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   2  
   3  ��hO0�@sdZddlZddlZddlZddlZddlZddlZddlZddlm	Z	e�
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   8  Utilities for path handling.
   9  �N)�systemcCstj�|�ot�|tj�S)zBWhether `path` is a directory, to which the user has write access.)�os�path�isdir�access�W_OK�r�r	�Hc:\Users\shubh\Videos\agent\nova\Lib\site-packages\IPython/utils/path.py�
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  11  Cs|zddl}Wnty}ztd�|�d}~ww|jjj}|j|j|jg|_|�d�}|||d�}|dks9|dkr;|S|j	S)z�Get a long path name (expand ~) on Windows using ctypes.
  12  
  13          Examples
  14          --------
  15  
  16          >>> get_long_path_name('c:\\docume~1')
  17          'c:\\Documents and Settings'
  18  
  19          rNz2you need to have ctypes installed for this to worki)
  20  �ctypes�ImportError�windll�kernel32ZGetLongPathNameW�	c_wchar_p�c_uint�argtypes�create_unicode_buffer�value)rr
  21  �eZ_GetLongPathName�buf�rvr	r	r
  22  �_get_long_path_names
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  24  ��
  25  �
  26  rcC�|S)zDummy no-op.r	rr	r	r
  27  r6scCst|�S)z�Expand a path into its long form.
  28  
  29      On Windows this expands any ~ in the paths. On other platforms, it is
  30      a null operation.
  31      )rrr	r	r
  32  �get_long_path_name<srcCs.tj�d�}|�|�rd|t|�d�}|S)z*Reverse of :func:`os.path.expanduser`
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  38  r!cCsJtj�|�}tj�|�r|S|�d�s|d}tj�|�r|Std|��)z�Return a valid python filename in the current directory.
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  44  r&�filename�returncCs�|�d��d�}tj�|�rtj�|�r|S|durd}nt|t�r%|f}|D]!}|dkr1t��}ttj�	||��}tj�|�rHtj�
  45  |�Sq'td||f��)a�Find a file by looking through a sequence of paths.
  46  
  47      This iterates through a sequence of paths looking for a file and returns
  48      the full, absolute path of the first occurrence of the file.  If no set of
  49      path dirs is given, the filename is tested as is, after running through
  50      :func:`expandvars` and :func:`expanduser`.  Thus a simple call::
  51  
  52          filefind('myfile.txt')
  53  
  54      will find the file in the current working dir, but::
  55  
  56          filefind('~/myfile.txt')
  57  
  58      Will find the file in the users home directory.  This function does not
  59      automatically try any paths, such as the cwd or the user's home directory.
  60  
  61      Parameters
  62      ----------
  63      filename : str
  64          The filename to look for.
  65      path_dirs : str, None or sequence of str
  66          The sequence of paths to look for the file in.  If None, the filename
  67          need to be absolute or be in the cwd.  If a string, the string is
  68          put into a sequence and the searched.  If a sequence, walk through
  69          each element and join with ``filename``, calling :func:`expandvars`
  70          and :func:`expanduser` before testing for existence.
  71  
  72      Returns
  73      -------
  74      path : str
  75          returns absolute path to file.
  76  
  77      Raises
  78      ------
  79      IOError
  80      �"�'N)��.z5File %r does not exist in any of the search paths: %r)�striprr�isabsr"�
  81  isinstance�str�getcwd�expand_path�join�abspathr$)r'�	path_dirsrZtestnamer	r	r
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  85  r7�sr7FcCs�tj�d�}tj�|�}t|�s?tjdkr?z%ddl}|�|jd��}|�	|d�d}Wd�n1s4wYWnY|rEt|�rPt
  86  |t�sNJd��|Std|��)	aVReturn the 'home' directory, as a unicode string.
  87  
  88      Uses os.path.expanduser('~'), and checks for writability.
  89  
  90      See stdlib docs for how this is determined.
  91      For Python <3.8, $HOME is first priority on *ALL* platforms.
  92      For Python >=3.8 on Windows, %HOME% is no longer considered.
  93  
  94      Parameters
  95      ----------
  96      require_writable : bool [default: False]
  97          if True:
  98              guarantees the return value is a writable directory, otherwise
  99              raises HomeDirError
 100          if False:
 101              The path is resolved, but it is not guaranteed to exist or be writable.
 102      r�ntrNz@Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders�Personalz#Homedir should be unicode not byteszD%s is not a writable dir, set $HOME environment variable to override)
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 108  r�environr%�getrr3rDrr/r0��envZxdgr	r	r
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 116      :Examples:
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 118         In [2]: os.environ['FOO']='test'
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 120         In [3]: expand_path('variable FOO is $FOO')
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 131  
 132      Unmatched glob pattern will remain as-is in the returned list.
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 137  rdcCs`tjdtdd�ztj�|�}WntjyYdSw|D]}tj�|�}||kr-dSqdS)aIDetermine whether a target is out of date.
 138  
 139      target_outdated(target,deps) -> 1/0
 140  
 141      deps: list of filenames which MUST exist.
 142      target: single filename which may or may not exist.
 143  
 144      If target doesn't exist or is older than any file listed in deps, return
 145      true, otherwise return false.
 146  
 147      .. deprecated:: 8.22
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 152  
 153      target_update(target,deps,cmd) -> runs cmd if target is outdated.
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 155      This is just a wrapper around target_outdated() which calls the given
 156      command if target is outdated.
 157  
 158      .. deprecated:: 8.22
 159      zW`target_update` is deprecated since IPython 8.22 and will be removed in future versionsrerfN)rirjrkrqr)rnro�cmdr	r	r
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 162  �rsi�c
 163  CsRttd�stSd}z	t�||�W|Sty(}z
 164  |j}WYd}~|Sd}~ww)z�Hard links ``src`` to ``dst``, returning 0 or errno.
 165  
 166      Note that the special errno ``ENOLINK`` will be returned if ``os.link`` isn't
 167      supported by the operating system.
 168      �linkrN)�hasattrr�ENOLINKrt�OSError�errno)�src�dst�
 169  link_errnorr	r	r
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 173  |�W�tyOY�wt�||�dS|dkrdt�||�dSdS)a+Attempts to hardlink ``src`` to ``dst``, copying if the link fails.
 174  
 175      Attempts to maintain the semantics of ``shutil.copy``.
 176  
 177      Because ``os.link`` does not overwrite files, a unique temporary file
 178      will be used if the target already exists, then that file will be moved
 179      into place.
 180      Nz
 181  -temp-%04Xrhir)rrrr3�basenamertrx�EEXIST�stat�st_ino�random�randint�link_or_copy�removerw�rename�shutil�copy)ryrzr{Znew_dstr	r	r
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 186  Csrtj�|�s+z
 187  tj||d�WdSty*}z|jtjkr�WYd}~dSd}~wwtj�|�s7td|��dS)z�ensure that a directory exists
 188  
 189      If it doesn't exist, try to create it and protect against a race condition
 190      if another process is doing the same.
 191  
 192      The default permissions are 755, which differ from os.makedirs default of 777.
 193      )�modeNz %r exists but is not a directory)	rr�exists�makedirsrwrxr}rr$)rr�rr	r	r
 194  �ensure_dir_exists�s����r�rZ)F)r�)"�__doc__rr]rxr�r�r`riZIPython.utils.processr�getfilesystemencodingZfs_encodingrr^rrr!r&r0r6�	Exceptionr7rDrLrNr2rYrdrqrsrvrtr�r�r	r	r	r
 195  �<module>s>
 196  
 197  	;+	$