t�r4d�d� nd�d� yƇfdd�| D �}y t�fd d �| D ��\}W n t k r� t d �d �Y nX � fd d�|D �}t|�}t |�}|}x.t |�D ]"\}}||| kr�|d |� }P q�W |r�n �d d� }|�j |� 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 | ]}|j � ��qS r0 )r )r� r/ )r" r0 r1 r� � s z commonpath.<locals>.<listcomp>c 3 s | ]}|d d� � kV qd S )NrE r0 )r� rC )r" r0 r1 � <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 r0 r0 )r� �c)r r0 r1 r� s z)commonpath.<locals>.<listcomp>.<listcomp>r0 )r� r: )r r0 r1 r� s r+ )r+ )r� �tupler< r3 r4 r- r. �set�min�max� enumerater r6 r> r@ rA ) �paths� split_pathsr rV rX �commonrI r� �prefixr0 )r r" r1 r+ � s6 )N)'�__doc__r r! r& r" r# r$ r% r' r3 �sysrP r@ �__all__r2 r r r r r rM r r r r r r r r| rw r r r r( r� �platformr) r* r+ r0 r0 r0 r1 �<module> sZ *25& 3 )
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