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� Z d8 d � Z d9 d � Z d: d � Z d; d � Z d< d � Z d a d a d= d � Z d> d � Z d? d � Z d@ d& � Z! dA dB � Z" e j# dC k Z$ d dD d( � Z% d S)Ea� Common operations on Posix pathnames.
Instead of importing this module directly, import os and refer to
this module as os.path. The "os.path" name is an alias for this
module on Posix systems; on other systems (e.g. Mac, Windows),
os.path provides the same operations in a manner specific to that
platform, and is an alias to another module (e.g. macpath, ntpath).
Some of this can actually be useful on non-Posix systems too, e.g.
for manipulation of the pathname component of URLs.
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isinstance�bytes)�path� r/ �./opt/alt/python34/lib64/python3.4/posixpath.py�_get_sep& s r1 c C s7 t | t t f � s3 t d j | j j � � � n | S)z6Normalize case of pathname. Has no effect under Posixz2normcase() argument must be str or bytes, not '{}')r, r- �str� TypeError�format� __class__�__name__)�sr/ r/ r0 r 1 s c C s t | � } | j | � S)z Test whether a path is absolute)r1 �
startswith)r7 r r/ r/ r0 r < s c G s� t | � } | } y^ xW | D]O } | j | � r: | } q | sP | j | � r] | | 7} q | | | 7} q WWnG t k
r� t d d � | f | D� � r� t d � d � n � Yn X| S)z�Join two or more pathname components, inserting '/' as needed.
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ends with a separator.c s s$ | ] } t | t t f � Vq d S)N)r, r2 r- )�.0r7 r/ r/ r0 � <genexpr>V s zjoin.<locals>.<genexpr>z.Can't mix strings and bytes in path componentsN)r1 r8 �endswithr3 �all)�a�pr r. �br/ r/ r0 r F s
c C sx t | � } | j | � d } | d | � | | d � } } | rn | | t | � k rn | j | � } n | | f S)z�Split a pathname. Returns tuple "(head, tail)" where "tail" is
everything after the final slash. Either part may be empty.� N)r1 �rfind�len�rstrip)r> r �i�head�tailr/ r/ r0 r c s ! c C s@ t | t � r d } d } n d } d } t j | | d | � S)Nr+ � .r) r( )r, r- � genericpath� _splitext)r> r r# r/ r/ r0 r s s c C s | d d � | f S)zJSplit a pathname into drive and path. On Posix, drive is always
empty.Nr r/ )r> r/ r/ r0 r � s c C s- t | � } | j | � d } | | d � S)z)Returns the final component of a pathnamer@ N)r1 rA )r> r rD r/ r/ r0 r � s c C sa t | � } | j | � d } | d | � } | r] | | t | � k r] | j | � } n | S)z-Returns the directory component of a pathnamer@ N)r1 rA rB rC )r> r rD rE r/ r/ r0 r
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r1 d SYn Xt j | j � S)z&Test whether a path is a symbolic linkF)�os�lstat�OSError�AttributeError�stat�S_ISLNK�st_mode)r. �str/ r/ r0 r � s
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r) d SYn Xd S)zCTest whether a path exists. Returns True for broken symbolic linksFT)rJ rK rL )r. r/ r/ r0 r � s
c C s� y t j | � } Wn t k
r+ d SYn Xt j | j � rB d St | t � rc t | d � } n t | d � } y t j | � } Wn t k
r� d SYn X| j } | j } | | k r� d S| j
} | j
} | | k r� d Sd S)z$Test whether a path is a mount pointFs ..z..T) rJ rK rL rN rO rP r, r- r �st_dev�st_ino)r. �s1�parent�s2�dev1�dev2�ino1�ino2r/ r/ r0 r � s,
c C s� t | t � r d } n d } | j | � s1 | St | � } | j | d � } | d k rj t | � } n | d k r� d t j k r� d d l } | j t j
� � j } q.t j d } nr d d l } | d | � } t | t � r� t | d � } n y | j
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r$| SYn X| j } t | t � rUt j | � } d } n d } | j | � } | | | d � p�| S)
zOExpand ~ and ~user constructions. If user or $HOME is unknown,
do nothing.� ~�~r@ r �HOMEN�ASCIIr+ r) )r, r- r8 r1 �findrB rJ �environ�pwd�getpwuid�getuid�pw_dirr2 �getpwnam�KeyError�fsencoderC ) r. �tilder rD ra �userhome�name�pwent�rootr/ r/ r0 r � s:
c C s� t | t � rs d | k r | St sI d d l } | j d | j � a n t j } d } d } t t d d � } nX d | k r� | St s� d d l } | j d | j � a n t j } d
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are left unchanged.� $r Ns \$(\w+|\{[^}]*\})� {� }�environb�$z\$(\w+|\{[^}]*\})�{�}r@ ���)r, r- � _varprogb�re�compiler^ �search�getattrrJ �_varprogr` �span�groupr8 r; rg �fsdecoderf rB ) r. rv rx �start�endr` rD �m�jrj �valuerF r/ r/ r0 r
sN "
c C s^ t | t � r* d } d } d } d } n d } d } d } d } | | k rR | S| j | � } | r� | j | d � r� | j | d
� r� d } n | j | � } g } xy | D]q } | | | f k r� q� n | | k s| r� | s| r| d | k r| j | � q� | r� | j � q� q� W| } | j | � } | rT| | | } n | p]| S)
z0Normalize path, eliminating double slashes, etc.r+ � rG s ..r) � r( z..� � r@ rt )r, r- r8 r �append�popr ) r. r �empty�dot�dotdot�initial_slashes�comps� new_comps�compr/ r/ r0 r > s< '
c C sR t | � sH t | t � r* t j � } n t j � } t | | � } n t | � S)zReturn an absolute path.)r r, r- rJ �getcwdb�getcwdr r )r. �cwdr/ r/ r0 r c s c C s, t | d d � | i � \ } } t | � S)zlReturn the canonical path of the specified filename, eliminating any
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C s� t | t � r$ d } d } d } n d } d } d } t | � r[ | d d � } | } n x?| r�| j | � \ } } } | s^ | | k r� q^ n | | k r� | r� t | � \ } } | | k r� t | | | � } q� q^ | } q^ n t | | � } t | � s| } q^ n | | k rK| | } | d k r8q^ n t | | � d f Sd | | <t | t j | � | � \ } } | s�t | | � d f S| | | <q^ W| d f S)
Nr+ rG s ..r) r( z..r@ FT)
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!r� �darwinc C s� | s t d � � n t | t � r9 d } d } d } n d } d } d } | d k r` | } n d d
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� t | � j | � D� } t t | | g � � } | g t | � | | | d � } | s� | St | � S) z#Return a relative version of a pathzno path specifiedrG r+ s ..r( r) z..Nc S s g | ] } | r | � q Sr/ r/ )r9 �xr/ r/ r0 �
<listcomp>� s zrelpath.<locals>.<listcomp>c S s g | ] } | r | � q Sr/ r/ )r9 r� r/ r/ r0 r� � s )�
ValueErrorr, r- r r rB r r ) r. r~ r r r �
start_list� path_listrD �rel_listr/ r/ r0 r' � s$ ""%)&�__doc__rJ �sysrN rH �__all__r r r# r r r! r" r$ r1 r r r r r rI r r r
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